The Tor Browser / file comparison
comparison: js/xpconnect/src/XPCWrapper.cpp
js/xpconnect/src/XPCWrapper.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:d6ccb323bbad |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "xpcprivate.h" | |
| 8 #include "XPCWrapper.h" | |
| 9 #include "WrapperFactory.h" | |
| 10 #include "AccessCheck.h" | |
| 11 | |
| 12 using namespace xpc; | |
| 13 using namespace mozilla; | |
| 14 | |
| 15 namespace XPCNativeWrapper { | |
| 16 | |
| 17 static inline | |
| 18 bool | |
| 19 ThrowException(nsresult ex, JSContext *cx) | |
| 20 { | |
| 21 XPCThrower::Throw(ex, cx); | |
| 22 | |
| 23 return false; | |
| 24 } | |
| 25 | |
| 26 static bool | |
| 27 UnwrapNW(JSContext *cx, unsigned argc, jsval *vp) | |
| 28 { | |
| 29 JS::CallArgs args = JS::CallArgsFromVp(argc, vp); | |
| 30 if (args.length() != 1) { | |
| 31 return ThrowException(NS_ERROR_XPC_NOT_ENOUGH_ARGS, cx); | |
| 32 } | |
| 33 | |
| 34 JS::RootedValue v(cx, args[0]); | |
| 35 if (!v.isObject() || !js::IsWrapper(&v.toObject())) { | |
| 36 args.rval().set(v); | |
| 37 return true; | |
| 38 } | |
| 39 | |
| 40 if (AccessCheck::wrapperSubsumes(&v.toObject())) { | |
| 41 bool ok = xpc::WrapperFactory::WaiveXrayAndWrap(cx, &v); | |
| 42 NS_ENSURE_TRUE(ok, false); | |
| 43 } | |
| 44 | |
| 45 args.rval().set(v); | |
| 46 return true; | |
| 47 } | |
| 48 | |
| 49 static bool | |
| 50 XrayWrapperConstructor(JSContext *cx, unsigned argc, jsval *vp) | |
| 51 { | |
| 52 JS::CallArgs args = CallArgsFromVp(argc, vp); | |
| 53 if (args.length() == 0) { | |
| 54 return ThrowException(NS_ERROR_XPC_NOT_ENOUGH_ARGS, cx); | |
| 55 } | |
| 56 | |
| 57 if (!args[0].isObject()) { | |
| 58 args.rval().set(args[0]); | |
| 59 return true; | |
| 60 } | |
| 61 | |
| 62 args.rval().setObject(*js::UncheckedUnwrap(&args[0].toObject())); | |
| 63 return JS_WrapValue(cx, args.rval()); | |
| 64 } | |
| 65 // static | |
| 66 bool | |
| 67 AttachNewConstructorObject(JSContext *aCx, JS::HandleObject aGlobalObject) | |
| 68 { | |
| 69 // Pushing a JSContext calls ActivateDebugger which calls this function, so | |
| 70 // we can't use an AutoJSContext here until JSD is gone. | |
| 71 JSAutoCompartment ac(aCx, aGlobalObject); | |
| 72 JSFunction *xpcnativewrapper = | |
| 73 JS_DefineFunction(aCx, aGlobalObject, "XPCNativeWrapper", | |
| 74 XrayWrapperConstructor, 1, | |
| 75 JSPROP_READONLY | JSPROP_PERMANENT | JSFUN_STUB_GSOPS | JSFUN_CONSTRUCTOR); | |
| 76 if (!xpcnativewrapper) { | |
| 77 return false; | |
| 78 } | |
| 79 JS::RootedObject obj(aCx, JS_GetFunctionObject(xpcnativewrapper)); | |
| 80 return JS_DefineFunction(aCx, obj, "unwrap", UnwrapNW, 1, | |
| 81 JSPROP_READONLY | JSPROP_PERMANENT) != nullptr; | |
| 82 } | |
| 83 | |
| 84 } // namespace XPCNativeWrapper | |
| 85 | |
| 86 namespace XPCWrapper { | |
| 87 | |
| 88 JSObject * | |
| 89 UnsafeUnwrapSecurityWrapper(JSObject *obj) | |
| 90 { | |
| 91 if (js::IsProxy(obj)) { | |
| 92 return js::UncheckedUnwrap(obj); | |
| 93 } | |
| 94 | |
| 95 return obj; | |
| 96 } | |
| 97 | |
| 98 } // namespace XPCWrapper |
