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More miscellaneous script splitting changes (#36220)
* script: Move HasParent to script_bindings and update imports for InheritTypes. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Make principal creation generic over DOM interface. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Move a bunch of proxy-related code to script_bindings. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Make some proxy-related code generic over the DOM interface. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Move DomSlice to script_bindings. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Move some utility bindings code to script_bindings. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Make enumerating and resolving globals generic over the DOM interface. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Make realm helpers generic over the DOM interface. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Move implementations on concrete DOM types to concrete bindings. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Make additional codegen helpers generic over the DOM interface. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Make iterator creation generic over the DOM interface. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Make reporting an exception a generic operation. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Move AsCCharPtrPtr to script_bindings. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * Formatting. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * Address clippy warnings. Signed-off-by: Josh Matthews <josh@joshmatthews.net> --------- Signed-off-by: Josh Matthews <josh@joshmatthews.net>
This commit is contained in:
Josh Matthews
GitHub
parent
971490084e
commit
b445053a7c
33 changed files with 806 additions and 628 deletions
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@ -6,199 +6,31 @@
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#![deny(missing_docs)]
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use std::ffi::CStr;
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use std::os::raw::c_char;
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use std::ptr;
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use js::conversions::ToJSValConvertible;
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use js::glue::{
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GetProxyHandler, GetProxyHandlerFamily, GetProxyPrivate, InvokeGetOwnPropertyDescriptor,
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SetProxyPrivate,
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};
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use js::glue::{GetProxyHandler, InvokeGetOwnPropertyDescriptor};
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use js::jsapi;
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use js::jsapi::{
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DOMProxyShadowsResult, GetObjectRealmOrNull, GetRealmPrincipals, GetStaticPrototype,
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GetWellKnownSymbol, Handle as RawHandle, HandleId as RawHandleId,
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HandleObject as RawHandleObject, HandleValue as RawHandleValue, JS_AtomizeAndPinString,
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JS_DefinePropertyById, JS_GetOwnPropertyDescriptorById, JS_IsExceptionPending, JSAutoRealm,
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JSContext, JSErrNum, JSFunctionSpec, JSObject, JSPropertySpec,
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MutableHandle as RawMutableHandle, MutableHandleIdVector as RawMutableHandleIdVector,
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GetObjectRealmOrNull, GetRealmPrincipals, HandleId as RawHandleId,
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HandleObject as RawHandleObject, HandleValue as RawHandleValue, JS_IsExceptionPending,
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JSAutoRealm, JSContext, JSObject, MutableHandle as RawMutableHandle,
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MutableHandleObject as RawMutableHandleObject, MutableHandleValue as RawMutableHandleValue,
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ObjectOpResult, PropertyDescriptor, SetDOMProxyInformation, SymbolCode, jsid,
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};
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use js::jsid::SymbolId;
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use js::jsval::{ObjectValue, UndefinedValue};
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use js::rust::wrappers::{
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AppendToIdVector, JS_AlreadyHasOwnPropertyById, JS_NewObjectWithGivenProto,
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RUST_INTERNED_STRING_TO_JSID, SetDataPropertyDescriptor,
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};
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use js::rust::{
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Handle, HandleObject, HandleValue, MutableHandle, MutableHandleObject, get_context_realm,
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ObjectOpResult, PropertyDescriptor,
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};
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use js::jsval::UndefinedValue;
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use js::rust::{HandleObject, HandleValue, MutableHandle, MutableHandleObject, get_context_realm};
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pub(crate) use script_bindings::proxyhandler::*;
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use crate::dom::bindings::conversions::{is_dom_proxy, jsid_to_string, jsstring_to_str};
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use crate::dom::bindings::error::{Error, throw_dom_exception};
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use crate::DomTypes;
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use crate::dom::bindings::error::Error;
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use crate::dom::bindings::principals::ServoJSPrincipalsRef;
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use crate::dom::bindings::reflector::DomObject;
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use crate::dom::bindings::str::DOMString;
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use crate::dom::bindings::utils::delete_property_by_id;
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use crate::dom::globalscope::{GlobalScope, GlobalScopeHelpers};
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use crate::dom::bindings::utils::DomHelpers;
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use crate::dom::globalscope::GlobalScopeHelpers;
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use crate::realms::{AlreadyInRealm, InRealm};
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use crate::script_runtime::{CanGc, JSContext as SafeJSContext};
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/// Determine if this id shadows any existing properties for this proxy.
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pub(crate) unsafe extern "C" fn shadow_check_callback(
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cx: *mut JSContext,
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object: RawHandleObject,
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id: RawHandleId,
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) -> DOMProxyShadowsResult {
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// TODO: support OverrideBuiltins when #12978 is fixed.
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rooted!(in(cx) let mut expando = ptr::null_mut::<JSObject>());
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get_expando_object(object, expando.handle_mut());
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if !expando.get().is_null() {
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let mut has_own = false;
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let raw_id = Handle::from_raw(id);
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if !JS_AlreadyHasOwnPropertyById(cx, expando.handle(), raw_id, &mut has_own) {
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return DOMProxyShadowsResult::ShadowCheckFailed;
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}
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if has_own {
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return DOMProxyShadowsResult::ShadowsViaDirectExpando;
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}
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}
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// Our expando, if any, didn't shadow, so we're not shadowing at all.
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DOMProxyShadowsResult::DoesntShadow
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}
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/// Initialize the infrastructure for DOM proxy objects.
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pub(crate) unsafe fn init() {
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SetDOMProxyInformation(
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GetProxyHandlerFamily(),
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Some(shadow_check_callback),
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ptr::null(),
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);
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}
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/// Defines an expando on the given `proxy`.
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pub(crate) unsafe extern "C" fn define_property(
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cx: *mut JSContext,
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proxy: RawHandleObject,
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id: RawHandleId,
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desc: RawHandle<PropertyDescriptor>,
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result: *mut ObjectOpResult,
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) -> bool {
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rooted!(in(cx) let mut expando = ptr::null_mut::<JSObject>());
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ensure_expando_object(cx, proxy, expando.handle_mut());
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JS_DefinePropertyById(cx, expando.handle().into(), id, desc, result)
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}
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/// Deletes an expando off the given `proxy`.
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pub(crate) unsafe extern "C" fn delete(
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cx: *mut JSContext,
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proxy: RawHandleObject,
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id: RawHandleId,
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bp: *mut ObjectOpResult,
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) -> bool {
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rooted!(in(cx) let mut expando = ptr::null_mut::<JSObject>());
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get_expando_object(proxy, expando.handle_mut());
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if expando.is_null() {
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(*bp).code_ = 0 /* OkCode */;
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return true;
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}
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delete_property_by_id(cx, expando.handle(), Handle::from_raw(id), bp)
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}
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/// Controls whether the Extensible bit can be changed
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pub(crate) unsafe extern "C" fn prevent_extensions(
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_cx: *mut JSContext,
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_proxy: RawHandleObject,
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result: *mut ObjectOpResult,
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) -> bool {
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(*result).code_ = JSErrNum::JSMSG_CANT_PREVENT_EXTENSIONS as ::libc::uintptr_t;
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true
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}
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/// Reports whether the object is Extensible
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pub(crate) unsafe extern "C" fn is_extensible(
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_cx: *mut JSContext,
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_proxy: RawHandleObject,
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succeeded: *mut bool,
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) -> bool {
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*succeeded = true;
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true
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}
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/// If `proxy` (underneath any functionally-transparent wrapper proxies) has as
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/// its `[[GetPrototypeOf]]` trap the ordinary `[[GetPrototypeOf]]` behavior
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/// defined for ordinary objects, set `*is_ordinary` to true and store `obj`'s
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/// prototype in `proto`. Otherwise set `*isOrdinary` to false. In case of
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/// error, both outparams have unspecified value.
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///
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/// This implementation always handles the case of the ordinary
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/// `[[GetPrototypeOf]]` behavior. An alternative implementation will be
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/// necessary for maybe-cross-origin objects.
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pub(crate) unsafe extern "C" fn get_prototype_if_ordinary(
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_: *mut JSContext,
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proxy: RawHandleObject,
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is_ordinary: *mut bool,
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proto: RawMutableHandleObject,
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) -> bool {
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*is_ordinary = true;
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proto.set(GetStaticPrototype(proxy.get()));
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true
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}
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/// Get the expando object, or null if there is none.
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pub(crate) unsafe fn get_expando_object(obj: RawHandleObject, mut expando: MutableHandleObject) {
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assert!(is_dom_proxy(obj.get()));
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let val = &mut UndefinedValue();
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GetProxyPrivate(obj.get(), val);
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expando.set(if val.is_undefined() {
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ptr::null_mut()
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} else {
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val.to_object()
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});
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}
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/// Get the expando object, or create it if it doesn't exist yet.
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/// Fails on JSAPI failure.
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pub(crate) unsafe fn ensure_expando_object(
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cx: *mut JSContext,
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obj: RawHandleObject,
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mut expando: MutableHandleObject,
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) {
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assert!(is_dom_proxy(obj.get()));
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get_expando_object(obj, expando.reborrow());
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if expando.is_null() {
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expando.set(JS_NewObjectWithGivenProto(
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cx,
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ptr::null_mut(),
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HandleObject::null(),
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));
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assert!(!expando.is_null());
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SetProxyPrivate(obj.get(), &ObjectValue(expando.get()));
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}
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}
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/// Set the property descriptor's object to `obj` and set it to enumerable,
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/// and writable if `readonly` is true.
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pub(crate) fn set_property_descriptor(
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desc: MutableHandle<PropertyDescriptor>,
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value: HandleValue,
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attrs: u32,
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is_none: &mut bool,
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) {
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unsafe {
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SetDataPropertyDescriptor(desc, value, attrs);
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}
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*is_none = false;
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}
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/// <https://html.spec.whatwg.org/multipage/#isplatformobjectsameorigin-(-o-)>
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pub(crate) unsafe fn is_platform_object_same_origin(
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cx: SafeJSContext,
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@ -239,7 +71,7 @@ pub(crate) unsafe fn is_platform_object_same_origin(
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/// What this function does corresponds to the operations in
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/// <https://html.spec.whatwg.org/multipage/#the-location-interface> denoted as
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/// "Throw a `SecurityError` DOMException".
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pub(crate) unsafe fn report_cross_origin_denial(
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pub(crate) unsafe fn report_cross_origin_denial<D: DomTypes>(
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cx: SafeJSContext,
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id: RawHandleId,
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access: &str,
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@ -251,75 +83,17 @@ pub(crate) unsafe fn report_cross_origin_denial(
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);
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let in_realm_proof = AlreadyInRealm::assert_for_cx(cx);
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if !JS_IsExceptionPending(*cx) {
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let global = GlobalScope::from_context(*cx, InRealm::Already(&in_realm_proof));
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let global = D::GlobalScope::from_context(*cx, InRealm::Already(&in_realm_proof));
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// TODO: include `id` and `access` in the exception message
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throw_dom_exception(cx, &global, Error::Security, CanGc::note());
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<D as DomHelpers<D>>::throw_dom_exception(cx, &global, Error::Security, CanGc::note());
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}
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false
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}
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unsafe fn id_to_source(cx: SafeJSContext, id: RawHandleId) -> Option<DOMString> {
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rooted!(in(*cx) let mut value = UndefinedValue());
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rooted!(in(*cx) let mut jsstr = ptr::null_mut::<jsapi::JSString>());
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jsapi::JS_IdToValue(*cx, id.get(), value.handle_mut().into())
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.then(|| {
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jsstr.set(jsapi::JS_ValueToSource(*cx, value.handle().into()));
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jsstr.get()
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})
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.and_then(ptr::NonNull::new)
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.map(|jsstr| jsstring_to_str(*cx, jsstr))
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}
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/// Property and method specs that correspond to the elements of
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/// [`CrossOriginProperties(O)`].
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///
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/// [`CrossOriginProperties(O)`]: https://html.spec.whatwg.org/multipage/#crossoriginproperties-(-o-)
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pub(crate) struct CrossOriginProperties {
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pub(crate) attributes: &'static [JSPropertySpec],
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pub(crate) methods: &'static [JSFunctionSpec],
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}
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impl CrossOriginProperties {
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/// Enumerate the property keys defined by `self`.
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fn keys(&self) -> impl Iterator<Item = *const c_char> + '_ {
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// Safety: All cross-origin property keys are strings, not symbols
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self.attributes
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.iter()
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.map(|spec| unsafe { spec.name.string_ })
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.chain(self.methods.iter().map(|spec| unsafe { spec.name.string_ }))
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.filter(|ptr| !ptr.is_null())
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}
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}
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/// Implementation of [`CrossOriginOwnPropertyKeys`].
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///
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/// [`CrossOriginOwnPropertyKeys`]: https://html.spec.whatwg.org/multipage/#crossoriginownpropertykeys-(-o-)
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pub(crate) unsafe fn cross_origin_own_property_keys(
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cx: SafeJSContext,
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_proxy: RawHandleObject,
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cross_origin_properties: &'static CrossOriginProperties,
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props: RawMutableHandleIdVector,
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) -> bool {
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// > 2. For each `e` of `! CrossOriginProperties(O)`, append
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// > `e.[[Property]]` to `keys`.
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for key in cross_origin_properties.keys() {
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rooted!(in(*cx) let rooted = JS_AtomizeAndPinString(*cx, key));
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rooted!(in(*cx) let mut rooted_jsid: jsid);
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RUST_INTERNED_STRING_TO_JSID(*cx, rooted.handle().get(), rooted_jsid.handle_mut());
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AppendToIdVector(props, rooted_jsid.handle());
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}
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// > 3. Return the concatenation of `keys` and `« "then", @@toStringTag,
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// > @@hasInstance, @@isConcatSpreadable »`.
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append_cross_origin_allowlisted_prop_keys(cx, props);
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true
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}
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/// Implementation of `[[Set]]` for [`Location`].
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///
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/// [`Location`]: https://html.spec.whatwg.org/multipage/#location-set
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pub(crate) unsafe extern "C" fn maybe_cross_origin_set_rawcx(
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pub(crate) unsafe extern "C" fn maybe_cross_origin_set_rawcx<D: DomTypes>(
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cx: *mut JSContext,
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proxy: RawHandleObject,
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id: RawHandleId,
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@ -329,8 +103,8 @@ pub(crate) unsafe extern "C" fn maybe_cross_origin_set_rawcx(
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) -> bool {
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let cx = SafeJSContext::from_ptr(cx);
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if !is_platform_object_same_origin(cx, proxy) {
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return cross_origin_set(cx, proxy, id, v, receiver, result);
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if !<D as DomHelpers<D>>::is_platform_object_same_origin(cx, proxy) {
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return cross_origin_set::<D>(cx, proxy, id, v, receiver, result);
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}
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// Safe to enter the Realm of proxy now.
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@ -362,21 +136,10 @@ pub(crate) unsafe extern "C" fn maybe_cross_origin_set_rawcx(
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)
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}
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pub(crate) unsafe extern "C" fn maybe_cross_origin_get_prototype_if_ordinary_rawcx(
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_: *mut JSContext,
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_proxy: RawHandleObject,
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is_ordinary: *mut bool,
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_proto: RawMutableHandleObject,
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) -> bool {
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// We have a custom `[[GetPrototypeOf]]`, so return `false`
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*is_ordinary = false;
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true
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}
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/// Implementation of `[[GetPrototypeOf]]` for [`Location`].
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///
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/// [`Location`]: https://html.spec.whatwg.org/multipage/#location-getprototypeof
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pub(crate) unsafe fn maybe_cross_origin_get_prototype<D: crate::DomTypes>(
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pub(crate) unsafe fn maybe_cross_origin_get_prototype<D: DomTypes>(
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cx: SafeJSContext,
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proxy: RawHandleObject,
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get_proto_object: unsafe fn(cx: SafeJSContext, global: HandleObject, rval: MutableHandleObject),
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|
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@ -399,46 +162,13 @@ pub(crate) unsafe fn maybe_cross_origin_get_prototype<D: crate::DomTypes>(
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true
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}
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/// Implementation of `[[SetPrototypeOf]]` for [`Location`] and [`WindowProxy`].
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///
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/// [`Location`]: https://html.spec.whatwg.org/multipage/#location-setprototypeof
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/// [`WindowProxy`]: https://html.spec.whatwg.org/multipage/#windowproxy-setprototypeof
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pub(crate) unsafe extern "C" fn maybe_cross_origin_set_prototype_rawcx(
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cx: *mut JSContext,
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proxy: RawHandleObject,
|
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proto: RawHandleObject,
|
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result: *mut ObjectOpResult,
|
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) -> bool {
|
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// > 1. Return `! SetImmutablePrototype(this, V)`.
|
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//
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// <https://tc39.es/ecma262/#sec-set-immutable-prototype>:
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//
|
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// > 1. Assert: Either `Type(V)` is Object or `Type(V)` is Null.
|
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//
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// > 2. Let current be `? O.[[GetPrototypeOf]]()`.
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rooted!(in(cx) let mut current = ptr::null_mut::<JSObject>());
|
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if !jsapi::GetObjectProto(cx, proxy, current.handle_mut().into()) {
|
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return false;
|
||||
}
|
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|
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// > 3. If `SameValue(V, current)` is true, return true.
|
||||
if proto.get() == current.get() {
|
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(*result).code_ = 0 /* OkCode */;
|
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return true;
|
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}
|
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|
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// > 4. Return false.
|
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(*result).code_ = JSErrNum::JSMSG_CANT_SET_PROTO as usize;
|
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true
|
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}
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|
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/// Implementation of [`CrossOriginGet`].
|
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///
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/// `cx` and `proxy` are expected to be different-Realm here. `proxy` is a proxy
|
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/// for a maybe-cross-origin object.
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///
|
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/// [`CrossOriginGet`]: https://html.spec.whatwg.org/multipage/#crossoriginget-(-o,-p,-receiver-)
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pub(crate) unsafe fn cross_origin_get(
|
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pub(crate) unsafe fn cross_origin_get<D: DomTypes>(
|
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cx: SafeJSContext,
|
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proxy: RawHandleObject,
|
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receiver: RawHandleValue,
|
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|
|
@ -482,7 +212,7 @@ pub(crate) unsafe fn cross_origin_get(
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rooted!(in(*cx) let mut getter = ptr::null_mut::<JSObject>());
|
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get_getter_object(&descriptor, getter.handle_mut().into());
|
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if getter.get().is_null() {
|
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return report_cross_origin_denial(cx, id, "get");
|
||||
return report_cross_origin_denial::<D>(cx, id, "get");
|
||||
}
|
||||
|
||||
rooted!(in(*cx) let mut getter_jsval = UndefinedValue());
|
||||
|
|
@ -504,7 +234,7 @@ pub(crate) unsafe fn cross_origin_get(
|
|||
/// for a maybe-cross-origin object.
|
||||
///
|
||||
/// [`CrossOriginSet`]: https://html.spec.whatwg.org/multipage/#crossoriginset-(-o,-p,-v,-receiver-)
|
||||
pub(crate) unsafe fn cross_origin_set(
|
||||
pub(crate) unsafe fn cross_origin_set<D: DomTypes>(
|
||||
cx: SafeJSContext,
|
||||
proxy: RawHandleObject,
|
||||
id: RawHandleId,
|
||||
|
|
@ -539,7 +269,7 @@ pub(crate) unsafe fn cross_origin_set(
|
|||
get_setter_object(&descriptor, setter.handle_mut().into());
|
||||
if setter.get().is_null() {
|
||||
// > 4. Throw a "SecurityError" DOMException.
|
||||
return report_cross_origin_denial(cx, id, "set");
|
||||
return report_cross_origin_denial::<D>(cx, id, "set");
|
||||
}
|
||||
|
||||
rooted!(in(*cx) let mut setter_jsval = UndefinedValue());
|
||||
|
|
@ -568,86 +298,13 @@ pub(crate) unsafe fn cross_origin_set(
|
|||
true
|
||||
}
|
||||
|
||||
unsafe fn get_getter_object(d: &PropertyDescriptor, out: RawMutableHandleObject) {
|
||||
if d.hasGetter_() {
|
||||
out.set(d.getter_);
|
||||
}
|
||||
}
|
||||
|
||||
unsafe fn get_setter_object(d: &PropertyDescriptor, out: RawMutableHandleObject) {
|
||||
if d.hasSetter_() {
|
||||
out.set(d.setter_);
|
||||
}
|
||||
}
|
||||
|
||||
/// <https://tc39.es/ecma262/#sec-isaccessordescriptor>
|
||||
fn is_accessor_descriptor(d: &PropertyDescriptor) -> bool {
|
||||
d.hasSetter_() || d.hasGetter_()
|
||||
}
|
||||
|
||||
/// <https://tc39.es/ecma262/#sec-isdatadescriptor>
|
||||
fn is_data_descriptor(d: &PropertyDescriptor) -> bool {
|
||||
d.hasWritable_() || d.hasValue_()
|
||||
}
|
||||
|
||||
/// Evaluate `CrossOriginGetOwnPropertyHelper(proxy, id) != null`.
|
||||
/// SpiderMonkey-specific.
|
||||
///
|
||||
/// `cx` and `proxy` are expected to be different-Realm here. `proxy` is a proxy
|
||||
/// for a maybe-cross-origin object.
|
||||
pub(crate) unsafe fn cross_origin_has_own(
|
||||
cx: SafeJSContext,
|
||||
_proxy: RawHandleObject,
|
||||
cross_origin_properties: &'static CrossOriginProperties,
|
||||
id: RawHandleId,
|
||||
bp: *mut bool,
|
||||
) -> bool {
|
||||
// TODO: Once we have the slot for the holder, it'd be more efficient to
|
||||
// use `ensure_cross_origin_property_holder`. We'll need `_proxy` to
|
||||
// do that.
|
||||
*bp = jsid_to_string(*cx, Handle::from_raw(id)).is_some_and(|key| {
|
||||
cross_origin_properties.keys().any(|defined_key| {
|
||||
let defined_key = CStr::from_ptr(defined_key);
|
||||
defined_key.to_bytes() == key.as_bytes()
|
||||
})
|
||||
});
|
||||
|
||||
true
|
||||
}
|
||||
|
||||
/// Implementation of [`CrossOriginGetOwnPropertyHelper`].
|
||||
///
|
||||
/// `cx` and `proxy` are expected to be different-Realm here. `proxy` is a proxy
|
||||
/// for a maybe-cross-origin object.
|
||||
///
|
||||
/// [`CrossOriginGetOwnPropertyHelper`]: https://html.spec.whatwg.org/multipage/#crossorigingetownpropertyhelper-(-o,-p-)
|
||||
pub(crate) unsafe fn cross_origin_get_own_property_helper(
|
||||
cx: SafeJSContext,
|
||||
proxy: RawHandleObject,
|
||||
cross_origin_properties: &'static CrossOriginProperties,
|
||||
id: RawHandleId,
|
||||
desc: RawMutableHandle<PropertyDescriptor>,
|
||||
is_none: &mut bool,
|
||||
) -> bool {
|
||||
rooted!(in(*cx) let mut holder = ptr::null_mut::<JSObject>());
|
||||
|
||||
ensure_cross_origin_property_holder(
|
||||
cx,
|
||||
proxy,
|
||||
cross_origin_properties,
|
||||
holder.handle_mut().into(),
|
||||
);
|
||||
|
||||
JS_GetOwnPropertyDescriptorById(*cx, holder.handle().into(), id, desc, is_none)
|
||||
}
|
||||
|
||||
/// Implementation of [`CrossOriginPropertyFallback`].
|
||||
///
|
||||
/// `cx` and `proxy` are expected to be different-Realm here. `proxy` is a proxy
|
||||
/// for a maybe-cross-origin object.
|
||||
///
|
||||
/// [`CrossOriginPropertyFallback`]: https://html.spec.whatwg.org/multipage/#crossoriginpropertyfallback-(-p-)
|
||||
pub(crate) unsafe fn cross_origin_property_fallback(
|
||||
pub(crate) unsafe fn cross_origin_property_fallback<D: DomTypes>(
|
||||
cx: SafeJSContext,
|
||||
_proxy: RawHandleObject,
|
||||
id: RawHandleId,
|
||||
|
|
@ -671,96 +328,5 @@ pub(crate) unsafe fn cross_origin_property_fallback(
|
|||
}
|
||||
|
||||
// > 2. Throw a `SecurityError` `DOMException`.
|
||||
report_cross_origin_denial(cx, id, "access")
|
||||
}
|
||||
|
||||
const ALLOWLISTED_SYMBOL_CODES: &[SymbolCode] = &[
|
||||
SymbolCode::toStringTag,
|
||||
SymbolCode::hasInstance,
|
||||
SymbolCode::isConcatSpreadable,
|
||||
];
|
||||
|
||||
unsafe fn is_cross_origin_allowlisted_prop(cx: SafeJSContext, id: RawHandleId) -> bool {
|
||||
if jsid_to_string(*cx, Handle::from_raw(id)).is_some_and(|st| st == "then") {
|
||||
return true;
|
||||
}
|
||||
|
||||
rooted!(in(*cx) let mut allowed_id: jsid);
|
||||
ALLOWLISTED_SYMBOL_CODES.iter().any(|&allowed_code| {
|
||||
allowed_id.set(SymbolId(GetWellKnownSymbol(*cx, allowed_code)));
|
||||
// `jsid`s containing `JS::Symbol *` can be compared by
|
||||
// referential equality
|
||||
allowed_id.get().asBits_ == id.asBits_
|
||||
})
|
||||
}
|
||||
|
||||
/// Append `« "then", @@toStringTag, @@hasInstance, @@isConcatSpreadable »` to
|
||||
/// `props`. This is used to implement [`CrossOriginOwnPropertyKeys`].
|
||||
///
|
||||
/// [`CrossOriginOwnPropertyKeys`]: https://html.spec.whatwg.org/multipage/#crossoriginownpropertykeys-(-o-)
|
||||
unsafe fn append_cross_origin_allowlisted_prop_keys(
|
||||
cx: SafeJSContext,
|
||||
props: RawMutableHandleIdVector,
|
||||
) {
|
||||
rooted!(in(*cx) let mut id: jsid);
|
||||
|
||||
let jsstring = JS_AtomizeAndPinString(*cx, c"then".as_ptr());
|
||||
rooted!(in(*cx) let rooted = jsstring);
|
||||
RUST_INTERNED_STRING_TO_JSID(*cx, rooted.handle().get(), id.handle_mut());
|
||||
AppendToIdVector(props, id.handle());
|
||||
|
||||
for &allowed_code in ALLOWLISTED_SYMBOL_CODES.iter() {
|
||||
id.set(SymbolId(GetWellKnownSymbol(*cx, allowed_code)));
|
||||
AppendToIdVector(props, id.handle());
|
||||
}
|
||||
}
|
||||
|
||||
/// Get the holder for cross-origin properties for the current global of the
|
||||
/// `JSContext`, creating one and storing it in a slot of the proxy object if it
|
||||
/// doesn't exist yet.
|
||||
///
|
||||
/// This essentially creates a cache of [`CrossOriginGetOwnPropertyHelper`]'s
|
||||
/// results for all property keys.
|
||||
///
|
||||
/// `cx` and `proxy` are expected to be different-Realm here. `proxy` is a proxy
|
||||
/// for a maybe-cross-origin object. The `out_holder` return value will always
|
||||
/// be in the Realm of `cx`.
|
||||
///
|
||||
/// [`CrossOriginGetOwnPropertyHelper`]: https://html.spec.whatwg.org/multipage/#crossorigingetownpropertyhelper-(-o,-p-)
|
||||
unsafe fn ensure_cross_origin_property_holder(
|
||||
cx: SafeJSContext,
|
||||
_proxy: RawHandleObject,
|
||||
cross_origin_properties: &'static CrossOriginProperties,
|
||||
out_holder: RawMutableHandleObject,
|
||||
) -> bool {
|
||||
// TODO: We don't have the slot to store the holder yet. For now,
|
||||
// the holder is constructed every time this function is called,
|
||||
// which is not only inefficient but also deviates from the
|
||||
// specification in a subtle yet observable way.
|
||||
|
||||
// Create a holder for the current Realm
|
||||
out_holder.set(jsapi::JS_NewObjectWithGivenProto(
|
||||
*cx,
|
||||
ptr::null_mut(),
|
||||
RawHandleObject::null(),
|
||||
));
|
||||
|
||||
if out_holder.get().is_null() ||
|
||||
!jsapi::JS_DefineProperties(
|
||||
*cx,
|
||||
out_holder.handle(),
|
||||
cross_origin_properties.attributes.as_ptr(),
|
||||
) ||
|
||||
!jsapi::JS_DefineFunctions(
|
||||
*cx,
|
||||
out_holder.handle(),
|
||||
cross_origin_properties.methods.as_ptr(),
|
||||
)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
// TODO: Store the holder in the slot that we don't have yet.
|
||||
|
||||
true
|
||||
report_cross_origin_denial::<D>(cx, id, "access")
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue