// Copyright 2015 The Crashpad Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "util/win/ntstatus_logging.h"
#include <iterator>
#include <string>
#include "base/immediate_crash.h"
#include "base/scoped_clear_last_error.h"
#include "base/strings/stringprintf.h"
#include "build/build_config.h"
namespace {
std::string FormatNtstatus(DWORD ntstatus) {
char msgbuf[256];
DWORD len = FormatMessageA(
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS |
FORMAT_MESSAGE_MAX_WIDTH_MASK | FORMAT_MESSAGE_FROM_HMODULE,
GetModuleHandle(L"ntdll.dll"),
ntstatus,
0,
msgbuf,
static_cast<DWORD>(std::size(msgbuf)),
nullptr);
if (len) {
// Most system messages end in a period and a space. Remove the space if
// it’s there, because ~NtstatusLogMessage() includes one.
if (len >= 1 && msgbuf[len - 1] == ' ') {
msgbuf[len - 1] = '\0';
}
return msgbuf;
} else {
return base::StringPrintf("<failed to retrieve error message (0x%lx)>",
GetLastError());
}
}
} // namespace
namespace logging {
NtstatusLogMessage::NtstatusLogMessage(
#if defined(MINI_CHROMIUM_BASE_LOGGING_H_)
const char* function,
#endif
const char* file_path,
int line,
LogSeverity severity,
DWORD ntstatus)
: LogMessage(
#if defined(MINI_CHROMIUM_BASE_LOGGING_H_)
function,
#endif
file_path,
line,
severity),
ntstatus_(ntstatus) {
}
NtstatusLogMessage::~NtstatusLogMessage() {
AppendError();
}
void NtstatusLogMessage::AppendError() {
// Don't let actions from this method affect the system error after returning.
base::ScopedClearLastError scoped_clear_last_error;
stream() << ": " << FormatNtstatus(ntstatus_)
<< base::StringPrintf(" (0x%08lx)", ntstatus_);
}
#if defined(COMPILER_MSVC)
// Ignore warning that ~NtStatusLogMessageFatal never returns.
#pragma warning(push)
#pragma warning(disable : 4722)
#endif // COMPILER_MSVC
NtstatusLogMessageFatal::~NtstatusLogMessageFatal() {
AppendError();
Flush();
base::ImmediateCrash();
}
#if defined(COMPILER_MSVC)
#pragma warning(pop) // C4722
#endif // COMPILER_MSVC
} // namespace logging