Best Python code snippet using localstack_python
s3_utils.py
Source:s3_utils.py  
...244            message="Query-string authentication requires the Signature, Expires and AWSAccessKeyId parameters",245            code_string="AccessDenied",246        )247    elif is_v2 and not is_v4:248        response = authenticate_presign_url_signv2(249            method, path, headers, data, url, query_params, request_dict250        )251    if not is_v4 and any([p in query_params for p in SIGNATURE_V4_PARAMS]):252        response = requests_error_response_xml_signature_calculation(253            code=403,254            message="Query-string authentication requires the X-Amz-Algorithm, \255                X-Amz-Credential, X-Amz-Date, X-Amz-Expires, \256                X-Amz-SignedHeaders and X-Amz-Signature parameters.",257            code_string="AccessDenied",258        )259    elif is_v4 and not is_v2:260        response = authenticate_presign_url_signv4(261            method, path, headers, data, url, query_params, request_dict262        )263    if response is not None:264        LOGGER.info("Presign signature calculation failed: %s" % response)265        return response266    LOGGER.debug("Valid presign url.")267def authenticate_presign_url_signv2(method, path, headers, data, url, query_params, request_dict):268    # Calculating Signature269    aws_request = create_request_object(request_dict)270    credentials = Credentials(271        access_key=TEST_AWS_ACCESS_KEY_ID,272        secret_key=TEST_AWS_SECRET_ACCESS_KEY,273        token=query_params.get("X-Amz-Security-Token", None),274    )275    auth = HmacV1QueryAuth(credentials=credentials, expires=query_params["Expires"][0])276    split = urlsplit(aws_request.url)277    string_to_sign = auth.get_string_to_sign(278        method=method, split=split, headers=aws_request.headers279    )280    signature = auth.get_signature(string_to_sign=string_to_sign)281    # Comparing the signature in url with signature we calculated...Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
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