From a2cf7c41b97a587d90188b83e4d15da1567a54b4 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Wed, 09 Apr 2014 02:48:28 -0400
Subject: [PATCH] Fix accidental key replacements
---
program/lib/Roundcube/rcube_db_mysql.php | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++-----
1 files changed, 50 insertions(+), 5 deletions(-)
diff --git a/program/lib/Roundcube/rcube_db_mysql.php b/program/lib/Roundcube/rcube_db_mysql.php
index c32cc25..400813d 100644
--- a/program/lib/Roundcube/rcube_db_mysql.php
+++ b/program/lib/Roundcube/rcube_db_mysql.php
@@ -30,13 +30,30 @@
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 = '', $pconn = false)
{
+ parent::__construct($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'");
}
/**
@@ -104,11 +121,11 @@
$result = array();
if (!empty($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'])) {
@@ -125,6 +142,9 @@
// 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;
}
@@ -144,7 +164,7 @@
$result = $this->query('SHOW VARIABLES');
- while ($sql_arr = $this->fetch_array($result)) {
+ while ($row = $this->fetch_array($result)) {
$this->variables[$row[0]] = $row[1];
}
}
@@ -152,4 +172,29 @@
return isset($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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