nextcloud私有云一键搭建脚本

nextcloud私有云
官方提供的一键搭建脚本

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/**
 * Nextcloud setup wizard
 *
 * @author Frank Karlitschek
 * @copyright 2012 Frank Karlitschek [email protected]
 * @author Lukas Reschke
 * @copyright 2013-2015 Lukas Reschke [email protected]
 * @copyright 2016 Lukas Reschke [email protected]
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or any later version.
 *
 * This library 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 AFFERO GENERAL PUBLIC LICENSE for more details.
 *
 * You should have received a copy of the GNU Affero General Public
 * License along with this library.  If not, see .
 *
 */

/**
 * Please copy this file into your webserver root and open it with a browser. The setup wizard checks the dependency, downloads the newest Nextcloud version, unpacks it and redirects to the Nextcloud first run wizard.
 */

// Nextcloud version with possible values from https://download.nextcloud.com/server/releases/*.zip
define('NC_VERSION', 'latest');

// init
ob_start();
error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);
ini_set('display_errors', 1);
@set_time_limit(0);

/**
 * Setup class with a few helper functions
 */
class Setup {

	private static $requirements = array(
		array(
			'classes' => array(
				'ZipArchive' => 'zip',
				'DOMDocument' => 'dom',
				'XMLWriter' => 'XMLWriter'
			),
			'functions' => array(
				'xml_parser_create' => 'libxml',
				'mb_detect_encoding' => 'mb multibyte',
				'ctype_digit' => 'ctype',
				'json_encode' => 'JSON',
				'gd_info' => 'GD',
				'gzencode' => 'zlib',
				'iconv' => 'iconv',
				'simplexml_load_string' => 'SimpleXML',
				'hash' => 'HASH Message Digest Framework',
				'curl_init' => 'curl',
			),
			'defined' => array(
				'PDO::ATTR_DRIVER_NAME' => 'PDO'
			),
		)
	);


	/**
	* Checks if all the Nextcloud dependencies are installed
	* @return string with error messages
	*/
	static public function checkDependencies() {
		$error = '';
		$missingDependencies = array();

		// do we have PHP 7.2.0 or newer?
		if(version_compare(PHP_VERSION, '7.2.0', '<')) {
			$error.='PHP 7.2.0 is required. Please ask your server administrator to update PHP to version 7.2.0 or higher.
';
		}

		// running oC on windows is unsupported since 8.1
		if(substr(PHP_OS, 0, 3) === "WIN") {
			$error.='Nextcloud Server does not support Microsoft Windows.
';
		}

		foreach (self::$requirements[0]['classes'] as $class => $module) {
			if (!class_exists($class)) {
				$missingDependencies[] = array($module);
			}
		}
		foreach (self::$requirements[0]['functions'] as $function => $module) {
			if (!function_exists($function)) {
				$missingDependencies[] = array($module);
			}
		}
		foreach (self::$requirements[0]['defined'] as $defined => $module) {
			if (!defined($defined)) {
				$missingDependencies[] = array($module);
			}
		}

		if(!empty($missingDependencies)) {
			$error .= 'The following PHP modules are required to use Nextcloud:
';
		}
		foreach($missingDependencies as $missingDependency) {
			$error .= '
'.$missingDependency[0].'
';
		}
		if(!empty($missingDependencies)) {
			$error .= '
Please contact your server administrator to install the missing modules.
';
		}

		// do we have write permission?
		if(!is_writable('.')) {
			$error.='Can\'t write to the current directory. Please fix this by giving the webserver user write access to the directory.
';
		}

		return($error);
	}


	/**
	* Check the cURL version
	* @return bool status of CURLOPT_CERTINFO implementation
	*/
	static public function isCertInfoAvailable() {
		$curlDetails =  curl_version();
		return version_compare($curlDetails['version'], '7.19.1') != -1;
	}

	/**
	* Performs the Nextcloud install.
	* @return string with error messages
	*/
	static public function install() {
		$error = '';
		$directory = trim($_GET['directory']);

		// Test if folder already exists
		if(file_exists('./'.$directory.'/status.php')) {
			return 'The selected folder seems to already contain a Nextcloud installation. - You cannot use this script to update existing installations.';
		}

		// downloading latest release
		if (!file_exists('nc.zip')) {
			$error .= Setup::getFile('https://download.nextcloud.com/server/releases/'.NC_VERSION.'.zip','nc.zip');
		}

		// unpacking into nextcloud folder
		$zip = new ZipArchive;
		$res = $zip->open('nc.zip');
		if ($res==true) {
			// Extract it to the tmp dir
			$nextcloud_tmp_dir = 'tmp-nextcloud'.time();
			$zip->extractTo($nextcloud_tmp_dir);
			$zip->close();

			// Move it to the folder
			if ($_GET['directory'] === '.') {
				foreach (array_diff(scandir($nextcloud_tmp_dir.'/nextcloud'), array('..', '.')) as $item) {
					rename($nextcloud_tmp_dir.'/nextcloud/'.$item, './'.$item);
				}
				rmdir($nextcloud_tmp_dir.'/nextcloud');
			} else {
				rename($nextcloud_tmp_dir.'/nextcloud', './'.$directory);
			}
			// Delete the tmp folder
			rmdir($nextcloud_tmp_dir);
		} else {
			$error.='unzip of nextcloud source file failed.
';
		}

		// deleting zip file
		$result=@unlink('nc.zip');
		if($result==false) $error.='deleting of nc.zip failed.
';
		return($error);
	}


	/**
	* Downloads a file and stores it in the local filesystem
	* @param string $url
	* @param string$path
	* @return string with error messages
	*/
	static public function getFile($url,$path) {
		$error='';

		$fp = fopen ($path, 'w+');
		$ch = curl_init($url);
		curl_setopt($ch, CURLOPT_TIMEOUT, 0);
		curl_setopt($ch, CURLOPT_FILE, $fp);
		curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
		if (Setup::isCertInfoAvailable()){
			curl_setopt($ch, CURLOPT_CERTINFO, TRUE);
		}
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, TRUE);
		$data=curl_exec($ch);
		$curlError=curl_error($ch);
		curl_close($ch);
		fclose($fp);

		if($data==false){
			$error.='download of Nextcloud source file failed.
'.$curlError;
		}
		return($error.$curlError);

	}


	/**
	* Shows the html header of the setup page
	*/
	static public function showHeader() {
		echo('
        
        
            
                
                
                
                
                
                
				
			

			
		');
	}


	/**
	* Shows the html footer of the setup page
	*/
	static public function showFooter() {
		echo('
		
Nextcloud – a safe home for all your data
		
		
		');
	}


	/**
	* Shows the html content part of the setup page
	* @param string $title
	* @param string $content
	* @param string $nextpage
	*/
	static public function showContent($title, $content, $nextpage=''){
		echo('
		
		

		

			




			

			
'.$title.'

			

			    
'.$content.'
				.$nextpage.'" />
		');

		if($nextpage === 2) {
			echo ('
Enter a single "." to install in the current directory, or enter a subdirectory to install to:
				');
		}
		if($nextpage === 3) {
			echo ('.$_GET['directory'].'" name="directory" />');
		}

		if($nextpage<>'') echo('');

		echo('
		
		

		
		
		');
	}

	/**
	 * JS function to check if user deleted this script
	 * N.B. We can't reload the page to check this with PHP:
	 * once script is deleted we end up with 404
	 */
	static public function showJsValidation(){
		echo '
		
		';
	}


	/**
	* Shows the welcome screen of the setup wizard
	*/
	static public function showWelcome() {
		$txt='Welcome to the Setup Wizard for
Nextcloud!

This wizard will:
1. Check the server dependencies
2. Download Nextcloud
3. Install Nextcloud in a few simple steps';
		Setup::showContent('Setup Wizard',$txt,1);
	}


	/**
	* Shows the check dependencies screen
	*/
	static public function showCheckDependencies() {
		$error=Setup::checkDependencies();
		if($error=='') {
			$txt='All Nextcloud dependencies found';
			Setup::showContent('Dependency check',$txt,2);
		}else{
			$txt='Dependencies not found.
'.$error;
			Setup::showContent('Dependency check',$txt);
		}
	}


	/**
	* Shows the install screen
	*/
	static public function showInstall() {
		$error=Setup::install();

		if($error=='') {
			$txt='Nextcloud is now installed';
			Setup::showContent('Success',$txt,3);
		}else{
			$txt='Nextcloud is NOT installed
'.$error;
			Setup::showContent('Error',$txt);
		}
	}

	/**
	 * Shows the redirect screen
	 */
	static public function showRedirect() {
		// delete own file
		@unlink(__FILE__);
		clearstatcache();
		if (file_exists(__FILE__)){
			Setup::showJsValidation();
			Setup::showContent(
				'Warning',
				'Failed to remove installer script. Please remove ' . __FILE__ . ' manually',
				3
			);
		} else {
			// redirect to Nextcloud
			header("Location: " . $_GET['directory']);
		}
	}

}


// read the step get variable
$step = isset($_GET['step']) ? $_GET['step'] : 0;

// show the header
Setup::showHeader();

// show the right step
if     ($step==0) Setup::showWelcome();
elseif ($step==1) Setup::showCheckDependencies();
elseif ($step==2) Setup::showInstall();
elseif ($step==3) Setup::showRedirect();
else  echo('Internal error. Please try again.');

// show the footer
Setup::showFooter();