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diff --git a/program/lib/Roundcube/rcube_db.php b/program/lib/Roundcube/rcube_db.php
index 4d4f6dcea..ee063c5c0 100644
--- a/program/lib/Roundcube/rcube_db.php
+++ b/program/lib/Roundcube/rcube_db.php
@@ -1,1501 +1,1503 @@
<?php
/**
+-----------------------------------------------------------------------+
| This file is part of the Roundcube Webmail client |
| |
| Copyright (C) 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.
*
* @package Framework
* @subpackage Database
*/
class rcube_db
{
/** @var string Database implementation (mysql, postgres, etc.) */
public $db_provider;
protected $db_dsnw; // DSN for write operations
protected $db_dsnr; // DSN for read operations
protected $db_dsnw_array; // DSN for write operations
protected $db_dsnr_array; // DSN for read operations
protected $db_connected = false; // Already connected ?
protected $db_mode; // Connection mode
protected $db_pconn = false; // Persistent connections flag
protected $dbh; // Connection handle
protected $dbhs = [];
protected $table_connections = [];
protected $db_error = false;
protected $db_error_msg = '';
protected $conn_failure = false;
protected $db_index = 0;
protected $last_result;
protected $tables;
protected $variables;
protected $options = [
// column/table quotes
'identifier_start' => '"',
'identifier_end' => '"',
// date/time input format
'datetime_format' => 'Y-m-d H:i:s',
'table_prefix' => '',
];
const DEBUG_LINE_LENGTH = 4096;
const DEFAULT_QUOTE = '`';
const TYPE_SQL = 'sql';
const TYPE_INT = 'integer';
const TYPE_BOOL = 'bool';
const TYPE_STRING = 'string';
/**
* Factory, returns driver-specific instance of the class
*
* @param string $db_dsnw DSN for read/write operations
* @param string $db_dsnr Optional DSN for read only operations
* @param bool $pconn Enables persistent connections
*
* @return rcube_db Object instance
*/
public static function factory($db_dsnw, $db_dsnr = '', $pconn = false)
{
$driver = strtolower(substr($db_dsnw, 0, strpos($db_dsnw, ':')));
$driver_map = [
'sqlite2' => 'sqlite',
'sybase' => 'mssql',
'dblib' => 'mssql',
'mysqli' => 'mysql',
'oci' => 'oracle',
'oci8' => 'oracle',
];
$driver = isset($driver_map[$driver]) ? $driver_map[$driver] : $driver;
$class = "rcube_db_$driver";
if (!$driver || !class_exists($class)) {
rcube::raise_error([
'code' => 600, 'type' => 'db',
'line' => __LINE__, 'file' => __FILE__,
'message' => "Configuration error. Unsupported database driver: $driver"
],
true, true
);
}
return new $class($db_dsnw, $db_dsnr, $pconn);
}
/**
* Object constructor
*
* @param string $db_dsnw DSN for read/write operations
* @param string $db_dsnr Optional DSN for read only operations
* @param bool $pconn Enables persistent connections
*/
public function __construct($db_dsnw, $db_dsnr = '', $pconn = false)
{
if (empty($db_dsnr)) {
$db_dsnr = $db_dsnw;
}
$this->db_dsnw = $db_dsnw;
$this->db_dsnr = $db_dsnr;
$this->db_pconn = $pconn;
$this->db_dsnw_array = self::parse_dsn($db_dsnw);
$this->db_dsnr_array = self::parse_dsn($db_dsnr);
$config = rcube::get_instance()->config;
$this->options['table_prefix'] = $config->get('db_prefix');
$this->options['dsnw_noread'] = $config->get('db_dsnw_noread', false);
$this->options['table_dsn_map'] = array_map([$this, 'table_name'], $config->get('db_table_dsn', []));
}
/**
* Connect to specific database
*
* @param array $dsn DSN for DB connections
* @param string $mode Connection mode (r|w)
*/
protected function dsn_connect($dsn, $mode)
{
$this->db_error = false;
$this->db_error_msg = null;
// return existing handle
if (!empty($this->dbhs[$mode])) {
$this->dbh = $this->dbhs[$mode];
$this->db_mode = $mode;
return $this->dbh;
}
// connect to database
if ($dbh = $this->conn_create($dsn)) {
$this->dbhs[$mode] = $dbh;
$this->db_mode = $mode;
$this->db_connected = true;
}
}
/**
* Create PDO connection
*/
protected function conn_create($dsn)
{
// Get database specific connection options
$dsn_string = $this->dsn_string($dsn);
$dsn_options = $this->dsn_options($dsn);
// 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);
$username = isset($dsn['username']) ? $dsn['username'] : null;
$password = isset($dsn['password']) ? $dsn['password'] : null;
$this->dbh = new PDO($dsn_string, $username, $password, $dsn_options);
// don't throw exceptions or warnings
$this->dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT);
$this->conn_configure($dsn, $this->dbh);
}
catch (Exception $e) {
$this->db_error = true;
$this->db_error_msg = $e->getMessage();
rcube::raise_error([
'code' => 500, 'type' => 'db',
'line' => __LINE__, 'file' => __FILE__,
'message' => $this->db_error_msg
],
true, false
);
return null;
}
return $this->dbh;
}
/**
* 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)
{
}
/**
* Connect to appropriate database depending on the operation
*
* @param string $mode Connection mode (r|w)
* @param bool $force Enforce using the given mode
*/
public function db_connect($mode, $force = false)
{
// previous connection failed, don't attempt to connect again
if ($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 allowed)
if ($this->db_mode == $mode || $this->db_mode == 'w' && !$force && empty($this->options['dsnw_noread'])) {
return;
}
}
$dsn = ($mode == 'r') ? $this->db_dsnr_array : $this->db_dsnw_array;
$this->dsn_connect($dsn, $mode);
// use write-master when read-only fails
if (!$this->db_connected && $mode == 'r' && $this->is_replicated()) {
$this->dsn_connect($this->db_dsnw_array, 'w');
}
$this->conn_failure = !$this->db_connected;
}
/**
* Analyze the given SQL statement and select the appropriate connection to use
*/
protected function dsn_select($query)
{
// no replication
if ($this->db_dsnw == $this->db_dsnr) {
return 'w';
}
// Read or write ?
$mode = preg_match('/^(select|show|set)/i', $query) ? 'r' : 'w';
$start = '[' . $this->options['identifier_start'] . self::DEFAULT_QUOTE . ']';
$end = '[' . $this->options['identifier_end'] . self::DEFAULT_QUOTE . ']';
$regex = '/(?:^|\s)(from|update|into|join)\s+'.$start.'?([a-z0-9._]+)'.$end.'?\s+/i';
// find tables involved in this query
if (preg_match_all($regex, $query, $matches, PREG_SET_ORDER)) {
foreach ($matches as $m) {
$table = $m[2];
// always use direct mapping
if (!empty($this->options['table_dsn_map'][$table])) {
$mode = $this->options['table_dsn_map'][$table];
break; // primary table rules
}
else if ($mode == 'r') {
// connected to db with the same or "higher" mode for this table
- $db_mode = $this->table_connections[$table];
- if ($db_mode == 'w' && empty($this->options['dsnw_noread'])) {
- $mode = $db_mode;
+ if (isset($this->table_connections[$table])) {
+ $db_mode = $this->table_connections[$table];
+ if ($db_mode == 'w' && empty($this->options['dsnw_noread'])) {
+ $mode = $db_mode;
+ }
}
}
}
// remember mode chosen (for primary table)
$table = $matches[0][2];
$this->table_connections[$table] = $mode;
}
return $mode;
}
/**
* Activate/deactivate debug mode
*
* @param bool $dbg True if SQL queries should be logged
*/
public function set_debug($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 (!empty($this->options['debug_mode'])) {
if (($len = strlen($query)) > self::DEBUG_LINE_LENGTH) {
$diff = $len - self::DEBUG_LINE_LENGTH;
$query = substr($query, 0, self::DEBUG_LINE_LENGTH)
. "... [truncated $diff bytes]";
}
rcube::write_log('sql', '[' . (++$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 ? $this->db_error_msg : null;
}
/**
* Connection state checker
*
* @return bool True if in connected state
*/
public function is_connected()
{
return !is_object($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 rcube::get_instance()->config->get('db_' . $varname, $default);
}
/**
* Execute a SQL query
*
* @param string SQL query to execute
* @param mixed Values to be inserted in query
*
* @return PDOStatement|false Query handle or False on error
*/
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|false Query handle or False on error
*/
public function limitquery()
{
$params = func_get_args();
$query = array_shift($params);
$offset = array_shift($params);
$numrows = array_shift($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 $params Values to be inserted in query
*
* @return PDOStatement|false Query handle or False on error
*/
protected function _query($query, $offset, $numrows, $params)
{
$query = ltrim($query);
$this->db_connect($this->dsn_select($query), true);
// check connection before proceeding
if (!$this->is_connected()) {
return $this->last_result = false;
}
if ($numrows || $offset) {
$query = $this->set_limit($query, $numrows, $offset);
}
// replace self::DEFAULT_QUOTE with driver-specific quoting
$query = $this->query_parse($query);
// Because in Roundcube we mostly use queries that are
// executed only once, we will not use prepared queries
$pos = 0;
$idx = 0;
if (count($params)) {
while ($pos = strpos($query, '?', $pos)) {
if (isset($query[$pos+1]) && $query[$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);
}
}
}
$query = rtrim($query, " \t\n\r\0\x0B;");
// replace escaped '?' and quotes back to normal, see self::quote()
$query = str_replace(
['??', self::DEFAULT_QUOTE.self::DEFAULT_QUOTE],
['?', self::DEFAULT_QUOTE],
$query
);
// log query
$this->debug($query);
return $this->query_execute($query);
}
/**
* Query execution
*/
protected function query_execute($query)
{
// destroy reference to previous result, required for SQLite driver (#1488874)
$this->last_result = null;
$this->db_error_msg = null;
// send query
$result = $this->dbh->query($query);
if ($result === false) {
$result = $this->handle_error($query);
}
return $this->last_result = $result;
}
/**
* Parse SQL query and replace identifier quoting
*
* @param string $query SQL query
*
* @return string SQL query
*/
protected function query_parse($query)
{
$start = $this->options['identifier_start'];
$end = $this->options['identifier_end'];
$quote = self::DEFAULT_QUOTE;
if ($start == $quote) {
return $query;
}
$pos = 0;
$in = false;
while ($pos = strpos($query, $quote, $pos)) {
if (isset($query[$pos+1]) && $query[$pos+1] == $quote) { // skip escaped quote
$pos += 2;
}
else {
if ($in) {
$q = $end;
$in = false;
}
else {
$q = $start;
$in = true;
}
$query = substr_replace($query, $q, $pos, 1);
$pos++;
}
}
return $query;
}
/**
* Helper method to handle DB errors.
* This by default logs the error but could be overridden by a driver implementation
*
* @param string $query Query that triggered the error
*
* @return mixed Result to be stored and returned
*/
protected function handle_error($query)
{
$error = $this->dbh->errorInfo();
if (empty($this->options['ignore_key_errors']) || !in_array($error[0], ['23000', '23505'])) {
$this->db_error = true;
$this->db_error_msg = sprintf('[%s] %s', $error[1], $error[2]);
if (empty($this->options['ignore_errors'])) {
rcube::raise_error([
'code' => 500, 'type' => 'db', 'line' => __LINE__, 'file' => __FILE__,
'message' => $this->db_error_msg . " (SQL Query: $query)"
], true, false);
}
}
return false;
}
/**
* INSERT ... ON DUPLICATE KEY UPDATE (or equivalent).
* When not supported by the engine we do UPDATE and INSERT.
*
* @param string $table Table name (should be already passed via table_name() with quoting)
* @param array $keys Hash array (column => value) of the unique constraint
* @param array $columns List of columns to update
* @param array $values List of values to update (number of elements
* should be the same as in $columns)
*
* @return PDOStatement|bool Query handle or False on error
* @todo Multi-insert support
*/
public function insert_or_update($table, $keys, $columns, $values)
{
$columns = array_map(function($i) { return "`$i`"; }, $columns);
$sets = array_map(function($i) { return "$i = ?"; }, $columns);
$where = $keys;
array_walk($where, function(&$val, $key) {
$val = $this->quote_identifier($key) . " = " . $this->quote($val);
});
// First try UPDATE
$result = $this->query("UPDATE $table SET " . implode(", ", $sets)
. " WHERE " . implode(" AND ", $where), $values);
// if UPDATE fails use INSERT
if ($result && !$this->affected_rows($result)) {
$cols = implode(', ', array_map(function($i) { return "`$i`"; }, array_keys($keys)));
$cols .= ', ' . implode(', ', $columns);
$vals = implode(', ', array_map(function($i) { return $this->quote($i); }, $keys));
$vals .= ', ' . rtrim(str_repeat('?, ', count($columns)), ', ');
$result = $this->query("INSERT INTO $table ($cols) VALUES ($vals)", $values);
}
return $result;
}
/**
* 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 = $this->last_result))) {
if ($result !== true) {
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))) && $result !== true) {
// repeat query with SELECT COUNT(*) ...
if (preg_match('/^SELECT\s+(?:ALL\s+|DISTINCT\s+)?(?:.*?)\s+FROM\s+(.*)$/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);
}
return $this->dbh->lastInsertId($table);
}
/**
* Get an associative array for one row
* If no query handle is specified, the last query will be taken as reference
*
* @param mixed $result Optional query handle
*
* @return array|false Array with col values or false on failure
*/
public function fetch_assoc($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 $result Optional query handle
*
* @return array|false Array with col values or false on failure
*/
public function fetch_array($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 $mode Fetch mode identifier
*
* @return array|false Array with col values or false on failure
*/
protected function _fetch_row($result, $mode)
{
if ($result || ($result === null && ($result = $this->last_result))) {
if ($result !== true) {
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"
. " WHERE TABLE_TYPE = 'BASE TABLE'"
. " ORDER BY TABLE_NAME"
);
$this->tables = $q ? $q->fetchAll(PDO::FETCH_COLUMN, 0) : [];
}
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 = ?', $table);
if ($q) {
return $q->fetchAll(PDO::FETCH_COLUMN, 0);
}
return [];
}
/**
* Start transaction
*
* @return bool True on success, False on failure
*/
public function startTransaction()
{
$this->db_connect('w', true);
// check connection before proceeding
if (!$this->is_connected()) {
return $this->last_result = false;
}
$this->debug('BEGIN TRANSACTION');
return $this->last_result = $this->dbh->beginTransaction();
}
/**
* Commit transaction
*
* @return bool True on success, False on failure
*/
public function endTransaction()
{
$this->db_connect('w', true);
// check connection before proceeding
if (!$this->is_connected()) {
return $this->last_result = false;
}
$this->debug('COMMIT TRANSACTION');
return $this->last_result = $this->dbh->commit();
}
/**
* Rollback transaction
*
* @return bool True on success, False on failure
*/
public function rollbackTransaction()
{
$this->db_connect('w', true);
// check connection before proceeding
if (!$this->is_connected()) {
return $this->last_result = false;
}
$this->debug('ROLLBACK TRANSACTION');
return $this->last_result = $this->dbh->rollBack();
}
/**
* Release resources related to the last query result.
* When we know we don't need to access the last query result we can destroy it
* and release memory. Useful especially if the query returned big chunk of data.
*/
public function reset()
{
$this->last_result = null;
}
/**
* Terminate database connection.
*/
public function closeConnection()
{
$this->db_connected = false;
$this->db_index = 0;
// release statement and connection resources
$this->last_result = null;
$this->dbh = null;
$this->dbhs = [];
}
/**
* 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, $type = null)
{
if ($input instanceof rcube_db_param) {
return (string) $input;
}
// handle int directly for better performance
if ($type == 'integer' || $type == 'int') {
return intval($input);
}
if (is_null($input)) {
return 'NULL';
}
if ($input instanceof DateTime) {
return $this->quote($input->format($this->options['datetime_format']));
}
if ($type == 'ident') {
return $this->quote_identifier($input);
}
// create DB handle if not available
if (!$this->dbh) {
$this->db_connect('r');
}
if ($this->dbh) {
$map = [
'bool' => PDO::PARAM_BOOL,
'integer' => PDO::PARAM_INT,
];
$type = isset($map[$type]) ? $map[$type] : PDO::PARAM_STR;
return strtr($this->dbh->quote($input, $type),
// escape ? and `
['?' => '??', self::DEFAULT_QUOTE => self::DEFAULT_QUOTE.self::DEFAULT_QUOTE]
);
}
return 'NULL';
}
/**
* Escapes a string so it can be safely used in a query
*
* @param string $str A string to escape
*
* @return string Escaped string for use in a query
*/
public function escape($str)
{
if (is_null($str)) {
return 'NULL';
}
return substr($this->quote($str), 1, -1);
}
/**
* 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);
}
/**
* Escapes a string so it can be safely used in a query
*
* @param string $str A string to escape
*
* @return string Escaped string for use in a query
* @deprecated Replaced by rcube_db::escape
* @see rcube_db::escape
*/
public function escapeSimple($str)
{
return $this->escape($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 = [];
foreach (explode('.', $str) as $elem) {
$elem = str_replace([$start, $end], '', $elem);
$name[] = $start . $elem . $end;
}
return implode('.', $name);
}
/**
* Create query parameter object
*
* @param mixed $value Parameter value
* @param string $type Parameter type (one of rcube_db::TYPE_* constants)
*/
public function param($value, $type = null)
{
return new rcube_db_param($this, $value, $type);
}
/**
* Return SQL function for current time and date
*
* @param int $interval Optional interval (in seconds) to add/subtract
*
* @return string SQL function to use in query
*/
public function now($interval = 0)
{
$result = 'now()';
if ($interval) {
$result .= ' ' . ($interval > 0 ? '+' : '-') . ' INTERVAL '
. ($interval > 0 ? intval($interval) : intval($interval) * -1)
. ' SECOND';
}
return $result;
}
/**
* 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 $timestamp Unix timestamp
*
* @return string Date string in db-specific format
* @deprecated
*/
public function fromunixtime($timestamp)
{
return $this->quote(date($this->options['datetime_format'], $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, ... */)
{
$args = func_get_args();
if (!empty($args) && is_array($args[0])) {
$args = $args[0];
}
return '(' . implode(' || ', $args) . ')';
}
/**
* Encodes non-UTF-8 characters in string/array/object (recursive)
*
* @param mixed $input Data to fix
* @param bool $serialized Enable serialization
*
* @return mixed Properly UTF-8 encoded data
*/
public static function encode($input, $serialized = false)
{
// use Base64 encoding to workaround issues with invalid
// or null characters in serialized string (#1489142)
if ($serialized) {
return base64_encode(serialize($input));
}
if (is_object($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
* @param bool $serialized Enable serialization
*
* @return mixed Decoded data
*/
public static function decode($input, $serialized = false)
{
// use Base64 encoding to workaround issues with invalid
// or null characters in serialized string (#1489142)
if ($serialized) {
// Keep backward compatibility where base64 wasn't used
if (strpos(substr($input, 0, 16), ':') !== false) {
return self::decode(@unserialize($input));
}
return @unserialize(base64_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
* @param bool $quoted Quote table identifier
*
* @return string Translated table name
*/
public function table_name($table, $quoted = false)
{
// let plugins alter the table name (#1489837)
$plugin = rcube::get_instance()->plugins->exec_hook('db_table_name', ['table' => $table]);
$table = $plugin['table'];
// add prefix to the table name if configured
if (($prefix = $this->options['table_prefix']) && strpos($table, $prefix) !== 0) {
$table = $prefix . $table;
}
if ($quoted) {
$table = $this->quote_identifier($table);
}
return $table;
}
/**
* Set class option value
*
* @param string $name Option name
* @param mixed $value Option value
*/
public function set_option($name, $value)
{
$this->options[$name] = $value;
}
/**
* Set DSN connection to be used for the given table
*
* @param string $table Table name
* @param string $mode DSN connection ('r' or 'w') to be used
*/
public function set_table_dsn($table, $mode)
{
$this->options['table_dsn_map'][$this->table_name($table)] = $mode;
}
/**
* MDB2 DSN string parser
*
* @param string $sequence Sequence name
*
* @return array DSN parameters
*/
public static function parse_dsn($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' && strlen($proto_opts)) {
$parsed['hostspec'] = $proto_opts;
}
else if ($parsed['protocol'] == 'unix') {
$parsed['socket'] = $proto_opts;
}
// Get database if any
// $dsn => database
if ($dsn) {
// /database
if (($pos = strpos($dsn, '?')) === false) {
$parsed['database'] = rawurldecode($dsn);
}
else {
// /database?param1=value1&param2=value2
$parsed['database'] = rawurldecode(substr($dsn, 0, $pos));
$dsn = substr($dsn, $pos + 1);
if (strpos($dsn, '&') !== false) {
$opts = explode('&', $dsn);
}
else { // database?param1=value1
$opts = [$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);
}
}
}
// remove problematic suffix (#7034)
$parsed['database'] = preg_replace('/;.*$/', '', $parsed['database']);
// Resolve relative path to the sqlite database file
// so for example it works with Roundcube Installer
if (!empty($parsed['phptype']) && !empty($parsed['database'])
&& stripos($parsed['phptype'], 'sqlite') === 0
&& $parsed['database'][0] != '/'
&& strpos($parsed['database'], ':') === false
) {
$parsed['database'] = INSTALL_PATH . $parsed['database'];
}
}
return $parsed;
}
/**
* Returns PDO DSN string from DSN array
*
* @param array $dsn DSN parameters
*
* @return string DSN string
*/
protected function dsn_string($dsn)
{
$params = [];
$result = $dsn['phptype'] . ':';
if (isset($dsn['hostspec'])) {
$params[] = 'host=' . $dsn['hostspec'];
}
if (isset($dsn['port'])) {
$params[] = 'port=' . $dsn['port'];
}
if (isset($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)
{
$result = [];
if ($this->db_pconn) {
$result[PDO::ATTR_PERSISTENT] = true;
}
if (!empty($dsn['prefetch'])) {
$result[PDO::ATTR_PREFETCH] = (int) $dsn['prefetch'];
}
if (!empty($dsn['timeout'])) {
$result[PDO::ATTR_TIMEOUT] = (int) $dsn['timeout'];
}
return $result;
}
/**
* Execute the given SQL script
*
* @param string $sql SQL queries to execute
*
* @return boolean True on success, False on error
*/
public function exec_script($sql)
{
$sql = $this->fix_table_names($sql);
$buff = '';
$exec = '';
foreach (explode("\n", $sql) as $line) {
$trimmed = trim($line);
if ($trimmed == '' || preg_match('/^--/', $trimmed)) {
continue;
}
if ($trimmed == 'GO') {
$exec = $buff;
}
else if ($trimmed[strlen($trimmed)-1] == ';') {
$exec = $buff . substr(rtrim($line), 0, -1);
}
if ($exec) {
$this->query($exec);
$buff = '';
$exec = '';
if ($this->db_error) {
break;
}
}
else {
$buff .= $line . "\n";
}
}
return !$this->db_error;
}
/**
* Parse SQL file and fix table names according to table prefix
*/
protected function fix_table_names($sql)
{
if (!$this->options['table_prefix']) {
return $sql;
}
$sql = preg_replace_callback(
'/((TABLE|TRUNCATE( TABLE)?|(?<!ON )UPDATE|INSERT INTO|FROM'
. '| ON(?! (DELETE|UPDATE))|REFERENCES|CONSTRAINT|FOREIGN KEY|INDEX|UNIQUE( INDEX)?)'
. '\s+(IF (NOT )?EXISTS )?[`"]*)([^`"\( \r\n]+)/',
[$this, 'fix_table_names_callback'],
$sql
);
return $sql;
}
/**
* Preg_replace callback for fix_table_names()
*/
protected function fix_table_names_callback($matches)
{
$prefix = $this->options['table_prefix'];
// Schema prefix (ends with a dot)
if ($prefix[strlen($prefix)-1] === '.') {
// These can't have a schema prefix
if (preg_match('/(CONSTRAINT|UNIQUE|INDEX)[\s\t`"]*$/', $matches[1])) {
$prefix = '';
}
else {
// check if the identifier is quoted, then quote the prefix
$last = $matches[1][strlen($matches[1])-1];
if ($last === '`' || $last === '"') {
$prefix = substr($prefix, 0, -1) . $last . '.' . $last;
}
}
}
return $matches[1] . $prefix . $matches[count($matches)-1];
}
}

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