// static
void
XPCWrappedNativeScope::DebugDumpAllScopes(int16_t depth)
{
#ifdef DEBUG
depth-- ;
// get scope count.
int count = 0;
XPCWrappedNativeScope* cur;
for (cur = gScopes; cur; cur = cur->mNext)
count++ ;
XPC_LOG_ALWAYS(("chain of %d XPCWrappedNativeScope(s)", count));
XPC_LOG_INDENT();
XPC_LOG_ALWAYS(("gDyingScopes @ %x", gDyingScopes));
if (depth)
for (cur = gScopes; cur; cur = cur->mNext)
cur->DebugDump(depth);
XPC_LOG_OUTDENT();
#endif
}
// static
XPCWrappedNativeScope*
XPCWrappedNativeScope::GetNewOrUsed(XPCCallContext& ccx, JSObject* aGlobal)
{
XPCWrappedNativeScope* scope = FindInJSObjectScope(ccx, aGlobal, true);
if (!scope)
scope = new XPCWrappedNativeScope(ccx, aGlobal);
else {
// We need to call SetGlobal in order to refresh our cached
// mPrototypeJSObject and to clear mPrototypeNoHelper (so we get a new
// new one if requested in the new scope) in the case where the global
// object is being reused (JS_ClearScope has been called). NOTE: We are
// only called by nsXPConnect::InitClasses.
scope->SetGlobal(ccx, aGlobal);
}
if (js::GetObjectClass(aGlobal)->flags & JSCLASS_XPCONNECT_GLOBAL)
JS_ALWAYS_TRUE(JS_SetReservedSlot(ccx, aGlobal,
JSCLASS_GLOBAL_SLOT_COUNT,
PRIVATE_TO_JSVAL(scope)));
return scope;
}
bool
InterposeCall(JSContext* cx, JS::HandleObject target, const JS::CallArgs& args, bool* done)
{
*done = false;
XPCWrappedNativeScope* scope = ObjectScope(CurrentGlobalOrNull(cx));
MOZ_ASSERT(scope->HasInterposition());
nsCOMPtr<nsIAddonInterposition> interp = scope->GetInterposition();
RootedObject unwrappedTarget(cx, UncheckedUnwrap(target));
XPCWrappedNativeScope* targetScope = ObjectScope(unwrappedTarget);
bool hasInterpostion = targetScope->HasCallInterposition();
if (!hasInterpostion)
return true;
// If there is a call interpostion, we don't want to propogate the
// call to Base:
*done = true;
JSAddonId* addonId = AddonIdOfObject(target);
RootedValue addonIdValue(cx, StringValue(StringOfAddonId(addonId)));
RootedValue targetValue(cx, ObjectValue(*target));
RootedValue thisValue(cx, args.thisv());
RootedObject argsArray(cx, ConvertArgsToArray(cx, args));
if (!argsArray)
return false;
RootedValue argsVal(cx, ObjectValue(*argsArray));
RootedValue returnVal(cx);
nsresult rv = interp->InterposeCall(addonIdValue, targetValue,
thisValue, argsVal, args.rval());
if (NS_FAILED(rv)) {
xpc::Throw(cx, rv);
return false;
}
return true;
}
/* void initClasses (in JSContextPtr aJSContext, in JSObjectPtr aGlobalJSObj); */
NS_IMETHODIMP
nsXPConnect::InitClasses(JSContext * aJSContext, JSObject * aGlobalJSObj)
{
MOZ_ASSERT(aJSContext, "bad param");
MOZ_ASSERT(aGlobalJSObj, "bad param");
RootedObject globalJSObj(aJSContext, aGlobalJSObj);
JSAutoCompartment ac(aJSContext, globalJSObj);
XPCWrappedNativeScope* scope =
XPCWrappedNativeScope::GetNewOrUsed(aJSContext, globalJSObj);
if (!scope)
return UnexpectedFailure(NS_ERROR_FAILURE);
scope->RemoveWrappedNativeProtos();
if (!XPCNativeWrapper::AttachNewConstructorObject(aJSContext, globalJSObj))
return UnexpectedFailure(NS_ERROR_FAILURE);
return NS_OK;
}
XPCWrappedNativeScope::XPCWrappedNativeScope(XPCCallContext& ccx,
JSObject* aGlobal,
nsISupports* aNative)
: mRuntime(ccx.GetRuntime()),
mWrappedNativeMap(Native2WrappedNativeMap::newMap(XPC_NATIVE_MAP_SIZE)),
mWrappedNativeProtoMap(ClassInfo2WrappedNativeProtoMap::newMap(XPC_NATIVE_PROTO_MAP_SIZE)),
mMainThreadWrappedNativeProtoMap(ClassInfo2WrappedNativeProtoMap::newMap(XPC_NATIVE_PROTO_MAP_SIZE)),
mComponents(nsnull),
mNext(nsnull),
mGlobalJSObject(nsnull),
mPrototypeJSObject(nsnull),
mPrototypeNoHelper(nsnull),
mScriptObjectPrincipal(nsnull),
mNewDOMBindingsEnabled(ccx.GetRuntime()->NewDOMBindingsEnabled()),
mExperimentalBindingsEnabled(ccx.GetRuntime()->ExperimentalBindingsEnabled())
{
// add ourselves to the scopes list
{ // scoped lock
XPCAutoLock lock(mRuntime->GetMapLock());
#ifdef DEBUG
for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext)
NS_ASSERTION(aGlobal != cur->GetGlobalJSObject(), "dup object");
#endif
mNext = gScopes;
gScopes = this;
// Grab the XPCContext associated with our context.
mContext = XPCContext::GetXPCContext(ccx.GetJSContext());
mContext->AddScope(this);
}
if (aGlobal)
SetGlobal(ccx, aGlobal, aNative);
DEBUG_TrackNewScope(this);
MOZ_COUNT_CTOR(XPCWrappedNativeScope);
}
XPCWrappedNativeScope::XPCWrappedNativeScope(JSContext *cx,
JSObject* aGlobal)
: mWrappedNativeMap(Native2WrappedNativeMap::newMap(XPC_NATIVE_MAP_SIZE)),
mWrappedNativeProtoMap(ClassInfo2WrappedNativeProtoMap::newMap(XPC_NATIVE_PROTO_MAP_SIZE)),
mMainThreadWrappedNativeProtoMap(ClassInfo2WrappedNativeProtoMap::newMap(XPC_NATIVE_PROTO_MAP_SIZE)),
mComponents(nullptr),
mNext(nullptr),
mGlobalJSObject(nullptr),
mPrototypeNoHelper(nullptr),
mExperimentalBindingsEnabled(XPCJSRuntime::Get()->ExperimentalBindingsEnabled())
{
// add ourselves to the scopes list
{ // scoped lock
XPCAutoLock lock(XPCJSRuntime::Get()->GetMapLock());
#ifdef DEBUG
for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext)
MOZ_ASSERT(aGlobal != cur->GetGlobalJSObjectPreserveColor(), "dup object");
#endif
mNext = gScopes;
gScopes = this;
// Grab the XPCContext associated with our context.
mContext = XPCContext::GetXPCContext(cx);
mContext->AddScope(this);
}
if (aGlobal)
SetGlobal(cx, aGlobal);
DEBUG_TrackNewScope(this);
MOZ_COUNT_CTOR(XPCWrappedNativeScope);
// Attach ourselves to the compartment private.
CompartmentPrivate *priv = EnsureCompartmentPrivate(aGlobal);
priv->scope = this;
}
XPCWrappedNativeScope::XPCWrappedNativeScope(XPCCallContext& ccx,
JSObject* aGlobal)
: mRuntime(ccx.GetRuntime()),
mWrappedNativeMap(Native2WrappedNativeMap::newMap(XPC_NATIVE_MAP_SIZE)),
mWrappedNativeProtoMap(ClassInfo2WrappedNativeProtoMap::newMap(XPC_NATIVE_PROTO_MAP_SIZE)),
mWrapperMap(WrappedNative2WrapperMap::newMap(XPC_WRAPPER_MAP_SIZE)),
mComponents(nsnull),
mNext(nsnull),
mGlobalJSObject(nsnull),
mPrototypeJSObject(nsnull),
mPrototypeJSFunction(nsnull),
mPrototypeNoHelper(nsnull)
{
// add ourselves to the scopes list
{ // scoped lock
XPCAutoLock lock(mRuntime->GetMapLock());
#ifdef DEBUG
for(XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext)
NS_ASSERTION(aGlobal != cur->GetGlobalJSObject(), "dup object");
#endif
mNext = gScopes;
gScopes = this;
// Grab the XPCContext associated with our context.
mContext = mRuntime->GetContextMap()->Find(ccx.GetJSContext());
NS_ASSERTION(mContext, "Context map is not synchronized");
mContext->AddScope(this);
}
if(aGlobal)
SetGlobal(ccx, aGlobal);
DEBUG_TrackNewScope(this);
MOZ_COUNT_CTOR(XPCWrappedNativeScope);
}
static void
XPC_XOW_Finalize(JSContext *cx, JSObject *obj)
{
JSObject *wrappedObj = GetWrappedObject(cx, obj);
if (!wrappedObj) {
return;
}
jsval flags = GetFlags(cx, obj);
if (HAS_FLAGS(flags, FLAG_IS_CACHED)) {
// We know that it's safe to access our wrapped object.
XPCWrappedNativeWithXOW *wnxow =
static_cast<XPCWrappedNativeWithXOW *>(xpc_GetJSPrivate(wrappedObj));
wnxow->SetXOW(nsnull);
JS_SetReservedSlot(cx, obj, sWrappedObjSlot, JSVAL_VOID);
SetFlags(cx, obj, RemoveFlags(flags, FLAG_IS_CACHED));
}
// Get our scope.
jsval scopeVal;
if (!JS_GetReservedSlot(cx, obj, XPC_XOW_ScopeSlot, &scopeVal)) {
return;
}
// Now that we have our scope, see if it's going away. If it is,
// then our work here is going to be done when we destroy the scope
// entirely. Scope can be null if we're an enumerating XOW.
XPCWrappedNativeScope *scope = reinterpret_cast<XPCWrappedNativeScope *>
(JSVAL_TO_PRIVATE(scopeVal));
if (!scope) {
return;
}
// Remove ourselves from the map.
scope->GetWrapperMap()->Remove(wrappedObj);
}
JSObject*
xpc::GetAddonScope(JSContext* cx, JS::HandleObject contentScope, JSAddonId* addonId)
{
MOZ_RELEASE_ASSERT(!IsInAddonScope(contentScope));
if (!addonId || !CompartmentPerAddon()) {
return js::GetGlobalForObjectCrossCompartment(contentScope);
}
JSAutoCompartment ac(cx, contentScope);
XPCWrappedNativeScope* nativeScope = CompartmentPrivate::Get(contentScope)->scope;
if (nativeScope->GetPrincipal() != nsXPConnect::SystemPrincipal()) {
// This can happen if, for example, Jetpack loads an unprivileged HTML
// page from the add-on. It's not clear what to do there, so we just use
// the normal global.
return js::GetGlobalForObjectCrossCompartment(contentScope);
}
JSObject* scope = nativeScope->EnsureAddonScope(cx, addonId);
NS_ENSURE_TRUE(scope, nullptr);
scope = js::UncheckedUnwrap(scope);
JS::ExposeObjectToActiveJS(scope);
return scope;
}
void
XPCWrappedNativeScope::AddSizeOfAllScopesIncludingThis(ScopeSizeInfo* scopeSizeInfo)
{
for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext)
cur->AddSizeOfIncludingThis(scopeSizeInfo);
}
XPCWrappedNativeScope::XPCWrappedNativeScope(JSContext* cx,
JS::HandleObject aGlobal)
: mWrappedNativeMap(Native2WrappedNativeMap::newMap(XPC_NATIVE_MAP_LENGTH)),
mWrappedNativeProtoMap(ClassInfo2WrappedNativeProtoMap::newMap(XPC_NATIVE_PROTO_MAP_LENGTH)),
mComponents(nullptr),
mNext(nullptr),
mGlobalJSObject(aGlobal),
mHasCallInterpositions(false),
mIsContentXBLScope(false),
mIsAddonScope(false)
{
// add ourselves to the scopes list
{
MOZ_ASSERT(aGlobal);
DebugOnly<const js::Class*> clasp = js::GetObjectClass(aGlobal);
MOZ_ASSERT(clasp->flags & (JSCLASS_PRIVATE_IS_NSISUPPORTS |
JSCLASS_HAS_PRIVATE) ||
mozilla::dom::IsDOMClass(clasp));
#ifdef DEBUG
for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext)
MOZ_ASSERT(aGlobal != cur->GetGlobalJSObjectPreserveColor(), "dup object");
#endif
mNext = gScopes;
gScopes = this;
}
MOZ_COUNT_CTOR(XPCWrappedNativeScope);
// Create the compartment private.
JSCompartment* c = js::GetObjectCompartment(aGlobal);
MOZ_ASSERT(!JS_GetCompartmentPrivate(c));
CompartmentPrivate* priv = new CompartmentPrivate(c);
JS_SetCompartmentPrivate(c, priv);
// Attach ourselves to the compartment private.
priv->scope = this;
// Determine whether we would allow an XBL scope in this situation.
// In addition to being pref-controlled, we also disable XBL scopes for
// remote XUL domains, _except_ if we have an additional pref override set.
nsIPrincipal* principal = GetPrincipal();
mAllowContentXBLScope = !RemoteXULForbidsXBLScope(principal, aGlobal);
// Determine whether to use an XBL scope.
mUseContentXBLScope = mAllowContentXBLScope;
if (mUseContentXBLScope) {
const js::Class* clasp = js::GetObjectClass(mGlobalJSObject);
mUseContentXBLScope = !strcmp(clasp->name, "Window");
}
if (mUseContentXBLScope) {
mUseContentXBLScope = principal && !nsContentUtils::IsSystemPrincipal(principal);
}
JSAddonId* addonId = JS::AddonIdOfObject(aGlobal);
if (gInterpositionMap) {
bool isSystem = nsContentUtils::IsSystemPrincipal(principal);
bool waiveInterposition = priv->waiveInterposition;
InterpositionMap::Ptr interposition = gInterpositionMap->lookup(addonId);
if (!waiveInterposition && interposition) {
MOZ_RELEASE_ASSERT(isSystem);
mInterposition = interposition->value();
}
// We also want multiprocessCompatible add-ons to have a default interposition.
if (!mInterposition && addonId && isSystem) {
bool interpositionEnabled = mozilla::Preferences::GetBool(
"extensions.interposition.enabled", false);
if (interpositionEnabled) {
mInterposition = do_GetService("@mozilla.org/addons/default-addon-shims;1");
MOZ_ASSERT(mInterposition);
UpdateInterpositionWhitelist(cx, mInterposition);
}
}
}
}
bool
UseContentXBLScope(JSCompartment* c)
{
XPCWrappedNativeScope* scope = CompartmentPrivate::Get(c)->scope;
return scope && scope->UseContentXBLScope();
}
JSBool
WrapObject(JSContext *cx, JSObject *scope, jsval v, jsval *vp)
{
// This might be redundant if called from XPC_SJOW_Construct, but it should
// be cheap in that case.
JSObject *objToWrap = UnsafeUnwrapSecurityWrapper(cx, JSVAL_TO_OBJECT(v));
if (!objToWrap ||
JS_TypeOfValue(cx, OBJECT_TO_JSVAL(objToWrap)) == JSTYPE_XML) {
return ThrowException(NS_ERROR_INVALID_ARG, cx);
}
// Prevent script created Script objects from ever being wrapped
// with XPCSafeJSObjectWrapper, and never let the eval function
// object be directly wrapped.
if (objToWrap->getClass() == &js_ScriptClass ||
(JS_ObjectIsFunction(cx, objToWrap) &&
JS_GetFunctionFastNative(cx, JS_ValueToFunction(cx, v)) ==
XPCWrapper::sEvalNative)) {
return ThrowException(NS_ERROR_INVALID_ARG, cx);
}
XPCWrappedNativeScope *xpcscope =
XPCWrappedNativeScope::FindInJSObjectScope(cx, scope);
NS_ASSERTION(xpcscope, "what crazy scope are we in?");
XPCWrappedNative *wrappedNative;
WrapperType type = xpcscope->GetWrapperFor(cx, objToWrap, SJOW,
&wrappedNative);
// NB: We allow XOW here because we're as restrictive as it is (and we know
// we're same origin here).
if (type != NONE && type != XOW && !(type & SJOW)) {
return ThrowException(NS_ERROR_INVALID_ARG, cx);
}
SLIM_LOG_WILL_MORPH(cx, objToWrap);
if (IS_SLIM_WRAPPER(objToWrap) && !MorphSlimWrapper(cx, objToWrap)) {
return ThrowException(NS_ERROR_FAILURE, cx);
}
XPCWrappedNative *wn =
XPCWrappedNative::GetWrappedNativeOfJSObject(cx, objToWrap);
if (wn) {
CheckWindow(wn);
}
JSObject *wrapperObj =
JS_NewObjectWithGivenProto(cx, js::Jsvalify(&SJOWClass), nsnull, scope);
if (!wrapperObj) {
// JS_NewObjectWithGivenProto already threw.
return JS_FALSE;
}
*vp = OBJECT_TO_JSVAL(wrapperObj);
if (!JS_SetReservedSlot(cx, wrapperObj, XPCWrapper::sWrappedObjSlot,
OBJECT_TO_JSVAL(objToWrap)) ||
!JS_SetReservedSlot(cx, wrapperObj, XPCWrapper::sFlagsSlot, JSVAL_ZERO)) {
return JS_FALSE;
}
return JS_TRUE;
}
bool
InterposeProperty(JSContext* cx, HandleObject target, const nsIID* iid, HandleId id,
MutableHandle<JSPropertyDescriptor> descriptor)
{
// We only want to do interpostion on DOM instances and
// wrapped natives.
RootedObject unwrapped(cx, UncheckedUnwrap(target));
const js::Class* clasp = js::GetObjectClass(unwrapped);
bool isCPOW = jsipc::IsWrappedCPOW(unwrapped);
if (!mozilla::dom::IsDOMClass(clasp) &&
!IS_WN_CLASS(clasp) &&
!IS_PROTO_CLASS(clasp) &&
clasp != &OuterWindowProxyClass &&
!isCPOW) {
return true;
}
XPCWrappedNativeScope* scope = ObjectScope(CurrentGlobalOrNull(cx));
MOZ_ASSERT(scope->HasInterposition());
nsCOMPtr<nsIAddonInterposition> interp = scope->GetInterposition();
InterpositionWhitelist* wl = XPCWrappedNativeScope::GetInterpositionWhitelist(interp);
// We do InterposeProperty only if the id is on the whitelist of the interpostion
// or if the target is a CPOW.
if ((!wl || !wl->has(JSID_BITS(id.get()))) && !isCPOW)
return true;
JSAddonId* addonId = AddonIdOfObject(target);
RootedValue addonIdValue(cx, StringValue(StringOfAddonId(addonId)));
RootedValue prop(cx, IdToValue(id));
RootedValue targetValue(cx, ObjectValue(*target));
RootedValue descriptorVal(cx);
nsresult rv = interp->InterposeProperty(addonIdValue, targetValue,
iid, prop, &descriptorVal);
if (NS_FAILED(rv)) {
xpc::Throw(cx, rv);
return false;
}
if (!descriptorVal.isObject())
return true;
// We need to be careful parsing descriptorVal. |cx| is in the compartment
// of the add-on and the descriptor is in the compartment of the
// interposition. We could wrap the descriptor in the add-on's compartment
// and then parse it. However, parsing the descriptor fetches properties
// from it, and we would try to interpose on those property accesses. So
// instead we parse in the interposition's compartment and then wrap the
// descriptor.
{
JSAutoCompartment ac(cx, &descriptorVal.toObject());
if (!JS::ObjectToCompletePropertyDescriptor(cx, target, descriptorVal, descriptor))
return false;
}
// Always make the property non-configurable regardless of what the
// interposition wants.
descriptor.setAttributes(descriptor.attributes() | JSPROP_PERMANENT);
if (!JS_WrapPropertyDescriptor(cx, descriptor))
return false;
return true;
}
bool AllowXBLScope(JSCompartment *c)
{
XPCWrappedNativeScope *scope = EnsureCompartmentPrivate(c)->scope;
return scope && scope->AllowXBLScope();
}
XPCWrappedNativeScope::XPCWrappedNativeScope(JSContext *cx,
JS::HandleObject aGlobal)
: mWrappedNativeMap(Native2WrappedNativeMap::newMap(XPC_NATIVE_MAP_LENGTH)),
mWrappedNativeProtoMap(ClassInfo2WrappedNativeProtoMap::newMap(XPC_NATIVE_PROTO_MAP_LENGTH)),
mComponents(nullptr),
mNext(nullptr),
mGlobalJSObject(aGlobal),
mIsContentXBLScope(false),
mIsAddonScope(false)
{
// add ourselves to the scopes list
{
MOZ_ASSERT(aGlobal);
DebugOnly<const js::Class*> clasp = js::GetObjectClass(aGlobal);
MOZ_ASSERT(clasp->flags & (JSCLASS_PRIVATE_IS_NSISUPPORTS |
JSCLASS_HAS_PRIVATE) ||
mozilla::dom::IsDOMClass(clasp));
#ifdef DEBUG
for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext)
MOZ_ASSERT(aGlobal != cur->GetGlobalJSObjectPreserveColor(), "dup object");
#endif
mNext = gScopes;
gScopes = this;
}
MOZ_COUNT_CTOR(XPCWrappedNativeScope);
// Create the compartment private.
JSCompartment *c = js::GetObjectCompartment(aGlobal);
MOZ_ASSERT(!JS_GetCompartmentPrivate(c));
CompartmentPrivate *priv = new CompartmentPrivate(c);
JS_SetCompartmentPrivate(c, priv);
// Attach ourselves to the compartment private.
priv->scope = this;
// Determine whether we would allow an XBL scope in this situation.
// In addition to being pref-controlled, we also disable XBL scopes for
// remote XUL domains, _except_ if we have an additional pref override set.
nsIPrincipal *principal = GetPrincipal();
mAllowContentXBLScope = !RemoteXULForbidsXBLScope(principal, aGlobal);
// Determine whether to use an XBL scope.
mUseContentXBLScope = mAllowContentXBLScope;
if (mUseContentXBLScope) {
const js::Class *clasp = js::GetObjectClass(mGlobalJSObject);
mUseContentXBLScope = !strcmp(clasp->name, "Window") ||
!strcmp(clasp->name, "ChromeWindow") ||
!strcmp(clasp->name, "ModalContentWindow");
}
if (mUseContentXBLScope) {
mUseContentXBLScope = principal && !nsContentUtils::IsSystemPrincipal(principal);
}
JSAddonId *addonId = JS::AddonIdOfObject(aGlobal);
if (gInterpositionMap) {
if (InterpositionMap::Ptr p = gInterpositionMap->lookup(addonId)) {
MOZ_RELEASE_ASSERT(nsContentUtils::IsSystemPrincipal(principal));
mInterposition = p->value();
}
}
}
// static
XPCWrappedNativeScope*
XPCWrappedNativeScope::FindInJSObjectScope(JSContext* cx, JSObject* obj,
JSBool OKIfNotInitialized,
XPCJSRuntime* runtime)
{
XPCWrappedNativeScope* scope;
if (!obj)
return nsnull;
// If this object is itself a wrapped native then we can get the
// scope directly.
scope = GetScopeOfObject(obj);
if (scope)
return scope;
// Else we'll have to look up the parent chain to get the scope
JSAutoEnterCompartment ac;
ac.enterAndIgnoreErrors(cx, obj);
#ifdef DEBUG
JSObject *startingObj = obj;
#endif
obj = JS_GetGlobalForObject(cx, obj);
if (js::GetObjectClass(obj)->flags & JSCLASS_XPCONNECT_GLOBAL) {
scope = XPCWrappedNativeScope::GetNativeScope(cx, obj);
if (scope)
return scope;
}
if (!runtime) {
runtime = nsXPConnect::GetRuntimeInstance();
NS_ASSERTION(runtime, "This should never be null!");
}
// XXX We are assuming that the scope count is low enough that traversing
// the linked list is more reasonable then doing a hashtable lookup.
XPCWrappedNativeScope* found = nsnull;
{ // scoped lock
XPCAutoLock lock(runtime->GetMapLock());
DEBUG_TrackScopeTraversal();
for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext) {
if (obj == cur->GetGlobalJSObject()) {
found = cur;
break;
}
}
}
if (found) {
// This cannot be called within the map lock!
DEBUG_CheckForComponentsInScope(cx, obj, startingObj,
OKIfNotInitialized, runtime);
return found;
}
// Failure to find the scope is only OK if the caller told us it might fail.
// This flag would only be set in the call from
// XPCWrappedNativeScope::GetNewOrUsed
NS_ASSERTION(OKIfNotInitialized, "No scope has this global object!");
return nsnull;
}
JSBool
XPC_XOW_WrapObject(JSContext *cx, JSObject *parent, jsval *vp,
XPCWrappedNative* wn)
{
NS_ASSERTION(XPCPerThreadData::IsMainThread(cx),
"Can't do this off the main thread!");
// Our argument should be a wrapped native object, but the caller may have
// passed it in as an optimization.
JSObject *wrappedObj;
if (!JSVAL_IS_OBJECT(*vp) ||
!(wrappedObj = JSVAL_TO_OBJECT(*vp)) ||
STOBJ_GET_CLASS(wrappedObj) == &sXPC_XOW_JSClass.base) {
return JS_TRUE;
}
if (!wn &&
!(wn = XPCWrappedNative::GetAndMorphWrappedNativeOfJSObject(cx, wrappedObj))) {
return JS_TRUE;
}
XPCJSRuntime *rt = nsXPConnect::GetRuntimeInstance();
// The parent must be the inner global object for its scope.
parent = JS_GetGlobalForObject(cx, parent);
JSClass *clasp = STOBJ_GET_CLASS(parent);
if (clasp->flags & JSCLASS_IS_EXTENDED) {
JSExtendedClass *xclasp = reinterpret_cast<JSExtendedClass *>(clasp);
if (xclasp->innerObject) {
parent = xclasp->innerObject(cx, parent);
if (!parent) {
return JS_FALSE;
}
}
}
XPCWrappedNativeScope *parentScope =
XPCWrappedNativeScope::FindInJSObjectScope(cx, parent, nsnull, rt);
#ifdef DEBUG_mrbkap_off
printf("Wrapping object at %p (%s) [%p]\n",
(void *)wrappedObj, STOBJ_GET_CLASS(wrappedObj)->name,
(void *)parentScope);
#endif
JSObject *outerObj = nsnull;
WrappedNative2WrapperMap *map = parentScope->GetWrapperMap();
outerObj = map->Find(wrappedObj);
if (outerObj) {
NS_ASSERTION(STOBJ_GET_CLASS(outerObj) == &sXPC_XOW_JSClass.base,
"What crazy object are we getting here?");
#ifdef DEBUG_mrbkap_off
printf("But found a wrapper in the map %p!\n", (void *)outerObj);
#endif
*vp = OBJECT_TO_JSVAL(outerObj);
return JS_TRUE;
}
outerObj = JS_NewObjectWithGivenProto(cx, &sXPC_XOW_JSClass.base, nsnull,
parent);
if (!outerObj) {
return JS_FALSE;
}
if (!JS_SetReservedSlot(cx, outerObj, XPCWrapper::sWrappedObjSlot, *vp) ||
!JS_SetReservedSlot(cx, outerObj, XPCWrapper::sFlagsSlot,
JSVAL_ZERO) ||
!JS_SetReservedSlot(cx, outerObj, XPC_XOW_ScopeSlot,
PRIVATE_TO_JSVAL(parentScope))) {
return JS_FALSE;
}
*vp = OBJECT_TO_JSVAL(outerObj);
map->Add(wn->GetScope()->GetWrapperMap(), wrappedObj, outerObj);
return JS_TRUE;
}
JSBool
WrapObject(JSContext *cx, JSObject *parent, jsval *vp, XPCWrappedNative* wn)
{
NS_ASSERTION(XPCPerThreadData::IsMainThread(cx),
"Can't do this off the main thread!");
// Our argument should be a wrapped native object, but the caller may have
// passed it in as an optimization.
JSObject *wrappedObj;
if (JSVAL_IS_PRIMITIVE(*vp) ||
!(wrappedObj = JSVAL_TO_OBJECT(*vp)) ||
wrappedObj->getClass() == &XOWClass) {
return JS_TRUE;
}
if (!wn &&
!(wn = XPCWrappedNative::GetAndMorphWrappedNativeOfJSObject(cx, wrappedObj))) {
return JS_TRUE;
}
CheckWindow(wn);
// The parent must be the inner global object for its scope.
parent = JS_GetGlobalForObject(cx, parent);
OBJ_TO_INNER_OBJECT(cx, parent);
if (!parent) {
return JS_FALSE;
}
XPCWrappedNativeWithXOW *wnxow = nsnull;
if (wn->NeedsXOW()) {
JSObject *innerWrappedObj = wrappedObj;
OBJ_TO_INNER_OBJECT(cx, innerWrappedObj);
if (!innerWrappedObj) {
return JS_FALSE;
}
if (innerWrappedObj == parent) {
wnxow = static_cast<XPCWrappedNativeWithXOW *>(wn);
JSObject *xow = wnxow->GetXOW();
if (xow) {
*vp = OBJECT_TO_JSVAL(xow);
return JS_TRUE;
}
}
}
XPCWrappedNative *parentwn =
XPCWrappedNative::GetWrappedNativeOfJSObject(cx, parent);
XPCWrappedNativeScope *parentScope;
if (NS_LIKELY(parentwn)) {
parentScope = parentwn->GetScope();
} else {
parentScope = XPCWrappedNativeScope::FindInJSObjectScope(cx, parent);
}
JSObject *outerObj = nsnull;
WrappedNative2WrapperMap *map = parentScope->GetWrapperMap();
outerObj = map->Find(wrappedObj);
if (outerObj) {
NS_ASSERTION(outerObj->getClass() == &XOWClass,
"What crazy object are we getting here?");
*vp = OBJECT_TO_JSVAL(outerObj);
if (wnxow) {
// NB: wnxow->GetXOW() must have returned false.
SetFlags(cx, outerObj, AddFlags(GetFlags(cx, outerObj), FLAG_IS_CACHED));
wnxow->SetXOW(outerObj);
}
return JS_TRUE;
}
outerObj = JS_NewObjectWithGivenProto(cx, js::Jsvalify(&XOWClass), nsnull,
parent);
if (!outerObj) {
return JS_FALSE;
}
jsval flags = INT_TO_JSVAL(wnxow ? FLAG_IS_CACHED : 0);
if (!JS_SetReservedSlot(cx, outerObj, sWrappedObjSlot, *vp) ||
!JS_SetReservedSlot(cx, outerObj, sFlagsSlot, flags) ||
!JS_SetReservedSlot(cx, outerObj, XPC_XOW_ScopeSlot,
PRIVATE_TO_JSVAL(parentScope))) {
return JS_FALSE;
}
*vp = OBJECT_TO_JSVAL(outerObj);
map->Add(wn->GetScope()->GetWrapperMap(), wrappedObj, outerObj);
if(wnxow) {
wnxow->SetXOW(outerObj);
}
return JS_TRUE;
}