1 files changed, 135 insertions, 0 deletions
diff --git a/scripts/mlock.pl b/scripts/mlock.pl
new file mode 100644
index 0000000..bf2fd00
--- /dev/null
+++ b/scripts/mlock.pl
@@ -0,0 +1,135 @@
+# /MLOCK <channel> <mode>
+#
+# Locks the channel mode to <mode>, if someone else tries to change the mode
+# Irssi will automatically change it back. +k and +l are a bit special since
+# they require the parameter. If you omit the parameter, like setting the
+# mode to "+ntlk", Irssi will allow all +k and +l (or -lk) mode changes.
+# You can remove the lock with /MODE #channel -
+
+use Irssi;
+use Irssi::Irc;
+use strict;
+use vars qw($VERSION %IRSSI);
+
+$VERSION = "1.00";
+%IRSSI = (
+    authors     => 'Timo Sirainen',
+    name        => 'mlock',
+    description => 'Channel mode locking',
+    license     => 'Public Domain',
+    changed	=> 'Sun Mar 10 23:18 EET 2002'
+);
+
+my %keep_channels;
+
+sub cmd_mlock {
+	my ($data, $server) = @_;
+	my ($channel, $mode) = split(/ /, $data, 2);
+
+	if ($mode eq "-") {
+		# remove checking
+		delete $keep_channels{$channel};
+	} else {
+		$keep_channels{$channel} = $mode;
+		mlock_check_mode($server, $channel);
+	}
+}
+
+sub mlock_check_mode {
+        my ($server, $channame) = @_;
+
+	my $channel = $server->channel_find($channame);
+	return if (!$channel || !$channel->{chanop});
+
+        my $keep_mode = $keep_channels{$channame};
+	return if (!$keep_mode);
+
+	# old channel mode
+	my ($oldmode, $oldkey, $oldlimit);
+	$oldmode = $channel->{mode};
+        $oldmode =~ s/^([^ ]*).*/\1/;
+	$oldkey = $channel->{key};
+	$oldlimit = $channel->{limit};
+
+	# get the new channel key/limit
+	my (@newmodes, $newkey, $limit);
+	@newmodes = split(/ /, $keep_mode); $keep_mode = $newmodes[0];
+	if ($keep_mode =~ /k/) {
+		if ($keep_mode =~ /k.*l/) {
+                        $newkey = $newmodes[1];
+                        $limit = $newmodes[2];
+		} elsif ($keep_mode =~ /l.*k/) {
+			$limit = $newmodes[1];
+                        $newkey = $newmodes[2];
+		} else {
+                        $newkey = $newmodes[1];
+		}
+	} elsif ($keep_mode =~ /l/) {
+		$limit = $newmodes[1];
+	}
+
+	# check the differences
+	my %allmodes;
+	$keep_mode =~ s/^\+//;
+	for (my $n = 0; $n < length($keep_mode); $n++) {
+		my $modechar = substr($keep_mode, $n, 1);
+		$allmodes{$modechar} = '+';
+	}
+
+	for (my $n = 0; $n < length($oldmode); $n++) {
+		my $modechar = substr($oldmode, $n, 1);
+
+		if ($allmodes{$modechar} eq '+') {
+			next if (($modechar eq "k" && $newkey ne $oldkey) ||
+				 ($modechar eq "l" && $limit != $oldlimit));
+			delete $allmodes{$modechar};
+		} else {
+			$allmodes{$modechar} = '-';
+		}
+	}
+
+	# create the mode change string
+	my ($modecmd, $extracmd);
+	foreach my $mode (keys %allmodes) {
+		Irssi::print("key = '$mode':".$allmodes{$mode});
+		if ($mode eq "k") {
+			if ($allmodes{$mode} eq '+') {
+				next if ($newkey eq "");
+				if ($oldkey ne "") {
+					# we need to get rid of old key too
+					$modecmd .= "-k";
+					$extracmd .= " $oldkey";
+				}
+				$extracmd .= " $newkey";
+			} else {
+				$extracmd .= " $oldkey";
+			}
+		}
+		if ($mode eq "l" && $allmodes{$mode} eq '+') {
+			next if ($limit <= 0);
+                        $extracmd .= " $limit";
+		}
+		$modecmd .= $allmodes{$mode}.$mode;
+	}
+
+	if ($modecmd ne "") {
+		$channel->{server}->command("/mode $channame $modecmd$extracmd");
+	}
+}
+
+sub mlock_mode_changed {
+	my ($server, $data) = @_;
+	my ($channel, $mode) = split(/ /, $data, 2);
+
+	mlock_check_mode($server, $channel);
+}
+
+sub mlock_synced {
+	my $channel = $_[0];
+
+	mlock_check_mode($channel->{server}, $channel->{name});
+}
+
+Irssi::command_bind('mlock', 'cmd_mlock');
+Irssi::signal_add_last("event mode", "mlock_mode_changed");
+Irssi::signal_add("channel synced", "mlock_synced");