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<?php |
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/* |
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* This file is part of the Silverback API Components Bundle Project |
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* |
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* (c) Daniel West <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Silverback\ApiComponentsBundle\Model\Uploadable; |
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use Symfony\Component\HttpFoundation\File\Exception\FileException; |
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use Symfony\Component\HttpFoundation\File\File; |
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use Symfony\Component\Mime\MimeTypes; |
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/** |
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* Based on https://github.com/hshn/base64-encoded-file/blob/master/src/HttpFoundation/File/Base64EncodedFile.php |
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* Additional support for data uri - regular expression detection. |
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* |
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* @author Daniel West <[email protected]> |
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*/ |
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class DataUriFile extends File |
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{ |
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/** |
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* @param string $encoded |
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* @param bool $checkPath |
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*/ |
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public function __construct($encoded, $checkPath = true) |
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{ |
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parent::__construct($this->restoreToTemporary($encoded), $checkPath); |
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} |
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/** |
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* @param string $encoded |
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* |
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* @throws FileException |
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*/ |
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private function restoreToTemporary($encoded): string |
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{ |
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preg_match('/^(?:(?:data:(?:\/\/)?([A-Za-z]+\/[A-Za-z.-]+)(?:;(base64))?,|)(?:(.+)|((?:[A-Za-z0-9+\/]{4})*(?:[A-Za-z0-9+\/]{2}==|[A-Za-z0-9+\/]{3}=)?)))$/', $encoded, $matches); |
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$mimeType = $matches[1]; |
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$base64Match = 'base64' === $matches[2]; |
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$isBase64 = '' === $mimeType || $base64Match; |
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if ($isBase64 && !$mimeType) { |
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return $this->decodePlainBase64($encoded); |
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} |
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if (!$isBase64) { |
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return $this->decodeDataUri($matches[3], $mimeType); |
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} |
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return $this->decodeBase64Data($mimeType, $encoded); |
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} |
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private function decodePlainBase64(string $encoded): string |
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{ |
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if (false === $decoded = base64_decode($encoded, true)) { |
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throw new FileException('Unable to decode the string as base64'); |
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} |
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$path = $this->getTempFileBasePath(); |
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if (false === file_put_contents($path, $decoded, FILE_BINARY)) { |
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throw new FileException(sprintf('Unable to write the file "%s"', $path)); |
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} |
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return $path; |
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} |
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private function decodeDataUri(string $dataUriMatch, string $mimeType): string |
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{ |
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$target = $this->createTempFileTarget($mimeType); |
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$content = urldecode($dataUriMatch); |
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if (false === @fwrite($target->resource, $content)) { |
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throw new FileException(sprintf('Unable to write the file "%s"', $target->path)); |
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} |
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$this->closeFile($target); |
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return $target->path; |
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} |
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private function decodeBase64Data(string $mimeType, string $fullMatch): string |
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{ |
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$target = $this->createTempFileTarget($mimeType); |
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$source = @fopen($fullMatch, 'r'); |
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if (false === $source) { |
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throw new FileException('Unable to decode strings as base64'); |
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} |
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if (false === stream_copy_to_stream($source, $target->resource)) { |
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throw new FileException(sprintf('Unable to write the file "%s"', $target->path)); |
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} |
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if (false === @fclose($source)) { |
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throw new FileException(sprintf('Unable to close data stream')); |
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} |
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$this->closeFile($target); |
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return $target->path; |
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} |
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private function getTempFileBasePath(): string |
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{ |
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if (false === $path = tempnam($directory = sys_get_temp_dir(), 'DataUriFile')) { |
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throw new FileException(sprintf('Unable to create a file into the "%s" directory: %s', $directory, $path)); |
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} |
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return $path; |
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} |
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private function createTempFileTarget(string $mimeType): object |
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{ |
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$path = $this->getTempFileBasePath(); |
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if (null !== $extension = (MimeTypes::getDefault()->getExtensions($mimeType)[0] ?? null)) { |
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$path .= '.' . $extension; |
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} |
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if (false === $target = @fopen($path, 'wb+')) { |
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throw new FileException(sprintf('Unable to open the file "%s"', $path)); |
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} |
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$class = new class() { |
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public string $path; |
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public $resource; |
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}; |
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$class->path = $path; |
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$class->resource = $target; |
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return $class; |
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} |
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private function closeFile(object $target): void |
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{ |
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if (false === @fclose($target->resource)) { |
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throw new FileException(sprintf('Unable to close the file "%s"', $target->path)); |
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} |
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} |
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} |
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components-web-app /
api-components-bundle
