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File Content: `sqlite.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 SQLite 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_sqlite extends rcube_db
{
    public $db_provider = 'sqlite';

    /**
     * Prepare connection
     */
    protected function conn_prepare($dsn)
    {
        // Create database file, required by PDO to exist on connection
        if (!empty($dsn['database']) && !file_exists($dsn['database'])) {
            $created = touch($dsn['database']);

            // File mode setting, for compat. with MDB2
            if (!empty($dsn['mode']) && $created) {
                chmod($dsn['database'], octdec($dsn['mode']));
            }
        }
    }

    /**
     * Configure connection, create database if not exists
     */
    protected function conn_configure($dsn, $dbh)
    {
        // Initialize database structure in file is empty
        if (!empty($dsn['database']) && !filesize($dsn['database'])) {
            $data = file_get_contents(RCUBE_INSTALL_PATH . 'SQL/sqlite.initial.sql');

            if (strlen($data)) {
                $this->debug('INITIALIZE DATABASE');

                $q = $dbh->exec($data);

                if ($q === false) {
                    $error = $dbh->errorInfo();
                    $this->db_error = true;
                    $this->db_error_msg = sprintf('[%s] %s', $error[1], $error[2]);

                    rcube::raise_error([
                            'code' => 500, 'type' => 'db',
                            'line' => __LINE__, 'file' => __FILE__,
                            'message' => $this->db_error_msg
                        ],
                        true, false
                    );
                }
            }
        }

        // Enable WAL mode to fix locking issues like #8035.
        $dbh->query("PRAGMA journal_mode = WAL");

        // Enable foreign keys (requires sqlite 3.6.19 compiled with FK support)
        $dbh->query("PRAGMA foreign_keys = ON");
    }

    /**
     * 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 "strftime('%s', $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)
    {
        $add = '';

        if ($interval) {
            $add = ($interval > 0 ? '+' : '') . intval($interval) . ' seconds';
        }

        return "datetime('now'" . ($add ? ", '$add'" : "") . ")";
    }

    /**
     * Returns list of tables in database
     *
     * @return array List of all tables of the current database
     */
    public function list_tables()
    {
        if ($this->tables === null) {
            $q = $this->query('SELECT name FROM sqlite_master'
                .' WHERE type = \'table\' ORDER BY name');

            $this->tables = $q ? $q->fetchAll(PDO::FETCH_COLUMN, 0) : [];
        }

        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)
    {
        $q = $this->query('PRAGMA table_info(?)', $table);

        return $q ? $q->fetchAll(PDO::FETCH_COLUMN, 1) : [];
    }

    /**
     * Build DSN string for PDO constructor
     */
    protected function dsn_string($dsn)
    {
        return $dsn['phptype'] . ':' . $dsn['database'];
    }

    /**
     * Returns driver-specific connection options
     *
     * @param array $dsn DSN parameters
     *
     * @return array Connection options
     */
    protected function dsn_options($dsn)
    {
        $result = parent::dsn_options($dsn);

        // Change the default timeout (60) to a smaller value
        $result[PDO::ATTR_TIMEOUT] = isset($dsn['timeout']) ? intval($dsn['timeout']) : 10;

        return $result;
    }
}
Name	Size	Permission
mssql.php	5636 bytes	0644
mysql.php	7701 bytes	0644
oracle.php	18196 bytes	0644
param.php	1921 bytes	0644
pgsql.php	10424 bytes	0644
sqlite.php	5304 bytes	0644
sqlsrv.php	3438 bytes	0644
File Content: sqlite.php

File Content: `sqlite.php`
