/* |callee| requires a usage string provided by JS_DefineFunctionsWithHelp. */
void
js::ReportUsageError(JSContext *cx, HandleObject callee, const char *msg)
{
const char *usageStr = "usage";
PropertyName *usageAtom = Atomize(cx, usageStr, strlen(usageStr))->asPropertyName();
RootedId id(cx, NameToId(usageAtom));
DebugOnly<Shape *> shape = static_cast<Shape *>(callee->as<NativeObject>().lookup(cx, id));
MOZ_ASSERT(!shape->configurable());
MOZ_ASSERT(!shape->writable());
MOZ_ASSERT(shape->hasDefaultGetter());
RootedValue usage(cx);
if (!JS_LookupProperty(cx, callee, "usage", &usage))
return;
if (usage.isUndefined()) {
JS_ReportError(cx, "%s", msg);
} else {
JSString *str = usage.toString();
if (!str->ensureFlat(cx))
return;
AutoStableStringChars chars(cx);
if (!chars.initTwoByte(cx, str))
return;
JS_ReportError(cx, "%s. Usage: %hs", msg, chars.twoByteRange().start().get());
}
}
bool
SecurityWrapper<Base>::defineProperty(JSContext *cx, HandleObject wrapper,
HandleId id, MutableHandle<PropertyDescriptor> desc) const
{
if (desc.getter() || desc.setter()) {
JSString *str = IdToString(cx, id);
AutoStableStringChars chars(cx);
const jschar *prop = nullptr;
if (str->ensureFlat(cx) && chars.initTwoByte(cx, str))
prop = chars.twoByteChars();
JS_ReportErrorNumberUC(cx, js_GetErrorMessage, nullptr,
JSMSG_ACCESSOR_DEF_DENIED, prop);
return false;
}
return Base::defineProperty(cx, wrapper, id, desc);
}
void
js::AutoEnterPolicy::reportErrorIfExceptionIsNotPending(JSContext *cx, jsid id)
{
if (JS_IsExceptionPending(cx))
return;
if (JSID_IS_VOID(id)) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, nullptr,
JSMSG_OBJECT_ACCESS_DENIED);
} else {
JSString *str = IdToString(cx, id);
AutoStableStringChars chars(cx);
const char16_t *prop = nullptr;
if (str->ensureFlat(cx) && chars.initTwoByte(cx, str))
prop = chars.twoByteChars();
JS_ReportErrorNumberUC(cx, js_GetErrorMessage, nullptr, JSMSG_PROPERTY_ACCESS_DENIED,
prop);
}
}
bool
SecurityWrapper<Base>::defineProperty(JSContext *cx, HandleObject wrapper,
HandleId id, MutableHandle<PropertyDescriptor> desc,
ObjectOpResult &result) const
{
if (desc.getter() || desc.setter()) {
RootedValue idVal(cx, IdToValue(id));
JSString *str = ValueToSource(cx, idVal);
if (!str)
return false;
AutoStableStringChars chars(cx);
const char16_t *prop = nullptr;
if (str->ensureFlat(cx) && chars.initTwoByte(cx, str))
prop = chars.twoByteChars();
JS_ReportErrorNumberUC(cx, GetErrorMessage, nullptr,
JSMSG_ACCESSOR_DEF_DENIED, prop);
return false;
}
return Base::defineProperty(cx, wrapper, id, desc, result);
}
void
js::AutoEnterPolicy::reportErrorIfExceptionIsNotPending(JSContext* cx, jsid id)
{
if (JS_IsExceptionPending(cx))
return;
if (JSID_IS_VOID(id)) {
ReportAccessDenied(cx);
} else {
RootedValue idVal(cx, IdToValue(id));
JSString* str = ValueToSource(cx, idVal);
if (!str) {
return;
}
AutoStableStringChars chars(cx);
const char16_t* prop = nullptr;
if (str->ensureFlat(cx) && chars.initTwoByte(cx, str))
prop = chars.twoByteChars();
JS_ReportErrorNumberUC(cx, GetErrorMessage, nullptr, JSMSG_PROPERTY_ACCESS_DENIED,
prop);
}
}
static bool
InvokeInterruptCallback(JSContext* cx)
{
MOZ_ASSERT(cx->runtime()->requestDepth >= 1);
cx->runtime()->gc.gcIfRequested();
// A worker thread may have requested an interrupt after finishing an Ion
// compilation.
jit::AttachFinishedCompilations(cx);
// Important: Additional callbacks can occur inside the callback handler
// if it re-enters the JS engine. The embedding must ensure that the
// callback is disconnected before attempting such re-entry.
JSInterruptCallback cb = cx->runtime()->interruptCallback;
if (!cb)
return true;
if (cb(cx)) {
// Debugger treats invoking the interrupt callback as a "step", so
// invoke the onStep handler.
if (cx->compartment()->isDebuggee()) {
ScriptFrameIter iter(cx);
if (!iter.done() && iter.script()->stepModeEnabled()) {
RootedValue rval(cx);
switch (Debugger::onSingleStep(cx, &rval)) {
case JSTRAP_ERROR:
return false;
case JSTRAP_CONTINUE:
return true;
case JSTRAP_RETURN:
// See note in Debugger::propagateForcedReturn.
Debugger::propagateForcedReturn(cx, iter.abstractFramePtr(), rval);
return false;
case JSTRAP_THROW:
cx->setPendingException(rval);
return false;
default:;
}
}
}
return true;
}
// No need to set aside any pending exception here: ComputeStackString
// already does that.
JSString* stack = ComputeStackString(cx);
JSFlatString* flat = stack ? stack->ensureFlat(cx) : nullptr;
const char16_t* chars;
AutoStableStringChars stableChars(cx);
if (flat && stableChars.initTwoByte(cx, flat))
chars = stableChars.twoByteRange().start().get();
else
chars = MOZ_UTF16("(stack not available)");
JS_ReportErrorFlagsAndNumberUC(cx, JSREPORT_WARNING, GetErrorMessage, nullptr,
JSMSG_TERMINATED, chars);
return false;
}
