[feature/sphinx-fulltext-search] makes sql host configurable

The SQL server host which sphinx connects to index the posts is now
configurable via ACP.

PHPBB3-10946

phpBB/docs/sphinx.sample.conf

@@ -1,7 +1,7 @@
 source source_phpbb_{SPHINX_ID}_main
 {
-	type = mysql
+	type = mysql #mysql or pgsql
-	sql_host = localhost
+	sql_host = localhost #SQL server host sphinx connects to
 	sql_user = username
 	sql_pass = password
 	sql_db = db_name

phpBB/includes/search/fulltext_sphinx.php

@@ -162,11 +162,11 @@ class phpbb_search_fulltext_sphinx
 		$config_data = array(
 			'source source_phpbb_' . $this->id . '_main' => array(
 				array('type',						$this->dbtype),
-				array('sql_host',					$dbhost),
+				array('sql_host',					$this->config['fulltext_sphinx_host'] ? $this->config['fulltext_sphinx_host'] : $dbhost),
 				array('sql_user',					$dbuser),
 				array('sql_pass',					$dbpasswd),
 				array('sql_db',						$dbname),
-				array('sql_port',					$dbport),
+				array('sql_port',					$this->config['fulltext_sphinx_port']),
 				array('sql_query_pre',				'SET NAMES \'utf8\''),
 				array('sql_query_pre',				'UPDATE ' . SPHINX_TABLE . ' SET max_doc_id = (SELECT MAX(post_id) FROM ' . POSTS_TABLE . ') WHERE counter_id = 1'),
 				array('sql_query_range',			'SELECT MIN(post_id), MAX(post_id) FROM ' . POSTS_TABLE . ''),
@@ -759,6 +759,7 @@ class phpbb_search_fulltext_sphinx
 		$config_vars = array(
 			'fulltext_sphinx_config_path' => 'string',
 			'fulltext_sphinx_data_path' => 'string',
+			'fulltext_sphinx_host' => 'string',
 			'fulltext_sphinx_port' => 'int',
 			'fulltext_sphinx_stopwords'	=> 'bool',
 			'fulltext_sphinx_indexer_mem_limit' => 'int',
@@ -778,6 +779,10 @@ class phpbb_search_fulltext_sphinx
 			<dt><label for="fulltext_sphinx_stopwords">' . $this->user->lang['FULLTEXT_SPHINX_STOPWORDS_FILE'] . ':</label><br /><span>' . $this->user->lang['FULLTEXT_SPHINX_STOPWORDS_FILE_EXPLAIN'] . '</span></dt>
 			<dd><label><input type="radio" id="fulltext_sphinx_stopwords" name="config[fulltext_sphinx_stopwords]" value="1"' . (($this->config['fulltext_sphinx_stopwords']) ? ' checked="checked"' : '') . ' class="radio" /> ' . $this->user->lang['YES'] . '</label><label><input type="radio" name="config[fulltext_sphinx_stopwords]" value="0"' . ((!$this->config['fulltext_sphinx_stopwords']) ? ' checked="checked"' : '') . ' class="radio" /> ' . $this->user->lang['NO'] . '</label></dd>
 		</dl>
+		<dl>
+			<dt><label for="fulltext_sphinx_host">' . $this->user->lang['FULLTEXT_SPHINX_HOST'] . ':</label><br /><span>' . $this->user->lang['FULLTEXT_SPHINX_HOST_EXPLAIN'] . '</span></dt>
+			<dd><input id="fulltext_sphinx_host" type="text" size="40" maxlength="255" name="config[fulltext_sphinx_host]" value="' . $this->config['fulltext_sphinx_host'] . '" /></dd>
+		</dl>
 		<dl>
 			<dt><label for="fulltext_sphinx_port">' . $this->user->lang['FULLTEXT_SPHINX_PORT'] . ':</label><br /><span>' . $this->user->lang['FULLTEXT_SPHINX_PORT_EXPLAIN'] . '</span></dt>
 			<dd><input id="fulltext_sphinx_port" type="text" size="4" maxlength="10" name="config[fulltext_sphinx_port]" value="' . $this->config['fulltext_sphinx_port'] . '" /></dd>

phpBB/language/en/acp/search.php

@@ -75,6 +75,8 @@ $lang = array_merge($lang, array(
 	'FULLTEXT_SPHINX_DATA_PATH'				=> 'Path to data directory',
 	'FULLTEXT_SPHINX_DATA_PATH_EXPLAIN'		=> 'It will be used to store the indexes and log files. You should create this directory outside the web accessable directories.',
 	'FULLTEXT_SPHINX_DELTA_POSTS'			=> 'Number of posts in frequently updated delta index',
+	'FULLTEXT_SPHINX_HOST'					=> 'SQL server host',
+	'FULLTEXT_SPHINX_HOST_EXPLAIN'			=> 'SQL server host, which the sphinx search daemon (searchd) connects to. Leave empty to use the default SQL server host',
 	'FULLTEXT_SPHINX_INDEXER_MEM_LIMIT'		=> 'Indexer memory limit',
 	'FULLTEXT_SPHINX_INDEXER_MEM_LIMIT_EXPLAIN'	=> 'This number should at all times be lower than the RAM available on your machine. If you experience periodic performance problems this might be due to the indexer consuming too many resources. It might help to lower the amount of memory available to the indexer.',
 	'FULLTEXT_SPHINX_MAIN_POSTS'			=> 'Number of posts in main index',