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LibWeb: Support for Access-Control-Expose-Headers in Fetch

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This adds the headers named in Access-Control-Expose-Headers to the
response's CORS-exposed header-name list which allows those headers to
be accessed from JS.
This commit is contained in:
Simon McMahon 2023-08-01 21:40:30 +12:00 • committed by Linus Groh
parent 15440b156f
commit 3a1f510af0
3 changed files with 36 additions and 7 deletions
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17
Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.cpp
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@ -53,6 +53,23 @@ JS::NonnullGCPtr<HeaderList> HeaderList::create(JS::VM& vm)
return vm.heap().allocate_without_realm<HeaderList>();
}
// Non-standard
ErrorOr<Vector<ByteBuffer>> HeaderList::unique_names() const
{
Vector<ByteBuffer> header_names_set;
HashTable<ReadonlyBytes, CaseInsensitiveBytesTraits<u8 const>> header_names_seen;
for (auto const& header : *this) {
if (header_names_seen.contains(header.name))
continue;
auto bytes = TRY(ByteBuffer::copy(header.name));
TRY(header_names_seen.try_set(header.name));
TRY(header_names_set.try_append(move(bytes)));
}
return header_names_set;
}
// https://fetch.spec.whatwg.org/#header-list-contains
bool HeaderList::contains(ReadonlyBytes name) const
{