bool
document_resolve(JSContext *cx, JS::HandleObject obj, JS::HandleId id, unsigned flags,
JS::MutableHandleObject objp)
{
// If id is "all", resolve document.all=true.
JS::RootedValue v(cx);
if (!JS_IdToValue(cx, id, &v))
return false;
if (JSVAL_IS_STRING(v)) {
JSString *str = JSVAL_TO_STRING(v);
JSFlatString *flatStr = JS_FlattenString(cx, str);
if (!flatStr)
return false;
if (JS_FlatStringEqualsAscii(flatStr, "all")) {
JS::Rooted<JSObject*> docAll(cx,
JS_NewObject(cx, &DocumentAllClass, JS::NullPtr(), JS::NullPtr()));
if (!docAll)
return false;
JS::Rooted<JS::Value> allValue(cx, ObjectValue(*docAll));
bool ok = JS_DefinePropertyById(cx, obj, id, allValue, nullptr, nullptr, 0);
objp.set(ok ? obj.get() : nullptr);
return ok;
}
}
objp.set(nullptr);
return true;
}
JSStringWrapper::JSStringWrapper(JSContext* cx, JSString* str) : _isSet(true) {
if (!str)
throwCurrentJSException(cx, ErrorCodes::InternalError, "Cannot encode null JSString");
// We have to do this flatstring thing because no public api tells us
// how long the utf8 strings we get out are.
//
// Well, at least js/CharacterEncoding's GetDeflatedUTF8StringLength
// and JS_flattenString are all in the public headers...
JSFlatString* flat = JS_FlattenString(cx, str);
if (!flat)
throwCurrentJSException(cx, ErrorCodes::InternalError, "Failed to flatten JSString");
_length = JS::GetDeflatedUTF8StringLength(flat);
char* out;
if (_length < sizeof(_buf)) {
out = _buf;
} else {
_str.reset(new char[_length + 1]);
out = _str.get();
}
JS::DeflateStringToUTF8Buffer(flat, mozilla::RangedPtr<char>(out, _length));
out[_length] = '\0';
}
FRAGMENT(JSString, subclasses) {
js::Rooted<JSFlatString *> flat(cx, JS_FlattenString(cx, JS_NewStringCopyZ(cx, "Hi!")));
breakpoint();
(void) flat;
}
bool
document_resolve(JSContext *cx, JS::HandleObject obj, JS::HandleId id, bool *resolvedp)
{
// If id is "all", resolve document.all=true.
JS::RootedValue v(cx);
if (!JS_IdToValue(cx, id, &v))
return false;
if (v.isString()) {
JSString *str = v.toString();
JSFlatString *flatStr = JS_FlattenString(cx, str);
if (!flatStr)
return false;
if (JS_FlatStringEqualsAscii(flatStr, "all")) {
JS::Rooted<JSObject*> docAll(cx,
JS_NewObject(cx, &DocumentAllClass, JS::NullPtr(), JS::NullPtr()));
if (!docAll)
return false;
JS::Rooted<JS::Value> allValue(cx, JS::ObjectValue(*docAll));
if (!JS_DefinePropertyById(cx, obj, id, allValue, 0))
return false;
*resolvedp = true;
return true;
}
}
*resolvedp = false;
return true;
}
FRAGMENT(JSString, subclasses) {
JS::Rooted<JSFlatString*> flat(
cx, JS_FlattenString(cx, JS_NewStringCopyZ(cx, "Hi!")));
breakpoint();
use(flat);
}
bool
doResolve(JSObject *obj, jsid id, uintN flags, JSObject **objp)
{
CHECK_EQUAL(resolveExitCount, 0);
AutoIncrCounters incr(this);
CHECK_EQUAL(obj, obj1 || obj == obj2);
CHECK(JSID_IS_STRING(id));
JSFlatString *str = JS_FlattenString(cx, JSID_TO_STRING(id));
CHECK(str);
jsval v;
if (JS_FlatStringEqualsAscii(str, "x")) {
if (obj == obj1) {
/* First resolve hook invocation. */
CHECK_EQUAL(resolveEntryCount, 1);
EVAL("obj2.y = true", &v);
CHECK_SAME(v, JSVAL_TRUE);
CHECK(JS_DefinePropertyById(cx, obj, id, JSVAL_FALSE, NULL, NULL, 0));
*objp = obj;
return true;
}
if (obj == obj2) {
CHECK_EQUAL(resolveEntryCount, 4);
*objp = NULL;
return true;
}
} else if (JS_FlatStringEqualsAscii(str, "y")) {
if (obj == obj2) {
CHECK_EQUAL(resolveEntryCount, 2);
CHECK(JS_DefinePropertyById(cx, obj, id, JSVAL_NULL, NULL, NULL, 0));
EVAL("obj1.x", &v);
CHECK(JSVAL_IS_VOID(v));
EVAL("obj1.y", &v);
CHECK_SAME(v, JSVAL_ZERO);
*objp = obj;
return true;
}
if (obj == obj1) {
CHECK_EQUAL(resolveEntryCount, 3);
EVAL("obj1.x", &v);
CHECK(JSVAL_IS_VOID(v));
EVAL("obj1.y", &v);
CHECK(JSVAL_IS_VOID(v));
EVAL("obj2.y", &v);
CHECK(JSVAL_IS_NULL(v));
EVAL("obj2.x", &v);
CHECK(JSVAL_IS_VOID(v));
EVAL("obj1.y = 0", &v);
CHECK_SAME(v, JSVAL_ZERO);
*objp = obj;
return true;
}
}
CHECK(false);
return false;
}
bool
doResolve(JSHandleObject obj, JSHandleId id, unsigned flags, JSMutableHandleObject objp)
{
CHECK_EQUAL(resolveExitCount, 0);
AutoIncrCounters incr(this);
CHECK_EQUAL(obj, obj1 || obj == obj2);
CHECK(JSID_IS_STRING(id));
JSFlatString *str = JS_FlattenString(cx, JSID_TO_STRING(id));
CHECK(str);
JS::RootedValue v(cx);
if (JS_FlatStringEqualsAscii(str, "x")) {
if (obj == obj1) {
/* First resolve hook invocation. */
CHECK_EQUAL(resolveEntryCount, 1);
EVAL("obj2.y = true", v.address());
CHECK_SAME(v, JSVAL_TRUE);
CHECK(JS_DefinePropertyById(cx, obj, id, JSVAL_FALSE, NULL, NULL, 0));
objp.set(obj);
return true;
}
if (obj == obj2) {
CHECK_EQUAL(resolveEntryCount, 4);
objp.set(NULL);
return true;
}
} else if (JS_FlatStringEqualsAscii(str, "y")) {
if (obj == obj2) {
CHECK_EQUAL(resolveEntryCount, 2);
CHECK(JS_DefinePropertyById(cx, obj, id, JSVAL_NULL, NULL, NULL, 0));
EVAL("obj1.x", v.address());
CHECK(JSVAL_IS_VOID(v));
EVAL("obj1.y", v.address());
CHECK_SAME(v, JSVAL_ZERO);
objp.set(obj);
return true;
}
if (obj == obj1) {
CHECK_EQUAL(resolveEntryCount, 3);
EVAL("obj1.x", v.address());
CHECK(JSVAL_IS_VOID(v));
EVAL("obj1.y", v.address());
CHECK(JSVAL_IS_VOID(v));
EVAL("obj2.y", v.address());
CHECK(JSVAL_IS_NULL(v));
EVAL("obj2.x", v.address());
CHECK(JSVAL_IS_VOID(v));
EVAL("obj1.y = 0", v.address());
CHECK_SAME(v, JSVAL_ZERO);
objp.set(obj);
return true;
}
}
CHECK(false);
return false;
}
bool
doResolve(JS::HandleObject obj, JS::HandleId id, bool* resolvedp)
{
CHECK_EQUAL(resolveExitCount, 0);
AutoIncrCounters incr(this);
CHECK(obj == obj1 || obj == obj2);
CHECK(JSID_IS_STRING(id));
JSFlatString* str = JS_FlattenString(cx, JSID_TO_STRING(id));
CHECK(str);
JS::RootedValue v(cx);
if (JS_FlatStringEqualsAscii(str, "x")) {
if (obj == obj1) {
/* First resolve hook invocation. */
CHECK_EQUAL(resolveEntryCount, 1);
EVAL("obj2.y = true", &v);
CHECK(v.isTrue());
CHECK(JS_DefinePropertyById(cx, obj, id, JS::FalseHandleValue, JSPROP_RESOLVING));
*resolvedp = true;
return true;
}
if (obj == obj2) {
CHECK_EQUAL(resolveEntryCount, 4);
*resolvedp = false;
return true;
}
} else if (JS_FlatStringEqualsAscii(str, "y")) {
if (obj == obj2) {
CHECK_EQUAL(resolveEntryCount, 2);
CHECK(JS_DefinePropertyById(cx, obj, id, JS::NullHandleValue, JSPROP_RESOLVING));
EVAL("obj1.x", &v);
CHECK(v.isUndefined());
EVAL("obj1.y", &v);
CHECK(v.isInt32(0));
*resolvedp = true;
return true;
}
if (obj == obj1) {
CHECK_EQUAL(resolveEntryCount, 3);
EVAL("obj1.x", &v);
CHECK(v.isUndefined());
EVAL("obj1.y", &v);
CHECK(v.isUndefined());
EVAL("obj2.y", &v);
CHECK(v.isNull());
EVAL("obj2.x", &v);
CHECK(v.isUndefined());
EVAL("obj1.y = 0", &v);
CHECK(v.isInt32(0));
*resolvedp = true;
return true;
}
}
CHECK(false);
return false;
}
static JSBool js_flatten(JSContext *cx, uintN argc, jsval *arglist)
{
jsval *argv=JS_ARGV(cx, arglist);
if(!JSVAL_IS_STRING(argv[0])) {
JS_ReportError(cx, "get_size() error! Parameter is not a string.");
return(JS_FALSE);
}
JS_FlattenString(cx, JSVAL_TO_STRING(argv[0]));
JS_SET_RVAL(cx, arglist, JSVAL_VOID);
return(JS_TRUE);
}
JSBool
document_resolve(JSContext *cx, JSHandleObject obj, JSHandleId id, unsigned flags, JSObject **objp)
{
// If id is "all", and we're not detecting, resolve document.all=true.
jsvalRoot v(cx);
if (!JS_IdToValue(cx, id, v.addr()))
return false;
if (JSVAL_IS_STRING(v.value())) {
JSString *str = JSVAL_TO_STRING(v.value());
JSFlatString *flatStr = JS_FlattenString(cx, str);
if (!flatStr)
return false;
if (JS_FlatStringEqualsAscii(flatStr, "all") && !(flags & JSRESOLVE_DETECTING)) {
JSBool ok = JS_DefinePropertyById(cx, obj, id, JSVAL_TRUE, NULL, NULL, 0);
*objp = ok ? obj.value() : NULL;
return ok;
}
}
*objp = NULL;
return true;
}
JSObject*
Library::Create(JSContext* cx, HandleValue path, const JSCTypesCallbacks* callbacks)
{
RootedObject libraryObj(cx, JS_NewObject(cx, &sLibraryClass));
if (!libraryObj)
return nullptr;
// initialize the library
JS_SetReservedSlot(libraryObj, SLOT_LIBRARY, PrivateValue(nullptr));
// attach API functions
if (!JS_DefineFunctions(cx, libraryObj, sLibraryFunctions))
return nullptr;
if (!path.isString()) {
JS_ReportErrorASCII(cx, "open takes a string argument");
return nullptr;
}
PRLibSpec libSpec;
RootedFlatString pathStr(cx, JS_FlattenString(cx, path.toString()));
if (!pathStr)
return nullptr;
AutoStableStringChars pathStrChars(cx);
if (!pathStrChars.initTwoByte(cx, pathStr))
return nullptr;
#ifdef XP_WIN
// On Windows, converting to native charset may corrupt path string.
// So, we have to use Unicode path directly.
char16ptr_t pathChars = pathStrChars.twoByteChars();
libSpec.value.pathname_u = pathChars;
libSpec.type = PR_LibSpec_PathnameU;
#else
// Convert to platform native charset if the appropriate callback has been
// provided.
char* pathBytes;
if (callbacks && callbacks->unicodeToNative) {
pathBytes =
callbacks->unicodeToNative(cx, pathStrChars.twoByteChars(), pathStr->length());
if (!pathBytes)
return nullptr;
} else {
// Fallback: assume the platform native charset is UTF-8. This is true
// for Mac OS X, Android, and probably Linux.
size_t nbytes =
GetDeflatedUTF8StringLength(cx, pathStrChars.twoByteChars(), pathStr->length());
if (nbytes == (size_t) -1)
return nullptr;
pathBytes = static_cast<char*>(JS_malloc(cx, nbytes + 1));
if (!pathBytes)
return nullptr;
ASSERT_OK(DeflateStringToUTF8Buffer(cx, pathStrChars.twoByteChars(),
pathStr->length(), pathBytes, &nbytes));
pathBytes[nbytes] = 0;
}
libSpec.value.pathname = pathBytes;
libSpec.type = PR_LibSpec_Pathname;
#endif
PRLibrary* library = PR_LoadLibraryWithFlags(libSpec, PR_LD_NOW);
#ifndef XP_WIN
JS_free(cx, pathBytes);
#endif
if (!library) {
#define MAX_ERROR_LEN 1024
char error[MAX_ERROR_LEN] = "Cannot get error from NSPR.";
uint32_t errorLen = PR_GetErrorTextLength();
if (errorLen && errorLen < MAX_ERROR_LEN)
PR_GetErrorText(error);
#undef MAX_ERROR_LEN
if (JS::StringIsASCII(error)) {
JSAutoByteString pathCharsUTF8;
if (pathCharsUTF8.encodeUtf8(cx, pathStr))
JS_ReportErrorUTF8(cx, "couldn't open library %s: %s", pathCharsUTF8.ptr(), error);
} else {
JSAutoByteString pathCharsLatin1;
if (pathCharsLatin1.encodeLatin1(cx, pathStr))
JS_ReportErrorLatin1(cx, "couldn't open library %s: %s", pathCharsLatin1.ptr(), error);
}
return nullptr;
}
// stash the library
JS_SetReservedSlot(libraryObj, SLOT_LIBRARY, PrivateValue(library));
return libraryObj;
}
JSObject*
Library::Create(JSContext* cx, jsval path, JSCTypesCallbacks* callbacks)
{
JSObject* libraryObj = JS_NewObject(cx, &sLibraryClass, NULL, NULL);
if (!libraryObj)
return NULL;
js::AutoObjectRooter root(cx, libraryObj);
// initialize the library
if (!JS_SetReservedSlot(cx, libraryObj, SLOT_LIBRARY, PRIVATE_TO_JSVAL(NULL)))
return NULL;
// attach API functions
if (!JS_DefineFunctions(cx, libraryObj, sLibraryFunctions))
return NULL;
if (!JSVAL_IS_STRING(path)) {
JS_ReportError(cx, "open takes a string argument");
return NULL;
}
PRLibSpec libSpec;
JSFlatString* pathStr = JS_FlattenString(cx, JSVAL_TO_STRING(path));
if (!pathStr)
return NULL;
#ifdef XP_WIN
// On Windows, converting to native charset may corrupt path string.
// So, we have to use Unicode path directly.
const PRUnichar* pathChars = JS_GetFlatStringChars(pathStr);
if (!pathChars)
return NULL;
libSpec.value.pathname_u = pathChars;
libSpec.type = PR_LibSpec_PathnameU;
#else
// Convert to platform native charset if the appropriate callback has been
// provided.
char* pathBytes;
if (callbacks && callbacks->unicodeToNative) {
pathBytes =
callbacks->unicodeToNative(cx, pathStr->chars(), pathStr->length());
if (!pathBytes)
return NULL;
} else {
// Fallback: assume the platform native charset is UTF-8. This is true
// for Mac OS X, Android, and probably Linux.
size_t nbytes =
js_GetDeflatedUTF8StringLength(cx, pathStr->chars(), pathStr->length());
if (nbytes == (size_t) -1)
return NULL;
pathBytes = static_cast<char*>(JS_malloc(cx, nbytes + 1));
if (!pathBytes)
return NULL;
ASSERT_OK(js_DeflateStringToUTF8Buffer(cx, pathStr->chars(),
pathStr->length(), pathBytes, &nbytes));
pathBytes[nbytes] = 0;
}
libSpec.value.pathname = pathBytes;
libSpec.type = PR_LibSpec_Pathname;
#endif
PRLibrary* library = PR_LoadLibraryWithFlags(libSpec, 0);
#ifndef XP_WIN
JS_free(cx, pathBytes);
#endif
if (!library) {
JS_ReportError(cx, "couldn't open library");
return NULL;
}
// stash the library
if (!JS_SetReservedSlot(cx, libraryObj, SLOT_LIBRARY,
PRIVATE_TO_JSVAL(library)))
return NULL;
return libraryObj;
}
bool
ExposedPropertiesOnly::check(JSContext* cx, HandleObject wrapper, HandleId id, Wrapper::Action act)
{
RootedObject wrappedObject(cx, Wrapper::wrappedObject(wrapper));
if (act == Wrapper::CALL)
return false;
// For the case of getting a property descriptor, we allow if either GET or SET
// is allowed, and rely on FilteringWrapper to filter out any disallowed accessors.
if (act == Wrapper::GET_PROPERTY_DESCRIPTOR) {
return check(cx, wrapper, id, Wrapper::GET) ||
check(cx, wrapper, id, Wrapper::SET);
}
RootedId exposedPropsId(cx, GetRTIdByIndex(cx, XPCJSRuntime::IDX_EXPOSEDPROPS));
// We need to enter the wrappee's compartment to look at __exposedProps__,
// but we want to be in the wrapper's compartment if we call Deny().
//
// Unfortunately, |cx| can be in either compartment when we call ::check. :-(
JSAutoCompartment ac(cx, wrappedObject);
bool found = false;
if (!JS_HasPropertyById(cx, wrappedObject, exposedPropsId, &found))
return false;
// If no __exposedProps__ existed, deny access.
if (!found) {
// Previously we automatically granted access to indexed properties and
// .length for Array COWs. We're not doing that anymore, so make sure to
// let people know what's going on.
bool isArray;
if (!JS_IsArrayObject(cx, wrappedObject, &isArray))
return false;
if (!isArray)
isArray = JS_IsTypedArrayObject(wrappedObject);
bool isIndexedAccessOnArray = isArray && JSID_IS_INT(id) && JSID_TO_INT(id) >= 0;
bool isLengthAccessOnArray = isArray && JSID_IS_STRING(id) &&
JS_FlatStringEqualsAscii(JSID_TO_FLAT_STRING(id), "length");
if (isIndexedAccessOnArray || isLengthAccessOnArray) {
JSAutoCompartment ac2(cx, wrapper);
ReportWrapperDenial(cx, id, WrapperDenialForCOW,
"Access to elements and length of privileged Array not permitted");
}
return false;
}
if (id == JSID_VOID)
return true;
Rooted<JSPropertyDescriptor> desc(cx);
if (!JS_GetPropertyDescriptorById(cx, wrappedObject, exposedPropsId, &desc))
return false;
if (!desc.object())
return false;
if (desc.hasGetterOrSetter()) {
EnterAndThrow(cx, wrapper, "__exposedProps__ must be a value property");
return false;
}
RootedValue exposedProps(cx, desc.value());
if (exposedProps.isNullOrUndefined())
return false;
if (!exposedProps.isObject()) {
EnterAndThrow(cx, wrapper, "__exposedProps__ must be undefined, null, or an Object");
return false;
}
RootedObject hallpass(cx, &exposedProps.toObject());
if (!AccessCheck::subsumes(js::UncheckedUnwrap(hallpass), wrappedObject)) {
EnterAndThrow(cx, wrapper, "Invalid __exposedProps__");
return false;
}
Access access = NO_ACCESS;
if (!JS_GetPropertyDescriptorById(cx, hallpass, id, &desc)) {
return false; // Error
}
if (!desc.object() || !desc.enumerable())
return false;
if (!desc.value().isString()) {
EnterAndThrow(cx, wrapper, "property must be a string");
return false;
}
JSFlatString* flat = JS_FlattenString(cx, desc.value().toString());
if (!flat)
return false;
size_t length = JS_GetStringLength(JS_FORGET_STRING_FLATNESS(flat));
for (size_t i = 0; i < length; ++i) {
char16_t ch = JS_GetFlatStringCharAt(flat, i);
switch (ch) {
case 'r':
if (access & READ) {
EnterAndThrow(cx, wrapper, "duplicate 'readable' property flag");
return false;
}
access = Access(access | READ);
break;
case 'w':
if (access & WRITE) {
EnterAndThrow(cx, wrapper, "duplicate 'writable' property flag");
return false;
}
access = Access(access | WRITE);
break;
default:
EnterAndThrow(cx, wrapper, "properties can only be readable or read and writable");
return false;
}
}
if (access == NO_ACCESS) {
EnterAndThrow(cx, wrapper, "specified properties must have a permission bit set");
return false;
}
if ((act == Wrapper::SET && !(access & WRITE)) ||
(act != Wrapper::SET && !(access & READ))) {
return false;
}
// Inspect the property on the underlying object to check for red flags.
if (!JS_GetPropertyDescriptorById(cx, wrappedObject, id, &desc))
return false;
// Reject accessor properties.
if (desc.hasGetterOrSetter()) {
EnterAndThrow(cx, wrapper, "Exposing privileged accessor properties is prohibited");
return false;
}
// Reject privileged or cross-origin callables.
if (desc.value().isObject()) {
RootedObject maybeCallable(cx, js::UncheckedUnwrap(&desc.value().toObject()));
if (JS::IsCallable(maybeCallable) && !AccessCheck::subsumes(wrapper, maybeCallable)) {
EnterAndThrow(cx, wrapper, "Exposing privileged or cross-origin callable is prohibited");
return false;
}
}
return true;
}
bool
ExposedPropertiesOnly::check(JSContext *cx, HandleObject wrapper, HandleId id, Wrapper::Action act)
{
RootedObject wrappedObject(cx, Wrapper::wrappedObject(wrapper));
if (act == Wrapper::CALL)
return true;
// For the case of getting a property descriptor, we allow if either GET or SET
// is allowed, and rely on FilteringWrapper to filter out any disallowed accessors.
if (act == Wrapper::GET_PROPERTY_DESCRIPTOR) {
return check(cx, wrapper, id, Wrapper::GET) ||
check(cx, wrapper, id, Wrapper::SET);
}
RootedId exposedPropsId(cx, GetRTIdByIndex(cx, XPCJSRuntime::IDX_EXPOSEDPROPS));
// We need to enter the wrappee's compartment to look at __exposedProps__,
// but we want to be in the wrapper's compartment if we call Deny().
//
// Unfortunately, |cx| can be in either compartment when we call ::check. :-(
JSAutoCompartment ac(cx, wrappedObject);
bool found = false;
if (!JS_HasPropertyById(cx, wrappedObject, exposedPropsId, &found))
return false;
// Always permit access to "length" and indexed properties of arrays.
if ((JS_IsArrayObject(cx, wrappedObject) ||
JS_IsTypedArrayObject(wrappedObject)) &&
((JSID_IS_INT(id) && JSID_TO_INT(id) >= 0) ||
(JSID_IS_STRING(id) && JS_FlatStringEqualsAscii(JSID_TO_FLAT_STRING(id), "length")))) {
return true; // Allow
}
// If no __exposedProps__ existed, deny access.
if (!found) {
return false;
}
if (id == JSID_VOID)
return true;
RootedValue exposedProps(cx);
if (!JS_LookupPropertyById(cx, wrappedObject, exposedPropsId, &exposedProps))
return false;
if (exposedProps.isNullOrUndefined())
return false;
if (!exposedProps.isObject()) {
EnterAndThrow(cx, wrapper, "__exposedProps__ must be undefined, null, or an Object");
return false;
}
RootedObject hallpass(cx, &exposedProps.toObject());
if (!AccessCheck::subsumes(js::UncheckedUnwrap(hallpass), wrappedObject)) {
EnterAndThrow(cx, wrapper, "Invalid __exposedProps__");
return false;
}
Access access = NO_ACCESS;
Rooted<JSPropertyDescriptor> desc(cx);
if (!JS_GetPropertyDescriptorById(cx, hallpass, id, &desc)) {
return false; // Error
}
if (!desc.object() || !desc.isEnumerable())
return false;
if (!desc.value().isString()) {
EnterAndThrow(cx, wrapper, "property must be a string");
return false;
}
JSFlatString *flat = JS_FlattenString(cx, desc.value().toString());
if (!flat)
return false;
size_t length = JS_GetStringLength(JS_FORGET_STRING_FLATNESS(flat));
for (size_t i = 0; i < length; ++i) {
char16_t ch = JS_GetFlatStringCharAt(flat, i);
switch (ch) {
case 'r':
if (access & READ) {
EnterAndThrow(cx, wrapper, "duplicate 'readable' property flag");
return false;
}
access = Access(access | READ);
break;
case 'w':
if (access & WRITE) {
EnterAndThrow(cx, wrapper, "duplicate 'writable' property flag");
return false;
}
access = Access(access | WRITE);
break;
default:
EnterAndThrow(cx, wrapper, "properties can only be readable or read and writable");
return false;
}
}
if (access == NO_ACCESS) {
EnterAndThrow(cx, wrapper, "specified properties must have a permission bit set");
return false;
}
if ((act == Wrapper::SET && !(access & WRITE)) ||
(act != Wrapper::SET && !(access & READ))) {
return false;
}
return true;
}