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<?php
/**
* $Id$
*
* Copyright (c) 2013, Donovan Schonknecht. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Amazon S3 is a trademark of Amazon.com, Inc. or its affiliates.
*/
/**
* Amazon S3 PHP class
*
* @link http://undesigned.org.za/2007/10/22/amazon-s3-php-class
* @version 0.5.1 + Signature v4 support ;)
*/
class S3Compatible
{
// ACL flags
const ACL_PRIVATE = 'private';
const ACL_PUBLIC_READ = 'public-read';
const ORIGIN_TYPE_S3 = 's3';
const STORAGE_CLASS_STANDARD = 'STANDARD';
const SSE_NONE = '';
/**
* The AWS Access key
*
* @var string
* @access private
* @static
*/
private static $__accessKey = null;
/**
* AWS Secret Key
*
* @var string
* @access private
* @static
*/
private static $__secretKey = null;
/**
* AWS URI
*
* @var string
* @acess public
* @static
*/
public static $endpoint = 's3.amazonaws.com';
/**
* AWS Region
*
* @var string
* @acess public
* @static
*/
public static $region = '';
/**
* Proxy information
*
* @var null|array
* @access public
* @static
*/
public static $proxy = null;
/**
* Connect using SSL?
*
* @var bool
* @access public
* @static
*/
public static $useSSL = false;
/**
* Use SSL validation?
*
* @var bool
* @access public
* @static
*/
public static $useSSLValidation = true;
/**
* Use SSL version
*
* @var const
* @access public
* @static
*/
public static $useSSLVersion = 1; //CURL_SSLVERSION_TLSv1;
/**
* Use PHP exceptions?
*
* @var bool
* @access public
* @static
*/
public static $useExceptions = false;
/**
* Time offset applied to time()
* @access private
* @static
*/
private static $__timeOffset = 0;
/**
* SSL client key
*
* @var bool
* @access public
* @static
*/
public static $sslKey = null;
/**
* SSL client certfificate
*
* @var string
* @acess public
* @static
*/
public static $sslCert = null;
/**
* SSL CA cert (only required if you are having problems with your system CA cert)
*
* @var string
* @access public
* @static
*/
public static $sslCACert = null;
/**
* AWS Key Pair ID
*
* @var string
* @access private
* @static
*/
private static $__signingKeyPairId = null;
/**
* Key resource, freeSigningKey() must be called to clear it from memory
*
* @var bool
* @access private
* @static
*/
private static $__signingKeyResource = false;
/**
* AWS Signature Version
*
* @var string
* @acess public
* @static
*/
public static $signVer = 'v4';
/**
* Constructor - if you're not using the class statically
*
* @param string $accessKey Access key
* @param string $secretKey Secret key
* @param boolean $useSSL Enable SSL
* @param string $endpoint Amazon URI
* @return void
*/
public function __construct($accessKey = null, $secretKey = null, $useSSL = false, $endpoint = 's3.amazonaws.com', $region = '')
{
if ($accessKey !== null && $secretKey !== null)
self::setAuth($accessKey, $secretKey);
self::$useSSL = $useSSL;
self::$endpoint = $endpoint;
self::$region = $region;
}
/**
* Set the service endpoint
*
* @param string $host Hostname
* @return void
*/
public function setEndpoint($host)
{
self::$endpoint = $host;
}
/**
* Set the service region
*
* @param string $region
* @return void
*/
public function setRegion($region)
{
self::$region = $region;
}
/**
* Get the service region
*
* @return string $region
* @static
*/
public static function getRegion()
{
$region = self::$region;
// parse region from endpoint if not specific
if (empty($region)) {
if (preg_match("/s3[.-](?:website-|dualstack\.)?(.+)\.amazonaws\.com/i",self::$endpoint,$match) !== 0 && strtolower($match[1]) !== "external-1") {
$region = $match[1];
}
}
return empty($region) ? 'us-east-1' : $region;
}
/**
* Set AWS access key and secret key
*
* @param string $accessKey Access key
* @param string $secretKey Secret key
* @return void
*/
public static function setAuth($accessKey, $secretKey)
{
self::$__accessKey = $accessKey;
self::$__secretKey = $secretKey;
}
/**
* Check if AWS keys have been set
*
* @return boolean
*/
public static function hasAuth() {
return (self::$__accessKey !== null && self::$__secretKey !== null);
}
/**
* Set AWS time correction offset (use carefully)
*
* This can be used when an inaccurate system time is generating
* invalid request signatures. It should only be used as a last
* resort when the system time cannot be changed.
*
* @param string $offset Time offset (set to zero to use AWS server time)
* @return void
*/
public static function setTimeCorrectionOffset($offset = 0)
{
if ($offset == 0)
{
$rest = new S3Request('HEAD');
$rest = $rest->getResponse();
$awstime = $rest->headers['date'];
$systime = time();
$offset = $systime > $awstime ? -($systime - $awstime) : ($awstime - $systime);
}
self::$__timeOffset = $offset;
}
/**
* Set signing key
*
* @param string $keyPairId AWS Key Pair ID
* @param string $signingKey Private Key
* @param boolean $isFile Load private key from file, set to false to load string
* @return boolean
*/
public static function setSigningKey($keyPairId, $signingKey, $isFile = true)
{
self::$__signingKeyPairId = $keyPairId;
if ((self::$__signingKeyResource = openssl_pkey_get_private($isFile ?
file_get_contents($signingKey) : $signingKey)) !== false) return true;
self::triggerError('S3Compatible::setSigningKey(): Unable to open load private key: '.$signingKey, __FILE__, __LINE__);
return false;
}
/**
* Set Signature Version
*
* @param string $version of signature ('v4' or 'v2')
* @return void
*/
public static function setSignatureVersion($version = 'v2')
{
self::$signVer = $version;
}
/**
* Free signing key from memory, MUST be called if you are using setSigningKey()
*
* @return void
*/
public static function freeSigningKey()
{
if (self::$__signingKeyResource !== false)
openssl_free_key(self::$__signingKeyResource);
}
/**
* Internal error handler
*
* @internal Internal error handler
* @param string $message Error message
* @param string $file Filename
* @param integer $line Line number
* @param integer $code Error code
* @return void
*/
private static function triggerError($message, $file, $line, $code = 0)
{
if (self::$useExceptions)
throw new S3Exception($message, $file, $line, $code);
else
trigger_error( esc_html( $message ), E_USER_WARNING );
}
/**
* Create input info array for putObject()
*
* @param string $file Input file
* @param mixed $md5sum Use MD5 hash (supply a string if you want to use your own)
* @return array | false
*/
public static function inputFile($file, $md5sum = true)
{
if (!file_exists($file) || !is_file($file) || !is_readable($file))
{
self::triggerError('S3Compatible::inputFile(): Unable to open input file: '.$file, __FILE__, __LINE__);
return false;
}
clearstatcache(false, $file);
return array('file' => $file, 'size' => filesize($file), 'md5sum' => $md5sum !== false ?
(is_string($md5sum) ? $md5sum : base64_encode(md5_file($file, true))) : '', 'sha256sum' => hash_file('sha256', $file));
}
/**
* Put an object
*
* @param mixed $input Input data
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param constant $acl ACL constant
* @param array $metaHeaders Array of x-amz-meta-* headers
* @param array $requestHeaders Array of request headers or content type as a string
* @param constant $storageClass Storage class constant
* @param constant $serverSideEncryption Server-side encryption
* @return boolean
*/
public static function putObject($input, $bucket, $uri, $acl = self::ACL_PRIVATE, $metaHeaders = array(), $requestHeaders = array(), $storageClass = self::STORAGE_CLASS_STANDARD, $serverSideEncryption = self::SSE_NONE)
{
if ($input === false) return false;
$rest = new S3Request('PUT', $bucket, $uri, self::$endpoint);
if (!is_array($input)) $input = array(
'data' => $input, 'size' => strlen($input),
'md5sum' => base64_encode(md5($input, true)),
'sha256sum' => hash('sha256', $input)
);
// Data
if (isset($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'])) {
clearstatcache(false, $input['file']);
$rest->size = filesize($input['file']);
}
elseif (isset($input['data']))
$rest->size = strlen($input['data']);
}
// Custom request headers (Content-Type, Content-Disposition, Content-Encoding)
if (is_array($requestHeaders))
foreach ($requestHeaders as $h => $v)
strpos($h, 'x-amz-') === 0 ? $rest->setAmzHeader($h, $v) : $rest->setHeader($h, $v);
elseif (is_string($requestHeaders)) // Support for legacy contentType parameter
$input['type'] = $requestHeaders;
// Content-Type
if (!isset($input['type']))
{
if (isset($requestHeaders['Content-Type']))
$input['type'] =& $requestHeaders['Content-Type'];
elseif (isset($input['file']))
$input['type'] = self::getMIMEType($input['file']);
else
$input['type'] = 'application/octet-stream';
}
if ($storageClass !== self::STORAGE_CLASS_STANDARD) // Storage class
$rest->setAmzHeader('x-amz-storage-class', $storageClass);
if ($serverSideEncryption !== self::SSE_NONE) // Server-side encryption
$rest->setAmzHeader('x-amz-server-side-encryption', $serverSideEncryption);
// We need to post with Content-Length and Content-Type, MD5 is optional
if ($rest->size >= 0 && ($rest->fp !== false || $rest->data !== false))
{
$rest->setHeader('Content-Type', $input['type']);
if (isset($input['md5sum'])) $rest->setHeader('Content-MD5', $input['md5sum']);
if (isset($input['sha256sum'])) $rest->setAmzHeader('x-amz-content-sha256', $input['sha256sum']);
$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)
{
self::triggerError(sprintf("S3Compatible::putObject(): [%s] %s",
$rest->response->error['code'], $rest->response->error['message']), __FILE__, __LINE__);
return false;
}
return true;
}
/**
* Put an object from a file (legacy function)
*
* @param string $file Input file path
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param constant $acl ACL constant
* @param array $metaHeaders Array of x-amz-meta-* headers
* @param string $contentType Content type
* @return boolean
*/
public static function putObjectFile($file, $bucket, $uri, $acl = self::ACL_PRIVATE, $metaHeaders = array(), $contentType = null)
{
return self::putObject(self::inputFile($file), $bucket, $uri, $acl, $metaHeaders, $contentType);
}
/**
* Put an object from a string (legacy function)
*
* @param string $string Input data
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param constant $acl ACL constant
* @param array $metaHeaders Array of x-amz-meta-* headers
* @param string $contentType Content type
* @return boolean
*/
public static function putObjectString($string, $bucket, $uri, $acl = self::ACL_PRIVATE, $metaHeaders = array(), $contentType = 'text/plain')
{
return self::putObject($string, $bucket, $uri, $acl, $metaHeaders, $contentType);
}
/**
* Get an object
*
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param mixed $saveTo Filename or resource to write to
* @return mixed
*/
public static function getObject($bucket, $uri, $saveTo = false)
{
$rest = new S3Request('GET', $bucket, $uri, self::$endpoint);
if ($saveTo !== false)
{
if (is_resource($saveTo))
$rest->fp =& $saveTo;
else
if (($rest->fp = @fopen($saveTo, 'wb')) !== false)
$rest->file = realpath($saveTo);
else
$rest->response->error = array('code' => 0, 'message' => 'Unable to open save file for writing: '.$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)
{
self::triggerError(sprintf("S3Compatible::getObject({$bucket}, {$uri}): [%s] %s",
$rest->response->error['code'], $rest->response->error['message']), __FILE__, __LINE__);
return false;
}
return $rest->response;
}
/**
* Get object information
*
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param boolean $returnInfo Return response information
* @return mixed | false
*/
public static function getObjectInfo($bucket, $uri, $returnInfo = true)
{
$rest = new S3Request('HEAD', $bucket, $uri, self::$endpoint);
$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)
{
self::triggerError(sprintf("S3Compatible::getObjectInfo({$bucket}, {$uri}): [%s] %s",
$rest->error['code'], $rest->error['message']), __FILE__, __LINE__);
return false;
}
return $rest->code == 200 ? $returnInfo ? $rest->headers : true : false;
}
/**
* Delete an object
*
* @param string $bucket Bucket name
* @param string $uri Object URI
* @return boolean
*/
public static function deleteObject($bucket, $uri)
{
$rest = new S3Request('DELETE', $bucket, $uri, self::$endpoint);
$rest = $rest->getResponse();
if ($rest->error === false && $rest->code !== 204)
$rest->error = array('code' => $rest->code, 'message' => 'Unexpected HTTP status');
if ($rest->error !== false)
{
self::triggerError(sprintf("S3Compatible::deleteObject(): [%s] %s",
$rest->error['code'], $rest->error['message']), __FILE__, __LINE__);
return false;
}
return true;
}
/**
* Get MIME type for file
*
* To override the putObject() Content-Type, add it to $requestHeaders
*
* To use fileinfo, ensure the MAGIC environment variable is set
*
* @internal Used to get mime types
* @param string &$file File path
* @return string
*/
private static function getMIMEType(&$file) {
$type = Util_Mime::get_mime_type($file);
return $type;
}
/**
* Generate the auth string: "AWS AccessKey:Signature"
*
* @internal Used by S3Request::getResponse()
* @param string $string String to sign
* @return string
*/
public static function getSignature($string)
{
return 'AWS '.self::$__accessKey.':'.self::getHash($string);
}
/**
* Creates a HMAC-SHA1 hash
*
* This uses the hash extension if loaded
*
* @internal Used by getSignature()
* @param string $string String to sign
* @return string
*/
private static function getHash($string)
{
return 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)))));
}
/**
* Generate the headers for AWS Signature V4
* @internal Used by S3Request::getResponse()
* @param array $aheaders amzHeaders
* @param array $headers
* @param string $method
* @param string $uri
* @param string $data
* @param array $parameters
* @return array $headers
*/
public static function getSignatureV4($aHeaders, $headers, $method='GET', $uri='', $data = '', $parameters=array())
{
$service = self::ORIGIN_TYPE_S3;
$region = S3Compatible::getRegion();
$algorithm = 'AWS4-HMAC-SHA256';
$amzHeaders = array();
$amzRequests = array();
$amzDate = gmdate( 'Ymd\THis\Z' );
$amzDateStamp = gmdate( 'Ymd' );
// amz-date ISO8601 format ? for aws request
$amzHeaders['x-amz-date'] = $amzDate;
// CanonicalHeaders
foreach ( $headers as $k => $v ) {
$amzHeaders[ strtolower( $k ) ] = trim( $v );
}
foreach ( $aHeaders as $k => $v ) {
$amzHeaders[ strtolower( $k ) ] = trim( $v );
}
uksort( $amzHeaders, 'strcmp' );
// payload
$payloadHash = isset($amzHeaders['x-amz-content-sha256']) ? $amzHeaders['x-amz-content-sha256'] : hash('sha256', $data);
$uriQmPos = strpos($uri, '?');
// CanonicalRequests
$amzRequests[] = $method;
$amzRequests[] = ($uriQmPos === false ? $uri : substr($uri, 0, $uriQmPos));
$amzRequests[] = http_build_query($parameters);
// add header as string to requests
foreach ( $amzHeaders as $k => $v ) {
$amzRequests[] = $k . ':' . $v;
}
// add a blank entry so we end up with an extra line break
$amzRequests[] = '';
// SignedHeaders
$amzRequests[] = implode( ';', array_keys( $amzHeaders ) );
// payload hash
$amzRequests[] = $payloadHash;
// request as string
$amzRequestStr = implode("\n", $amzRequests);
// CredentialScope
$credentialScope = array();
$credentialScope[] = $amzDateStamp;
$credentialScope[] = $region;
$credentialScope[] = $service;
$credentialScope[] = 'aws4_request';
// stringToSign
$stringToSign = array();
$stringToSign[] = $algorithm;
$stringToSign[] = $amzDate;
$stringToSign[] = implode('/', $credentialScope);
$stringToSign[] = hash('sha256', $amzRequestStr);
// as string
$stringToSignStr = implode("\n", $stringToSign);
// Make Signature
$kSecret = 'AWS4' . self::$__secretKey;
$kDate = hash_hmac( 'sha256', $amzDateStamp, $kSecret, true );
$kRegion = hash_hmac( 'sha256', $region, $kDate, true );
$kService = hash_hmac( 'sha256', $service, $kRegion, true );
$kSigning = hash_hmac( 'sha256', 'aws4_request', $kService, true );
$signature = hash_hmac( 'sha256', $stringToSignStr, $kSigning );
$authorization = array(
'Credential=' . self::$__accessKey . '/' . implode( '/', $credentialScope ),
'SignedHeaders=' . implode( ';', array_keys( $amzHeaders ) ),
'Signature=' . $signature,
);
$authorizationStr = $algorithm . ' ' . implode( ',', $authorization );
$resultHeaders = array(
'X-AMZ-DATE' => $amzDate,
'Authorization' => $authorizationStr
);
if (!isset($aHeaders['x-amz-content-sha256'])) $resultHeaders['x-amz-content-sha256'] = $payloadHash;
return $resultHeaders;
}
}
/**
* S3 Request class
*
* @link http://undesigned.org.za/2007/10/22/amazon-s3-php-class
* @version 0.5.0-dev
*/
final class S3Request
{
/**
* AWS URI
*
* @var string
* @access private
*/
private $endpoint;
/**
* Verb
*
* @var string
* @access private
*/
private $verb;
/**
* S3 bucket name
*
* @var string
* @access private
*/
private $bucket;
/**
* Object URI
*
* @var string
* @access private
*/
private $uri;
/**
* Final object URI
*
* @var string
* @access private
*/
private $resource = '';
/**
* Additional request parameters
*
* @var array
* @access private
*/
private $parameters = array();
/**
* Amazon specific request headers
*
* @var array
* @access private
*/
private $amzHeaders = array();
/**
* HTTP request headers
*
* @var array
* @access private
*/
private $headers = array(
'Host' => '', 'Date' => '', 'Content-MD5' => '', 'Content-Type' => ''
);
/**
* Use HTTP PUT?
*
* @var bool
* @access public
*/
public $fp = false;
/**
* PUT file size
*
* @var int
* @access public
*/
public $size = 0;
/**
* PUT post fields
*
* @var array
* @access public
*/
public $data = false;
/**
* S3 request respone
*
* @var object
* @access public
*/
public $response;
/**
* Constructor
*
* @param string $verb Verb
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param string $endpoint AWS endpoint URI
* @return mixed
*/
function __construct($verb, $bucket = '', $uri = '', $endpoint = 's3.amazonaws.com')
{
$this->endpoint = $endpoint;
$this->verb = $verb;
$this->bucket = $bucket;
$this->uri = $uri !== '' ? '/'.str_replace('%2F', '/', rawurlencode($uri)) : '/';
if ($this->bucket !== '')
{
if ($this->dnsBucketName($this->bucket))
{
$this->headers['Host'] = $this->bucket.'.'.$this->endpoint;
$this->resource = '/'.$this->bucket.$this->uri;
}
else
{
$this->headers['Host'] = $this->endpoint;
if ($this->bucket !== '') $this->uri = '/'.$this->bucket.$this->uri;
$this->bucket = '';
$this->resource = $this->uri;
}
}
else
{
$this->headers['Host'] = $this->endpoint;
$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 = null;
$this->response->headers = array();
}
/**
* Set request parameter
*
* @param string $key Key
* @param string $value Value
* @return void
*/
public function setParameter($key, $value)
{
$this->parameters[$key] = $value;
}
/**
* Set request header
*
* @param string $key Key
* @param string $value Value
* @return void
*/
public function setHeader($key, $value)
{
$this->headers[$key] = $value;
}
/**
* Set x-amz-meta-* header
*
* @param string $key Key
* @param string $value Value
* @return void
*/
public function setAmzHeader($key, $value)
{
$this->amzHeaders[$key] = $value;
}
/**
* Get the S3 response
*
* @return object | false
*/
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 .= $var.'='.rawurlencode($value).'&';
$query = substr($query, 0, -1);
$this->uri .= $query;
if (array_key_exists('acl', $this->parameters) ||
array_key_exists('location', $this->parameters) ||
array_key_exists('torrent', $this->parameters) ||
array_key_exists('website', $this->parameters) ||
array_key_exists('logging', $this->parameters))
$this->resource .= $query;
}
$url = (S3Compatible::$useSSL ? 'https://' : 'http://') . ($this->headers['Host'] !== '' ? $this->headers['Host'] : $this->endpoint) . $this->uri;
// Basic setup
$curl = curl_init();
curl_setopt($curl, CURLOPT_USERAGENT, 'S3/php');
if (S3Compatible::$useSSL)
{
// Set protocol version
curl_setopt($curl, CURLOPT_SSLVERSION, S3Compatible::$useSSLVersion);
// SSL Validation can now be optional for those with broken OpenSSL installations
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, S3Compatible::$useSSLValidation ? 2 : 0);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, S3Compatible::$useSSLValidation ? 1 : 0);
if (S3Compatible::$sslKey !== null) curl_setopt($curl, CURLOPT_SSLKEY, S3Compatible::$sslKey);
if (S3Compatible::$sslCert !== null) curl_setopt($curl, CURLOPT_SSLCERT, S3Compatible::$sslCert);
if (S3Compatible::$sslCACert !== null) curl_setopt($curl, CURLOPT_CAINFO, S3Compatible::$sslCACert);
}
curl_setopt($curl, CURLOPT_URL, $url);
if (S3Compatible::$proxy != null && isset(S3Compatible::$proxy['host']))
{
curl_setopt($curl, CURLOPT_PROXY, S3Compatible::$proxy['host']);
curl_setopt($curl, CURLOPT_PROXYTYPE, S3Compatible::$proxy['type']);
if (isset(S3Compatible::$proxy['user'], S3Compatible::$proxy['pass']) && S3Compatible::$proxy['user'] != null && S3Compatible::$proxy['pass'] != null)
curl_setopt($curl, CURLOPT_PROXYUSERPWD, sprintf('%s:%s', S3Compatible::$proxy['user'], S3Compatible::$proxy['pass']));
}
// 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;
// Collect AMZ headers for signature
foreach ($this->amzHeaders as $header => $value)
if (strlen($value) > 0) $amz[] = strtolower($header).':'.$value;
// AMZ headers must be sorted
if (sizeof($amz) > 0)
{
//sort($amz);
usort($amz, array(&$this, 'sortMetaHeadersCmp'));
$amz = "\n".implode("\n", $amz);
} else $amz = '';
if (S3Compatible::hasAuth())
{
// Authorization string (CloudFront stringToSign should only contain a date)
if ($this->headers['Host'] == 'cloudfront.amazonaws.com')
$headers[] = 'Authorization: ' . S3Compatible::getSignature($this->headers['Date']);
else
{
if (S3Compatible::$signVer == 'v2')
{
$headers[] = 'Authorization: ' . S3Compatible::getSignature(
$this->verb."\n".
$this->headers['Content-MD5']."\n".
$this->headers['Content-Type']."\n".
$this->headers['Date'].$amz."\n".
$this->resource
);
} else {
$amzHeaders = S3Compatible::getSignatureV4(
$this->amzHeaders,
$this->headers,
$this->verb,
$this->uri,
$this->data,
$this->parameters
);
foreach ($amzHeaders as $k => $v) {
$headers[] = $k .': '. $v;
}
}
}
}
curl_setopt($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(&$this, 'responseHeaderCallback'));
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
// Request types
switch ($this->verb)
{
case 'GET': break;
case 'PUT': case 'POST': // POST only used for CloudFront
if ($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, $this->verb);
curl_setopt($curl, CURLOPT_POSTFIELDS, $this->data);
}
else
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $this->verb);
break;
case 'HEAD':
curl_setopt($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($this->response->code, array(200, 204, 206)) &&
isset($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;
}
/**
* Sort compare for meta headers
*
* @internal Used to sort x-amz meta headers
* @param string $a String A
* @param string $b String B
* @return integer
*/
private function sortMetaHeadersCmp($a, $b)
{
$lenA = strpos($a, ':');
$lenB = strpos($b, ':');
$minLen = min($lenA, $lenB);
$ncmp = strncmp($a, $b, $minLen);
if ($lenA == $lenB) return $ncmp;
if (0 == $ncmp) return $lenA < $lenB ? -1 : 1;
return $ncmp;
}
/**
* CURL write callback
*
* @param resource &$curl CURL resource
* @param string &$data Data
* @return integer
*/
private function responseWriteCallback(&$curl, &$data)
{
if (in_array($this->response->code, array(200, 206)) && $this->fp !== false)
return fwrite($this->fp, $data);
else
{
if (isset($this->response->body))
$this->response->body .= $data;
else
$this->response->body = $data;
}
return strlen($data);
}
/**
* Check DNS conformity
*
* @param string $bucket Bucket name
* @return boolean
*/
private function dnsBucketName($bucket)
{
if (strlen($bucket) > 63 || preg_match("/[^a-z0-9\.-]/", $bucket) > 0) return false;
if (S3Compatible::$useSSL && strstr($bucket, '.') !== false) return false;
if (strstr($bucket, '-.') !== false) return false;
if (strstr($bucket, '..') !== false) return false;
if (!preg_match("/^[0-9a-z]/", $bucket)) return false;
if (!preg_match("/[0-9a-z]$/", $bucket)) return false;
return true;
}
/**
* CURL header callback
*
* @param resource $curl CURL resource
* @param string $data Data
* @return integer
*/
private function responseHeaderCallback($curl, $data)
{
if (($strlen = strlen($data)) <= 2) return $strlen;
if (substr($data, 0, 4) == 'HTTP')
$this->response->code = (int)substr($data, 9, 3);
else
{
$data = trim($data);
if (strpos($data, ': ') === false) return $strlen;
list($header, $value) = explode(': ', $data, 2);
$header = strtolower($header);
if ($header == 'last-modified')
$this->response->headers['time'] = strtotime($value);
elseif ($header == 'date')
$this->response->headers['date'] = strtotime($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'] = $value[0] == '"' ? substr($value, 1, -1) : $value;
elseif (preg_match('/^x-amz-meta-.*$/', $header))
$this->response->headers[$header] = $value;
}
return $strlen;
}
}
/**
* S3 exception class
*
* @link http://undesigned.org.za/2007/10/22/amazon-s3-php-class
* @version 0.5.0-dev
*/
class S3Exception extends Exception {
/**
* Class constructor
*
* @param string $message Exception message
* @param string $file File in which exception was created
* @param string $line Line number on which exception was created
* @param int $code Exception code
*/
function __construct($message, $file, $line, $code = 0)
{
parent::__construct($message, $code);
$this->file = $file;
$this->line = $line;
}
}