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<?php declare(strict_types = 1); |
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namespace AtlassianConnectBundle\Service; |
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use Firebase\JWT\JWT; |
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use GuzzleHttp\Middleware; |
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use GuzzleHttp\Psr7\Request; |
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use Psr\Http\Message\RequestInterface; |
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/** |
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* Class JWTMiddleware |
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*/ |
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class JWTMiddleware |
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{ |
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/** |
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* JWT Authentication middleware for Guzzle |
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* |
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* @param string $issuer Add-on key in most cases |
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* @param string $secret Shared secret |
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* |
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* @return callable |
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*/ |
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public static function authTokenMiddleware(string $issuer, string $secret): callable |
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{ |
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return Middleware::mapRequest( |
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function (RequestInterface $request) use ($issuer, $secret) { |
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return new Request( |
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$request->getMethod(), |
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$request->getUri(), |
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\array_merge($request->getHeaders(), ['Authorization' => 'JWT '.static::create($request, $issuer, $secret)]), |
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$request->getBody() |
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); |
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} |
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); |
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} |
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/** |
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* Create JWT token used by Atlassian REST API request |
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* |
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* @param RequestInterface $request |
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* @param string $issuer Key of the add-on |
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* @param string $secret Shared secret of the Tenant |
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* |
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* @return string |
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*/ |
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private static function create(RequestInterface $request, string $issuer, string $secret): string |
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{ |
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$payload = [ |
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'iss' => $issuer, |
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'iat' => \time(), |
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'exp' => \strtotime('+1 day'), |
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'qsh' => static::qsh((string) $request->getUri(), $request->getMethod()), |
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]; |
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return JWT::encode($payload, $secret); |
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} |
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/** |
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* Create Query String Hash |
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* |
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* More details: |
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* https://developer.atlassian.com/static/connect/docs/latest/concepts/understanding-jwt.html#creating-token |
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* |
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* @param string $url URL of the request |
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* @param string $method HTTP method |
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* |
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* @return string |
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*/ |
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private static function qsh(string $url, string $method): string |
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{ |
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$method = \mb_strtoupper($method); |
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$parts = \parse_url($url); |
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// Remove "/wiki" part from the path for the Confluence |
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// Really, I didn't find this part in the docs, but it works |
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$path = \str_replace('/wiki', '', $parts['path']); |
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$canonicalQuery = ''; |
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if (!empty($parts['query'])) { |
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$query = $parts['query']; |
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$queryParts = \explode('&', $query); |
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$queryArray = []; |
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foreach ($queryParts as $queryPart) { |
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$pieces = \explode('=', $queryPart); |
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$key = \array_shift($pieces); |
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$key = \rawurlencode($key); |
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$value = \mb_substr($queryPart, \mb_strlen($key) + 1); |
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$value = \rawurlencode($value); |
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$queryArray[$key][] = $value; |
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} |
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\ksort($queryArray); |
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foreach ($queryArray as $key => $pieceOfQuery) { |
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$pieceOfQuery = \implode(',', $pieceOfQuery); |
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$canonicalQuery .= $key.'='.$pieceOfQuery.'&'; |
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} |
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$canonicalQuery = \rtrim($canonicalQuery, '&'); |
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} |
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return \hash('sha256', \implode('&', [$method, $path, $canonicalQuery])); |
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} |
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} |
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thecatontheflat /
atlassian-connect-bundle
