forked from mirrors/gecko-dev
c1d621cbd6
Source-Repo: https://github.com/servo/servo Source-Revision: 9370a0c4b500a1ad9dc29c0ad8a37d47f00d0817 --HG-- extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear extra : subtree_revision : 00fd18a810160cde902a0f1c5d72d5dc845c2cf6
83 lines
2.6 KiB
Rust
83 lines
2.6 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
use core::nonzero::NonZero;
|
|
use dom::bindings::cell::DOMRefCell;
|
|
use dom::bindings::codegen::Bindings::CryptoBinding;
|
|
use dom::bindings::codegen::Bindings::CryptoBinding::CryptoMethods;
|
|
use dom::bindings::error::{Error, Fallible};
|
|
use dom::bindings::js::Root;
|
|
use dom::bindings::reflector::{Reflector, reflect_dom_object};
|
|
use dom::globalscope::GlobalScope;
|
|
use dom_struct::dom_struct;
|
|
use js::jsapi::{JSContext, JSObject};
|
|
use js::jsapi::Type;
|
|
use servo_rand::{ServoRng, Rng};
|
|
|
|
unsafe_no_jsmanaged_fields!(ServoRng);
|
|
|
|
// https://developer.mozilla.org/en-US/docs/Web/API/Crypto
|
|
#[dom_struct]
|
|
pub struct Crypto {
|
|
reflector_: Reflector,
|
|
#[ignore_heap_size_of = "Defined in rand"]
|
|
rng: DOMRefCell<ServoRng>,
|
|
}
|
|
|
|
impl Crypto {
|
|
fn new_inherited() -> Crypto {
|
|
Crypto {
|
|
reflector_: Reflector::new(),
|
|
rng: DOMRefCell::new(ServoRng::new()),
|
|
}
|
|
}
|
|
|
|
pub fn new(global: &GlobalScope) -> Root<Crypto> {
|
|
reflect_dom_object(box Crypto::new_inherited(), global, CryptoBinding::Wrap)
|
|
}
|
|
}
|
|
|
|
impl CryptoMethods for Crypto {
|
|
#[allow(unsafe_code)]
|
|
// https://dvcs.w3.org/hg/webcrypto-api/raw-file/tip/spec/Overview.html#Crypto-method-getRandomValues
|
|
unsafe fn GetRandomValues(&self,
|
|
_cx: *mut JSContext,
|
|
input: *mut JSObject)
|
|
-> Fallible<NonZero<*mut JSObject>> {
|
|
assert!(!input.is_null());
|
|
typedarray!(in(_cx) let mut array_buffer_view: ArrayBufferView = input);
|
|
let (array_type, mut data) = match array_buffer_view.as_mut() {
|
|
Ok(x) => (x.get_array_type(), x.as_mut_slice()),
|
|
Err(_) => {
|
|
return Err(Error::Type("Argument to Crypto.getRandomValues is not an ArrayBufferView"
|
|
.to_owned()));
|
|
}
|
|
};
|
|
|
|
if !is_integer_buffer(array_type) {
|
|
return Err(Error::TypeMismatch);
|
|
}
|
|
|
|
if data.len() > 65536 {
|
|
return Err(Error::QuotaExceeded);
|
|
}
|
|
|
|
self.rng.borrow_mut().fill_bytes(&mut data);
|
|
|
|
Ok(NonZero::new_unchecked(input))
|
|
}
|
|
}
|
|
|
|
fn is_integer_buffer(array_type: Type) -> bool {
|
|
match array_type {
|
|
Type::Uint8 |
|
|
Type::Uint8Clamped |
|
|
Type::Int8 |
|
|
Type::Uint16 |
|
|
Type::Int16 |
|
|
Type::Uint32 |
|
|
Type::Int32 => true,
|
|
_ => false,
|
|
}
|
|
}
|