def canonical_uri(self, http_request): # S3 does **NOT** do path normalization that SigV4 typically does. # Urlencode the path, **NOT** ``auth_path`` (because vhosting). path = urlparse(http_request.path) # Because some quoting may have already been applied, let's back it out. unquoted = unquote(path.path) # Requote, this time addressing all characters. encoded = quote(unquoted) return encoded
def mangle_path_and_params(self, req): """ Returns a copy of the request object with fixed ``auth_path/params`` attributes from the original. """ modified_req = copy.copy(req) # Unlike the most other services, in S3, ``req.params`` isn't the only # source of query string parameters. # Because of the ``query_args``, we may already have a query string # **ON** the ``path/auth_path``. # Rip them apart, so the ``auth_path/params`` can be signed # appropriately. parsed_path = urlparse(modified_req.auth_path) modified_req.auth_path = parsed_path.path if modified_req.params is None: modified_req.params = {} else: # To keep the original request object untouched. We must make # a copy of the params dictionary. Because the copy of the # original request directly refers to the params dictionary # of the original request. copy_params = req.params.copy() modified_req.params = copy_params raw_qs = parsed_path.query existing_qs = parse_qs( raw_qs, keep_blank_values=True ) # ``parse_qs`` will return lists. Don't do that unless there's a real, # live list provided. for key, value in existing_qs.items(): if isinstance(value, (list, tuple)): if len(value) == 1: existing_qs[key] = value[0] modified_req.params.update(existing_qs) return modified_req