From 03929dac2a29664878d2c971648a4fe1fb698462 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Mon, 15 Apr 2024 22:19:02 +0200
Subject: Adding upstream version 20231031.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 scripts/nocollide.pl | 118 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 scripts/nocollide.pl

(limited to 'scripts/nocollide.pl')

diff --git a/scripts/nocollide.pl b/scripts/nocollide.pl
new file mode 100644
index 0000000..d2f8177
--- /dev/null
+++ b/scripts/nocollide.pl
@@ -0,0 +1,118 @@
+#
+# This script will change your nickname if in given time (/SET collision_time [seconds])
+# there are more than specific number of collisions (/SET collision_count [number]) on
+# single channel. After change next nick collisions are ignored for given time
+# (/SET collsion_ignore [seconds]).
+# Settings:
+#		/SET collision_avoid [On/Off] (default is on, if off - action disabled)
+#		/SET collision_count [number]
+#		/SET collision_time [seconds]
+#		/SET collision_ignore [seconds]
+#		/SET collision_baselen [0-6]
+
+use strict;
+use Irssi;
+use Irssi::Irc;
+
+use vars qw($VERSION %IRSSI);
+$VERSION = "0.2.3";
+%IRSSI = (
+	'authors'		=> 'Marcin Rozycki',
+	'contact'		=> 'derwan@irssi.pl',
+	'name'			=> 'nocollide',
+	'description'		=> 'Automatically changes nick (to randnick or uid on ircd 2.11) when certain amount of nick colissions'.
+	                           'takes place on channel',
+	'url'			=> 'http://derwan.irssi.pl',
+	'license'		=> 'GNU GPL v2',
+	'changed'		=> 'Mon Feb 16 10:08:59 CET 2004',
+);
+
+my $default_time = 5;
+my $default_count = 2;
+my $default_ignore = 10;
+my $default_baselen = 5;
+
+Irssi::settings_add_bool('misc', 'collision_avoid', 1);
+Irssi::settings_add_int('misc', 'collision_time', $default_time);
+Irssi::settings_add_int('misc', 'collision_count', $default_count);
+Irssi::settings_add_int('misc', 'collision_ignore', $default_ignore);
+Irssi::settings_add_int('misc', 'collision_baselen', $default_baselen);
+
+my %collision = ();
+my %collision_changed = ();
+
+sub sig_message_quit {
+	my ($server, $nick, $null, $quit_msg) = @_;
+
+	# based on cras'es kills.pl
+	return if ($quit_msg !~ /^Killed \(([^ ]*) \((.*)\)\)$/ or !$server or !$server->{connected} or
+			!$nick or !Irssi::settings_get_bool('collision_avoid'));
+
+	my $time = time(); my $tag = lc($server->{tag}); my $change = 0;
+
+	my $check_time = Irssi::settings_get_int('collision_time');
+	$check_time = $default_time if (!$check_time or $check_time !~ /^\d+$/);
+
+	my $check_count = Irssi::settings_get_int('collision_count');
+	$check_count = $default_count if (!$check_count or $check_count !~ /^\d+$/);
+	$check_count = 10 if (--$check_count > 10);
+
+	my $ignore = Irssi::settings_get_int('collision_ignore');
+	$ignore = $default_ignore if (!$ignore or $ignore !~ /^\d+$/);
+
+	my $version = $server->{version};
+	$version = 0 unless ( defined $version );
+	
+	my @list = $server->nicks_get_same($nick);
+	while (my $channel = shift(@list)) {
+		shift(@list);
+
+		my $chan = lc($channel->{name});
+		unshift @{$collision{$tag}{$chan}}, $time; $#{$collision{$tag}{$chan}} = 10;
+		next if ( $server->{nick} =~ m/^\d/ );
+		
+		next unless ($check_count > 0 and $check_time > 0);
+
+		my $test = $collision{$tag}{$chan}[$check_count];
+		if ($test and $test >= ($time - $check_time)) {
+			my $last = $collision_changed{$tag};
+			next if ($last and ($time - $last) < $ignore);
+			
+			$collision_changed{$tag} = $time;
+			delete $collision{$tag}{$chan};
+			next if ($change++);
+
+			if ( $version =~ m/^2.11/ ) {
+				$channel->print("%RNick collision alert%n in %_".$channel->{name}."%_ \(rate ".($check_count + 1)."\:$check_time\). Changing nick to %_uid%_!", MSGLEVEL_CLIENTCRAP);
+				$server->send_raw('NICK 0');
+				next;
+			}
+			
+			my $len = Irssi::settings_get_int('collision_baselen');
+			$len = 6 if ($len > 6);
+			my $nick = randnick(substr($server->{nick}, 0, $len));
+			$channel->print("%RNick collision alert%n in %_".$channel->{name}."%_ \(rate ".($check_count + 1)."\:$check_time\). Changing nick to \'%_$nick%_\'", MSGLEVEL_CLIENTCRAP);
+			$server->command("NICK $nick");
+		}
+	}
+}
+
+# str randnick($prefix, $nicklen);
+# returns random nickname
+sub randnick {
+	my ($base, $length) = @_;
+	$length = 9 if (!$length or $length !~ /^\d+$/);
+
+	# based on fahren's void.scr for LiCe
+	my $chars = 'aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ_-0123456789';
+	my $cchars = (length($base)) ? 64 : 53;
+
+	while (length($base) < $length)
+	{
+		$base .= substr($chars, int(rand($cchars)), 1);
+		$cchars = 64 if ($cchars == 53);
+	}
+	return $base;
+}
+
+Irssi::signal_add_first('message quit', 'sig_message_quit');
-- 
cgit v1.2.3