/**
* {@inheritDoc}
*/
public function authenticate(RequestInterface $request)
{
$authHeader = AuthorizationHeader::createFromRequest($request);
$signature = $authHeader->getSignature();
// Check whether the timestamp is valid.
$comparison = $this->compareTimestamp($request, $this->expiry);
if (-1 == $comparison) {
throw new TimestampOutOfRangeException('Request is too old');
} elseif (1 == $comparison) {
throw new TimestampOutOfRangeException('Request is too far in the future');
}
// Load the API Key and sign the request.
if (!($key = $this->keyLoader->load($authHeader->getId()))) {
throw new KeyNotFoundException('API key not found');
}
// Generate the signature from the passed authorization header.
// If it matches the request signature, the request is authenticated.
$compareRequest = $request->withoutHeader('Authorization');
$authHeaderBuilder = new AuthorizationHeaderBuilder($compareRequest, $key);
$authHeaderBuilder->setRealm($authHeader->getRealm());
$authHeaderBuilder->setId($authHeader->getId());
$authHeaderBuilder->setNonce($authHeader->getNonce());
$authHeaderBuilder->setVersion($authHeader->getVersion());
$authHeaderBuilder->setCustomHeaders($authHeader->getCustomHeaders());
$compareAuthHeader = $authHeaderBuilder->getAuthorizationHeader();
$compareSignature = $compareAuthHeader->getSignature();
if (!hash_equals($compareSignature, $signature)) {
throw new InvalidSignatureException('Signature not valid');
}
return $key;
}
/**
* @dataProvider specFixtureProvider
*/
public function testSpec($input, $expectations)
{
$key = new Key($input['id'], $input['secret']);
$digest = new Digest();
$headers = ['X-Authorization-Timestamp' => $input['timestamp'], 'Content-Type' => $input['content_type']];
foreach ($input['headers'] as $header => $value) {
$headers[$header] = $value;
}
$body = !empty($input['content_body']) ? $input['content_body'] : null;
$request = new Request($input['method'], $input['url'], $headers, $body);
$authHeaderBuilder = new AuthorizationHeaderBuilder($request, $key);
$authHeaderBuilder->setRealm($input['realm']);
$authHeaderBuilder->setId($input['id']);
$authHeaderBuilder->setNonce($input['nonce']);
$authHeaderBuilder->setVersion('2.0');
$authHeaderBuilder->setCustomHeaders($input['signed_headers']);
$authHeader = $authHeaderBuilder->getAuthorizationHeader();
$requestSigner = new MockRequestSigner($key, $input['realm'], $digest, $authHeader);
$signedRequest = $requestSigner->signRequest($request, $input['signed_headers']);
$signedAuthHeader = $signedRequest->getHeaderLine('Authorization');
$this->assertContains('id="' . $input['id'] . '"', $signedAuthHeader);
$this->assertContains('nonce="' . $input['nonce'] . '"', $signedAuthHeader);
$this->assertContains('realm="' . rawurlencode($input['realm']) . '"', $signedAuthHeader);
$this->assertContains('signature="' . $expectations['message_signature'] . '"', $signedAuthHeader);
$this->assertContains('version="2.0"', $signedAuthHeader);
// Prove that the digest generates the correct signature.
$signedMessage = $digest->sign($expectations['signable_message'], $input['secret']);
$this->assertEquals($expectations['message_signature'], $signedMessage);
// Prove that the authenticator can authenticate the request.
$keyLoader = new MockKeyLoader([$input['id'] => $input['secret']] + $this->keys);
$authenticator = new MockRequestAuthenticator($keyLoader, null, $input['timestamp']);
$compareKey = $authenticator->authenticate($signedRequest);
$this->assertEquals($compareKey->getId(), $input['id']);
// Prove that the response signer generates the correct signature.
$response = new Response(200, [], $expectations['response_body']);
$responseSigner = new ResponseSigner($key, $signedRequest);
$response = $responseSigner->signResponse($response);
$this->assertTrue($response->hasHeader('X-Server-Authorization-HMAC-SHA256'));
$this->assertEquals($expectations['response_signature'], $response->getHeaderLine('X-Server-Authorization-HMAC-SHA256'));
}
public function testAuthorizationHeaderBuilder()
{
$key = new Key('e7fe97fa-a0c8-4a42-ab8e-2c26d52df059', 'bXlzZWNyZXRzZWNyZXR0aGluZ3Rva2VlcA==');
$headers = ['X-Authorization-Timestamp' => '1432075982', 'Content-Type' => 'application/json'];
$request = new Request('POST', 'http://example.com?test=true', $headers, 'body text');
$builder = new AuthorizationHeaderBuilder($request, $key);
$builder->setId($key->getId());
$builder->setNonce('a9938d07-d9f0-480c-b007-f1e956bcd027');
$builder->setVersion('2.0');
$header = $builder->getAuthorizationHeader();
$this->assertEquals($header->getId(), $key->getId());
$this->assertEquals($header->getSignature(), 'f9G/Xu339hw1z2zHTOrHKNv1kWqvYHYI9Nu/phO5dPY=');
$builder->setSignature('test');
$header = $builder->getAuthorizationHeader();
$this->assertEquals($header->getSignature(), 'test');
}
