<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpFoundation;

use Symfony\Component\HttpFoundation\File\UploadedFile;

/**
 * FileBag is a container for uploaded files.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Bulat Shakirzyanov <mallluhuct@gmail.com>
 */
class FileBag extends ParameterBag
{
    private const FILE_KEYS = ['error', 'name', 'size', 'tmp_name', 'type'];

    /**
     * @param array|UploadedFile[] $parameters An array of HTTP files
     */
    public function __construct(array $parameters = [])
    {
        $this->replace($parameters);
    }

    /**
     * {@inheritdoc}
     */
    public function replace(array $files = [])
    {
        $this->parameters = [];
        $this->add($files);
    }

    /**
     * {@inheritdoc}
     */
    public function set(string $key, mixed $value)
    {
        if (!\is_array($value) && !$value instanceof UploadedFile) {
            throw new \InvalidArgumentException('An uploaded file must be an array or an instance of UploadedFile.');
        }

        parent::set($key, $this->convertFileInformation($value));
    }

    /**
     * {@inheritdoc}
     */
    public function add(array $files = [])
    {
        foreach ($files as $key => $file) {
            $this->set($key, $file);
        }
    }

    /**
     * Converts uploaded files to UploadedFile instances.
     *
     * @return UploadedFile[]|UploadedFile|null
     */
    protected function convertFileInformation(array|UploadedFile $file): array|UploadedFile|null
    {
        if ($file instanceof UploadedFile) {
            return $file;
        }

        $file = $this->fixPhpFilesArray($file);
        $keys = array_keys($file);
        sort($keys);

        if (self::FILE_KEYS == $keys) {
            if (\UPLOAD_ERR_NO_FILE == $file['error']) {
                $file = null;
            } else {
                $file = new UploadedFile($file['tmp_name'], $file['name'], $file['type'], $file['error'], false);
            }
        } else {
            $file = array_map(function ($v) { return $v instanceof UploadedFile || \is_array($v) ? $this->convertFileInformation($v) : $v; }, $file);
            if (array_keys($keys) === $keys) {
                $file = array_filter($file);
            }
        }

        return $file;
    }

    /**
     * Fixes a malformed PHP $_FILES array.
     *
     * PHP has a bug that the format of the $_FILES array differs, depending on
     * whether the uploaded file fields had normal field names or array-like
     * field names ("normal" vs. "parent[child]").
     *
     * This method fixes the array to look like the "normal" $_FILES array.
     *
     * It's safe to pass an already converted array, in which case this method
     * just returns the original array unmodified.
     */
    protected function fixPhpFilesArray(array $data): array
    {
        // Remove extra key added by PHP 8.1.
        unset($data['full_path']);
        $keys = array_keys($data);
        sort($keys);

        if (self::FILE_KEYS != $keys || !isset($data['name']) || !\is_array($data['name'])) {
            return $data;
        }

        $files = $data;
        foreach (self::FILE_KEYS as $k) {
            unset($files[$k]);
        }

        foreach ($data['name'] as $key => $name) {
            $files[$key] = $this->fixPhpFilesArray([
                'error' => $data['error'][$key],
                'name' => $name,
                'type' => $data['type'][$key],
                'tmp_name' => $data['tmp_name'][$key],
                'size' => $data['size'][$key],
            ]);
        }

        return $files;
    }
}

• [D] Exception
• [D] File
• [D] RateLimiter
• [D] Session
• [D] Test
• [F] AcceptHeader.php
  Delete
• [F] AcceptHeaderItem.php
  Delete
• [F] BinaryFileResponse.php
  Delete
• [F] CHANGELOG.md
  Delete
• [F] composer.json
  Delete
• [F] Cookie.php
  Delete
• [F] ExpressionRequestMatcher.php
  Delete
• [F] FileBag.php
  Delete
• [F] HeaderBag.php
  Delete
• [F] HeaderUtils.php
  Delete
• [F] InputBag.php
  Delete
• [F] IpUtils.php
  Delete
• [F] JsonResponse.php
  Delete
• [F] LICENSE
  Delete
• [F] ParameterBag.php
  Delete
• [F] README.md
  Delete
• [F] RedirectResponse.php
  Delete
• [F] Request.php
  Delete
• [F] RequestMatcher.php
  Delete
• [F] RequestMatcherInterface.php
  Delete
• [F] RequestStack.php
  Delete
• [F] Response.php
  Delete
• [F] ResponseHeaderBag.php
  Delete
• [F] ServerBag.php
  Delete
• [F] StreamedResponse.php
  Delete
• [F] UrlHelper.php
  Delete

Categories

• Blog 1
• Payment 1
• Competitive Research 1
• Information Technology 0

Recent Posts

Mar 27, 2024

The Future of Digital Wallets:...

Mar 27, 2024

The Rise of Contactless Payments:...

Enhancing Payment Security: The Role of Encryption and Tokenization in Digital Transactions

As digital transactions proliferate, ensuring robust payment security is more critical than ever. Two foundational technologies that are pivotal in this effort are encryption and tokenization.
Encryption is a process that transforms data into a secure format, known as ciphertext, which can only be deciphered using a specific decryption key. This means that even if data is intercepted during transmission, it remains unreadable and protected from unauthorized access. Encryption is essential in safeguarding sensitive payment information, such as credit card details and personal data, during online transactions.
Tokenization, on the other hand, involves substituting sensitive data with unique identifiers or "tokens." These tokens serve as placeholders and have no value outside of the specific transaction context. If intercepted, tokens are meaningless and cannot be used to access the original sensitive data. This method significantly reduces the risk of fraud and data breaches, as the actual payment information is not stored or transmitted.
Together, encryption and tokenization form a powerful security framework. Encryption ensures that data is protected during transmission, while tokenization minimizes the risk of exposing sensitive information by replacing it with secure, non-sensitive tokens.
These technologies are integral to modern payment platforms, providing a robust defense against cyber threats. By implementing advanced encryption and tokenization techniques, businesses can enhance the security of digital transactions, ensuring that users' financial and personal information remains safe. This comprehensive approach not only builds user trust but also fortifies the overall security infrastructure of digital payment systems. As cyber threats evolve, the continued advancement of encryption and tokenization will be crucial in maintaining secure and reliable payment processes.

Tags

• Payment