<?php
// +-----------------------------------------------------------------------+
// | This file is part of Piwigo.                                          |
// |                                                                       |
// | For copyright and license information, please view the COPYING.txt    |
// | file that was distributed with this source code.                      |
// +-----------------------------------------------------------------------+

//----------------------------------------------------------- include
define('PHPWG_ROOT_PATH','./');

// @set_magic_quotes_runtime(0); // Disable magic_quotes_runtime
//
// addslashes to vars if magic_quotes_gpc is off this is a security
// precaution to prevent someone trying to break out of a SQL statement.
//
if( !@get_magic_quotes_gpc() )
{
  if( is_array($_POST) )
  {
    foreach($_POST as $k => $v)
    {
      if( is_array($_POST[$k]) )
      {
        foreach($_POST[$k] as $k2 => $v2)
        {
          $_POST[$k][$k2] = addslashes($v2);
        }
        @reset($_POST[$k]);
      }
      else
      {
        $_POST[$k] = addslashes($v);
      }
    }
    @reset($_POST);
  }

  if( is_array($_GET) )
  {
    foreach($_GET as $k => $v )
    {
      if( is_array($_GET[$k]) )
      {
        foreach($_GET[$k] as $k2 => $v2)
        {
          $_GET[$k][$k2] = addslashes($v2);
        }
        @reset($_GET[$k]);
      }
      else
      {
        $_GET[$k] = addslashes($v);
      }
    }
    @reset($_GET);
  }

  if( is_array($_COOKIE) )
  {
    foreach($_COOKIE as $k => $v)
    {
      if( is_array($_COOKIE[$k]) )
      {
        foreach($_COOKIE[$k] as $k2 => $v2)
        {
          $_COOKIE[$k][$k2] = addslashes($v2);
        }
        @reset($_COOKIE[$k]);
      }
      else
      {
        $_COOKIE[$k] = addslashes($v);
      }
    }
    @reset($_COOKIE);
  }
}

//----------------------------------------------------- variable initialization

define('DEFAULT_PREFIX_TABLE', 'piwigo_');

if (isset($_POST['install']))
{
  $prefixeTable = $_POST['prefix'];
}
else
{
  $prefixeTable = DEFAULT_PREFIX_TABLE;
}

include(PHPWG_ROOT_PATH . 'include/config_default.inc.php');
@include(PHPWG_ROOT_PATH. 'local/config/config.inc.php');
defined('PWG_LOCAL_DIR') or define('PWG_LOCAL_DIR', 'local/');

include(PHPWG_ROOT_PATH . 'include/functions.inc.php');
include(PHPWG_ROOT_PATH . 'include/template.class.php');

// download database config file if exists
check_input_parameter('dl', $_GET, false, '/^[a-f0-9]{32}$/');

if (!empty($_GET['dl']) && file_exists(PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl']))
{
  $filename = PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl'];
  header('Cache-Control: no-cache, must-revalidate');
  header('Pragma: no-cache');
  header('Content-Disposition: attachment; filename="database.inc.php"');
  header('Content-Transfer-Encoding: binary');
  header('Content-Length: '.filesize($filename));
  echo file_get_contents($filename);
  unlink($filename);
  exit();
} 

// Obtain various vars
$dbhost = (!empty($_POST['dbhost'])) ? $_POST['dbhost'] : 'localhost';
$dbuser = (!empty($_POST['dbuser'])) ? $_POST['dbuser'] : '';
$dbpasswd = (!empty($_POST['dbpasswd'])) ? $_POST['dbpasswd'] : '';
$dbname = (!empty($_POST['dbname'])) ? $_POST['dbname'] : '';

// dblayer
if (extension_loaded('mysqli'))
{
  $dblayer = 'mysqli';
}
else
{
  if (version_compare(PHP_VERSION, '7') >= 0)
  {
    fatal_error('PHP extension "mysqli" is not loaded');
  }

  if (!extension_loaded('mysql'))
  {
    fatal_error('No PHP extension installed for mysql, Piwigo needs one');
  }

  $dblayer = 'mysql';
}

$admin_name = (!empty($_POST['admin_name'])) ? $_POST['admin_name'] : '';
$admin_pass1 = (!empty($_POST['admin_pass1'])) ? $_POST['admin_pass1'] : '';
$admin_pass2 = (!empty($_POST['admin_pass2'])) ? $_POST['admin_pass2'] : '';
$admin_mail = (!empty($_POST['admin_mail'])) ? $_POST['admin_mail'] : '';

$is_newsletter_subscribe = true;
if (isset($_POST['install']))
{
  $is_newsletter_subscribe = isset($_POST['newsletter_subscribe']);
}

$infos = array();
$errors = array();

$config_file = PHPWG_ROOT_PATH.PWG_LOCAL_DIR .'config/database.inc.php';
if (@file_exists($config_file))
{
  include($config_file);
  // Is Piwigo already installed ?
  if (defined("PHPWG_INSTALLED"))
  {
    die('Piwigo is already installed');
  }
}

include(PHPWG_ROOT_PATH . 'include/constants.php');
include(PHPWG_ROOT_PATH . 'admin/include/functions.php');

include(PHPWG_ROOT_PATH . 'admin/include/languages.class.php');
$languages = new languages('utf-8');

if (isset($_GET['language']))
{
  $language = strip_tags($_GET['language']);
  
  if (!in_array($language, array_keys($languages->fs_languages)))
  {
    $language = PHPWG_DEFAULT_LANGUAGE;
  }
}
else
{
  $language = 'en_UK';
  // Try to get browser language
  foreach ($languages->fs_languages as $language_code => $fs_language)
  {
    if (substr($language_code,0,2) == @substr($_SERVER["HTTP_ACCEPT_LANGUAGE"],0,2))
    {
      $language = $language_code;
      break;
    }
  }
}

if ('fr_FR' == $language) {
  define('PHPWG_DOMAIN', 'fr.piwigo.org');
}
else if ('it_IT' == $language) {
  define('PHPWG_DOMAIN', 'it.piwigo.org');
}
else if ('de_DE' == $language) {
  define('PHPWG_DOMAIN', 'de.piwigo.org');
}
else if ('es_ES' == $language) {
  define('PHPWG_DOMAIN', 'es.piwigo.org');
}
else if ('pl_PL' == $language) {
  define('PHPWG_DOMAIN', 'pl.piwigo.org');
}
else if ('zh_CN' == $language) {
  define('PHPWG_DOMAIN', 'cn.piwigo.org');
}
else if ('ru_RU' == $language) {
  define('PHPWG_DOMAIN', 'ru.piwigo.org');
}
else if ('nl_NL' == $language) {
  define('PHPWG_DOMAIN', 'nl.piwigo.org');
}
else if ('tr_TR' == $language) {
  define('PHPWG_DOMAIN', 'tr.piwigo.org');
}
else if ('da_DK' == $language) {
  define('PHPWG_DOMAIN', 'da.piwigo.org');
}
else if ('pt_BR' == $language) {
  define('PHPWG_DOMAIN', 'br.piwigo.org');
}
else {
  define('PHPWG_DOMAIN', 'piwigo.org');
}
define('PHPWG_URL', 'https://'.PHPWG_DOMAIN);

load_language('common.lang', '', array('language' => $language, 'target_charset'=>'utf-8'));
load_language('admin.lang', '', array('language' => $language, 'target_charset'=>'utf-8'));
load_language('install.lang', '', array('language' => $language, 'target_charset'=>'utf-8'));

header('Content-Type: text/html; charset=UTF-8');
//------------------------------------------------- check php version
if (version_compare(PHP_VERSION, REQUIRED_PHP_VERSION, '<'))
{
  include(PHPWG_ROOT_PATH.'install/php5_apache_configuration.php');
}

//----------------------------------------------------- template initialization
$template = new Template(PHPWG_ROOT_PATH.'admin/themes', 'clear');
$template->set_filenames( array('install' => 'install.tpl') );
if (!isset($step))
{
  $step = 1;
}
//---------------------------------------------------------------- form analyze
include(PHPWG_ROOT_PATH .'include/dblayer/functions_'.$dblayer.'.inc.php');
include(PHPWG_ROOT_PATH . 'admin/include/functions_install.inc.php');
include(PHPWG_ROOT_PATH . 'admin/include/functions_upgrade.php');

if (isset($_POST['install']))
{
  install_db_connect($infos, $errors);
  pwg_db_check_charset();

  $webmaster = trim(preg_replace('/\s{2,}/', ' ', $admin_name));
  if (empty($webmaster))
  {
    $errors[] = l10n('enter a login for webmaster');
  }
  else if (preg_match( '/[\'"]/', $webmaster))
  {
    $errors[] = l10n('webmaster login can\'t contain characters \' or "');
  }
  if ($admin_pass1 != $admin_pass2 || empty($admin_pass1))
  {
    $errors[] = l10n('please enter your password again');
  }
  if (empty($admin_mail))
  {
    $errors[] = l10n('mail address must be like xxx@yyy.eee (example : jack@altern.org)');
  }
  else
  {
    $error_mail_address = validate_mail_address(null, $admin_mail);
    if (!empty($error_mail_address))
    {
      $errors[] = $error_mail_address;
    }
  }

  if ( count( $errors ) == 0 )
  {
    $step = 2;
    $file_content = '<?php
$conf[\'dblayer\'] = \''.$dblayer.'\';
$conf[\'db_base\'] = \''.$dbname.'\';
$conf[\'db_user\'] = \''.$dbuser.'\';
$conf[\'db_password\'] = \''.$dbpasswd.'\';
$conf[\'db_host\'] = \''.$dbhost.'\';

$prefixeTable = \''.$prefixeTable.'\';

define(\'PHPWG_INSTALLED\', true);
define(\'PWG_CHARSET\', \'utf-8\');
define(\'DB_CHARSET\', \'utf8\');
define(\'DB_COLLATE\', \'\');

?'.'>';

    @umask(0111);
    // writing the configuration file
    if ( !($fp = @fopen( $config_file, 'w' )))
    {
      // make sure nobody can list files of _data directory
      secure_directory(PHPWG_ROOT_PATH.$conf['data_location']);
      
      $tmp_filename = md5(uniqid(time()));
      $fh = @fopen( PHPWG_ROOT_PATH.$conf['data_location'] . 'pwg_' . $tmp_filename, 'w' );
      @fputs($fh, $file_content, strlen($file_content));
      @fclose($fh);

      $template->assign(
        array(
          'config_creation_failed' => true,
          'config_url' => 'install.php?dl='.$tmp_filename,
          'config_file_content' => $file_content,
          )
        );
    }
    @fputs($fp, $file_content, strlen($file_content));
    @fclose($fp);

    // tables creation, based on piwigo_structure.sql
    execute_sqlfile(
      PHPWG_ROOT_PATH.'install/piwigo_structure-mysql.sql',
      DEFAULT_PREFIX_TABLE,
      $prefixeTable,
      'mysql'
      );
    // We fill the tables with basic informations
    execute_sqlfile(
      PHPWG_ROOT_PATH.'install/config.sql',
      DEFAULT_PREFIX_TABLE,
      $prefixeTable,
      'mysql'
      );

    $query = '
INSERT INTO '.$prefixeTable.'config (param,value,comment) 
   VALUES (\'secret_key\',md5('.pwg_db_cast_to_text(DB_RANDOM_FUNCTION.'()').'),
   \'a secret key specific to the gallery for internal use\');';
    pwg_query($query);

    conf_update_param('piwigo_db_version', get_branch_from_version(PHPWG_VERSION));
    conf_update_param('gallery_title', pwg_db_real_escape_string(l10n('Just another Piwigo gallery')));

    conf_update_param(
      'page_banner',
      '<h1>%gallery_title%</h1>'."\n\n<p>".pwg_db_real_escape_string(l10n('Welcome to my photo gallery')).'</p>'
      );

    // fill languages table, only activate the current language
    $languages->perform_action('activate', $language);

    // fill $conf global array
    load_conf_from_db();

    // PWG_CHARSET is required for building the fs_themes array in the
    // themes class
    if (!defined('PWG_CHARSET'))
    {
      define('PWG_CHARSET', 'utf-8');
    }
    activate_core_themes();
    activate_core_plugins();

    $insert = array(
      'id' => 1,
      'galleries_url' => PHPWG_ROOT_PATH.'galleries/',
      );
    mass_inserts(SITES_TABLE, array_keys($insert), array($insert));

    // webmaster admin user
    $inserts = array(
      array(
        'id'           => 1,
        'username'     => $admin_name,
        'password'     => md5($admin_pass1),
        'mail_address' => $admin_mail,
        ),
      array(
        'id'           => 2,
        'username'     => 'guest',
        ),
      );
    mass_inserts(USERS_TABLE, array_keys($inserts[0]), $inserts);

    create_user_infos(array(1,2), array('language' => $language));

    // Available upgrades must be ignored after a fresh installation. To
    // make PWG avoid upgrading, we must tell it upgrades have already been
    // made.
    list($dbnow) = pwg_db_fetch_row(pwg_query('SELECT NOW();'));
    define('CURRENT_DATE', $dbnow);
    $datas = array();
    foreach (get_available_upgrade_ids() as $upgrade_id)
    {
      $datas[] = array(
        'id'          => $upgrade_id,
        'applied'     => CURRENT_DATE,
        'description' => 'upgrade included in installation',
        );
    }
    mass_inserts(
      UPGRADE_TABLE,
      array_keys($datas[0]),
      $datas
      );

    if ($is_newsletter_subscribe)
    {
      fetchRemote(
        get_newsletter_subscribe_base_url($language).$admin_mail,
        $result,
        array(),
        array('origin' => 'installation')
        );

      conf_update_param('show_newsletter_subscription', 'false');
    }
  }
}

//------------------------------------------------------ start template output
foreach ($languages->fs_languages as $language_code => $fs_language)
{
  if ($language == $language_code)
  {
    $template->assign('language_selection', $language_code);
  }
  $languages_options[$language_code] = $fs_language['name'];
}
$template->assign('language_options', $languages_options);

$template->assign(
  array(
    'T_CONTENT_ENCODING' => 'utf-8',
    'RELEASE' => PHPWG_VERSION,
    'F_ACTION' => 'install.php?language=' . $language,
    'F_DB_HOST' => $dbhost,
    'F_DB_USER' => $dbuser,
    'F_DB_NAME' => $dbname,
    'F_DB_PREFIX' => $prefixeTable,
    'F_ADMIN' => $admin_name,
    'F_ADMIN_EMAIL' => $admin_mail,
    'EMAIL' => '<span class="adminEmail">'.$admin_mail.'</span>',
    'F_NEWSLETTER_SUBSCRIBE' => $is_newsletter_subscribe,
    'L_INSTALL_HELP' => l10n('Need help ? Ask your question on <a href="%s">Piwigo message board</a>.', PHPWG_URL.'/forum'),
    ));

//------------------------------------------------------ errors & infos display
if ($step == 1)
{
  $template->assign('install', true);
}
else
{
  $infos[] = l10n('Congratulations, Piwigo installation is completed');

  if (isset($error_copy))
  {
    $errors[] = $error_copy;
  }
  else
  {
    session_set_save_handler('pwg_session_open',
      'pwg_session_close',
      'pwg_session_read',
      'pwg_session_write',
      'pwg_session_destroy',
      'pwg_session_gc'
    );
    if ( function_exists('ini_set') )
    {
      ini_set('session.use_cookies', $conf['session_use_cookies']);
      ini_set('session.use_only_cookies', $conf['session_use_only_cookies']);
      ini_set('session.use_trans_sid', intval($conf['session_use_trans_sid']));
      ini_set('session.cookie_httponly', 1);
    }
    session_name($conf['session_name']);
    session_set_cookie_params(0, cookie_path());
    register_shutdown_function('session_write_close');
    
    $user = build_user(1, true);
    log_user($user['id'], false);
    
    // email notification
    if (isset($_POST['send_credentials_by_mail']))
    {
      include_once(PHPWG_ROOT_PATH.'include/functions_mail.inc.php');
            
      $keyargs_content = array(
        get_l10n_args('Hello %s,', $admin_name),
        get_l10n_args('Welcome to your new installation of Piwigo!', ''),
        get_l10n_args('', ''),
        get_l10n_args('Here are your connection settings', ''),
        get_l10n_args('', ''),
        get_l10n_args('Link: %s', get_absolute_root_url()),
        get_l10n_args('Username: %s', $admin_name),
        get_l10n_args('Password: ********** (no copy by email)', ''),
        get_l10n_args('Email: %s', $admin_mail),
        get_l10n_args('', ''),
        get_l10n_args('Don\'t hesitate to consult our forums for any help: %s', PHPWG_URL),
        );
        
      pwg_mail(
        $admin_mail,
        array(
          'subject' => l10n('Just another Piwigo gallery'),
          'content' => l10n_args($keyargs_content),
          'content_format' => 'text/plain',
          )
        );
    }
  }
}
if (count($errors) != 0)
{
  $template->assign('errors', $errors);
}

if (count($infos) != 0 )
{
  $template->assign('infos', $infos);
}

//----------------------------------------------------------- html code display
$template->pparse('install');
?>
