LibWeb: Heap-allocate returned Fetch::Infrastructure::{Request,Response}

A Request/Response instance should always be heap-allocated and have
clear ownership, so let's also wrap it in a NonnullOwnPtr instead of
putting them on the stack.

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.cpp

@@ -158,14 +158,14 @@ ErrorOr<ByteBuffer> Request::byte_serialize_origin() const
 }
 
 // https://fetch.spec.whatwg.org/#concept-request-clone
-Request Request::clone() const
+NonnullOwnPtr<Request> Request::clone() const
 {
     // To clone a request request, run these steps:
 
     // 1. Let newRequest be a copy of request, except for its body.
     BodyType body;
     swap(body, const_cast<BodyType&>(m_body));
-    auto new_request = *this;
+    auto new_request = adopt_own(*new Infrastructure::Request(*this));
     swap(body, const_cast<BodyType&>(m_body));
 
     // FIXME: 2. If request’s body is non-null, set newRequest’s body to the result of cloning request’s body.

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.h

@@ -284,7 +284,7 @@ public:
     [[nodiscard]] String serialize_origin() const;
     [[nodiscard]] ErrorOr<ByteBuffer> byte_serialize_origin() const;
 
-    [[nodiscard]] Request clone() const;
+    [[nodiscard]] NonnullOwnPtr<Request> clone() const;
 
     [[nodiscard]] ErrorOr<void> add_range_reader(u64 first, Optional<u64> const& last);
 

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.cpp

@@ -12,19 +12,19 @@ namespace Web::Fetch::Infrastructure {
 // 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()
+NonnullOwnPtr<Response> Response::aborted_network_error()
 {
     auto response = network_error();
-    response.set_aborted(true);
+    response->set_aborted(true);
     return response;
 }
 
-Response Response::network_error()
+NonnullOwnPtr<Response> Response::network_error()
 {
-    Response response;
-    response.set_status(0);
-    response.set_type(Type::Error);
-    VERIFY(!response.body().has_value());
+    auto response = make<Response>();
+    response->set_status(0);
+    response->set_type(Type::Error);
+    VERIFY(!response->body().has_value());
     return response;
 }
 
@@ -85,7 +85,7 @@ FilteredResponse::~FilteredResponse()
 {
 }
 
-ErrorOr<BasicFilteredResponse> BasicFilteredResponse::create(Response& internal_response)
+ErrorOr<NonnullOwnPtr<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 response’s header list whose name is a forbidden response-header name.
@@ -95,7 +95,7 @@ ErrorOr<BasicFilteredResponse> BasicFilteredResponse::create(Response& internal_
             TRY(header_list.append(header));
     }
 
-    return BasicFilteredResponse(internal_response, move(header_list));
+    return adopt_own(*new BasicFilteredResponse(internal_response, move(header_list)));
 }
 
 BasicFilteredResponse::BasicFilteredResponse(Response& internal_response, HeaderList header_list)
@@ -104,7 +104,7 @@ BasicFilteredResponse::BasicFilteredResponse(Response& internal_response, Header
 {
 }
 
-ErrorOr<CORSFilteredResponse> CORSFilteredResponse::create(Response& internal_response)
+ErrorOr<NonnullOwnPtr<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 response’s header list whose name is not a CORS-safelisted response-header
@@ -119,7 +119,7 @@ ErrorOr<CORSFilteredResponse> CORSFilteredResponse::create(Response& internal_re
             TRY(header_list.append(header));
     }
 
-    return CORSFilteredResponse(internal_response, move(header_list));
+    return adopt_own(*new CORSFilteredResponse(internal_response, move(header_list)));
 }
 
 CORSFilteredResponse::CORSFilteredResponse(Response& internal_response, HeaderList header_list)
@@ -128,11 +128,11 @@ CORSFilteredResponse::CORSFilteredResponse(Response& internal_response, HeaderLi
 {
 }
 
-OpaqueFilteredResponse OpaqueFilteredResponse::create(Response& internal_response)
+NonnullOwnPtr<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);
+    return adopt_own(*new OpaqueFilteredResponse(internal_response));
 }
 
 OpaqueFilteredResponse::OpaqueFilteredResponse(Response& internal_response)
@@ -140,9 +140,9 @@ OpaqueFilteredResponse::OpaqueFilteredResponse(Response& internal_response)
 {
 }
 
-OpaqueRedirectFilteredResponse OpaqueRedirectFilteredResponse::create(Response& internal_response)
+NonnullOwnPtr<OpaqueRedirectFilteredResponse> OpaqueRedirectFilteredResponse::create(Response& internal_response)
 {
-    return OpaqueRedirectFilteredResponse(internal_response);
+    return adopt_own(*new OpaqueRedirectFilteredResponse(internal_response));
 }
 
 OpaqueRedirectFilteredResponse::OpaqueRedirectFilteredResponse(Response& internal_response)

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.h

@@ -44,8 +44,8 @@ public:
         u64 decoded_size { 0 };
     };
 
-    [[nodiscard]] static Response aborted_network_error();
-    [[nodiscard]] static Response network_error();
+    [[nodiscard]] static NonnullOwnPtr<Response> aborted_network_error();
+    [[nodiscard]] static NonnullOwnPtr<Response> network_error();
 
     Response() = default;
     virtual ~Response() = default;
@@ -157,7 +157,7 @@ private:
 };
 
 // https://fetch.spec.whatwg.org/#concept-filtered-response
-class FilteredResponse : protected Response {
+class FilteredResponse : public Response {
 public:
     explicit FilteredResponse(Response&);
     virtual ~FilteredResponse() = 0;
@@ -187,7 +187,7 @@ protected:
 // https://fetch.spec.whatwg.org/#concept-filtered-response-basic
 class BasicFilteredResponse final : public FilteredResponse {
 public:
-    static ErrorOr<BasicFilteredResponse> create(Response&);
+    static ErrorOr<NonnullOwnPtr<BasicFilteredResponse>> create(Response&);
 
     [[nodiscard]] virtual Type type() const override { return Type::Basic; }
     [[nodiscard]] virtual HeaderList const& header_list() const override { return m_header_list; }
@@ -201,7 +201,7 @@ private:
 // https://fetch.spec.whatwg.org/#concept-filtered-response-cors
 class CORSFilteredResponse final : public FilteredResponse {
 public:
-    static ErrorOr<CORSFilteredResponse> create(Response&);
+    static ErrorOr<NonnullOwnPtr<CORSFilteredResponse>> create(Response&);
 
     [[nodiscard]] virtual Type type() const override { return Type::CORS; }
     [[nodiscard]] virtual HeaderList const& header_list() const override { return m_header_list; }
@@ -215,7 +215,7 @@ private:
 // https://fetch.spec.whatwg.org/#concept-filtered-response-opaque
 class OpaqueFilteredResponse final : public FilteredResponse {
 public:
-    static OpaqueFilteredResponse create(Response&);
+    static NonnullOwnPtr<OpaqueFilteredResponse> create(Response&);
 
     [[nodiscard]] virtual Type type() const override { return Type::Opaque; }
     [[nodiscard]] virtual Vector<AK::URL> const& url_list() const override { return m_url_list; }
@@ -235,7 +235,7 @@ private:
 // https://fetch.spec.whatwg.org/#concept-filtered-response-opaque-redirect
 class OpaqueRedirectFilteredResponse final : public FilteredResponse {
 public:
-    static OpaqueRedirectFilteredResponse create(Response&);
+    static NonnullOwnPtr<OpaqueRedirectFilteredResponse> create(Response&);
 
     [[nodiscard]] virtual Type type() const override { return Type::OpaqueRedirect; }
     [[nodiscard]] virtual Status status() const override { return 0; }