562 lines
13 KiB
PHP
562 lines
13 KiB
PHP
<?php
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/**
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* ownCloud
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*
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* @author Michael Gapczynski
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* @author Christian Berendt
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* @copyright 2012 Michael Gapczynski mtgap@owncloud.com
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* @copyright 2013 Christian Berendt berendt@b1-systems.de
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace OC\Files\Storage;
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set_include_path(get_include_path() . PATH_SEPARATOR .
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\OC_App::getAppPath('files_external') . '/3rdparty/aws-sdk-php');
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require 'aws-autoloader.php';
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use Aws\S3\S3Client;
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use Aws\S3\Exception\S3Exception;
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class AmazonS3 extends \OC\Files\Storage\Common {
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/**
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* @var \Aws\S3\S3Client
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*/
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private $connection;
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/**
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* @var string
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*/
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private $bucket;
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/**
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* @var array
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*/
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private static $tmpFiles = array();
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/**
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* @var bool
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*/
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private $test = false;
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/**
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* @var int
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*/
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private $timeout = 15;
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/**
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* @param string $path
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*/
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private function normalizePath($path) {
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$path = trim($path, '/');
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if (!$path) {
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$path = '.';
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}
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return $path;
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}
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private function testTimeout() {
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if ($this->test) {
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sleep($this->timeout);
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}
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}
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private function cleanKey($path) {
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if ($path === '.') {
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return '/';
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}
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return $path;
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}
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public function __construct($params) {
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if (!isset($params['key']) || !isset($params['secret']) || !isset($params['bucket'])) {
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throw new \Exception("Access Key, Secret and Bucket have to be configured.");
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}
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$this->id = 'amazon::' . $params['key'] . md5($params['secret']);
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$this->bucket = $params['bucket'];
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$scheme = ($params['use_ssl'] === 'false') ? 'http' : 'https';
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$this->test = isset($params['test']);
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$this->timeout = ( ! isset($params['timeout'])) ? 15 : $params['timeout'];
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$params['region'] = ( ! isset($params['region']) || $params['region'] === '' ) ? 'eu-west-1' : $params['region'];
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$params['hostname'] = ( !isset($params['hostname']) || $params['hostname'] === '' ) ? 's3.amazonaws.com' : $params['hostname'];
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if (!isset($params['port']) || $params['port'] === '') {
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$params['port'] = ($params['use_ssl'] === 'false') ? 80 : 443;
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}
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$base_url = $scheme.'://'.$params['hostname'].':'.$params['port'].'/';
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$this->connection = S3Client::factory(array(
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'key' => $params['key'],
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'secret' => $params['secret'],
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'base_url' => $base_url,
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'region' => $params['region']
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));
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if (!$this->connection->isValidBucketName($this->bucket)) {
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throw new \Exception("The configured bucket name is invalid.");
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}
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if (!$this->connection->doesBucketExist($this->bucket)) {
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try {
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$result = $this->connection->createBucket(array(
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'Bucket' => $this->bucket
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));
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$this->connection->waitUntilBucketExists(array(
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'Bucket' => $this->bucket,
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'waiter.interval' => 1,
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'waiter.max_attempts' => 15
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));
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$this->testTimeout();
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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throw new \Exception("Creation of bucket failed.");
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}
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}
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if (!$this->file_exists('.')) {
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$result = $this->connection->putObject(array(
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'Bucket' => $this->bucket,
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'Key' => $this->cleanKey('.'),
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'Body' => '',
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'ContentType' => 'httpd/unix-directory',
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'ContentLength' => 0
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));
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$this->testTimeout();
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}
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}
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public function mkdir($path) {
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$path = $this->normalizePath($path);
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if ($this->is_dir($path)) {
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return false;
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}
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try {
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$result = $this->connection->putObject(array(
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'Bucket' => $this->bucket,
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'Key' => $path . '/',
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'Body' => '',
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'ContentType' => 'httpd/unix-directory',
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'ContentLength' => 0
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));
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$this->testTimeout();
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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return true;
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}
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public function file_exists($path) {
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$path = $this->normalizePath($path);
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if (!$path) {
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$path = '.';
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} else if ($path != '.' && $this->is_dir($path)) {
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$path .= '/';
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}
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try {
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$result = $this->connection->doesObjectExist(
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$this->bucket,
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$this->cleanKey($path)
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);
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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return $result;
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}
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public function rmdir($path) {
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$path = $this->normalizePath($path);
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if (!$this->file_exists($path)) {
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return false;
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}
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// Since there are no real directories on S3, we need
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// to delete all objects prefixed with the path.
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$objects = $this->connection->listObjects(array(
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'Bucket' => $this->bucket,
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'Prefix' => $path . '/'
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));
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try {
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$result = $this->connection->deleteObjects(array(
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'Bucket' => $this->bucket,
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'Objects' => $objects['Contents']
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));
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$this->testTimeout();
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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return true;
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}
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public function opendir($path) {
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$path = $this->normalizePath($path);
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if ($path === '.') {
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$path = '';
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} else if ($path) {
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$path .= '/';
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}
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try {
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$files = array();
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$result = $this->connection->getIterator('ListObjects', array(
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'Bucket' => $this->bucket,
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'Delimiter' => '/',
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'Prefix' => $path
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), array('return_prefixes' => true));
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foreach ($result as $object) {
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$file = basename(
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isset($object['Key']) ? $object['Key'] : $object['Prefix']
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);
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if ($file != basename($path)) {
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$files[] = $file;
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}
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}
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\OC\Files\Stream\Dir::register('amazons3' . $path, $files);
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return opendir('fakedir://amazons3' . $path);
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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}
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public function stat($path) {
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$path = $this->normalizePath($path);
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try {
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if ($this->is_dir($path) && $path != '.') {
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$path .= '/';
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}
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$result = $this->connection->headObject(array(
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'Bucket' => $this->bucket,
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'Key' => $this->cleanKey($path)
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));
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$stat = array();
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$stat['size'] = $result['ContentLength'] ? $result['ContentLength'] : 0;
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if ($result['Metadata']['lastmodified']) {
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$stat['mtime'] = strtotime($result['Metadata']['lastmodified']);
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} else {
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$stat['mtime'] = strtotime($result['LastModified']);
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}
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$stat['atime'] = time();
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return $stat;
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} catch(S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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}
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public function filetype($path) {
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$path = $this->normalizePath($path);
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try {
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if ($path != '.' && $this->connection->doesObjectExist($this->bucket, $path)) {
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return 'file';
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}
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if ($path != '.') {
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$path .= '/';
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}
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if ($this->connection->doesObjectExist($this->bucket, $this->cleanKey($path))) {
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return 'dir';
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}
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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return false;
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}
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public function unlink($path) {
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$path = $this->normalizePath($path);
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if ( $this->is_dir($path) ) {
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return $this->rmdir($path);
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}
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try {
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$result = $this->connection->deleteObject(array(
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'Bucket' => $this->bucket,
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'Key' => $this->cleanKey($path)
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));
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$this->testTimeout();
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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return true;
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}
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public function fopen($path, $mode) {
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$path = $this->normalizePath($path);
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switch ($mode) {
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case 'r':
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case 'rb':
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$tmpFile = \OC_Helper::tmpFile();
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self::$tmpFiles[$tmpFile] = $path;
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try {
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$result = $this->connection->getObject(array(
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'Bucket' => $this->bucket,
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'Key' => $this->cleanKey($path),
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'SaveAs' => $tmpFile
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));
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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return fopen($tmpFile, 'r');
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case 'w':
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case 'wb':
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case 'a':
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case 'ab':
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case 'r+':
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case 'w+':
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case 'wb+':
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case 'a+':
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case 'x':
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case 'x+':
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case 'c':
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case 'c+':
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if (strrpos($path, '.') !== false) {
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$ext = substr($path, strrpos($path, '.'));
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} else {
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$ext = '';
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}
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$tmpFile = \OC_Helper::tmpFile($ext);
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\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
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if ($this->file_exists($path)) {
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$source = $this->fopen($path, 'r');
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file_put_contents($tmpFile, $source);
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}
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self::$tmpFiles[$tmpFile] = $path;
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return fopen('close://' . $tmpFile, $mode);
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}
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return false;
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}
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public function getMimeType($path) {
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$path = $this->normalizePath($path);
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if ($this->is_dir($path)) {
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return 'httpd/unix-directory';
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} else if ($this->file_exists($path)) {
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try {
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$result = $this->connection->headObject(array(
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'Bucket' => $this->bucket,
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'Key' => $this->cleanKey($path)
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));
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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return $result['ContentType'];
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}
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return false;
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}
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public function touch($path, $mtime = null) {
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$path = $this->normalizePath($path);
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$metadata = array();
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if (!is_null($mtime)) {
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$metadata = array('lastmodified' => $mtime);
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}
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try {
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if ($this->file_exists($path)) {
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if ($this->is_dir($path) && $path != '.') {
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$path .= '/';
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}
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$result = $this->connection->copyObject(array(
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'Bucket' => $this->bucket,
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'Key' => $this->cleanKey($path),
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'Metadata' => $metadata,
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'CopySource' => $this->bucket . '/' . $path
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));
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$this->testTimeout();
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} else {
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$result = $this->connection->putObject(array(
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'Bucket' => $this->bucket,
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'Key' => $this->cleanKey($path),
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'Metadata' => $metadata
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));
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$this->testTimeout();
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}
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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return true;
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}
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public function copy($path1, $path2) {
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$path1 = $this->normalizePath($path1);
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$path2 = $this->normalizePath($path2);
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if ($this->is_file($path1)) {
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try {
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$result = $this->connection->copyObject(array(
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'Bucket' => $this->bucket,
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'Key' => $this->cleanKey($path2),
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'CopySource' => $this->bucket . '/' . $path1
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));
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$this->testTimeout();
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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} else {
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if ($this->file_exists($path2)) {
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return false;
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}
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try {
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$result = $this->connection->copyObject(array(
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'Bucket' => $this->bucket,
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'Key' => $path2 . '/',
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'CopySource' => $this->bucket . '/' . $path1 . '/'
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));
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$this->testTimeout();
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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$dh = $this->opendir($path1);
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if(is_resource($dh)) {
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while (($file = readdir($dh)) !== false) {
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if ($file === '.' || $file === '..') {
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continue;
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}
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$source = $path1 . '/' . $file;
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$target = $path2 . '/' . $file;
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$this->copy($source, $target);
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}
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}
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}
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return true;
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}
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public function rename($path1, $path2) {
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$path1 = $this->normalizePath($path1);
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$path2 = $this->normalizePath($path2);
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if ($this->is_file($path1)) {
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if ($this->copy($path1, $path2) === false) {
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return false;
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}
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if ($this->unlink($path1) === false) {
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$this->unlink($path2);
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return false;
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}
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} else {
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if ($this->file_exists($path2)) {
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return false;
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}
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if ($this->copy($path1, $path2) === false) {
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return false;
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}
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if ($this->rmdir($path1) === false) {
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$this->rmdir($path2);
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return false;
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}
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}
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return true;
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}
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public function test() {
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$test = $this->connection->getBucketAcl(array(
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'Bucket' => $this->bucket,
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));
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if (isset($test) && !is_null($test->getPath('Owner/ID'))) {
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return true;
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}
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return false;
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}
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public function getId() {
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return $this->id;
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}
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public function getConnection() {
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return $this->connection;
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}
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public function writeBack($tmpFile) {
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if (!isset(self::$tmpFiles[$tmpFile])) {
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return false;
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}
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try {
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$result= $this->connection->putObject(array(
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'Bucket' => $this->bucket,
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'Key' => $this->cleanKey(self::$tmpFiles[$tmpFile]),
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'SourceFile' => $tmpFile,
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'ContentType' => \OC_Helper::getMimeType($tmpFile),
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'ContentLength' => filesize($tmpFile)
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));
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$this->testTimeout();
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unlink($tmpFile);
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} catch (S3Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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}
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/**
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* check if curl is installed
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*/
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public static function checkDependencies() {
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if (function_exists('curl_init')) {
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return true;
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} else {
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return array('curl');
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}
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}
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}
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