mirror of
https://github.com/lexmount/moli.git
synced 2026-10-31 00:06:19 +00:00
ldm0
4b8dc0f320
Add borrowed AllowShared BufferSource conversion for algorithms that copy after dictionaries are converted, including native range writes and atomic shared-memory byte access. Reject resizable/growable storage and author proxies using native identity, including detached resizable buffers and views. Tests cover late snapshots, bounded writes, surrounding bytes, detachment and native resizable flags. Individual API migrations are separate.
103 lines
3.9 KiB
Rust
103 lines
3.9 KiB
Rust
use moli_webidl::{AllowSharedBufferSource, Context};
|
|
fn eval<'s>(scope: &mut v8::PinScope<'s, '_>, source: &str) -> v8::Local<'s, v8::Value> {
|
|
let source = v8::String::new(scope, source).unwrap();
|
|
v8::Script::compile(scope, source, None)
|
|
.unwrap()
|
|
.run(scope)
|
|
.unwrap()
|
|
}
|
|
#[test]
|
|
fn borrowed_buffer_sources_copy_late_and_write_only_the_native_range() {
|
|
moli_v8_test_util::ensure_v8();
|
|
let mut isolate = v8::Isolate::new(Default::default());
|
|
let scope = std::pin::pin!(v8::HandleScope::new(&mut isolate));
|
|
let scope = &mut scope.init();
|
|
let context = v8::Context::new(scope, Default::default());
|
|
let scope = &mut v8::ContextScope::new(scope, context);
|
|
for shared in [false, true] {
|
|
let value = eval(
|
|
scope,
|
|
if shared {
|
|
"globalThis.storage=new SharedArrayBuffer(6); new Uint8Array(storage).set([1,2,3,4,5,6]); new DataView(storage,1,3)"
|
|
} else {
|
|
"globalThis.storage=new ArrayBuffer(6); new Uint8Array(storage).set([1,2,3,4,5,6]); new DataView(storage,1,3)"
|
|
},
|
|
);
|
|
let source = moli_webidl::convert::<AllowSharedBufferSource>(
|
|
scope,
|
|
value,
|
|
Context::argument("Test.buffer", 1),
|
|
)
|
|
.unwrap();
|
|
assert_eq!(source.byte_length(), 3);
|
|
eval(scope, "new Uint8Array(storage)[2]=9");
|
|
assert_eq!(source.to_vec(scope), [2, 9, 4]);
|
|
assert!(!source.write_bytes(scope, &[7, 8, 9, 10]));
|
|
assert_eq!(source.to_vec(scope), [2, 9, 4]);
|
|
assert!(source.write_bytes(scope, &[7, 8]));
|
|
assert!(source.write_bytes(scope, &[]));
|
|
assert_eq!(
|
|
eval(scope, "Array.from(new Uint8Array(storage)).join(',')")
|
|
.to_rust_string_lossy(scope),
|
|
"1,7,8,4,5,6"
|
|
);
|
|
if !shared {
|
|
let buffer = v8::Local::<v8::ArrayBuffer>::try_from(eval(scope, "storage")).unwrap();
|
|
assert_eq!(buffer.detach(None), Some(true));
|
|
assert_eq!(source.byte_length(), 0);
|
|
assert!(source.to_vec(scope).is_empty());
|
|
assert!(!source.write_bytes(scope, &[1]));
|
|
}
|
|
}
|
|
}
|
|
#[test]
|
|
fn borrowed_buffer_sources_reject_forged_proxies_and_resizable_storage() {
|
|
moli_v8_test_util::ensure_v8();
|
|
let mut isolate = v8::Isolate::new(Default::default());
|
|
let scope = std::pin::pin!(v8::HandleScope::new(&mut isolate));
|
|
let scope = &mut scope.init();
|
|
let context = v8::Context::new(scope, Default::default());
|
|
let scope = &mut v8::ContextScope::new(scope, context);
|
|
for expression in [
|
|
"{}",
|
|
"Object.create(ArrayBuffer.prototype)",
|
|
"new Proxy(new Uint8Array(2),{})",
|
|
"new ArrayBuffer(2,{maxByteLength:4})",
|
|
"new Uint8Array(new ArrayBuffer(2,{maxByteLength:4}))",
|
|
"new SharedArrayBuffer(2,{maxByteLength:4})",
|
|
"new DataView(new SharedArrayBuffer(2,{maxByteLength:4}))",
|
|
] {
|
|
let value = eval(scope, expression);
|
|
assert!(
|
|
moli_webidl::convert::<AllowSharedBufferSource>(
|
|
scope,
|
|
value,
|
|
Context::argument("Test.buffer", 1)
|
|
)
|
|
.is_err(),
|
|
"{expression}"
|
|
);
|
|
}
|
|
for view in [false, true] {
|
|
let value = eval(
|
|
scope,
|
|
if view {
|
|
"globalThis.resizable=new ArrayBuffer(2,{maxByteLength:4}); new DataView(resizable)"
|
|
} else {
|
|
"globalThis.resizable=new ArrayBuffer(2,{maxByteLength:4}); resizable"
|
|
},
|
|
);
|
|
let buffer = v8::Local::<v8::ArrayBuffer>::try_from(eval(scope, "resizable")).unwrap();
|
|
buffer.detach(None).unwrap();
|
|
assert!(
|
|
moli_webidl::convert::<AllowSharedBufferSource>(
|
|
scope,
|
|
value,
|
|
Context::argument("Test.buffer", 1)
|
|
)
|
|
.is_err(),
|
|
"detached resizable view={view}"
|
|
);
|
|
}
|
|
}
|