S3 / Client / get_bucket_cors

get_bucket_cors#

S3.Client.get_bucket_cors(**kwargs)#

Returns the Cross-Origin Resource Sharing (CORS) configuration information set for the bucket.

To use this operation, you must have permission to perform the s3:GetBucketCORS action. By default, the bucket owner has this permission and can grant it to others.

For more information about CORS, see Enabling Cross-Origin Resource Sharing.

The following operations are related to GetBucketCors:

See also: AWS API Documentation

Request Syntax

response = client.get_bucket_cors(
    Bucket='string',
    ExpectedBucketOwner='string',
    MirrorDestination='string'
)
Parameters:

  • Bucket (string) –

    [REQUIRED]

    The bucket name for which to get the cors configuration.

  • ExpectedBucketOwner (string) – Ignored by COS if present.

  • MirrorDestination (string) – Mirror source for object reads.

Return type:

dict

Returns:

Response Syntax

{
    'CORSRules': [
        {
            'ID': 'string',
            'AllowedHeaders': [
                'string',
            ],
            'AllowedMethods': [
                'string',
            ],
            'AllowedOrigins': [
                'string',
            ],
            'ExposeHeaders': [
                'string',
            ],
            'MaxAgeSeconds': 123
        },
    ]
}

Response Structure

  • (dict) –

    • CORSRules (list) –

      A set of origins and methods (cross-origin access that you want to allow). You can add up to 100 rules to the configuration.

      • (dict) –

        Specifies a cross-origin access rule for an Amazon S3 bucket.

        • ID (string) –

          Unique identifier for the rule. The value cannot be longer than 255 characters.

        • AllowedHeaders (list) –

          Headers that are specified in the Access-Control-Request-Headers header. These headers are allowed in a preflight OPTIONS request. In response to any preflight OPTIONS request, Amazon S3 returns any requested headers that are allowed.

          • (string) –

        • AllowedMethods (list) –

          An HTTP method that you allow the origin to execute. Valid values are GET, PUT, HEAD, POST, and DELETE.

          • (string) –

        • AllowedOrigins (list) –

          One or more origins you want customers to be able to access the bucket from.

          • (string) –

        • ExposeHeaders (list) –

          One or more headers in the response that you want customers to be able to access from their applications (for example, from a JavaScript XMLHttpRequest object).

          • (string) –

        • MaxAgeSeconds (integer) –

          The time in seconds that your browser is to cache the preflight response for the specified resource.

Examples

The following example returns cross-origin resource sharing (CORS) configuration set on a bucket.

response = client.get_bucket_cors(
    Bucket='examplebucket',
)

print(response)

Expected Output:

{
    'CORSRules': [
        {
            'AllowedHeaders': [
                'Authorization',
            ],
            'AllowedMethods': [
                'GET',
            ],
            'AllowedOrigins': [
                '*',
            ],
            'MaxAgeSeconds': 3000,
        },
    ],
    'ResponseMetadata': {
        '...': '...',
    },
}