Initial Import

1 files changed, 86 insertions, 0 deletions

diff --git a/Echolot/Commands.pm b/Echolot/Commands.pm
new file mode 100644
index 0000000..653ba20
--- /dev/null
+++ b/Echolot/Commands.pm
@@ -0,0 +1,86 @@
+package Echolot::Commands;
+
+# (c) 2002 Peter Palfrader <peter@palfrader.org>
+# $Id: Commands.pm,v 1.1 2002/06/20 04:26:12 weasel Exp $
+#
+
+=pod
+
+=head1 Name
+
+Echolot::Commands - manage commands like add key, set ttl etc.
+
+=head1 DESCRIPTION
+
+This package provides functions for sending out and receiving pings.
+
+=cut
+
+use strict;
+use warnings;
+use Carp qw{cluck};
+use Fcntl ':flock'; # import LOCK_* constants
+use Fcntl ':seek'; # import LOCK_* constants
+use English;
+
+sub addCommand($) {
+	my ($command) = @_;
+
+	my $filename = Echolot::Config::get()->{'commands'};
+	open(FH, ">>$filename" ) or
+		cluck("Cannot open $filename for appending $!"),
+		return 0;
+	flock(FH, LOCK_EX) or
+		cluck("Cannot get exclusive lock on $filename: $!"),
+		return 0;
+	
+	print FH $command,"\n";
+	
+	flock(FH, LOCK_UN) or
+		cluck("Cannot unlock $filename: $!");
+	close(FH) or
+		cluck("Cannot close $filename: $!");
+};
+
+sub processCommands($) {
+	my $filename = Echolot::Config::get()->{'commands'};
+
+	(-e $filename) or
+		return 1;
+	my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size, $atime,$mtime,$ctime,$blksize,$blocks)= stat $filename;
+	($size > 0) or
+		return 1;
+	
+	open(FH, "+<$filename" ) or
+		cluck("Cannot open $filename for reading: $!"),
+		return 0;
+	flock(FH, LOCK_EX) or
+		cluck("Cannot get exclusive lock on $filename: $!"),
+		return 0;
+	
+
+	while (<FH>) {
+		chomp;
+		my ($command, $args) = split;
+
+		if ($command eq 'add') {
+			Echolot::Globals::get()->{'storage'}->add_address($args);
+		} else {
+			warn("Unkown command: $_\n");
+		};
+	};
+
+	seek(FH, 0, SEEK_SET) or
+		cluck("Cannot seek to start $filename $!"),
+		return 0;
+	truncate(FH, 0) or
+		cluck("Cannot truncate $filename to zero length: $!"),
+		return 0;
+	flock(FH, LOCK_UN) or
+		cluck("Cannot unlock $filename: $!");
+	close(FH) or
+		cluck("Cannot close $filename: $!");
+};
+
+1;
+# vim: set ts=4 shiftwidth=4: