X-Git-Url: http://dxcluster.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FDXCommandmode.pm;h=c01085a548693a996576b80b16732209435e8be0;hb=739e43e916395422707c1df9245aeb1812bfb85b;hp=928981abd0effd850d4d301db6ccc41673c9726a;hpb=2546ef0cfaaca39e65985e414258071a636979af;p=spider.git

diff --git a/perl/DXCommandmode.pm b/perl/DXCommandmode.pm
index 928981ab..c01085a5 100644
--- a/perl/DXCommandmode.pm
+++ b/perl/DXCommandmode.pm
@@ -9,6 +9,8 @@
 
 package DXCommandmode;
 
+use POSIX;
+
 @ISA = qw(DXChannel);
 
 use DXUtil;
@@ -17,13 +19,37 @@ use DXUser;
 use DXVars;
 use DXDebug;
 use DXM;
-use Carp;
+use DXLog;
+use DXLogPrint;
+use DXBearing;
+use CmdAlias;
+use Filter;
+use Minimuf;
+use DXDb;
+use AnnTalk;
+use WCY;
+use Sun;
+use Internet;
+use Script;
+
 
 use strict;
-use vars qw(%Cache %cmd_cache);
+use vars qw(%Cache %cmd_cache $errstr %aliases $scriptbase $maxerrors %nothereslug $maxbadcount);
+
+%Cache = ();					# cache of dynamically loaded routine's mod times
+%cmd_cache = ();				# cache of short names
+$errstr = ();					# error string from eval
+%aliases = ();					# aliases for (parts of) commands
+$scriptbase = "$main::root/scripts"; # the place where all users start scripts go
+$maxerrors = 20;				# the maximum number of concurrent errors allowed before disconnection
+$maxbadcount = 3;				# no of bad words allowed before disconnection
 
-%Cache = ();                  # cache of dynamically loaded routine's mod times
-%cmd_cache = ();            # cache of short names
+
+use vars qw($VERSION $BRANCH);
+$VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
+$BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/ ) || 0;
+$main::build += $VERSION;
+$main::branch += $BRANCH;
 
 #
 # obtain a new connection this is derived from dxchannel
@@ -31,9 +57,15 @@ use vars qw(%Cache %cmd_cache);
 
 sub new 
 {
-  my $self = DXChannel::alloc(@_);
-  $self->{sort} = 'U';   # in absence of how to find out what sort of an object I am
-  return $self;
+	my $self = DXChannel::alloc(@_);
+
+	# routing, this must go out here to prevent race condx
+	my $pkg = shift;
+	my $call = shift;
+	my @rout = $main::routeroot->add_user($call, Route::here(1));
+	DXProt::route_pc16($main::me, $main::routeroot, @rout) if @rout;
+
+	return $self;
 }
 
 # this is how a a connection starts, you get a hello message and the motd with
@@ -42,78 +74,374 @@ sub new
 
 sub start
 { 
-  my ($self, $line) = @_;
-  my $user = $self->{user};
-  my $call = $self->{call};
-  my $name = $user->{name};
-
-  $self->{name} = $name ? $name : $call;
-  $self->msg('l2',$self->{name});
-  $self->send_file($main::motd) if (-e $main::motd);
-  $self->msg('pr', $call);
-  $self->state('prompt');                  # a bit of room for further expansion, passwords etc
-  $self->{priv} = $user->priv;
-  $self->{priv} = 0 if $line =~ /^(ax|te)/;     # set the connection priv to 0 - can be upgraded later
-  $self->{consort} = $line;                # save the connection type
-
-  # set some necessary flags on the user if they are connecting
-  $self->{wwv} = $self->{talk} = $self->{ann} = $self->{here} = $self->{dx} = 1;
-  $self->prompt() if $self->{state} =~ /^prompt/o;
-  
-  # add yourself to the database
-  my $node = DXNode->get($main::mycall) or die "$main::mycall not allocated in DXNode database";
-  my $cuser = DXNodeuser->new($self, $node, $call, 0, 1);
-  $node->dxchan($self) if $call eq $main::myalias;       # send all output for mycall to myalias
-  
-  # issue a pc16 to everybody interested
-  my $nchan = DXChannel->get($main::mycall);
-  my @pc16 = DXProt::pc16($nchan, $cuser);
-  DXProt::broadcast_ak1a(@pc16);
+	my ($self, $line, $sort) = @_;
+	my $user = $self->{user};
+	my $call = $self->{call};
+	my $name = $user->{name};
+	
+	# log it
+	my $host = $self->{conn}->{peerhost} || "unknown";
+	Log('DXCommand', "$call connected from $host");
+
+	$self->{name} = $name ? $name : $call;
+	$self->send($self->msg('l2',$self->{name}));
+	$self->state('prompt');		# a bit of room for further expansion, passwords etc
+	$self->{priv} = $user->priv || 0;
+	$self->{lang} = $user->lang || $main::lang || 'en';
+	$self->{pagelth} = $user->pagelth || 20;
+	($self->{width}) = $line =~ /width=(\d+)/;
+	$self->{width} = 80 unless $self->{width} && $self->{width} > 80;
+	$self->{consort} = $line;	# save the connection type
+	
+	# set some necessary flags on the user if they are connecting
+	$self->{beep} = $user->wantbeep;
+	$self->{ann} = $user->wantann;
+	$self->{wwv} = $user->wantwwv;
+	$self->{wcy} = $user->wantwcy;
+	$self->{talk} = $user->wanttalk;
+	$self->{wx} = $user->wantwx;
+	$self->{dx} = $user->wantdx;
+	$self->{logininfo} = $user->wantlogininfo;
+	$self->{ann_talk} = $user->wantann_talk;
+	$self->{here} = 1;
+
+	# sort out registration
+	if ($main::reqreg) {
+		$self->{registered} = $user->registered;
+	} else {
+		$self->{registered} = 1;
+	}
+
+
+	# decide which motd to send
+	my $motd = "${main::motd}_nor" unless $self->{registered};
+	$motd = $main::motd unless $motd && -e $motd;
+	$self->send_file($motd) if -e $motd;
+
+	# sort out privilege reduction
+	$self->{priv} = 0 if $line =~ /^(ax|te)/ && !$self->conn->{usedpasswd};
+
+	# get the filters
+	$self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'user_default', 0);
+	$self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'user_default', 0);
+	$self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'user_default', 0);
+	$self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'user_default', 0) ;
+
+	# clean up qra locators
+	my $qra = $user->qra;
+	$qra = undef if ($qra && !DXBearing::is_qra($qra));
+	unless ($qra) {
+		my $lat = $user->lat;
+		my $long = $user->long;
+		$user->qra(DXBearing::lltoqra($lat, $long)) if (defined $lat && defined $long);  
+	}
+
+	# decide on echo
+	my $echo = $user->wantecho;
+	unless ($echo) {
+		$self->send_now('E', "0");
+		$self->send($self->msg('echow'));
+		$self->conn->echo($echo) if $self->conn->can('echo');
+	}
+	
+	$self->tell_login('loginu');
+	
+	# do we need to send a forward/opernam?
+	my $lastoper = $user->lastoper || 0;
+	my $homenode = $user->homenode || ""; 
+	if ($homenode eq $main::mycall && $lastoper + $DXUser::lastoperinterval < $main::systime) {
+		run_cmd($main::me, "forward/opernam $call");
+		$user->lastoper($main::systime);
+	}
+
+	# run a script send the output to the punter
+	my $script = new Script(lc $call) || new Script('user_default');
+	$script->run($self) if $script;
+
+	# send cluster info
+	my $info = Route::cluster();
+	$self->send("Cluster:$info");
+
+	# send prompts and things
+	$self->send($self->msg('namee1')) if !$user->name;
+	$self->send($self->msg('qthe1')) if !$user->qth;
+	$self->send($self->msg('qll')) if !$user->qra || (!$user->lat && !$user->long);
+	$self->send($self->msg('hnodee1')) if !$user->qth;
+	$self->send($self->msg('m9')) if DXMsg::for_me($call);
+	$self->prompt;
 }
 
 #
 # This is the normal command prompt driver
 #
+
 sub normal
 {
-  my $self = shift;
-  my $user = $self->{user};
-  my $call = $self->{call};
-  my $cmdline = shift;
-
-  # strip out //
-  $cmdline =~ s|//|/|og;
-  
-  # split the command line up into parts, the first part is the command
-  my ($cmd, $args) = $cmdline =~ /^([\w\/]+)\s*(.*)/o;
-
-  if ($cmd) {
-    
-	my ($path, $fcmd);
-   
-    # first expand out the entry to a command
-    ($path, $fcmd) = search($main::localcmd, $cmd, "pl");
-    ($path, $fcmd) = search($main::cmd, $cmd, "pl") if !$path || !$fcmd;
-
-    my @ans = $self->eval_file($path, $fcmd, $args) if $path && $fcmd;
-#	@ans = $self->eval_file($main::cmd, $cmd, $args) if !$ans[0];
-	if ($ans[0]) {
-      shift @ans;
-	  $self->send(@ans) if @ans > 0;
+	my $self = shift;
+	my $cmdline = shift;
+	my @ans;
+	
+	# remove leading and trailing spaces
+	$cmdline =~ s/^\s*(.*)\s*$/$1/;
+	
+	if ($self->{state} eq 'page') {
+		my $i = $self->{pagelth};
+		my $ref = $self->{pagedata};
+		my $tot = @$ref;
+		
+		# abort if we get a line starting in with a
+		if ($cmdline =~ /^a/io) {
+			undef $ref;
+			$i = 0;
+		}
+        
+		# send a tranche of data
+		while ($i-- > 0 && @$ref) {
+			my $line = shift @$ref;
+			$line =~ s/\s+$//o;	# why am having to do this? 
+			$self->send($line);
+		}
+		
+		# reset state if none or else chuck out an intermediate prompt
+		if ($ref && @$ref) {
+			$tot -= $self->{pagelth};
+			$self->send($self->msg('page', $tot));
+		} else {
+			$self->state('prompt');
+		}
+	} elsif ($self->{state} eq 'sysop') {
+		my $passwd = $self->{user}->passwd;
+		if ($passwd) {
+			my @pw = grep {$_ !~ /\s/} split //, $passwd;
+			my @l = @{$self->{passwd}};
+			my $str = "$pw[$l[0]].*$pw[$l[1]].*$pw[$l[2]].*$pw[$l[3]].*$pw[$l[4]]";
+			if ($cmdline =~ /$str/) {
+				$self->{priv} = $self->{user}->priv;
+			} else {
+				$self->send($self->msg('sorry'));
+			}
+		} else {
+			$self->send($self->msg('sorry'));
+		}
+		$self->state('prompt');
+	} elsif ($self->{state} eq 'passwd') {
+		my $passwd = $self->{user}->passwd;
+		if ($passwd && $cmdline eq $passwd) {
+			$self->send($self->msg('pw1'));
+			$self->state('passwd1');
+		} else {
+			$self->conn->{echo} = $self->conn->{decho};
+			delete $self->conn->{decho};
+			$self->send($self->msg('sorry'));
+			$self->state('prompt');
+		}
+	} elsif ($self->{state} eq 'passwd1') {
+		$self->{passwd} = $cmdline;
+		$self->send($self->msg('pw2'));
+		$self->state('passwd2');
+	} elsif ($self->{state} eq 'passwd2') {
+		if ($cmdline eq $self->{passwd}) {
+			$self->{user}->passwd($cmdline);
+			$self->send($self->msg('pw3'));
+		} else {
+			$self->send($self->msg('pw4'));
+		}
+		$self->conn->{echo} = $self->conn->{decho};
+		delete $self->conn->{decho};
+		$self->state('prompt');
+	} elsif ($self->{state} eq 'talk') {
+		if ($cmdline =~ m{^(?:/EX|/ABORT)}i) {
+			for (@{$self->{talklist}}) {
+				$self->send_talks($_,  $self->msg('talkend'));
+			}
+			$self->state('prompt');
+			delete $self->{talklist};
+		} elsif ($cmdline =~ m(^/\w+)) {
+			$cmdline =~ s(^/)();
+			$self->send_ans(run_cmd($self, $cmdline));
+			$self->send($self->talk_prompt);
+		} elsif ($self->{talklist} && @{$self->{talklist}}) {
+			# send what has been said to whoever is in this person's talk list
+			my @bad;
+			if (@bad = BadWords::check($cmdline)) {
+				$self->badcount(($self->badcount||0) + @bad);
+				Log('DXCommand', "$self->{call} swore: $cmdline");
+			} else {
+				for (@{$self->{talklist}}) {
+					$self->send_talks($_, $cmdline);
+				}
+			}
+			$self->send($self->talk_prompt) if $self->{state} eq 'talk';
+		} else {
+			# for safety
+			$self->state('prompt');
+		}
+	} elsif (my $func = $self->{func}) {
+		no strict 'refs';
+		my @ans;
+		if (ref $self->{edit}) {
+			eval { @ans = $self->{edit}->$func($self, $cmdline)};
+		} else {
+			eval {	@ans = &{$self->{func}}($self, $cmdline) };
+		}
+		$self->send_ans("Syserr: on stored func $self->{func}", $@) if $@;
+		$self->send_ans(@ans);
 	} else {
-      shift @ans;
-	  if (@ans > 0) {
-	    $self->msg('e2', @ans);
-	  } else {
-        $self->msg('e1');
-	  }
+		$self->send_ans(run_cmd($self, $cmdline));
+	} 
+
+	# check for excessive swearing
+	if ($self->{badcount} && $self->{badcount} >= $maxbadcount) {
+		Log('DXCommand', "$self->{call} logged out for excessive swearing");
+		$self->disconnect;
+		return;
 	}
-  } else {
-    $self->msg('e1');
-  }
-  
-  # send a prompt only if we are in a prompt state
-  $self->prompt() if $self->{state} =~ /^prompt/o;
+
+	# send a prompt only if we are in a prompt state
+	$self->prompt() if $self->{state} =~ /^prompt/o;
+}
+
+# send out the talk messages taking into account vias and connectivity
+sub send_talks
+{
+	my ($self, $ent, $line) = @_;
+	
+	my ($to, $via) = $ent =~ /(\S+)>(\S+)/;
+	$to = $ent unless $to;
+	my $call = $via ? $via : $to;
+	my $clref = Route::get($call);
+	my $dxchan = $clref->dxchan if $clref;
+	if ($dxchan) {
+		$dxchan->talk($self->{call}, $to, $via, $line);
+	} else {
+		$self->send($self->msg('disc2', $via ? $via : $to));
+		my @l = grep { $_ ne $ent } @{$self->{talklist}};
+		if (@l) {
+			$self->{talklist} = \@l;
+		} else {
+			delete $self->{talklist};
+			$self->state('prompt');
+		}
+	}
+}
+
+sub talk_prompt
+{
+	my $self = shift;
+	my @call;
+	for (@{$self->{talklist}}) {
+		my ($to, $via) = /(\S+)>(\S+)/;
+		$to = $_ unless $to;
+		push @call, $to;
+	}
+	return $self->msg('talkprompt', join(',', @call));
+}
+
+#
+# send a load of stuff to a command user with page prompting
+# and stuff
+#
+
+sub send_ans
+{
+	my $self = shift;
+	
+	if ($self->{pagelth} && @_ > $self->{pagelth}) {
+		my $i;
+		for ($i = $self->{pagelth}; $i-- > 0; ) {
+			my $line = shift @_;
+			$line =~ s/\s+$//o;	# why am having to do this? 
+			$self->send($line);
+		}
+		$self->{pagedata} =  [ @_ ];
+		$self->state('page');
+		$self->send($self->msg('page', scalar @_));
+	} else {
+		for (@_) {
+			if (defined $_) {
+				$self->send($_);
+			} else {
+				$self->send('');
+			}
+		}
+	} 
+}
+# 
+# this is the thing that runs the command, it is done like this for the 
+# benefit of remote command execution
+#
+
+sub run_cmd
+{
+	my $self = shift;
+	my $user = $self->{user};
+	my $call = $self->{call};
+	my $cmdline = shift;
+	my @ans;
+	
+
+	return () if length $cmdline == 0;
+		
+	# strip out //
+	$cmdline =~ s|//|/|og;
+		
+	# split the command line up into parts, the first part is the command
+	my ($cmd, $args) = split /\s+/, $cmdline, 2;
+	$args = "" unless defined $args;
+		
+	if ($cmd) {
+			
+		my ($path, $fcmd);
+			
+		dbg("cmd: $cmd") if isdbg('command');
+			
+		# alias it if possible
+		my $acmd = CmdAlias::get_cmd($cmd);
+		if ($acmd) {
+			($cmd, $args) = split /\s+/, "$acmd $args", 2;
+			$args = "" unless defined $args;
+			dbg("aliased cmd: $cmd $args") if isdbg('command');
+		}
+			
+		# first expand out the entry to a command
+		($path, $fcmd) = search($main::localcmd, $cmd, "pl");
+		($path, $fcmd) = search($main::cmd, $cmd, "pl") if !$path || !$fcmd;
+
+		if ($path && $cmd) {
+			dbg("path: $cmd cmd: $fcmd") if isdbg('command');
+			
+			my $package = find_cmd_name($path, $fcmd);
+			return ($@) if $@;
+				
+			if ($package) {
+				no strict 'refs';
+				dbg("package: $package") if isdbg('command');
+				eval { @ans = &$package($self, $args) };
+				return (DXDebug::shortmess($@)) if $@;
+			}
+		} else {
+			dbg("cmd: $cmd not found") if isdbg('command');
+			if (++$self->{errors} > $maxerrors) {
+				$self->send($self->msg('e26'));
+				$self->disconnect;
+				return ();
+			} else {
+				return ($self->msg('e1'));
+			}
+		}
+	}
+	
+	my $ok = shift @ans;
+	if ($ok) {
+		delete $self->{errors};
+	} else {
+		if (++$self->{errors} > $maxerrors) {
+			$self->send($self->msg('e26'));
+			$self->disconnect;
+			return ();
+		}
+	}
+	return (@ans);
 }
 
 #
@@ -122,41 +450,60 @@ sub normal
 #
 sub process
 {
-  my $t = time;
-  my @chan = DXChannel->get_all();
-  my $chan;
-  
-  foreach $chan (@chan) {
-    next if $chan->sort ne 'U';  
-
-    # send a prompt if no activity out on this channel
-    if ($t >= $chan->t + $main::user_interval) {
-      $chan->prompt() if $chan->{state} =~ /^prompt/o;
-	  $chan->t($t);
+	my $t = time;
+	my @dxchan = DXChannel->get_all();
+	my $dxchan;
+	
+	foreach $dxchan (@dxchan) {
+		next if $dxchan->sort ne 'U';  
+		
+		# send a prompt if no activity out on this channel
+		if ($t >= $dxchan->t + $main::user_interval) {
+			$dxchan->prompt() if $dxchan->{state} =~ /^prompt/o;
+			$dxchan->t($t);
+		}
+	}
+
+	while (my ($k, $v) = each %nothereslug) {
+		if ($main::systime >= $v + 300) {
+			delete $nothereslug{$k};
+		}
 	}
-  }
 }
 
 #
 # finish up a user context
 #
-sub finish
+sub disconnect
 {
-  my $self = shift;
-  my $call = $self->call;
-
-  if ($call eq $main::myalias) {   # unset the channel if it is us really
-    my $node = DXNode->get($main::mycall);
-	$node->{dxchan} = 0;
-  }
-  my $ref = DXNodeuser->get($call);
-
-  # issue a pc17 to everybody interested
-  my $nchan = DXChannel->get($main::mycall);
-  my $pc17 = $nchan->pc17($self);
-  DXProt::broadcast_ak1a($pc17);
-  
-  $ref->del() if $ref;
+	my $self = shift;
+	my $call = $self->call;
+
+	return if $self->{disconnecting}++;
+
+	delete $self->{senddbg};
+
+	my $uref = Route::User::get($call);
+	my @rout;
+	if ($uref) {
+		@rout = $main::routeroot->del_user($uref);
+		dbg("B/C PC17 on $main::mycall for: $call") if isdbg('route');
+	} else {
+		confess "trying to disconnect a non existant user $call";
+	}
+
+	# issue a pc17 to everybody interested
+	DXProt::route_pc17($main::me, $main::routeroot, @rout) if @rout;
+
+	# I was the last node visited
+    $self->user->node($main::mycall);
+		
+	# send info to all logged in thingies
+	$self->tell_login('logoutu');
+
+	Log('DXCommand', "$call disconnected");
+
+	$self->SUPER::disconnect;
 }
 
 #
@@ -165,39 +512,35 @@ sub finish
 
 sub prompt
 {
-  my $self = shift;
-  my $call = $self->{call};
-  DXChannel::msg($self, 'pr', $call);
+	my $self = shift;
+	$self->send($self->msg($self->here ? 'pr' : 'pr2', $self->call, cldate($main::systime), ztime($main::systime)));
 }
 
 # broadcast a message to all users [except those mentioned after buffer]
 sub broadcast
 {
-  my $pkg = shift;                # ignored
-  my $s = shift;                  # the line to be rebroadcast
-  my @except = @_;                # to all channels EXCEPT these (dxchannel refs)
-  my @list = DXChannel->get_all();   # just in case we are called from some funny object
-  my ($chan, $except);
-  
-L: foreach $chan (@list) {
-     next if !$chan->sort eq 'U';  # only interested in user channels  
-	 foreach $except (@except) {
-	   next L if $except == $chan;  # ignore channels in the 'except' list
-	 }
-	 chan->send($s);              # send it
-  }
+	my $pkg = shift;			# ignored
+	my $s = shift;				# the line to be rebroadcast
+	
+    foreach my $dxchan (DXChannel->get_all()) {
+		next unless $dxchan->{sort} eq 'U'; # only interested in user channels  
+		next if grep $dxchan == $_, @_;
+		$dxchan->send($s);			# send it
+	}
 }
 
 # gimme all the users
 sub get_all
 {
-  my @list = DXChannel->get_all();
-  my $ref;
-  my @out;
-  foreach $ref (@list) {
-    push @out, $ref if $ref->sort eq 'U';
-  }
-  return @out;
+	return grep {$_->{sort} eq 'U'} DXChannel->get_all();
+}
+
+# run a script for this user
+sub run_script
+{
+	my $self = shift;
+	my $silent = shift || 0;
+	
 }
 
 #
@@ -206,61 +549,75 @@ sub get_all
 
 sub search
 {
-  my ($path, $short_cmd, $suffix) = @_;
-  my ($apath, $acmd);
-
-  # commands are lower case
-  $short_cmd = lc $short_cmd;
-  dbg('command', "command: $path $short_cmd\n");
-  
-  # return immediately if we have it
-  my ($apath, $acmd) = split ',', $cmd_cache{$short_cmd};
-  if ($apath && $acmd) {
-    dbg('command', "cached $short_cmd = ($apath, $acmd)\n");
-    return ($apath, $acmd) if $apath;
-  }
-  
-  # if not guess
-  my @parts = split '/', $short_cmd;
-  my $dirfn;
-  my $curdir = $path;
-  my $p;
-  my $i;
-  
-  for ($i = 0; $i < @parts; $i++) {
-    my  $p = $parts[$i];
-	opendir(D, $curdir) or confess "can't open $curdir $!";
-	my @ls = readdir D;
-	closedir D;
-	my $l;
-	foreach $l (sort @ls) {
-	  next if $l =~ /^\./;
-      if ($i < $#parts) {            # we are dealing with directories
-        if ((-d "$curdir/$l") && $p eq substr($l, 0, length $p)) {
-		  dbg('command', "got dir: $curdir/$l\n");
-		  $dirfn .= "$l/";
-		  $curdir .= "/$l";
-		  last;
-		}
-      } else {                       # we are dealing with commands
-		next if !$l =~ /\.$suffix$/;       # only look for .$suffix files
-		if ($p eq substr($l, 0, length $p)) {
-		  $l =~ s/\.$suffix$//;      # remove the suffix
-		  chop $dirfn;               # remove trailing /
-		  $cmd_cache{"$short_cmd"} = join(',', ($path, "$dirfn/$l"));   # cache it
-          dbg('command', "got path: $path cmd: $dirfn/$l\n");
-		  return ($path, "$dirfn/$l"); 
+	my ($path, $short_cmd, $suffix) = @_;
+	my ($apath, $acmd);
+	
+	# commands are lower case
+	$short_cmd = lc $short_cmd;
+	dbg("command: $path $short_cmd\n") if isdbg('command');
+
+	# do some checking for funny characters
+	return () if $short_cmd =~ /\/$/;
+
+	# return immediately if we have it
+	($apath, $acmd) = split ',', $cmd_cache{$short_cmd} if $cmd_cache{$short_cmd};
+	if ($apath && $acmd) {
+		dbg("cached $short_cmd = ($apath, $acmd)\n") if isdbg('command');
+		return ($apath, $acmd);
+	}
+	
+	# if not guess
+	my @parts = split '/', $short_cmd;
+	my $dirfn;
+	my $curdir = $path;
+	my $p;
+	my $i;
+	my @lparts;
+	
+	for ($i = 0; $i < @parts; $i++) {
+		my  $p = $parts[$i];
+		opendir(D, $curdir) or confess "can't open $curdir $!";
+		my @ls = readdir D;
+		closedir D;
+		my $l;
+		foreach $l (sort @ls) {
+			next if $l =~ /^\./;
+			if ($i < $#parts) {            	# we are dealing with directories
+				if ((-d "$curdir/$l") && $p eq substr($l, 0, length $p)) {
+					dbg("got dir: $curdir/$l\n") if isdbg('command');
+					$dirfn .= "$l/";
+					$curdir .= "/$l";
+					last;
+				}
+			} else {			# we are dealing with commands
+				@lparts = split /\./, $l;                  
+				next if $lparts[$#lparts] ne $suffix;        # only look for .$suffix files
+				if ($p eq substr($l, 0, length $p)) {
+					pop @lparts; #  remove the suffix
+					$l = join '.', @lparts;
+					#		  chop $dirfn;               # remove trailing /
+					$dirfn = "" unless $dirfn;
+					$cmd_cache{$short_cmd} = join(',', ($path, "$dirfn$l")); # cache it
+					dbg("got path: $path cmd: $dirfn$l\n") if isdbg('command');
+					return ($path, "$dirfn$l"); 
+				}
+			}
 		}
-	  }
 	}
-  }
-  return ();  
+	return ();  
 }  
 
 # clear the command name cache
 sub clear_cmd_cache
 {
-  %cmd_cache = ();
+	no strict 'refs';
+	
+	for (keys %Cache) {
+		undef *{$_};
+		dbg("Undefining cmd $_") if isdbg('command');
+	}
+	%cmd_cache = ();
+	%Cache = ();
 }
 
 #
@@ -275,93 +632,208 @@ sub clear_cmd_cache
 #require Devel::Symdump;  
 
 sub valid_package_name {
-  my($string) = @_;
-  $string =~ s/([^A-Za-z0-9\/])/sprintf("_%2x",unpack("C",$1))/eg;
-  
-  #second pass only for words starting with a digit
-  $string =~ s|/(\d)|sprintf("/_%2x",unpack("C",$1))|eg;
+	my($string) = @_;
+	$string =~ s|([^A-Za-z0-9_/])|sprintf("_%2x",unpack("C",$1))|eg;
 	
-  #Dress it up as a real package name
-  $string =~ s|/|_|g;
-  return "Emb_" . $string;
+	$string =~ s|/|_|g;
+	return "cmd_$string";
 }
 
-#borrowed from Safe.pm
-sub delete_package {
-  my $pkg = shift;
-  my ($stem, $leaf);
+# 
+# this bit of magic finds a command in the offered directory
+sub find_cmd_name {
+	my $path = shift;
+	my $cmdname = shift;
+	my $package = valid_package_name($cmdname);
+	my $filename = "$path/$cmdname.pl";
+	my $mtime = -M $filename;
 	
-  no strict 'refs';
-  $pkg = "DXChannel::$pkg\::";    # expand to full symbol table name
-  ($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
+	# return if we can't find it
+	$errstr = undef;
+	unless (defined $mtime) {
+		$errstr = DXM::msg('e1');
+		return undef;
+	}
 	
-  my $stem_symtab = *{$stem}{HASH};
+	if(defined $Cache{$package}->{mtime} &&$Cache{$package}->{mtime} <= $mtime) {
+		#we have compiled this subroutine already,
+		#it has not been updated on disk, nothing left to do
+		#print STDERR "already compiled $package->handler\n";
+		;
+	} else {
+
+		my $sub = readfilestr($filename);
+		unless ($sub) {
+			$errstr = "Syserr: can't open '$filename' $!";
+			return undef;
+		};
+		
+		#wrap the code into a subroutine inside our unique package
+		my $eval = qq( sub $package { $sub } );
+		
+		if (isdbg('eval')) {
+			my @list = split /\n/, $eval;
+			my $line;
+			for (@list) {
+				dbg($_ . "\n") if isdbg('eval');
+			}
+		}
+		
+		# get rid of any existing sub and try to compile the new one
+		no strict 'refs';
+
+		if (exists $Cache{$package}) {
+			dbg("Redefining $package") if isdbg('command');
+			undef *$package;
+		} else {
+			dbg("Defining $package") if isdbg('command');
+		}
+		eval $eval;
+		
+		$Cache{$package} = {mtime => $mtime };
+	    
+	}
+
+	return $package;
+}
+
+sub local_send
+{
+	my ($self, $let, $buf) = @_;
+	if ($self->{state} eq 'prompt' || $self->{state} eq 'talk') {
+		if ($self->{enhanced}) {
+			$self->send_later($let, $buf);
+		} else {
+			$self->send($buf);
+		}
+	} else {
+		$self->delay($buf);
+	}
+}
+
+# send a talk message here
+sub talk
+{
+	my ($self, $from, $to, $via, $line) = @_;
+	$line =~ s/\\5E/\^/g;
+	$self->local_send('T', "$to de $from: $line") if $self->{talk};
+	Log('talk', $to, $from, $main::mycall, $line);
+	# send a 'not here' message if required
+	unless ($self->{here} && $from ne $to) {
+		my $key = "$to$from";
+		unless (exists $nothereslug{$key}) {
+			my ($ref, $dxchan);
+			if (($ref = Route::get($from)) && ($dxchan = $ref->dxchan)) {
+				my $name = $self->user->name || $to;
+				my $s = $self->user->nothere || $dxchan->msg('nothere', $name);
+				$nothereslug{$key} = $main::systime;
+				$dxchan->talk($to, $from, undef, $s);
+			}
+		}
+	}
+}
+
+# send an announce
+sub announce
+{
+	my $self = shift;
+	my $line = shift;
+	my $isolate = shift;
+	my $to = shift;
+	my $target = shift;
+	my $text = shift;
+	my ($filter, $hops);
+
+	if (!$self->{ann_talk} && $to ne $self->{call}) {
+		my $call = AnnTalk::is_talk_candidate($_[0], $text);
+		return if $call;
+	}
+
+	if ($self->{annfilter}) {
+		($filter, $hops) = $self->{annfilter}->it(@_ );
+		return unless $filter;
+	}
+
+	unless ($self->{ann}) {
+		return if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
+	}
+	return if $target eq 'SYSOP' && $self->{priv} < 5;
+	my $buf = "$to$target de $_[0]: $text";
+	$buf =~ s/\%5E/^/g;
+	$buf .= "\a\a" if $self->{beep};
+	$self->local_send($target eq 'WX' ? 'W' : 'N', $buf);
+}
+
+# send a dx spot
+sub dx_spot
+{
+	my $self = shift;
+	my $line = shift;
+	my $isolate = shift;
+	my ($filter, $hops);
+
+	return unless $self->{dx};
 	
-  delete $stem_symtab->{$leaf};
+	if ($self->{spotsfilter}) {
+		($filter, $hops) = $self->{spotsfilter}->it(@_ );
+		return unless $filter;
+	}
+
+	my $buf = Spot::formatb($self->{user}->wantgrid, $_[0], $_[1], $_[2], $_[3], $_[4]);
+	$buf .= "\a\a" if $self->{beep};
+	$buf =~ s/\%5E/^/g;
+	$self->local_send('X', $buf);
 }
 
-sub eval_file {
-  my $self = shift;
-  my $path = shift;
-  my $cmdname = shift;
-  my $package = valid_package_name($cmdname);
-  my $filename = "$path/$cmdname.pl";
-  my $mtime = -M $filename;
-  
-  # return if we can't find it
-  return (0, DXM::msg('e1')) if !defined $mtime;
-  
-  if(defined $Cache{$package}{mtime} && $Cache{$package}{mtime } <= $mtime) {
-    #we have compiled this subroutine already,
-	#it has not been updated on disk, nothing left to do
-	#print STDERR "already compiled $package->handler\n";
-	;
-  } else {
-	local *FH;
-	if (!open FH, $filename) {
-	  return (0, "Syserr: can't open '$filename' $!"); 
-	};
-	local($/) = undef;
-	my $sub = <FH>;
-	close FH;
-		
-    #wrap the code into a subroutine inside our unique package
-	my $eval = qq{package DXChannel; sub $package { $sub; }};
-	if (isdbg('eval')) {
-	  my @list = split /\n/, $eval;
-	  my $line;
-	  foreach (@list) {
-	    dbg('eval', $_, "\n");
-	  }
+sub wwv
+{
+	my $self = shift;
+	my $line = shift;
+	my $isolate = shift;
+	my ($filter, $hops);
+
+	return unless $self->{wwv};
+	
+	if ($self->{wwvfilter}) {
+		($filter, $hops) = $self->{wwvfilter}->it(@_ );
+		return unless $filter;
 	}
-	#print "eval $eval\n";
-	{
-	  #hide our variables within this block
-	  my($filename,$mtime,$package,$sub);
-	  eval $eval;
+
+	my $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
+	$buf .= "\a\a" if $self->{beep};
+	$self->local_send('V', $buf);
+}
+
+sub wcy
+{
+	my $self = shift;
+	my $line = shift;
+	my $isolate = shift;
+	my ($filter, $hops);
+
+	return unless $self->{wcy};
+	
+	if ($self->{wcyfilter}) {
+		($filter, $hops) = $self->{wcyfilter}->it(@_ );
+		return unless $filter;
 	}
-	if ($@) {
-	  delete_package($package);
-	  return (0, "Syserr: Eval err $@ on $package");
+
+	my $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
+	$buf .= "\a\a" if $self->{beep};
+	$self->local_send('Y', $buf);
+}
+
+# broadcast debug stuff to all interested parties
+sub broadcast_debug
+{
+	my $s = shift;				# the line to be rebroadcast
+	
+	foreach my $dxchan (DXChannel->get_all) {
+		next unless $dxchan->{enhanced} && $dxchan->{senddbg};
+		$dxchan->send_later('L', $s);
 	}
-		
-	#cache it unless we're cleaning out each time
-	$Cache{$package}{mtime} = $mtime;
-  }
-  
-  my @r;
-  my $c = qq{ \@r = \$self->$package(\@_); };
-  dbg('eval', "cluster cmd = $c\n");
-  eval  $c;
-  if ($@) {
-    delete_package($package);
-	return (1, "Syserr: Eval err $@ on cached $package");
-  }
-
-  #take a look if you want
-  #print Devel::Symdump->rnew($package)->as_string, $/;
-  return @r;
 }
 
+
 1;
 __END__