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LibWeb: Honor User-Agent spoofing in Fetch headers

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This makes spoofing consistent between legacy ResourceLoader loads,
Fetch loads, and the JavaScript `navigator` APIs.
This commit is contained in:
Andreas Kling 2023-12-27 11:43:14 +01:00
parent a30d263522
commit 89da988da1
3 changed files with 4 additions and 4 deletions
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2
Userland/Libraries/LibWeb/Fetch/Fetching/Fetching.cpp
View file

@ -1354,7 +1354,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<PendingResponse>> http_network_or_cache_fet
if (!http_request->header_list()->contains("User-Agent"sv.bytes())) { if (!http_request->header_list()->contains("User-Agent"sv.bytes())) {
auto header = Infrastructure::Header { auto header = Infrastructure::Header {
.name = MUST(ByteBuffer::copy("User-Agent"sv.bytes())), .name = MUST(ByteBuffer::copy("User-Agent"sv.bytes())),
.value = TRY_OR_THROW_OOM(vm, Infrastructure::default_user_agent_value()), .value = Infrastructure::default_user_agent_value(),
}; };
TRY_OR_THROW_OOM(vm, http_request->header_list()->append(move(header))); TRY_OR_THROW_OOM(vm, http_request->header_list()->append(move(header)));
} }

4
Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.cpp
View file

@ -882,10 +882,10 @@ Optional<RangeHeaderValue> parse_single_range_header_value(ReadonlyBytes value)
} }
// https://fetch.spec.whatwg.org/#default-user-agent-value // https://fetch.spec.whatwg.org/#default-user-agent-value
ErrorOr<ByteBuffer> default_user_agent_value() ByteBuffer default_user_agent_value()
{ {
// A default `User-Agent` value is an implementation-defined header value for the `User-Agent` header. // A default `User-Agent` value is an implementation-defined header value for the `User-Agent` header.
return ByteBuffer::copy(default_user_agent.bytes()); return MUST(ByteBuffer::copy(ResourceLoader::the().user_agent().bytes()));
} }
} }

2
Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.h
View file

@ -93,6 +93,6 @@ struct ExtractHeaderParseFailure {
[[nodiscard]] ErrorOr<Optional<Vector<ByteBuffer>>> extract_header_values(Header const&); [[nodiscard]] ErrorOr<Optional<Vector<ByteBuffer>>> extract_header_values(Header const&);
[[nodiscard]] ErrorOr<Variant<Vector<ByteBuffer>, ExtractHeaderParseFailure, Empty>> extract_header_list_values(ReadonlyBytes, HeaderList const&); [[nodiscard]] ErrorOr<Variant<Vector<ByteBuffer>, ExtractHeaderParseFailure, Empty>> extract_header_list_values(ReadonlyBytes, HeaderList const&);
[[nodiscard]] Optional<RangeHeaderValue> parse_single_range_header_value(ReadonlyBytes); [[nodiscard]] Optional<RangeHeaderValue> parse_single_range_header_value(ReadonlyBytes);
[[nodiscard]] ErrorOr<ByteBuffer> default_user_agent_value(); [[nodiscard]] ByteBuffer default_user_agent_value();
} }