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Harden stream pipe cancellation

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Basilisk-Dev 2026-05-08 15:07:37 -04:00 • committed by wuggy
commit 936a862591
1 changed files with 17 additions and 0 deletions
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17
js/src/builtin/Stream.cpp
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@ -6032,6 +6032,8 @@ js::InitStreamExtras(JSContext* cx, HandleObject global)
var write = state.sink.write;
var controller = state.controller;
var writePromise = state.writeChain.then(function() {
if (state.state === "errored")
throw state.storedError;
if (write)
return write.call(state.sink, chunk, controller);
return undefined;
@ -6103,6 +6105,8 @@ js::InitStreamExtras(JSContext* cx, HandleObject global)
state.closed.reject(reason);
state.readyPromise.catch(function() {});
state.closedPromise.catch(function() {});
if (state.writer)
syncWritableWriterWithStream(state.writer, state);
var abortPromise = abort ? promiseCall(abort, state.sink, [reason])
: Promise.resolve(undefined);
@ -6542,7 +6546,11 @@ js::InitStreamExtras(JSContext* cx, HandleObject global)
signal.addEventListener("abort", onAbort);
function pump() {
if (closed)
return;
reader.read().then(function(result) {
if (closed)
return;
if (result.done) {
var closePromise = preventClose ? Promise.resolve(undefined)
: writer.close();
@ -6557,6 +6565,8 @@ js::InitStreamExtras(JSContext* cx, HandleObject global)
}
writer.write(result.value).then(pump, function(error) {
if (closed)
return;
var cancel = preventCancel
? Promise.resolve(undefined)
: reader.cancel(error);
@ -6569,6 +6579,8 @@ js::InitStreamExtras(JSContext* cx, HandleObject global)
});
});
}, function(error) {
if (closed)
return;
var abort = preventAbort
? Promise.resolve(undefined)
: writer.abort(error);
@ -6596,6 +6608,8 @@ js::InitStreamExtras(JSContext* cx, HandleObject global)
throw new TypeError("ReadableStream is locked");
if (!isWritableStream(writable))
throw new TypeError("transform.writable must be a WritableStream");
if (!(output instanceof global.ReadableStream))
throw new TypeError("transform.readable must be a ReadableStream");
if (writable.locked)
throw new TypeError("WritableStream is locked");
readable.pipeTo(writable, options).catch(function() {});
@ -6679,6 +6693,9 @@ js::InitStreamExtras(JSContext* cx, HandleObject global)
return reader.cancel(value).then(function() {
reader.releaseLock();
return { value: value, done: true };
}, function(error) {
try { reader.releaseLock(); } catch (e) {}
throw error;
});
};