本文整理汇总了C++中MessageChannel::IsInTransaction方法的典型用法代码示例。如果您正苦于以下问题：C++ MessageChannel::IsInTransaction方法的具体用法？C++ MessageChannel::IsInTransaction怎么用？C++ MessageChannel::IsInTransaction使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类MessageChannel的用法示例。
在下文中一共展示了MessageChannel::IsInTransaction方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: GetIPCChannel
bool
JavaScriptParent::allowMessage(JSContext* cx)
{
MessageChannel* channel = GetIPCChannel();
if (channel->IsInTransaction())
return true;
if (ForbidUnsafeBrowserCPOWs()) {
if (JSObject* global = JS::CurrentGlobalOrNull(cx)) {
if (!JS::AddonIdOfObject(global)) {
JS_ReportError(cx, "unsafe CPOW usage forbidden");
return false;
}
}
}
static bool disableUnsafeCPOWWarnings = PR_GetEnv("DISABLE_UNSAFE_CPOW_WARNINGS");
if (!disableUnsafeCPOWWarnings) {
nsCOMPtr<nsIConsoleService> console(do_GetService(NS_CONSOLESERVICE_CONTRACTID));
if (console && cx) {
nsAutoString filename;
uint32_t lineno = 0, column = 0;
nsJSUtils::GetCallingLocation(cx, filename, &lineno, &column);
nsCOMPtr<nsIScriptError> error(do_CreateInstance(NS_SCRIPTERROR_CONTRACTID));
error->Init(NS_LITERAL_STRING("unsafe CPOW usage"), filename,
EmptyString(), lineno, column,
nsIScriptError::warningFlag, "chrome javascript");
console->LogMessage(error);
} else {
NS_WARNING("Unsafe synchronous IPC message");
}
}
return true;
}示例2: ac
bool
JavaScriptParent::allowMessage(JSContext* cx)
{
// If we're running browser code, then we allow all safe CPOWs and forbid
// unsafe CPOWs based on a pref (which defaults to forbidden). We also allow
// CPOWs unconditionally in selected globals (based on
// Cu.permitCPOWsInScope).
//
// If we're running add-on code, then we check if the add-on is multiprocess
// compatible (which eventually translates to a given setting of allowCPOWs
// on the scopw). If it's not compatible, then we allow the CPOW but
// warn. If it is marked as compatible, then we check the
// ForbidCPOWsInCompatibleAddon; see the comment there.
MessageChannel* channel = GetIPCChannel();
bool isSafe = channel->IsInTransaction();
bool warn = !isSafe;
nsIGlobalObject* global = dom::GetIncumbentGlobal();
JS::Rooted<JSObject*> jsGlobal(cx, global ? global->GetGlobalJSObject() : nullptr);
if (jsGlobal) {
JSAutoCompartment ac(cx, jsGlobal);
JSAddonId* addonId = JS::AddonIdOfObject(jsGlobal);
if (!xpc::CompartmentPrivate::Get(jsGlobal)->allowCPOWs) {
if (!addonId && ForbidUnsafeBrowserCPOWs() && !isSafe) {
Telemetry::Accumulate(Telemetry::BROWSER_SHIM_USAGE_BLOCKED, 1);
JS_ReportErrorASCII(cx, "unsafe CPOW usage forbidden");
return false;
}
if (addonId) {
JSFlatString* flat = JS_ASSERT_STRING_IS_FLAT(JS::StringOfAddonId(addonId));
nsString addonIdString;
AssignJSFlatString(addonIdString, flat);
NS_ConvertUTF16toUTF8 addonIdCString(addonIdString);
Telemetry::Accumulate(Telemetry::ADDON_FORBIDDEN_CPOW_USAGE, addonIdCString);
if (ForbidCPOWsInCompatibleAddon(addonIdCString)) {
JS_ReportErrorASCII(cx, "CPOW usage forbidden in this add-on");
return false;
}
warn = true;
}
}
}
if (!warn)
return true;
static bool disableUnsafeCPOWWarnings = PR_GetEnv("DISABLE_UNSAFE_CPOW_WARNINGS");
if (!disableUnsafeCPOWWarnings) {
nsCOMPtr<nsIConsoleService> console(do_GetService(NS_CONSOLESERVICE_CONTRACTID));
if (console && cx) {
nsAutoString filename;
uint32_t lineno = 0, column = 0;
nsJSUtils::GetCallingLocation(cx, filename, &lineno, &column);
nsCOMPtr<nsIScriptError> error(do_CreateInstance(NS_SCRIPTERROR_CONTRACTID));
error->Init(NS_LITERAL_STRING("unsafe/forbidden CPOW usage"), filename,
EmptyString(), lineno, column,
nsIScriptError::warningFlag, "chrome javascript");
console->LogMessage(error);
} else {
NS_WARNING("Unsafe synchronous IPC message");
}
}
return true;
}