bool ScriptInterface::SetPrototype(JS::HandleValue objVal, JS::HandleValue protoVal)
{
JSAutoRequest rq(m->m_cx);
if (!objVal.isObject() || !protoVal.isObject())
return false;
JS::RootedObject obj(m->m_cx, &objVal.toObject());
JS::RootedObject proto(m->m_cx, &protoVal.toObject());
return JS_SetPrototype(m->m_cx, obj, proto);
}
template<typename T> static bool FromJSVal_vector(JSContext* cx, JS::HandleValue v, std::vector<T>& out)
{
JSAutoRequest rq(cx);
JS::RootedObject obj(cx);
if (!v.isObject())
FAIL("Argument must be an array");
obj = &v.toObject();
if (!(JS_IsArrayObject(cx, obj) || JS_IsTypedArrayObject(obj)))
FAIL("Argument must be an array");
u32 length;
if (!JS_GetArrayLength(cx, obj, &length))
FAIL("Failed to get array length");
out.reserve(length);
for (u32 i = 0; i < length; ++i)
{
JS::RootedValue el(cx);
if (!JS_GetElement(cx, obj, i, &el))
FAIL("Failed to read array element");
T el2;
if (!ScriptInterface::FromJSVal<T>(cx, el, el2))
return false;
out.push_back(el2);
}
return true;
}
template<> bool ScriptInterface::FromJSVal<Entity>(JSContext* cx, JS::HandleValue v, Entity& out)
{
JSAutoRequest rq(cx);
if (!v.isObject())
FAIL("Argument must be an object");
JS::RootedObject obj(cx, &v.toObject());
JS::RootedValue templateName(cx);
JS::RootedValue id(cx);
JS::RootedValue player(cx);
JS::RootedValue position(cx);
JS::RootedValue rotation(cx);
// TODO: Report type errors
if (!JS_GetProperty(cx, obj, "player", &player) || !FromJSVal(cx, player, out.playerID))
FAIL("Failed to read Entity.player property");
if (!JS_GetProperty(cx, obj, "templateName", &templateName) || !FromJSVal(cx, templateName, out.templateName))
FAIL("Failed to read Entity.templateName property");
if (!JS_GetProperty(cx, obj, "id", &id) || !FromJSVal(cx, id, out.entityID))
FAIL("Failed to read Entity.id property");
if (!JS_GetProperty(cx, obj, "position", &position) || !FromJSVal(cx, position, out.position))
FAIL("Failed to read Entity.position property");
if (!JS_GetProperty(cx, obj, "rotation", &rotation) || !FromJSVal(cx, rotation, out.rotation))
FAIL("Failed to read Entity.rotation property");
return true;
}
NS_IMETHODIMP nsAndroidBridge::HandleGeckoMessage(JS::HandleValue val,
JSContext *cx)
{
if (val.isObject()) {
JS::RootedObject object(cx, &val.toObject());
AndroidBridge::Bridge()->HandleGeckoMessage(cx, object);
return NS_OK;
}
// Now handle legacy JSON messages.
if (!val.isString()) {
return NS_ERROR_INVALID_ARG;
}
JS::RootedString jsonStr(cx, val.toString());
JS::RootedValue jsonVal(cx);
if (!JS_ParseJSON(cx, jsonStr, &jsonVal) || !jsonVal.isObject()) {
return NS_ERROR_INVALID_ARG;
}
// Spit out a warning before sending the message.
nsContentUtils::ReportToConsoleNonLocalized(
NS_LITERAL_STRING("Use of JSON is deprecated. "
"Please pass Javascript objects directly to handleGeckoMessage."),
nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("nsIAndroidBridge"),
nullptr);
JS::RootedObject object(cx, &jsonVal.toObject());
AndroidBridge::Bridge()->HandleGeckoMessage(cx, object);
return NS_OK;
}
NS_IMETHODIMP
calDateTime::SetJsDate(JSContext* aCx, JS::HandleValue aDate)
{
if (!aDate.isObject()) {
mIsValid = false;
return NS_OK;
}
JS::Rooted<JSObject*> dobj(aCx, &aDate.toObject());
dobj = js::CheckedUnwrap(dobj);
if (!dobj) {
mIsValid = false;
return NS_OK;
}
JSAutoCompartment ac(aCx, dobj);
if (!JS_ObjectIsDate(aCx, dobj) || !js_DateIsValid(dobj)) {
mIsValid = false;
return NS_OK;
}
PRTime utcTime = PRTime(js_DateGetMsecSinceEpoch(dobj)) * 1000;
mIsValid = NS_SUCCEEDED(SetNativeTime(utcTime));
return NS_OK;
}
bool ScriptInterface::EnumeratePropertyNamesWithPrefix(JS::HandleValue objVal, const char* prefix, std::vector<std::string>& out)
{
JSAutoRequest rq(m->m_cx);
if (!objVal.isObjectOrNull())
{
LOGERROR("EnumeratePropertyNamesWithPrefix expected object type!");
return false;
}
if(objVal.isNull())
return true; // reached the end of the prototype chain
JS::RootedObject obj(m->m_cx, &objVal.toObject());
JS::RootedObject it(m->m_cx, JS_NewPropertyIterator(m->m_cx, obj));
if (!it)
return false;
while (true)
{
JS::RootedId idp(m->m_cx);
JS::RootedValue val(m->m_cx);
if (! JS_NextProperty(m->m_cx, it, idp.address()) || ! JS_IdToValue(m->m_cx, idp, &val))
return false;
if (val.isUndefined())
break; // end of iteration
if (!val.isString())
continue; // ignore integer properties
JS::RootedString name(m->m_cx, val.toString());
size_t len = strlen(prefix)+1;
std::vector<char> buf(len);
size_t prefixLen = strlen(prefix) * sizeof(char);
JS_EncodeStringToBuffer(m->m_cx, name, &buf[0], prefixLen);
buf[len-1]= '\0';
if(0 == strcmp(&buf[0], prefix))
{
size_t len;
const jschar* chars = JS_GetStringCharsAndLength(m->m_cx, name, &len);
out.push_back(std::string(chars, chars+len));
}
}
// Recurse up the prototype chain
JS::RootedObject prototype(m->m_cx);
if (JS_GetPrototype(m->m_cx, obj, &prototype))
{
JS::RootedValue prototypeVal(m->m_cx, JS::ObjectOrNullValue(prototype));
if (! EnumeratePropertyNamesWithPrefix(prototypeVal, prefix, out))
return false;
}
return true;
}
bool ScriptInterface::GetProperty_(JS::HandleValue obj, const char* name, JS::MutableHandleValue out)
{
JSAutoRequest rq(m->m_cx);
if (!obj.isObject())
return false;
JS::RootedObject object(m->m_cx, &obj.toObject());
if (!JS_GetProperty(m->m_cx, object, name, out))
return false;
return true;
}
void CStdDeserializer::ScriptObjectAppend(const char* name, JS::HandleValue objVal)
{
JSContext* cx = m_ScriptInterface.GetContext();
JSAutoRequest rq(cx);
if (!objVal.isObject())
throw PSERROR_Deserialize_ScriptError();
JS::RootedObject obj(cx, &objVal.toObject());
ReadScriptVal(name, obj);
}
bool ScriptInterface::GetPropertyInt_(JS::HandleValue obj, int name, JS::MutableHandleValue out)
{
JSAutoRequest rq(m->m_cx);
JS::RootedId nameId(m->m_cx, INT_TO_JSID(name));
if (!obj.isObject())
return false;
JS::RootedObject object(m->m_cx, &obj.toObject());
if (!JS_GetPropertyById(m->m_cx, object, nameId, out))
return false;
return true;
}
bool ScriptInterface::HasProperty(JS::HandleValue obj, const char* name)
{
// TODO: proper errorhandling
JSAutoRequest rq(m->m_cx);
if (!obj.isObject())
return false;
JS::RootedObject object(m->m_cx, &obj.toObject());
bool found;
if (!JS_HasProperty(m->m_cx, object, name, &found))
return false;
return found;
}
void ScriptInterface::CallConstructor(JS::HandleValue ctor, JS::HandleValueArray argv, JS::MutableHandleValue out)
{
JSAutoRequest rq(m->m_cx);
if (!ctor.isObject())
{
LOGERROR("CallConstructor: ctor is not an object");
out.setNull();
return;
}
JS::RootedObject ctorObj(m->m_cx, &ctor.toObject());
out.setObjectOrNull(JS_New(m->m_cx, ctorObj, argv));
}
bool ScriptInterface::FreezeObject(JS::HandleValue objVal, bool deep)
{
JSAutoRequest rq(m->m_cx);
if (!objVal.isObject())
return false;
JS::RootedObject obj(m->m_cx, &objVal.toObject());
if (deep)
return JS_DeepFreezeObject(m->m_cx, obj);
else
return JS_FreezeObject(m->m_cx, obj);
}
nsresult TranslateChoices(
JS::HandleValue aChoices,
const nsTArray<PermissionRequest>& aPermissionRequests,
nsTArray<PermissionChoice>& aTranslatedChoices) {
if (aChoices.isNullOrUndefined()) {
// No choice is specified.
} else if (aChoices.isObject()) {
// Iterate through all permission types.
for (uint32_t i = 0; i < aPermissionRequests.Length(); ++i) {
nsCString type = aPermissionRequests[i].type();
JS::Rooted<JSObject*> obj(RootingCx(), &aChoices.toObject());
// People really shouldn't be passing WindowProxy or Location
// objects for the choices here.
obj = js::CheckedUnwrapStatic(obj);
if (!obj) {
return NS_ERROR_FAILURE;
}
AutoJSAPI jsapi;
jsapi.Init();
JSContext* cx = jsapi.cx();
JSAutoRealm ar(cx, obj);
JS::Rooted<JS::Value> val(cx);
if (!JS_GetProperty(cx, obj, type.BeginReading(), &val) ||
!val.isString()) {
// no setting for the permission type, clear exception and skip it
jsapi.ClearException();
} else {
nsAutoJSString choice;
if (!choice.init(cx, val)) {
jsapi.ClearException();
return NS_ERROR_FAILURE;
}
aTranslatedChoices.AppendElement(PermissionChoice(type, choice));
}
}
} else {
MOZ_ASSERT(false, "SelectedChoices should be undefined or an JS object");
return NS_ERROR_FAILURE;
}
return NS_OK;
}
bool ScriptInterface::SetPropertyInt_(JS::HandleValue obj, int name, JS::HandleValue value, bool constant, bool enumerate)
{
JSAutoRequest rq(m->m_cx);
uint attrs = 0;
if (constant)
attrs |= JSPROP_READONLY | JSPROP_PERMANENT;
if (enumerate)
attrs |= JSPROP_ENUMERATE;
if (!obj.isObject())
return false;
JS::RootedObject object(m->m_cx, &obj.toObject());
if (! JS_DefinePropertyById(m->m_cx, object, INT_TO_JSID(name), value, NULL, NULL, attrs))
return false;
return true;
}
template<> bool ScriptInterface::FromJSVal<CFixedVector2D>(JSContext* cx, JS::HandleValue v, CFixedVector2D& out)
{
JSAutoRequest rq(cx);
if (!v.isObject())
return false; // TODO: report type error
JS::RootedObject obj(cx, &v.toObject());
JS::RootedValue p(cx);
if (!JS_GetProperty(cx, obj, "x", &p)) return false; // TODO: report type errors
if (!FromJSVal(cx, p, out.X)) return false;
if (!JS_GetProperty(cx, obj, "y", &p)) return false;
if (!FromJSVal(cx, p, out.Y)) return false;
return true;
}
bool ScriptInterface::SetProperty_(JS::HandleValue obj, const wchar_t* name, JS::HandleValue value, bool constant, bool enumerate)
{
JSAutoRequest rq(m->m_cx);
uint attrs = 0;
if (constant)
attrs |= JSPROP_READONLY | JSPROP_PERMANENT;
if (enumerate)
attrs |= JSPROP_ENUMERATE;
if (!obj.isObject())
return false;
JS::RootedObject object(m->m_cx, &obj.toObject());
utf16string name16(name, name + wcslen(name));
if (! JS_DefineUCProperty(m->m_cx, object, reinterpret_cast<const jschar*>(name16.c_str()), name16.length(), value, NULL, NULL, attrs))
return false;
return true;
}
NS_IMETHODIMP
MediaPermissionRequest::Allow(JS::HandleValue aChoices)
{
// check if JS object
if (!aChoices.isObject()) {
MOZ_ASSERT(false, "Not a correct format of PermissionChoice");
return NS_ERROR_INVALID_ARG;
}
// iterate through audio-capture and video-capture
AutoSafeJSContext cx;
JS::Rooted<JSObject*> obj(cx, &aChoices.toObject());
JSAutoCompartment ac(cx, obj);
JS::Rooted<JS::Value> v(cx);
// get selected audio device name
nsString audioDevice;
if (mAudio) {
if (!JS_GetProperty(cx, obj, AUDIO_PERMISSION_NAME, &v) || !v.isString()) {
return NS_ERROR_FAILURE;
}
nsAutoJSString deviceName;
if (!deviceName.init(cx, v)) {
MOZ_ASSERT(false, "Couldn't initialize string from aChoices");
return NS_ERROR_FAILURE;
}
audioDevice = deviceName;
}
// get selected video device name
nsString videoDevice;
if (mVideo) {
if (!JS_GetProperty(cx, obj, VIDEO_PERMISSION_NAME, &v) || !v.isString()) {
return NS_ERROR_FAILURE;
}
nsAutoJSString deviceName;
if (!deviceName.init(cx, v)) {
MOZ_ASSERT(false, "Couldn't initialize string from aChoices");
return NS_ERROR_FAILURE;
}
videoDevice = deviceName;
}
return DoAllow(audioDevice, videoDevice);
}
template<> bool ScriptInterface::FromJSVal<CColor>(JSContext* cx, JS::HandleValue v, CColor& out)
{
if (!v.isObject())
FAIL("JS::HandleValue not an object");
JSAutoRequest rq(cx);
JS::RootedObject obj(cx, &v.toObject());
JS::RootedValue r(cx);
JS::RootedValue g(cx);
JS::RootedValue b(cx);
JS::RootedValue a(cx);
if (!JS_GetProperty(cx, obj, "r", &r) || !FromJSVal(cx, r, out.r))
FAIL("Failed to get property CColor.r");
if (!JS_GetProperty(cx, obj, "g", &g) || !FromJSVal(cx, g, out.g))
FAIL("Failed to get property CColor.g");
if (!JS_GetProperty(cx, obj, "b", &b) || !FromJSVal(cx, b, out.b))
FAIL("Failed to get property CColor.b");
if (!JS_GetProperty(cx, obj, "a", &a) || !FromJSVal(cx, a, out.a))
FAIL("Failed to get property CColor.a");
return true;
}
void CBinarySerializerScriptImpl::HandleScriptVal(JS::HandleValue val)
{
JSContext* cx = m_ScriptInterface.GetContext();
JSAutoRequest rq(cx);
switch (JS_TypeOfValue(cx, val))
{
case JSTYPE_VOID:
{
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_VOID);
break;
}
case JSTYPE_NULL: // This type is never actually returned (it's a JS2 feature)
{
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_NULL);
break;
}
case JSTYPE_OBJECT:
{
if (val.isNull())
{
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_NULL);
break;
}
JS::RootedObject obj(cx, &val.toObject());
// If we've already serialized this object, just output a reference to it
u32 tag = GetScriptBackrefTag(obj);
if (tag)
{
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_BACKREF);
m_Serializer.NumberU32_Unbounded("tag", tag);
break;
}
// Arrays are special cases of Object
if (JS_IsArrayObject(cx, obj))
{
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_ARRAY);
// TODO: probably should have a more efficient storage format
// Arrays like [1, 2, ] have an 'undefined' at the end which is part of the
// length but seemingly isn't enumerated, so store the length explicitly
uint length = 0;
if (!JS_GetArrayLength(cx, obj, &length))
throw PSERROR_Serialize_ScriptError("JS_GetArrayLength failed");
m_Serializer.NumberU32_Unbounded("array length", length);
}
else if (JS_IsTypedArrayObject(obj))
{
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_TYPED_ARRAY);
m_Serializer.NumberU8_Unbounded("array type", GetArrayType(JS_GetArrayBufferViewType(obj)));
m_Serializer.NumberU32_Unbounded("byte offset", JS_GetTypedArrayByteOffset(obj));
m_Serializer.NumberU32_Unbounded("length", JS_GetTypedArrayLength(obj));
// Now handle its array buffer
// this may be a backref, since ArrayBuffers can be shared by multiple views
JS::RootedValue bufferVal(cx, JS::ObjectValue(*JS_GetArrayBufferViewBuffer(cx, obj)));
HandleScriptVal(bufferVal);
break;
}
else if (JS_IsArrayBufferObject(obj))
{
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_ARRAY_BUFFER);
#if BYTE_ORDER != LITTLE_ENDIAN
#error TODO: need to convert JS ArrayBuffer data to little-endian
#endif
u32 length = JS_GetArrayBufferByteLength(obj);
m_Serializer.NumberU32_Unbounded("buffer length", length);
JS::AutoCheckCannotGC nogc;
m_Serializer.RawBytes("buffer data", (const u8*)JS_GetArrayBufferData(obj, nogc), length);
break;
}
else
{
// Find type of object
const JSClass* jsclass = JS_GetClass(obj);
if (!jsclass)
throw PSERROR_Serialize_ScriptError("JS_GetClass failed");
// TODO: Remove this workaround for upstream API breakage when updating SpiderMonkey
// See https://bugzilla.mozilla.org/show_bug.cgi?id=1236373
#define JSCLASS_CACHED_PROTO_WIDTH js::JSCLASS_CACHED_PROTO_WIDTH
JSProtoKey protokey = JSCLASS_CACHED_PROTO_KEY(jsclass);
#undef JSCLASS_CACHED_PROTO_WIDTH
if (protokey == JSProto_Object)
{
// Object class - check for user-defined prototype
JS::RootedObject proto(cx);
JS_GetPrototype(cx, obj, &proto);
if (!proto)
throw PSERROR_Serialize_ScriptError("JS_GetPrototype failed");
if (m_SerializablePrototypes->empty() || !IsSerializablePrototype(proto))
{
// Standard Object prototype
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT);
// TODO: maybe we should throw an error for unrecognized non-Object prototypes?
// (requires fixing AI serialization first and excluding component scripts)
}
else
{
// User-defined custom prototype
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT_PROTOTYPE);
const std::wstring prototypeName = GetPrototypeName(proto);
m_Serializer.String("proto name", prototypeName, 0, 256);
// Does it have custom Serialize function?
// if so, we serialize the data it returns, rather than the object's properties directly
bool hasCustomSerialize;
if (!JS_HasProperty(cx, obj, "Serialize", &hasCustomSerialize))
throw PSERROR_Serialize_ScriptError("JS_HasProperty failed");
if (hasCustomSerialize)
{
JS::RootedValue serialize(cx);
if (!JS_GetProperty(cx, obj, "Serialize", &serialize))
throw PSERROR_Serialize_ScriptError("JS_GetProperty failed");
// If serialize is null, so don't serialize anything more
if (!serialize.isNull())
{
JS::RootedValue data(cx);
if (!m_ScriptInterface.CallFunction(val, "Serialize", &data))
throw PSERROR_Serialize_ScriptError("Prototype Serialize function failed");
HandleScriptVal(data);
}
break;
}
}
}
else if (protokey == JSProto_Number)
{
// Standard Number object
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT_NUMBER);
// Get primitive value
double d;
if (!JS::ToNumber(cx, val, &d))
throw PSERROR_Serialize_ScriptError("JS::ToNumber failed");
m_Serializer.NumberDouble_Unbounded("value", d);
break;
}
else if (protokey == JSProto_String)
{
// Standard String object
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT_STRING);
// Get primitive value
JS::RootedString str(cx, JS::ToString(cx, val));
if (!str)
throw PSERROR_Serialize_ScriptError("JS_ValueToString failed");
ScriptString("value", str);
break;
}
else if (protokey == JSProto_Boolean)
{
// Standard Boolean object
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT_BOOLEAN);
// Get primitive value
bool b = JS::ToBoolean(val);
m_Serializer.Bool("value", b);
break;
}
// TODO: Follow upstream progresses about a JS::IsMapObject
// https://bugzilla.mozilla.org/show_bug.cgi?id=1285909
else if (protokey == JSProto_Map)
{
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT_MAP);
m_Serializer.NumberU32_Unbounded("map size", JS::MapSize(cx, obj));
JS::RootedValue keyValueIterator(cx);
if (!JS::MapEntries(cx, obj, &keyValueIterator))
throw PSERROR_Serialize_ScriptError("JS::MapEntries failed");
JS::ForOfIterator it(cx);
if (!it.init(keyValueIterator))
throw PSERROR_Serialize_ScriptError("JS::ForOfIterator::init failed");
JS::RootedValue keyValuePair(cx);
bool done;
while (true)
{
if (!it.next(&keyValuePair, &done))
throw PSERROR_Serialize_ScriptError("JS::ForOfIterator::next failed");
if (done)
break;
JS::RootedObject keyValuePairObj(cx, &keyValuePair.toObject());
JS::RootedValue key(cx);
JS::RootedValue value(cx);
ENSURE(JS_GetElement(cx, keyValuePairObj, 0, &key));
ENSURE(JS_GetElement(cx, keyValuePairObj, 1, &value));
HandleScriptVal(key);
HandleScriptVal(value);
}
break;
}
// TODO: Follow upstream progresses about a JS::IsSetObject
// https://bugzilla.mozilla.org/show_bug.cgi?id=1285909
else if (protokey == JSProto_Set)
{
// TODO: When updating SpiderMonkey to a release after 38 use the C++ API for Sets.
// https://bugzilla.mozilla.org/show_bug.cgi?id=1159469
u32 setSize;
m_ScriptInterface.GetProperty(val, "size", setSize);
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT_SET);
m_Serializer.NumberU32_Unbounded("set size", setSize);
JS::RootedValue valueIterator(cx);
m_ScriptInterface.CallFunction(val, "values", &valueIterator);
for (u32 i=0; i<setSize; ++i)
{
JS::RootedValue currentIterator(cx);
JS::RootedValue value(cx);
ENSURE(m_ScriptInterface.CallFunction(valueIterator, "next", ¤tIterator));
m_ScriptInterface.GetProperty(currentIterator, "value", &value);
HandleScriptVal(value);
}
break;
}
else
{
// Unrecognized class
LOGERROR("Cannot serialise JS objects with unrecognized class '%s'", jsclass->name);
throw PSERROR_Serialize_InvalidScriptValue();
}
}
// Find all properties (ordered by insertion time)
JS::AutoIdArray ida (cx, JS_Enumerate(cx, obj));
if (!ida)
throw PSERROR_Serialize_ScriptError("JS_Enumerate failed");
m_Serializer.NumberU32_Unbounded("num props", (u32)ida.length());
for (size_t i = 0; i < ida.length(); ++i)
{
JS::RootedId id(cx, ida[i]);
JS::RootedValue idval(cx);
JS::RootedValue propval(cx);
// Forbid getters, which might delete values and mess things up.
JS::Rooted<JSPropertyDescriptor> desc(cx);
if (!JS_GetPropertyDescriptorById(cx, obj, id, &desc))
throw PSERROR_Serialize_ScriptError("JS_GetPropertyDescriptorById failed");
if (desc.hasGetterObject())
throw PSERROR_Serialize_ScriptError("Cannot serialize property getters");
// Get the property name as a string
if (!JS_IdToValue(cx, id, &idval))
throw PSERROR_Serialize_ScriptError("JS_IdToValue failed");
JS::RootedString idstr(cx, JS::ToString(cx, idval));
if (!idstr)
throw PSERROR_Serialize_ScriptError("JS_ValueToString failed");
ScriptString("prop name", idstr);
if (!JS_GetPropertyById(cx, obj, id, &propval))
throw PSERROR_Serialize_ScriptError("JS_GetPropertyById failed");
HandleScriptVal(propval);
}
break;
}
case JSTYPE_FUNCTION:
{
// We can't serialise functions, but we can at least name the offender (hopefully)
std::wstring funcname(L"(unnamed)");
JS::RootedFunction func(cx, JS_ValueToFunction(cx, val));
if (func)
{
JS::RootedString string(cx, JS_GetFunctionId(func));
if (string)
{
if (JS_StringHasLatin1Chars(string))
{
size_t length;
JS::AutoCheckCannotGC nogc;
const JS::Latin1Char* ch = JS_GetLatin1StringCharsAndLength(cx, nogc, string, &length);
if (ch && length > 0)
funcname.assign(ch, ch + length);
}
else
{
size_t length;
JS::AutoCheckCannotGC nogc;
const char16_t* ch = JS_GetTwoByteStringCharsAndLength(cx, nogc, string, &length);
if (ch && length > 0)
funcname.assign(ch, ch + length);
}
}
}
LOGERROR("Cannot serialise JS objects of type 'function': %s", utf8_from_wstring(funcname));
throw PSERROR_Serialize_InvalidScriptValue();
}
case JSTYPE_STRING:
{
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_STRING);
JS::RootedString stringVal(cx, val.toString());
ScriptString("string", stringVal);
break;
}
case JSTYPE_NUMBER:
{
// To reduce the size of the serialized data, we handle integers and doubles separately.
// We can't check for val.isInt32 and val.isDouble directly, because integer numbers are not guaranteed
// to be represented as integers. A number like 33 could be stored as integer on the computer of one player
// and as double on the other player's computer. That would cause out of sync errors in multiplayer games because
// their binary representation and thus the hash would be different.
double d;
d = val.toNumber();
i32 integer;
if (JS_DoubleIsInt32(d, &integer))
{
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_INT);
m_Serializer.NumberI32_Unbounded("value", integer);
}
else
{
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_DOUBLE);
m_Serializer.NumberDouble_Unbounded("value", d);
}
break;
}
case JSTYPE_BOOLEAN:
{
m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_BOOLEAN);
bool b = val.toBoolean();
m_Serializer.NumberU8_Unbounded("value", b ? 1 : 0);
break;
}
default:
{
debug_warn(L"Invalid TypeOfValue");
throw PSERROR_Serialize_InvalidScriptValue();
}
}
}
bool ScriptInterface::EnumeratePropertyNamesWithPrefix(JS::HandleValue objVal, const char* prefix, std::vector<std::string>& out)
{
JSAutoRequest rq(m->m_cx);
if (!objVal.isObjectOrNull())
{
LOGERROR("EnumeratePropertyNamesWithPrefix expected object type!");
return false;
}
if (objVal.isNull())
return true; // reached the end of the prototype chain
JS::RootedObject obj(m->m_cx, &objVal.toObject());
JS::AutoIdArray props(m->m_cx, JS_Enumerate(m->m_cx, obj));
if (!props)
return false;
for (size_t i = 0; i < props.length(); ++i)
{
JS::RootedId id(m->m_cx, props[i]);
JS::RootedValue val(m->m_cx);
if (!JS_IdToValue(m->m_cx, id, &val))
return false;
if (!val.isString())
continue; // ignore integer properties
JS::RootedString name(m->m_cx, val.toString());
size_t len = strlen(prefix)+1;
std::vector<char> buf(len);
size_t prefixLen = strlen(prefix) * sizeof(char);
JS_EncodeStringToBuffer(m->m_cx, name, &buf[0], prefixLen);
buf[len-1]= '\0';
if (0 == strcmp(&buf[0], prefix))
{
if (JS_StringHasLatin1Chars(name))
{
size_t length;
JS::AutoCheckCannotGC nogc;
const JS::Latin1Char* chars = JS_GetLatin1StringCharsAndLength(m->m_cx, nogc, name, &length);
if (chars)
out.push_back(std::string(chars, chars+length));
}
else
{
size_t length;
JS::AutoCheckCannotGC nogc;
const char16_t* chars = JS_GetTwoByteStringCharsAndLength(m->m_cx, nogc, name, &length);
if (chars)
out.push_back(std::string(chars, chars+length));
}
}
}
// Recurse up the prototype chain
JS::RootedObject prototype(m->m_cx);
if (JS_GetPrototype(m->m_cx, obj, &prototype))
{
JS::RootedValue prototypeVal(m->m_cx, JS::ObjectOrNullValue(prototype));
if (!EnumeratePropertyNamesWithPrefix(prototypeVal, prefix, out))
return false;
}
return true;
}