scala – 如何实现多个Silhouette Authenticators？

>正如道格拉斯刘已经在评论中指出的那样,你需要创建一个额外的environment类型.它应该将Identity与相应的Authenticator连接起来.

例如：

trait CookieEnv extends Env {
  type I = Account
  type A = CookieAuthenticator
}

trait JWTEnv extends Env {
  type I = Account
  type A = JWTAuthenticator
}

>在Silhouette模块中实现JWT绑定.请查看play-silhouette-angular-seed以获取完整示例.

例如：

class SilhouetteModule extends AbstractModule with ScalaModule {

  def configure() {
    bind[Silhouette[CookieEnv]].to[SilhouetteProvider[CookieEnv]]
    bind[Silhouette[JWTEnv]].to[SilhouetteProvider[JWTEnv]]
    // ...
    ()
  }

   @Provides
  def provideCookieEnvironment(
                                userService: AccountService,authenticatorService: AuthenticatorService[CookieAuthenticator],eventBus: EventBus): Environment[CookieEnv] = {

    Environment[CookieEnv](
      userService,authenticatorService,Seq(),eventBus
    )
  }

  @Provides
  def provideJWTEnvironment(
                             userService: AccountService,authenticatorService: AuthenticatorService[JWTAuthenticator],eventBus: EventBus): Environment[JWTEnv] = {

    Environment[JWTEnv](
      userService,eventBus
    )
  }

// ...

  @Provides
  def provideCookieAuthenticatorService(
                                         @Named("authenticator-cookie-signer") cookieSigner: CookieSigner,@Named("authenticator-crypter") crypter: Crypter,fingerprintGenerator: FingerprintGenerator,idGenerator: IDGenerator,configuration: Configuration,clock: Clock): AuthenticatorService[CookieAuthenticator] = {

    val config = configuration.underlying.as[CookieAuthenticatorSettings]("silhouette.authenticator")
    val encoder = new CrypterAuthenticatorEncoder(crypter)

    new CookieAuthenticatorService(config,None,cookieSigner,encoder,fingerprintGenerator,idGenerator,clock)
  }

  @Provides
  def provideJWTAuthenticatorService(
                                      @Named("authenticator-crypter") crypter: Crypter,clock: Clock): AuthenticatorService[JWTAuthenticator] = {

    val config = configuration.underlying.as[JWTAuthenticatorSettings]("silhouette.authenticator")
    val encoder = new CrypterAuthenticatorEncoder(crypter)

    new JWTAuthenticatorService(config,clock)
  }

// ...

}

>将JWTAuthenticator configuration settings添加到silhouette.conf中：

例如：

authenticator.fieldName = "X-Auth-Token"
authenticator.requestParts = ["headers"]
authenticator.issuerClaim = "Your fancy app"
authenticator.authenticatorExpiry = 12 hours
authenticator.sharedSecret = "!!!changeme!!!"

>通过JWT创建单独的身份验证路由：

例如,在app.routes文件中,添加以下行：

# JWT Authentication
POST        /api/jwt/authenticate        controllers.auth.api.AuthController.authenticate

>最后,在AuthController中,添加相应的authenticate方法.

示例代码(改编自SignInController.scala)：

implicit val dataReads = (
  (__  'email).read[String] and
    (__  'password).read[String] and
    (__  'rememberMe).read[Boolean]
  ) (SignInForm.SignInData.apply _)

def authenticate = Action.async(parse.json) { implicit request =>
  request.body.validate[SignInForm.SignInData].map { signInData =>
    credentialsProvider.authenticate(Credentials(signInData.email,signInData.password)).flatMap { loginInfo =>
      accountService.retrieve(loginInfo).flatMap {
        case Some(user) => silhouette.env.authenticatorService.create(loginInfo).map {
          case authenticator if signInData.rememberMe =>
            val c = configuration.underlying
            authenticator.copy(
              expirationDateTime = clock.now + c.as[FiniteDuration]("silhouette.authenticator.rememberMe.authenticatorExpiry"),idleTimeout = c.getAs[FiniteDuration]("silhouette.authenticator.rememberMe.authenticatorIdleTimeout")
            )
          case authenticator => authenticator
        }.flatMap { authenticator =>
          Logger.info(s"User ${user._id} successfully authenticated.")
          silhouette.env.eventBus.publish(LoginEvent(user,request))
          silhouette.env.authenticatorService.init(authenticator).map { token =>
            Ok(Json.obj("token" -> token))
          }
        }
        case None => Future.failed(new IdentityNotFoundException("Couldn't find user."))
      }
    }.recover {
      /* Login did not succeed,because user provided invalid credentials. */
      case e: ProviderException =>
        Logger.info(s"Host ${request.remoteAddress} tried to login with invalid credentials (email: ${signInData.email}).")
        Unauthorized(Json.obj("error" -> Messages("error.invalidCredentials")))
    }
  }.recoverTotal {
    case e: JsError =>
      Logger.info(s"Host ${request.remoteAddress} sent invalid auth payload. Error: $e.")
      Future.successful(Unauthorized(Json.obj("error" -> Messages("error.invalidPayload"))))
  }
}