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authorAleksander Machniak <machniak@kolabsys.com>2014-09-18 09:25:42 (GMT)
committerAleksander Machniak <machniak@kolabsys.com>2014-09-18 09:25:42 (GMT)
commit18dc3e4ae07b77dba761e0712571aa5f6bed4187 (patch)
tree0a951791083d72c143617a3452477936d2d45214
parent092232c129fc7c9743057d169f6178ebb3d99871 (diff)
downloadkolab-syncroton-18dc3e4ae07b77dba761e0712571aa5f6bed4187.tar.gz
Add Oracle drivers
-rw-r--r--lib/ext/Roundcube/rcube_db.php176
-rw-r--r--lib/ext/Roundcube/rcube_db_mysql.php7
-rw-r--r--lib/ext/Roundcube/rcube_db_oci8.php534
-rw-r--r--lib/ext/Roundcube/rcube_db_oracle.php263
4 files changed, 957 insertions, 23 deletions
diff --git a/lib/ext/Roundcube/rcube_db.php b/lib/ext/Roundcube/rcube_db.php
index a46df97..5a2ad03 100644
--- a/lib/ext/Roundcube/rcube_db.php
+++ b/lib/ext/Roundcube/rcube_db.php
@@ -50,6 +50,7 @@ class rcube_db
);
const DEBUG_LINE_LENGTH = 4096;
+ const DEFAULT_QUOTE = '`';
/**
* Factory, returns driver-specific instance of the class
@@ -68,6 +69,7 @@ class rcube_db
'sybase' => 'mssql',
'dblib' => 'mssql',
'mysqli' => 'mysql',
+ 'oci' => 'oracle',
);
$driver = isset($driver_map[$driver]) ? $driver_map[$driver] : $driver;
@@ -128,6 +130,20 @@ class rcube_db
return $this->dbh;
}
+ // connect to database
+ if ($dbh = $this->conn_create($dsn)) {
+ $this->dbh = $dbh;
+ $this->dbhs[$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);
@@ -149,6 +165,8 @@ class rcube_db
// don't throw exceptions or warnings
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT);
+
+ $this->conn_configure($dsn, $dbh);
}
catch (Exception $e) {
$this->db_error = true;
@@ -161,11 +179,7 @@ class rcube_db
return null;
}
- $this->dbh = $dbh;
- $this->dbhs[$mode] = $dbh;
- $this->db_mode = $mode;
- $this->db_connected = true;
- $this->conn_configure($dsn, $dbh);
+ return $dbh;
}
/**
@@ -237,8 +251,12 @@ class rcube_db
// 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._]+)'.$end.'?\s+/i';
+
// find tables involved in this query
- if (preg_match_all('/(?:^|\s)(from|update|into|join)\s+'.$this->options['identifier_start'].'?([a-z0-9._]+)'.$this->options['identifier_end'].'?\s+/i', $query, $matches, PREG_SET_ORDER)) {
+ if (preg_match_all($regex, $query, $matches, PREG_SET_ORDER)) {
foreach ($matches as $m) {
$table = $m[2];
@@ -407,6 +425,9 @@ class rcube_db
$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;
@@ -430,10 +451,19 @@ class rcube_db
$query = str_replace('??', '?', $query);
$query = rtrim($query, " \t\n\r\0\x0B;");
+ // 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->last_result = null;
$this->db_error_msg = null;
// send query
@@ -443,9 +473,52 @@ class rcube_db
$result = $this->handle_error($query);
}
- $this->last_result = $result;
+ return $this->last_result = $result;
+ }
- return $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, $pos)) {
+ if ($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++;
+ }
+ }
+
+ // replace escaped quote back to normal, see self::quote()
+ $query = str_replace($quote.$quote, $quote, $query);
+
+ return $query;
}
/**
@@ -482,7 +555,9 @@ class rcube_db
public function affected_rows($result = null)
{
if ($result || ($result === null && ($result = $this->last_result))) {
- return $result->rowCount();
+ if ($result !== true) {
+ return $result->rowCount();
+ }
}
return 0;
@@ -498,7 +573,7 @@ class rcube_db
*/
public function num_rows($result = null)
{
- if ($result || ($result === null && ($result = $this->last_result))) {
+ if (($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 ' . $m[1], PDO::FETCH_NUM);
@@ -574,7 +649,9 @@ class rcube_db
protected function _fetch_row($result, $mode)
{
if ($result || ($result === null && ($result = $this->last_result))) {
- return $result->fetch($mode);
+ if ($result !== true) {
+ return $result->fetch($mode);
+ }
}
return false;
@@ -644,6 +721,63 @@ class rcube_db
}
/**
+ * 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();
+ }
+
+ /**
* Formats input so it can be safely used in a query
*
* @param mixed $input Value to quote
@@ -676,8 +810,13 @@ class rcube_db
'bool' => PDO::PARAM_BOOL,
'integer' => PDO::PARAM_INT,
);
+
$type = isset($map[$type]) ? $map[$type] : PDO::PARAM_STR;
- return strtr($this->dbh->quote($input, $type), array('?' => '??')); // escape ?
+
+ return strtr($this->dbh->quote($input, $type),
+ // escape ? and `
+ array('?' => '??', self::DEFAULT_QUOTE => self::DEFAULT_QUOTE.self::DEFAULT_QUOTE)
+ );
}
return 'NULL';
@@ -916,15 +1055,20 @@ class rcube_db
/**
* Return correct name for a specific database table
*
- * @param string $table Table name
+ * @param string $table Table name
+ * @param bool $quoted Quote table identifier
*
* @return string Translated table name
*/
- public function table_name($table)
+ public function table_name($table, $quoted = false)
{
// add prefix to the table name if configured
if (($prefix = $this->options['table_prefix']) && strpos($table, $prefix) !== 0) {
- return $prefix . $table;
+ $table = $prefix . $table;
+ }
+
+ if ($quoted) {
+ $table = $this->quote_identifier($table);
}
return $table;
diff --git a/lib/ext/Roundcube/rcube_db_mysql.php b/lib/ext/Roundcube/rcube_db_mysql.php
index e6417cc..400813d 100644
--- a/lib/ext/Roundcube/rcube_db_mysql.php
+++ b/lib/ext/Roundcube/rcube_db_mysql.php
@@ -38,13 +38,6 @@ class rcube_db_mysql extends rcube_db
*/
public function __construct($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
diff --git a/lib/ext/Roundcube/rcube_db_oci8.php b/lib/ext/Roundcube/rcube_db_oci8.php
new file mode 100644
index 0000000..a55ba04
--- /dev/null
+++ b/lib/ext/Roundcube/rcube_db_oci8.php
@@ -0,0 +1,534 @@
+<?php
+
+/**
+ +-----------------------------------------------------------------------+
+ | This file is part of the Roundcube Webmail client |
+ | Copyright (C) 2011-2014, Kolab Systems AG |
+ | |
+ | 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 database functions |
+ | for Oracle database using OCI8 extension |
+ +-----------------------------------------------------------------------+
+ | Author: Aleksander Machniak <machniak@kolabsys.com> |
+ +-----------------------------------------------------------------------+
+*/
+
+/**
+ * Database independent query interface
+ *
+ * @package Framework
+ * @subpackage Database
+ */
+class rcube_db_oci8 extends rcube_db
+{
+ public $db_provider = 'oracle';
+
+
+ /**
+ * Create connection instance
+ */
+ protected function conn_create($dsn)
+ {
+ // Get database specific connection options
+ $dsn_options = $this->dsn_options($dsn);
+
+ $function = $this->db_pconn ? 'oci_pconnect' : 'oci_connect';
+
+ if (!function_exists($function)) {
+ $this->db_error = true;
+ $this->db_error_msg = 'OCI8 extension not loaded. See http://php.net/manual/en/book.oci8.php';
+
+ rcube::raise_error(array('code' => 500, 'type' => 'db',
+ 'line' => __LINE__, 'file' => __FILE__,
+ 'message' => $this->db_error_msg), true, false);
+
+ return;
+ }
+
+ // connect
+ $dbh = @$function($dsn['username'], $dsn['password'], $dsn_options['database'], $dsn_options['charset']);
+
+ if (!$dbh) {
+ $error = oci_error();
+ $this->db_error = true;
+ $this->db_error_msg = $error['message'];
+
+ rcube::raise_error(array('code' => 500, 'type' => 'db',
+ 'line' => __LINE__, 'file' => __FILE__,
+ 'message' => $this->db_error_msg), true, false);
+
+ return;
+ }
+
+ // configure session
+ $this->conn_configure($dsn, $dbh);
+
+ return $dbh;
+ }
+
+ /**
+ * Driver-specific configuration of database connection
+ *
+ * @param array $dsn DSN for DB connections
+ * @param PDO $dbh Connection handler
+ */
+ protected function conn_configure($dsn, $dbh)
+ {
+ $init_queries = array(
+ "ALTER SESSION SET nls_date_format = 'YYYY-MM-DD'",
+ "ALTER SESSION SET nls_timestamp_format = 'YYYY-MM-DD HH24:MI:SS'",
+ );
+
+ foreach ($init_queries as $query) {
+ $stmt = oci_parse($dbh, $query);
+ oci_execute($stmt);
+ }
+ }
+
+ /**
+ * Connection state checker
+ *
+ * @return boolean True if in connected state
+ */
+ public function is_connected()
+ {
+ return empty($this->dbh) ? false : $this->db_connected;
+ }
+
+ /**
+ * Execute the query
+ */
+ protected function query_execute($query)
+ {
+ // destroy reference to previous result
+ $this->last_result = null;
+ $this->db_error_msg = null;
+
+ // prepare query
+ $result = oci_parse($this->dbh, $query);
+ $mode = $this->in_transaction ? OCI_NO_AUTO_COMMIT : OCI_COMMIT_ON_SUCCESS;
+
+ if (!@oci_execute($result, $mode)) {
+ $result = $this->handle_error($query, $result);
+ }
+
+ return $this->last_result = $result;
+ }
+
+ /**
+ * Helper method to handle DB errors.
+ * This by default logs the error but could be overriden by a driver implementation
+ *
+ * @param string Query that triggered the error
+ * @return mixed Result to be stored and returned
+ */
+ protected function handle_error($query, $result = null)
+ {
+ $error = oci_error(is_resource($result) ? $result : $this->dbh);
+
+ // @TODO: Find error codes for key errors
+ if (empty($this->options['ignore_key_errors']) || !in_array($error['code'], array('23000', '23505'))) {
+ $this->db_error = true;
+ $this->db_error_msg = sprintf('[%s] %s', $error['code'], $error['message']);
+
+ rcube::raise_error(array('code' => 500, 'type' => 'db',
+ 'line' => __LINE__, 'file' => __FILE__,
+ 'message' => $this->db_error_msg . " (SQL Query: $query)"
+ ), true, false);
+ }
+
+ 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 = null)
+ {
+ if (!$this->db_connected || $this->db_mode == 'r' || empty($table)) {
+ return false;
+ }
+
+ $sequence = $this->quote_identifier($this->sequence_name($table));
+ $result = $this->query("SELECT $sequence.currval FROM dual");
+ $result = $this->fetch_array($result);
+
+ return $result[0] ?: false;
+ }
+
+ /**
+ * 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 = $this->last_result))) {
+ return oci_num_rows($result);
+ }
+
+ 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)
+ {
+ // not implemented
+ return false;
+ }
+
+ /**
+ * 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, OCI_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, OCI_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 = $this->last_result))) {
+ return oci_fetch_array($result, $mode + OCI_RETURN_NULLS + OCI_RETURN_LOBS);
+ }
+
+ return false;
+ }
+
+ /**
+ * Formats input so it can be safely used in a query
+ * PDO_OCI does not implement quote() method
+ *
+ * @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);
+ }
+
+ switch ($type) {
+ case 'bool':
+ case 'integer':
+ return intval($input);
+ default:
+ return "'" . strtr($input, array(
+ '?' => '??',
+ "'" => "''",
+ rcube_db::DEFAULT_QUOTE => rcube_db::DEFAULT_QUOTE . rcube_db::DEFAULT_QUOTE
+ )) . "'";
+ }
+ }
+
+ /**
+ * Return correct name for a specific database sequence
+ *
+ * @param string $table Table name
+ *
+ * @return string Translated sequence name
+ */
+ protected function sequence_name($table)
+ {
+ // Note: we support only one sequence per table
+ // Note: The sequence name must be <table_name>_seq
+ $sequence = $table . '_seq';
+
+ // modify sequence name if prefix is configured
+ if ($prefix = $this->options['table_prefix']) {
+ return $prefix . $sequence;
+ }
+
+ return $sequence;
+ }
+
+ /**
+ * 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 'UPPER(' . $this->quote_identifier($column) . ') LIKE UPPER(' . $this->quote($value) . ')';
+ }
+
+ /**
+ * 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)
+ {
+ if ($interval) {
+ $interval = intval($interval);
+ return "current_timestamp + INTERVAL '$interval' SECOND";
+ }
+
+ return "current_timestamp";
+ }
+
+ /**
+ * Return SQL statement to convert a field value into a unix timestamp
+ *
+ * @param string $field Field name
+ *
+ * @return string SQL statement to use in query
+ * @deprecated
+ */
+ public function unixtimestamp($field)
+ {
+ return "(($field - to_date('1970-01-01','YYYY-MM-DD')) * 60 * 60 * 24)";
+ }
+
+ /**
+ * Adds TOP (LIMIT,OFFSET) clause 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)
+ {
+ $limit = intval($limit);
+ $offset = intval($offset);
+ $end = $offset + $limit;
+
+ // @TODO: Oracle 12g has better OFFSET support
+
+ if (!$offset) {
+ $query = "SELECT * FROM ($query) a WHERE rownum <= $end";
+ }
+ else {
+ $query = "SELECT * FROM (SELECT a.*, rownum as rn FROM ($query) a WHERE rownum <= $end) b WHERE rn > $offset";
+ }
+
+ return $query;
+ }
+
+ /**
+ * Parse SQL file and fix table names according to table prefix
+ */
+ protected function fix_table_names($sql)
+ {
+ if (!$this->options['table_prefix']) {
+ return $sql;
+ }
+
+ $sql = parent::fix_table_names($sql);
+
+ // replace sequence names, and other Oracle-specific commands
+ $sql = preg_replace_callback('/((SEQUENCE ["]?)([^" \r\n]+)/',
+ array($this, 'fix_table_names_callback'),
+ $sql
+ );
+
+ $sql = preg_replace_callback(
+ '/([ \r\n]+["]?)([^"\' \r\n\.]+)(["]?\.nextval)/',
+ array($this, 'fix_table_names_seq_callback'),
+ $sql
+ );
+
+ return $sql;
+ }
+
+ /**
+ * Preg_replace callback for fix_table_names()
+ */
+ protected function fix_table_names_seq_callback($matches)
+ {
+ return $matches[1] . $this->options['table_prefix'] . $matches[2] . $matches[3];
+ }
+
+ /**
+ * Returns connection options from DSN array
+ */
+ protected function dsn_options($dsn)
+ {
+ $params = array();
+
+ if ($dsn['hostspec']) {
+ $host = $dsn['hostspec'];
+ if ($dsn['port']) {
+ $host .= ':' . $dsn['port'];
+ }
+
+ $params['database'] = $host . '/' . $dsn['database'];
+ }
+
+ $params['charset'] = 'UTF8';
+
+ return $params;
+ }
+
+ /**
+ * Execute the given SQL script
+ *
+ * @param string SQL queries to execute
+ *
+ * @return boolen True on success, False on error
+ */
+ public function exec_script($sql)
+ {
+ $sql = $this->fix_table_names($sql);
+ $buff = '';
+ $body = false;
+
+ foreach (explode("\n", $sql) as $line) {
+ $tok = strtolower(trim($line));
+ if (preg_match('/^--/', $line) || $tok == '') {
+ continue;
+ }
+
+ $buff .= $line . "\n";
+
+ // detect PL/SQL function bodies, don't break on semicolon
+ if ($body && $tok == 'end;') {
+ $body = false;
+ }
+ else if (!$body && $tok == 'begin') {
+ $body = true;
+ }
+
+ if (!$body && substr($tok, -1) == ';') {
+ $this->query($buff);
+ $buff = '';
+ if ($this->db_error) {
+ break;
+ }
+ }
+ }
+
+ return !$this->db_error;
+ }
+
+ /**
+ * 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->in_transaction = true;
+ }
+
+ /**
+ * 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;
+ }
+
+ $this->debug('COMMIT TRANSACTION');
+
+ if ($result = @oci_commit($this->dbh)) {
+ $this->in_transaction = true;
+ }
+ else {
+ $this->handle_error('COMMIT');
+ }
+
+ return $this->last_result = $result;
+ }
+
+ /**
+ * 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;
+ }
+
+ $this->debug('ROLLBACK TRANSACTION');
+
+ if ($result = @oci_rollback($this->dbh)) {
+ $this->in_transaction = false;
+ }
+ else {
+ $this->handle_error('ROLLBACK');
+ }
+
+ return $this->last_result = $this->dbh->rollBack();
+ }
+}
diff --git a/lib/ext/Roundcube/rcube_db_oracle.php b/lib/ext/Roundcube/rcube_db_oracle.php
new file mode 100644
index 0000000..ddd351e
--- /dev/null
+++ b/lib/ext/Roundcube/rcube_db_oracle.php
@@ -0,0 +1,263 @@
+<?php
+
+/**
+ +-----------------------------------------------------------------------+
+ | This file is part of the Roundcube Webmail client |
+ | Copyright (C) 2011-2014, Kolab Systems AG |
+ | |
+ | 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 |
+ | for Oracle database |
+ +-----------------------------------------------------------------------+
+ | Author: Aleksander Machniak <machniak@kolabsys.com> |
+ +-----------------------------------------------------------------------+
+*/
+
+/**
+ * Database independent query interface
+ * This is a wrapper for the PHP PDO
+ *
+ * @package Framework
+ * @subpackage Database
+ */
+class rcube_db_oracle extends rcube_db
+{
+ public $db_provider = 'oracle';
+
+ /**
+ * 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("ALTER SESSION SET nls_date_format = 'YYYY-MM-DD'");
+ $dbh->query("ALTER SESSION SET nls_timestamp_format = 'YYYY-MM-DD HH24:MI:SS'");
+ }
+
+ /**
+ * 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 = null)
+ {
+ if (!$this->db_connected || $this->db_mode == 'r' || empty($table)) {
+ return false;
+ }
+
+ $sequence = $this->quote_identifier($this->sequence_name($table));
+ $result = $dbh->query("SELECT $sequence.currval FROM dual");
+
+ return $result ? $result->fetchColumn() : false;
+ }
+
+ /**
+ * Formats input so it can be safely used in a query
+ * PDO_OCI does not implement quote() method
+ *
+ * @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);
+ }
+
+ switch ($type) {
+ case 'bool':
+ case 'integer':
+ return intval($input);
+ default:
+ return "'" . strtr($input, array(
+ '?' => '??',
+ "'" => "''",
+ rcube_db::DEFAULT_QUOTE => rcube_db::DEFAULT_QUOTE . rcube_db::DEFAULT_QUOTE
+ )) . "'";
+ }
+ }
+
+ /**
+ * Return correct name for a specific database sequence
+ *
+ * @param string $table Table name
+ *
+ * @return string Translated sequence name
+ */
+ protected function sequence_name($table)
+ {
+ // Note: we support only one sequence per table
+ // Note: The sequence name must be <table_name>_seq
+ $sequence = $table . '_seq';
+
+ // modify sequence name if prefix is configured
+ if ($prefix = $this->options['table_prefix']) {
+ return $prefix . $sequence;
+ }
+
+ return $sequence;
+ }
+
+ /**
+ * 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 'UPPER(' . $this->quote_identifier($column) . ') LIKE UPPER(' . $this->quote($value) . ')';
+ }
+
+ /**
+ * 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)
+ {
+ if ($interval) {
+ $interval = intval($interval);
+ return "current_timestamp + INTERVAL '$interval' SECOND";
+ }
+
+ return "current_timestamp";
+ }
+
+ /**
+ * Return SQL statement to convert a field value into a unix timestamp
+ *
+ * @param string $field Field name
+ *
+ * @return string SQL statement to use in query
+ * @deprecated
+ */
+ public function unixtimestamp($field)
+ {
+ return "(($field - to_date('1970-01-01','YYYY-MM-DD')) * 60 * 60 * 24)";
+ }
+
+ /**
+ * Adds TOP (LIMIT,OFFSET) clause 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)
+ {
+ $limit = intval($limit);
+ $offset = intval($offset);
+ $end = $offset + $limit;
+
+ // @TODO: Oracle 12g has better OFFSET support
+
+ $orderby = stristr($query, 'ORDER BY');
+ $select = substr($query, 0, stripos($query, 'FROM'));
+ $offset += 1;
+
+ if ($orderby !== false) {
+ $query = trim(substr($query, 0, -1 * strlen($orderby)));
+ }
+ else {
+ // it shouldn't happen, paging without sorting has not much sense
+ // @FIXME: I don't know how to build paging query without ORDER BY
+ $orderby = "ORDER BY 1";
+ }
+
+ $query = preg_replace('/^SELECT\s/i', '', $query);
+ $query = "$select FROM (SELECT ROW_NUMBER() OVER ($orderby) AS row_number, $query)"
+ . " WHERE row_number BETWEEN $offset AND $end";
+
+ return $query;
+ }
+
+ /**
+ * Parse SQL file and fix table names according to table prefix
+ */
+ protected function fix_table_names($sql)
+ {
+ if (!$this->options['table_prefix']) {
+ return $sql;
+ }
+
+ $sql = parent::fix_table_names($sql);
+
+ // replace sequence names, and other Oracle-specific commands
+ $sql = preg_replace_callback('/((SEQUENCE ["]?)([^" \r\n]+)/',
+ array($this, 'fix_table_names_callback'),
+ $sql
+ );
+
+ $sql = preg_replace_callback(
+ '/([ \r\n]+["]?)([^"\' \r\n\.]+)(["]?\.nextval)/',
+ array($this, 'fix_table_names_seq_callback'),
+ $sql
+ );
+
+ return $sql;
+ }
+
+ /**
+ * Preg_replace callback for fix_table_names()
+ */
+ protected function fix_table_names_seq_callback($matches)
+ {
+ return $matches[1] . $this->options['table_prefix'] . $matches[2] . $matches[3];
+ }
+
+ /**
+ * Returns PDO DSN string from DSN array
+ */
+ protected function dsn_string($dsn)
+ {
+ $params = array();
+ $result = 'oci:';
+
+ if ($dsn['hostspec']) {
+ $host = $dsn['hostspec'];
+ if ($dsn['port']) {
+ $host .= ':' . $dsn['port'];
+ }
+
+ $dsn['database'] = $host . '/' . $dsn['database'];
+ }
+
+ if ($dsn['database']) {
+ $params[] = 'dbname=' . $dsn['database'];
+ }
+
+ $params['charset'] = 'UTF8';
+
+ if (!empty($params)) {
+ $result .= implode(';', $params);
+ }
+
+ return $result;
+ }
+}