3
  • omniauth-google-oauth2Google アカウントを使用した認証に使用する Web アプリケーションがあります。その後、セッションは Cookie ( session[:user_id]) を使用して維持されます。これは機能します。
  • REST/JSON API を使用して Web サイト サービスを使用する Android アプリケーションもあります。アプリケーションはAccountManager、アクセス トークンを取得するために使用します。これも機能します。

Android アプリケーションに、Web アプリケーションにそのトークンを確認させ、Android アプリケーションとのセッションを開始させるリクエストを作成させようとしています (Cookie は Android アプリケーションで永続化されます)。

Google からのコールバック URL が: であることに気付いたhttp://my.domain.com/auth/google_oauth2/callbackので、パラメーターstate="/"とを追加してみましたcode="<TOKEN FROM AccountManager>"。

これにより、次のことが発生しました。

(google_oauth2) Callback phase initiated.
(google_oauth2) Authentication failure! invalid_credentials: OmniAuth::Strategies::OAuth2::CallbackError, OmniAuth::Strategies::OAuth2::CallbackError

Started GET "/auth/google_oauth2/callback?state=%2F&code=<TOKEN FROM AccountManager>" for 5.102.217.111 at 2013-08-10 18:38:58 +0300

OmniAuth::Strategies::OAuth2::CallbackError (OmniAuth::Strategies::OAuth2::CallbackError):
  omniauth-oauth2 (1.1.1) lib/omniauth/strategies/oauth2.rb:71:in `callback_phase'
  omniauth (1.1.4) lib/omniauth/strategy.rb:226:in `callback_call'
  omniauth (1.1.4) lib/omniauth/strategy.rb:182:in `call!'
  omniauth (1.1.4) lib/omniauth/strategy.rb:164:in `call'
  omniauth (1.1.4) lib/omniauth/builder.rb:49:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
  rack (1.4.5) lib/rack/etag.rb:23:in `call'
  rack (1.4.5) lib/rack/conditionalget.rb:25:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/head.rb:14:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/flash.rb:242:in `call'
  rack (1.4.5) lib/rack/session/abstract/id.rb:210:in `context'
  rack (1.4.5) lib/rack/session/abstract/id.rb:205:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/cookies.rb:341:in `call'
  activerecord (3.2.13) lib/active_record/query_cache.rb:64:in `call'
  activerecord (3.2.13) lib/active_record/connection_adapters/abstract/connection_pool.rb:479:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
  activesupport (3.2.13) lib/active_support/callbacks.rb:405:in `_run__1566251561940761300__call__2926332968477140393__callbacks'
  activesupport (3.2.13) lib/active_support/callbacks.rb:405:in `__run_callback'
  activesupport (3.2.13) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
  activesupport (3.2.13) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (3.2.13) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/reloader.rb:65:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
  railties (3.2.13) lib/rails/rack/logger.rb:32:in `call_app'
  railties (3.2.13) lib/rails/rack/logger.rb:16:in `block in call'
  activesupport (3.2.13) lib/active_support/tagged_logging.rb:22:in `tagged'
  railties (3.2.13) lib/rails/rack/logger.rb:16:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/request_id.rb:22:in `call'
  rack (1.4.5) lib/rack/methodoverride.rb:21:in `call'
  rack (1.4.5) lib/rack/runtime.rb:17:in `call'
  activesupport (3.2.13) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
  rack (1.4.5) lib/rack/lock.rb:15:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/static.rb:63:in `call'
  railties (3.2.13) lib/rails/engine.rb:479:in `call'
  railties (3.2.13) lib/rails/application.rb:223:in `call'
  rack (1.4.5) lib/rack/content_length.rb:14:in `call'
  railties (3.2.13) lib/rails/rack/log_tailer.rb:17:in `call'
  rack (1.4.5) lib/rack/handler/webrick.rb:59:in `service'
  /home/oded/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/webrick/httpserver.rb:138:in `service'
  /home/oded/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/webrick/httpserver.rb:94:in `run'
  /home/oded/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/webrick/server.rb:295:in `block in start_thread'


  Rendered /home/oded/.rvm/gems/ruby-2.0.0-p195/gems/actionpack-3.2.13/lib/action_dispatch/middleware/templates/rescues/_trace.erb (0.8ms)
  Rendered /home/oded/.rvm/gems/ruby-2.0.0-p195/gems/actionpack-3.2.13/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (0.7ms)
  Rendered /home/oded/.rvm/gems/ruby-2.0.0-p195/gems/actionpack-3.2.13/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (5.3ms)

Web アプリケーションと Android アプリケーションの両方が Google API コンソールで承認されます。

使用したくないGoogleAuthUtil理由は 3 つあります。すでに AccountManager を完全に実装している、アプリケーション サイズが少なくとも 2 倍になる、Web アプリの問題をどのように解決できるかわかりません。

一時的な解決策として、Web アプリケーションと同じプロセスを経る WebView アクティビティを作成しました。ユーザーはメールアドレスとパスワードを入力する必要があり、フィッシングかどうかを判断する方法がないため、これは良い解決策ではありません。

Gemfile:

gem 'omniauth-google-oauth2'

セッションコントローラー (app/controllers/sessions_controller.rb):

def new
  redirect_to "/auth/google_oauth2"
end

def create
  auth = request.env["omniauth.auth"]
  account = case auth['provider']
    when GoogleAccount::PROVIDER then GoogleAccount.find_by_omniauth(auth)
  end
  session[:user_id] = account.user.id
  respond_to do |format|
    format.html { redirect_to root_url, :notice => "Signed in!" }
    format.json { render json: { result: true } }
  end
end

Google アカウント (app/models/google_account.rb):

after_validation :create_user!, on: :create

def self.find_by_omniauth(auth)
  google_account = find_by_uid(auth['uid']) || new(uid: auth['uid'])
  google_account.attributes = auth['info'].select { |k, v| k.in?(attribute_names) }
  google_account.save!
  google_account
end

SessionManager.java:

public void login() {
    _accountManager = AccountManager.get(_activity);
    final Account[] accounts = _accountManager.getAccountsByType("com.google");
    String[] accountNames = new String[accounts.length];
    for (int i = 0; i < accounts.length; i++) {
        accountNames[i] = accounts[i].name;
    }

    new AlertDialog.Builder(_activity).
    setItems(accountNames, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            _account = accounts[which];
            getAuthToken();
        }
    }).
    show();
}

private void getAuthToken() {
    _accountManager.getAuthToken(
            _account, "ah", null, _activity,
            new AccountManagerCallback<Bundle>() {
                @Override
                public void run(AccountManagerFuture<Bundle> result) {
                    Bundle bundle;
                    try {
                        bundle = result.getResult();
                    } catch (OperationCanceledException e) {
                        // TODO: handle errors
                        e.printStackTrace();
                        return;
                    } catch (AuthenticatorException e) {
                        // TODO: handle errors
                        e.printStackTrace();
                        return;
                    } catch (IOException e) {
                        // TODO: handle errors
                        e.printStackTrace();
                        return;
                    }

                    Intent launch = (Intent) bundle.get(AccountManager.KEY_INTENT);
                    if (launch != null) {
                        _activity.startActivityForResult(launch, _accountManagerRequestCode);
                        return;
                    }

                    onGetAuthToken(bundle);
                }
            },
            null
            );
}

public void onAccountManagerResult(int resultCode, Intent data) {
    switch (resultCode) {
    case Activity.RESULT_OK:
        _accountManager = AccountManager.get(_activity);
        getAuthToken();
        break;
    }
}

private void onGetAuthToken(Bundle bundle) {
    final String token = bundle.getString(AccountManager.KEY_AUTHTOKEN);
    login(
            token,
            new LoginResponseHandler() {
                @Override
                public void onResult(boolean result, boolean hadAnonymous, String message, Map<String, List<String>> errors) {
                    if (result) {
                        setLoggedIn(true);
                    } else {
                        // Token expired?
                        _accountManager.invalidateAuthToken("com.google", token);
                        getAuthToken();
                    }
                }
            });
}

public static void login(String token, LoginResponseHandler loginResponseHandler) {
    RequestParams requestParams = defaultRequestParams();
    requestParams.put("code", token);
    requestParams.put("state", "/");
    _client.get(
            BASE_URL + "/auth/google_oauth2/callback", requestParams,
            new JsonLoginResponseHandler(loginResponseHandler));
}
4

2 に答える 2

1

Google Play Services を使用すると、GoogleAuthUtil.getToken を呼び出して、Android アプリでトークンを取得できます。http://developer.android.com/google/play-services/auth.htmlを参照してください。

rest-client を使用して、サーバー上のトークンを手動で検証します。過去に使用した Twitter OAuth Echo に基づいてヘッダーを作成しました。

require 'rest_client'
require 'json'

class ApplicationController < ActionController::Base
  # Prevent CSRF attacks by raising an exception.
  # For APIs, you may want to use :null_session instead.
  protect_from_forgery with: :exception

  before_filter :require_login_or_oauth!

  private

  def authorization_header
    'X-Verify-Credentials-Authorization'
  end

  def service_provider_header
    'X-Auth-Service-Provider'
  end

  def verify_url
    'https://www.googleapis.com/oauth2/v1/tokeninfo'
  end

  def client_ids
      %w(-- your client ids here--)
  end

  def find_oauth_user
    if request.headers[authorization_header].nil? or verify_url != request.headers[service_provider_header]
      logger.warn "bad authorization headers"
      render :text => "Bad authorization headers", :status => :unauthorized
      return nil
    end
    begin
      response = RestClient.get verify_url, { :params => { :access_token => request.headers[authorization_header] }, :accept => :json }
      if 200 != response.code
        render :text => "OAuth validation failed", :status => :unauthorized
        return nil
      end
      body = JSON.parse(response.to_str)

      return nil if not client_ids.include? body['audience']
      # TODO log bad client

      # TODO possibly validate scope

      if identity = Identity.find_by_uid(body['user_id'])
        user = identity.user
        logger.info "Authenticated #{user.id} as #{identity.email}"
        return user
      end
      return nil
    rescue RestClient::Exception => e
      logger.warn e
      render :text => "OAuth validation failed", :status => :unauthorized
      return nil
    end
  end

  def require_login_or_oauth!
    if "application/json" == request.format
      user = find_oauth_user
      if user
        sign_in(:user, user)
        session[:user_id] = user.id
      else
        redirect_to root_url, status: 401
      end
    else
      authenticate_user!
    end
  end
end
于 2013-08-18T16:50:38.200 に答える