在使用APICall GetTokenInformation时,可能会返回错误值。下面是一个解决方法的示例代码:
#include
#include
#include
int main() {
HANDLE currentToken;
DWORD tokenInfoSize;
PTOKEN_USER tokenUser = NULL;
BOOL result;
// 获取当前进程的访问令牌
result = OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, ¤tToken);
if (!result) {
std::cout << "OpenProcessToken failed with error code: " << GetLastError() << std::endl;
return 1;
}
// 获取令牌信息的大小
result = GetTokenInformation(currentToken, TokenUser, NULL, 0, &tokenInfoSize);
if (!result && GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
std::cout << "GetTokenInformation failed with error code: " << GetLastError() << std::endl;
CloseHandle(currentToken);
return 1;
}
// 分配内存来存储令牌信息
tokenUser = (PTOKEN_USER)GlobalAlloc(GPTR, tokenInfoSize);
if (tokenUser == NULL) {
std::cout << "GlobalAlloc failed with error code: " << GetLastError() << std::endl;
CloseHandle(currentToken);
return 1;
}
// 获取令牌信息
result = GetTokenInformation(currentToken, TokenUser, tokenUser, tokenInfoSize, &tokenInfoSize);
if (!result) {
std::cout << "GetTokenInformation failed with error code: " << GetLastError() << std::endl;
GlobalFree(tokenUser);
CloseHandle(currentToken);
return 1;
}
// 获取用户的SID
LPWSTR userSid;
result = ConvertSidToStringSidW(tokenUser->User.Sid, &userSid);
if (!result) {
std::cout << "ConvertSidToStringSidW failed with error code: " << GetLastError() << std::endl;
GlobalFree(tokenUser);
CloseHandle(currentToken);
return 1;
}
// 打印用户的SID
std::wcout << "User SID: " << userSid << std::endl;
// 释放资源
LocalFree(userSid);
GlobalFree(tokenUser);
CloseHandle(currentToken);
return 0;
}
这个示例代码会获取当前进程的访问令牌,并使用APICall GetTokenInformation来获取令牌信息。如果GetTokenInformation返回错误值,代码会打印相应的错误信息,并释放之前分配的内存和句柄。