--- bin/tftpd.pl	2009/07/27 22:25:06	13
+++ bin/tftpd.pl	2009/07/28 21:03:29	24
@@ -5,16 +5,17 @@
 
 die "need to run $0 as root like this\nsudo $0\n" unless $< == 0;
 
-# change ROOTDIR to your TFTP root directory
-my $rootdir = 'conf/' . readlink('conf/tftp.dir');
-$rootdir =~ s{[^/]+/\.\./([^/]+)}{$1};
-
-unless(-d $rootdir)
-{
-	print "$rootdir isn't directory!\nUsage: $0 path/to/rootdir\n\n";
-	exit 1;
+our $tftp_dir;
+sub tftp_dir {
+	require 'config.pl';
+	warn "# config: ", readlink 'config.pl', " tftp_dir: $tftp_dir\n";
+	return $tftp_dir;
 }
 
+tftp_dir;
+
+die "no $tftp_dir\n" unless -e $tftp_dir;
+
 # callback sub used to print transfer status
 sub callback
 {
@@ -35,7 +36,7 @@
 
 # create the listener
 my $listener = Net::TFTPd->new(
-	'RootDir' => $rootdir,
+	'RootDir' => $tftp_dir,
 	'Writable' => 0,
 	'Timeout' => 3600, 
 	'CallBack' => \&callback,
@@ -45,12 +46,20 @@
 	BlkSize => 1456,	# IBM GE seems to be picky
 	Debug => 99,
 ) or die Net::TFTPd->error;
-printf "TFTP %s:%d [timeout %d s] $rootdir\n", $listener->{'LocalAddr'} ? $listener->{'LocalAddr'} : "'any address'",  $listener->{'LocalPort'}, $listener->{'Timeout'};
+printf "TFTP on %s:%d timeout: %d dir: $tftp_dir\n", $listener->{'LocalAddr'} ? $listener->{'LocalAddr'} : "'any address'",  $listener->{'LocalPort'}, $listener->{'Timeout'};
 
 while(1) {
 
 	# wait for any request (RRQ or WRQ)
 	if(my $request = $listener->waitRQ()) {
+
+		$tftp_dir = tftp_dir;
+
+		if ( $request->{RootDir} ne $tftp_dir ) {
+			$request->{RootDir} = $tftp_dir;
+			warn "new root: $tftp_dir\n";
+		}
+
 		# received request
 		printf "Received a %s for file '%s'\n", $OPCODES{$request->{'_REQUEST_'}{'OPCODE'}}, $request->{'_REQUEST_'}{'FileName'};