mirror of
https://github.com/servo/servo
synced 2026-04-26 01:25:32 +02:00
623ce59383
Move interfaces defined by the Web Crypto specification to the `script/dom/webcrypto/` from `script/dom/`. This includes `Crypto`, `CryptoKey` and `SubtleCrypto` (with its submodules). Testing: No behavior changes. Fixes: Part of #38901 Signed-off-by: Kingsley Yung <kingsley@kkoyung.dev>
107 lines
3.5 KiB
Rust
107 lines
3.5 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use dom_struct::dom_struct;
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use js::jsapi::{Heap, JSObject, Type};
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use js::rust::CustomAutoRooterGuard;
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use js::typedarray::{ArrayBufferView, ArrayBufferViewU8, HeapArrayBufferView, TypedArray};
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use rand::TryRngCore;
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use rand::rngs::OsRng;
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use script_bindings::trace::RootedTraceableBox;
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use uuid::Uuid;
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use crate::dom::bindings::codegen::Bindings::CryptoBinding::CryptoMethods;
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use crate::dom::bindings::error::{Error, Fallible};
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use crate::dom::bindings::reflector::{DomGlobal, Reflector, reflect_dom_object};
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use crate::dom::bindings::root::{DomRoot, MutNullableDom};
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use crate::dom::bindings::str::DOMString;
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use crate::dom::globalscope::GlobalScope;
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use crate::dom::subtlecrypto::SubtleCrypto;
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use crate::script_runtime::{CanGc, JSContext};
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// https://developer.mozilla.org/en-US/docs/Web/API/Crypto
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#[dom_struct]
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pub(crate) struct Crypto {
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reflector_: Reflector,
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subtle: MutNullableDom<SubtleCrypto>,
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}
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impl Crypto {
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fn new_inherited() -> Crypto {
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Crypto {
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reflector_: Reflector::new(),
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subtle: MutNullableDom::default(),
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}
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}
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pub(crate) fn new(global: &GlobalScope, can_gc: CanGc) -> DomRoot<Crypto> {
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reflect_dom_object(Box::new(Crypto::new_inherited()), global, can_gc)
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}
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}
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impl CryptoMethods<crate::DomTypeHolder> for Crypto {
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/// <https://w3c.github.io/webcrypto/#dfn-Crypto-attribute-subtle>
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fn Subtle(&self, cx: &mut js::context::JSContext) -> DomRoot<SubtleCrypto> {
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self.subtle
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.or_init(|| SubtleCrypto::new(cx, &self.global()))
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}
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#[expect(unsafe_code)]
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/// <https://w3c.github.io/webcrypto/#Crypto-method-getRandomValues>
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fn GetRandomValues(
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&self,
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_cx: JSContext,
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mut input: CustomAutoRooterGuard<ArrayBufferView>,
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) -> Fallible<RootedTraceableBox<HeapArrayBufferView>> {
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let array_type = input.get_array_type();
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if !is_integer_buffer(array_type) {
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Err(Error::TypeMismatch(None))
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} else {
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let data = unsafe { input.as_mut_slice() };
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if data.len() > 65536 {
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return Err(Error::QuotaExceeded {
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quota: None,
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requested: None,
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});
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}
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if OsRng.try_fill_bytes(data).is_err() {
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return Err(Error::Operation(Some(
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"Failed to generate random values".into(),
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)));
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}
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let underlying_object = unsafe { input.underlying_object() };
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TypedArray::<ArrayBufferViewU8, Box<Heap<*mut JSObject>>>::from(*underlying_object)
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.map(RootedTraceableBox::new)
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.map_err(|_| Error::JSFailed)
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}
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}
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/// <https://w3c.github.io/webcrypto/#Crypto-method-randomUUID>
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fn RandomUUID(&self) -> DOMString {
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let uuid = Uuid::new_v4();
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uuid.hyphenated()
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.encode_lower(&mut Uuid::encode_buffer())
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.to_owned()
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.into()
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}
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}
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fn is_integer_buffer(array_type: Type) -> bool {
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matches!(
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array_type,
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Type::Uint8 |
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Type::Uint8Clamped |
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Type::Int8 |
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Type::Uint16 |
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Type::Int16 |
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Type::Uint32 |
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Type::Int32 |
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Type::BigInt64 |
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Type::BigUint64
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)
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}
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