www.gusucode.com > CKFinder 文件管理器PHP版 v3.0源码程序 > code/core/connector/php/vendor/aws/aws-sdk-php/src/Aws/S3/Model/PostObject.php
<?php
/**
* Copyright 2010-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
namespace Aws\S3\Model;
use Aws\Common\Enum\DateFormat;
use Aws\S3\S3Client;
use Guzzle\Common\Collection;
use Guzzle\Http\Url;
/**
* Encapsulates the logic for getting the data for an S3 object POST upload form
*/
class PostObject extends Collection
{
/**
* @var S3Client The S3 client being used to sign the policy
*/
protected $client;
/**
* @var string The bucket name where the object will be posted
*/
protected $bucket;
/**
* @var array The <form> tag attributes as an array
*/
protected $formAttributes;
/**
* @var array The form's <input> elements as an array
*/
protected $formInputs;
/**
* @var string The raw json policy
*/
protected $jsonPolicy;
/**
* Constructs the PostObject
*
* The options array accepts the following keys:
*
* - acl: The access control setting to apply to the uploaded file. Accepts any of the
* CannedAcl constants
* - Cache-Control: The Cache-Control HTTP header value to apply to the uploaded file
* - Content-Disposition: The Content-Disposition HTTP header value to apply to the uploaded file
* - Content-Encoding: The Content-Encoding HTTP header value to apply to the uploaded file
* - Content-Type: The Content-Type HTTP header value to apply to the uploaded file. The default
* value is `application/octet-stream`
* - Expires: The Expires HTTP header value to apply to the uploaded file
* - key: The location where the file should be uploaded to. The default value is
* `^${filename}` which will use the name of the uploaded file
* - policy: A raw policy in JSON format. By default, the PostObject creates one for you
* - policy_callback: A callback used to modify the policy before encoding and signing it. The
* method signature for the callback should accept an array of the policy data as
* the 1st argument, (optionally) the PostObject as the 2nd argument, and return
* the policy data with the desired modifications.
* - success_action_redirect: The URI for Amazon S3 to redirect to upon successful upload
* - success_action_status: The status code for Amazon S3 to return upon successful upload
* - ttd: The expiration time for the generated upload form data
* - x-amz-meta-*: Any custom meta tag that should be set to the object
* - x-amz-server-side-encryption: The server-side encryption mechanism to use
* - x-amz-storage-class: The storage setting to apply to the object
* - x-amz-server-side-encryption-customer-algorithm: The SSE-C algorithm
* - x-amz-server-side-encryption-customer-key: The SSE-C customer secret key
* - x-amz-server-side-encryption-customer-key-MD5: The MD5 hash of the SSE-C customer secret key
*
* For the Cache-Control, Content-Disposition, Content-Encoding,
* Content-Type, Expires, and key options, to use a "starts-with" comparison
* instead of an equals comparison, prefix the value with a ^ (carat)
* character
*
* @param S3Client $client
* @param $bucket
* @param array $options
*/
public function __construct(S3Client $client, $bucket, array $options = array())
{
$this->setClient($client);
$this->setBucket($bucket);
parent::__construct($options);
}
/**
* Analyzes the provided data and turns it into useful data that can be
* consumed and used to build an upload form
*
* @return PostObject
*/
public function prepareData()
{
// Validate required options
$options = Collection::fromConfig($this->data, array(
'ttd' => '+1 hour',
'key' => '^${filename}',
));
// Format ttd option
$ttd = $options['ttd'];
$ttd = is_numeric($ttd) ? (int) $ttd : strtotime($ttd);
unset($options['ttd']);
// If a policy or policy callback were provided, extract those from the options
$rawJsonPolicy = $options['policy'];
$policyCallback = $options['policy_callback'];
unset($options['policy'], $options['policy_callback']);
// Setup policy document
$policy = array(
'expiration' => gmdate(DateFormat::ISO8601_S3, $ttd),
'conditions' => array(array('bucket' => $this->bucket))
);
// Configure the endpoint/action
$url = Url::factory($this->client->getBaseUrl());
if ($url->getScheme() === 'https' && strpos($this->bucket, '.') !== false) {
// Use path-style URLs
$url->setPath($this->bucket);
} else {
// Use virtual-style URLs
$url->setHost($this->bucket . '.' . $url->getHost());
}
// Setup basic form
$this->formAttributes = array(
'action' => (string) $url,
'method' => 'POST',
'enctype' => 'multipart/form-data'
);
$this->formInputs = array(
'AWSAccessKeyId' => $this->client->getCredentials()->getAccessKeyId()
);
// Add success action status
$status = (int) $options->get('success_action_status');
if ($status && in_array($status, array(200, 201, 204))) {
$this->formInputs['success_action_status'] = (string) $status;
$policy['conditions'][] = array(
'success_action_status' => (string) $status
);
unset($options['success_action_status']);
}
// Add other options
foreach ($options as $key => $value) {
$value = (string) $value;
if ($value[0] === '^') {
$value = substr($value, 1);
$this->formInputs[$key] = $value;
$value = preg_replace('/\$\{(\w*)\}/', '', $value);
$policy['conditions'][] = array('starts-with', '$' . $key, $value);
} else {
$this->formInputs[$key] = $value;
$policy['conditions'][] = array($key => $value);
}
}
// Handle the policy
$policy = is_callable($policyCallback) ? $policyCallback($policy, $this) : $policy;
$this->jsonPolicy = $rawJsonPolicy ?: json_encode($policy);
$this->applyPolicy();
return $this;
}
/**
* Sets the S3 client
*
* @param S3Client $client
*
* @return PostObject
*/
public function setClient(S3Client $client)
{
$this->client = $client;
return $this;
}
/**
* Gets the S3 client
*
* @return S3Client
*/
public function getClient()
{
return $this->client;
}
/**
* Sets the bucket and makes sure it is a valid bucket name
*
* @param string $bucket
*
* @return PostObject
*/
public function setBucket($bucket)
{
$this->bucket = $bucket;
return $this;
}
/**
* Gets the bucket name
*
* @return string
*/
public function getBucket()
{
return $this->bucket;
}
/**
* Gets the form attributes as an array
*
* @return array
*/
public function getFormAttributes()
{
return $this->formAttributes;
}
/**
* Gets the form inputs as an array
*
* @return array
*/
public function getFormInputs()
{
return $this->formInputs;
}
/**
* Gets the raw JSON policy
*
* @return string
*/
public function getJsonPolicy()
{
return $this->jsonPolicy;
}
/**
* Handles the encoding, singing, and injecting of the policy
*/
protected function applyPolicy()
{
$jsonPolicy64 = base64_encode($this->jsonPolicy);
$this->formInputs['policy'] = $jsonPolicy64;
$this->formInputs['signature'] = base64_encode(hash_hmac(
'sha1',
$jsonPolicy64,
$this->client->getCredentials()->getSecretKey(),
true
));
}
}