C# 如何使用API调用重现quser.exe?
允许客户端查看远程RDP服务器上的用户会话。比如说,C# 如何使用API调用重现quser.exe?,c#,c++,.net,winapi,terminal-services,C#,C++,.net,Winapi,Terminal Services,允许客户端查看远程RDP服务器上的用户会话。比如说, C:\>quser /server:MyRDPserver USERNAME SESSIONNAME ID STATE IDLE TIME LOGON TIME userA 3 Disc 1+20:03 08/07/2014 12:36 userB
C:\>quser /server:MyRDPserver
USERNAME SESSIONNAME ID STATE IDLE TIME LOGON TIME
userA 3 Disc 1+20:03 08/07/2014 12:36
userB 4 Disc 1+22:28 08/07/2014 10:38
我想把这个功能构建成C++或C语言程序。是的,我可以生成quser.exe并解析输出,但是是否有Win32 API或.Net framework类可以提供相同的信息?具体而言:
- 用户名
- 连接状态
- 登录时间
我发现使用WMI(Win32_LoggedOnUser)查找相同的信息是不可靠的,因为它经常列出过时的连接。我也尝试过枚举HKEY_用户的子键并查找Volatile环境键的方法,但这也遇到了同样的问题。您可以调用Win32 API来创建进程并将“quser/server:MyRDPserver”作为参数传递,我通常这样做:
PROCESS_INFORMATION process_info;
STARTUPINFOA startup_info;
string cmdline2;
char error_msg[1024];
memset(&process_info, 0, sizeof(process_info));
memset(&startup_info, 0, sizeof(startup_info));
startup_info.cb = sizeof(startup_info);
argc = argarray.size();
for(int i = 0; i < argc; i++) {
cmdline2 += argarray.at(i);
if(i != (argc - 1)) cmdline2 += " ";
}
string command = suCmdLineRemoveQuotations(argarray.at(0));
retval = CreateProcessA(command.c_str(), (LPSTR)cmdline2.c_str(), NULL, NULL, TRUE,
0, NULL, NULL, &startup_info, &process_info);
if (!retval) {
windows_error_string(error_msg, sizeof(error_msg));
error = error_msg;
return false;
}
WaitForSingleObject(process_info.hProcess, msecs);
if(GetExitCodeProcess(process_info.hProcess, &status)) {
// status maybe is STILL_ACTIVE, in that case, the process is killed
if(status == STILL_ACTIVE) {
TerminateProcess(process_info.hProcess, 1);
}
ecode = status;
}
return true;
PROCESS\u INFORMATION PROCESS\u INFORMATION;
STARTUPINFOA启动信息;
字符串cmdline2;
字符错误消息[1024];
memset(&process_info,0,sizeof(process_info));
memset(&startup_info,0,sizeof(startup_info));
startup_info.cb=sizeof(startup_info);
argc=argarray.size();
对于(int i=0;i
当进程启动时,您可以重定向输出。如果使用Qt,问题就会变得简单,您可以使用QProcess来实现。我将回答我自己的问题 首先,您需要确保在目标计算机上正确设置了权限。这需要将HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\AllowRemoteRPC设置为1。执行此操作的powershell脚本是:
# Get the service account credential
$cred = Get-Credential my_admin_account
$Target_Computers = @("Computer_1","Computer_2")
# open the remote registry
[long]$HIVE_HKLM = 2147483650
foreach($c in $Target_Computers)
{
$StdRegProv = Get-WmiObject -List -Namespace root\default -ComputerName $c -Credential $cred | where { $_.Name -eq "StdRegProv" }
$StdRegProv.SetDWORDValue($HIVE_HKLM, "SYSTEM\CurrentControlSet\Control\Terminal Server", "AllowRemoteRPC", 1)
}
正如Xearinox所说,对于C++,可以使用Win32 API中的WTSXXX函数。假设你的计算机不是XP,这里有一些C++代码:
#include <string>
#include <iostream>
#include <iomanip>
#include <windows.h>
#include <WtsApi32.h>
using namespace std;
const unsigned num_connection_states = 10;
const wchar_t* connection_state_list[num_connection_states] = {
L"Active",
L"Connected",
L"ConnectQuery",
L"Shadow",
L"Disc",
L"Idle",
L"Listen",
L"Reset",
L"Down",
L"Init" };
int print_error(DWORD err)
{
// format the message
LPTSTR* ppBuffer = nullptr;
DWORD retval = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER, nullptr, err, 0, reinterpret_cast<LPTSTR>(ppBuffer), 0, nullptr);
// print out
wcerr << "Error: *ppBuffer" << endl;
return 1;
}
wstring format_time(const LARGE_INTEGER& time)
{
// convert to a local Win32 file time
FILETIME ft = { time.LowPart, time.HighPart };
FileTimeToLocalFileTime( &ft, &ft );
// convert to a system time
SYSTEMTIME st;
FileTimeToSystemTime( &ft, &st );
wchar_t local_date[255], local_time[255];
GetDateFormat( LOCALE_USER_DEFAULT, DATE_SHORTDATE, &st, NULL, local_date, sizeof(local_date)/sizeof(wchar_t) );
GetTimeFormat( LOCALE_USER_DEFAULT, TIME_NOSECONDS, &st, NULL, local_time, sizeof(local_time)/sizeof(wchar_t) );
wstring result = local_date;
result.append(L" ");
result.append(local_time);
return result;
}
const _int64 SECOND = 10000000;
const _int64 MINUTE = 60*SECOND;
const _int64 HOUR = 60*MINUTE;
const _int64 DAY = 24*HOUR;
wstring format_timespan(const LARGE_INTEGER& timespan)
{
// convert to a local Win32 file time
FILETIME ft = { timespan.LowPart, timespan.HighPart };
FileTimeToLocalFileTime( &ft, &ft );
// convert to a system time
SYSTEMTIME st;
FileTimeToSystemTime( &ft, &st );
wchar_t local_time[255];
int daydiff = floor(
GetTimeFormat( LOCALE_USER_DEFAULT, TIME_NOSECONDS, &st, NULL, local_time, sizeof(local_time)/sizeof(wchar_t) );
wstring result = local_date;
result.append(L" ");
result.append(local_time);
return result;
}
int wmain(int argc, wchar_t* argv[])
{
// check args
if(argc > 2)
{
wcout << "Usage: " << argv[0] << " [server_name]\n";
return 1;
}
// server name
bool current_server = true;
wstring server_name = L".";
if(argc == 2)
{
server_name = argv[1];
current_server = false;
}
// open the server
HANDLE hServer;
if(current_server)
hServer = WTS_CURRENT_SERVER_HANDLE;
else
hServer = WTSOpenServer(const_cast<LPWSTR>(server_name.c_str()));
// enumerate through the sessions
DWORD Count = 0;
WTS_SESSION_INFO* pSessionInfo = nullptr;
BOOL success = WTSEnumerateSessions(hServer, 0, 1, &pSessionInfo, &Count);
if(success == 0)
return false;
// write the headers
wcout << " " << left << setw(24) << "USERNAME";
wcout << setw(19) << "SESSIONNAME";
wcout << "ID ";
wcout << setw(9) << "STATE";
wcout << "IDLE TIME LOGON TIME";
// loop through each session
for(unsigned long s=0; s<Count; s++)
{
LPTSTR pBuffer = nullptr;
DWORD BytesReturned = 0;
wcout << "\n " << left;
// try getting all info at once
WTSINFO* info = nullptr;
success = WTSQuerySessionInformation(hServer, pSessionInfo[s].SessionId, WTSSessionInfo, reinterpret_cast<LPTSTR*>(&info), &BytesReturned);
bool have_wtsinfo = true;
if(!success)
{
// see why failed
DWORD err = GetLastError();
if(err == ERROR_NOT_SUPPORTED)
have_wtsinfo = false;
else
return print_error(err);
}
// print user name
wstring user_name;
if(have_wtsinfo)
user_name = info->UserName;
else
{
success = WTSQuerySessionInformation(hServer, pSessionInfo[s].SessionId, WTSUserName, &pBuffer, &BytesReturned);
if(!success)
continue;
user_name = pBuffer;
WTSFreeMemory(pBuffer);
}
wcout << setw(24) << user_name;
// print session name
wstring session_name;
if(have_wtsinfo)
session_name = info->WinStationName;
else
{
success = WTSQuerySessionInformation(hServer, pSessionInfo[s].SessionId, WTSWinStationName, &pBuffer, &BytesReturned);
if(!success)
continue;
session_name = pBuffer;
WTSFreeMemory(pBuffer);
}
wcout << setw(19) << session_name;
// print session ID
wcout << right << setw(2) << pSessionInfo[s].SessionId;
// print connection state
WTS_CONNECTSTATE_CLASS connect_state;
if(have_wtsinfo)
connect_state = info->State;
else
{
success = WTSQuerySessionInformation(hServer, pSessionInfo[s].SessionId, WTSConnectState, &pBuffer, &BytesReturned);
if(!success)
continue;
connect_state = *reinterpret_cast<WTS_CONNECTSTATE_CLASS*>(pBuffer);
WTSFreeMemory(pBuffer);
}
if(connect_state>=num_connection_states)
continue;
wcout << " " << left << setw(8) << connection_state_list[connect_state];
// get idle time
LARGE_INTEGER idle = info->CurrentTime;
idle.QuadPart -= info->LogonTime.QuadPart;
// print logon time - not supported
if(info->LogonTime.QuadPart!=0)
{
wcout << format_time(info->LogonTime);
}
// clean up
WTSFreeMemory(info);
}
// clean up
WTSFreeMemory(pSessionInfo);
if(!current_server)
WTSCloseServer(hServer);
}
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使用名称空间std;
const unsigned num_connection_states=10;
const wchar_t*连接状态列表[num_连接状态]={
L“活动”,
L“已连接”,
L“连接查询”,
L“影子”,
L“光盘”,
L“空闲”,
我“听着”,
L“重置”,
L“向下”,
L“Init”};
整数打印错误(DWORD err)
{
//格式化消息
LPTSTR*ppBuffer=nullptr;
DWORD retval=FormatMessage(格式化消息分配缓冲区,nullptr,err,0,重新解释转换(ppBuffer),0,nullptr);
//打印出来
wcerr可能WTS函数可以帮助您。我已经想到了这一点,但我要寻找的是关于如何使用与quser.exe相同的API函数的信息