c# - AWS S3 ListMultipartUploads : access denied

Question

我关注了this blog为了使用 Web Identity Federation 设置我的 AWS IAM 和 S3 帐户。我能够很好地验证和接收 session 凭据和 token 。我还可以下载和上传对象。但是，我得到:

access denied

在以下 ListMultipartUploads 请求中:

var request = new ListMultipartUploadsRequest()
{
    BucketName = bucketName,
    Prefix = $"{UserId}/"
};

var response = await s3Client.ListMultipartUploadsAsync(request);

附加到我的 IAM 角色的访问策略是:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "s3:AbortMultipartUpload",
                "s3:DeleteObject",
                "s3:GetObject",
                "s3:PutObject"
            ],
            "Resource": "arn:aws:s3:::mybucket/${myidentityprovider:userId}/*"
        },
        {
            "Effect": "Allow",
            "Action": [
                "s3:ListBucket",
                "s3:ListBucketMultipartUploads"
            ],
            "Resource": [
                "arn:aws:s3:::mybucket"
            ],
            "Condition": {
                "StringLike": {
                    "s3:prefix": "${myidentityprovider:userId}/"
                }
            }
        }
    ]
}

如您所见，我拥有“s3:ListBucketMultipartUploads”权限，因此用户应该能够对他们的存储桶执行 ListMultiPartUploads。我做错了什么？

Answer 1

我在你的前缀语句中看到一个错误，

需要是一个数组，

"s3:prefix": ["${myidentityprovider:userId}/*"]

{
"Version": "2012-10-17",
"Statement": [
    {
        "Effect": "Allow",
        "Action": [
            "s3:AbortMultipartUpload",
            "s3:DeleteObject",
            "s3:GetObject",
            "s3:PutObject"
        ],
        "Resource": "arn:aws:s3:::mybucket/${myidentityprovider:userId}/*"
    },
    {
        "Effect": "Allow",
        "Action": [
            "s3:ListBucket",
            "s3:ListBucketMultipartUploads"
        ],
        "Resource": [
            "arn:aws:s3:::mybucket"
        ],
        "Condition": {
            "StringLike": {
                "s3:prefix": ["${myidentityprovider:userId}/*"]
            }
        }
    }
]}