1 files changed, 538 insertions, 0 deletions
diff --git a/phpBB/phpbb/db/driver/firebird.php b/phpBB/phpbb/db/driver/firebird.php
new file mode 100644
index 0000000000..787c28b812
--- /dev/null
+++ b/phpBB/phpbb/db/driver/firebird.php
@@ -0,0 +1,538 @@
+<?php
+/**
+*
+* @package dbal
+* @copyright (c) 2005 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* Firebird/Interbase Database Abstraction Layer
+* Minimum Requirement is Firebird 2.1
+* @package dbal
+*/
+class phpbb_db_driver_firebird extends phpbb_db_driver
+{
+	var $last_query_text = '';
+	var $service_handle = false;
+	var $affected_rows = 0;
+	var $connect_error = '';
+
+	/**
+	* Connect to server
+	*/
+	function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false)
+	{
+		$this->persistency = $persistency;
+		$this->user = $sqluser;
+		$this->server = $sqlserver . (($port) ? ':' . $port : '');
+		$this->dbname = str_replace('\\', '/', $database);
+
+		// There are three possibilities to connect to an interbase db
+		if (!$this->server)
+		{
+			$use_database = $this->dbname;
+		}
+		else if (strpos($this->server, '//') === 0)
+		{
+			$use_database = $this->server . $this->dbname;
+		}
+		else
+		{
+			$use_database = $this->server . ':' . $this->dbname;
+		}
+
+		if ($this->persistency)
+		{
+			if (!function_exists('ibase_pconnect'))
+			{
+				$this->connect_error = 'ibase_pconnect function does not exist, is interbase extension installed?';
+				return $this->sql_error('');
+			}
+			$this->db_connect_id = @ibase_pconnect($use_database, $this->user, $sqlpassword, false, false, 3);
+		}
+		else
+		{
+			if (!function_exists('ibase_connect'))
+			{
+				$this->connect_error = 'ibase_connect function does not exist, is interbase extension installed?';
+				return $this->sql_error('');
+			}
+			$this->db_connect_id = @ibase_connect($use_database, $this->user, $sqlpassword, false, false, 3);
+		}
+
+		// Do not call ibase_service_attach if connection failed,
+		// otherwise error message from ibase_(p)connect call will be clobbered.
+		if ($this->db_connect_id && function_exists('ibase_service_attach') && $this->server)
+		{
+			$this->service_handle = @ibase_service_attach($this->server, $this->user, $sqlpassword);
+		}
+		else
+		{
+			$this->service_handle = false;
+		}
+
+		return ($this->db_connect_id) ? $this->db_connect_id : $this->sql_error('');
+	}
+
+	/**
+	* Version information about used database
+	* @param bool $raw if true, only return the fetched sql_server_version
+	* @param bool $use_cache forced to false for Interbase
+	* @return string sql server version
+	*/
+	function sql_server_info($raw = false, $use_cache = true)
+	{
+		/**
+		* force $use_cache false.  I didn't research why the caching code there is no caching code
+		* but I assume its because the IB extension provides a direct method to access it
+		* without a query.
+		*/
+
+		$use_cache = false;
+
+		if ($this->service_handle !== false && function_exists('ibase_server_info'))
+		{
+			return @ibase_server_info($this->service_handle, IBASE_SVC_SERVER_VERSION);
+		}
+
+		return ($raw) ? '2.1' : 'Firebird/Interbase';
+	}
+
+	/**
+	* SQL Transaction
+	* @access private
+	*/
+	function _sql_transaction($status = 'begin')
+	{
+		switch ($status)
+		{
+			case 'begin':
+				return true;
+			break;
+
+			case 'commit':
+				return @ibase_commit();
+			break;
+
+			case 'rollback':
+				return @ibase_rollback();
+			break;
+		}
+
+		return true;
+	}
+
+	/**
+	* Base query method
+	*
+	* @param	string	$query		Contains the SQL query which shall be executed
+	* @param	int		$cache_ttl	Either 0 to avoid caching or the time in seconds which the result shall be kept in cache
+	* @return	mixed				When casted to bool the returned value returns true on success and false on failure
+	*
+	* @access	public
+	*/
+	function sql_query($query = '', $cache_ttl = 0)
+	{
+		if ($query != '')
+		{
+			global $cache;
+
+			// EXPLAIN only in extra debug mode
+			if (defined('DEBUG'))
+			{
+				$this->sql_report('start', $query);
+			}
+
+			$this->last_query_text = $query;
+			$this->query_result = ($cache && $cache_ttl) ? $cache->sql_load($query) : false;
+			$this->sql_add_num_queries($this->query_result);
+
+			if ($this->query_result === false)
+			{
+				$array = array();
+				// We overcome Firebird's 32767 char limit by binding vars
+				if (strlen($query) > 32767)
+				{
+					if (preg_match('/^(INSERT INTO[^(]++)\\(([^()]+)\\) VALUES[^(]++\\((.*?)\\)$/s', $query, $regs))
+					{
+						if (strlen($regs[3]) > 32767)
+						{
+							preg_match_all('/\'(?:[^\']++|\'\')*+\'|[\d-.]+/', $regs[3], $vals, PREG_PATTERN_ORDER);
+
+							$inserts = $vals[0];
+							unset($vals);
+
+							foreach ($inserts as $key => $value)
+							{
+								if (!empty($value) && $value[0] === "'" && strlen($value) > 32769) // check to see if this thing is greater than the max + 'x2
+								{
+									$inserts[$key] = '?';
+									$array[] = str_replace("''", "'", substr($value, 1, -1));
+								}
+							}
+
+							$query = $regs[1] . '(' . $regs[2] . ') VALUES (' . implode(', ', $inserts) . ')';
+						}
+					}
+					else if (preg_match('/^(UPDATE ([\\w_]++)\\s+SET )([\\w_]++\\s*=\\s*(?:\'(?:[^\']++|\'\')*+\'|\\d+)(?:,\\s*[\\w_]++\\s*=\\s*(?:\'(?:[^\']++|\'\')*+\'|[\d-.]+))*+)\\s+(WHERE.*)$/s', $query, $data))
+					{
+						if (strlen($data[3]) > 32767)
+						{
+							$update = $data[1];
+							$where = $data[4];
+							preg_match_all('/(\\w++)\\s*=\\s*(\'(?:[^\']++|\'\')*+\'|[\d-.]++)/', $data[3], $temp, PREG_SET_ORDER);
+							unset($data);
+
+							$cols = array();
+							foreach ($temp as $value)
+							{
+								if (!empty($value[2]) && $value[2][0] === "'" && strlen($value[2]) > 32769) // check to see if this thing is greater than the max + 'x2
+								{
+									$array[] = str_replace("''", "'", substr($value[2], 1, -1));
+									$cols[] = $value[1] . '=?';
+								}
+								else
+								{
+									$cols[] = $value[1] . '=' . $value[2];
+								}
+							}
+
+							$query = $update . implode(', ', $cols) . ' ' . $where;
+							unset($cols);
+						}
+					}
+				}
+
+				if (!function_exists('ibase_affected_rows') && (preg_match('/^UPDATE ([\w_]++)\s+SET [\w_]++\s*=\s*(?:\'(?:[^\']++|\'\')*+\'|[\d-.]+)(?:,\s*[\w_]++\s*=\s*(?:\'(?:[^\']++|\'\')*+\'|[\d-.]+))*+\s+(WHERE.*)?$/s', $query, $regs) || preg_match('/^DELETE FROM ([\w_]++)\s*(WHERE\s*.*)?$/s', $query, $regs)))
+				{
+					$affected_sql = 'SELECT COUNT(*) as num_rows_affected FROM ' . $regs[1];
+					if (!empty($regs[2]))
+					{
+						$affected_sql .= ' ' . $regs[2];
+					}
+
+					if (!($temp_q_id = @ibase_query($this->db_connect_id, $affected_sql)))
+					{
+						return false;
+					}
+
+					$temp_result = @ibase_fetch_assoc($temp_q_id);
+					@ibase_free_result($temp_q_id);
+
+					$this->affected_rows = ($temp_result) ? $temp_result['NUM_ROWS_AFFECTED'] : false;
+				}
+
+				if (sizeof($array))
+				{
+					$p_query = @ibase_prepare($this->db_connect_id, $query);
+					array_unshift($array, $p_query);
+					$this->query_result = call_user_func_array('ibase_execute', $array);
+					unset($array);
+
+					if ($this->query_result === false)
+					{
+						$this->sql_error($query);
+					}
+				}
+				else if (($this->query_result = @ibase_query($this->db_connect_id, $query)) === false)
+				{
+					$this->sql_error($query);
+				}
+
+				if (defined('DEBUG'))
+				{
+					$this->sql_report('stop', $query);
+				}
+
+				if (!$this->transaction)
+				{
+					if (function_exists('ibase_commit_ret'))
+					{
+						@ibase_commit_ret();
+					}
+					else
+					{
+						// way cooler than ibase_commit_ret :D
+						@ibase_query('COMMIT RETAIN;');
+					}
+				}
+
+				if ($cache && $cache_ttl)
+				{
+					$this->open_queries[(int) $this->query_result] = $this->query_result;
+					$this->query_result = $cache->sql_save($this, $query, $this->query_result, $cache_ttl);
+				}
+				else if (strpos($query, 'SELECT') === 0 && $this->query_result)
+				{
+					$this->open_queries[(int) $this->query_result] = $this->query_result;
+				}
+			}
+			else if (defined('DEBUG'))
+			{
+				$this->sql_report('fromcache', $query);
+			}
+		}
+		else
+		{
+			return false;
+		}
+
+		return $this->query_result;
+	}
+
+	/**
+	* Build LIMIT query
+	*/
+	function _sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0)
+	{
+		$this->query_result = false;
+
+		$query = 'SELECT FIRST ' . $total . ((!empty($offset)) ? ' SKIP ' . $offset : '') . substr($query, 6);
+
+		return $this->sql_query($query, $cache_ttl);
+	}
+
+	/**
+	* Return number of affected rows
+	*/
+	function sql_affectedrows()
+	{
+		// PHP 5+ function
+		if (function_exists('ibase_affected_rows'))
+		{
+			return ($this->db_connect_id) ? @ibase_affected_rows($this->db_connect_id) : false;
+		}
+		else
+		{
+			return $this->affected_rows;
+		}
+	}
+
+	/**
+	* Fetch current row
+	*/
+	function sql_fetchrow($query_id = false)
+	{
+		global $cache;
+
+		if ($query_id === false)
+		{
+			$query_id = $this->query_result;
+		}
+
+		if ($cache && $cache->sql_exists($query_id))
+		{
+			return $cache->sql_fetchrow($query_id);
+		}
+
+		if ($query_id === false)
+		{
+			return false;
+		}
+
+		$row = array();
+		$cur_row = @ibase_fetch_object($query_id, IBASE_TEXT);
+
+		if (!$cur_row)
+		{
+			return false;
+		}
+
+		foreach (get_object_vars($cur_row) as $key => $value)
+		{
+			$row[strtolower($key)] = (is_string($value)) ? trim(str_replace(array("\\0", "\\n"), array("\0", "\n"), $value)) : $value;
+		}
+
+		return (sizeof($row)) ? $row : false;
+	}
+
+	/**
+	* Get last inserted id after insert statement
+	*/
+	function sql_nextid()
+	{
+		$query_id = $this->query_result;
+
+		if ($query_id !== false && $this->last_query_text != '')
+		{
+			if ($this->query_result && preg_match('#^INSERT[\t\n ]+INTO[\t\n ]+([a-z0-9\_\-]+)#i', $this->last_query_text, $tablename))
+			{
+				$sql = 'SELECT GEN_ID(' . $tablename[1] . '_gen, 0) AS new_id FROM RDB$DATABASE';
+
+				if (!($temp_q_id = @ibase_query($this->db_connect_id, $sql)))
+				{
+					return false;
+				}
+
+				$temp_result = @ibase_fetch_assoc($temp_q_id);
+				@ibase_free_result($temp_q_id);
+
+				return ($temp_result) ? $temp_result['NEW_ID'] : false;
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	* Free sql result
+	*/
+	function sql_freeresult($query_id = false)
+	{
+		global $cache;
+
+		if ($query_id === false)
+		{
+			$query_id = $this->query_result;
+		}
+
+		if ($cache && $cache->sql_exists($query_id))
+		{
+			return $cache->sql_freeresult($query_id);
+		}
+
+		if (isset($this->open_queries[(int) $query_id]))
+		{
+			unset($this->open_queries[(int) $query_id]);
+			return @ibase_free_result($query_id);
+		}
+
+		return false;
+	}
+
+	/**
+	* Escape string used in sql query
+	*/
+	function sql_escape($msg)
+	{
+		return str_replace(array("'", "\0"), array("''", ''), $msg);
+	}
+
+	/**
+	* Build LIKE expression
+	* @access private
+	*/
+	function _sql_like_expression($expression)
+	{
+		return $expression . " ESCAPE '\\'";
+	}
+
+	/**
+	* Build db-specific query data
+	* @access private
+	*/
+	function _sql_custom_build($stage, $data)
+	{
+		return $data;
+	}
+
+	function _sql_bit_and($column_name, $bit, $compare = '')
+	{
+		return 'BIN_AND(' . $column_name . ', ' . (1 << $bit) . ')' . (($compare) ? ' ' . $compare : '');
+	}
+
+	function _sql_bit_or($column_name, $bit, $compare = '')
+	{
+		return 'BIN_OR(' . $column_name . ', ' . (1 << $bit) . ')' . (($compare) ? ' ' . $compare : '');
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	function cast_expr_to_bigint($expression)
+	{
+		// Precision must be from 1 to 18
+		return 'CAST(' . $expression . ' as DECIMAL(18, 0))';
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	function cast_expr_to_string($expression)
+	{
+		return 'CAST(' . $expression . ' as VARCHAR(255))';
+	}
+
+	/**
+	* return sql error array
+	* @access private
+	*/
+	function _sql_error()
+	{
+		// Need special handling here because ibase_errmsg returns
+		// connection errors, however if the interbase extension
+		// is not installed then ibase_errmsg does not exist and
+		// we cannot call it.
+		if (function_exists('ibase_errmsg'))
+		{
+			$msg = @ibase_errmsg();
+			if (!$msg)
+			{
+				$msg = $this->connect_error;
+			}
+		}
+		else
+		{
+			$msg = $this->connect_error;
+		}
+		return array(
+			'message'	=> $msg,
+			'code'		=> (@function_exists('ibase_errcode') ? @ibase_errcode() : '')
+		);
+	}
+
+	/**
+	* Close sql connection
+	* @access private
+	*/
+	function _sql_close()
+	{
+		if ($this->service_handle !== false)
+		{
+			@ibase_service_detach($this->service_handle);
+		}
+
+		return @ibase_close($this->db_connect_id);
+	}
+
+	/**
+	* Build db-specific report
+	* @access private
+	*/
+	function _sql_report($mode, $query = '')
+	{
+		switch ($mode)
+		{
+			case 'start':
+			break;
+
+			case 'fromcache':
+				$endtime = explode(' ', microtime());
+				$endtime = $endtime[0] + $endtime[1];
+
+				$result = @ibase_query($this->db_connect_id, $query);
+				while ($void = @ibase_fetch_object($result, IBASE_TEXT))
+				{
+					// Take the time spent on parsing rows into account
+				}
+				@ibase_free_result($result);
+
+				$splittime = explode(' ', microtime());
+				$splittime = $splittime[0] + $splittime[1];
+
+				$this->sql_report('record_fromcache', $query, $endtime, $splittime);
+
+			break;
+		}
+	}
+}