remove Prot.pm, sort %valid fields
[spider.git] / perl / DXMsg.pm
index 9c032ba56f02caf41b682cd87731c6dcbd2c1c0b..153a2c1b1dc998379fd3e69ea999d7bd3f6a47d9 100644 (file)
 #
 # Copyright (c) 1998 Dirk Koopman G1TLH
 #
-# $Id$
-# 
+#
+#
+#
+# Notes for implementors:-
+#
+# PC28 field 11 is the RR required flag
+# PC28 field 12 is a VIA routing (ie it is a node call) 
+#
 
 package DXMsg;
 
-@ISA = qw(DXProt DXChannel);
-
 use DXUtil;
 use DXChannel;
 use DXUser;
 use DXM;
-use DXCluster;
 use DXProtVars;
 use DXProtout;
 use DXDebug;
-use FileHandle;
-use Carp;
+use DXLog;
+use IO::File;
+use Fcntl;
+
+eval {
+       require Net::SMTP;
+};
 
 use strict;
-use vars qw(%work @msg $msgdir %valid %busy);
 
-%work = ();                # outstanding jobs
-@msg = ();                 # messages we have
-%busy = ();                # station interlocks
-$msgdir = "$main::root/msg";              # directory contain the msgs
+use vars qw(%work @msg $msgdir %valid %busy $maxage $last_clean $residencetime
+                       @badmsg @swop $swopfn $badmsgfn $forwardfn @forward $timeout $waittime
+                       $email_server $email_prog $email_from
+                   $queueinterval $lastq $importfn $minchunk $maxchunk $bulltopriv);
+
+%work = ();                                            # outstanding jobs
+@msg = ();                                             # messages we have
+%busy = ();                                            # station interlocks
+$msgdir = "$main::root/msg";   # directory contain the msgs
+$maxage = 30 * 86400;                  # the maximum age that a message shall live for if not marked 
+$last_clean = 0;                               # last time we did a clean
+@forward = ();                  # msg forward table
+@badmsg = ();                                  # bad message table
+@swop = ();                                            # swop table
+$timeout = 30*60;               # forwarding timeout
+$waittime = 30*60;              # time an aborted outgoing message waits before trying again
+$queueinterval = 1*60;          # run the queue every 1 minute
+$lastq = 0;
+
+$minchunk = 4800;               # minimum chunk size for a split message
+$maxchunk = 6000;               # maximum chunk size
+$bulltopriv = 1;                               # convert msgs with callsigns to private if they are bulls
+$residencetime = 2*86400;       # keep deleted messages for this amount of time
+$email_server = undef;                 # DNS address of smtp server if 'smtp'
+$email_prog = undef;                   # program name + args for sending mail
+$email_from = undef;                   # the from address the email will appear to be from
+
+$badmsgfn = "$msgdir/badmsg.pl";    # list of TO address we wont store
+$forwardfn = "$msgdir/forward.pl";  # the forwarding table
+$swopfn = "$msgdir/swop.pl";        # the swopping table
+$importfn = "$msgdir/import";       # import directory
+
 
 %valid = (
-  fromnode => '9,From Node',
-  tonode => '9,To Node',
-  to => '0,To',
-  from => '0,From',
-  t => '0,Msg Time,cldatetime',
-  private => '9,Private',
-  subject => '0,Subject',
-  linesreq => '0,Lines per Gob',
-  rrreq => '9,Read Confirm',
-  origin => '0,Origin',
-  lines => '5,Data',
-  stream => '9,Stream No',
-  count => '9,Gob Linecnt',
-  file => '9,File?,yesno',
-  gotit => '9,Got it Nodes,parray',
-  lines => '9,Lines,parray',
-  read => '9,Times read',
-  size => '0,Size',
-  msgno => '0,Msgno',
-);
+                 'read' => '5,Times read',
+                 count => '5,Gob Linecnt',
+                 delete => '5,Awaiting Delete,yesno',
+                 deletetime => '5,Deletion Time,cldatetime',
+                 file => '5,File?,yesno',
+                 from => '0,From',
+                 fromnode => '5,From Node',
+                 gotit => '5,Got it Nodes,parray',
+                 keep => '0,Keep this?,yesno',
+                 lastt => '5,Last processed,cldatetime',
+                 lines => '5,Data',
+                 lines => '5,Lines,parray',
+                 linesreq => '0,Lines per Gob',
+                 msgno => '0,Msgno',
+                 origin => '0,Origin',
+                 private => '5,Private,yesno',
+                 rrreq => '5,Read Confirm,yesno',
+                 size => '0,Size',
+                 stream => '9,Stream No',
+                 subject => '0,Subject',
+                 t => '0,Msg Time,cldatetime',
+                 to => '0,To',
+                 tonode => '5,To Node',
+                 waitt => '5,Wait until,cldatetime',
+                );
+
+# fix up the default sendmail if available
+for (qw(/usr/sbin/sendmail /usr/lib/sendmail /usr/sbin/sendmail)) {
+       if (-e $_) {
+               $email_prog = $_;
+               last;
+       }
+}
 
 # allocate a new object
 # called fromnode, tonode, from, to, datetime, private?, subject, nolinesper  
 sub alloc                  
 {
-  my $pkg = shift;
-  my $self = bless {}, $pkg;
-  $self->{msgno} = shift;
-  $self->{to} = shift;
-  $self->{from} = shift;
-  $self->{t} = shift;
-  $self->{private} = shift;
-  $self->{subject} = shift;
-  $self->{origin} = shift;
-  $self->{read} = shift;
-  $self->{gotit} = [];
+       my $pkg = shift;
+       my $self = bless {}, $pkg;
+       $self->{msgno} = shift;
+       my $to = shift;
+       #  $to =~ s/-\d+$//o;
+       $self->{to} = ($to eq $main::mycall) ? $main::myalias : $to;
+       my $from = shift;
+       $self->{from} = uc $from;
+       $self->{t} = shift;
+       $self->{private} = shift;
+       $self->{subject} = shift;
+       $self->{origin} = shift;
+       $self->{'read'} = shift;
+       $self->{rrreq} = shift;
+       $self->{delete} = shift;
+       $self->{deletetime} = shift || ($self->{t} + $maxage);
+       $self->{keep} = shift;
+       $self->{gotit} = [];
+#      $self->{lastt} = $main::systime;
+       $self->{lines} = [];
+       $self->{private} = 1 if $bulltopriv && DXUser::get_current($self->{to});
     
-  return $self;
+       return $self;
 }
 
-sub workclean
+
+sub process
 {
-  my $ref = shift;
-  delete $ref->{lines};
-  delete $ref->{linesreq};
-  delete $ref->{tonode};
-  delete $ref->{fromnode};
-  delete $ref->{stream};
-  delete $ref->{lines};
-  delete $ref->{file};
-  delete $ref->{count};
+       # this is periodic processing
+       if ($main::systime >= $lastq + $queueinterval) {
+
+               # queue some message if the interval timer has gone off
+               queue_msg(0);
+               
+               # import any messages in the import directory
+               import_msgs();
+               
+               $lastq = $main::systime;
+       }
+
+       # clean the message queue
+       if ($main::systime >= $last_clean+3600) {
+               clean_old();
+               $last_clean = $main::systime;
+       }
+       
+       # actual remove all the 'deleted' messages in one hit.
+       # this has to be delayed until here otherwise it only does one at 
+       # a time because @msg is rewritten everytime del_msg is called.
+       my @del = grep {!$_->{tonode} && $_->{delete} && !$_->{keep} && $_->{deletetime} < $main::systime} @msg;
+       for (@del) {
+               $_->del_msg;
+       }
+       
 }
 
-sub process
+# incoming message
+sub handle_28
+{
+       my $dxchan = shift;
+       my ($tonode, $fromnode) = @_[1..2];
+
+       # sort out various extant protocol errors that occur
+       my $origin = $_[13];
+       $origin = $dxchan->call unless $origin && $origin gt ' ';
+
+       # first look for any messages in the busy queue 
+       # and cancel them this should both resolve timed out incoming messages
+       # and crossing of message between nodes, incoming messages have priority
+
+       my $ref = get_busy($fromnode);
+       if ($ref) {
+               my $otonode = $ref->{tonode} || "unknown";
+               dbg("Busy, stopping msgno: $ref->{msgno} $fromnode->$otonode") if isdbg('msg');
+               $ref->stop_msg($fromnode);
+       }
+
+       my $t = cltounix($_[5], $_[6]);
+       my $stream = next_transno($fromnode);
+       $ref = DXMsg->alloc($stream, uc $_[3], $_[4], $t, $_[7], $_[8], $origin, '0', $_[11]);
+                       
+       # fill in various forwarding state variables
+       $ref->{fromnode} = $fromnode;
+       $ref->{tonode} = $tonode;
+       $ref->{rrreq} = $_[11];
+       $ref->{linesreq} = $_[10];
+       $ref->{stream} = $stream;
+       $ref->{count} = 0;                      # no of lines between PC31s
+       dbg("new message from $_[4] to $_[3] '$_[8]' stream $fromnode/$stream\n") if isdbg('msg');
+       Log('msg', "Incoming message $_[4] to $_[3] '$_[8]' origin: $origin" );
+       set_fwq($fromnode, $stream, $ref); # store in work
+       set_busy($fromnode, $ref);      # set interlock
+       $dxchan->send(DXProt::pc30($fromnode, $tonode, $stream)); # send ack
+       $ref->{lastt} = $main::systime;
+
+       # look to see whether this is a non private message sent to a known callsign
+       my $uref = DXUser::get_current($ref->{to});
+       if (is_callsign($ref->{to}) && !$ref->{private} && $uref && $uref->homenode) {
+               $ref->{private} = 1;
+               dbg("set bull to $ref->{to} to private") if isdbg('msg');
+               Log('msg', "set bull to $ref->{to} to private");
+       }
+}
+               
+# incoming text
+sub handle_29
 {
-  my ($self, $line) = @_;
-  my @f = split /[\^\~]/, $line;
-  my ($pcno) = $f[0] =~ /^PC(\d\d)/;          # just get the number
-  
-  SWITCH: {
-    if ($pcno == 28) {                        # incoming message
-         my $t = cltounix($f[5], $f[6]);
-         my $stream = next_transno($f[2]);
-         my $ref = DXMsg->alloc($stream, $f[3], $f[4], $t, $f[7], $f[8], $f[13], '0', $f[11]);
-         
-         # fill in various forwarding state variables
-      $ref->{fromnode} = $f[2];
-      $ref->{tonode} = $f[1];
-         $ref->{rrreq} = $f[11];
-         $ref->{linesreq} = $f[10];
-         $ref->{stream} = $stream;
-         $ref->{count} = 0;                      # no of lines between PC31s
-         dbg('msg', "new message from $f[4] to $f[3] '$f[8]' stream $stream\n");
-      $work{"$f[2]$stream"} = $ref;         # store in work
-         $busy{$f[2]} = $ref;                          # set interlock
-         $self->send(DXProt::pc30($f[2], $f[1], $stream)); # send ack
-         last SWITCH;
-       }
-       
-    if ($pcno == 29) {                        # incoming text
-         my $ref = $work{"$f[2]$f[3]"};
-         if ($ref) {
-           push @{$ref->{lines}}, $f[4];
+       my $dxchan = shift;
+       my ($tonode, $fromnode, $stream) = @_[1..3];
+       
+       my $ref = get_fwq($fromnode, $stream);
+       if ($ref) {
+               $_[4] =~ s/\%5E/^/g;
+               if (@{$ref->{lines}}) {
+                       push @{$ref->{lines}}, $_[4];
+               } else {
+                       # temporarily store any R: lines so that we end up with 
+                       # only the first and last ones stored.
+                       if ($_[4] =~ m|^R:\d{6}/\d{4}|) {
+                               push @{$ref->{tempr}}, $_[4];
+                       } else {
+                               if (exists $ref->{tempr}) {
+                                       push @{$ref->{lines}}, shift @{$ref->{tempr}};
+                                       push @{$ref->{lines}}, pop @{$ref->{tempr}} if @{$ref->{tempr}};
+                                       delete $ref->{tempr};
+                               }
+                               push @{$ref->{lines}}, $_[4];
+                       } 
+               }
                $ref->{count}++;
                if ($ref->{count} >= $ref->{linesreq}) {
-                 $self->send(DXProt::pc31($f[2], $f[1], $f[3]));
-                 dbg('msg', "stream $f[3]: $ref->{linereq} lines received\n");
-                 $ref->{count} = 0;
+                       $dxchan->send(DXProt::pc31($fromnode, $tonode, $stream));
+                       dbg("stream $stream: $ref->{count} lines received\n") if isdbg('msg');
+                       $ref->{count} = 0;
                }
-         }
-         last SWITCH;
-       }
-       
-    if ($pcno == 30) {                        # this is a incoming subject ack
-         my $ref = $work{$f[2]};          # note no stream at this stage
-         delete $work{$f[2]};
-         $ref->{stream} = $f[3];
-         $ref->{count} = 0;
-         $ref->{linesreq} = 5;
-         $work{"$f[2]$f[3]"} = $ref;        # new ref
-         dbg('msg', "incoming subject ack stream $[3]\n");
-         $busy{$f[2]} = $ref;                       # interlock
-         $ref->{lines} = [];
-         push @{$ref->{lines}}, ($ref->read_msg_body);
-         $ref->send_tranche($self);
-         last SWITCH;
-       }
-       
-    if ($pcno == 31) {                        # acknowledge a tranche of lines
-         my $ref = $work{"$f[2]$f[3]"};
-         if ($ref) {
-           dbg('msg', "tranche ack stream $f[3]\n");
-           $ref->send_tranche($self);
-         } else {
-           $self->send(DXProt::pc42($f[2], $f[1], $f[3]));       # unknown stream
-         } 
-         last SWITCH;
-       }
-       
-    if ($pcno == 32) {                         # incoming EOM
-         dbg('msg', "stream $f[3]: EOM received\n");
-         my $ref = $work{"$f[2]$f[3]"};
-         if ($ref) {
-           $self->send(DXProt::pc33($f[2], $f[1], $f[3]));# acknowledge it
+               $ref->{lastt} = $main::systime;
+       } else {
+               dbg("PC29 from unknown stream $stream from $fromnode") if isdbg('msg');
+               $dxchan->send(DXProt::pc42($fromnode, $tonode, $stream));       # unknown stream
+       }
+}
+               
+# this is a incoming subject ack
+sub handle_30
+{
+       my $dxchan = shift;
+       my ($tonode, $fromnode, $stream) = @_[1..3];
+
+       my $ref = get_fwq($fromnode); # note no stream at this stage
+       if ($ref) {
+               del_fwq($fromnode);
+               $ref->{stream} = $stream;
+               $ref->{count} = 0;
+               $ref->{linesreq} = 5;
+               set_fwq($fromnode, $stream, $ref); # new ref
+               set_busy($fromnode, $ref); # interlock
+               dbg("incoming subject ack stream $stream\n") if isdbg('msg');
+               $ref->{lines} = [ $ref->read_msg_body ];
+               $ref->send_tranche($dxchan);
+               $ref->{lastt} = $main::systime;
+       } else {
+               dbg("PC30 from unknown stream $stream from $fromnode") if isdbg('msg');
+               $dxchan->send(DXProt::pc42($fromnode, $tonode, $stream));       # unknown stream
+       } 
+}
                
+# acknowledge a tranche of lines
+sub handle_31
+{
+       my $dxchan = shift;
+       my ($tonode, $fromnode, $stream) = @_[1..3];
+
+       my $ref = get_fwq($fromnode, $stream);
+       if ($ref) {
+               dbg("tranche ack stream $stream\n") if isdbg('msg');
+               $ref->send_tranche($dxchan);
+               $ref->{lastt} = $main::systime;
+       } else {
+               dbg("PC31 from unknown stream $stream from $fromnode") if isdbg('msg');
+               $dxchan->send(DXProt::pc42($fromnode, $tonode, $stream));       # unknown stream
+       } 
+}
+               
+# incoming EOM
+sub handle_32
+{
+       my $dxchan = shift;
+       my ($tonode, $fromnode, $stream) = @_[1..3];
+
+       dbg("stream $stream: EOM received\n") if isdbg('msg');
+       my $ref = get_fwq($fromnode, $stream);
+       if ($ref) {
+               $dxchan->send(DXProt::pc33($fromnode, $tonode, $stream));       # acknowledge it
+                               
                # get the next msg no - note that this has NOTHING to do with the stream number in PC protocol
                # store the file or message
                # remove extraneous rubbish from the hash
                # remove it from the work in progress vector
                # stuff it on the msg queue
-               if ($ref->{lines} && @{$ref->{lines}} > 0) {            # ignore messages with 0 lines
-                 $ref->{msgno} = next_transno("Msgno") if !$ref->{file};
-             push @{$ref->{gotit}}, $f[2];           # mark this up as being received
-                 $ref->store($ref->{lines});
-                 add_dir($ref);
+               if ($ref->{lines}) {
+                       if ($ref->{file}) {
+                               $ref->store($ref->{lines});
+                       } else {
+
+                               # is it too old
+                               if ($ref->{t}+$maxage < $main::systime ) {
+                                       $ref->stop_msg($fromnode);
+                                       dbg("old message from $ref->{from} -> $ref->{to} " . atime($ref->{t}) . " ignored") if isdbg('msg');
+                                       Log('msg', "old message from $ref->{from} -> $ref->{to} " . cldatetime($ref->{t}) . " ignored");
+                                       return;
+                               }
+
+                               # does an identical message already exist?
+                               my $m;
+                               for $m (@msg) {
+                                       if (substr($ref->{subject},0,28) eq substr($m->{subject},0,28) && $ref->{t} == $m->{t} && $ref->{from} eq $m->{from} && $ref->{to} eq $m->{to}) {
+                                               $ref->stop_msg($fromnode);
+                                               my $msgno = $m->{msgno};
+                                               dbg("duplicate message from $ref->{from} -> $ref->{to} to msg: $msgno") if isdbg('msg');
+                                               Log('msg', "duplicate message from $ref->{from} -> $ref->{to} to msg: $msgno");
+                                               return;
+                                       }
+                               }
+
+                               # swop addresses
+                               $ref->swop_it($dxchan->call);
+                                               
+                               # look for 'bad' to addresses 
+                               if ($ref->dump_it($dxchan->call)) {
+                                       $ref->stop_msg($fromnode);
+                                       dbg("'Bad' message $ref->{to}") if isdbg('msg');
+                                       Log('msg', "'Bad' message $ref->{to}");
+                                       return;
+                               }
+
+                               # check the message for bad words 
+                               my @bad;
+                               my @words;
+                               @bad = BadWords::check($ref->{subject});
+                               push @words, [$ref->{subject}, @bad] if @bad; 
+                               for (@{$ref->{lines}}) {
+                                       @bad = BadWords::check($_);
+                                       push @words, [$_, @bad] if @bad;
+                               }
+                               if (@words) {
+                                       LogDbg('msg',"$ref->{from} swore: $ref->{to} origin: $ref->{origin} via " . $dxchan->call);
+                                       LogDbg('msg',"subject: $ref->{subject}");
+                                       for (@words) {
+                                               my $r = $_;
+                                               my $line = shift @$r;
+                                               LogDbg('msg', "line: $line (using words: ". join(',', @$r).")");
+                                       }
+                                       $ref->stop_msg($fromnode);
+                                       return;
+                               }
+                                                       
+                               $ref->{msgno} = next_transno("Msgno");
+                               push @{$ref->{gotit}}, $fromnode; # mark this up as being received
+                               $ref->store($ref->{lines});
+                               $ref->notify;
+                               add_dir($ref);
+                               Log('msg', "Message $ref->{msgno} from $ref->{from} received from $fromnode for $ref->{to}");
+                       }
                }
-               $ref->stop_msg($self);
-               queue_msg();
-         } else {
-           $self->send(DXProt::pc42($f[2], $f[1], $f[3]));       # unknown stream
-         }
-         queue_msg();
-         last SWITCH;
-       }
-       
-    if ($pcno == 33) {                         # acknowledge the end of message
-         my $ref = $work{"$f[2]$f[3]"};
-         if ($ref) {
-               if ($ref->{private}) {                   # remove it if it private and gone off site#
-             $ref->del_msg;
-           } else {
-             push @{$ref->{gotit}}, $f[2];           # mark this up as being received
-                 $ref->store($ref->{lines});             # re- store the file
-           }
-       $ref->stop_msg($self);
-         } else {
-           $self->send(DXProt::pc42($f[2], $f[1], $f[3]));       # unknown stream
-         } 
-         queue_msg();
-         last SWITCH;
-       }
-       
-       if ($pcno == 40) {                         # this is a file request
-         $f[3] =~ s/\\/\//og;                     # change the slashes
-         $f[3] =~ s/\.//og;                       # remove dots
-         $f[3] = lc $f[3];                        # to lower case;
-         dbg('msg', "incoming file $f[3]\n");
-         last SWITCH if $f[3] =~ /^\/(perl|cmd|local_cmd|src|lib|include|sys|msg)\//;    # prevent access to executables
-         
-         # create any directories
-         my @part = split /\//, $f[3];
-         my $part;
-         my $fn = "$main::root";
-         pop @part;         # remove last part
-         foreach $part (@part) {
-           $fn .= "/$part";
+               $ref->stop_msg($fromnode);
+       } else {
+               dbg("PC32 from unknown stream $stream from $fromnode") if isdbg('msg');
+               $dxchan->send(DXProt::pc42($fromnode, $tonode, $stream));       # unknown stream
+       }
+       # queue_msg(0);
+}
+               
+# acknowledge the end of message
+sub handle_33
+{
+       my $dxchan = shift;
+       my ($tonode, $fromnode, $stream) = @_[1..3];
+       
+       my $ref = get_fwq($fromnode, $stream);
+       if ($ref) {
+               if ($ref->{private}) {  # remove it if it private and gone off site#
+                       Log('msg', "Message $ref->{msgno} from $ref->{from} sent to $fromnode and deleted");
+                       $ref->mark_delete;
+               } else {
+                       Log('msg', "Message $ref->{msgno} from $ref->{from} sent to $fromnode");
+                       push @{$ref->{gotit}}, $fromnode; # mark this up as being received
+                       $ref->store($ref->{lines});     # re- store the file
+               }
+               $ref->stop_msg($fromnode);
+       } else {
+               dbg("PC33 from unknown stream $stream from $fromnode") if isdbg('msg');
+               $dxchan->send(DXProt::pc42($fromnode, $tonode, $stream));       # unknown stream
+       } 
+
+       # send next one if present
+       queue_msg(0);
+}
+               
+# this is a file request
+sub handle_40
+{
+       my $dxchan = shift;
+       my ($tonode, $fromnode) = @_[1..2];
+       
+       $_[3] =~ s/\\/\//og;            # change the slashes
+       $_[3] =~ s/\.//og;                      # remove dots
+       $_[3] =~ s/^\///o;                      # remove the leading /
+       $_[3] = lc $_[3];                       # to lower case;
+       dbg("incoming file $_[3]\n") if isdbg('msg');
+       $_[3] = 'packclus/' . $_[3] unless $_[3] =~ /^packclus\//o;
+                       
+       # create any directories
+       my @part = split /\//, $_[3];
+       my $part;
+       my $fn = "$main::root";
+       pop @part;                                      # remove last part
+       foreach $part (@part) {
+               $fn .= "/$part";
                next if -e $fn;
-           last SWITCH if !mkdir $fn, 0777;
-        dbg('msg', "created directory $fn\n");
-         }
-         my $stream = next_transno($f[2]);
-         my $ref = DXMsg->alloc($stream, "$main::root/$f[3]", $self->call, time, !$f[4], $f[3], ' ', '0', '0');
-         
-         # forwarding variables
-      $ref->{fromnode} = $f[1];
-      $ref->{tonode} = $f[2];
-         $ref->{linesreq} = $f[5];
-         $ref->{stream} = $stream;
-         $ref->{count} = 0;                      # no of lines between PC31s
-         $ref->{file} = 1;
-      $work{"$f[2]$stream"} = $ref;         # store in work
-         $self->send(DXProt::pc30($f[2], $f[1], $stream));  # send ack 
-         
-         last SWITCH;
-       }
-       
-       if ($pcno == 42) {                        # abort transfer
-         dbg('msg', "stream $f[3]: abort received\n");
-         my $ref = $work{"$f[2]$f[3]"};
-         if ($ref) {
-           $ref->stop_msg($self);
+               last SWITCH if !mkdir $fn, 0777;
+               dbg("created directory $fn\n") if isdbg('msg');
+       }
+       my $stream = next_transno($fromnode);
+       my $ref = DXMsg->alloc($stream, "$main::root/$_[3]", $dxchan->call, time, !$_[4], $_[3], ' ', '0', '0');
+                       
+       # forwarding variables
+       $ref->{fromnode} = $tonode;
+       $ref->{tonode} = $fromnode;
+       $ref->{linesreq} = $_[5];
+       $ref->{stream} = $stream;
+       $ref->{count} = 0;                      # no of lines between PC31s
+       $ref->{file} = 1;
+       $ref->{lastt} = $main::systime;
+       set_fwq($fromnode, $stream, $ref); # store in work
+       $dxchan->send(DXProt::pc30($fromnode, $tonode, $stream)); # send ack 
+}
+               
+# abort transfer
+sub handle_42
+{
+       my $dxchan = shift;
+       my ($tonode, $fromnode, $stream) = @_[1..3];
+       
+       dbg("stream $stream: abort received\n") if isdbg('msg');
+       my $ref = get_fwq($fromnode, $stream);
+       if ($ref) {
+               $ref->stop_msg($fromnode);
                $ref = undef;
-         }
-         
-         last SWITCH;
        }
-  }
+}
+
+# global delete on subject
+sub handle_49
+{
+       my $dxchan = shift;
+       my $line = shift;
+       
+       for (@msg) {
+               if ($_->{from} eq $_[1] && $_->{subject} eq $_[2]) {
+                       $_->mark_delete;
+                       Log('msg', "Message $_->{msgno} from $_->{from} ($_->{subject}) fully deleted");
+                       DXChannel::broadcast_nodes($line, $dxchan);
+               }
+       }
 }
 
 
+
+sub notify
+{
+       my $ref = shift;
+       my $to = $ref->{to};
+       my $uref = DXUser::get_current($to);
+       my $dxchan = DXChannel::get($to);
+       if (((*Net::SMTP && $email_server) || $email_prog) && $uref && $uref->wantemail) {
+               my $email = $uref->email;
+               if ($email) {
+                       my @rcpt = ref $email ? @{$email} : $email;
+                       my $fromaddr = $email_from || $main::myemail;
+                       my @headers = ("To: $ref->{to}", 
+                                                  "From: $fromaddr",
+                                                  "Subject: [DXSpider: $ref->{from}] $ref->{subject}", 
+                                                  "X-DXSpider-To: $ref->{to}",
+                                                  "X-DXSpider-From: $ref->{from}\@$ref->{origin}", 
+                                                  "X-DXSpider-Gateway: $main::mycall"
+                                                 );
+                       my @data = ("Msgno: $ref->{msgno} To: $to From: $ref->{from}\@$ref->{origin} Gateway: $main::mycall", 
+                                               "", 
+                                               $ref->read_msg_body
+                                          );
+                       my $msg;
+                       undef $!;
+                       if (*Net::SMTP && $email_server) {
+                               $msg = Net::SMTP->new($email_server);
+                               if ($msg) {
+                                       $msg->mail($fromaddr);
+                                       $msg->to(@rcpt);
+                                       $msg->data(map {"$_\n"} @headers, '', @data);
+                                       $msg->quit;
+                               }
+                       } elsif ($email_prog) {
+                               $msg = new IO::File "|$email_prog " . join(' ', @rcpt);
+                               if ($msg) {
+                                       print $msg map {"$_\r\n"} @headers, '', @data, '.';
+                                       $msg->close;
+                               }
+                       }
+                       dbg("email forwarding error $!") if isdbg('msg') && !$msg && defined $!; 
+               }
+       }
+       $dxchan->send($dxchan->msg('m9')) if $dxchan && $dxchan->is_user;
+}
+
 # store a message away on disc or whatever
 #
 # NOTE the second arg is a REFERENCE not a list
 sub store
 {
-  my $ref = shift;
-  my $lines = shift;
-  
-  # we only proceed if there are actually any lines in the file
-  if (!$lines || @{$lines} == 0) {
-       return;
-  }
-  
-  if ($ref->{file}) {   # a file
-    dbg('msg', "To be stored in $ref->{to}\n");
-  
-    my $fh = new FileHandle "$ref->{to}", "w";
-       if (defined $fh) {
-         my $line;
-         foreach $line (@{$lines}) {
-               print $fh "$line\n";
-         }
-         $fh->close;
-         dbg('msg', "file $ref->{to} stored\n");
-    } else {
-      confess "can't open file $ref->{to} $!";  
-    }
-#      push @{$ref->{gotit}}, $ref->{fromnode} if $ref->{fromnode};
-  } else {              # a normal message
+       my $ref = shift;
+       my $lines = shift;
 
-    # attempt to open the message file
-       my $fn = filename($ref->{msgno});
+       if ($ref->{file}) {                     # a file
+               dbg("To be stored in $ref->{to}\n") if isdbg('msg');
+               
+               my $fh = new IO::File "$ref->{to}", "w";
+               if (defined $fh) {
+                       my $line;
+                       foreach $line (@{$lines}) {
+                               print $fh "$line\n";
+                       }
+                       $fh->close;
+                       dbg("file $ref->{to} stored\n") if isdbg('msg');
+                       Log('msg', "file $ref->{to} from $ref->{from} stored" );
+               } else {
+                       confess "can't open file $ref->{to} $!";  
+               }
+       } else {                                        # a normal message
+
+               # attempt to open the message file
+               my $fn = filename($ref->{msgno});
+               
+               dbg("To be stored in $fn\n") if isdbg('msg');
+               
+               # now save the file, overwriting what's there, YES I KNOW OK! (I will change it if it's a problem)
+               my $fh = new IO::File "$fn", "w";
+               if (defined $fh) {
+                       my $rr = $ref->{rrreq} ? '1' : '0';
+                       my $priv = $ref->{private} ? '1': '0';
+                       my $del = $ref->{delete} ? '1' : '0';
+                       my $delt = $ref->{deletetime} || ($ref->{t} + $maxage);
+                       my $keep = $ref->{keep} || '0';
+                       print $fh "=== $ref->{msgno}^$ref->{to}^$ref->{from}^$ref->{t}^$priv^$ref->{subject}^$ref->{origin}^$ref->{'read'}^$rr^$del^$delt^$keep\n";
+                       print $fh "=== ", join('^', @{$ref->{gotit}}), "\n";
+                       my $line;
+                       $ref->{size} = 0;
+                       foreach $line (@{$lines}) {
+                               $line =~ s/[\x00-\x08\x0a-\x1f\x80-\x9f]/./g;
+                               $ref->{size} += (length $line) + 1;
+                               print $fh "$line\n";
+                       }
+                       $fh->close;
+                       dbg("msg $ref->{msgno} stored\n") if isdbg('msg');
+                       Log('msg', "msg $ref->{msgno} from $ref->{from} to $ref->{to} stored" );
+               } else {
+                       confess "can't open msg file $fn $!";  
+               }
+       }
 
-    dbg('msg', "To be stored in $fn\n");
-    
-       # now save the file, overwriting what's there, YES I KNOW OK! (I will change it if it's a problem)
-    my $fh = new FileHandle "$fn", "w";
-       if (defined $fh) {
-         my $rr = $ref->{rrreq} ? '1' : '0';
-         my $priv = $ref->{private} ? '1': '0';
-      print $fh "=== $ref->{msgno}^$ref->{to}^$ref->{from}^$ref->{t}^$priv^$ref->{subject}^$ref->{origin}^$ref->{read}^$rr\n";
-         print $fh "=== ", join('^', @{$ref->{gotit}}), "\n";
-         my $line;
-         $ref->{size} = 0;
-         foreach $line (@{$lines}) {
-        $ref->{size} += (length $line) + 1;
-               print $fh "$line\n";
-         }
-         $fh->close;
-         dbg('msg', "msg $ref->{msgno} stored\n");
-    } else {
-      confess "can't open msg file $fn $!";  
-    }
-  }
 }
 
 # delete a message
 sub del_msg
 {
-  my $self = shift;
+       my $self = shift;
+       my $dxchan = shift;
+       my $call = '';
+       $call = ' by ' . $dxchan->call if $dxchan;
+       
+       if ($self->{tonode}) {
+               $self->{delete}++;
+               $self->{deletetime} = 0;
+               dbg("Msgno $self->{msgno} but marked as expunged$call") if isdbg('msg');
+       } else {
+               # remove it from the active message list
+               @msg = grep { $_ != $self } @msg;
+
+               Log('msg', "Msgno $self->{msgno} expunged$call");
+               dbg("Msgno $self->{msgno} expunged$call") if isdbg('msg');
+               
+               # remove the file
+               unlink filename($self->{msgno});
+       }
+}
+
+sub mark_delete
+{
+       my $ref = shift;
+       my $t = shift;
+
+       return if $ref->{keep};
+       
+       $t = $main::systime + $residencetime unless defined $t;
+       
+       $ref->{delete}++;
+       $ref->{deletetime} = $t;
+       $ref->store( [$ref->read_msg_body] );
+}
+
+sub unmark_delete
+{
+       my $ref = shift;
+       my $t = shift;
+       $ref->{delete} = 0;
+       $ref->{deletetime} = 0;
+}
 
-  # remove it from the active message list
-  @msg = map { $_ != $self ? $_ : () } @msg;
-  
-  # belt and braces (one day I will ask someone if this is REALLY necessary)
-  delete $self->{gotit};
-  delete $self->{list};
-  
-  # remove the file
-  unlink filename($self->{msgno});
-  dbg('msg', "deleting $self->{msgno}\n");
+# clean out old messages from the message queue
+sub clean_old
+{
+       my $ref;
+       
+       # mark old messages for deletion
+       foreach $ref (@msg) {
+               if (ref($ref) && !$ref->{keep} && $ref->{deletetime} < $main::systime) {
+
+                       # this is for IMMEDIATE destruction
+                       $ref->{delete}++;
+                       $ref->{deletetime} = 0;
+               }
+       }
 }
 
 # read in a message header
 sub read_msg_header
 { 
-  my $fn = shift;
-  my $file;
-  my $line;
-  my $ref;
-  my @f;
-  my $size;
-
-  $file = new FileHandle;
-  if (!open($file, $fn)) {
-    print "Error reading $fn $!\n";
-    return undef;
-  }
-  $size = -s $fn;
-  $line = <$file>;       # first line
-  chomp $line;
-  $size -= length $line;
-  if (! $line =~ /^===/o) {
-    print "corrupt first line in $fn ($line)\n";
-    return undef;
-  }
-  $line =~ s/^=== //o;
-  @f = split /\^/, $line;
-  $ref = DXMsg->alloc(@f);
-  
-  $line = <$file>;       # second line
-  chomp $line;
-  $size -= length $line;
-  if (! $line =~ /^===/o) {
-    print "corrupt second line in $fn ($line)\n";
-    return undef;
-  }
-  $line =~ s/^=== //o;
-  $ref->{gotit} = [];
-  @f = split /\^/, $line;
-  push @{$ref->{gotit}}, @f;
-  $ref->{size} = $size;
-  close($file);
-  
-  return $ref;
+       my $fn = shift;
+       my $file;
+       my $line;
+       my $ref;
+       my @f;
+       my $size;
+       
+       $file = new IO::File "$fn";
+       if (!$file) {
+           dbg("Error reading $fn $!");
+           Log('err', "Error reading $fn $!");
+               return undef;
+       }
+       $size = -s $fn;
+       $line = <$file>;                        # first line
+       if ($size == 0 || !$line) {
+           dbg("Empty $fn $!");
+           Log('err', "Empty $fn $!");
+               return undef;
+       }
+       chomp $line;
+       $size -= length $line;
+       if (! $line =~ /^===/o) {
+               dbg("corrupt first line in $fn ($line)");
+               Log('err', "corrupt first line in $fn ($line)");
+               return undef;
+       }
+       $line =~ s/^=== //o;
+       @f = split /\^/, $line;
+       $ref = DXMsg->alloc(@f);
+       
+       $line = <$file>;                        # second line
+       chomp $line;
+       $size -= length $line;
+       if (! $line =~ /^===/o) {
+           dbg("corrupt second line in $fn ($line)");
+           Log('err', "corrupt second line in $fn ($line)");
+               return undef;
+       }
+       $line =~ s/^=== //o;
+       $ref->{gotit} = [];
+       @f = split /\^/, $line;
+       push @{$ref->{gotit}}, @f;
+       $ref->{size} = $size;
+       
+       close($file);
+       
+       return $ref;
 }
 
 # read in a message header
 sub read_msg_body
 {
-  my $self = shift;
-  my $msgno = $self->{msgno};
-  my $file;
-  my $line;
-  my $fn = filename($msgno);
-  my @out;
-
-  $file = new FileHandle;
-  if (!open($file, $fn)) {
-    print "Error reading $fn $!\n";
-    return undef;
-  }
-  chomp (@out = <$file>);
-  close($file);
-  
-  shift @out if $out[0] =~ /^=== /;
-  shift @out if $out[0] =~ /^=== /;
-  return @out;
+       my $self = shift;
+       my $msgno = $self->{msgno};
+       my $file;
+       my $line;
+       my $fn = filename($msgno);
+       my @out;
+       
+       $file = new IO::File;
+       if (!open($file, $fn)) {
+               dbg("Error reading $fn $!");
+               Log('err' ,"Error reading $fn $!");
+               return ();
+       }
+       @out = map {chomp; $_} <$file>;
+       close($file);
+       
+       shift @out if $out[0] =~ /^=== /;
+       shift @out if $out[0] =~ /^=== /;
+       return @out;
 }
 
 # send a tranche of lines to the other end
 sub send_tranche
 {
-  my ($self, $dxchan) = @_;
-  my @out;
-  my $to = $self->{tonode};
-  my $from = $self->{fromnode};
-  my $stream = $self->{stream};
-  my $i;
-  
-  for ($i = 0; $i < $self->{linesreq} && $self->{count} < @{$self->{lines}}; $i++, $self->{count}++) {
-    push @out, DXProt::pc29($to, $from, $stream, ${$self->{lines}}[$self->{count}]);
-  }
-  push @out, DXProt::pc32($to, $from, $stream) if $i < $self->{linesreq};
-  $dxchan->send(@out);
-}
+       my ($self, $dxchan) = @_;
+       my @out;
+       my $to = $self->{tonode};
+       my $from = $self->{fromnode};
+       my $stream = $self->{stream};
+       my $lines = $self->{lines};
+       my ($c, $i);
+       
+       for ($i = 0, $c = $self->{count}; $i < $self->{linesreq} && $c < @$lines; $i++, $c++) {
+               push @out, DXProt::pc29($to, $from, $stream, $lines->[$c]);
+    }
+    $self->{count} = $c;
 
+    push @out, DXProt::pc32($to, $from, $stream) if $i < $self->{linesreq};
+       $dxchan->send(@out);
+}
 
+       
 # find a message to send out and start the ball rolling
 sub queue_msg
 {
-  my $sort = shift;
-  my @nodelist = DXProt::get_all_ak1a();
-  my $ref;
-  my $clref;
-  my $dxchan;
-  
-  # bat down the message list looking for one that needs to go off site and whose
-  # nearest node is not busy.
-
-  dbg('msg', "queue msg ($sort)\n");
-  foreach $ref (@msg) {
-    # firstly, is it private and unread? if so can I find the recipient
-       # in my cluster node list offsite?
-       if ($ref->{private}) {
-         if ($ref->{read} == 0) {
-           $clref = DXCluster->get($ref->{to});
-               if ($clref && !grep { $clref->{dxchan} == $_ } DXCommandmode::get_all) {
-                 $dxchan = $clref->{dxchan};
-                 $ref->start_msg($dxchan) if $clref && !get_busy($dxchan->call);
+       my $sort = shift;
+       my $ref;
+       my $clref;
+       
+       # bat down the message list looking for one that needs to go off site and whose
+       # nearest node is not busy.
+
+       dbg("queue msg ($sort)\n") if isdbg('msg');
+       my @nodelist = DXChannel::get_all_nodes;
+       foreach $ref (@msg) {
+
+               # ignore 'delayed' messages until their waiting time has expired
+               if (exists $ref->{waitt}) {
+                       next if $ref->{waitt} > $main::systime;
+                       delete $ref->{waitt};
+               } 
+
+               # any time outs?
+               if (exists $ref->{lastt} && $main::systime >= $ref->{lastt} + $timeout) {
+                       my $node = $ref->{tonode};
+                       dbg("Timeout, stopping msgno: $ref->{msgno} -> $node") if isdbg('msg');
+                       Log('msg', "Timeout, stopping msgno: $ref->{msgno} -> $node");
+                       $ref->stop_msg($node);
+                       
+                       # delay any outgoing messages that fail
+                       $ref->{waitt} = $main::systime + $waittime + int rand(120) if $node ne $main::mycall;
+                       delete $ref->{lastt};
+                       next;
                }
-         }
-       } elsif ($sort == undef) {
-      # otherwise we are dealing with a bulletin, compare the gotit list with
-         # the nodelist up above, if there are sites that haven't got it yet
-         # then start sending it - what happens when we get loops is anyone's
-         # guess, use (to, from, time, subject) tuple?
-         my $noderef;
-         foreach $noderef (@nodelist) {
-           next if $noderef->call eq $main::mycall;
-               next if grep { $_ eq $noderef->call } @{$ref->{gotit}};
+
+               # is it being sent anywhere currently?
+               next if $ref->{tonode};           # ignore it if it already being processed
                
-               # if we are here we have a node that doesn't have this message
-               $ref->start_msg($noderef) if !get_busy($noderef->call);
-               last;
-         } 
+               # is it awaiting deletion?
+               next if $ref->{delete};
+               
+               # firstly, is it private and unread? if so can I find the recipient
+               # in my cluster node list offsite?
+
+               # deal with routed private messages
+               my $dxchan;
+               if ($ref->{private}) {
+                       next if $ref->{'read'};           # if it is read, it is stuck here
+                       $clref = Route::get($ref->{to});
+                       if ($clref) {
+                               $dxchan = $clref->dxchan;
+                               if ($dxchan) {
+                                       if ($dxchan->is_node) {
+                                               next if $clref->call eq $main::mycall;  # i.e. it lives here
+                                               $ref->start_msg($dxchan) if !get_busy($dxchan->call)  && $dxchan->state eq 'normal';
+                                       }
+                               } else {
+                                       dbg("Route: No dxchan for $ref->{to} " . ref($clref) ) if isdbg('msg');
+                               }
+                       }
+               } else {
+                       
+                       # otherwise we are dealing with a bulletin or forwarded private message
+                       # compare the gotit list with
+                       # the nodelist up above, if there are sites that haven't got it yet
+                       # then start sending it - what happens when we get loops is anyone's
+                       # guess, use (to, from, time, subject) tuple?
+                       foreach $dxchan (@nodelist) {
+                               my $call = $dxchan->call;
+                               next unless $call;
+                               next if $call eq $main::mycall;
+                               next if ref $ref->{gotit} && grep $_ eq $call, @{$ref->{gotit}};
+                               next unless $ref->forward_it($call);           # check the forwarding file
+                               next if $ref->{tonode};           # ignore it if it already being processed
+                               
+                               # if we are here we have a node that doesn't have this message
+                               if (!get_busy($call)  && $dxchan->state eq 'normal') {
+                                       $ref->start_msg($dxchan);
+                                       last;
+                               }
+                       }
+               }
+
+               # if all the available nodes are busy then stop
+               last if @nodelist == scalar grep { get_busy($_->call) } @nodelist;
        }
+
        
-       # if all the available nodes are busy then stop
-       last if @nodelist == scalar grep { get_busy($_->call) } @nodelist;
-  }
+}
+
+# is there a message for me?
+sub for_me
+{
+       my $call = uc shift;
+       my $ref;
+       my $count;
+       
+       foreach $ref (@msg) {
+               # is it for me, private and unread? 
+               if ($ref->{to} eq $call && $ref->{private}) {
+                  $count++ unless $ref->{'read'} || $ref->{delete};
+               }
+       }
+       return $count;
 }
 
 # start the message off on its travels with a PC28
 sub start_msg
 {
-  my ($self, $dxchan) = @_;
-
-  dbg('msg', "start msg $self->{msgno}\n");
-  $self->{linesreq} = 5;
-  $self->{count} = 0;
-  $self->{tonode} = $dxchan->call;
-  $self->{fromnode} = $main::mycall;
-  $busy{$dxchan->call} = $self;
-  $work{"$self->{tonode}"} = $self;
-  $dxchan->send(DXProt::pc28($self->{tonode}, $self->{fromnode}, $self->{to}, $self->{from}, $self->{t}, $self->{private}, $self->{subject}, $self->{origin}, $self->{rrreq}));
+       my ($self, $dxchan) = @_;
+       
+       confess("trying to start started msg $self->{msgno} nodes: $self->{fromnode} -> $self->{tonode}") if $self->{tonode};
+       dbg("start msg $self->{msgno}\n") if isdbg('msg');
+       $self->{linesreq} = 10;
+       $self->{count} = 0;
+       $self->{tonode} = $dxchan->call;
+       $self->{fromnode} = $main::mycall;
+       set_busy($self->{tonode}, $self);
+       set_fwq($self->{tonode}, undef, $self);
+       $self->{lastt} = $main::systime;
+       my ($fromnode, $origin);
+       $fromnode = $self->{fromnode};
+       $origin = $self->{origin};
+       $dxchan->send(DXProt::pc28($self->{tonode}, $fromnode, $self->{to}, $self->{from}, $self->{t}, $self->{private}, $self->{subject}, $origin, $self->{rrreq}));
 }
 
 # get the ref of a busy node
 sub get_busy
 {
-  my $call = shift;
-  return $busy{$call};
+       my $call = shift;
+       return $busy{$call};
 }
 
-# get the busy queue
+sub set_busy
+{
+       my $call = shift;
+       return $busy{$call} = shift;
+}
+
+sub del_busy
+{
+       my $call = shift;
+       return delete $busy{$call};
+}
+
+# get the whole busy queue
 sub get_all_busy
 {
-  return values %busy;
+       return keys %busy;
 }
 
-# get the forwarding queue
+# get a forwarding queue entry
 sub get_fwq
 {
-  return values %work;
+       my $call = shift;
+       my $stream = shift || '0';
+       return $work{"$call,$stream"};
+}
+
+# delete a forwarding queue entry
+sub del_fwq
+{
+       my $call = shift;
+       my $stream = shift || '0';
+       return delete $work{"$call,$stream"};
+}
+
+# set a fwq entry
+sub set_fwq
+{
+       my $call = shift;
+       my $stream = shift || '0';
+       return $work{"$call,$stream"} = shift;
+}
+
+# get the whole forwarding queue
+sub get_all_fwq
+{
+       return keys %work;
 }
 
 # stop a message from continuing, clean it out, unlock interlocks etc
 sub stop_msg
 {
-  my ($self, $dxchan) = @_;
-  my $node = $dxchan->call;
+       my $self = shift;
+       my $node = shift;
+       my $stream = $self->{stream};
+       
+       
+       dbg("stop msg $self->{msgno} -> node $node\n") if isdbg('msg');
+       del_fwq($node, $stream);
+       $self->workclean;
+       del_busy($node);
+}
 
-  dbg('msg', "stop msg $self->{msgno} stream $self->{stream}\n");
-  delete $work{$node};
-  delete $work{"$node$self->{stream}"};
-  $self->workclean;
-  delete $busy{$node};
+sub workclean
+{
+       my $ref = shift;
+       delete $ref->{lines};
+       delete $ref->{linesreq};
+       delete $ref->{tonode};
+       delete $ref->{fromnode};
+       delete $ref->{stream};
+       delete $ref->{file};
+       delete $ref->{count};
+       delete $ref->{tempr};
+       delete $ref->{lastt};
+       delete $ref->{waitt};
 }
 
 # get a new transaction number from the file specified
 sub next_transno
 {
-  my $name = shift;
-  $name =~ s/\W//og;      # remove non-word characters
-  my $fn = "$msgdir/$name";
-  my $msgno;
-  
-  my $fh = new FileHandle;
-  if (sysopen($fh, $fn, O_RDWR|O_CREAT, 0666)) {
-    $fh->autoflush(1);
-       $msgno = $fh->getline;
-       chomp $msgno;
-       $msgno++;
-       seek $fh, 0, 0;
-       $fh->print("$msgno\n");
-       dbg('msg', "msgno $msgno allocated for $name\n");
-       $fh->close;
-  } else {
-    confess "can't open $fn $!";
-  }
-  return $msgno;
+       my $name = shift;
+       $name =~ s/\W//og;                      # remove non-word characters
+       my $fn = "$msgdir/$name";
+       my $msgno;
+       
+       my $fh = new IO::File;
+       if (sysopen($fh, $fn, O_RDWR|O_CREAT, 0666)) {
+               $fh->autoflush(1);
+               $msgno = $fh->getline || '0';
+               chomp $msgno;
+               $msgno++;
+               seek $fh, 0, 0;
+               $fh->print("$msgno\n");
+               dbg("msgno $msgno allocated for $name\n") if isdbg('msg');
+               $fh->close;
+       } else {
+               confess "can't open $fn $!";
+       }
+       return $msgno;
 }
 
 # initialise the message 'system', read in all the message headers
 sub init
 {
-  my $dir = new FileHandle;
-  my @dir;
-  my $ref;
+       my $dir = new IO::File;
+       my @dir;
+       my $ref;
+               
+       # load various control files
+       dbg("load badmsg: " . (load_badmsg() or "Ok"));
+       dbg("load forward: " . (load_forward() or "Ok"));
+       dbg("load swop: " . (load_swop() or "Ok"));
 
-  # read in the directory
-  opendir($dir, $msgdir) or confess "can't open $msgdir $!";
-  @dir = readdir($dir);
-  closedir($dir);
-  
-  for (sort @dir) {
-    next if /^\./o;
-       next if ! /^m\d+/o;
+       # read in the directory
+       opendir($dir, $msgdir) or confess "can't open $msgdir $!";
+       @dir = readdir($dir);
+       closedir($dir);
 
-    $ref = read_msg_header("$msgdir/$_");
-       next if !$ref;
-       
-       # add the message to the available queue
-       add_dir($ref); 
-       
-  }
+       @msg = ();
+       for (sort @dir) {
+               next unless /^m\d\d\d\d\d\d$/;
+               
+               $ref = read_msg_header("$msgdir/$_");
+               unless ($ref) {
+                       dbg("Deleting $_");
+                       Log('err', "Deleting $_");
+                       unlink "$msgdir/$_";
+                       next;
+               }
+               
+               # delete any messages to 'badmsg.pl' places
+               if ($ref->dump_it('')) {
+                       dbg("'Bad' TO address $ref->{to}") if isdbg('msg');
+                       Log('msg', "'Bad' TO address $ref->{to}");
+                       $ref->del_msg;
+                       next;
+               }
+
+               # add the message to the available queue
+               add_dir($ref); 
+       }
 }
 
 # add the message to the directory listing
 sub add_dir
 {
-  my $ref = shift;
-  confess "tried to add a non-ref to the msg directory" if !ref $ref;
-  push @msg, $ref;
+       my $ref = shift;
+       confess "tried to add a non-ref to the msg directory" if !ref $ref;
+       push @msg, $ref;
 }
 
 # return all the current messages
 sub get_all
 {
-  return @msg;
+       return @msg;
 }
 
 # get a particular message
 sub get
 {
-  my $msgno = shift;
-  for (@msg) {
-    return $_ if $_->{msgno} == $msgno;
-    last if $_->{msgno} > $msgno;
-  }
-  return undef;
+       my $msgno = shift;
+       for (@msg) {
+               return $_ if $_->{msgno} == $msgno;
+               last if $_->{msgno} > $msgno;
+       }
+       return undef;
 }
 
 # return the official filename for a message no
 sub filename
 {
-  return sprintf "$msgdir/m%06d", shift;
+       return sprintf "$msgdir/m%06d", shift;
 }
 
 #
@@ -578,7 +1045,7 @@ sub filename
 
 sub fields
 {
-  return keys(%valid);
+       return keys(%valid);
 }
 
 #
@@ -587,83 +1054,511 @@ sub fields
 
 sub field_prompt
 { 
-  my ($self, $ele) = @_;
-  return $valid{$ele};
+       my ($self, $ele) = @_;
+       return $valid{$ele};
 }
 
-no strict;
-sub AUTOLOAD
+#
+# send a message state machine
+sub do_send_stuff
 {
-  my $self = shift;
-  my $name = $AUTOLOAD;
-  return if $name =~ /::DESTROY$/;
-  $name =~ s/.*:://o;
-  
-  confess "Non-existant field '$AUTOLOAD'" if !$valid{$name};
-  @_ ? $self->{$name} = shift : $self->{$name} ;
+       my $self = shift;
+       my $line = shift;
+       my @out;
+       
+       if ($self->state eq 'send1') {
+               #  $DB::single = 1;
+               confess "local var gone missing" if !ref $self->{loc};
+               my $loc = $self->{loc};
+               if (my @ans = BadWords::check($line)) {
+                       $self->{badcount} += @ans;
+                       Log('msg', $self->call . " used badwords: @ans to @{$loc->{to}} in msg");
+                       $loc->{reject}++;
+               }
+               $loc->{subject} = $line;
+               $loc->{lines} = [];
+               $self->state('sendbody');
+               #push @out, $self->msg('sendbody');
+               push @out, $self->msg('m8');
+       } elsif ($self->state eq 'sendbody') {
+               confess "local var gone missing" if !ref $self->{loc};
+               my $loc = $self->{loc};
+               if ($line eq "\032" || $line eq '%1A' || uc $line eq "/EX") {
+                       my $to;
+                       unless ($loc->{reject}) {
+                               foreach $to (@{$loc->{to}}) {
+                                       my $ref;
+                                       my $systime = $main::systime;
+                                       my $mycall = $main::mycall;
+                                       $ref = DXMsg->alloc(DXMsg::next_transno('Msgno'),
+                                                                               uc $to,
+                                                                               exists $loc->{from} ? $loc->{from} : $self->call, 
+                                                                               $systime,
+                                                                               $loc->{private}, 
+                                                                               $loc->{subject}, 
+                                                                               exists $loc->{origin} ? $loc->{origin} : $mycall,
+                                                                               '0',
+                                                                               $loc->{rrreq});
+                                       $ref->swop_it($self->call);
+                                       $ref->store($loc->{lines});
+                                       $ref->add_dir();
+                                       push @out, $self->msg('m11', $ref->{msgno}, $to);
+                                       #push @out, "msgno $ref->{msgno} sent to $to";
+                                       $ref->notify;
+                               }
+                       } else {
+                               LogDbg('msg', $self->call . " swore to @{$loc->{to}} subject: '$loc->{subject}' in msg, REJECTED");
+                       }
+                       
+                       delete $loc->{lines};
+                       delete $loc->{to};
+                       delete $self->{loc};
+                       $self->func(undef);
+                       
+                       $self->state('prompt');
+               } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
+                       #push @out, $self->msg('sendabort');
+                       push @out, $self->msg('m10');
+                       delete $loc->{lines};
+                       delete $loc->{to};
+                       delete $self->{loc};
+                       $self->func(undef);
+                       $self->state('prompt');
+               } elsif ($line =~ m|^/+\w+|) {
+                       # this is a command that you want display for your own reference
+                       # or if it has TWO slashes is a command 
+                       $line =~ s|^/||;
+                       my $store = $line =~ s|^/+||;
+                       my @in = $self->run_cmd($line);
+                       push @out, @in;
+                       if ($store) {
+                               foreach my $l (@in) {
+                                       if (my @ans = BadWords::check($l)) {
+                                               $self->{badcount} += @ans;
+                                               Log('msg', $self->call . " used badwords: @ans to @{$loc->{to}} subject: '$loc->{subject}' in msg") unless $loc->{reject};
+                                               Log('msg', "line: $l");
+                                               $loc->{reject}++;
+                                       } 
+                                       push @{$loc->{lines}}, length($l) > 0 ? $l : " ";
+                               }
+                       }
+               } else {
+                       if (my @ans = BadWords::check($line)) {
+                               $self->{badcount} += @ans;
+                               Log('msg', $self->call . " used badwords: @ans to @{$loc->{to}} subject: '$loc->{subject}' in msg") unless $loc->{reject};
+                               Log('msg', "line: $line");
+                               $loc->{reject}++;
+                       }
+
+                       if ($loc->{lines} && @{$loc->{lines}}) {
+                               push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
+                       } else {
+                               # temporarily store any R: lines so that we end up with 
+                               # only the first and last ones stored.
+                               if ($line =~ m|^R:\d{6}/\d{4}|) {
+                                       push @{$loc->{tempr}}, $line;
+                               } else {
+                                       if (exists $loc->{tempr}) {
+                                               push @{$loc->{lines}}, shift @{$loc->{tempr}};
+                                               push @{$loc->{lines}}, pop @{$loc->{tempr}} if @{$loc->{tempr}};
+                                               delete $loc->{tempr};
+                                       }
+                                       push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
+                               } 
+                       }
+                       
+                       # i.e. it ain't and end or abort, therefore store the line
+               }
+       }
+       return @out;
 }
 
-sub do_send_stuff
+# return the standard directory line for this ref 
+sub dir
 {
-  my $self = shift;
-  my $line = shift;
-  my @out;
-  
-  if ($self->state eq 'send1') {
-#  $DB::single = 1;
-    confess "local var gone missing" if !ref $self->{loc};
-       my $loc = $self->{loc};
-       $loc->{subject} = $line;
-       $loc->{lines} = [];
-       $self->state('sendbody');
-       #push @out, $self->msg('sendbody');
-       push @out, "Enter Message /EX (^Z) to send or /ABORT (^Y) to exit";
-  } elsif ($self->state eq 'sendbody') {
-    confess "local var gone missing" if !ref $self->{loc};
-       my $loc = $self->{loc};
-       if ($line eq "\032" || uc $line eq "/EX") {
-      my $to;
-   
-      if (@{$loc->{lines}} > 0) {
-           foreach $to (@{$loc->{to}}) {
-             my $ref;
-                 my $systime = $main::systime;
-                 my $mycall = $main::mycall;
-                 $ref = DXMsg->alloc(DXMsg::next_transno('Msgno'),
-                               uc $to,
-                                                       $self->call, 
-                                                       $systime,
-                                                       $loc->{private}, 
-                                                       $loc->{subject}, 
-                                                       $mycall, 
-                                                       $loc->{rrreq});
-             $ref->store($loc->{lines});
-                 $ref->add_dir();
-                 #push @out, $self->msg('sendsent', $to);
-                 push @out, "msgno $ref->{msgno} sent to $to";
-           }
-         }
-         delete $loc->{lines};
-         delete $loc->{to};
-         delete $self->{loc};
-         $self->state('prompt');
-         $self->func(undef);
-         DXMsg::queue_msg();
-    } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
-      #push @out, $self->msg('sendabort');
-         push @out, "aborted";
-         delete $loc->{lines};
-         delete $loc->{to};
-         delete $self->{loc};
-         $self->func(undef);
-         $self->state('prompt');
-    } else {
-  
-      # i.e. it ain't and end or abort, therefore store the line
-      push @{$loc->{lines}}, $line;
-    }
-  }
-  return (1, @out);
+       my $ref = shift;
+       my $flag = $ref->{private} && $ref->{read} ? '-' : ' ';
+       if ($ref->{keep}) {
+               $flag = '!';
+       } elsif ($ref->{delete}) {
+               $flag = $ref->{deletetime} > $main::systime ? 'D' : 'E'; 
+       }
+       return sprintf("%6d%s%s%5d %8.8s %8.8s %-6.6s %5.5s %-30.30s", 
+                                  $ref->{msgno}, $flag, $ref->{private} ? 'p' : ' ', 
+                                  $ref->{size}, $ref->{to}, $ref->{from}, cldate($ref->{t}), 
+                                  ztime($ref->{t}), $ref->{subject});
+}
+
+# load the forward table
+sub load_forward
+{
+       my @out;
+       my $s = readfilestr($forwardfn);
+       if ($s) {
+               eval $s;
+               push @out, $@ if $@;
+       }
+       return @out;
+}
+
+# load the bad message table
+sub load_badmsg
+{
+       my @out;
+       my $s = readfilestr($badmsgfn);
+       if ($s) {
+               eval $s;
+               push @out, $@ if $@;
+       }
+       return @out;
+}
+
+# load the swop message table
+sub load_swop
+{
+       my @out;
+       my $s = readfilestr($swopfn);
+       if ($s) {
+               eval $s;
+               push @out, $@ if $@;
+       }
+       return @out;
+}
+
+#
+# forward that message or not according to the forwarding table
+# returns 1 for forward, 0 - to ignore
+#
+
+sub forward_it
+{
+       my $ref = shift;
+       my $call = shift;
+       my $i;
+       
+       for ($i = 0; $i < @forward; $i += 5) {
+               my ($sort, $field, $pattern, $action, $bbs) = @forward[$i..($i+4)]; 
+               my $tested;
+               
+               # are we interested?
+               next if $ref->{private} && $sort ne 'P';
+               next if !$ref->{private} && $sort ne 'B';
+               
+               # select field
+               $tested = $ref->{to} if $field eq 'T';
+               $tested = $ref->{from} if $field eq 'F';
+               $tested = $ref->{origin} if $field eq 'O';
+               $tested = $ref->{subject} if $field eq 'S';
+
+               if (!$pattern || $tested =~ m{$pattern}i) {
+                       return 0 if $action eq 'I';
+                       return 1 if !$bbs || grep $_ eq $call, @{$bbs};
+               }
+       }
+       return 0;
+}
+
+#
+# look down the forward table to see whether this is a valid bull
+# or not (ie it will forward somewhere even if it is only here)
+#
+sub valid_bull_addr
+{
+       my $call = shift;
+       my $i;
+       
+       unless (@forward) {
+               return 1 if $call =~ /^ALL/;
+               return 1 if $call =~ /^DX/;
+               return 0;
+       }
+       
+       for ($i = 0; $i < @forward; $i += 5) {
+               my ($sort, $field, $pattern, $action, $bbs) = @forward[$i..($i+4)]; 
+               if ($field eq 'T') {
+                       if (!$pattern || $call =~ m{$pattern}i) {
+                               return 1;
+                       }
+               }
+       }
+       return 0;
+}
+
+sub dump_it
+{
+       my $ref = shift;
+       my $call = shift;
+       my $i;
+       
+       for ($i = 0; $i < @badmsg; $i += 3) {
+               my ($sort, $field, $pattern) = @badmsg[$i..($i+2)]; 
+               my $tested;
+               
+               # are we interested?
+               next if $ref->{private} && $sort ne 'P';
+               next if !$ref->{private} && $sort ne 'B';
+               
+               # select field
+               $tested = $ref->{to} if $field eq 'T';
+               $tested = $ref->{from} if $field eq 'F';
+               $tested = $ref->{origin} if $field eq 'O';
+               $tested = $ref->{subject} if $field eq 'S';
+               $tested = $call if $field eq 'I';
+
+               if (!$pattern || $tested =~ m{$pattern}i) {
+                       return 1;
+               }
+       }
+       return 0;
+}
+
+sub swop_it
+{
+       my $ref = shift;
+       my $call = shift;
+       my $i;
+       my $count = 0;
+       
+       for ($i = 0; $i < @swop; $i += 5) {
+               my ($sort, $field, $pattern, $tfield, $topattern) = @swop[$i..($i+4)]; 
+               my $tested;
+               my $swop;
+               my $old;
+               
+               # are we interested?
+               next if $ref->{private} && $sort ne 'P';
+               next if !$ref->{private} && $sort ne 'B';
+               
+               # select field
+               $tested = $ref->{to} if $field eq 'T';
+               $tested = $ref->{from} if $field eq 'F';
+               $tested = $ref->{origin} if $field eq 'O';
+               $tested = $ref->{subject} if $field eq 'S';
+
+               # select swop field
+               $old = $swop = $ref->{to} if $tfield eq 'T';
+               $old = $swop = $ref->{from} if $tfield eq 'F';
+               $old = $swop = $ref->{origin} if $tfield eq 'O';
+               $old = $swop = $ref->{subject} if $tfield eq 'S';
+
+               if ($tested =~ m{$pattern}i) {
+                       if ($tested eq $swop) {
+                               $swop =~ s{$pattern}{$topattern}i;
+                       } else {
+                               $swop = $topattern;
+                       }
+                       Log('msg', "Msg $ref->{msgno}: $tfield $old -> $swop");
+                       Log('dbg', "Msg $ref->{msgno}: $tfield $old -> $swop");
+                       $ref->{to} = $swop if $tfield eq 'T';
+                       $ref->{from} = $swop if $tfield eq 'F';
+                       $ref->{origin} = $swop if $tfield eq 'O';
+                       $ref->{subject} = $swop if $tfield eq 'S';
+                       ++$count;
+               }
+       }
+       return $count;
+}
+
+# import any msgs in the import directory
+# the messages are in BBS format (but may have cluster extentions
+# so SB UK < GB7TLH is legal
+sub import_msgs
+{
+       # are there any to do in this directory?
+       return unless -d $importfn;
+       unless (opendir(DIR, $importfn)) {
+               dbg("can\'t open $importfn $!") if isdbg('msg');
+               Log('msg', "can\'t open $importfn $!");
+               return;
+       } 
+
+       my @names = readdir(DIR);
+       closedir(DIR);
+       my $name;
+       foreach $name (@names) {
+               next if $name =~ /^\./;
+               my $splitit = $name =~ /^split/;
+               my $fn = "$importfn/$name";
+               next unless -f $fn;
+               unless (open(MSG, $fn)) {
+                       dbg("can\'t open import file $fn $!") if isdbg('msg');
+                       Log('msg', "can\'t open import file $fn $!");
+                       unlink($fn);
+                       next;
+               }
+               my @msg = map { chomp; $_ } <MSG>;
+               close(MSG);
+               unlink($fn);
+               my @out = import_one($main::me, \@msg, $splitit);
+               Log('msg', @out);
+       }
+}
+
+# import one message as a list in bbs (as extended) mode
+# takes a reference to an array containing the whole message
+sub import_one
+{
+       my $dxchan = shift;
+       my $ref = shift;
+       my $splitit = shift;
+       my $private = '1';
+       my $rr = '0';
+       my $notincalls = 1;
+       my $from = $dxchan->call;
+       my $origin = $main::mycall;
+       my @to;
+       my @out;
+                               
+       # first line;
+       my $line = shift @$ref;
+       my @f = split /([\s\@\$])/, $line;
+       @f = map {s/\s+//g; length $_ ? $_ : ()} @f;
+
+       unless (@f && $f[0] =~ /^(:?S|SP|SB|SEND)$/ ) {
+               my $m = "invalid first line in import '$line'";
+               dbg($m) if isdbg('msg');
+               return (1, $m);
+       }
+       while (@f) {
+               my $f = uc shift @f;
+               next if $f eq 'SEND';
+
+               # private / noprivate / rr
+               if ($notincalls && ($f eq 'B' || $f eq 'SB' || $f =~ /^NOP/oi)) {
+                       $private = '0';
+               } elsif ($notincalls && ($f eq 'P' || $f eq 'SP' || $f =~ /^PRI/oi)) {
+                       ;
+               } elsif ($notincalls && ($f eq 'RR')) {
+                       $rr = '1';
+               } elsif (($f =~ /^[\@\.\#\$]$/ || $f eq '.#') && @f) {       # this is bbs syntax, for AT
+                       shift @f;
+               } elsif ($f eq '<' && @f) {     # this is bbs syntax  for from call
+                       $from = uc shift @f;
+               } elsif ($f =~ /^\$/) {     # this is bbs syntax  for a bid
+                       next;
+               } elsif ($f =~ /^<(\S+)/) {     # this is bbs syntax  for from call
+                       $from = $1;
+               } elsif ($f =~ /^\$\S+/) {     # this is bbs syntax for bid
+                       ;
+               } else {
+
+                       # callsign ?
+                       $notincalls = 0;
+
+                       # is this callsign a distro?
+                       my $fn = "$msgdir/distro/$f.pl";
+                       if (-e $fn) {
+                               my $fh = new IO::File $fn;
+                               if ($fh) {
+                                       local $/ = undef;
+                                       my $s = <$fh>;
+                                       $fh->close;
+                                       my @call;
+                                       @call = eval $s;
+                                       return (1, "Error in Distro $f.pl:", $@) if $@;
+                                       if (@call > 0) {
+                                               push @f, @call;
+                                               next;
+                                       }
+                               }
+                       }
+                       
+                       if (grep $_ eq $f, @DXMsg::badmsg) {
+                               push @out, $dxchan->msg('m3', $f);
+                       } else {
+                               push @to, $f;
+                       }
+               }
+       }
+       
+       # subject is the next line
+       my $subject = shift @$ref;
+       
+       # strip off trailing lines 
+       pop @$ref while (@$ref && $$ref[-1] =~ /^\s*$/);
+       
+       # strip off /EX or /ABORT
+       return ("aborted") if @$ref && $$ref[-1] =~ m{^/ABORT$}i; 
+       pop @$ref if (@$ref && $$ref[-1] =~ m{^/EX$}i);                                                                  
+
+       # sort out any splitting that needs to be done
+       my @chunk;
+       if ($splitit) {
+               my $lth = 0;
+               my $lines = [];
+               for (@$ref) {
+                       if ($lth >= $maxchunk || ($lth > $minchunk && /^\s*$/)) {
+                               push @chunk, $lines;
+                               $lines = [];
+                               $lth = 0;
+                       } 
+                       push @$lines, $_;
+                       $lth += length; 
+               }
+               push @chunk, $lines if @$lines;
+       } else {
+               push @chunk, $ref;
+       }
+
+       # does an identical message already exist?
+       my $m;
+       for $m (@msg) {
+               if (substr($subject,0,28) eq substr($m->{subject},0,28) && $from eq $m->{from} && grep $m->{to} eq $_, @to) {
+                       my $msgno = $m->{msgno};
+                       dbg("duplicate message from $from -> $m->{to} to msg: $msgno") if isdbg('msg');
+                       Log('msg', "duplicate message from $from -> $m->{to} to msg: $msgno");
+                       return;
+               }
+       }
+
+    # write all the messages away
+       my $i;
+       for ( $i = 0;  $i < @chunk; $i++) {
+               my $chunk = $chunk[$i];
+               my $ch_subject;
+               if (@chunk > 1) {
+                       my $num = " [" . ($i+1) . "/" . scalar @chunk . "]";
+                       $ch_subject = substr($subject, 0, 27 - length $num) .  $num;
+               } else {
+                       $ch_subject = $subject;
+               }
+               my $to;
+               foreach $to (@to) {
+                       my $systime = $main::systime;
+                       my $mycall = $main::mycall;
+                       my $mref = DXMsg->alloc(DXMsg::next_transno('Msgno'),
+                                                                       $to,
+                                                                       $from, 
+                                                                       $systime,
+                                                                       $private, 
+                                                                       $ch_subject, 
+                                                                       $origin,
+                                                                       '0',
+                                                                       $rr);
+                       $mref->swop_it($main::mycall);
+                       $mref->store($chunk);
+                       $mref->add_dir();
+                       push @out, $dxchan->msg('m11', $mref->{msgno}, $to);
+                       #push @out, "msgno $ref->{msgno} sent to $to";
+                       $mref->notify;
+               }
+       }
+       return @out;
+}
+
+#no strict;
+sub AUTOLOAD
+{
+       no strict;
+       my $name = $AUTOLOAD;
+       return if $name =~ /::DESTROY$/;
+       $name =~ s/^.*:://o;
+       
+       confess "Non-existant field '$AUTOLOAD'" if !$valid{$name};
+       # this clever line of code creates a subroutine which takes over from autoload
+       # from OO Perl - Conway
+       *$AUTOLOAD = sub {@_ > 1 ? $_[0]->{$name} = $_[1] : $_[0]->{$name}};
+       goto &$AUTOLOAD;
 }
 
 1;