diff --git a/Libraries/LibWeb/Crypto/CryptoBindings.cpp b/Libraries/LibWeb/Crypto/CryptoBindings.cpp index 2e7e7bde7fd..bce65d231ba 100644 --- a/Libraries/LibWeb/Crypto/CryptoBindings.cpp +++ b/Libraries/LibWeb/Crypto/CryptoBindings.cpp @@ -1,15 +1,89 @@ /* * Copyright (c) 2024, Andrew Kaster + * Copyright (c) 2024, Altomani Gianluca * * SPDX-License-Identifier: BSD-2-Clause */ +#include +#include #include #include #include #include +#include namespace Web::Bindings { +#define JWK_PARSE_STRING_PROPERTY(name) \ + if (json_object.has_string(#name##sv)) { \ + key.name = TRY_OR_THROW_OOM(vm, String::from_byte_string(*json_object.get_byte_string(#name##sv))); \ + } + +JS::ThrowCompletionOr JsonWebKey::parse(JS::Realm& realm, ReadonlyBytes data) +{ + auto& vm = realm.vm(); + // 1. Let data be the sequence of bytes to be parsed. + + // 2. Let json be the Unicode string that results from interpreting data according to UTF-8. + // 3. Convert json to UTF-16. + auto json = TRY_OR_THROW_OOM(vm, String::from_utf8(data)); + + // 4. Let result be the object literal that results from executing the JSON.parse internal function + // in the context of a new global object, with text argument set to a JavaScript String containing json. + auto maybe_json_value = JsonValue::from_string(json); + if (maybe_json_value.is_error()) + return vm.throw_completion(JS::ErrorType::JsonMalformed); + + auto json_value = maybe_json_value.release_value(); + if (!json_value.is_object()) { + return vm.throw_completion("JSON value is not an object"_string); + } + + auto& json_object = json_value.as_object(); + + // 5. Let key be the result of converting result to the IDL dictionary type of JsonWebKey. + JsonWebKey key {}; + JWK_PARSE_STRING_PROPERTY(kty); + JWK_PARSE_STRING_PROPERTY(use); + JWK_PARSE_STRING_PROPERTY(alg); + JWK_PARSE_STRING_PROPERTY(crv); + JWK_PARSE_STRING_PROPERTY(x); + JWK_PARSE_STRING_PROPERTY(y); + JWK_PARSE_STRING_PROPERTY(d); + JWK_PARSE_STRING_PROPERTY(n); + JWK_PARSE_STRING_PROPERTY(e); + JWK_PARSE_STRING_PROPERTY(p); + JWK_PARSE_STRING_PROPERTY(q); + JWK_PARSE_STRING_PROPERTY(dp); + JWK_PARSE_STRING_PROPERTY(dq); + JWK_PARSE_STRING_PROPERTY(qi); + JWK_PARSE_STRING_PROPERTY(k); + + key.ext = json_object.get_bool("ext"sv); + + if (json_object.has_array("key_ops"sv)) { + auto key_ops = *json_object.get_array("key_ops"sv); + key.key_ops = Vector {}; + TRY_OR_THROW_OOM(vm, key.key_ops->try_ensure_capacity(key_ops.size())); + + TRY(key_ops.try_for_each([&key, &vm](auto value) -> JS::Completion { + key.key_ops->append(TRY_OR_THROW_OOM(vm, String::from_byte_string(value.as_string()))); + return {}; + })); + } + + if (json_object.has("oth"sv)) + TODO(); + + // 6. If the kty field of key is not defined, then throw a DataError. + if (!key.kty.has_value()) + return vm.throw_completion("kty field is not defined"_string); + + // 7. Return key. + return key; +} + +#undef JWK_PARSE_STRING_PROPERTY JS::ThrowCompletionOr> JsonWebKey::to_object(JS::Realm& realm) { diff --git a/Libraries/LibWeb/Crypto/CryptoBindings.h b/Libraries/LibWeb/Crypto/CryptoBindings.h index 89e98fdff5c..0cb69019c88 100644 --- a/Libraries/LibWeb/Crypto/CryptoBindings.h +++ b/Libraries/LibWeb/Crypto/CryptoBindings.h @@ -44,6 +44,8 @@ struct JsonWebKey { Optional k; JS::ThrowCompletionOr> to_object(JS::Realm&); + + static JS::ThrowCompletionOr parse(JS::Realm& realm, ReadonlyBytes data); }; }