mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
657 lines
17 KiB
C++
657 lines
17 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=4 sw=4 et tw=80:
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "JavaScriptParent.h"
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#include "mozilla/dom/ContentParent.h"
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#include "nsJSUtils.h"
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#include "jsfriendapi.h"
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#include "jsproxy.h"
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#include "HeapAPI.h"
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#include "xpcprivate.h"
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#include "mozilla/Casting.h"
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using namespace js;
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using namespace JS;
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using namespace mozilla;
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using namespace mozilla::jsipc;
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JavaScriptParent::JavaScriptParent()
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: refcount_(1),
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inactive_(false)
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{
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}
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static inline JavaScriptParent *
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ParentOf(JSObject *obj)
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{
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MOZ_ASSERT(JavaScriptParent::IsCPOW(obj));
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return reinterpret_cast<JavaScriptParent *>(GetProxyExtra(obj, 0).toPrivate());
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}
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ObjectId
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JavaScriptParent::idOf(JSObject *obj)
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{
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MOZ_ASSERT(JavaScriptParent::IsCPOW(obj));
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Value v = GetProxyExtra(obj, 1);
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MOZ_ASSERT(v.isDouble());
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ObjectId objId = BitwiseCast<uint64_t>(v.toDouble());
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MOZ_ASSERT(findObject(objId) == obj);
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MOZ_ASSERT(objId);
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return objId;
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}
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int sCPOWProxyHandler;
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class CPOWProxyHandler : public BaseProxyHandler
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{
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public:
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CPOWProxyHandler()
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: BaseProxyHandler(&sCPOWProxyHandler) {}
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virtual ~CPOWProxyHandler() {}
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virtual bool finalizeInBackground(Value priv) MOZ_OVERRIDE {
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return false;
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}
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virtual bool preventExtensions(JSContext *cx, HandleObject proxy) MOZ_OVERRIDE;
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virtual bool getPropertyDescriptor(JSContext *cx, HandleObject proxy, HandleId id,
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PropertyDescriptor *desc, unsigned flags) MOZ_OVERRIDE;
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virtual bool getOwnPropertyDescriptor(JSContext *cx, HandleObject proxy,
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HandleId id, PropertyDescriptor *desc, unsigned flags) MOZ_OVERRIDE;
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virtual bool defineProperty(JSContext *cx, HandleObject proxy, HandleId id,
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PropertyDescriptor *desc) MOZ_OVERRIDE;
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virtual bool getOwnPropertyNames(JSContext *cx, HandleObject proxy,
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AutoIdVector &props) MOZ_OVERRIDE;
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virtual bool delete_(JSContext *cx, HandleObject proxy, HandleId id, bool *bp) MOZ_OVERRIDE;
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virtual bool enumerate(JSContext *cx, HandleObject proxy, AutoIdVector &props) MOZ_OVERRIDE;
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virtual bool has(JSContext *cx, HandleObject proxy, HandleId id, bool *bp) MOZ_OVERRIDE;
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virtual bool hasOwn(JSContext *cx, HandleObject proxy, HandleId id, bool *bp) MOZ_OVERRIDE;
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virtual bool get(JSContext *cx, HandleObject proxy, HandleObject receiver,
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HandleId id, MutableHandleValue vp) MOZ_OVERRIDE;
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virtual bool set(JSContext *cx, JS::HandleObject proxy, JS::HandleObject receiver,
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JS::HandleId id, bool strict, JS::MutableHandleValue vp) MOZ_OVERRIDE;
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virtual bool keys(JSContext *cx, HandleObject proxy, AutoIdVector &props) MOZ_OVERRIDE;
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virtual bool isExtensible(JSContext *cx, HandleObject proxy, bool *extensible) MOZ_OVERRIDE;
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virtual bool call(JSContext *cx, HandleObject proxy, const CallArgs &args) MOZ_OVERRIDE;
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virtual bool objectClassIs(HandleObject obj, js::ESClassValue classValue, JSContext *cx) MOZ_OVERRIDE;
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virtual const char* className(JSContext *cx, HandleObject proxy) MOZ_OVERRIDE;
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virtual void finalize(JSFreeOp *fop, JSObject *proxy) MOZ_OVERRIDE;
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static CPOWProxyHandler singleton;
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};
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CPOWProxyHandler CPOWProxyHandler::singleton;
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bool
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CPOWProxyHandler::preventExtensions(JSContext *cx, HandleObject proxy)
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{
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return ParentOf(proxy)->preventExtensions(cx, proxy);
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}
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bool
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JavaScriptParent::preventExtensions(JSContext *cx, HandleObject proxy)
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{
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ObjectId objId = idOf(proxy);
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ReturnStatus status;
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if (!CallPreventExtensions(objId, &status))
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return ipcfail(cx);
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return ok(cx, status);
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}
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bool
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CPOWProxyHandler::getPropertyDescriptor(JSContext *cx, HandleObject proxy, HandleId id,
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PropertyDescriptor *desc, unsigned flags)
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{
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return ParentOf(proxy)->getPropertyDescriptor(cx, proxy, id, desc, flags);
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}
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bool
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JavaScriptParent::getPropertyDescriptor(JSContext *cx, HandleObject proxy, HandleId id,
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PropertyDescriptor *desc, unsigned flags)
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{
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ObjectId objId = idOf(proxy);
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nsString idstr;
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if (!convertIdToGeckoString(cx, id, &idstr))
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return false;
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ReturnStatus status;
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PPropertyDescriptor result;
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if (!CallGetPropertyDescriptor(objId, idstr, flags, &status, &result))
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return ipcfail(cx);
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if (!ok(cx, status))
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return false;
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return toDescriptor(cx, result, desc);
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}
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bool
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CPOWProxyHandler::getOwnPropertyDescriptor(JSContext *cx, HandleObject proxy,
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HandleId id, PropertyDescriptor *desc, unsigned flags)
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{
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return ParentOf(proxy)->getOwnPropertyDescriptor(cx, proxy, id, desc, flags);
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}
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bool
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JavaScriptParent::getOwnPropertyDescriptor(JSContext *cx, HandleObject proxy, HandleId id,
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PropertyDescriptor *desc, unsigned flags)
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{
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ObjectId objId = idOf(proxy);
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nsString idstr;
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if (!convertIdToGeckoString(cx, id, &idstr))
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return false;
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ReturnStatus status;
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PPropertyDescriptor result;
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if (!CallGetOwnPropertyDescriptor(objId, idstr, flags, &status, &result))
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return ipcfail(cx);
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if (!ok(cx, status))
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return false;
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return toDescriptor(cx, result, desc);
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}
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bool
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CPOWProxyHandler::defineProperty(JSContext *cx, HandleObject proxy, HandleId id,
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PropertyDescriptor *desc)
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{
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return ParentOf(proxy)->defineProperty(cx, proxy, id, desc);
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}
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bool
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JavaScriptParent::defineProperty(JSContext *cx, HandleObject proxy, HandleId id,
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PropertyDescriptor *desc)
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{
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ObjectId objId = idOf(proxy);
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nsString idstr;
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if (!convertIdToGeckoString(cx, id, &idstr))
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return false;
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PPropertyDescriptor descriptor;
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if (!fromDescriptor(cx, *desc, &descriptor))
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return false;
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ReturnStatus status;
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if (!CallDefineProperty(objId, idstr, descriptor, &status))
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return ipcfail(cx);
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return ok(cx, status);
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}
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bool
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CPOWProxyHandler::getOwnPropertyNames(JSContext *cx, HandleObject proxy, AutoIdVector &props)
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{
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return ParentOf(proxy)->getOwnPropertyNames(cx, proxy, props);
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}
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bool
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JavaScriptParent::getOwnPropertyNames(JSContext *cx, HandleObject proxy, AutoIdVector &props)
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{
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return getPropertyNames(cx, proxy, JSITER_OWNONLY | JSITER_HIDDEN, props);
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}
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bool
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CPOWProxyHandler::delete_(JSContext *cx, HandleObject proxy, HandleId id, bool *bp)
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{
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return ParentOf(proxy)->delete_(cx, proxy, id, bp);
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}
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bool
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JavaScriptParent::delete_(JSContext *cx, HandleObject proxy, HandleId id, bool *bp)
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{
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ObjectId objId = idOf(proxy);
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nsString idstr;
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if (!convertIdToGeckoString(cx, id, &idstr))
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return false;
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ReturnStatus status;
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if (!CallDelete(objId, idstr, &status, bp))
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return ipcfail(cx);
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return ok(cx, status);
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}
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bool
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CPOWProxyHandler::enumerate(JSContext *cx, HandleObject proxy, AutoIdVector &props)
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{
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return ParentOf(proxy)->enumerate(cx, proxy, props);
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}
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bool
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JavaScriptParent::enumerate(JSContext *cx, HandleObject proxy, AutoIdVector &props)
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{
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return getPropertyNames(cx, proxy, 0, props);
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}
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bool
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CPOWProxyHandler::has(JSContext *cx, HandleObject proxy, HandleId id, bool *bp)
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{
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return ParentOf(proxy)->has(cx, proxy, id, bp);
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}
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bool
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JavaScriptParent::has(JSContext *cx, HandleObject proxy, HandleId id, bool *bp)
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{
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ObjectId objId = idOf(proxy);
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nsString idstr;
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if (!convertIdToGeckoString(cx, id, &idstr))
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return false;
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ReturnStatus status;
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if (!CallHas(objId, idstr, &status, bp))
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return ipcfail(cx);
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return ok(cx, status);
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}
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bool
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CPOWProxyHandler::hasOwn(JSContext *cx, HandleObject proxy, HandleId id, bool *bp)
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{
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return ParentOf(proxy)->hasOwn(cx, proxy, id, bp);
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}
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bool
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JavaScriptParent::hasOwn(JSContext *cx, HandleObject proxy, HandleId id, bool *bp)
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{
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ObjectId objId = idOf(proxy);
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nsString idstr;
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if (!convertIdToGeckoString(cx, id, &idstr))
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return false;
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ReturnStatus status;
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if (!CallHasOwn(objId, idstr, &status, bp))
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return ipcfail(cx);
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return !!ok(cx, status);
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}
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bool
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CPOWProxyHandler::get(JSContext *cx, HandleObject proxy, HandleObject receiver,
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HandleId id, MutableHandleValue vp)
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{
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return ParentOf(proxy)->get(cx, proxy, receiver, id, vp);
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}
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bool
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JavaScriptParent::get(JSContext *cx, HandleObject proxy, HandleObject receiver,
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HandleId id, MutableHandleValue vp)
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{
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ObjectId objId = idOf(proxy);
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ObjectId receiverId = idOf(receiver);
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nsString idstr;
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if (!convertIdToGeckoString(cx, id, &idstr))
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return false;
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JSVariant val;
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ReturnStatus status;
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if (!CallGet(objId, receiverId, idstr, &status, &val))
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return ipcfail(cx);
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if (!ok(cx, status))
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return false;
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return toValue(cx, val, vp);
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}
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bool
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CPOWProxyHandler::set(JSContext *cx, JS::HandleObject proxy, JS::HandleObject receiver,
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JS::HandleId id, bool strict, JS::MutableHandleValue vp)
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{
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return ParentOf(proxy)->set(cx, proxy, receiver, id, strict, vp);
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}
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bool
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JavaScriptParent::set(JSContext *cx, JS::HandleObject proxy, JS::HandleObject receiver,
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JS::HandleId id, bool strict, JS::MutableHandleValue vp)
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{
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ObjectId objId = idOf(proxy);
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ObjectId receiverId = idOf(receiver);
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nsString idstr;
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if (!convertIdToGeckoString(cx, id, &idstr))
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return false;
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JSVariant val;
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if (!toVariant(cx, vp, &val))
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return false;
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ReturnStatus status;
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JSVariant result;
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if (!CallSet(objId, receiverId, idstr, strict, val, &status, &result))
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return ipcfail(cx);
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if (!ok(cx, status))
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return false;
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return toValue(cx, result, vp);
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}
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bool
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CPOWProxyHandler::keys(JSContext *cx, HandleObject proxy, AutoIdVector &props)
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{
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return ParentOf(proxy)->keys(cx, proxy, props);
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}
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bool
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JavaScriptParent::keys(JSContext *cx, HandleObject proxy, AutoIdVector &props)
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{
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return getPropertyNames(cx, proxy, JSITER_OWNONLY, props);
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}
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bool
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CPOWProxyHandler::isExtensible(JSContext *cx, HandleObject proxy, bool *extensible)
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{
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return ParentOf(proxy)->isExtensible(cx, proxy, extensible);
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}
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bool
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JavaScriptParent::isExtensible(JSContext *cx, HandleObject proxy, bool *extensible)
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{
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ObjectId objId = idOf(proxy);
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ReturnStatus status;
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if (!CallIsExtensible(objId, &status, extensible))
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return ipcfail(cx);
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return ok(cx, status);
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}
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bool
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CPOWProxyHandler::call(JSContext *cx, HandleObject proxy, const CallArgs &args)
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{
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return ParentOf(proxy)->call(cx, proxy, args);
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}
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bool
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JavaScriptParent::call(JSContext *cx, HandleObject proxy, const CallArgs &args)
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{
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ObjectId objId = idOf(proxy);
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InfallibleTArray<JSParam> vals;
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AutoValueVector outobjects(cx);
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RootedValue v(cx);
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for (size_t i = 0; i < args.length() + 2; i++) {
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v = args.base()[i];
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if (v.isObject()) {
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JSObject *obj = &v.toObject();
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if (xpc::IsOutObject(cx, obj)) {
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// Make sure it is not an in-out object.
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JSBool found;
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if (!JS_HasProperty(cx, obj, "value", &found))
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return false;
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if (found) {
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JS_ReportError(cx, "in-out objects cannot be sent via CPOWs yet");
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return false;
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}
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vals.AppendElement(JSParam(void_t()));
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if (!outobjects.append(ObjectValue(*obj)))
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return false;
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continue;
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}
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}
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JSVariant val;
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if (!toVariant(cx, v, &val))
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return false;
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vals.AppendElement(JSParam(val));
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}
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JSVariant result;
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ReturnStatus status;
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InfallibleTArray<JSParam> outparams;
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if (!CallCall(objId, vals, &status, &result, &outparams))
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return ipcfail(cx);
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if (!ok(cx, status))
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return false;
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if (outparams.Length() != outobjects.length())
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return ipcfail(cx);
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for (size_t i = 0; i < outparams.Length(); i++) {
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// Don't bother doing anything for outparams that weren't set.
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if (outparams[i].type() == JSParam::Tvoid_t)
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continue;
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// Take the value the child process returned, and set it on the XPC
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// object.
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if (!toValue(cx, outparams[i], &v))
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return false;
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JSObject *obj = &outobjects[i].toObject();
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if (!JS_SetProperty(cx, obj, "value", v))
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return false;
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}
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if (!toValue(cx, result, args.rval()))
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return false;
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return true;
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}
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bool
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CPOWProxyHandler::objectClassIs(HandleObject proxy, js::ESClassValue classValue, JSContext *cx)
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{
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return ParentOf(proxy)->objectClassIs(cx, proxy, classValue);
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}
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bool
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JavaScriptParent::objectClassIs(JSContext *cx, HandleObject proxy, js::ESClassValue classValue)
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{
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ObjectId objId = idOf(proxy);
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// This function is assumed infallible, so we just return false if the IPC
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// channel fails.
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bool result;
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if (!CallObjectClassIs(objId, classValue, &result))
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return false;
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return result;
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}
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const char *
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CPOWProxyHandler::className(JSContext *cx, HandleObject proxy)
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{
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return ParentOf(proxy)->className(cx, proxy);
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}
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const char *
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JavaScriptParent::className(JSContext *cx, HandleObject proxy)
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{
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ObjectId objId = idOf(proxy);
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nsString name;
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if (!CallClassName(objId, &name))
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return NULL;
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return ToNewCString(name);
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}
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void
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CPOWProxyHandler::finalize(JSFreeOp *fop, JSObject *proxy)
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{
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ParentOf(proxy)->drop(proxy);
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}
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void
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JavaScriptParent::drop(JSObject *obj)
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{
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ObjectId objId = idOf(obj);
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objects_.remove(objId);
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if (!inactive_ && !SendDropObject(objId))
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(void)0;
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decref();
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}
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bool
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JavaScriptParent::init()
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{
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if (!JavaScriptShared::init())
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return false;
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return true;
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}
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bool
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JavaScriptParent::makeId(JSContext *cx, JSObject *obj, ObjectId *idp)
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{
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if (!IsProxy(obj) || GetProxyHandler(obj) != &CPOWProxyHandler::singleton) {
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JS_ReportError(cx, "cannot ipc non-cpow object");
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return false;
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}
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*idp = idOf(obj);
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return true;
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}
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bool
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JavaScriptParent::getPropertyNames(JSContext *cx, HandleObject proxy, uint32_t flags, AutoIdVector &props)
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{
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ObjectId objId = idOf(proxy);
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ReturnStatus status;
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InfallibleTArray<nsString> names;
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if (!CallGetPropertyNames(objId, flags, &status, &names))
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return ipcfail(cx);
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if (!ok(cx, status))
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return false;
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for (size_t i = 0; i < names.Length(); i++) {
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RootedId name(cx);
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if (!convertGeckoStringToId(cx, names[i], &name))
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return false;
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if (!props.append(name))
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return false;
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}
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return true;
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}
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JSObject *
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JavaScriptParent::unwrap(JSContext *cx, ObjectId objId)
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{
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if (JSObject *obj = findObject(objId)) {
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if (!JS_WrapObject(cx, &obj))
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return NULL;
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return obj;
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}
|
|
|
|
if (objId > MAX_CPOW_IDS) {
|
|
JS_ReportError(cx, "unusable CPOW id");
|
|
return NULL;
|
|
}
|
|
|
|
bool callable = !!(objId & OBJECT_IS_CALLABLE);
|
|
|
|
RootedValue v(cx, UndefinedValue());
|
|
JSObject *obj = NewProxyObject(cx,
|
|
&CPOWProxyHandler::singleton,
|
|
v,
|
|
NULL,
|
|
NULL,
|
|
callable ? ProxyIsCallable : ProxyNotCallable);
|
|
if (!obj)
|
|
return NULL;
|
|
|
|
if (!objects_.add(objId, obj))
|
|
return NULL;
|
|
|
|
// Incref once we know the decref will be called.
|
|
incref();
|
|
|
|
SetProxyExtra(obj, 0, PrivateValue(this));
|
|
SetProxyExtra(obj, 1, DoubleValue(BitwiseCast<double>(objId)));
|
|
return obj;
|
|
}
|
|
|
|
bool
|
|
JavaScriptParent::ipcfail(JSContext *cx)
|
|
{
|
|
JS_ReportError(cx, "catastrophic IPC failure");
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
JavaScriptParent::ok(JSContext *cx, const ReturnStatus &status)
|
|
{
|
|
if (status.ok())
|
|
return true;
|
|
|
|
RootedValue exn(cx);
|
|
if (!toValue(cx, status.exn(), &exn))
|
|
return false;
|
|
|
|
JS_SetPendingException(cx, exn);
|
|
return false;
|
|
}
|
|
|
|
void
|
|
JavaScriptParent::decref()
|
|
{
|
|
refcount_--;
|
|
if (!refcount_)
|
|
delete this;
|
|
}
|
|
|
|
void
|
|
JavaScriptParent::incref()
|
|
{
|
|
refcount_++;
|
|
}
|
|
|
|
void
|
|
JavaScriptParent::destroyFromContent()
|
|
{
|
|
inactive_ = true;
|
|
decref();
|
|
}
|
|
|
|
/* static */ bool
|
|
JavaScriptParent::IsCPOW(JSObject *obj)
|
|
{
|
|
return IsProxy(obj) && GetProxyHandler(obj) == &CPOWProxyHandler::singleton;
|
|
}
|
|
|
|
/* static */ nsresult
|
|
JavaScriptParent::InstanceOf(JSObject *obj, const nsID *id, bool *bp)
|
|
{
|
|
return ParentOf(obj)->instanceOf(obj, id, bp);
|
|
}
|
|
|
|
nsresult
|
|
JavaScriptParent::instanceOf(JSObject *obj, const nsID *id, bool *bp)
|
|
{
|
|
ObjectId objId = idOf(obj);
|
|
|
|
JSIID iid;
|
|
ConvertID(*id, &iid);
|
|
|
|
ReturnStatus status;
|
|
if (!CallInstanceOf(objId, iid, &status, bp))
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
if (!status.ok())
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
return NS_OK;
|
|
}
|