AWS SDK Version 3 for .NET
API Reference

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Applies an Amazon S3 bucket policy to an Amazon S3 bucket. If you are using an identity other than the root user of the AWS account that owns the bucket, the calling identity must have the PutBucketPolicy permissions on the specified bucket and belong to the bucket owner's account in order to use this operation.

If you don't have PutBucketPolicy 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.

As a security precaution, the root user of the AWS account that owns a bucket can always use this operation, even if the policy explicitly denies the root user the ability to perform this action.

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

The following operations are related to PutBucketPolicy:

Note:

For .NET Core, PCL and Unity this operation is only available in asynchronous form. Please refer to PutBucketPolicyAsync.

Namespace: Amazon.S3
Assembly: AWSSDK.S3.dll
Version: 3.x.y.z

Syntax

C#
public abstract PutBucketPolicyResponse PutBucketPolicy(
         PutBucketPolicyRequest request
)
Parameters
request
Type: Amazon.S3.Model.PutBucketPolicyRequest

Container for the necessary parameters to execute the PutBucketPolicy service method.

Return Value
The response from the PutBucketPolicy service method, as returned by S3.

Examples

This example shows how to Get, Put and Delete bucket policies.

BucketPolicy samples


                // Create a client
                AmazonS3Client client = new AmazonS3Client();

                // Put sample bucket policy (overwrite an existing policy)
                string newPolicy = @"{ 
    ""Statement"":[{ 
    ""Sid"":""BasicPerms"", 
    ""Effect"":""Allow"", 
    ""Principal"": ""*"", 
    ""Action"":[""s3:PutObject"",""s3:GetObject""], 
    ""Resource"":[""arn:aws:s3:::samplebucketname/*""] 
}]}";
                PutBucketPolicyRequest putRequest = new PutBucketPolicyRequest
                {
                    BucketName = "SampleBucket",
                    Policy = newPolicy
                };
                client.PutBucketPolicy(putRequest);


                // Retrieve current policy
                GetBucketPolicyRequest getRequest = new GetBucketPolicyRequest
                {
                    BucketName = "SampleBucket"
                };
                string policy = client.GetBucketPolicy(getRequest).Policy;

                Console.WriteLine(policy);
                Debug.Assert(policy.Contains("BasicPerms"));


                // Delete current policy
                DeleteBucketPolicyRequest deleteRequest = new DeleteBucketPolicyRequest
                {
                    BucketName = "SampleBucket"
                };
                client.DeleteBucketPolicy(deleteRequest);


                // Retrieve current policy and verify that it is null
                policy = client.GetBucketPolicy(getRequest).Policy;
                Debug.Assert(policy == null);

                

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

Unity:
Supported Versions: 4.6 and above
Supported Platforms: Android, iOS, Standalone

See Also