OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	09/30/2021 11:53:24 AM	rwxr-xr-x
📄 AppendStream.php	5.77 KB	09/30/2021 11:53:19 AM	rw-r--r--
📄 BufferStream.php	3.1 KB	09/30/2021 11:53:16 AM	rw-r--r--
📄 CachingStream.php	4.31 KB	09/30/2021 11:53:11 AM	rw-r--r--
📄 DroppingStream.php	1.12 KB	09/30/2021 11:53:15 AM	rw-r--r--
📄 FnStream.php	4.31 KB	09/30/2021 11:53:09 AM	rw-r--r--
📄 Header.php	2.04 KB	09/30/2021 11:53:15 AM	rw-r--r--
📄 HttpFactory.php	3.02 KB	09/30/2021 11:53:16 AM	rw-r--r--
📄 InflateStream.php	1.3 KB	09/30/2021 11:53:13 AM	rw-r--r--
📄 LazyOpenStream.php	899 bytes	09/30/2021 11:53:15 AM	rw-r--r--
📄 LimitStream.php	4.14 KB	09/30/2021 11:53:20 AM	rw-r--r--
📄 Message.php	8.01 KB	09/30/2021 11:53:21 AM	rw-r--r--
📄 MessageTrait.php	6.46 KB	09/30/2021 11:53:10 AM	rw-r--r--
📄 MimeType.php	4.2 KB	09/30/2021 11:53:11 AM	rw-r--r--
📄 MultipartStream.php	4.67 KB	09/30/2021 11:53:21 AM	rw-r--r--
📄 NoSeekStream.php	470 bytes	09/30/2021 11:53:12 AM	rw-r--r--
📄 PumpStream.php	4.43 KB	09/30/2021 11:53:11 AM	rw-r--r--
📄 Query.php	3.55 KB	09/30/2021 11:53:18 AM	rw-r--r--
📄 Request.php	3.81 KB	09/30/2021 11:53:14 AM	rw-r--r--
📄 Response.php	4.79 KB	09/30/2021 11:53:12 AM	rw-r--r--
📄 Rfc7230.php	665 bytes	09/30/2021 11:53:22 AM	rw-r--r--
📄 ServerRequest.php	9.23 KB	09/30/2021 11:53:20 AM	rw-r--r--
📄 Stream.php	7.05 KB	09/30/2021 11:53:14 AM	rw-r--r--
📄 StreamDecoratorTrait.php	3.22 KB	09/30/2021 11:53:17 AM	rw-r--r--
📄 StreamWrapper.php	4.01 KB	09/30/2021 11:53:13 AM	rw-r--r--
📄 UploadedFile.php	4.75 KB	09/30/2021 11:53:18 AM	rw-r--r--
📄 Uri.php	21.3 KB	09/30/2021 11:53:17 AM	rw-r--r--
📄 UriNormalizer.php	8.22 KB	09/30/2021 11:53:10 AM	rw-r--r--
📄 UriResolver.php	8.36 KB	09/30/2021 11:53:19 AM	rw-r--r--
📄 Utils.php	13.9 KB	09/30/2021 11:53:18 AM	rw-r--r--

Editing: MultipartStream.php

<?php

declare(strict_types=1);

namespace GuzzleHttp\Psr7;

use Psr\Http\Message\StreamInterface;

/**
 * Stream that when read returns bytes for a streaming multipart or
 * multipart/form-data stream.
 */
final class MultipartStream implements StreamInterface
{
    use StreamDecoratorTrait;

/** @var string */
    private $boundary;

/**
     * @param array  $elements Array of associative arrays, each containing a
     *                         required "name" key mapping to the form field,
     *                         name, a required "contents" key mapping to a
     *                         StreamInterface/resource/string, an optional
     *                         "headers" associative array of custom headers,
     *                         and an optional "filename" key mapping to a
     *                         string to send as the filename in the part.
     * @param string $boundary You can optionally provide a specific boundary
     *
     * @throws \InvalidArgumentException
     */
    public function __construct(array $elements = [], string $boundary = null)
    {
        $this->boundary = $boundary ?: sha1(uniqid('', true));
        $this->stream = $this->createStream($elements);
    }

public function getBoundary(): string
    {
        return $this->boundary;
    }

public function isWritable(): bool
    {
        return false;
    }

/**
     * Get the headers needed before transferring the content of a POST file
     *
     * @param array<string, string> $headers
     */
    private function getHeaders(array $headers): string
    {
        $str = '';
        foreach ($headers as $key => $value) {
            $str .= "{$key}: {$value}\r\n";
        }

return "--{$this->boundary}\r\n" . trim($str) . "\r\n\r\n";
    }

/**
     * Create the aggregate stream that will be used to upload the POST data
     */
    protected function createStream(array $elements = []): StreamInterface
    {
        $stream = new AppendStream();

foreach ($elements as $element) {
            $this->addElement($stream, $element);
        }

// Add the trailing boundary with CRLF
        $stream->addStream(Utils::streamFor("--{$this->boundary}--\r\n"));

return $stream;
    }

private function addElement(AppendStream $stream, array $element): void
    {
        foreach (['contents', 'name'] as $key) {
            if (!array_key_exists($key, $element)) {
                throw new \InvalidArgumentException("A '{$key}' key is required");
            }
        }

$element['contents'] = Utils::streamFor($element['contents']);

if (empty($element['filename'])) {
            $uri = $element['contents']->getMetadata('uri');
            if (substr($uri, 0, 6) !== 'php://') {
                $element['filename'] = $uri;
            }
        }

[$body, $headers] = $this->createElement(
            $element['name'],
            $element['contents'],
            $element['filename'] ?? null,
            $element['headers'] ?? []
        );

$stream->addStream(Utils::streamFor($this->getHeaders($headers)));
        $stream->addStream($body);
        $stream->addStream(Utils::streamFor("\r\n"));
    }

private function createElement(string $name, StreamInterface $stream, ?string $filename, array $headers): array
    {
        // Set a default content-disposition header if one was no provided
        $disposition = $this->getHeader($headers, 'content-disposition');
        if (!$disposition) {
            $headers['Content-Disposition'] = ($filename === '0' || $filename)
                ? sprintf(
                    'form-data; name="%s"; filename="%s"',
                    $name,
                    basename($filename)
                )
                : "form-data; name=\"{$name}\"";
        }

// Set a default content-length header if one was no provided
        $length = $this->getHeader($headers, 'content-length');
        if (!$length) {
            if ($length = $stream->getSize()) {
                $headers['Content-Length'] = (string) $length;
            }
        }

// Set a default Content-Type if one was not supplied
        $type = $this->getHeader($headers, 'content-type');
        if (!$type && ($filename === '0' || $filename)) {
            if ($type = MimeType::fromFilename($filename)) {
                $headers['Content-Type'] = $type;
            }
        }

return [$stream, $headers];
    }

private function getHeader(array $headers, string $key)
    {
        $lowercaseHeader = strtolower($key);
        foreach ($headers as $k => $v) {
            if (strtolower($k) === $lowercaseHeader) {
                return $v;
            }
        }

return null;
    }
}