amazon-cognito - AWS Cognito 外部用户池身份提供商 (OIDC)

Question

我正在使用与外部提供商 (Twitch) 集成的 Cognito App Client用户身份验证工作正常，但由于来自 auth 服务器的代码被 Cognito 使用，我不确定我应该如何发送带有 token 的 Twitch 请求，我通常会从 twitch 获得我 Cognito 不会使用此代码。我只有 Cognito 代码，我可以在 https://{my-domain}/oauth2/token 请求中使用它来换取 Cognito token 。请求返回 id_token、access_token 和 refresh_token，解码后的样子身份证

{
  "at_hash": "yTNkeTAqzqcXCYi3yLL2Pw",
  "sub": "3cfba641-4058-475f-9818-17291175fd31",
  "cognito:groups": [
    "us-east-1_xxxxxxxxxxxx"
  ],
  "iss": "https://cognito-idp.us-east-1.amazonaws.com/us-east-1_xxxxxxxxxxxx",
  "cognito:username": "xxxxxxxxxxxx",
  "preferred_username": "xxxxxxxxxxxx",
  "nonce": "SxxlipCDVbXbcXa1H7Uf9_nM0uOurAAObUVCyreBDDux99QoAngUoiGdE0me-0Zon6fEVLLTSqD4EN1Y6_lFm48MaoBaxyywZCQKOT70gfQEfkuhlsjImJd1ko3qH3QKdlmvWSPCUZoACPYNSgR364VPELyQTVMkRTCt9eYROag",
  "aud": "35l1cn53cnj9sv1ndu8u01amk0",
  "identities": [
    {
      "userId": "xxxxxxxxxxxx",
      "providerName": "xxxxxxxxxxxx",
      "providerType": "OIDC",
      "issuer": null,
      "primary": "true",
      "dateCreated": "1588191000072"
    }
  ],
  "token_use": "id",
  "auth_time": 1588191003,
  "exp": 1588194603,
  "iat": 1588191003
}

访问 token

{
  "sub": "3cfba641-4058-475f-9818-17291175fd31",
  "cognito:groups": [
    "us-east-1_xxxxxxxxxxxx"
  ],
  "token_use": "access",
  "scope": "aws.cognito.signin.user.admin phone openid profile email",
  "auth_time": 1588191003,
  "iss": "https://cognito-idp.us-east-1.amazonaws.com/us-east-1_xxxxxxxxxxxx",
  "exp": 1588194603,
  "iat": 1588191003,
  "version": 2,
  "jti": "55863213-c764-4b07-a386-a9c93d14e4b2",
  "client_id": "xxxxxxxxxxxx",
  "username": "xxxxxxxxxxxx"
}

如何获取用户 token 以调用 Twitch API(例如 GET https://api.twitch.tv/helix/users 具有授权用户 token 的端点)

Answer 1

注意 - 如果操作不当，您会将敏感属性暴露给客户端。

您需要创建 2 个版本的属性 - custom 和 dev:custom，将 oidc 提供程序属性映射到 custom 属性(看起来像 dev:custom 不可映射)，然后在 TokenGeneration_HostedAuth 触发器中，您需要获取这些 custom 属性，设置 dev:custom 的，然后删除 custom。

似乎是一种调整，但我看不到另一种方法可以做到这一点并确保 token 安全。

解决方案是在您的用户池中创建自定义属性，然后为身份提供商映射这些属性。看起来像:

'custom:refresh_token': refresh_token
'custom:id_token': id_token
'custom:access_token': access_token

Cloudformation 模板:

用户池

....
Schema: [
    {
        AttributeDataType: 'String',
        DeveloperOnlyAttribute: true,
        Mutable: true,
        Name: 'refresh_token',
        Required: false,
    },
    {
        AttributeDataType: 'String',
        DeveloperOnlyAttribute: true,
        Mutable: true,
        Name: 'access_token',
        Required: false,
    },
    {
        AttributeDataType: 'String',
        DeveloperOnlyAttribute: true,
        Mutable: true,
        Name: 'id_token',
        Required: false,
    },
    {
        AttributeDataType: 'String',
        Mutable: true,
        Name: 'refresh_token',
        Required: false,
    },
    {
        AttributeDataType: 'String',
        Mutable: true,
        Name: 'access_token',
        Required: false,
    },
    {
        AttributeDataType: 'String',
        Mutable: true,
        Name: 'id_token',
        Required: false,
    },
],
....

用户池身份提供者

....
AttributeMapping: {
    'custom:refresh_token': 'refresh_token',
    'custom:access_token': 'access_token',
    'custom:id_token': 'id_token',
},
....