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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/xpconnect/src/XPCWrapper.cpp | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/xpconnect/src/XPCWrapper.cpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/js/xpconnect/src/XPCWrapper.cpp b/js/xpconnect/src/XPCWrapper.cpp new file mode 100644 index 0000000000..7a4f689471 --- /dev/null +++ b/js/xpconnect/src/XPCWrapper.cpp @@ -0,0 +1,90 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* 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/. */ + +#include "xpcprivate.h" +#include "XPCWrapper.h" +#include "WrapperFactory.h" +#include "AccessCheck.h" + +#include "js/PropertyAndElement.h" // JS_DefineFunction + +using namespace xpc; +using namespace mozilla; +using namespace JS; + +namespace XPCNativeWrapper { + +static inline bool ThrowException(nsresult ex, JSContext* cx) { + XPCThrower::Throw(ex, cx); + + return false; +} + +static bool UnwrapNW(JSContext* cx, unsigned argc, Value* vp) { + JS::CallArgs args = JS::CallArgsFromVp(argc, vp); + if (args.length() != 1) { + return ThrowException(NS_ERROR_XPC_NOT_ENOUGH_ARGS, cx); + } + + JS::RootedValue v(cx, args[0]); + if (!v.isObject() || !js::IsCrossCompartmentWrapper(&v.toObject()) || + !WrapperFactory::AllowWaiver(&v.toObject())) { + args.rval().set(v); + return true; + } + + bool ok = xpc::WrapperFactory::WaiveXrayAndWrap(cx, &v); + NS_ENSURE_TRUE(ok, false); + args.rval().set(v); + return true; +} + +static bool XrayWrapperConstructor(JSContext* cx, unsigned argc, Value* vp) { + JS::CallArgs args = CallArgsFromVp(argc, vp); + if (args.length() == 0) { + return ThrowException(NS_ERROR_XPC_NOT_ENOUGH_ARGS, cx); + } + + if (!args[0].isObject()) { + if (args.isConstructing()) { + return ThrowException(NS_ERROR_XPC_BAD_CONVERT_JS, cx); + } + + args.rval().set(args[0]); + return true; + } + + args.rval().setObject(*js::UncheckedUnwrap(&args[0].toObject())); + return JS_WrapValue(cx, args.rval()); +} +// static +bool AttachNewConstructorObject(JSContext* aCx, + JS::HandleObject aGlobalObject) { + JSAutoRealm ar(aCx, aGlobalObject); + JSFunction* xpcnativewrapper = JS_DefineFunction( + aCx, aGlobalObject, "XPCNativeWrapper", XrayWrapperConstructor, 1, + JSPROP_READONLY | JSPROP_PERMANENT | JSFUN_CONSTRUCTOR); + if (!xpcnativewrapper) { + return false; + } + JS::RootedObject obj(aCx, JS_GetFunctionObject(xpcnativewrapper)); + return JS_DefineFunction(aCx, obj, "unwrap", UnwrapNW, 1, + JSPROP_READONLY | JSPROP_PERMANENT) != nullptr; +} + +} // namespace XPCNativeWrapper + +namespace XPCWrapper { + +JSObject* UnsafeUnwrapSecurityWrapper(JSObject* obj) { + if (js::IsProxy(obj)) { + return js::UncheckedUnwrap(obj); + } + + return obj; +} + +} // namespace XPCWrapper |