From 2f8b1036da42ec3d15a51c6b17a473f9f4df71d3 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <bruederli@kolabsys.com>
Date: Sat, 07 Feb 2015 12:33:24 -0500
Subject: [PATCH] Bump version and copyright year
---
program/lib/Roundcube/rcube_db_oracle.php | 400 ++++++++++++++++++++++++++++++++++++++++++++++++++++----
1 files changed, 368 insertions(+), 32 deletions(-)
diff --git a/program/lib/Roundcube/rcube_db_oracle.php b/program/lib/Roundcube/rcube_db_oracle.php
index ddd351e..34e4e69 100644
--- a/program/lib/Roundcube/rcube_db_oracle.php
+++ b/program/lib/Roundcube/rcube_db_oracle.php
@@ -1,6 +1,6 @@
<?php
-/**
+/*
+-----------------------------------------------------------------------+
| This file is part of the Roundcube Webmail client |
| Copyright (C) 2011-2014, Kolab Systems AG |
@@ -10,8 +10,8 @@
| See the README file for a full license statement. |
| |
| PURPOSE: |
- | Database wrapper class that implements PHP PDO functions |
- | for Oracle database |
+ | Database wrapper class that implements database functions |
+ | for Oracle database using OCI8 extension |
+-----------------------------------------------------------------------+
| Author: Aleksander Machniak <machniak@kolabsys.com> |
+-----------------------------------------------------------------------+
@@ -19,7 +19,6 @@
/**
* Database independent query interface
- * This is a wrapper for the PHP PDO
*
* @package Framework
* @subpackage Database
@@ -27,6 +26,49 @@
class rcube_db_oracle 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 $dbh;
+ }
/**
* Driver-specific configuration of database connection
@@ -36,8 +78,135 @@
*/
protected function conn_configure($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'");
+ $init_queries = array(
+ "ALTER SESSION SET nls_date_format = 'YYYY-MM-DD'",
+ "ALTER SESSION SET nls_timestamp_format = 'YYYY-MM-DD HH24:MI:SS'",
+ );
+
+ foreach ($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 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)
+ {
+ $query = ltrim($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;
+ $args = array();
+
+ if (count($params)) {
+ while ($pos = strpos($query, '?', $pos)) {
+ if ($query[$pos+1] == '?') { // skip escaped '?'
+ $pos += 2;
+ }
+ else {
+ $val = $this->quote($params[$idx++]);
+
+ // long strings are not allowed inline, need to be parametrized
+ if (strlen($val) > 4000) {
+ $key = ':param' . (count($args) + 1);
+ $args[$key] = $params[$idx-1];
+ $val = $key;
+ }
+
+ unset($params[$idx-1]);
+ $query = substr_replace($query, $val, $pos, 1);
+ $pos += strlen($val);
+ }
+ }
+ }
+
+ // replace escaped '?' back to normal, see self::quote()
+ $query = str_replace('??', '?', $query);
+ $query = rtrim($query, " \t\n\r\0\x0B;");
+
+ // log query
+ $this->debug($query);
+
+ // destroy reference to previous result
+ $this->last_result = null;
+ $this->db_error_msg = null;
+
+ // prepare query
+ $result = @oci_parse($this->dbh, $query);
+ $mode = $this->in_transaction ? OCI_NO_AUTO_COMMIT : OCI_COMMIT_ON_SUCCESS;
+
+ if ($result) {
+ foreach (array_keys($args) as $param) {
+ oci_bind_by_name($result, $param, $args[$param], -1, SQLT_LNG);
+ }
+ }
+
+ // execute query
+ if (!$result || !@oci_execute($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;
}
/**
@@ -54,9 +223,83 @@
}
$sequence = $this->quote_identifier($this->sequence_name($table));
- $result = $dbh->query("SELECT $sequence.currval FROM dual");
+ $result = $this->query("SELECT $sequence.currval FROM dual");
+ $result = $this->fetch_array($result);
- return $result ? $result->fetchColumn() : false;
+ 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;
}
/**
@@ -177,22 +420,12 @@
// @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($orderby)));
+ if (!$offset) {
+ $query = "SELECT * FROM ($query) a WHERE rownum <= $end";
}
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";
+ $query = "SELECT * FROM (SELECT a.*, rownum as rn FROM ($query) a WHERE rownum <= $end) b WHERE rn > $offset";
}
-
- $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 $query;
}
@@ -232,12 +465,11 @@
}
/**
- * Returns PDO DSN string from DSN array
+ * Returns connection options from DSN array
*/
- protected function dsn_string($dsn)
+ protected function dsn_options($dsn)
{
$params = array();
- $result = 'oci:';
if ($dsn['hostspec']) {
$host = $dsn['hostspec'];
@@ -245,19 +477,123 @@
$host .= ':' . $dsn['port'];
}
- $dsn['database'] = $host . '/' . $dsn['database'];
- }
-
- if ($dsn['database']) {
- $params[] = 'dbname=' . $dsn['database'];
+ $params['database'] = $host . '/' . $dsn['database'];
}
$params['charset'] = 'UTF8';
- if (!empty($params)) {
- $result .= implode(';', $params);
+ 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 == '' || $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 $result;
+ return !$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;
+ }
+
+ $this->debug('ROLLBACK TRANSACTION');
+
+ if (@oci_rollback($this->dbh)) {
+ $this->in_transaction = false;
+ }
+ else {
+ $this->handle_error('ROLLBACK');
+ }
+
+ return $this->last_result = $this->dbh->rollBack();
}
}
--
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