• file
• revisions
• annotate
• diff
• comparison
• raw

js/src/vm/ProxyObject.h@129ffea94266 (annotated)

js/src/vm/ProxyObject.h

Sat, 03 Jan 2015 20:18:00 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Sat, 03 Jan 2015 20:18:00 +0100

branch

TOR_BUG_3246

changeset 7

129ffea94266

permissions

-rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

michael@0	1	/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0	2	* vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0	3	* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	4	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	5	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	6
michael@0	7	#ifndef vm_ProxyObject_h
michael@0	8	#define vm_ProxyObject_h
michael@0	9
michael@0	10	#include "jsobj.h"
michael@0	11	#include "jsproxy.h"
michael@0	12
michael@0	13	namespace js {
michael@0	14
michael@0	15	// This is the base class for the various kinds of proxy objects. It's never
michael@0	16	// instantiated.
michael@0	17	class ProxyObject : public JSObject
michael@0	18	{
michael@0	19	// These are just local renamings of the slot constants that are part of
michael@0	20	// the API in jsproxy.h.
michael@0	21	static const uint32_t PRIVATE_SLOT = PROXY_PRIVATE_SLOT;
michael@0	22	static const uint32_t HANDLER_SLOT = PROXY_HANDLER_SLOT;
michael@0	23	static const uint32_t EXTRA_SLOT = PROXY_EXTRA_SLOT;
michael@0	24
michael@0	25	public:
michael@0	26	static ProxyObject *New(JSContext *cx, BaseProxyHandler *handler, HandleValue priv,
michael@0	27	TaggedProto proto_, JSObject *parent_,
michael@0	28	const ProxyOptions &options);
michael@0	29
michael@0	30	const Value &private_() {
michael@0	31	return GetReservedSlot(this, PRIVATE_SLOT);
michael@0	32	}
michael@0	33
michael@0	34	void initCrossCompartmentPrivate(HandleValue priv);
michael@0	35
michael@0	36	HeapSlot *slotOfPrivate() {
michael@0	37	return &getReservedSlotRef(PRIVATE_SLOT);
michael@0	38	}
michael@0	39
michael@0	40	JSObject *target() const {
michael@0	41	return const_cast<ProxyObject*>(this)->private_().toObjectOrNull();
michael@0	42	}
michael@0	43
michael@0	44	BaseProxyHandler *handler() {
michael@0	45	return static_cast<BaseProxyHandler*>(GetReservedSlot(this, HANDLER_SLOT).toPrivate());
michael@0	46	}
michael@0	47
michael@0	48	void initHandler(BaseProxyHandler *handler);
michael@0	49
michael@0	50	void setHandler(BaseProxyHandler *handler) {
michael@0	51	SetReservedSlot(this, HANDLER_SLOT, PrivateValue(handler));
michael@0	52	}
michael@0	53
michael@0	54	static size_t offsetOfHandler() {
michael@0	55	return getFixedSlotOffset(HANDLER_SLOT);
michael@0	56	}
michael@0	57
michael@0	58	const Value &extra(size_t n) const {
michael@0	59	JS_ASSERT(n == 0 || n == 1);
michael@0	60	return GetReservedSlot(const_cast<ProxyObject*>(this), EXTRA_SLOT + n);
michael@0	61	}
michael@0	62
michael@0	63	void setExtra(size_t n, const Value &extra) {
michael@0	64	JS_ASSERT(n == 0 || n == 1);
michael@0	65	SetReservedSlot(this, EXTRA_SLOT + n, extra);
michael@0	66	}
michael@0	67
michael@0	68	private:
michael@0	69	HeapSlot *slotOfExtra(size_t n) {
michael@0	70	JS_ASSERT(n == 0 || n == 1);
michael@0	71	return &getReservedSlotRef(EXTRA_SLOT + n);
michael@0	72	}
michael@0	73
michael@0	74	HeapSlot *slotOfClassSpecific(size_t n) {
michael@0	75	JS_ASSERT(n >= PROXY_MINIMUM_SLOTS);
michael@0	76	JS_ASSERT(n < JSCLASS_RESERVED_SLOTS(getClass()));
michael@0	77	return &getReservedSlotRef(n);
michael@0	78	}
michael@0	79
michael@0	80	static bool isValidProxyClass(const Class *clasp) {
michael@0	81	// Since we can take classes from the outside, make sure that they
michael@0	82	// are "sane". They have to quack enough like proxies for us to belive
michael@0	83	// they should be treated as such.
michael@0	84
michael@0	85	// proxy_Trace is just a trivial wrapper around ProxyObject::trace for
michael@0	86	// friend api exposure.
michael@0	87	return clasp->isProxy() &&
michael@0	88	(clasp->flags & JSCLASS_IMPLEMENTS_BARRIERS) &&
michael@0	89	clasp->trace == proxy_Trace &&
michael@0	90	JSCLASS_RESERVED_SLOTS(clasp) >= PROXY_MINIMUM_SLOTS;
michael@0	91	}
michael@0	92
michael@0	93	public:
michael@0	94	static unsigned grayLinkSlot(JSObject *obj);
michael@0	95
michael@0	96	void renew(JSContext *cx, BaseProxyHandler *handler, Value priv);
michael@0	97
michael@0	98	static void trace(JSTracer *trc, JSObject *obj);
michael@0	99
michael@0	100	void nuke(BaseProxyHandler *handler);
michael@0	101
michael@0	102	static const Class callableClass_;
michael@0	103	static const Class uncallableClass_;
michael@0	104	};
michael@0	105
michael@0	106	} // namespace js
michael@0	107
michael@0	108	// Note: the following |JSObject::is<T>| methods are implemented in terms of
michael@0	109	// the Is*Proxy() friend API functions to ensure the implementations are tied
michael@0	110	// together. The exception is |JSObject::is<js::OuterWindowProxyObject>()
michael@0	111	// const|, which uses the standard template definition, because there is no
michael@0	112	// IsOuterWindowProxy() function in the friend API.
michael@0	113
michael@0	114	template<>
michael@0	115	inline bool
michael@0	116	JSObject::is<js::ProxyObject>() const
michael@0	117	{
michael@0	118	return js::IsProxy(const_cast<JSObject*>(this));
michael@0	119	}
michael@0	120
michael@0	121	#endif /* vm_ProxyObject_h */