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<?php
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
namespace Google\Tests\AccessToken;
use Google\AccessToken\Verify;
use Google\Tests\BaseTest;
use ReflectionMethod;
class VerifyTest extends BaseTest
{
/**
* This test needs to run before the other verify tests,
* to ensure the constants are not defined.
*/
public function testPhpsecConstants()
{
$client = $this->getClient();
$verify = new Verify($client->getHttpClient());
// set these to values that will be changed
if (defined('MATH_BIGINTEGER_OPENSSL_ENABLED') || defined('CRYPT_RSA_MODE')) {
$this->markTestSkipped('Cannot run test - constants already defined');
}
// Pretend we are on App Engine VMs
putenv('GAE_VM=1');
$verify->verifyIdToken('a.b.c');
putenv('GAE_VM=0');
$openSslEnable = constant('MATH_BIGINTEGER_OPENSSL_ENABLED');
$rsaMode = constant('CRYPT_RSA_MODE');
$this->assertTrue($openSslEnable);
$this->assertEquals(constant($this->getOpenSslConstant()), $rsaMode);
}
/**
* Most of the logic for ID token validation is in AuthTest -
* this is just a general check to ensure we verify a valid
* id token if one exists.
*/
public function testValidateIdToken()
{
$this->checkToken();
$jwt = $this->getJwtService();
$client = $this->getClient();
$http = $client->getHttpClient();
$token = $client->getAccessToken();
if ($client->isAccessTokenExpired()) {
$token = $client->fetchAccessTokenWithRefreshToken();
}
$segments = explode('.', $token['id_token']);
$this->assertCount(3, $segments);
// Extract the client ID in this case as it wont be set on the test client.
$data = json_decode($jwt->urlSafeB64Decode($segments[1]));
$verify = new Verify($http);
$payload = $verify->verifyIdToken($token['id_token'], $data->aud);
$this->assertArrayHasKey('sub', $payload);
$this->assertGreaterThan(0, strlen($payload['sub']));
// TODO: Need to be smart about testing/disabling the
// caching for this test to make sense. Not sure how to do that
// at the moment.
$client = $this->getClient();
$http = $client->getHttpClient();
$data = json_decode($jwt->urlSafeB64Decode($segments[1]));
$verify = new Verify($http);
$payload = $verify->verifyIdToken($token['id_token'], $data->aud);
$this->assertArrayHasKey('sub', $payload);
$this->assertGreaterThan(0, strlen($payload['sub']));
}
/**
* Most of the logic for ID token validation is in AuthTest -
* this is just a general check to ensure we verify a valid
* id token if one exists.
*/
public function testLeewayIsUnchangedWhenPassingInJwt()
{
$this->checkToken();
$jwt = $this->getJwtService();
// set arbitrary leeway so we can check this later
$jwt::$leeway = $leeway = 1.5;
$client = $this->getClient();
$token = $client->getAccessToken();
if ($client->isAccessTokenExpired()) {
$token = $client->fetchAccessTokenWithRefreshToken();
}
$segments = explode('.', $token['id_token']);
$this->assertCount(3, $segments);
// Extract the client ID in this case as it wont be set on the test client.
$data = json_decode($jwt->urlSafeB64Decode($segments[1]));
$verify = new Verify($client->getHttpClient(), null, $jwt);
$payload = $verify->verifyIdToken($token['id_token'], $data->aud);
// verify the leeway is set as it was
$this->assertEquals($leeway, $jwt::$leeway);
}
public function testRetrieveCertsFromLocation()
{
$client = $this->getClient();
$verify = new Verify($client->getHttpClient());
// make this method public for testing purposes
$method = new ReflectionMethod($verify, 'retrieveCertsFromLocation');
$method->setAccessible(true);
$certs = $method->invoke($verify, Verify::FEDERATED_SIGNON_CERT_URL);
$this->assertArrayHasKey('keys', $certs);
$this->assertGreaterThan(1, count($certs['keys']));
$this->assertArrayHasKey('alg', $certs['keys'][0]);
$this->assertEquals('RS256', $certs['keys'][0]['alg']);
}
private function getJwtService()
{
if (class_exists('\Firebase\JWT\JWT')) {
return new \Firebase\JWT\JWT;
}
return new \JWT;
}
private function getOpenSslConstant()
{
if (class_exists('phpseclib3\Crypt\AES')) {
return 'phpseclib3\Crypt\AES::ENGINE_OPENSSL';
}
if (class_exists('phpseclib\Crypt\RSA')) {
return 'phpseclib\Crypt\RSA::MODE_OPENSSL';
}
if (class_exists('Crypt_RSA')) {
return 'CRYPT_RSA_MODE_OPENSSL';
}
}
}