===================================================================
RCS file: /cvs/openbsd/OpenBSDTorrents/lib/BT/MetaInfo/Cached.pm,v
retrieving revision 1.10
retrieving revision 1.11
diff -u -r1.10 -r1.11
--- openbsd/OpenBSDTorrents/lib/BT/MetaInfo/Cached.pm	2005/05/20 19:37:28	1.10
+++ openbsd/OpenBSDTorrents/lib/BT/MetaInfo/Cached.pm	2005/05/21 01:05:13	1.11
@@ -1,4 +1,4 @@
-# $Id: Cached.pm,v 1.10 2005/05/20 18:37:28 andrew Exp $
+# $Id: Cached.pm,v 1.11 2005/05/21 00:05:13 andrew Exp $
 use strict;
 
 package BT::MetaInfo::Cached;
@@ -8,11 +8,12 @@
 
 use Cache::FileCache;
 use File::Basename;
+use Digest::MD5;
 
 use BT::MetaInfo;
 use base 'BT::MetaInfo';
 
-$VERSION = do { my @r = (q$Id: Cached.pm,v 1.10 2005/05/20 18:37:28 andrew Exp $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
+$VERSION = do { my @r = (q$Id: Cached.pm,v 1.11 2005/05/21 00:05:13 andrew Exp $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
 
 sub new
 {
@@ -48,10 +49,24 @@
 	
 	my $info = $cache->get( $basename );
 
+	my $md5;
+	if (defined $info && $info->{'md5'}) {
+		my $old_md5 = delete $info->{'md5'};
+		my $cur_md5 = _MD5_file($file);
+		if ($old_md5 ne $cur_md5) {
+			$cache->remove( $basename );
+			$info = undef;
+		}
+		$md5 = $cur_md5;
+	}
+
 	unless (defined $info) {
 		$info = BT::MetaInfo::_load($file);
+		$info->{'md5'} = $md5;
 		$cache->set( $basename, $info );
+		delete $info->{'md5'};
 	}
+
 	return $info;
 }
 
@@ -62,12 +77,29 @@
 	my $file = shift;
 	my $basename = basename($file);
 
-	my $cache = delete $self->{cache};
+	my $cache   = delete $self->{'cache'};
 
 	if ( $self->SUPER::save($file, @_) ) {
 		my %info_hash = %$self; # unbless
+
+		$info_hash{'md5'} = _MD5_file($file);
 		$cache->set($basename, \%info_hash)
 	}
 
-	$self->{cache} = $cache;
+	$self->{'cache'} = $cache;
+
+	return 1;
+}
+
+sub _MD5_file
+{
+	my $file = shift;
+
+	my $ctx = Digest::MD5->new;
+	open my $fh, $file or die "Couldn't open FILE '$file': $!";
+	binmode $fh;
+	$ctx->addfile($fh);
+	close $fh;
+
+	return $ctx->hexdigest;
 }