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<?php
/**
* Copyright 2017 Facebook, Inc.
*
* You are hereby granted a non-exclusive, worldwide, royalty-free license to
* use, copy, modify, and distribute this software in source code or binary
* form for use in connection with the web services and APIs provided by
* Facebook.
*
* As with any software that integrates with the Facebook platform, your use
* of this software is subject to the Facebook Developer Principles and
* Policies [http://developers.facebook.com/policy/]. This copyright notice
* shall be included in all copies or substantial portions of the software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
namespace Facebook\Http;
use Facebook\FileUpload\FacebookFile;
/**
* Class RequestBodyMultipartt
*
* Some things copied from Guzzle
*
* @package Facebook
*
* @see https://github.com/guzzle/guzzle/blob/master/src/Post/MultipartBody.php
*/
class RequestBodyMultipart implements RequestBodyInterface
{
/**
* @var string The boundary.
*/
private $boundary;
/**
* @var array The parameters to send with this request.
*/
private $params;
/**
* @var array The files to send with this request.
*/
private $files = [];
/**
* @param array $params The parameters to send with this request.
* @param array $files The files to send with this request.
* @param string $boundary Provide a specific boundary.
*/
public function __construct(array $params = [], array $files = [], $boundary = null)
{
$this->params = $params;
$this->files = $files;
$this->boundary = $boundary ?: uniqid();
}
/**
* @inheritdoc
*/
public function getBody()
{
$body = '';
// Compile normal params
$params = $this->getNestedParams($this->params);
foreach ($params as $k => $v) {
$body .= $this->getParamString($k, $v);
}
// Compile files
foreach ($this->files as $k => $v) {
$body .= $this->getFileString($k, $v);
}
// Peace out
$body .= "--{$this->boundary}--\r\n";
return $body;
}
/**
* Get the boundary
*
* @return string
*/
public function getBoundary()
{
return $this->boundary;
}
/**
* Get the string needed to transfer a file.
*
* @param string $name
* @param FacebookFile $file
*
* @return string
*/
private function getFileString($name, FacebookFile $file)
{
return sprintf(
"--%s\r\nContent-Disposition: form-data; name=\"%s\"; filename=\"%s\"%s\r\n\r\n%s\r\n",
$this->boundary,
$name,
$file->getFileName(),
$this->getFileHeaders($file),
$file->getContents()
);
}
/**
* Get the string needed to transfer a POST field.
*
* @param string $name
* @param string $value
*
* @return string
*/
private function getParamString($name, $value)
{
return sprintf(
"--%s\r\nContent-Disposition: form-data; name=\"%s\"\r\n\r\n%s\r\n",
$this->boundary,
$name,
$value
);
}
/**
* Returns the params as an array of nested params.
*
* @param array $params
*
* @return array
*/
private function getNestedParams(array $params)
{
$query = http_build_query($params, null, '&');
$params = explode('&', $query);
$result = [];
foreach ($params as $param) {
list($key, $value) = explode('=', $param, 2);
$result[urldecode($key)] = urldecode($value);
}
return $result;
}
/**
* Get the headers needed before transferring the content of a POST file.
*
* @param FacebookFile $file
*
* @return string
*/
protected function getFileHeaders(FacebookFile $file)
{
return "\r\nContent-Type: {$file->getMimetype()}";
}
}
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