<?php
  
  class DatabaseSetupException extends \OC\HintException
  {
  }
  
  class OC_Setup {
  	static $dbSetupClasses = array(
  		'mysql' => '\OC\Setup\MySQL',
  		'pgsql' => '\OC\Setup\PostgreSQL',
  		'oci'   => '\OC\Setup\OCI',
  		'mssql' => '\OC\Setup\MSSQL',
  		'sqlite' => '\OC\Setup\Sqlite',
  		'sqlite3' => '\OC\Setup\Sqlite',
  	);
  
  	public static function getTrans(){
  		return OC_L10N::get('lib');
  	}
  
  	public static function install($options) {
  		$l = self::getTrans();
  
  		$error = array();
  		$dbtype = $options['dbtype'];
  
  		if(empty($options['adminlogin'])) {
  			$error[] = $l->t('Set an admin username.');
  		}
  		if(empty($options['adminpass'])) {
  			$error[] = $l->t('Set an admin password.');
  		}
  		if(empty($options['directory'])) {
  			$options['directory'] = OC::$SERVERROOT."/data";
  		}
  
  		if (!isset(self::$dbSetupClasses[$dbtype])) {
  			$dbtype = 'sqlite';
  		}
  
  		$class = self::$dbSetupClasses[$dbtype];
  		$dbSetup = new $class(self::getTrans(), 'db_structure.xml');
  		$error = array_merge($error, $dbSetup->validate($options));
  
  		if(count($error) != 0) {
  			return $error;
  		}
  
  		//no errors, good
  		$username = htmlspecialchars_decode($options['adminlogin']);
  		$password = htmlspecialchars_decode($options['adminpass']);
  		$datadir = htmlspecialchars_decode($options['directory']);
  
  		if (OC_Util::runningOnWindows()) {
  			$datadir = rtrim(realpath($datadir), '\\');
  		}
  
  		//use sqlite3 when available, otherise sqlite2 will be used.
  		if($dbtype=='sqlite' and class_exists('SQLite3')) {
  			$dbtype='sqlite3';
  		}
  
  		//generate a random salt that is used to salt the local user passwords
  		$salt = OC_Util::generateRandomBytes(30);
  		OC_Config::setValue('passwordsalt', $salt);
  
  		//write the config file
  		OC_Config::setValue('datadirectory', $datadir);
  		OC_Config::setValue('dbtype', $dbtype);
  		OC_Config::setValue('version', implode('.', OC_Util::getVersion()));
  		try {
  			$dbSetup->initialize($options);
  			$dbSetup->setupDatabase($username);
  		} catch (DatabaseSetupException $e) {
  			$error[] = array(
  				'error' => $e->getMessage(),
  				'hint' => $e->getHint()
  			);
  			return($error);
  		} catch (Exception $e) {
  			$error[] = array(
  				'error' => 'Error while trying to create admin user: ' . $e->getMessage(),
  				'hint' => ''
  			);
  			return($error);
  		}
  
  		//create the user and group
  		try {
  			OC_User::createUser($username, $password);
  		}
  		catch(Exception $exception) {
  			$error[] = $exception->getMessage();
  		}
  
  		if(count($error) == 0) {
  			OC_Appconfig::setValue('core', 'installedat', microtime(true));
  			OC_Appconfig::setValue('core', 'lastupdatedat', microtime(true));
  			OC_AppConfig::setValue('core', 'remote_core.css', '/core/minimizer.php');
  			OC_AppConfig::setValue('core', 'remote_core.js', '/core/minimizer.php');
  
  			OC_Group::createGroup('admin');
  			OC_Group::addToGroup($username, 'admin');
  			OC_User::login($username, $password);
  
  			//guess what this does
  			OC_Installer::installShippedApps();
  
  			//create htaccess files for apache hosts
  			if (isset($_SERVER['SERVER_SOFTWARE']) && strstr($_SERVER['SERVER_SOFTWARE'], 'Apache')) {
  				self::createHtaccess();
  			}
  
  			//and we are done
  			OC_Config::setValue('installed', true);
  		}
  
  		return $error;
  	}
  
  	/**
  	 * create .htaccess files for apache hosts
  	 */
  	private static function createHtaccess() {
  		$content = "<IfModule mod_fcgid.c>
  ";
  		$content.= "<IfModule mod_setenvif.c>
  ";
  		$content.= "<IfModule mod_headers.c>
  ";
  		$content.= "SetEnvIfNoCase ^Authorization$ \"(.+)\" XAUTHORIZATION=$1
  ";
  		$content.= "RequestHeader set XAuthorization %{XAUTHORIZATION}e env=XAUTHORIZATION
  ";
  		$content.= "</IfModule>
  ";
  		$content.= "</IfModule>
  ";
  		$content.= "</IfModule>
  ";
  		$content.= "ErrorDocument 403 ".OC::$WEBROOT."/core/templates/403.php
  ";//custom 403 error page
  		$content.= "ErrorDocument 404 ".OC::$WEBROOT."/core/templates/404.php
  ";//custom 404 error page
  		$content.= "<IfModule mod_php5.c>
  ";
  		$content.= "php_value upload_max_filesize 512M
  ";//upload limit
  		$content.= "php_value post_max_size 512M
  ";
  		$content.= "php_value memory_limit 512M
  ";
  		$content.= "php_value mbstring.func_overload 0
  ";
  		$content.= "<IfModule env_module>
  ";
  		$content.= "  SetEnv htaccessWorking true
  ";
  		$content.= "</IfModule>
  ";
  		$content.= "</IfModule>
  ";
  		$content.= "<IfModule mod_rewrite.c>
  ";
  		$content.= "RewriteEngine on
  ";
  		$content.= "RewriteRule .* - [env=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
  ";
  		$content.= "RewriteRule ^.well-known/host-meta /public.php?service=host-meta [QSA,L]
  ";
  		$content.= "RewriteRule ^.well-known/carddav /remote.php/carddav/ [R]
  ";
  		$content.= "RewriteRule ^.well-known/caldav /remote.php/caldav/ [R]
  ";
  		$content.= "RewriteRule ^apps/([^/]*)/(.*\.(css|php))$ index.php?app=$1&getfile=$2 [QSA,L]
  ";
  		$content.= "RewriteRule ^remote/(.*) remote.php [QSA,L]
  ";
  		$content.= "</IfModule>
  ";
  		$content.= "<IfModule mod_mime.c>
  ";
  		$content.= "AddType image/svg+xml svg svgz
  ";
  		$content.= "AddEncoding gzip svgz
  ";
  		$content.= "</IfModule>
  ";
  		$content.= "<IfModule dir_module>
  ";
  		$content.= "DirectoryIndex index.php index.html
  ";
  		$content.= "</IfModule>
  ";
  		$content.= "AddDefaultCharset utf-8
  ";
  		$content.= "Options -Indexes
  ";
  		@file_put_contents(OC::$SERVERROOT.'/.htaccess', $content); //supress errors in case we don't have permissions for it
  
  		self::protectDataDirectory();
  	}
  
  	public static function protectDataDirectory() {
  		//Require all denied
  		$now =  date('Y-m-d H:i:s');
  		$content = "# Generated by ownCloud on $now
  ";
  		$content.= "# line below if for Apache 2.4
  ";
  		$content.= "<ifModule mod_authz_core>
  ";
  		$content.= "Require all denied
  ";
  		$content.= "</ifModule>
  
  ";
  		$content.= "# line below if for Apache 2.2
  ";
  		$content.= "<ifModule !mod_authz_core>
  ";
  		$content.= "deny from all
  ";
  		$content.= "</ifModule>
  
  ";
  		$content.= "# section for Apache 2.2 and 2.4
  ";
  		$content.= "IndexIgnore *
  ";
  		file_put_contents(OC_Config::getValue('datadirectory', OC::$SERVERROOT.'/data').'/.htaccess', $content);
  		file_put_contents(OC_Config::getValue('datadirectory', OC::$SERVERROOT.'/data').'/index.html', '');
  	}
  
  	/**
  	 * @brief Post installation checks
  	 */
  	public static function postSetupCheck($params) {
  		// setup was successful -> webdav testing now
  		$l = self::getTrans();
  		if (OC_Util::isWebDAVWorking()) {
  			header("Location: ".OC::$WEBROOT.'/');
  		} else {
  
  			$error = $l->t('Your web server is not yet properly setup to allow files synchronization because the WebDAV interface seems to be broken.');
  			$hint = $l->t('Please double check the <a href=\'%s\'>installation guides</a>.',
  				\OC_Helper::linkToDocs('admin-install'));
  
  			OC_Template::printErrorPage($error, $hint);
  			exit();
  		}
  	}
  }