<?php

/*

 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between

 * Copyright (C) 2006-2009 Dan Fuhry

 * Installation package

 * common.php - Installer common functions

 *

 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied

 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.

 */

// Our version number. This needs to be changed for any custom releases.

$installer_version = array(

	'version' => '1.1.8',

	'type' => 'beta'

	// If type is set to "rc", "beta", or "alpha", optionally another version number can be issued with the key 'sub':

	// 'sub' => '3' will produce Enano 1.1.1a3 / Enano 1.1.1 alpha 3

);

// Database schema version

// This is incremented each time a change to the database structure is made.

// If it doesn't match the version in the DB, the user will be asked to upgrade.

// This must match includes/common.php!

function installer_enano_version($long = false)

{

	global $installer_version;

	static $keywords = array(

		'alpha' => 'a',

		'beta' => 'b',

		'RC' => 'rc'

		);

	$v = $installer_version['version'];

	if ( isset($installer_version['sub']) )

	{

		$v .= ( !$long ) ? $keywords[$installer_version['type']] : " {$installer_version['type']} ";

		$v .= $installer_version['sub'];

	}

	return $v;

}

// Determine Enano root directory

if ( !defined('ENANO_ROOT') )

{

	$enano_root = dirname(dirname(dirname(__FILE__)));

	if ( preg_match('#/repo$#', $enano_root) && file_exists("$enano_root/../.enanodev") )

	{

		$enano_root = preg_replace('#/repo$#', '', $enano_root);

	}

	define('ENANO_ROOT', $enano_root);

}

chdir(ENANO_ROOT);

// Determine our scriptPath

if ( isset($_SERVER['REQUEST_URI']) && !defined('scriptPath') )

{

	// Use reverse-matching to determine where the REQUEST_URI overlaps the Enano root.

	$requri = $_SERVER['REQUEST_URI'];

	if ( isset($_SERVER['PATH_INFO']) && !preg_match('/index\.php$/', $_SERVER['PATH_INFO']) )

	{

		$requri = preg_replace(';' . preg_quote($_SERVER['PATH_INFO']) . '$;', '', $requri);

	}

	if ( !preg_match('/\.php$/', $requri) )

	{

		// user requested http://foo/enano as opposed to http://foo/enano/index.php

		$requri .= '/index.php';

	}

	$sp = dirname($_SERVER['REQUEST_URI']);

	if ( $sp == '/' || $sp == '\\' )

	{

		$sp = '';

	}

	$sp = preg_replace('#/install$#', '', $sp);

	define('scriptPath', $sp);

}

// is Enano already installed?

@include(ENANO_ROOT . '/config.php');

if ( defined('ENANO_INSTALLED') && defined('ENANO_DANGEROUS') && !isset($_GET['debug_warn_php4']) )

{

	$title = 'Installation locked';

	require('includes/common.php');

	$template->header();

	echo '<p>The installer has detected that an installation of Enano already exists on your server. You MUST delete config.php if you wish to reinstall Enano.</p>';

	$template->footer();

	exit();

}

if ( !function_exists('microtime_float') )

{

	function microtime_float()

	{

		list($usec, $sec) = explode(" ", microtime());

		return ((float)$usec + (float)$sec);

	}

}

define('IN_ENANO_INSTALL', 1);

require_once(ENANO_ROOT . '/install/includes/ui.php');

require_once(ENANO_ROOT . '/includes/functions.php');

require_once(ENANO_ROOT . '/includes/json.php');

require_once(ENANO_ROOT . '/includes/constants.php');

require_once(ENANO_ROOT . '/includes/rijndael.php');

require_once(ENANO_ROOT . '/includes/hmac.php');

// If we have at least PHP 5, load json2

if ( version_compare(PHP_VERSION, '5.0.0', '>=') )

{

	require_once(ENANO_ROOT . '/includes/json2.php');

}

strip_magic_quotes_gpc();

// Build a list of available languages

$dir = @opendir( ENANO_ROOT . '/language' );

if ( !$dir )

	die('CRITICAL: could not open language directory');

$languages = array();

// Use the old PHP4-compatible JSON decoder

$json = new Services_JSON(SERVICES_JSON_LOOSE_TYPE);

while ( $dh = @readdir($dir) )

{

	if ( $dh == '.' || $dh == '..' )

		continue;

	if ( file_exists( ENANO_ROOT . "/language/$dh/meta.json" ) )

	{

		// Found a language directory, determine metadata

		$meta = @file_get_contents( ENANO_ROOT . "/language/$dh/meta.json" );

		if ( empty($meta) )

			// Could not read metadata file, continue silently

			continue;

		$meta = $json->decode($meta);

		if ( isset($meta['lang_name_english']) && isset($meta['lang_name_native']) && isset($meta['lang_code']) )

		{

			$languages[$meta['lang_code']] = array(

					'name' => $meta['lang_name_native'],

					'name_eng' => $meta['lang_name_english'],

					'dir' => $dh

				);

		}

	}

}

if ( count($languages) < 1 )

{

	die('The Enano installer couldn\'t find any languages in the language/ folder. Enano needs at least one language in this folder to load and install properly.');

}

// List of available DB drivers

$supported_drivers = array('mysql', 'postgresql');

// Divert to CLI loader if running from CLI

if ( isset($argc) && isset($argv) )

{

	if ( is_int($argc) && is_array($argv) && !isset($_SERVER['REQUEST_URI']) )

	{

		define('ENANO_CLI', '');

	}

}

?>