第二次尝试刷新令牌时如何修复“格式错误的身份验证代码”？

Question

我正在开发一个带有 Angular 和 Cordova 插件的 Android 应用程序，我想将其与 Google 身份验证集成。我已经安装了cordova-plugin-googleplus 并且已成功集成到该应用程序中。当用户登录时，我会收到响应，我可以在其中获取 accessToken、配置文件用户信息和刷新令牌。

现在我想实现一个功能来刷新令牌，而不会每小时用新的提示屏幕打扰用户。

我已成功更新 accessToken，但仅在第一次有效

我用过这两种方式：

1. 发送带有以下数据的curl请求

curl -X POST \
  'https://oauth2.googleapis.com/token?code=XXXXXXXXXXXXXXXX&client_id=XXXXXXXXXXXXXXXX.apps.googleusercontent.com&client_secret=YYYYYYYYYYYY&grant_type=authorization_code' \
  -H 'Cache-Control: no-cache' \
  -H 'Content-Type: application/x-www-form-urlencoded'

2. 使用 Google API Client Library for Java 在服务器端实现它并主要遵循这些代码

重点是，当用户第一次登录（使用 cordova-plugin-googleplus）时，我收到一个具有这种格式的刷新令牌

4/rgFU-hxw9QSbfdj3ppQ4sqDjK2Dr3m_YU_UMCqcveUgjIa3voawbN9TD6SVLShedTPveQeZWDdR-Sf1nFrss1hc

如果一段时间后我尝试以上述任何一种方式刷新令牌，我会收到带有新 accessToken 和新刷新令牌的成功响应。新的刷新令牌具有其他格式

1/FTSUyYTgU2AG8K-ZsgjVi6pExdmpZejXfoYIchp9KuhtdknEMd6uYCfqMOoX2f85J

在第二次尝试更新令牌时，我将令牌替换为第一个请求中返回的令牌

curl -X POST \
  'https://oauth2.googleapis.com/token?code=1/FTSUyYTgU2AG8K-ZsgjVi6pExdmpZejXfoYIchp9KuhtdknEMd6uYCfqMOoX2f85J&client_id=XXXXXXXXXXXXXXXX.apps.googleusercontent.com&client_secret=YYYYYYYYYYYY&grant_type=authorization_code' \
  -H 'Cache-Control: no-cache' \
  -H 'Content-Type: application/x-www-form-urlencoded'

但这一次，两种方式（Curl 和 Java）我都遇到了相同的错误。

{
  "error" : "invalid_grant",
  "error_description" : "Malformed auth code."
}

我在这个帖子上读到，将 clientId 指定为电子邮件是一个问题，但我还没有发现如何解决它，因为第一次登录是使用客户端 ID“XXXXXXX.apps.googleusercontent.com”完成的，并且如果我设置来自 google 帐户的一封电子邮件，上面写着“未知的 Oauth 客户端”

我希望任何人都可以帮助我，因为我被困了好几天

Answer 1

就我而言，这是非常愚蠢的：google api 更改了请求之间的身份验证代码编码。

步骤 1 - 在第一次请求获取令牌期间，谷歌返回的结果非常正常，而不是编码字符串作为代码。

步骤 2 - 在第二个和第 N 个获取令牌的请求期间（如果它们没有被撤销），Google 将返回 url 编码的身份验证代码。就我而言，致命的变化是“/”->“%2F”。

解决方案：在将身份验证代码交换为访问令牌之前，始终对身份验证代码进行 URL 解码！

Answer 2

这是授权授予流程。为了简单起见，它如下。我请求网络应用程序的访问令牌。就我而言，致命的更改是“%2F”到“/”。这应该有效

Answer 3

最后，我实现了根据需要刷新访问令牌。问题在于对 Google Api 工作方式的误解。

第一次更新令牌时，需要使用这些参数调用此端点，并将从同意屏幕调用的响应中获取的值设置为 {{refreshToken}} (serverAuthCode)

https://oauth2.googleapis.com/token?code={{refreshToken}}&client_id={{googleClientId}}&client_secret={{googleClientSecret}}&grant_type=authorization_code

第一次刷新后，对令牌的任何更新都需要通过将从第一次调用的响应中获取的属性 {{refresh_token}} 设置为 {{tokenUpdated}} 来调用此另一个端点。

https://oauth2.googleapis.com/token?refresh_token={{tokenUpdated}}&client_id={{googleClientId}}&client_secret={{googleClientSecret}}&grant_type=refresh_token

这里我向您展示我的 AuthenticationService 的示例

import { Injectable} from '@angular/core';
import { Router } from '@angular/router';
import { GooglePlus } from '@ionic-native/google-plus/ngx';

@Injectable({
  providedIn: 'root'
})
export class AuthenticationService {


static AUTH_INFO_GOOGLE = 'auth-info-google';
static CLIENT_ID = 'XXXXX-XXXX.apps.googleusercontent.com';
static CLIENT_SECRET = 'SecretPasswordClientId';


public authenticationState = new BehaviorSubject(false);

  constructor(
    private router: Router,
    private googlePlus: GooglePlus) {

  }

public isAuthenticated() {
    return this.authenticationState.value;
}

public logout(): Promise<void> {
    this.authenticationState.next(false);   
    return this.googlePlus.disconnect()
    .then(msg => {
      console.log('User logged out: ' + msg);
    }, err => {
      console.log('User already disconected');
    }); 
}

/**
* Performs the login
*/
public async login(): Promise<any> {
    return this.openGoogleConsentScreen().then(async (user) => {
      console.log(' ServerAuth Code: ' + user.serverAuthCode);
      user.updated = false;
      await this.setData(AuthenticationService.AUTH_INFO_GOOGLE, JSON.stringify(user));
      this.authenticationState.next(true);
      // Do more staff after successfully login
    }, err => {
        this.authenticationState.next(false);
        console.log('An error ocurred in the login process: ' + err);
        console.log(err);
    });

}

  /**
   * Gets the Authentication Token
   */
public async getAuthenticationToken(): Promise<string> {
      return this.getAuthInfoGoogle()
        .then(auth => {
          if (this.isTokenExpired(auth)) {
            return this.refreshToken(auth);
          } else {
            return 'Bearer ' + auth.accessToken;
          }
        });
}



private async openGoogleConsentScreen(): Promise<any> {
  return this.googlePlus.login({
    // optional, space-separated list of scopes, If not included or empty, defaults to `profile` and `email`.
    'scopes': 'profile email openid',
    'webClientId': AuthenticationService.CLIENT_ID,
    'offline': true
  });
}

private isTokenExpired(auth: any): Boolean {
    const expiresIn = auth.expires - (Date.now() / 1000);
     const extraSeconds = 60 * 59 + 1;
    // const extraSeconds = 0;
    const newExpiration = expiresIn - extraSeconds;
     console.log('Token expires in ' + newExpiration + ' seconds. Added ' + extraSeconds + ' seconds for debugging purpouses');
    return newExpiration < 0;
}

private async refreshToken(auth: any): Promise<any> {
      console.log('The authentication token has expired. Calling for renewing');
      if (auth.updated) {
        auth = await this.requestGoogleRefreshToken(auth.serverAuthCode, auth.userId, auth.email);
      } else {
        auth = await this.requestGoogleAuthorizationCode(auth.serverAuthCode, auth.userId, auth.email);
      }
      await this.setData(AuthenticationService.AUTH_INFO_GOOGLE, JSON.stringify(auth));
      return 'Bearer ' + auth.accessToken;
}


private getAuthInfoGoogle(): Promise<any> {
    return this.getData(AuthenticationService.AUTH_INFO_GOOGLE)
    .then(oauthInfo => {
      return JSON.parse(oauthInfo);
    }, err => {
      this.clearStorage();
      throw err;
    });
}

private async requestGoogleAuthorizationCode(serverAuthCode: string, userId: string, email: string): Promise<any> {
    let headers = new HttpHeaders();
    headers = headers.set('Content-Type', 'application/x-www-form-urlencoded');
    let params: HttpParams = new HttpParams();
    params = params.set('code', serverAuthCode);
    params = params.set('client_id', AuthenticationService.CLIENT_ID);
    params = params.set('client_secret', AuthenticationService.CLIENT_SECRET);
    params = params.set('grant_type', 'authorization_code');
    const options = {
      headers: headers,
      params: params
    };
    const url = 'https://oauth2.googleapis.com/token';
    const renewalTokenRequestPromise: Promise<any> = this.http.post(url, {}, options).toPromise()
      .then((response: any) => {
        const auth: any = {};
        auth.accessToken = response.access_token;
        console.log('RefreshToken: ' + response.refresh_token);
        auth.serverAuthCode = response.refresh_token;
        auth.expires = Date.now() / 1000 + response.expires_in;
        auth.userId = userId;
        auth.email = email;
        auth.updated = true;
        return auth;
      }, (error) => {
        console.error('Error renewing the authorization code: ' + JSON.stringify(error));
        return {};
      });
    return await renewalTokenRequestPromise;
}

private async requestGoogleRefreshToken(serverAuthCode: string, userId: string, email: string): Promise<any> {
    let headers = new HttpHeaders();
    headers = headers.set('Content-Type', 'application/x-www-form-urlencoded');
    let params: HttpParams = new HttpParams();
    params = params.set('refresh_token', serverAuthCode);
    params = params.set('client_id', AuthenticationService.CLIENT_ID);
    params = params.set('client_secret', AuthenticationService.CLIENT_SECRET);
    params = params.set('grant_type', 'refresh_token');
    const options = {
      headers: headers,
      params: params
    };
    const url = 'https://oauth2.googleapis.com/token';
    const renewalTokenRequestPromise: Promise<any> = this.http.post(url, {}, options).toPromise()
      .then((response: any) => {
        const auth: any = {};
        auth.accessToken = response.access_token;
        console.log('RefreshToken: ' + serverAuthCode);
        auth.serverAuthCode = serverAuthCode;
        auth.expires = Date.now() / 1000 + response.expires_in;
        auth.userId = userId;
        auth.email = email;
        auth.updated = true;
        return auth;
      }, (error) => {
        console.error('Error renewing refresh token: ' + JSON.stringify(error));
        return {};
      });
    return await renewalTokenRequestPromise;
}

private setData(key: string, value: any): Promise<any> {
    console.log('Store the value at key entry in the DDBB, Cookies, LocalStorage, etc')
}

private getData(key: string): Promise<string> {
    console.log('Retrieve the value from the key entry from DDBB, Cookies, LocalStorage, etc')
}

private clearStorage(): Promise<string> {
    console.log('Remove entries from DDBB, Cookies, LocalStorage, etc related to authentication')
}



}