bool
XPCWrappedNativeScope::GetComponentsJSObject(JS::MutableHandleObject obj)
{
AutoJSContext cx;
if (!mComponents) {
nsIPrincipal *p = GetPrincipal();
bool system = nsXPConnect::SecurityManager()->IsSystemPrincipal(p);
mComponents = system ? new nsXPCComponents(this)
: new nsXPCComponentsBase(this);
}
RootedValue val(cx);
xpcObjectHelper helper(mComponents);
bool ok = XPCConvert::NativeInterface2JSObject(&val, nullptr, helper,
nullptr, nullptr, false,
nullptr);
if (NS_WARN_IF(!ok))
return false;
if (NS_WARN_IF(!val.isObject()))
return false;
// The call to wrap() here is necessary even though the object is same-
// compartment, because it applies our security wrapper.
obj.set(&val.toObject());
if (NS_WARN_IF(!JS_WrapObject(cx, obj)))
return false;
return true;
}
static bool
env_resolve(JSContext *cx, HandleObject obj, HandleId id, unsigned flags,
JS::MutableHandleObject objp)
{
JSString *idstr, *valstr;
RootedValue idval(cx);
if (!JS_IdToValue(cx, id, idval.address()))
return false;
idstr = ToString(cx, idval);
if (!idstr)
return false;
JSAutoByteString name(cx, idstr);
if (!name)
return false;
const char *value = getenv(name.ptr());
if (value) {
valstr = JS_NewStringCopyZ(cx, value);
if (!valstr)
return false;
if (!JS_DefinePropertyById(cx, obj, id, STRING_TO_JSVAL(valstr),
nullptr, nullptr, JSPROP_ENUMERATE)) {
return false;
}
objp.set(obj);
}
return true;
}
bool
FilteringWrapper<Base, Policy>::getPrototypeOf(JSContext* cx, JS::HandleObject wrapper,
JS::MutableHandleObject protop) const
{
// Filtering wrappers do not allow access to the prototype.
protop.set(nullptr);
return true;
}
bool
CrossOriginXrayWrapper::getPrototypeOf(JSContext *cx, JS::HandleObject wrapper,
JS::MutableHandleObject protop) const
{
// Cross-origin objects have null prototypes.
protop.set(nullptr);
return true;
}
static void
PreWrap(JSContext* cx, JS::HandleObject scope, JS::HandleObject obj,
JS::HandleObject objectPassedToWrap,
JS::MutableHandleObject retObj)
{
JS_GC(cx);
retObj.set(obj);
}
static JSBool
fundamental_instance_new_resolve_interface(JSContext *context,
JS::HandleObject obj,
JS::MutableHandleObject objp,
Fundamental *proto_priv,
char *name)
{
GIFunctionInfo *method_info;
JSBool ret;
GType *interfaces;
guint n_interfaces;
guint i;
ret = JS_TRUE;
interfaces = g_type_interfaces(proto_priv->gtype, &n_interfaces);
for (i = 0; i < n_interfaces; i++) {
GIBaseInfo *base_info;
GIInterfaceInfo *iface_info;
base_info = g_irepository_find_by_gtype(g_irepository_get_default(),
interfaces[i]);
if (base_info == NULL)
continue;
/* An interface GType ought to have interface introspection info */
g_assert(g_base_info_get_type(base_info) == GI_INFO_TYPE_INTERFACE);
iface_info = (GIInterfaceInfo *) base_info;
method_info = g_interface_info_find_method(iface_info, name);
g_base_info_unref(base_info);
if (method_info != NULL) {
if (g_function_info_get_flags (method_info) & GI_FUNCTION_IS_METHOD) {
if (gjs_define_function(context, obj,
proto_priv->gtype,
(GICallableInfo *) method_info)) {
objp.set(obj);
} else {
ret = JS_FALSE;
}
}
g_base_info_unref((GIBaseInfo *) method_info);
}
}
g_free(interfaces);
return ret;
}
static bool
interface_new_resolve(JSContext *context,
JS::HandleObject obj,
JS::HandleId id,
JS::MutableHandleObject objp)
{
Interface *priv;
char *name;
bool ret = false;
GIFunctionInfo *method_info;
if (!gjs_get_string_id(context, id, &name))
return true;
priv = priv_from_js(context, obj);
if (priv == NULL)
goto out;
/* If we have no GIRepository information then this interface was defined
* from within GJS. In that case, it has no properties that need to be
* resolved from within C code, as interfaces cannot inherit. */
if (priv->info == NULL) {
ret = true;
goto out;
}
method_info = g_interface_info_find_method((GIInterfaceInfo*) priv->info, name);
if (method_info != NULL) {
if (g_function_info_get_flags (method_info) & GI_FUNCTION_IS_METHOD) {
if (gjs_define_function(context, obj,
priv->gtype,
(GICallableInfo*)method_info) == NULL) {
g_base_info_unref((GIBaseInfo*)method_info);
goto out;
}
objp.set(obj);
}
g_base_info_unref((GIBaseInfo*)method_info);
}
ret = true;
out:
g_free (name);
return ret;
}
bool
JavaScriptShared::Unwrap(JSContext *cx, const InfallibleTArray<CpowEntry> &aCpows,
JS::MutableHandleObject objp)
{
objp.set(nullptr);
if (!aCpows.Length())
return true;
RootedObject obj(cx, JS_NewObject(cx, nullptr, JS::NullPtr(), JS::NullPtr()));
if (!obj)
return false;
RootedValue v(cx);
RootedString str(cx);
for (size_t i = 0; i < aCpows.Length(); i++) {
const nsString &name = aCpows[i].name();
if (!toValue(cx, aCpows[i].value(), &v))
return false;
if (!JS_DefineUCProperty(cx,
obj,
name.BeginReading(),
name.Length(),
v,
nullptr,
nullptr,
JSPROP_ENUMERATE))
{
return false;
}
}
objp.set(obj);
return true;
}
bool ScriptInterface::GetProperty(JS::HandleValue obj, const char* name, JS::MutableHandleObject out)
{
JSContext* cx = GetContext();
JSAutoRequest rq(cx);
JS::RootedValue val(cx);
if (!GetProperty_(obj, name, &val))
return false;
if (!val.isObject())
{
LOGERROR("GetProperty failed: trying to get an object, but the property is not an object!");
return false;
}
out.set(&val.toObject());
return true;
}
/*
* Like JSResolveOp, but flags provide contextual information as follows:
*
* JSRESOLVE_QUALIFIED a qualified property id: obj.id or obj[id], not id
* JSRESOLVE_ASSIGNING obj[id] is on the left-hand side of an assignment
* JSRESOLVE_DETECTING 'if (o.p)...' or similar detection opcode sequence
* JSRESOLVE_DECLARING var, const, or function prolog declaration opcode
* JSRESOLVE_CLASSNAME class name used when constructing
*
* The *objp out parameter, on success, should be null to indicate that id
* was not resolved; and non-null, referring to obj or one of its prototypes,
* if id was resolved.
*/
static JSBool
importer_new_resolve(JSContext *context,
JS::HandleObject obj,
JS::HandleId id,
unsigned flags,
JS::MutableHandleObject objp)
{
Importer *priv;
std::string name;
JSBool ret = JS_TRUE;
jsid module_init_name;
module_init_name = gjs_context_get_const_string(context, GJS_STRING_MODULE_INIT);
if (id == module_init_name)
return JS_TRUE;
if (!gjs_get_string_id(context, id, name))
return JS_FALSE;
/* let Object.prototype resolve these */
if (name == "valueOf" ||
name == "toString" ||
name == "__iterator__")
goto out;
priv = priv_from_js(context, obj);
// std::cout << "Resolve prop '" << name << "' hook obj " << (uint32_t)*obj << " priv " << (uint32_t)priv << "\n";
if (priv == NULL) /* we are the prototype, or have the wrong class */
goto out;
JS_BeginRequest(context);
if (do_import(context, obj, priv, name)) {
objp.set(obj);
} else {
ret = JS_FALSE;
}
JS_EndRequest(context);
out:
return ret;
}
bool
StructuredCloneHelper::ReadTransferCallback(JSContext* aCx,
JSStructuredCloneReader* aReader,
uint32_t aTag,
void* aContent,
uint64_t aExtraData,
JS::MutableHandleObject aReturnObject)
{
MOZ_ASSERT(mSupportsTransferring);
if (aTag == SCTAG_DOM_MAP_MESSAGEPORT) {
// This can be null.
nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(mParent);
MOZ_ASSERT(aExtraData < mPortIdentifiers.Length());
const MessagePortIdentifier& portIdentifier = mPortIdentifiers[aExtraData];
// aExtraData is the index of this port identifier.
ErrorResult rv;
nsRefPtr<MessagePort> port =
MessagePort::Create(window, portIdentifier, rv);
if (NS_WARN_IF(rv.Failed())) {
return false;
}
mTransferredPorts.AppendElement(port);
JS::Rooted<JS::Value> value(aCx);
if (!GetOrCreateDOMReflector(aCx, port, &value)) {
JS_ClearPendingException(aCx);
return false;
}
aReturnObject.set(&value.toObject());
return true;
}
return false;
}
void getJsObjOrCreat(JSContext* cx, JS::HandleObject jsObj, const char* name, JS::MutableHandleObject retObj) {
JS::RootedObject parent(cx);
JS::RootedObject tempObj(cx);
bool first = true;
std::stringstream ss(name);
std::string sub;
const char* subChar;
while(getline(ss, sub, '.')) {
if(sub.empty())continue;
subChar = sub.c_str();
if (first) {
get_or_create_js_obj(cx, jsObj, subChar, &tempObj);
first = false;
} else {
parent = tempObj;
get_or_create_js_obj(cx, parent, subChar, &tempObj);
}
}
retObj.set(tempObj.get());
}
/*
* Like JSResolveOp, but flags provide contextual information as follows:
*
* JSRESOLVE_QUALIFIED a qualified property id: obj.id or obj[id], not id
* JSRESOLVE_ASSIGNING obj[id] is on the left-hand side of an assignment
* JSRESOLVE_DETECTING 'if (o.p)...' or similar detection opcode sequence
* JSRESOLVE_DECLARING var, const, or fundamental prolog declaration opcode
* JSRESOLVE_CLASSNAME class name used when constructing
*
* The *objp out parameter, on success, should be null to indicate that id
* was not resolved; and non-null, referring to obj or one of its prototypes,
* if id was resolved.
*/
static JSBool
fundamental_instance_new_resolve(JSContext *context,
JS::HandleObject obj,
JS::HandleId id,
unsigned flags,
JS::MutableHandleObject objp)
{
FundamentalInstance *priv;
char *name;
JSBool ret = JS_FALSE;
if (!gjs_get_string_id(context, id, &name))
return JS_TRUE; /* not resolved, but no error */
priv = priv_from_js(context, obj);
gjs_debug_jsprop(GJS_DEBUG_GFUNDAMENTAL, "Resolve prop '%s' hook obj %p priv %p", name, *obj, priv);
if (priv == NULL)
goto out; /* wrong class */
if (priv->prototype == NULL) {
/* We are the prototype, so look for methods and other class properties */
Fundamental *proto_priv = (Fundamental *) priv;
GIFunctionInfo *method_info;
method_info = g_object_info_find_method((GIStructInfo*) proto_priv->info,
name);
if (method_info != NULL) {
const char *method_name;
#if GJS_VERBOSE_ENABLE_GI_USAGE
_gjs_log_info_usage((GIBaseInfo *) method_info);
#endif
if (g_function_info_get_flags (method_info) & GI_FUNCTION_IS_METHOD) {
method_name = g_base_info_get_name((GIBaseInfo *) method_info);
/* we do not define deprecated methods in the prototype */
if (g_base_info_is_deprecated((GIBaseInfo *) method_info)) {
gjs_debug(GJS_DEBUG_GFUNDAMENTAL,
"Ignoring definition of deprecated method %s in prototype %s.%s",
method_name,
g_base_info_get_namespace((GIBaseInfo *) proto_priv->info),
g_base_info_get_name((GIBaseInfo *) proto_priv->info));
g_base_info_unref((GIBaseInfo *) method_info);
ret = JS_TRUE;
goto out;
}
gjs_debug(GJS_DEBUG_GFUNDAMENTAL,
"Defining method %s in prototype for %s.%s",
method_name,
g_base_info_get_namespace((GIBaseInfo *) proto_priv->info),
g_base_info_get_name((GIBaseInfo *) proto_priv->info));
if (gjs_define_function(context, obj, proto_priv->gtype,
method_info) == NULL) {
g_base_info_unref((GIBaseInfo *) method_info);
goto out;
}
objp.set(obj);
}
g_base_info_unref((GIBaseInfo *) method_info);
}
ret = fundamental_instance_new_resolve_interface(context, obj, objp,
proto_priv, name);
} else {
/* We are an instance, not a prototype, so look for
* per-instance props that we want to define on the
* JSObject. Generally we do not want to cache these in JS, we
* want to always pull them from the C object, or JS would not
* see any changes made from C. So we use the get/set prop
* hooks, not this resolve hook.
*/
}
ret = JS_TRUE;
out:
g_free(name);
return ret;
}
void CStdDeserializer::GetScriptBackref(u32 tag, JS::MutableHandleObject ret)
{
ENSURE(m_ScriptBackrefs.size() > tag);
ret.set(m_ScriptBackrefs[tag]);
}
/*
* Like JSResolveOp, but flags provide contextual information as follows:
*
* JSRESOLVE_QUALIFIED a qualified property id: obj.id or obj[id], not id
* JSRESOLVE_ASSIGNING obj[id] is on the left-hand side of an assignment
* JSRESOLVE_DETECTING 'if (o.p)...' or similar detection opcode sequence
* JSRESOLVE_DECLARING var, const, or boxed prolog declaration opcode
* JSRESOLVE_CLASSNAME class name used when constructing
*
* The *objp out parameter, on success, should be null to indicate that id
* was not resolved; and non-null, referring to obj or one of its prototypes,
* if id was resolved.
*/
static JSBool
union_new_resolve(JSContext *context,
JS::HandleObject obj,
JS::HandleId id,
unsigned flags,
JS::MutableHandleObject objp)
{
Union *priv;
char *name;
JSBool ret = JS_TRUE;
if (!gjs_get_string_id(context, id, &name))
return JS_TRUE; /* not resolved, but no error */
priv = priv_from_js(context, obj);
gjs_debug_jsprop(GJS_DEBUG_GBOXED, "Resolve prop '%s' hook obj %p priv %p", name, *obj, priv);
if (priv == NULL) {
ret = JS_FALSE; /* wrong class */
goto out;
}
if (priv->gboxed == NULL) {
/* We are the prototype, so look for methods and other class properties */
GIFunctionInfo *method_info;
method_info = g_union_info_find_method((GIUnionInfo*) priv->info,
name);
if (method_info != NULL) {
JSObject *union_proto;
const char *method_name;
#if GJS_VERBOSE_ENABLE_GI_USAGE
_gjs_log_info_usage((GIBaseInfo*) method_info);
#endif
if (g_function_info_get_flags (method_info) & GI_FUNCTION_IS_METHOD) {
method_name = g_base_info_get_name( (GIBaseInfo*) method_info);
gjs_debug(GJS_DEBUG_GBOXED,
"Defining method %s in prototype for %s.%s",
method_name,
g_base_info_get_namespace( (GIBaseInfo*) priv->info),
g_base_info_get_name( (GIBaseInfo*) priv->info));
union_proto = obj;
if (gjs_define_function(context, union_proto,
g_registered_type_info_get_g_type(priv->info),
method_info) == NULL) {
g_base_info_unref( (GIBaseInfo*) method_info);
ret = JS_FALSE;
goto out;
}
objp.set(union_proto); /* we defined the prop in object_proto */
}
g_base_info_unref( (GIBaseInfo*) method_info);
}
} else {
/* We are an instance, not a prototype, so look for
* per-instance props that we want to define on the
* JSObject. Generally we do not want to cache these in JS, we
* want to always pull them from the C object, or JS would not
* see any changes made from C. So we use the get/set prop
* hooks, not this resolve hook.
*/
}
out:
g_free(name);
return ret;
}
/*
* Like JSResolveOp, but flags provide contextual information as follows:
*
* JSRESOLVE_QUALIFIED a qualified property id: obj.id or obj[id], not id
* JSRESOLVE_ASSIGNING obj[id] is on the left-hand side of an assignment
* JSRESOLVE_DETECTING 'if (o.p)...' or similar detection opcode sequence
* JSRESOLVE_DECLARING var, const, or function prolog declaration opcode
* JSRESOLVE_CLASSNAME class name used when constructing
*
* The *objp out parameter, on success, should be null to indicate that id
* was not resolved; and non-null, referring to obj or one of its prototypes,
* if id was resolved.
*/
static JSBool
ns_new_resolve(JSContext *context,
JS::HandleObject obj,
JS::HandleId id,
unsigned flags,
JS::MutableHandleObject objp)
{
Ns *priv;
char *name;
GIRepository *repo;
GIBaseInfo *info;
JSBool ret = JS_FALSE;
gboolean defined;
if (!gjs_get_string_id(context, id, &name))
return JS_TRUE; /* not resolved, but no error */
/* let Object.prototype resolve these */
if (strcmp(name, "valueOf") == 0 ||
strcmp(name, "toString") == 0) {
ret = JS_TRUE;
goto out;
}
priv = priv_from_js(context, obj);
gjs_debug_jsprop(GJS_DEBUG_GNAMESPACE, "Resolve prop '%s' hook obj %p priv %p", name, *obj, priv);
if (priv == NULL) {
ret = JS_TRUE; /* we are the prototype, or have the wrong class */
goto out;
}
JS_BeginRequest(context);
repo = g_irepository_get_default();
info = g_irepository_find_by_name(repo, priv->gi_namespace, name);
if (info == NULL) {
/* No property defined, but no error either, so return TRUE */
JS_EndRequest(context);
ret = JS_TRUE;
goto out;
}
gjs_debug(GJS_DEBUG_GNAMESPACE,
"Found info type %s for '%s' in namespace '%s'",
gjs_info_type_name(g_base_info_get_type(info)),
g_base_info_get_name(info),
g_base_info_get_namespace(info));
if (gjs_define_info(context, obj, info, &defined)) {
g_base_info_unref(info);
if (defined)
objp.set(obj); /* we defined the property in this object */
ret = JS_TRUE;
} else {
gjs_debug(GJS_DEBUG_GNAMESPACE,
"Failed to define info '%s'",
g_base_info_get_name(info));
g_base_info_unref(info);
}
JS_EndRequest(context);
out:
g_free(name);
return ret;
}