S3 allow public directory listing of parent folder?

问题

I currently have public permissions for one of my S3 buckets like so:

{
    "Version": "2012-10-17",
    "Id": "Policy1493660686651",
    "Statement": [
        {
            "Sid": "Stmt1493660682556",
            "Effect": "Allow",
            "Principal": "*",
            "Action": "s3:GetObject",
            "Resource": "arn:aws:s3:::polodata/*"
        }
    ]
}

When a user navigates to a specific file like: https://s3-us-west-2.amazonaws.com/polodata/ETHBTC.csv, it prompts the user to download -- which is fine. However, when they navigate to: https://s3-us-west-2.amazonaws.com/polodata/ (without the file specified), it returns an XML page.

What do I need to change so that the latter returns a directory listing page?

回答1:

You won't get a directory listing page out of Amazon S3 when accessing the URL. The closest is the XML list of objects, for which you must grant ListObjects permission on the bucket policy. It looks like this:

This XML file does not appear to have any style information associated with it. The document tree is shown below.

<ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
  <Name>my-bucket</Name>
  <Prefix/>
  <Marker/>
  <MaxKeys>1000</MaxKeys>
  <IsTruncated>false</IsTruncated>
  <Contents>
    <Key>foo.txt</Key>
    <LastModified>2017-05-01T21:07:13.000Z</LastModified>
    <ETag>"9311482f31be49fb2f41be9e16097a9c"</ETag>
    <Size>213</Size>
    <StorageClass>STANDARD</StorageClass>
  </Contents>
  <Contents>
    <Key>my-folder/</Key>
    <LastModified>2017-05-01T21:07:18.000Z</LastModified>
    <ETag>"d41d8cd98f00b204e9800998ecf8427e"</ETag>
    <Size>0</Size>
    <StorageClass>STANDARD</StorageClass>
  </Contents>
  <Contents>
    <Key>my-folder/bar.txt</Key>
    <LastModified>2017-05-01T21:07:30.000Z</LastModified>
    <ETag>"9311482f31be49fb2f41be9e16097a9c"</ETag>
    <Size>213</Size>
    <StorageClass>STANDARD</StorageClass>
  </Contents>
</ListBucketResult>

Some people have come up with creative ways of simulating a directory listing, eg: Directory Listing in S3 Static Website

Remember -- Amazon S3 isn't a traditional web server. It's an object storage service that can also serve content to the Internet. So, it won't behave exactly the same as a normal web server.

See also: How Do I Configure an S3 Bucket for Static Website Hosting?

来源：https://stackoverflow.com/questions/43724644/s3-allow-public-directory-listing-of-parent-folder

标签

amazon-web-services

amazon-s3