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googleapis/google-auth-library-php: Google Auth Library for PHP

原作者: [db:作者] 来自: 网络 收藏 邀请

开源软件名称（OpenSource Name）：

googleapis/google-auth-library-php

开源软件地址(OpenSource Url)：

https://github.com/googleapis/google-auth-library-php

开源编程语言(OpenSource Language)：

PHP 100.0%

开源软件介绍(OpenSource Introduction)：

Google Auth Library for PHP

Homepage
http://www.github.com/google/google-auth-library-php
Reference Docs
https://googleapis.github.io/google-auth-library-php/main/
Authors
Tim Emiola
Stanley Cheung
Brent Shaffer
Copyright
Copyright © 2015 Google, Inc.
License
Apache 2.0

Description

This is Google's officially supported PHP client library for using OAuth 2.0 authorization and authentication with Google APIs.

Installing via Composer

The recommended way to install the google auth library is through Composer.

# Install Composer
curl -sS https://getcomposer.org/installer | php

Next, run the Composer command to install the latest stable version:

composer.phar require google/auth

Application Default Credentials

This library provides an implementation of application default credentials for PHP.

The Application Default Credentials provide a simple way to get authorization credentials for use in calling Google APIs.

They are best suited for cases when the call needs to have the same identity and authorization level for the application independent of the user. This is the recommended approach to authorize calls to Cloud APIs, particularly when you're building an application that uses Google Compute Engine.

Download your Service Account Credentials JSON file

To use Application Default Credentials, You first need to download a set of JSON credentials for your project. Go to APIs & Services > Credentials in the Google Developers Console and select Service account from the Add credentials dropdown.

This file is your only copy of these credentials. It should never be committed with your source code, and should be stored securely.

Once downloaded, store the path to this file in the GOOGLE_APPLICATION_CREDENTIALS environment variable.

putenv('GOOGLE_APPLICATION_CREDENTIALS=/path/to/my/credentials.json');

PHP's putenv function is just one way to set an environment variable. Consider using .htaccess or apache configuration files as well.

Enable the API you want to use

Before making your API call, you must be sure the API you're calling has been enabled. Go to APIs & Auth > APIs in the Google Developers Console and enable the APIs you'd like to call. For the example below, you must enable the Drive API.

Call the APIs

As long as you update the environment variable below to point to your JSON credentials file, the following code should output a list of your Drive files.

use Google\Auth\ApplicationDefaultCredentials;
use GuzzleHttp\Client;
use GuzzleHttp\HandlerStack;

// specify the path to your application credentials
putenv('GOOGLE_APPLICATION_CREDENTIALS=/path/to/my/credentials.json');

// define the scopes for your API call
$scopes = ['https://www.googleapis.com/auth/drive.readonly'];

// create middleware
$middleware = ApplicationDefaultCredentials::getMiddleware($scopes);
$stack = HandlerStack::create();
$stack->push($middleware);

// create the HTTP client
$client = new Client([
  'handler' => $stack,
  'base_uri' => 'https://www.googleapis.com',
  'auth' => 'google_auth'  // authorize all requests
]);

// make the request
$response = $client->get('drive/v2/files');

// show the result!
print_r((string) $response->getBody());
Guzzle 5 Compatibility

If you are using Guzzle 5, replace the create middleware and create the HTTP Client steps with the following:

// create the HTTP client
$client = new Client([
  'base_url' => 'https://www.googleapis.com',
  'auth' => 'google_auth'  // authorize all requests
]);

// create subscriber
$subscriber = ApplicationDefaultCredentials::getSubscriber($scopes);
$client->getEmitter()->attach($subscriber);

Call using an ID Token

If your application is running behind Cloud Run, or using Cloud Identity-Aware Proxy (IAP), you will need to fetch an ID token to access your application. For this, use the static method getIdTokenMiddleware on ApplicationDefaultCredentials.

use Google\Auth\ApplicationDefaultCredentials;
use GuzzleHttp\Client;
use GuzzleHttp\HandlerStack;

// specify the path to your application credentials
putenv('GOOGLE_APPLICATION_CREDENTIALS=/path/to/my/credentials.json');

// Provide the ID token audience. This can be a Client ID associated with an IAP application,
// Or the URL associated with a CloudRun App
//    $targetAudience = 'IAP_CLIENT_ID.apps.googleusercontent.com';
//    $targetAudience = 'https://service-1234-uc.a.run.app';
$targetAudience = 'YOUR_ID_TOKEN_AUDIENCE';

// create middleware
$middleware = ApplicationDefaultCredentials::getIdTokenMiddleware($targetAudience);
$stack = HandlerStack::create();
$stack->push($middleware);

// create the HTTP client
$client = new Client([
  'handler' => $stack,
  'auth' => 'google_auth',
  // Cloud Run, IAP, or custom resource URL
  'base_uri' => 'https://YOUR_PROTECTED_RESOURCE',
]);

// make the request
$response = $client->get('/');

// show the result!
print_r((string) $response->getBody());

For invoking Cloud Run services, your service account will need the Cloud Run Invoker IAM permission.

For invoking Cloud Identity-Aware Proxy, you will need to pass the Client ID used when you set up your protected resource as the target audience. See how to secure your IAP app with signed headers.

Call using a specific JSON key

If you want to use a specific JSON key instead of using GOOGLE_APPLICATION_CREDENTIALS environment variable, you can do this:

use Google\Auth\CredentialsLoader;
use Google\Auth\Middleware\AuthTokenMiddleware;
use GuzzleHttp\Client;
use GuzzleHttp\HandlerStack;

// Define the Google Application Credentials array
$jsonKey = ['key' => 'value'];

// define the scopes for your API call
$scopes = ['https://www.googleapis.com/auth/drive.readonly'];

// Load credentials
$creds = CredentialsLoader::makeCredentials($scopes, $jsonKey);

// optional caching
// $creds = new FetchAuthTokenCache($creds, $cacheConfig, $cache);

// create middleware
$middleware = new AuthTokenMiddleware($creds);
$stack = HandlerStack::create();
$stack->push($middleware);

// create the HTTP client
$client = new Client([
  'handler' => $stack,
  'base_uri' => 'https://www.googleapis.com',
  'auth' => 'google_auth'  // authorize all requests
]);

// make the request
$response = $client->get('drive/v2/files');

// show the result!
print_r((string) $response->getBody());

Call using Proxy-Authorization Header

If your application is behind a proxy such as Google Cloud IAP, and your application occupies the Authorization request header, you can include the ID token in a Proxy-Authorization: Bearer header instead. If a valid ID token is found in a Proxy-Authorization header, IAP authorizes the request with it. After authorizing the request, IAP passes the Authorization header to your application without processing the content. For this, use the static method getProxyIdTokenMiddleware on ApplicationDefaultCredentials.

use Google\Auth\ApplicationDefaultCredentials;
use GuzzleHttp\Client;
use GuzzleHttp\HandlerStack;

// specify the path to your application credentials
putenv('GOOGLE_APPLICATION_CREDENTIALS=/path/to/my/credentials.json');

// Provide the ID token audience. This can be a Client ID associated with an IAP application
//    $targetAudience = 'IAP_CLIENT_ID.apps.googleusercontent.com';
$targetAudience = 'YOUR_ID_TOKEN_AUDIENCE';

// create middleware
$middleware = ApplicationDefaultCredentials::getProxyIdTokenMiddleware($targetAudience);
$stack = HandlerStack::create();
$stack->push($middleware);

// create the HTTP client
$client = new Client([
  'handler' => $stack,
  'auth' => ['username', 'pass'], // auth option handled by your application
  'proxy_auth' => 'google_auth',
]);

// make the request
$response = $client->get('/');

// show the result!
print_r((string) $response->getBody());

Verifying JWTs

If you are using Google ID tokens to authenticate users, use the Google\Auth\AccessToken class to verify the ID token:

use Google\Auth\AccessToken;

$auth = new AccessToken();
$auth->verify($idToken);

If your app is running behind Google Identity-Aware Proxy (IAP), you can verify the ID token coming from the IAP server by pointing to the appropriate certificate URL for IAP. This is because IAP signs the ID tokens with a different key than the Google Identity service:

use Google\Auth\AccessToken;

$auth = new AccessToken();
$auth->verify($idToken, [
  'certsLocation' => AccessToken::IAP_CERT_URL
]);

License

This library is licensed under Apache 2.0. Full license text is available in COPYING.

Contributing

See CONTRIBUTING.

Support

Please report bugs at the project on Github. Don't hesitate to ask questions about the client or APIs on StackOverflow.

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