php - PHPS3のアップロードの進行状況

Question

これは何度も繰り返されましたが、私はまだ少し当惑しています。多くの回答は、アップロードの進行状況バーについて話しているだけで、S3アップロードから実際のアップロードの進行状況を取得することはできません。

私はいくつかの質問を読み、いくつかのソフトウェアを見つけましたが、S3アップロードの基本的な質問を理解するのにまだ近づいていません。

最初にファイルを一時ディレクトリに保存するために自分のアプリサーバーリソースを使用せずに、アップロードの進行状況を理解しながらS3にアップロードする方法はありますか？

最初にファイルを自分のサーバーに保存してからS3にプッシュする必要がありますか？人々がS3へのストリーミングビットを一度に（一度に1チャンク）話すのを聞いたことがありますが、これが何を意味するのかわかりません。HTMLページでクライアント側からアップロードしていたと想像してください。ファイルが入ってくるときに、マルチパートからチャンクごとにファイルをストリーミングするにはどうすればよいですか？（ファイルがすでにシステム上にあり、ちょっと役に立たないtbhであるチャンクを知っている場合の例だけの例は見当たりません）。

もちろん、APIドキュメントにアップロードの進行状況の例がありますが、これも、ファイルが最初にサーバー上にあり、ユーザーが提供する別のコンピューターからのものではないと想定しています。

編集：私の当初の考えは、アップロードの進行状況を取得するたびにAWSにpingを実行できるPHPスクリプトを作成することでした。私はAPIを調べて、それらがそのようなものをサポートしているかどうかを確認していますが、運が悪いです。何かあったら教えてください...

さらに編集：フラッシュはこれを行う唯一の方法ですか？

ありがとう、

Answer 1

はい、AWS PHPSDKv3で可能です。

$client = new S3Client(/* config */);

$result = $client->putObject([
    'Bucket'     => 'bucket-name',
    'Key'        => 'bucket-name/file.ext',
    'SourceFile' => 'local-file.ext',
    'ContentType' => 'application/pdf',
    '@http' => [
        'progress' => function ($downloadTotalSize, $downloadSizeSoFar, $uploadTotalSize, $uploadSizeSoFar) {
            printf(
                "%s of %s downloaded, %s of %s uploaded.\n",
                $downloadSizeSoFar,
                $downloadTotalSize,
                $uploadSizeSoFar,
                $uploadTotalSize
            );
        }
    ]
]);

これについては、AWSドキュメント-S3Configセクションで説明されています。このSO回答で説明されているように、 GuzzleHttpのprogressプロパティ呼び出し可能を公開することで機能します。

Answer 2

AWS PHP SDKには、S3へのアップロード中にアップロードの進行状況を表示するコード例があります。小さなファイルに有効かどうかはわかりませんが、ストリーミングには確実に機能します。

詳細については、 http：//aws.amazon.com/sdkforphp/をご覧ください。

ある意味で、進捗状況が表示されている場合は、jqueryなどのJavascriptフレームワークを使用して、進捗状況バーの形式で確実に取得できます。

私はすぐにそれに取り組んでいるでしょう、そして確かにチュートリアルを投稿するでしょう。乾杯！

Answer 3

はい、マルチパートアップロードを介して行うことができます：http：//docs.aws.amazon.com/AmazonS3/latest/dev/UsingMPphpAPI.html

マルチパートアップロードは3段階のプロセスです。アップロードを開始し、オブジェクトパーツをアップロードし、すべてのパーツをアップロードした後、マルチパートアップロードを完了します。完全なマルチパートアップロードリクエストを受信すると、Amazon S3はアップロードされたパーツからオブジェクトを構築し、バケット内の他のオブジェクトと同じようにオブジェクトにアクセスできます。

http://docs.aws.amazon.com/AmazonS3/latest/dev/mpuoverview.html

私はすぐにこれを個人的に行いますが、これはあなたが始める必要があるものです。

Answer 4

たくさん調べてみたところ、この質問に対する簡単な答えは「いいえ」でした。

基本的にこれを行うための最良の方法は、Amazon独自のコーディング（AWS S3コンソール上の小さなアップロードウィジェット）からわかったように、PHPが進行状況情報を読み取ることができる別のサーバーに最初に送信することによってのみアップロードの進行状況を取得することができます。

これにより、独自のアプリサーバーの/tmpディレクトリを踏み台として使用して「パススルー」ポリシーが作成されます。これが好ましい方法のようです。

Answer 5

はい、このようにs3.phpを変更することでこれを行うことができます。

<?php
class S3Withprogressbar {
// ACL flags
const ACL_PRIVATE = 'private';
const ACL_PUBLIC_READ = 'public-read';
const ACL_PUBLIC_READ_WRITE = 'public-read-write';
private static $__accessKey; // AWS Access key
private static $__secretKey; // AWS Secret key
public static $_uploadProgressFileName="" ;//uploadProgressFileName
public function __construct($accessKey = null, $secretKey = null) {
if ($accessKey !== null && $secretKey !== null)
self::setAuth($accessKey, $secretKey);
}
public static function setAuth($accessKey, $secretKey) {
self::$__accessKey = $accessKey;
self::$__secretKey = $secretKey;
}
public static function listBuckets($detailed = false) {
$rest = new S3Request('GET', '', '');
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 200)
$rest->error = array('code' => $rest->code, 'message' => 'Unexpected HTTP status');
if ($rest->error !== false) {
trigger_error(sprintf("S3Withprogressbar::listBuckets(): [%s] %s", $rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
$results = array(); //var_dump($rest->body);
if (!isset($rest->body->Buckets)) return $results;
if ($detailed) {
if (isset($rest->body->Owner, $rest->body->Owner->ID, $rest->body->Owner->DisplayName))
$results['owner'] = array(
'id' => (string)$rest->body->Owner->ID, 'name' => (string)$rest->body->Owner->ID
);
$results['buckets'] = array();
foreach ($rest->body->Buckets->Bucket as $b)
$results['buckets'][] = array(
'name' => (string)$b->Name, 'time' => strtotime((string)$b->CreationDate)
);
} else
foreach ($rest->body->Buckets->Bucket as $b) $results[] = (string)$b->Name;
return $results;
}
public static function getBucket($bucket, $prefix = null, $marker = null, $maxKeys = null) {
$rest = new S3Request('GET', $bucket, '');
if ($prefix !== null && $prefix !== '') $rest->setParameter('prefix', $prefix);
if ($marker !== null && $prefix !== '') $rest->setParameter('marker', $marker);
if ($maxKeys !== null && $prefix !== '') $rest->setParameter('max-keys', $maxKeys);
$response = $rest->getResponse();
if ($response->error === false && $response->code !== 200)
$response->error = array('code' => $response->code, 'message' => 'Unexpected HTTP status');
if ($response->error !== false) {
trigger_error(sprintf("S3Withprogressbar::getBucket(): [%s] %s", $response->error['code'], $response->error['message']), E_USER_WARNING);
return false;
}
$results = array();
$lastMarker = null;
if (isset($response->body, $response->body->Contents))
foreach ($response->body->Contents as $c) {
$results[(string)$c->Key] = array(
'name' => (string)$c->Key,
'time' => strToTime((string)$c->LastModified),
'size' => (int)$c->Size,
'hash' => substr((string)$c->ETag, 1, -1)
);
$lastMarker = (string)$c->Key;
//$response->body->IsTruncated = 'true'; break;
}
if (isset($response->body->IsTruncated) &&
(string)$response->body->IsTruncated == 'false') return $results;
// Loop through truncated results if maxKeys isn't specified
if ($maxKeys == null && $lastMarker !== null && (string)$response->body->IsTruncated == 'true')
do {
$rest = new S3Request('GET', $bucket, '');
if ($prefix !== null) $rest->setParameter('prefix', $prefix);
$rest->setParameter('marker', $lastMarker);
if (($response = $rest->getResponse(true)) == false || $response->code !== 200) break;
if (isset($response->body, $response->body->Contents))
foreach ($response->body->Contents as $c) {
$results[(string)$c->Key] = array(
'name' => (string)$c->Key,
'time' => strToTime((string)$c->LastModified),
'size' => (int)$c->Size,
'hash' => substr((string)$c->ETag, 1, -1)
);
$lastMarker = (string)$c->Key;
}
} while ($response !== false && (string)$response->body->IsTruncated == 'true');
return $results;
}
public function putBucket($bucket, $acl = self::ACL_PRIVATE) {
$rest = new S3Request('PUT', $bucket, '');
$rest->setAmzHeader('x-amz-acl', $acl);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 200)
$rest->error = array('code' => $rest->code, 'message' => 'Unexpected HTTP status');
if ($rest->error !== false) {
//trigger_error(sprintf("S3Withprogressbar::putBucket({$bucket}): [%s] %s", $rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
return true;
}
public function deleteBucket($bucket = '') {
$rest = new S3Request('DELETE', $bucket);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 204)
$rest->error = array('code' => $rest->code, 'message' => 'Unexpected HTTP status');
if ($rest->error !== false) {
trigger_error(sprintf("S3Withprogressbar::deleteBucket({$bucket}): [%s] %s",
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
return true;
}
public static function inputFile($file, $md5sum = true) {
if (!file_exists($file) || !is_file($file) || !is_readable($file)) {
trigger_error('S3Withprogressbar::inputFile(): Unable to open input file: '.$file, E_USER_WARNING);
return false;
}
return array('file' => $file, 'size' => filesize($file),
'md5sum' => $md5sum !== false ? (is_string($md5sum) ? $md5sum :
base64_encode(md5_file($file, true))) : '');
}
public static function inputResource(&$resource, $bufferSize, $md5sum = '') {
if (!is_resource($resource) || $bufferSize <= 0) {
trigger_error('S3Withprogressbar::inputResource(): Invalid resource or buffer size', E_USER_WARNING);
return false;
}
$input = array('size' => $bufferSize, 'md5sum' => $md5sum);
$input['fp'] =& $resource;
return $input;
}
// Modified Function with one more  parameter $uploadProgressFileName
public static function putObject($input, $bucket, $uri, $acl = self::ACL_PRIVATE, $metaHeaders = array(), $contentType = null,$uploadProgressFileName) {
if ($input == false) return false;
$rest = new S3Request('PUT', $bucket, $uri);
// Set public variable value($uploadProgressFileName) in S3Request class  
$rest->uploadProgressFileName = $uploadProgressFileName;
if (is_string($input)) $input = array(
'data' => $input, 'size' => strlen($input),
'md5sum' => base64_encode(md5($input, true))
);
// Data
if (isset($input['fp']))
$rest->fp =& $input['fp'];
elseif (isset($input['file']))
$rest->fp = @fopen($input['file'], 'rb');
elseif (isset($input['data']))
$rest->data = $input['data'];
// Content-Length (required)
if (isset($input['size']) && $input['size'] > 0)
$rest->size = $input['size'];
else {
if (isset($input['file']))
$rest->size = filesize($input['file']);
elseif (isset($input['data']))
$rest->size = strlen($input['data']);
}
// Content-Type
if ($contentType !== null)
$input['type'] = $contentType;
elseif (!isset($input['type']) && isset($input['file']))
$input['type'] = self::__getMimeType($input['file']);
else
$input['type'] = 'application/octet-stream';
// We need to post with the content-length and content-type, MD5 is optional
if ($rest->size > 0 && ($rest->fp !== false || $rest->data !== false)) {
$rest->setHeader('Content-Type', $input['type']);
if (isset($input['md5sum'])) $rest->setHeader('Content-MD5', $input['md5sum']);
$rest->setAmzHeader('x-amz-acl', $acl);
foreach ($metaHeaders as $h => $v) $rest->setAmzHeader('x-amz-meta-'.$h, $v);
$rest->getResponse();
} else
$rest->response->error = array('code' => 0, 'message' => 'Missing input parameters');
if ($rest->response->error === false && $rest->response->code !== 200)
$rest->response->error = array('code' => $rest->response->code, 'message' => 'Unexpected HTTP status');
if ($rest->response->error !== false) {
//trigger_error(sprintf("S3Withprogressbar::putObject(): [%s] %s", $rest->response->error['code'], $rest->response->error['message']), E_USER_WARNING);
return false;
}
return true;
}
// Modified Function with one more  parameter $uploadProgressFileName
public static function putObjectFile($file, $bucket, $uri, $acl = self::ACL_PRIVATE, $metaHeaders = array(), $contentType = null,$uploadProgressFileName) {
return self::putObject(S3Withprogressbar::inputFile($file), $bucket, $uri, $acl, $metaHeaders, $contentType,$uploadProgressFileName);
}
public function putObjectString($string, $bucket, $uri, $acl = self::ACL_PRIVATE, $metaHeaders = array(), $contentType = 'text/plain') {
return self::putObject($string, $bucket, $uri, $acl, $metaHeaders, $contentType);
}
public static function getObject($bucket = '', $uri = '', $saveTo = false) {
$rest = new S3Request('GET', $bucket, $uri);
if ($saveTo !== false) {
if (is_resource($saveTo))
$rest->fp =& $saveTo;
else
if (($rest->fp = @fopen($saveTo, 'wb')) == false)
$rest->response->error = array('code' => 0, 'message' => 'Unable to open save file for writing: '.$saveTo);
}
if ($rest->response->error === false) $rest->getResponse();
if ($rest->response->error === false && $rest->response->code !== 200)
$rest->response->error = array('code' => $rest->response->code, 'message' => 'Unexpected HTTP status');
if ($rest->response->error !== false) {
trigger_error(sprintf("S3Withprogressbar::getObject({$bucket}, {$uri}): [%s] %s",
$rest->response->error['code'], $rest->response->error['message']), E_USER_WARNING);
return false;
}
$rest->file = realpath($saveTo);
return $rest->response;
}
public static function getObjectInfo($bucket = '', $uri = '', $returnInfo = true) {
$rest = new S3Request('HEAD', $bucket, $uri);
$rest = $rest->getResponse();
if ($rest->error === false && ($rest->code !== 200 && $rest->code !== 404))
$rest->error = array('code' => $rest->code, 'message' => 'Unexpected HTTP status');
if ($rest->error !== false) {
trigger_error(sprintf("S3Withprogressbar::getObjectInfo({$bucket}, {$uri}): [%s] %s",
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
return $rest->code == 200 ? $returnInfo ? $rest->headers : true : false;
}
public static function setBucketLogging($bucket, $targetBucket, $targetPrefix) {
$dom = new DOMDocument;
$bucketLoggingStatus = $dom->createElement('BucketLoggingStatus');
$bucketLoggingStatus->setAttribute('xmlns', 'http://s3.amazonaws.com/doc/2006-03-01/');
$loggingEnabled = $dom->createElement('LoggingEnabled');
$loggingEnabled->appendChild($dom->createElement('TargetBucket', $targetBucket));
$loggingEnabled->appendChild($dom->createElement('TargetPrefix', $targetPrefix));
// TODO: Add TargetGrants
$bucketLoggingStatus->appendChild($loggingEnabled);
$dom->appendChild($bucketLoggingStatus);
$rest = new S3Request('PUT', $bucket, '');
$rest->setParameter('logging', null);
$rest->data = $dom->saveXML();
$rest->size = strlen($rest->data);
$rest->setHeader('Content-Type', 'application/xml');
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 200)
$rest->error = array('code' => $rest->code, 'message' => 'Unexpected HTTP status');
if ($rest->error !== false) {
trigger_error(sprintf("S3Withprogressbar::setBucketLogging({$bucket}, {$uri}): [%s] %s",
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
return true;
}
public static function getBucketLogging($bucket = '') {
$rest = new S3Request('GET', $bucket, '');
$rest->setParameter('logging', null);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 200)
$rest->error = array('code' => $rest->code, 'message' => 'Unexpected HTTP status');
if ($rest->error !== false) {
trigger_error(sprintf("S3Withprogressbar::getBucketLogging({$bucket}): [%s] %s",
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
if (!isset($rest->body->LoggingEnabled)) return false; // No logging
return array(
'targetBucket' => (string)$rest->body->LoggingEnabled->TargetBucket,
'targetPrefix' => (string)$rest->body->LoggingEnabled->TargetPrefix,
);
}
public static function setAccessControlPolicy($bucket, $uri = '', $acp = array()) {
$dom = new DOMDocument;
$dom->formatOutput = true;
$accessControlPolicy = $dom->createElement('AccessControlPolicy');
$accessControlList = $dom->createElement('AccessControlList');
// It seems the owner has to be passed along too
$owner = $dom->createElement('Owner');
$owner->appendChild($dom->createElement('ID', $acp['owner']['id']));
$owner->appendChild($dom->createElement('DisplayName', $acp['owner']['name']));
$accessControlPolicy->appendChild($owner);
foreach ($acp['acl'] as $g) {
$grant = $dom->createElement('Grant');
$grantee = $dom->createElement('Grantee');
$grantee->setAttribute('xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance');
if (isset($g['id'])) { // CanonicalUser (DisplayName is omitted)
$grantee->setAttribute('xsi:type', 'CanonicalUser');
$grantee->appendChild($dom->createElement('ID', $g['id']));
} elseif (isset($g['email'])) { // AmazonCustomerByEmail
$grantee->setAttribute('xsi:type', 'AmazonCustomerByEmail');
$grantee->appendChild($dom->createElement('EmailAddress', $g['email']));
} elseif ($g['type'] == 'Group') { // Group
$grantee->setAttribute('xsi:type', 'Group');
$grantee->appendChild($dom->createElement('URI', $g['uri']));
}
$grant->appendChild($grantee);
$grant->appendChild($dom->createElement('Permission', $g['permission']));
$accessControlList->appendChild($grant);
}
$accessControlPolicy->appendChild($accessControlList);
$dom->appendChild($accessControlPolicy);
$rest = new S3Request('PUT', $bucket, '');
$rest->setParameter('acl', null);
$rest->data = $dom->saveXML();
$rest->size = strlen($rest->data);
$rest->setHeader('Content-Type', 'application/xml');
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 200)
$rest->error = array('code' => $rest->code, 'message' => 'Unexpected HTTP status');
if ($rest->error !== false) {
trigger_error(sprintf("S3Withprogressbar::setAccessControlPolicy({$bucket}, {$uri}): [%s] %s",
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
return true;
}
public static function getAccessControlPolicy($bucket, $uri = '') {
$rest = new S3Request('GET', $bucket, $uri);
$rest->setParameter('acl', null);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 200)
$rest->error = array('code' => $rest->code, 'message' => 'Unexpected HTTP status');
if ($rest->error !== false) {
trigger_error(sprintf("S3Withprogressbar::getAccessControlPolicy({$bucket}, {$uri}): [%s] %s",
$rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
$acp = array();
if (isset($rest->body->Owner, $rest->body->Owner->ID, $rest->body->Owner->DisplayName)) {
$acp['owner'] = array(
'id' => (string)$rest->body->Owner->ID, 'name' => (string)$rest->body->Owner->DisplayName
);
}
if (isset($rest->body->AccessControlList)) {
$acp['acl'] = array();
foreach ($rest->body->AccessControlList->Grant as $grant) {
foreach ($grant->Grantee as $grantee) {
if (isset($grantee->ID, $grantee->DisplayName)) // CanonicalUser
$acp['acl'][] = array(
'type' => 'CanonicalUser',
'id' => (string)$grantee->ID,
'name' => (string)$grantee->DisplayName,
'permission' => (string)$grant->Permission
);
elseif (isset($grantee->EmailAddress)) // AmazonCustomerByEmail
$acp['acl'][] = array(
'type' => 'AmazonCustomerByEmail',
'email' => (string)$grantee->EmailAddress,
'permission' => (string)$grant->Permission
);
elseif (isset($grantee->URI)) // Group
$acp['acl'][] = array(
'type' => 'Group',
'uri' => (string)$grantee->URI,
'permission' => (string)$grant->Permission
);
else continue;
}
}
}
return $acp;
}
public static function deleteObject($bucket = '', $uri = '') {
$rest = new S3Request('DELETE', $bucket, $uri);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 204)
$rest->error = array('code' => $rest->code, 'message' => 'Unexpected HTTP status');
if ($rest->error !== false) {
trigger_error(sprintf("S3Withprogressbar::deleteObject(): [%s] %s", $rest->error['code'], $rest->error['message']), E_USER_WARNING);
return false;
}
return true;
}
public static function __getMimeType(&$file) {
$type = false;
// Fileinfo documentation says fileinfo_open() will use the
// MAGIC env var for the magic file
if (extension_loaded('fileinfo') && isset($_ENV['MAGIC']) &&
($finfo = finfo_open(FILEINFO_MIME, $_ENV['MAGIC'])) !== false) {
if (($type = finfo_file($finfo, $file)) !== false) {
// Remove the charset and grab the last content-type
$type = explode(' ', str_replace('; charset=', ';charset=', $type));
$type = array_pop($type);
$type = explode(';', $type);
$type = array_shift($type);
}
finfo_close($finfo);
// If anyone is still using mime_content_type()
} elseif (function_exists('mime_content_type'))
$type = mime_content_type($file);
if ($type !== false && strlen($type) > 0) return $type;
// Otherwise do it the old fashioned way
static $exts = array(
'jpg' => 'image/jpeg', 'gif' => 'image/gif', 'png' => 'image/png',
'tif' => 'image/tiff', 'tiff' => 'image/tiff', 'ico' => 'image/x-icon',
'swf' => 'application/x-shockwave-flash', 'pdf' => 'application/pdf',
'zip' => 'application/zip', 'gz' => 'application/x-gzip',
'tar' => 'application/x-tar', 'bz' => 'application/x-bzip',
'bz2' => 'application/x-bzip2', 'txt' => 'text/plain',
'asc' => 'text/plain', 'htm' => 'text/html', 'html' => 'text/html',
'xml' => 'text/xml', 'xsl' => 'application/xsl+xml',
'ogg' => 'application/ogg', 'mp3' => 'audio/mpeg', 'wav' => 'audio/x-wav',
'avi' => 'video/x-msvideo', 'mpg' => 'video/mpeg', 'mpeg' => 'video/mpeg',
'mov' => 'video/quicktime', 'flv' => 'video/x-flv', 'php' => 'text/x-php'
);
$ext = strToLower(pathInfo($file, PATHINFO_EXTENSION));
return isset($exts[$ext]) ? $exts[$ext] : 'application/octet-stream';
}
public static function __getSignature($string) {
return 'AWS '.self::$__accessKey.':'.base64_encode(extension_loaded('hash') ?
hash_hmac('sha1', $string, self::$__secretKey, true) : pack('H*', sha1(
(str_pad(self::$__secretKey, 64, chr(0x00)) ^ (str_repeat(chr(0x5c), 64))) .
pack('H*', sha1((str_pad(self::$__secretKey, 64, chr(0x00)) ^
(str_repeat(chr(0x36), 64))) . $string)))));
}
}
final class S3Request {
private $verb, $bucket, $uri, $resource = '', $parameters = array(),
$amzHeaders = array(), $headers = array(
'Host' => '', 'Date' => '', 'Content-MD5' => '', 'Content-Type' => ''
);
public $fp = false, $size = 0, $data = false, $response;
public $uploadProgressFileName;
function __construct($verb, $bucket = '', $uri = '') {
$this->verb = $verb;
$this->bucket = strtolower($bucket);
$this->uri = $uri !== '' ? '/'.$uri : '/';
if ($this->bucket !== '') {
$this->bucket = explode('/', $this->bucket);
$this->resource = '/'.$this->bucket[0].$this->uri;
$this->headers['Host'] = $this->bucket[0].'.s3.amazonaws.com';
$this->bucket = implode('/', $this->bucket);
} else {
$this->headers['Host'] = 's3.amazonaws.com';
if (strlen($this->uri) > 1)
$this->resource = '/'.$this->bucket.$this->uri;
else $this->resource = $this->uri;
}
$this->headers['Date'] = gmdate('D, d M Y H:i:s T');
$this->response = new STDClass;
$this->response->error = false;
$this->response->body  = false; 
$CI =& get_instance();
$CI->load->helper('file');
}
public function setParameter($key, $value) {
$this->parameters[$key] = $value;
}
public function setHeader($key, $value) {
$this->headers[$key] = $value;
}
public function setAmzHeader($key, $value) {
$this->amzHeaders[$key] = $value;
}
//:callback function for upload progress.
public function progressCallback_new_curl($new,$download_size, $downloaded_size, $upload_size, $uploaded_size )
{
ob_start();
static $previousProgress = 0;
if ( $upload_size == 0 )
$progress = 0;
else
$progress = round( $uploaded_size * 100 / $upload_size );
if ( $progress > $previousProgress)
{
flush();
$previousProgress = $progress;
$new_file_path = FCPATH.'upload/'.$this->uploadProgressFileName.'.txt'; // modify this line to point to the actual location of the file
write_file($new_file_path, $progress."\n");
// Check for Cancel upload text file and if exists return 1 to interrupt curl upload process.
$cancel_path=FCPATH.'upload/cancel_'.$this->uploadProgressFileName.'.txt';
if(file_exists($cancel_path)){
unlink($cancel_path);
if(file_exists($new_file_path)){
unlink($new_file_path);
}
return 1;
}
}        
ob_flush();
flush();                         
}
public function progressCallback_old_curl($download_size, $downloaded_size, $upload_size, $uploaded_size )
{
ob_start();
static $previousProgress = 0;
if ( $upload_size == 0 )
$progress = 0;
else
$progress = round( $uploaded_size * 100 / $upload_size );
if ( $progress > $previousProgress)
{
flush();
$previousProgress = $progress;
$new_file_path = FCPATH.'upload/'.$this->uploadProgressFileName.'.txt'; // modify this line to point to the actual location of the file
write_file($new_file_path, $progress."\n");
// Check for Cancel upload text file and if exists return 1 to interrupt curl upload process.
$cancel_path=FCPATH.'upload/cancel_'.$this->uploadProgressFileName.'.txt';
if(file_exists($cancel_path)){
unlink($cancel_path);
if(file_exists($new_file_path)){
unlink($new_file_path);
}
return 1;
}  
}
ob_flush();
flush(); 
}
public function getResponse() {
$query = '';
if (sizeof($this->parameters) > 0) {
$query = substr($this->uri, -1) !== '?' ? '?' : '&';
foreach ($this->parameters as $var => $value)
if ($value == null || $value == '') $query .= $var.'&';
else $query .= $var.'='.$value.'&';
$query = substr($query, 0, -1);
$this->uri .= $query;
if (isset($this->parameters['acl']) || !isset($this->parameters['logging']))
$this->resource .= $query;
}
$url = (extension_loaded('openssl')?'https://':'http://').$this->headers['Host'].$this->uri;
//var_dump($this->bucket, $this->uri, $this->resource, $url);
// Basic setup
$curl = curl_init();
curl_setopt($curl, CURLOPT_USERAGENT, 'S3/php');
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($curl, CURLOPT_URL, $url);
//:callback function call for upload progress.
curl_setopt($curl, CURLOPT_NOPROGRESS, false);
if (!defined('PHP_VERSION_ID') || PHP_VERSION_ID < 50500) {
curl_setopt($curl, CURLOPT_PROGRESSFUNCTION,  array($this, 'progressCallback_old_curl'));
} else {
curl_setopt($curl, CURLOPT_PROGRESSFUNCTION,  array($this, 'progressCallback_new_curl'));
}
// Headers
$headers = array(); $amz = array();
foreach ($this->amzHeaders as $header => $value)
if (strlen($value) > 0) $headers[] = $header.': '.$value;
foreach ($this->headers as $header => $value)
if (strlen($value) > 0) $headers[] = $header.': '.$value;
foreach ($this->amzHeaders as $header => $value)
if (strlen($value) > 0) $amz[] = strToLower($header).':'.$value;
$amz = (sizeof($amz) > 0) ? "\n".implode("\n", $amz) : '';
// Authorization string
$headers[] = 'Authorization: ' . S3Withprogressbar::__getSignature(
$this->verb."\n".
$this->headers['Content-MD5']."\n".
$this->headers['Content-Type']."\n".
$this->headers['Date'].$amz."\n".$this->resource
);
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, false);
curl_setopt($curl, CURLOPT_WRITEFUNCTION, array(&$this, '__responseWriteCallback'));
curl_setopt($curl, CURLOPT_HEADERFUNCTION, array(&$this, '__responseHeaderCallback'));
// Request types
switch ($this->verb) {
case 'GET': break;
case 'PUT':
if ($this->fp !== false) {
curl_setopt($curl, CURLOPT_PUT, true);
curl_setopt($curl, CURLOPT_INFILE, $this->fp);
if ($this->size > 0)
curl_setopt($curl, CURLOPT_INFILESIZE, $this->size);
} elseif ($this->data !== false) {
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'PUT');
curl_setopt($curl, CURLOPT_POSTFIELDS, $this->data);
if ($this->size > 0)
curl_setopt($curl, CURLOPT_BUFFERSIZE, $this->size);
} else
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'PUT');
break;
case 'HEAD':
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'HEAD');
curl_setopt($curl, CURLOPT_NOBODY, true);
break;
case 'DELETE':
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'DELETE');
break;
default: break;
}
// Execute, grab errors
if (curl_exec($curl))
$this->response->code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
else
$this->response->error = array(
'code' => curl_errno($curl),
'message' => curl_error($curl),
'resource' => $this->resource
);
@curl_close($curl);
// Parse body into XML
if ($this->response->error === false && isset($this->response->headers['type']) &&
$this->response->headers['type'] == 'application/xml' && isset($this->response->body)) {
$this->response->body = simplexml_load_string($this->response->body);
// Grab S3 errors
if (!in_array($this->response->code, array(200, 204)) &&
isset($this->response->body->Code, $this->response->body->Message)) {
$this->response->error = array(
'code' => (string)$this->response->body->Code,
'message' => (string)$this->response->body->Message
);
if (isset($this->response->body->Resource))
$this->response->error['resource'] = (string)$this->response->body->Resource;
unset($this->response->body);
}
}
// Clean up file resources
if ($this->fp !== false && is_resource($this->fp)) fclose($this->fp);
return $this->response;
}
private function __responseWriteCallback(&$curl, &$data) {
if ($this->response->code == 200 && $this->fp !== false)
return fwrite($this->fp, $data);
else
$this->response->body .= $data;
return strlen($data);
}
private function __responseHeaderCallback(&$curl, &$data) {
if (($strlen = strlen($data)) <= 2) return $strlen;
if (substr($data, 0, 4) == 'HTTP')
$this->response->code = (int)substr($data, 9, 3);
else {
list($header, $value) = explode(': ', trim($data));
if ($header == 'Last-Modified')
$this->response->headers['time'] = strtotime($value);
elseif ($header == 'Content-Length')
$this->response->headers['size'] = (int)$value;
elseif ($header == 'Content-Type')
$this->response->headers['type'] = $value;
elseif ($header == 'ETag')
$this->response->headers['hash'] = substr($value, 1, -1);
elseif (preg_match('/^x-amz-meta-.*$/', $header))
$this->response->headers[$header] = is_numeric($value) ? (int)$value : $value;
}
return $strlen;
}
}
?>