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<?php
/**
* Create the body for a multipart/form-data message.
*
* @version $Id: OAuthMultipartFormdata.php 6 2008-02-13 12:35:09Z marcw@pobox.com $
* @author Marc Worrell <marcw@pobox.com>
* @date Jan 31, 2008 12:50:05 PM
*
* The MIT License
*
* Copyright (c) 2007-2008 Mediamatic Lab
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission 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.
*/
class OAuthBodyMultipartFormdata
{
/**
* Builds the request string.
*
* The files array can be a combination of the following (either data or file):
*
* file => "path/to/file", filename=, mime=, data=
*
* @param array params (name => value) (all names and values should be urlencoded)
* @param array files (name => filedesc) (not urlencoded)
* @return array (headers, body)
*/
static function encodeBody ( $params, $files )
{
$headers = array();
$body = '';
$boundary = 'OAuthRequester_'.md5(uniqid('multipart') . microtime());
$headers['Content-Type'] = 'multipart/form-data; boundary=' . $boundary;
// 1. Add the parameters to the post
if (!empty($params))
{
foreach ($params as $name => $value)
{
$body .= '--'.$boundary."\r\n";
$body .= 'Content-Disposition: form-data; name="'.OAuthBodyMultipartFormdata::encodeParameterName(rawurldecode($name)).'"';
$body .= "\r\n\r\n";
$body .= urldecode($value);
$body .= "\r\n";
}
}
// 2. Add all the files to the post
if (!empty($files))
{
$untitled = 1;
foreach ($files as $name => $f)
{
$data = false;
$filename = false;
if (isset($f['filename']))
{
$filename = $f['filename'];
}
if (!empty($f['file']))
{
$data = @file_get_contents($f['file']);
if ($data === false)
{
throw new OAuthException(sprintf('Could not read the file "%s" for form-data part', $f['file']));
}
if (empty($filename))
{
$filename = basename($f['file']);
}
}
else if (isset($f['data']))
{
$data = $f['data'];
}
// When there is data, add it as a form-data part, otherwise silently skip the upload
if ($data !== false)
{
if (empty($filename))
{
$filename = sprintf('untitled-%d', $untitled++);
}
$mime = !empty($f['mime']) ? $f['mime'] : 'application/octet-stream';
$body .= '--'.$boundary."\r\n";
$body .= 'Content-Disposition: form-data; name="'.OAuthBodyMultipartFormdata::encodeParameterName($name).'"; filename="'.OAuthBodyMultipartFormdata::encodeParameterName($filename).'"'."\r\n";
$body .= 'Content-Type: '.$mime;
$body .= "\r\n\r\n";
$body .= $data;
$body .= "\r\n";
}
}
}
$body .= '--'.$boundary."--\r\n";
$headers['Content-Length'] = strlen($body);
return array($headers, $body);
}
/**
* Encode a parameter's name for use in a multipart header.
* For now we do a simple filter that removes some unwanted characters.
* We might want to implement RFC1522 here. See http://tools.ietf.org/html/rfc1522
*
* @param string name
* @return string
*/
static function encodeParameterName ( $name )
{
return preg_replace('/[^\x20-\x7f]|"/', '-', $name);
}
}
/* vi:set ts=4 sts=4 sw=4 binary noeol: */
?>
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