Source code
Revision control
Copy as Markdown
Other Tools
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "ErrorHandler.h"
#include <utility>
#include "mozilla/CmdLineAndEnvUtils.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/Unused.h"
#if defined(MOZ_LAUNCHER_PROCESS)
# include "mozilla/LauncherRegistryInfo.h"
#endif // defined(MOZ_LAUNCHER_PROCESS)
namespace {
constexpr wchar_t kEventSourceName[] = L"" MOZ_APP_DISPLAYNAME " Launcher";
struct EventSourceDeleter {
using pointer = HANDLE;
void operator()(pointer aEvtSrc) { ::DeregisterEventSource(aEvtSrc); }
};
using EventLog = mozilla::UniquePtr<HANDLE, EventSourceDeleter>;
struct SerializedEventData {
HRESULT mHr;
uint32_t mLine;
char mFile[1];
};
} // anonymous namespace
static void PostErrorToLog(const mozilla::LauncherError& aError) {
// This is very bare-bones; just enough to spit out an HRESULT to the
// Application event log.
EventLog log(::RegisterEventSourceW(nullptr, kEventSourceName));
if (!log) {
return;
}
size_t fileLen = strlen(aError.mFile);
size_t dataLen = sizeof(HRESULT) + sizeof(uint32_t) + fileLen;
auto evtDataBuf = mozilla::MakeUnique<char[]>(dataLen);
SerializedEventData& evtData =
*reinterpret_cast<SerializedEventData*>(evtDataBuf.get());
evtData.mHr = aError.mError.AsHResult();
evtData.mLine = aError.mLine;
// Since this is binary data, we're not concerning ourselves with null
// terminators.
memcpy(evtData.mFile, aError.mFile, fileLen);
::ReportEventW(log.get(), EVENTLOG_ERROR_TYPE, 0, aError.mError.AsHResult(),
nullptr, 0, dataLen, nullptr, evtDataBuf.get());
}
namespace mozilla {
void HandleLauncherError(const LauncherError& aError,
const char* aProcessType) {
#if defined(MOZ_LAUNCHER_PROCESS)
LauncherRegistryInfo regInfo;
Unused << regInfo.DisableDueToFailure();
#endif // defined(MOZ_LAUNCHER_PROCESS)
PostErrorToLog(aError);
}
} // namespace mozilla