1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 15:17:36 +00:00

LibWeb: Add definitions from '2.2.6. Responses' in the Fetch spec

This commit is contained in:
Linus Groh 2022-07-16 17:55:29 +01:00
parent 0abc21132a
commit 8da3914bdc
4 changed files with 408 additions and 0 deletions

View file

@ -0,0 +1,153 @@
/*
* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Fetch/Infrastructure/HTTP/Responses.h>
namespace Web::Fetch {
// https://fetch.spec.whatwg.org/#ref-for-concept-network-error%E2%91%A3
// A network error is a response whose status is always 0, status message is always
// the empty byte sequence, header list is always empty, and body is always null.
Response Response::aborted_network_error()
{
auto response = network_error();
response.set_aborted(true);
return response;
}
Response Response::network_error()
{
Response response;
response.set_status(0);
response.set_type(Type::Error);
VERIFY(!response.body().has_value());
return response;
}
// https://fetch.spec.whatwg.org/#concept-aborted-network-error
bool Response::is_aborted_network_error() const
{
// A response whose type is "error" and aborted flag is set is known as an aborted network error.
return m_type == Type::Error && m_aborted;
}
// https://fetch.spec.whatwg.org/#concept-network-error
bool Response::is_network_error() const
{
// A response whose type is "error" is known as a network error.
return m_type == Type::Error;
}
// https://fetch.spec.whatwg.org/#concept-response-url
Optional<AK::URL const&> Response::url() const
{
// A response has an associated URL. It is a pointer to the last URL in responses URL list and null if responses URL list is empty.
if (m_url_list.is_empty())
return {};
return m_url_list.last();
}
// https://fetch.spec.whatwg.org/#concept-response-location-url
ErrorOr<Optional<AK::URL>> Response::location_url(Optional<String> const& request_fragment) const
{
// The location URL of a response response, given null or an ASCII string requestFragment, is the value returned by the following steps. They return null, failure, or a URL.
// 1. If responses status is not a redirect status, then return null.
if (!is_redirect_status(m_status))
return Optional<AK::URL> {};
// FIXME: 2. Let location be the result of extracting header list values given `Location` and responses header list.
auto location_value = ByteBuffer {};
// 3. If location is a header value, then set location to the result of parsing location with responses URL.
auto location = AK::URL { StringView { location_value } };
if (!location.is_valid())
return Error::from_string_view("Invalid 'Location' header URL"sv);
// 4. If location is a URL whose fragment is null, then set locations fragment to requestFragment.
if (location.fragment().is_null())
location.set_fragment(request_fragment.value_or({}));
// 5. Return location.
return location;
}
FilteredResponse::FilteredResponse(Response& internal_response)
: m_internal_response(internal_response)
{
}
FilteredResponse::~FilteredResponse()
{
}
ErrorOr<BasicFilteredResponse> BasicFilteredResponse::create(Response& internal_response)
{
// A basic filtered response is a filtered response whose type is "basic" and header list excludes
// any headers in internal responses header list whose name is a forbidden response-header name.
HeaderList header_list;
for (auto const& header : internal_response.header_list()) {
if (!is_forbidden_response_header_name(header.name))
TRY(header_list.append(header));
}
return BasicFilteredResponse(internal_response, move(header_list));
}
BasicFilteredResponse::BasicFilteredResponse(Response& internal_response, HeaderList header_list)
: FilteredResponse(internal_response)
, m_header_list(move(header_list))
{
}
ErrorOr<CORSFilteredResponse> CORSFilteredResponse::create(Response& internal_response)
{
// A CORS filtered response is a filtered response whose type is "cors" and header list excludes
// any headers in internal responses header list whose name is not a CORS-safelisted response-header
// name, given internal responses CORS-exposed header-name list.
Vector<ReadonlyBytes> cors_exposed_header_name_list;
for (auto const& header_name : internal_response.cors_exposed_header_name_list())
cors_exposed_header_name_list.append(header_name.span());
HeaderList header_list;
for (auto const& header : internal_response.header_list()) {
if (is_cors_safelisted_response_header_name(header.name, cors_exposed_header_name_list))
TRY(header_list.append(header));
}
return CORSFilteredResponse(internal_response, move(header_list));
}
CORSFilteredResponse::CORSFilteredResponse(Response& internal_response, HeaderList header_list)
: FilteredResponse(internal_response)
, m_header_list(move(header_list))
{
}
OpaqueFilteredResponse OpaqueFilteredResponse::create(Response& internal_response)
{
// An opaque-redirect filtered response is a filtered response whose type is "opaqueredirect",
// status is 0, status message is the empty byte sequence, header list is empty, and body is null.
return OpaqueFilteredResponse(internal_response);
}
OpaqueFilteredResponse::OpaqueFilteredResponse(Response& internal_response)
: FilteredResponse(internal_response)
{
}
OpaqueRedirectFilteredResponse OpaqueRedirectFilteredResponse::create(Response& internal_response)
{
return OpaqueRedirectFilteredResponse(internal_response);
}
OpaqueRedirectFilteredResponse::OpaqueRedirectFilteredResponse(Response& internal_response)
: FilteredResponse(internal_response)
{
}
}