Request Syntax URI Request Parameters Request Body Response Syntax Response Elements Examples See Also

GetBucketPolicy

Returns the policy of a specified bucket. If you are using an identity other than the root user of the Amazon Web Services account that owns the bucket, the calling identity must have the GetBucketPolicy permissions on the specified bucket and belong to the bucket owner's account in order to use this operation.

If you don't have GetBucketPolicy permissions, Amazon S3 returns a 403 Access Denied error. If you have the correct permissions, but you're not using an identity that belongs to the bucket owner's account, Amazon S3 returns a 405 Method Not Allowed error.

Important

To ensure that bucket owners don't inadvertently lock themselves out of their own buckets, the root principal in a bucket owner's Amazon Web Services account can perform the GetBucketPolicy, PutBucketPolicy, and DeleteBucketPolicy API actions, even if their bucket policy explicitly denies the root principal's access. Bucket owner root principals can only be blocked from performing these API actions by VPC endpoint policies and Amazon Organizations policies.

To use this API operation against an access point, provide the alias of the access point in place of the bucket name.

To use this API operation against an Object Lambda access point, provide the alias of the Object Lambda access point in place of the bucket name. If the Object Lambda access point alias in a request is not valid, the error code InvalidAccessPointAliasError is returned. For more information about InvalidAccessPointAliasError, see List of Error Codes.

For more information about bucket policies, see Using Bucket Policies and User Policies.

The following action is related to GetBucketPolicy:

GetObject

Request Syntax


GET /?policy HTTP/1.1
Host: Bucket.s3.amazonaws.com
x-amz-expected-bucket-owner: ExpectedBucketOwner

URI Request Parameters

The request uses the following URI parameters.

Bucket

The bucket name for which to get the bucket policy.

To use this API operation against an access point, provide the alias of the access point in place of the bucket name.

Required: Yes

x-amz-expected-bucket-owner

The account ID of the expected bucket owner. If the bucket is owned by a different account, the request fails with the HTTP status code 403 Forbidden (access denied).

Request Body

The request does not have a request body.

Response Syntax


HTTP/1.1 200

{ Policy in JSON format }

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

Policy

Examples

Sample Request

The following request returns the policy of the specified bucket.



           GET ?policy HTTP/1.1
           Host: bucket.s3.<Region>.amazonaws.com
           Date: Wed, 28 Oct 2009 22:32:00 GMT
           Authorization: authorization string

Sample Response

This example illustrates one usage of GetBucketPolicy.



            HTTP/1.1 200 OK  
            x-amz-id-2: Uuag1LuByru9pO4SAMPLEAtRPfTaOFg==  
            x-amz-request-id: 656c76696e67SAMPLE57374  
            Date: Tue, 04 Apr 2010 20:34:56 GMT  
            Connection: keep-alive  
            Server: AmazonS3    


            {
            "Version":"2008-10-17",
            "Id":"aaaa-bbbb-cccc-dddd",
            "Statement" : [
                {
                    "Effect":"Deny",
                    "Sid":"1", 
                    "Principal" : {
                       "AWS":["111122223333","444455556666"]
                    },
                    "Action":["s3:*"],
                    "Resource":"arn:aws:s3:::bucket/*"
                }
             ] 
            }