<?php
|
|
/**
|
+-----------------------------------------------------------------------+
|
| This file is part of the Roundcube Webmail client |
|
| Copyright (C) 2005-2012, The Roundcube Dev Team |
|
| |
|
| Licensed under the GNU General Public License version 3 or |
|
| any later version with exceptions for skins & plugins. |
|
| See the README file for a full license statement. |
|
| |
|
| PURPOSE: |
|
| Database wrapper class that implements PHP PDO functions |
|
+-----------------------------------------------------------------------+
|
| Author: Aleksander Machniak <alec@alec.pl> |
|
+-----------------------------------------------------------------------+
|
*/
|
|
/**
|
* Database independent query interface.
|
* This is a wrapper for the PHP PDO.
|
*
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* @package Framework
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* @subpackage Database
|
*/
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class rcube_db
|
{
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public $db_provider;
|
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protected $db_dsnw; // DSN for write operations
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protected $db_dsnr; // DSN for read operations
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protected $db_connected = false; // Already connected ?
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protected $db_mode; // Connection mode
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protected $dbh; // Connection handle
|
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protected $db_error = false;
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protected $db_error_msg = '';
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protected $conn_failure = false;
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protected $db_index = 0;
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protected $last_result;
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protected $tables;
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protected $variables;
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protected $options = array(
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// column/table quotes
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'identifier_start' => '"',
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'identifier_end' => '"',
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);
|
|
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/**
|
* Factory, returns driver-specific instance of the class
|
*
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* @param string $db_dsnw DSN for read/write operations
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* @param string $db_dsnr Optional DSN for read only operations
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* @param bool $pconn Enables persistent connections
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*
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* @return rcube_db Object instance
|
*/
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public static function factory($db_dsnw, $db_dsnr = '', $pconn = false)
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{
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$driver = strtolower(substr($db_dsnw, 0, strpos($db_dsnw, ':')));
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$driver_map = array(
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'sqlite2' => 'sqlite',
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'sybase' => 'mssql',
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'dblib' => 'mssql',
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'mysqli' => 'mysql',
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);
|
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$driver = isset($driver_map[$driver]) ? $driver_map[$driver] : $driver;
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$class = "rcube_db_$driver";
|
|
if (!$driver || !class_exists($class)) {
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rcube::raise_error(array('code' => 600, 'type' => 'db',
|
'line' => __LINE__, 'file' => __FILE__,
|
'message' => "Configuration error. Unsupported database driver: $driver"),
|
true, true);
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}
|
|
return new $class($db_dsnw, $db_dsnr, $pconn);
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}
|
|
/**
|
* Object constructor
|
*
|
* @param string $db_dsnw DSN for read/write operations
|
* @param string $db_dsnr Optional DSN for read only operations
|
* @param bool $pconn Enables persistent connections
|
*/
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public function __construct($db_dsnw, $db_dsnr = '', $pconn = false)
|
{
|
if (empty($db_dsnr)) {
|
$db_dsnr = $db_dsnw;
|
}
|
|
$this->db_dsnw = $db_dsnw;
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$this->db_dsnr = $db_dsnr;
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$this->db_pconn = $pconn;
|
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$this->db_dsnw_array = self::parse_dsn($db_dsnw);
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$this->db_dsnr_array = self::parse_dsn($db_dsnr);
|
|
// Initialize driver class
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$this->init();
|
}
|
|
/**
|
* Initialization of the object with driver specific code
|
*/
|
protected function init()
|
{
|
// To be used by driver classes
|
}
|
|
/**
|
* Connect to specific database
|
*
|
* @param array $dsn DSN for DB connections
|
*
|
* @return PDO database handle
|
*/
|
protected function dsn_connect($dsn)
|
{
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$this->db_error = false;
|
$this->db_error_msg = null;
|
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// Get database specific connection options
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$dsn_string = $this->dsn_string($dsn);
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$dsn_options = $this->dsn_options($dsn);
|
|
if ($db_pconn) {
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$dsn_options[PDO::ATTR_PERSISTENT] = true;
|
}
|
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// Connect
|
try {
|
// with this check we skip fatal error on PDO object creation
|
if (!class_exists('PDO', false)) {
|
throw new Exception('PDO extension not loaded. See http://php.net/manual/en/intro.pdo.php');
|
}
|
|
$this->conn_prepare($dsn);
|
|
$dbh = new PDO($dsn_string, $dsn['username'], $dsn['password'], $dsn_options);
|
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// don't throw exceptions or warnings
|
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT);
|
}
|
catch (Exception $e) {
|
$this->db_error = true;
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$this->db_error_msg = $e->getMessage();
|
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rcube::raise_error(array('code' => 500, 'type' => 'db',
|
'line' => __LINE__, 'file' => __FILE__,
|
'message' => $this->db_error_msg), true, false);
|
|
return null;
|
}
|
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$this->conn_configure($dsn, $dbh);
|
|
return $dbh;
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}
|
|
/**
|
* Driver-specific preparation of database connection
|
*
|
* @param array $dsn DSN for DB connections
|
*/
|
protected function conn_prepare($dsn)
|
{
|
}
|
|
/**
|
* Driver-specific configuration of database connection
|
*
|
* @param array $dsn DSN for DB connections
|
* @param PDO $dbh Connection handler
|
*/
|
protected function conn_configure($dsn, $dbh)
|
{
|
}
|
|
/**
|
* Driver-specific database character set setting
|
*
|
* @param string $charset Character set name
|
*/
|
protected function set_charset($charset)
|
{
|
$this->query("SET NAMES 'utf8'");
|
}
|
|
/**
|
* Connect to appropriate database depending on the operation
|
*
|
* @param string $mode Connection mode (r|w)
|
*/
|
public function db_connect($mode)
|
{
|
// previous connection failed, don't attempt to connect again
|
if ($this->conn_failure) {
|
return;
|
}
|
|
// no replication
|
if ($this->db_dsnw == $this->db_dsnr) {
|
$mode = 'w';
|
}
|
|
// Already connected
|
if ($this->db_connected) {
|
// connected to db with the same or "higher" mode
|
if ($this->db_mode == 'w' || $this->db_mode == $mode) {
|
return;
|
}
|
}
|
|
$dsn = ($mode == 'r') ? $this->db_dsnr_array : $this->db_dsnw_array;
|
|
$this->dbh = $this->dsn_connect($dsn);
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$this->db_connected = is_object($this->dbh);
|
|
// use write-master when read-only fails
|
if (!$this->db_connected && $mode == 'r' && $this->is_replicated()) {
|
$mode = 'w';
|
$this->dbh = $this->dsn_connect($this->db_dsnw_array);
|
$this->db_connected = is_object($this->dbh);
|
}
|
|
if ($this->db_connected) {
|
$this->db_mode = $mode;
|
$this->set_charset('utf8');
|
}
|
else {
|
$this->conn_failure = true;
|
}
|
}
|
|
/**
|
* Activate/deactivate debug mode
|
*
|
* @param boolean $dbg True if SQL queries should be logged
|
*/
|
public function set_debug($dbg = true)
|
{
|
$this->options['debug_mode'] = $dbg;
|
}
|
|
/**
|
* Writes debug information/query to 'sql' log file
|
*
|
* @param string $query SQL query
|
*/
|
protected function debug($query)
|
{
|
if ($this->options['debug_mode']) {
|
rcube::write_log('sql', '[' . (++$this->db_index) . '] ' . $query . ';');
|
}
|
}
|
|
/**
|
* Getter for error state
|
*
|
* @param mixed $result Optional query result
|
*
|
* @return string Error message
|
*/
|
public function is_error($result = null)
|
{
|
if ($result !== null) {
|
return $result === false ? $this->db_error_msg : null;
|
}
|
|
return $this->db_error ? $this->db_error_msg : null;
|
}
|
|
/**
|
* Connection state checker
|
*
|
* @return boolean True if in connected state
|
*/
|
public function is_connected()
|
{
|
return !is_object($this->dbh) ? false : $this->db_connected;
|
}
|
|
/**
|
* Is database replication configured?
|
*
|
* @return bool Returns true if dsnw != dsnr
|
*/
|
public function is_replicated()
|
{
|
return !empty($this->db_dsnr) && $this->db_dsnw != $this->db_dsnr;
|
}
|
|
/**
|
* Get database runtime variables
|
*
|
* @param string $varname Variable name
|
* @param mixed $default Default value if variable is not set
|
*
|
* @return mixed Variable value or default
|
*/
|
public function get_variable($varname, $default = null)
|
{
|
// to be implemented by driver class
|
return $default;
|
}
|
|
/**
|
* Execute a SQL query
|
*
|
* @param string SQL query to execute
|
* @param mixed Values to be inserted in query
|
*
|
* @return number Query handle identifier
|
*/
|
public function query()
|
{
|
$params = func_get_args();
|
$query = array_shift($params);
|
|
// Support one argument of type array, instead of n arguments
|
if (count($params) == 1 && is_array($params[0])) {
|
$params = $params[0];
|
}
|
|
return $this->_query($query, 0, 0, $params);
|
}
|
|
/**
|
* Execute a SQL query with limits
|
*
|
* @param string SQL query to execute
|
* @param int Offset for LIMIT statement
|
* @param int Number of rows for LIMIT statement
|
* @param mixed Values to be inserted in query
|
*
|
* @return PDOStatement|bool Query handle or False on error
|
*/
|
public function limitquery()
|
{
|
$params = func_get_args();
|
$query = array_shift($params);
|
$offset = array_shift($params);
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$numrows = array_shift($params);
|
|
return $this->_query($query, $offset, $numrows, $params);
|
}
|
|
/**
|
* Execute a SQL query with limits
|
*
|
* @param string $query SQL query to execute
|
* @param int $offset Offset for LIMIT statement
|
* @param int $numrows Number of rows for LIMIT statement
|
* @param array $params Values to be inserted in query
|
*
|
* @return PDOStatement|bool Query handle or False on error
|
*/
|
protected function _query($query, $offset, $numrows, $params)
|
{
|
// Read or write ?
|
$mode = preg_match('/^(select|show)/i', ltrim($query)) ? 'r' : 'w';
|
|
$this->db_connect($mode);
|
|
// check connection before proceeding
|
if (!$this->is_connected()) {
|
return $this->last_result = false;
|
}
|
|
if ($numrows || $offset) {
|
$query = $this->set_limit($query, $numrows, $offset);
|
}
|
|
$params = (array) $params;
|
|
// Because in Roundcube we mostly use queries that are
|
// executed only once, we will not use prepared queries
|
$pos = 0;
|
$idx = 0;
|
|
while ($pos = strpos($query, '?', $pos)) {
|
if ($query[$pos+1] == '?') { // skip escaped ?
|
$pos += 2;
|
}
|
else {
|
$val = $this->quote($params[$idx++]);
|
unset($params[$idx-1]);
|
$query = substr_replace($query, $val, $pos, 1);
|
$pos += strlen($val);
|
}
|
}
|
|
// replace escaped ? back to normal
|
$query = rtrim(strtr($query, array('??' => '?')), ';');
|
|
$this->debug($query);
|
|
// destroy reference to previous result, required for SQLite driver (#1488874)
|
$this->last_result = null;
|
$this->db_error_msg = null;
|
|
// send query
|
$query = $this->dbh->query($query);
|
|
if ($query === false) {
|
$error = $this->dbh->errorInfo();
|
$this->db_error = true;
|
$this->db_error_msg = sprintf('[%s] %s', $error[1], $error[2]);
|
|
rcube::raise_error(array('code' => 500, 'type' => 'db',
|
'line' => __LINE__, 'file' => __FILE__,
|
'message' => $this->db_error_msg), true, false);
|
}
|
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$this->last_result = $query;
|
|
return $query;
|
}
|
|
/**
|
* Get number of affected rows for the last query
|
*
|
* @param mixed $result Optional query handle
|
*
|
* @return int Number of (matching) rows
|
*/
|
public function affected_rows($result = null)
|
{
|
if ($result || ($result === null && ($result = $this->last_result))) {
|
return $result->rowCount();
|
}
|
|
return 0;
|
}
|
|
/**
|
* Get number of rows for a SQL query
|
* If no query handle is specified, the last query will be taken as reference
|
*
|
* @param mixed $result Optional query handle
|
* @return mixed Number of rows or false on failure
|
* @deprecated This method shows very poor performance and should be avoided.
|
*/
|
public function num_rows($result = null)
|
{
|
if ($result || ($result === null && ($result = $this->last_result))) {
|
// repeat query with SELECT COUNT(*) ...
|
if (preg_match('/^SELECT\s+(?:ALL\s+|DISTINCT\s+)?(?:.*?)\s+FROM\s+(.*)$/ims', $result->queryString, $m)) {
|
$query = $this->dbh->query('SELECT COUNT(*) FROM ' . $m[1], PDO::FETCH_NUM);
|
return $query ? intval($query->fetchColumn(0)) : false;
|
}
|
else {
|
$num = count($result->fetchAll());
|
$result->execute(); // re-execute query because there's no seek(0)
|
return $num;
|
}
|
}
|
|
return false;
|
}
|
|
/**
|
* Get last inserted record ID
|
*
|
* @param string $table Table name (to find the incremented sequence)
|
*
|
* @return mixed ID or false on failure
|
*/
|
public function insert_id($table = '')
|
{
|
if (!$this->db_connected || $this->db_mode == 'r') {
|
return false;
|
}
|
|
if ($table) {
|
// resolve table name
|
$table = $this->table_name($table);
|
}
|
|
$id = $this->dbh->lastInsertId($table);
|
|
return $id;
|
}
|
|
/**
|
* Get an associative array for one row
|
* If no query handle is specified, the last query will be taken as reference
|
*
|
* @param mixed $result Optional query handle
|
*
|
* @return mixed Array with col values or false on failure
|
*/
|
public function fetch_assoc($result = null)
|
{
|
return $this->_fetch_row($result, PDO::FETCH_ASSOC);
|
}
|
|
/**
|
* Get an index array for one row
|
* If no query handle is specified, the last query will be taken as reference
|
*
|
* @param mixed $result Optional query handle
|
*
|
* @return mixed Array with col values or false on failure
|
*/
|
public function fetch_array($result = null)
|
{
|
return $this->_fetch_row($result, PDO::FETCH_NUM);
|
}
|
|
/**
|
* Get col values for a result row
|
*
|
* @param mixed $result Optional query handle
|
* @param int $mode Fetch mode identifier
|
*
|
* @return mixed Array with col values or false on failure
|
*/
|
protected function _fetch_row($result, $mode)
|
{
|
if ($result || ($result === null && ($result = $this->last_result))) {
|
return $result->fetch($mode);
|
}
|
|
return false;
|
}
|
|
/**
|
* Adds LIMIT,OFFSET clauses to the query
|
*
|
* @param string $query SQL query
|
* @param int $limit Number of rows
|
* @param int $offset Offset
|
*
|
* @return string SQL query
|
*/
|
protected function set_limit($query, $limit = 0, $offset = 0)
|
{
|
if ($limit) {
|
$query .= ' LIMIT ' . intval($limit);
|
}
|
|
if ($offset) {
|
$query .= ' OFFSET ' . intval($offset);
|
}
|
|
return $query;
|
}
|
|
/**
|
* Returns list of tables in a database
|
*
|
* @return array List of all tables of the current database
|
*/
|
public function list_tables()
|
{
|
// get tables if not cached
|
if ($this->tables === null) {
|
$q = $this->query('SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES ORDER BY TABLE_NAME');
|
|
if ($q) {
|
$this->tables = $q->fetchAll(PDO::FETCH_COLUMN, 0);
|
}
|
else {
|
$this->tables = array();
|
}
|
}
|
|
return $this->tables;
|
}
|
|
/**
|
* Returns list of columns in database table
|
*
|
* @param string $table Table name
|
*
|
* @return array List of table cols
|
*/
|
public function list_cols($table)
|
{
|
$q = $this->query('SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = ?',
|
array($table));
|
|
if ($q) {
|
return $q->fetchAll(PDO::FETCH_COLUMN, 0);
|
}
|
|
return array();
|
}
|
|
/**
|
* Formats input so it can be safely used in a query
|
*
|
* @param mixed $input Value to quote
|
* @param string $type Type of data (integer, bool, ident)
|
*
|
* @return string Quoted/converted string for use in query
|
*/
|
public function quote($input, $type = null)
|
{
|
// handle int directly for better performance
|
if ($type == 'integer' || $type == 'int') {
|
return intval($input);
|
}
|
|
if (is_null($input)) {
|
return 'NULL';
|
}
|
|
if ($type == 'ident') {
|
return $this->quote_identifier($input);
|
}
|
|
// create DB handle if not available
|
if (!$this->dbh) {
|
$this->db_connect('r');
|
}
|
|
if ($this->dbh) {
|
$map = array(
|
'bool' => PDO::PARAM_BOOL,
|
'integer' => PDO::PARAM_INT,
|
);
|
$type = isset($map[$type]) ? $map[$type] : PDO::PARAM_STR;
|
return strtr($this->dbh->quote($input, $type), array('?' => '??')); // escape ?
|
}
|
|
return 'NULL';
|
}
|
|
/**
|
* Quotes a string so it can be safely used as a table or column name
|
*
|
* @param string $str Value to quote
|
*
|
* @return string Quoted string for use in query
|
* @deprecated Replaced by rcube_db::quote_identifier
|
* @see rcube_db::quote_identifier
|
*/
|
public function quoteIdentifier($str)
|
{
|
return $this->quote_identifier($str);
|
}
|
|
/**
|
* Quotes a string so it can be safely used as a table or column name
|
*
|
* @param string $str Value to quote
|
*
|
* @return string Quoted string for use in query
|
* @deprecated Replaced by rcube_db::quote
|
* @see rcube_db::quote
|
*/
|
public function simpleEscape($str)
|
{
|
return $this->quote($str);
|
}
|
|
/**
|
* Quotes a string so it can be safely used as a table or column name
|
*
|
* @param string $str Value to quote
|
*
|
* @return string Quoted string for use in query
|
*/
|
public function quote_identifier($str)
|
{
|
$start = $this->options['identifier_start'];
|
$end = $this->options['identifier_end'];
|
$name = array();
|
|
foreach (explode('.', $str) as $elem) {
|
$elem = str_replace(array($start, $end), '', $elem);
|
$name[] = $start . $elem . $end;
|
}
|
|
return implode($name, '.');
|
}
|
|
/**
|
* Return SQL function for current time and date
|
*
|
* @return string SQL function to use in query
|
*/
|
public function now()
|
{
|
return "now()";
|
}
|
|
/**
|
* Return list of elements for use with SQL's IN clause
|
*
|
* @param array $arr Input array
|
* @param string $type Type of data (integer, bool, ident)
|
*
|
* @return string Comma-separated list of quoted values for use in query
|
*/
|
public function array2list($arr, $type = null)
|
{
|
if (!is_array($arr)) {
|
return $this->quote($arr, $type);
|
}
|
|
foreach ($arr as $idx => $item) {
|
$arr[$idx] = $this->quote($item, $type);
|
}
|
|
return implode(',', $arr);
|
}
|
|
/**
|
* Return SQL statement to convert a field value into a unix timestamp
|
*
|
* This method is deprecated and should not be used anymore due to limitations
|
* of timestamp functions in Mysql (year 2038 problem)
|
*
|
* @param string $field Field name
|
*
|
* @return string SQL statement to use in query
|
* @deprecated
|
*/
|
public function unixtimestamp($field)
|
{
|
return "UNIX_TIMESTAMP($field)";
|
}
|
|
/**
|
* Return SQL statement to convert from a unix timestamp
|
*
|
* @param int $timestamp Unix timestamp
|
*
|
* @return string Date string in db-specific format
|
*/
|
public function fromunixtime($timestamp)
|
{
|
return date("'Y-m-d H:i:s'", $timestamp);
|
}
|
|
/**
|
* Return SQL statement for case insensitive LIKE
|
*
|
* @param string $column Field name
|
* @param string $value Search value
|
*
|
* @return string SQL statement to use in query
|
*/
|
public function ilike($column, $value)
|
{
|
return $this->quote_identifier($column).' LIKE '.$this->quote($value);
|
}
|
|
/**
|
* Abstract SQL statement for value concatenation
|
*
|
* @return string SQL statement to be used in query
|
*/
|
public function concat(/* col1, col2, ... */)
|
{
|
$args = func_get_args();
|
if (is_array($args[0])) {
|
$args = $args[0];
|
}
|
|
return '(' . join(' || ', $args) . ')';
|
}
|
|
/**
|
* Encodes non-UTF-8 characters in string/array/object (recursive)
|
*
|
* @param mixed $input Data to fix
|
*
|
* @return mixed Properly UTF-8 encoded data
|
*/
|
public static function encode($input)
|
{
|
if (is_object($input)) {
|
foreach (get_object_vars($input) as $idx => $value) {
|
$input->$idx = self::encode($value);
|
}
|
return $input;
|
}
|
else if (is_array($input)) {
|
foreach ($input as $idx => $value) {
|
$input[$idx] = self::encode($value);
|
}
|
return $input;
|
}
|
|
return utf8_encode($input);
|
}
|
|
/**
|
* Decodes encoded UTF-8 string/object/array (recursive)
|
*
|
* @param mixed $input Input data
|
*
|
* @return mixed Decoded data
|
*/
|
public static function decode($input)
|
{
|
if (is_object($input)) {
|
foreach (get_object_vars($input) as $idx => $value) {
|
$input->$idx = self::decode($value);
|
}
|
return $input;
|
}
|
else if (is_array($input)) {
|
foreach ($input as $idx => $value) {
|
$input[$idx] = self::decode($value);
|
}
|
return $input;
|
}
|
|
return utf8_decode($input);
|
}
|
|
/**
|
* Return correct name for a specific database table
|
*
|
* @param string $table Table name
|
*
|
* @return string Translated table name
|
*/
|
public function table_name($table)
|
{
|
$rcube = rcube::get_instance();
|
|
// return table name if configured
|
$config_key = 'db_table_'.$table;
|
|
if ($name = $rcube->config->get($config_key)) {
|
return $name;
|
}
|
|
return $table;
|
}
|
|
/**
|
* MDB2 DSN string parser
|
*
|
* @param string $sequence Secuence name
|
*
|
* @return array DSN parameters
|
*/
|
public static function parse_dsn($dsn)
|
{
|
if (empty($dsn)) {
|
return null;
|
}
|
|
// Find phptype and dbsyntax
|
if (($pos = strpos($dsn, '://')) !== false) {
|
$str = substr($dsn, 0, $pos);
|
$dsn = substr($dsn, $pos + 3);
|
}
|
else {
|
$str = $dsn;
|
$dsn = null;
|
}
|
|
// Get phptype and dbsyntax
|
// $str => phptype(dbsyntax)
|
if (preg_match('|^(.+?)\((.*?)\)$|', $str, $arr)) {
|
$parsed['phptype'] = $arr[1];
|
$parsed['dbsyntax'] = !$arr[2] ? $arr[1] : $arr[2];
|
}
|
else {
|
$parsed['phptype'] = $str;
|
$parsed['dbsyntax'] = $str;
|
}
|
|
if (empty($dsn)) {
|
return $parsed;
|
}
|
|
// Get (if found): username and password
|
// $dsn => username:password@protocol+hostspec/database
|
if (($at = strrpos($dsn,'@')) !== false) {
|
$str = substr($dsn, 0, $at);
|
$dsn = substr($dsn, $at + 1);
|
if (($pos = strpos($str, ':')) !== false) {
|
$parsed['username'] = rawurldecode(substr($str, 0, $pos));
|
$parsed['password'] = rawurldecode(substr($str, $pos + 1));
|
}
|
else {
|
$parsed['username'] = rawurldecode($str);
|
}
|
}
|
|
// Find protocol and hostspec
|
|
// $dsn => proto(proto_opts)/database
|
if (preg_match('|^([^(]+)\((.*?)\)/?(.*?)$|', $dsn, $match)) {
|
$proto = $match[1];
|
$proto_opts = $match[2] ? $match[2] : false;
|
$dsn = $match[3];
|
}
|
// $dsn => protocol+hostspec/database (old format)
|
else {
|
if (strpos($dsn, '+') !== false) {
|
list($proto, $dsn) = explode('+', $dsn, 2);
|
}
|
if ( strpos($dsn, '//') === 0
|
&& strpos($dsn, '/', 2) !== false
|
&& $parsed['phptype'] == 'oci8'
|
) {
|
//oracle's "Easy Connect" syntax:
|
//"username/password@[//]host[:port][/service_name]"
|
//e.g. "scott/tiger@//mymachine:1521/oracle"
|
$proto_opts = $dsn;
|
$pos = strrpos($proto_opts, '/');
|
$dsn = substr($proto_opts, $pos + 1);
|
$proto_opts = substr($proto_opts, 0, $pos);
|
}
|
else if (strpos($dsn, '/') !== false) {
|
list($proto_opts, $dsn) = explode('/', $dsn, 2);
|
}
|
else {
|
$proto_opts = $dsn;
|
$dsn = null;
|
}
|
}
|
|
// process the different protocol options
|
$parsed['protocol'] = (!empty($proto)) ? $proto : 'tcp';
|
$proto_opts = rawurldecode($proto_opts);
|
if (strpos($proto_opts, ':') !== false) {
|
list($proto_opts, $parsed['port']) = explode(':', $proto_opts);
|
}
|
if ($parsed['protocol'] == 'tcp') {
|
$parsed['hostspec'] = $proto_opts;
|
}
|
else if ($parsed['protocol'] == 'unix') {
|
$parsed['socket'] = $proto_opts;
|
}
|
|
// Get dabase if any
|
// $dsn => database
|
if ($dsn) {
|
// /database
|
if (($pos = strpos($dsn, '?')) === false) {
|
$parsed['database'] = rawurldecode($dsn);
|
// /database?param1=value1¶m2=value2
|
}
|
else {
|
$parsed['database'] = rawurldecode(substr($dsn, 0, $pos));
|
$dsn = substr($dsn, $pos + 1);
|
if (strpos($dsn, '&') !== false) {
|
$opts = explode('&', $dsn);
|
}
|
else { // database?param1=value1
|
$opts = array($dsn);
|
}
|
foreach ($opts as $opt) {
|
list($key, $value) = explode('=', $opt);
|
if (!array_key_exists($key, $parsed) || false === $parsed[$key]) {
|
// don't allow params overwrite
|
$parsed[$key] = rawurldecode($value);
|
}
|
}
|
}
|
}
|
|
return $parsed;
|
}
|
|
/**
|
* Returns PDO DSN string from DSN array
|
*
|
* @param array $dsn DSN parameters
|
*
|
* @return string DSN string
|
*/
|
protected function dsn_string($dsn)
|
{
|
$params = array();
|
$result = $dsn['phptype'] . ':';
|
|
if ($dsn['hostspec']) {
|
$params[] = 'host=' . $dsn['hostspec'];
|
}
|
|
if ($dsn['port']) {
|
$params[] = 'port=' . $dsn['port'];
|
}
|
|
if ($dsn['database']) {
|
$params[] = 'dbname=' . $dsn['database'];
|
}
|
|
if (!empty($params)) {
|
$result .= implode(';', $params);
|
}
|
|
return $result;
|
}
|
|
/**
|
* Returns driver-specific connection options
|
*
|
* @param array $dsn DSN parameters
|
*
|
* @return array Connection options
|
*/
|
protected function dsn_options($dsn)
|
{
|
$result = array();
|
|
return $result;
|
}
|
}
|
