You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
301 lines
8.8 KiB
PHP
301 lines
8.8 KiB
PHP
<?php
|
|
|
|
/**
|
|
+-----------------------------------------------------------------------+
|
|
| This file is part of the Roundcube Webmail client |
|
|
| |
|
|
| Copyright (C) The Roundcube Dev Team |
|
|
| |
|
|
| 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 PostgreSQL database |
|
|
+-----------------------------------------------------------------------+
|
|
| Author: Aleksander Machniak <alec@alec.pl> |
|
|
+-----------------------------------------------------------------------+
|
|
*/
|
|
|
|
/**
|
|
* Database independent query interface
|
|
* This is a wrapper for the PHP PDO
|
|
*
|
|
* @package Framework
|
|
* @subpackage Database
|
|
*/
|
|
class rcube_db_pgsql extends rcube_db
|
|
{
|
|
public $db_provider = 'postgres';
|
|
|
|
// See https://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-PARAMKEYWORDS
|
|
private static $libpq_connect_params = array("application_name", "sslmode", "sslcert", "sslkey", "sslrootcert", "sslcrl", "sslcompression", "service");
|
|
|
|
/**
|
|
* Object constructor
|
|
*
|
|
* @param string $db_dsnw DSN for read/write operations
|
|
* @param string $db_dsnr Optional DSN for read only operations
|
|
* @param bool $pconn Enables persistent connections
|
|
*/
|
|
public function __construct($db_dsnw, $db_dsnr = '', $pconn = false)
|
|
{
|
|
parent::__construct($db_dsnw, $db_dsnr, $pconn);
|
|
|
|
// use date/time input format with timezone spec.
|
|
$this->options['datetime_format'] = 'c';
|
|
}
|
|
|
|
/**
|
|
* 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'");
|
|
$dbh->query("SET DATESTYLE TO ISO");
|
|
|
|
// if ?schema= is set in dsn, set the search_path
|
|
if ($dsn['schema']) {
|
|
$dbh->query("SET search_path TO " . $this->quote($dsn['schema']));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 || $this->db_mode == 'r') {
|
|
return false;
|
|
}
|
|
|
|
if ($table) {
|
|
$table = $this->sequence_name($table);
|
|
}
|
|
|
|
$id = $this->dbh->lastInsertId($table);
|
|
|
|
return $id;
|
|
}
|
|
|
|
/**
|
|
* 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 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 "EXTRACT (EPOCH FROM $field)";
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
$add = ' ' . ($interval > 0 ? '+' : '-') . " interval '";
|
|
$add .= $interval > 0 ? intval($interval) : intval($interval) * -1;
|
|
$add .= " seconds'";
|
|
}
|
|
|
|
return "now()" . $add;
|
|
}
|
|
|
|
/**
|
|
* 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 $this->quote_identifier($column) . ' ILIKE ' . $this->quote($value);
|
|
}
|
|
|
|
/**
|
|
* Get database runtime variables
|
|
*
|
|
* @param string $varname Variable name
|
|
* @param mixed $default Default value if variable is not set
|
|
*
|
|
* @return mixed Variable value or default
|
|
*/
|
|
public function get_variable($varname, $default = null)
|
|
{
|
|
// There's a known case when max_allowed_packet is queried
|
|
// PostgreSQL doesn't have such limit, return immediately
|
|
if ($varname == 'max_allowed_packet') {
|
|
return rcube::get_instance()->config->get('db_' . $varname, $default);
|
|
}
|
|
|
|
$this->variables[$varname] = rcube::get_instance()->config->get('db_' . $varname);
|
|
|
|
if (!isset($this->variables)) {
|
|
$this->variables = array();
|
|
|
|
$result = $this->query('SHOW ALL');
|
|
|
|
while ($row = $this->fetch_array($result)) {
|
|
$this->variables[$row[0]] = $row[1];
|
|
}
|
|
}
|
|
|
|
return isset($this->variables[$varname]) ? $this->variables[$varname] : $default;
|
|
}
|
|
|
|
/**
|
|
* Returns list of tables in a database
|
|
*
|
|
* @return array List of all tables of the current database
|
|
*/
|
|
public function list_tables()
|
|
{
|
|
// get tables if not cached
|
|
if ($this->tables === null) {
|
|
if (($schema = $this->options['table_prefix']) && $schema[strlen($schema)-1] === '.') {
|
|
$add = " AND TABLE_SCHEMA = " . $this->quote(substr($schema, 0, -1));
|
|
}
|
|
else {
|
|
$add = " AND TABLE_SCHEMA NOT IN ('pg_catalog', 'information_schema')";
|
|
}
|
|
|
|
$q = $this->query("SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES"
|
|
. " WHERE TABLE_TYPE = 'BASE TABLE'" . $add
|
|
. " ORDER BY TABLE_NAME");
|
|
|
|
$this->tables = $q ? $q->fetchAll(PDO::FETCH_COLUMN, 0) : array();
|
|
}
|
|
|
|
return $this->tables;
|
|
}
|
|
|
|
/**
|
|
* Returns list of columns in database table
|
|
*
|
|
* @param string $table Table name
|
|
*
|
|
* @return array List of table cols
|
|
*/
|
|
public function list_cols($table)
|
|
{
|
|
$args = array($table);
|
|
|
|
if (($schema = $this->options['table_prefix']) && $schema[strlen($schema)-1] === '.') {
|
|
$add = " AND TABLE_SCHEMA = ?";
|
|
$args[] = substr($schema, 0, -1);
|
|
}
|
|
else {
|
|
$add = " AND TABLE_SCHEMA NOT IN ('pg_catalog', 'information_schema')";
|
|
}
|
|
|
|
$q = $this->query("SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS"
|
|
. " WHERE TABLE_NAME = ?" . $add, $args);
|
|
|
|
if ($q) {
|
|
return $q->fetchAll(PDO::FETCH_COLUMN, 0);
|
|
}
|
|
|
|
return array();
|
|
}
|
|
|
|
/**
|
|
* Returns PDO DSN string from DSN array
|
|
*
|
|
* @param array $dsn DSN parameters
|
|
*
|
|
* @return string DSN string
|
|
*/
|
|
protected function dsn_string($dsn)
|
|
{
|
|
$params = array();
|
|
$result = 'pgsql:';
|
|
|
|
if ($dsn['hostspec']) {
|
|
$params[] = 'host=' . $dsn['hostspec'];
|
|
}
|
|
else if ($dsn['socket']) {
|
|
$params[] = 'host=' . $dsn['socket'];
|
|
}
|
|
|
|
if ($dsn['port']) {
|
|
$params[] = 'port=' . $dsn['port'];
|
|
}
|
|
|
|
if ($dsn['database']) {
|
|
$params[] = 'dbname=' . $dsn['database'];
|
|
}
|
|
|
|
foreach (self::$libpq_connect_params as $param) {
|
|
if ($dsn[$param]) {
|
|
$params[] = $param . '=' . $dsn[$param];
|
|
}
|
|
}
|
|
|
|
if (!empty($params)) {
|
|
$result .= implode(';', $params);
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Parse SQL file and fix table names according to table prefix
|
|
*/
|
|
protected function fix_table_names($sql)
|
|
{
|
|
if (!$this->options['table_prefix']) {
|
|
return $sql;
|
|
}
|
|
|
|
$sql = parent::fix_table_names($sql);
|
|
|
|
// replace sequence names, and other postgres-specific commands
|
|
$sql = preg_replace_callback(
|
|
'/((SEQUENCE |RENAME TO |nextval\()["\']*)([^"\' \r\n]+)/',
|
|
array($this, 'fix_table_names_callback'),
|
|
$sql
|
|
);
|
|
|
|
return $sql;
|
|
}
|
|
}
|