--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/program/lib/Roundcube/rcube_db_sqlite.php	Thu Jan 04 15:52:31 2018 -0500
@@ -0,0 +1,161 @@
+<?php
+
+/**
+ +-----------------------------------------------------------------------+
+ | This file is part of the Roundcube Webmail client                     |
+ | Copyright (C) 2005-2012, 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(array('code' => 500, 'type' => 'db',
+                        'line' => __LINE__, 'file' => __FILE__,
+                        'message' => $this->db_error_msg), true, false);
+                }
+            }
+        }
+    }
+
+    /**
+     * 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)
+    {
+        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) : 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)
+    {
+        $q = $this->query('SELECT sql FROM sqlite_master WHERE type = ? AND name = ?',
+            array('table', $table));
+
+        $columns = array();
+
+        if ($sql = $this->fetch_array($q)) {
+            $sql       = $sql[0];
+            $start_pos = strpos($sql, '(');
+            $end_pos   = strrpos($sql, ')');
+            $sql       = substr($sql, $start_pos+1, $end_pos-$start_pos-1);
+            $lines     = explode(',', $sql);
+
+            foreach ($lines as $line) {
+                $line = explode(' ', trim($line));
+
+                if ($line[0] && strpos($line[0], '--') !== 0) {
+                    $column = $line[0];
+                    $columns[] = trim($column, '"');
+                }
+            }
+        }
+
+        return $columns;
+    }
+
+    /**
+     * Build DSN string for PDO constructor
+     */
+    protected function dsn_string($dsn)
+    {
+        return $dsn['phptype'] . ':' . $dsn['database'];
+    }
+}