From 32c612c11291dd0ee3f19741683ed95276aa9065 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Mon, 24 Feb 2014 08:14:19 -0500
Subject: [PATCH] Fix some PDO::MYSQL_* constants (wrongly described in PHP manual before 5.3.21)
---
program/lib/Roundcube/rcube_db_mysql.php | 66 ++++++++++++++++++++++++++++----
1 files changed, 57 insertions(+), 9 deletions(-)
diff --git a/program/lib/Roundcube/rcube_db_mysql.php b/program/lib/Roundcube/rcube_db_mysql.php
index 1c5ba1d..e6417cc 100644
--- a/program/lib/Roundcube/rcube_db_mysql.php
+++ b/program/lib/Roundcube/rcube_db_mysql.php
@@ -2,8 +2,6 @@
/**
+-----------------------------------------------------------------------+
- | program/include/rcube_db_mysql.php |
- | |
| This file is part of the Roundcube Webmail client |
| Copyright (C) 2005-2012, The Roundcube Dev Team |
| |
@@ -14,12 +12,10 @@
| PURPOSE: |
| Database wrapper class that implements PHP PDO functions |
| for MySQL database |
- | |
+-----------------------------------------------------------------------+
| Author: Aleksander Machniak <alec@alec.pl> |
+-----------------------------------------------------------------------+
*/
-
/**
* Database independent query interface
@@ -34,13 +30,37 @@
public $db_provider = 'mysql';
/**
- * Driver initialization/configuration
+ * Object constructor
+ *
+ * @param string $db_dsnw DSN for read/write operations
+ * @param string $db_dsnr Optional DSN for read only operations
+ * @param bool $pconn Enables persistent connections
*/
- protected function init()
+ public function __construct($db_dsnw, $db_dsnr = '', $pconn = false)
{
+ if (version_compare(PHP_VERSION, '5.3.0', '<')) {
+ rcube::raise_error(array('code' => 600, 'type' => 'db',
+ 'line' => __LINE__, 'file' => __FILE__,
+ 'message' => "MySQL driver requires PHP >= 5.3, current version is " . PHP_VERSION),
+ true, true);
+ }
+
+ parent::__construct($db_dsnw, $db_dsnr, $pconn);
+
// SQL identifiers quoting
$this->options['identifier_start'] = '`';
$this->options['identifier_end'] = '`';
+ }
+
+ /**
+ * Driver-specific configuration of database connection
+ *
+ * @param array $dsn DSN for DB connections
+ * @param PDO $dbh Connection handler
+ */
+ protected function conn_configure($dsn, $dbh)
+ {
+ $dbh->query("SET NAMES 'utf8'");
}
/**
@@ -108,11 +128,11 @@
$result = array();
if (!empty($dsn['key'])) {
- $result[PDO::MYSQL_ATTR_KEY] = $dsn['key'];
+ $result[PDO::MYSQL_ATTR_SSL_KEY] = $dsn['key'];
}
if (!empty($dsn['cipher'])) {
- $result[PDO::MYSQL_ATTR_CIPHER] = $dsn['cipher'];
+ $result[PDO::MYSQL_ATTR_SSL_CIPHER] = $dsn['cipher'];
}
if (!empty($dsn['cert'])) {
@@ -129,6 +149,9 @@
// Always return matching (not affected only) rows count
$result[PDO::MYSQL_ATTR_FOUND_ROWS] = true;
+
+ // Enable AUTOCOMMIT mode (#1488902)
+ $result[PDO::ATTR_AUTOCOMMIT] = true;
return $result;
}
@@ -148,7 +171,7 @@
$result = $this->query('SHOW VARIABLES');
- while ($sql_arr = $this->fetch_array($result)) {
+ while ($row = $this->fetch_array($result)) {
$this->variables[$row[0]] = $row[1];
}
}
@@ -156,4 +179,29 @@
return isset($this->variables[$varname]) ? $this->variables[$varname] : $default;
}
+ /**
+ * Handle DB errors, re-issue the query on deadlock errors from InnoDB row-level locking
+ *
+ * @param string Query that triggered the error
+ * @return mixed Result to be stored and returned
+ */
+ protected function handle_error($query)
+ {
+ $error = $this->dbh->errorInfo();
+
+ // retry after "Deadlock found when trying to get lock" errors
+ $retries = 2;
+ while ($error[1] == 1213 && $retries >= 0) {
+ usleep(50000); // wait 50 ms
+ $result = $this->dbh->query($query);
+ if ($result !== false) {
+ return $result;
+ }
+ $error = $this->dbh->errorInfo();
+ $retries--;
+ }
+
+ return parent::handle_error($query);
+ }
+
}
--
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