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Remove some usage of unsafe code in XMLHttpRequest

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This commit is contained in:
marmeladema 2019-07-27 15:57:06 +01:00
parent 1d92796b03
commit 5ca3dd9d05
1 changed files with 21 additions and 21 deletions
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42
components/script/dom/xmlhttprequest.rs
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@ -38,7 +38,7 @@ use crate::dom::xmlhttprequesteventtarget::XMLHttpRequestEventTarget;
use crate::dom::xmlhttprequestupload::XMLHttpRequestUpload;
use crate::fetch::FetchCanceller;
use crate::network_listener::{self, NetworkListener, PreInvoke, ResourceTimingListener};
use crate::script_runtime::JSContext as SafeJSContext;
use crate::script_runtime::JSContext;
use crate::task_source::networking::NetworkingTaskSource;
use crate::task_source::TaskSourceName;
use crate::timers::{OneshotTimerCallback, OneshotTimerHandle};
@ -54,7 +54,7 @@ use hyper_serde::Serde;
use ipc_channel::ipc;
use ipc_channel::router::ROUTER;
use js::jsapi::JS_ClearPendingException;
use js::jsapi::{Heap, JSContext, JSObject};
use js::jsapi::{Heap, JSObject};
use js::jsval::{JSVal, NullValue, UndefinedValue};
use js::rust::wrappers::JS_ParseJSON;
use js::typedarray::{ArrayBuffer, CreateWith};
@ -878,7 +878,7 @@ impl XMLHttpRequestMethods for XMLHttpRequest {
#[allow(unsafe_code)]
// https://xhr.spec.whatwg.org/#the-response-attribute
fn Response(&self, cx: SafeJSContext) -> JSVal {
fn Response(&self, cx: JSContext) -> JSVal {
rooted!(in(*cx) let mut rval = UndefinedValue());
match self.response_type.get() {
XMLHttpRequestResponseType::_empty | XMLHttpRequestResponseType::Text => unsafe {
@ -902,16 +902,14 @@ impl XMLHttpRequestMethods for XMLHttpRequest {
self.document_response().to_jsval(*cx, rval.handle_mut());
},
XMLHttpRequestResponseType::Json => unsafe {
self.json_response(*cx).to_jsval(*cx, rval.handle_mut());
self.json_response(cx).to_jsval(*cx, rval.handle_mut());
},
XMLHttpRequestResponseType::Blob => unsafe {
self.blob_response().to_jsval(*cx, rval.handle_mut());
},
XMLHttpRequestResponseType::Arraybuffer => unsafe {
match self.arraybuffer_response(*cx) {
Some(js_object) => js_object.to_jsval(*cx, rval.handle_mut()),
None => return NullValue(),
}
XMLHttpRequestResponseType::Arraybuffer => match self.arraybuffer_response(cx) {
Some(js_object) => unsafe { js_object.to_jsval(*cx, rval.handle_mut()) },
None => return NullValue(),
},
}
rval.get()
@ -1278,7 +1276,7 @@ impl XMLHttpRequest {
// https://xhr.spec.whatwg.org/#arraybuffer-response
#[allow(unsafe_code)]
unsafe fn arraybuffer_response(&self, cx: *mut JSContext) -> Option<NonNull<JSObject>> {
fn arraybuffer_response(&self, cx: JSContext) -> Option<NonNull<JSObject>> {
// Step 1
let created = self.response_arraybuffer.get();
if let Some(nonnull) = NonNull::new(created) {
@ -1287,13 +1285,15 @@ impl XMLHttpRequest {
// Step 2
let bytes = self.response.borrow();
rooted!(in(cx) let mut array_buffer = ptr::null_mut::<JSObject>());
ArrayBuffer::create(cx, CreateWith::Slice(&bytes), array_buffer.handle_mut())
.ok()
.and_then(|()| {
self.response_arraybuffer.set(array_buffer.get());
Some(NonNull::new_unchecked(array_buffer.get()))
})
rooted!(in(*cx) let mut array_buffer = ptr::null_mut::<JSObject>());
unsafe {
ArrayBuffer::create(*cx, CreateWith::Slice(&bytes), array_buffer.handle_mut())
.ok()
.and_then(|()| {
self.response_arraybuffer.set(array_buffer.get());
Some(NonNull::new_unchecked(array_buffer.get()))
})
}
}
// https://xhr.spec.whatwg.org/#document-response
@ -1345,7 +1345,7 @@ impl XMLHttpRequest {
#[allow(unsafe_code)]
// https://xhr.spec.whatwg.org/#json-response
fn json_response(&self, cx: *mut JSContext) -> JSVal {
fn json_response(&self, cx: JSContext) -> JSVal {
// Step 1
let response_json = self.response_json.get();
if !response_json.is_null_or_undefined() {
@ -1378,15 +1378,15 @@ impl XMLHttpRequest {
// if present, but UTF-16BE/LE BOM must not be honored.
let json_text = decode_to_utf16_with_bom_removal(&bytes, UTF_8);
// Step 5
rooted!(in(cx) let mut rval = UndefinedValue());
rooted!(in(*cx) let mut rval = UndefinedValue());
unsafe {
if !JS_ParseJSON(
cx,
*cx,
json_text.as_ptr(),
json_text.len() as u32,
rval.handle_mut(),
) {
JS_ClearPendingException(cx);
JS_ClearPendingException(*cx);
return NullValue();
}
}