From c31e374a71a5109b136327b89b51a34f9bf8809f Mon Sep 17 00:00:00 2001
From: Michael Foster <savetheinternet@tinyboard.org>
Date: Wed, 28 Aug 2013 20:09:30 +1000
Subject: [PATCH] Allow Unix sockets for database connection

---
 inc/config.php   |  8 +++++---
 inc/database.php | 12 ++++++++++--
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/inc/config.php b/inc/config.php
index b6c510a7..5d572010 100644
--- a/inc/config.php
+++ b/inc/config.php
@@ -77,16 +77,18 @@
 	// Database driver (http://www.php.net/manual/en/pdo.drivers.php)
 	// Only MySQL is supported by Tinyboard at the moment, sorry.
 	$config['db']['type'] = 'mysql';
-	// Hostname or IP address
+	// Hostname, IP address or Unix socket (prefixed with ":")
 	$config['db']['server'] = 'localhost';
+	// Example: Unix socket
+	// $config['db']['server'] = ':/tmp/mysql.sock';
 	// Login
 	$config['db']['user'] = '';
 	$config['db']['password'] = '';
 	// Tinyboard database
 	$config['db']['database'] = '';
-	// Table prefix
+	// Table prefix (optional)
 	$config['db']['prefix'] = '';
-	// Use a persistent connection (experimental)
+	// Use a persistent connection (experimental; benefits unknown)
 	$config['db']['persistent'] = false;
 	// Anything more to add to the DSN string (eg. port=xxx;foo=bar)
 	$config['db']['dsn'] = '';
diff --git a/inc/database.php b/inc/database.php
index 24959d0c..8daa20b4 100644
--- a/inc/database.php
+++ b/inc/database.php
@@ -43,9 +43,17 @@ class PreparedQueryDebug {
 
 function sql_open() {
 	global $pdo, $config;
-	if ($pdo) return true;
+	if ($pdo)
+		return true;
 	
-	$dsn = $config['db']['type'] . ':host=' . $config['db']['server'] . ';dbname=' . $config['db']['database'];
+	if (isset($config['db']['server'][0]) && $config['db']['server'][0] == ':')
+		$unix_socket = substr($config['db']['server'], 1);
+	else
+		$unix_socket = false;
+	
+	$dsn = $config['db']['type'] . ':' .
+		($unix_socket ? 'unix_socket=' . $unix_socket : 'host=' . $config['db']['server']) .
+		';dbname=' . $config['db']['database'];
 	if (!empty($config['db']['dsn']))
 		$dsn .= ';' . $config['db']['dsn'];
 	try {