AWS S3 存储桶策略 - 仅允许文件夹中的某些文件类型

Question

我的存储桶中有一个特定文件夹，我想将其限制为仅某些文件类型。我目前有以下内容：

{
    "Version": "2012-10-17",
    "Id": "Policy1464968545158",
    "Statement": [
        {
            "Sid": "Stmt1464968483619",
            "Effect": "Deny",
            "Principal": "*",
            "Action": "s3:PutObject",
            "Resource": [
                "arn:aws:s3:::my-bucket/my-folder/*"
            ]
            "Condition": {
                "StringNotEquals": {
                  "s3:prefix": ".txt",
                  "s3:prefix": ".doc"
                }
            },
        }
    ]
}

我需要一些东西来替换 s3:prefix 这样系统就不会查看文件和路径的开头，而是查看结尾。我试过 s3:suffix，但这不是有效的属性。

是否有 S3 属性在文件名末尾进行通配符搜索，以便我可以仅将文件夹的某些文件类型列入白名单？

Answer 1

您应该可以使用通配符在 Resource 中定义它。如果您希望文件夹仅限于 .txt 和 .doc，请使用 Effect: Allow。

{
    "Version": "2012-10-17",
    "Id": "Policy1464968545158",
    "Statement": [
        {
            "Sid": "Stmt1464968483619",
            "Effect": "Allow",
            "Principal": "*",
            "Action": "s3:PutObject",
            "Resource": [
                "arn:aws:s3:::my-bucket/my-folder/*.doc",
                "arn:aws:s3:::my-bucket/my-folder/*.txt"
            ]
        }
    ]
}

Answer 2

与使用Deny Effect的方法相同，您可以使用allow effect。两个例子如下：

只允许特定的，如果需要则拒绝特定的....

{
  "Version": "2012-10-17",
  "Id": "Policy1464968545158",
  "Statement": [
    {
      "Sid": "Stmt1464968483619",
      "Effect": "Allow",
      "Principal": {
        "AWS": "IAM-USER-ARN"
      },
      "Action": "s3:PutObject",
      "Resource": [
        "arn:aws:s3:::bucket-name/*.doc",
        "arn:aws:s3:::bucket-name/*.txt"
      ]
    },
    {
      "Sid": "Stmt1464968483619",
      "Effect": "Deny",
      "Principal": "*",
      "Action": "s3:PutObject",
      "NotResource": [
        "arn:aws:s3:::bucket-name/*.png",
        "arn:aws:s3:::bucket-name/*.gif"
      ]
    }
  ]
}

AWS S3 存储桶策略 - 仅允许文件夹中的某些文件类型

AWS S3 Bucket Policy - Only Allow Certain File Types In Folder

amazon-s3

amazon-web-services

amazon-iam

aws-access-policy