Source code of Windows XP (NT5)
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96 lines
2.8 KiB

/*****************************************************************************\
FILE: logging.cpp
DESCRIPTION:
Logging helper functions
BryanSt 4/23/2001 (Bryan Starbuck)
Copyright (C) Microsoft Corp 2001-2001. All rights reserved.
\*****************************************************************************/
#include <shlwapi.h> // SHGetValue, wnsprintf, SHFormatDateTime
#ifndef ARRAYSIZE
#define ARRAYSIZE(a) (sizeof((a))/sizeof((a)[0]))
#endif // ARRAYSIZE
HANDLE g_hLogFile = INVALID_HANDLE_VALUE;
void WriteToLogFileA(LPCSTR pszMessage, ...)
{
va_list vaParamList;
va_start(vaParamList, pszMessage);
if (INVALID_HANDLE_VALUE == g_hLogFile)
{
TCHAR szPath[MAX_PATH];
if (GetWindowsDirectory(szPath, ARRAYSIZE(szPath)))
{
PathAppend(szPath, TEXT("AutoPlay.log"));
g_hLogFile = CreateFile(szPath, (GENERIC_READ | GENERIC_WRITE), FILE_SHARE_READ, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if (INVALID_HANDLE_VALUE != g_hLogFile)
{
CHAR szTimeDate[MAX_PATH];
CHAR szHeader[MAX_PATH];
FILETIME ftCurrentUTC;
FILETIME ftCurrent;
SYSTEMTIME stCurrent;
DWORD cbWritten;
SetFilePointer(g_hLogFile, 0, NULL, FILE_END);
GetLocalTime(&stCurrent);
SystemTimeToFileTime(&stCurrent, &ftCurrent);
LocalFileTimeToFileTime(&ftCurrent, &ftCurrentUTC);
SHFormatDateTimeA(&ftCurrentUTC, NULL, szTimeDate, ARRAYSIZE(szTimeDate));
TCHAR szProcess[MAX_PATH];
if (!GetModuleFileName(NULL, szProcess, ARRAYSIZE(szProcess)))
{
szProcess[0] = 0;
}
wnsprintfA(szHeader, ARRAYSIZE(szHeader), "\r\n\r\n%hs - (%ls)\r\n", szTimeDate, /*szUserName,*/ szProcess);
WriteFile(g_hLogFile, szHeader, lstrlenA(szHeader), &cbWritten, NULL);
}
}
}
if (INVALID_HANDLE_VALUE != g_hLogFile)
{
CHAR szMessage[4000];
DWORD cbWritten;
wvsprintfA(szMessage, pszMessage, vaParamList);
WriteFile(g_hLogFile, szMessage, lstrlenA(szMessage), &cbWritten, NULL);
FlushFileBuffers(g_hLogFile);
}
va_end(vaParamList);
}
void WriteToLogFileW(LPCWSTR pszMessage)
{
DWORD cchSize = (lstrlen(pszMessage) + 1);
LPSTR pszMessageAnsi = (LPSTR) LocalAlloc(LPTR, cchSize);
if (pszMessageAnsi)
{
SHUnicodeToAnsi(pszMessage, pszMessageAnsi, cchSize);
WriteToLogFileA(pszMessageAnsi);
}
}
void CloseLogFile(void)
{
if (INVALID_HANDLE_VALUE != g_hLogFile)
{
HANDLE hLogFile = g_hLogFile;
g_hLogFile = INVALID_HANDLE_VALUE;
CloseHandle(hLogFile);
}
}