/wp-content/plugins/w3-total-cache/lib/W3/Cdn/S3.php
https://github.com/EthanBlast/Glam-Star-Life · PHP · 452 lines · 374 code · 27 blank · 51 comment · 16 complexity · 5527f86d0e3dfd0daab2e05970bd99f2 MD5 · raw file
- <?php
- /**
- * Amazon S3 CDN engine
- */
- require_once W3TC_LIB_W3_DIR . '/Cdn/Base.php';
- if (!class_exists('S3')) {
- require_once W3TC_LIB_DIR . '/S3.php';
- }
- /**
- * Class W3_Cdn_S3
- */
- class W3_Cdn_S3 extends W3_Cdn_Base
- {
- /**
- * S3 object
- *
- * @var S3
- */
- var $_s3 = null;
-
- /**
- * gzip extension
- *
- * @var string
- */
- var $_gzip_extension = '.gzip';
-
- /**
- * Last error
- *
- * @var string
- */
- var $_last_error = '';
-
- /**
- * Inits S3 object
- *
- * @param string $error
- * @return boolean
- */
- function _init(&$error)
- {
- if (empty($this->_config['key'])) {
- $error = 'Empty access key';
-
- return false;
- }
-
- if (empty($this->_config['secret'])) {
- $error = 'Empty secret key';
-
- return false;
- }
-
- if (empty($this->_config['bucket'])) {
- $error = 'Empty bucket';
-
- return false;
- }
-
- $this->_s3 = & new S3($this->_config['key'], $this->_config['secret'], false);
-
- return true;
- }
-
- /**
- * Uploads files to S3
- *
- * @param array $files
- * @param array $results
- * @param boolean $force_rewrite
- * @return boolean
- */
- function upload($files, &$results, $force_rewrite = false)
- {
- $count = 0;
- $error = null;
-
- if (!$this->_init($error)) {
- $results = $this->get_results($files, W3TC_CDN_RESULT_HALT, $error);
- return false;
- }
-
- foreach ($files as $local_path => $remote_path) {
- $result = $this->_upload($local_path, $remote_path, $force_rewrite);
- $results[] = $result;
-
- if ($result['result'] == W3TC_CDN_RESULT_OK) {
- $count++;
- }
-
- if ($this->_config['compression'] && $this->may_gzip($remote_path)) {
- $remote_path_gzip = $remote_path . $this->_gzip_extension;
- $result = $this->_upload_gzip($local_path, $remote_path_gzip, $force_rewrite);
- $results[] = $result;
-
- if ($result['result'] == W3TC_CDN_RESULT_OK) {
- $count++;
- }
- }
- }
-
- return $count;
- }
-
- /**
- * Uploads single file to S3
- *
- * @param string $local_path
- * @param string $remote_path
- * @param boolean $force_rewrite
- * @return array
- */
- function _upload($local_path, $remote_path, $force_rewrite = false)
- {
- if (!file_exists($local_path)) {
- return $this->get_result($local_path, $remote_path, W3TC_CDN_RESULT_ERROR, 'Source file not found');
- }
-
- if (!$force_rewrite) {
- $info = @$this->_s3->getObjectInfo($this->_config['bucket'], $remote_path);
-
- if ($info) {
- $hash = @md5_file($local_path);
- $s3_hash = (isset($info['hash']) ? $info['hash'] : '');
-
- if ($hash === $s3_hash) {
- return $this->get_result($local_path, $remote_path, W3TC_CDN_RESULT_ERROR, 'Object already exists');
- }
- }
- }
-
- $headers = $this->get_headers($local_path);
- $result = @$this->_s3->putObjectFile($local_path, $this->_config['bucket'], $remote_path, S3::ACL_PUBLIC_READ, array(), $headers);
-
- return $this->get_result($local_path, $remote_path, ($result ? W3TC_CDN_RESULT_OK : W3TC_CDN_RESULT_ERROR), ($result ? 'OK' : 'Unable to put object'));
- }
-
- /**
- * Uploads gzip version of file
- *
- * @param string $local_path
- * @param string $remote_path
- * @param boolean $force_rewrite
- * @return array
- */
- function _upload_gzip($local_path, $remote_path, $force_rewrite = false)
- {
- if (!function_exists('gzencode')) {
- return $this->get_result($local_path, $remote_path, W3TC_CDN_RESULT_ERROR, "GZIP library doesn't exists");
- }
-
- if (!file_exists($local_path)) {
- return $this->get_result($local_path, $remote_path, W3TC_CDN_RESULT_ERROR, 'Source file not found');
- }
-
- $contents = @file_get_contents($local_path);
-
- if ($contents === false) {
- return $this->get_result($local_path, $remote_path, W3TC_CDN_RESULT_ERROR, 'Unable to read file');
- }
-
- $data = gzencode($contents);
-
- if (!$force_rewrite) {
- $info = @$this->_s3->getObjectInfo($this->_config['bucket'], $remote_path);
-
- if ($info) {
- $hash = md5($data);
- $s3_hash = (isset($info['hash']) ? $info['hash'] : '');
-
- if ($hash === $s3_hash) {
- return $this->get_result($local_path, $remote_path, W3TC_CDN_RESULT_ERROR, 'Object already exists');
- }
- }
- }
-
- $headers = $this->get_headers($local_path);
- $headers = array_merge($headers, array(
- 'Vary' => 'Accept-Encoding',
- 'Content-Encoding' => 'gzip'
- ));
-
- $result = @$this->_s3->putObjectString($data, $this->_config['bucket'], $remote_path, S3::ACL_PUBLIC_READ, array(), $headers);
-
- return $this->get_result($local_path, $remote_path, ($result ? W3TC_CDN_RESULT_OK : W3TC_CDN_RESULT_ERROR), ($result ? 'OK' : 'Unable to put object'));
- }
-
- /**
- * Deletes files from FTP
- *
- * @param array $files
- * @param array $results
- * @return boolean
- */
- function delete($files, &$results)
- {
- $error = null;
- $count = 0;
-
- if (!$this->_init($error)) {
- $results = $this->get_results($files, W3TC_CDN_RESULT_HALT, $error);
- return false;
- }
-
- foreach ($files as $local_path => $remote_path) {
- $result = @$this->_s3->deleteObject($this->_config['bucket'], $remote_path);
- $results[] = $this->get_result($local_path, $remote_path, ($result ? W3TC_CDN_RESULT_OK : W3TC_CDN_RESULT_ERROR), ($result ? 'OK' : 'Unable to delete object'));
-
- if ($result) {
- $count++;
- }
-
- if ($this->_config['compression']) {
- $remote_path_gzip = $remote_path . $this->_gzip_extension;
- $result = @$this->_s3->deleteObject($this->_config['bucket'], $remote_path_gzip);
- $results[] = $this->get_result($local_path, $remote_path_gzip, ($result ? W3TC_CDN_RESULT_OK : W3TC_CDN_RESULT_ERROR), ($result ? 'OK' : 'Unable to delete object'));
-
- if ($result) {
- $count++;
- }
- }
- }
-
- return $count;
- }
-
- /**
- * Tests S3
- *
- * @param string $error
- * @return boolean
- */
- function test(&$error)
- {
- if (!parent::test($error)) {
- return false;
- }
-
- $string = 'test_s3_' . md5(time());
-
- if (!$this->_init($error)) {
- return false;
- }
-
- $this->set_error_handler();
-
- $buckets = @$this->_s3->listBuckets();
-
- if (!$buckets) {
- $error = sprintf('Unable to list buckets (%s).', $this->get_last_error());
-
- $this->restore_error_handler();
-
- return false;
- }
-
- if (!in_array($this->_config['bucket'], (array) $buckets)) {
- $error = sprintf('Bucket doesn\'t exist: %s', $this->_config['bucket']);
-
- $this->restore_error_handler();
-
- return false;
- }
-
- if (!@$this->_s3->putObjectString($string, $this->_config['bucket'], $string, S3::ACL_PUBLIC_READ)) {
- $error = sprintf('Unable to put object (%s).', $this->get_last_error());
-
- $this->restore_error_handler();
-
- return false;
- }
-
- if (!($object = @$this->_s3->getObject($this->_config['bucket'], $string))) {
- $error = sprintf('Unable to get object (%s).', $this->get_last_error());
-
- $this->restore_error_handler();
-
- return false;
- }
-
- if ($object->body != $string) {
- @$this->_s3->deleteObject($this->_config['bucket'], $string);
-
- $error = 'Objects are not equal.';
-
- $this->restore_error_handler();
-
- return false;
- }
-
- if (!@$this->_s3->deleteObject($this->_config['bucket'], $string)) {
- $error = sprintf('Unable to delete object (%s).', $this->get_last_error());
-
- $this->restore_error_handler();
-
- return false;
- }
-
- $this->restore_error_handler();
-
- return true;
- }
-
- /**
- * Returns CDN domain
- *
- * @return string
- */
- function get_domains()
- {
- if (!empty($this->_config['cname'])) {
- return (array) $this->_config['cname'];
- } elseif (!empty($this->_config['bucket'])) {
- $domain = sprintf('%s.s3.amazonaws.com', $this->_config['bucket']);
-
- return array(
- $domain
- );
- }
-
- return array();
- }
-
- /**
- * Returns via string
- *
- * @return string
- */
- function get_via()
- {
- return sprintf('Amazon Web Services: S3: %s', parent::get_via());
- }
-
- /**
- * Creates bucket
- *
- * @param string $container_id
- * @param string $error
- * @return boolean
- */
- function create_container(&$container_id, &$error)
- {
- if (!$this->_init($error)) {
- return false;
- }
-
- $this->set_error_handler();
-
- $buckets = @$this->_s3->listBuckets();
-
- if (!$buckets) {
- $error = sprintf('Unable to list buckets (%s).', $this->get_last_error());
-
- $this->restore_error_handler();
-
- return false;
- }
-
- if (in_array($this->_config['bucket'], (array) $buckets)) {
- $error = sprintf('Bucket already exists: %s.', $this->_config['bucket']);
-
- $this->restore_error_handler();
-
- return false;
- }
-
- if (!@$this->_s3->putBucket($this->_config['bucket'], S3::ACL_PUBLIC_READ)) {
- $error = sprintf('Unable to create bucket: %s (%s).', $this->_config['bucket'], $this->get_last_error());
- $this->restore_error_handler();
-
- return false;
- }
-
- $this->restore_error_handler();
-
- return true;
- }
-
- /**
- * Formats URL for object
- * @param string $path
- * @return string
- */
- function format_url($path)
- {
- $url = parent::format_url($path);
-
- if ($this->_config['compression'] && isset($_SERVER['HTTP_ACCEPT_ENCODING']) && stristr($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== false && $this->may_gzip($path)) {
- if (($qpos = strpos($url, '?')) !== false) {
- $url = substr_replace($url, $this->_gzip_extension, $qpos, 0);
- } else {
- $url .= $this->_gzip_extension;
- }
-
- return $url;
- }
-
- return $url;
- }
-
- /**
- * Our error handler
- *
- * @param integer $errno
- * @param string $errstr
- * @return boolean
- */
- function error_handler($errno, $errstr)
- {
- $this->_last_error = $errstr;
-
- return false;
- }
-
- /**
- * Returns last error
- *
- * @return string
- */
- function get_last_error()
- {
- return $this->_last_error;
- }
-
- /**
- * Set our error handler
- *
- * @return void
- */
- function set_error_handler()
- {
- set_error_handler(array(
- &$this,
- 'error_handler'
- ));
- }
-
- /**
- * Restore prev error handler
- *
- * @return void
- */
- function restore_error_handler()
- {
- restore_error_handler();
- }
- }