<?php

/*

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

 * Copyright (C) 2006-2008 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(

  'type' => 'alpha'

  // 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

);

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 .= ( $short ) ? $keywords[$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') )

{

  $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');

// 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');

?>