Question

我有一个cognito userpool，我可以使用以下代码成功登录我的应用程序：

const authData = {
        ClientId : '2222222222222', // Your client id here
        AppWebDomain : '1111111111.auth.us-east-1.amazoncognito.com',
        TokenScopesArray : ['openid'],
        RedirectUriSignIn : 'https://app.domain.com',
        RedirectUriSignOut : 'https://app.domain.com'
    };
    const CognitoAuth = AmazonCognitoIdentity.CognitoAuth;

    const auth = new CognitoAuth(authData);



    auth.userhandler = {
        /**onSuccess: <TODO: your onSuccess callback here>,
         onFailure: <TODO: your onFailure callback here>*/

        onSuccess: function(result: any) {
            console.log("COGNITO SUCCESS!");
            console.log(result);
        },
        onFailure: function(err: any) {
            console.log("COGNITO FAIL!");
            console.log(err);
        }
    };

    auth.getSession();

    const curUrl = window.location.href;
    auth.parseCognitoWebResponse(curUrl);

我现在有一个auth对象，我想为我所拥有的aws-sdk提供某种凭证，以便我可以将项目列入S3存储桶，假设我的附加角色中有正确的策略。

类似的东西，但意识到这不起作用：

AWS.config.credentials = auth.toCredentials();  //<== hoping for magic
const s3 = new AWS.S3();
s3.listObjectsV2(listObjectsV2Params, function(err: any, data: any) {
        if (err) console.log(err, err.stack); // an error occurred
        else     console.log(data.Contents[0]);           // successful response
    });

这是可能的，如果可以的话，我该怎么做？

UDPATE

接受的答案有效并且是一个很大的帮助，为了清晰起见，我遇到了一些麻烦。

const creds = new AWS.CognitoIdentityCredentials({
                IdentityPoolId: 'us-east-1:b111111-1111-1111-1111-1111111',  // <-- This is in your Federated Identity if you have that set up, you have to "edit" the identity pool to get it, logging into cognito its a different screen.
                Logins: {
                    "cognito-idp.us-east-1.amazonaws.com/us-east-1_BBBB1BBBBV2B": result.idToken.jwtToken  // <- this login [POOL ID] is not the pool ARN, you need it in this format.
                }
            });

this link helped me.

Answer 1

这是可能的，以下是步骤。

要允许AWS Userpool用户访问AWS资源，还需要配置将UserPool注册为提供程序的AWS Identity Pool。
为经过身份验证的用户分配的IAM角色需要具有S3访问权限。

使用AWS SDK for Identity Pool，可以将UserPools JWT令牌交换为临时AccessKey和SecretKey，以使用AWS SDK for S3。

    AWS.config.credentials = new AWS.CognitoIdentityCredentials({
      IdentityPoolId: IDENTITY_POOL_ID,
      Logins: {
        [USER_POOL_TOKEN]: result.idToken.jwtToken
      }
    });

    AWS.config.credentials.refresh((error) => {
      if (error) {
        console.error(error);
      } else {
        console.log('Successfully logged!');
      }
    });

在 AWS.config.credentials.refresh 回调中，您可以调用S3，因为该方法将在内部处理获取时态凭据。

如何将CognitoAuth auth对象转换为AWS-SDK凭据

UDPATE

1 个答案: