如何在 Citrix 系统上获得用户的 UNIQUE window?
How can I get a UNIQUE window of the user on a Citrix system?
我正在创建一个将 运行 在 Citrix 上的应用程序,该应用程序将 运行 在多用户登录的计算机上。
场景如下:用户 A 登录到机器 1。用户 B 登录到机器 1 我们的程序在用户 A 登录时启动。用户 B 然后打开任何程序(我们正在监视)并且应该收到询问问题的对话。但是,不是用户 B 收到对话,而是用户 A 收到对话。
我怎样才能将我们的对话框显示给正确的用户?
我尝试将对话框设置为桌面,认为每个用户都有自己独特的桌面,但这没有用。 (参见 this )
如有任何建议/想法/示例,我们将不胜感激。
谢谢
事实证明,在 citrix 系统(和 windows OS)上,每个进程都与一个用户 SID 相关联。但是,在 citrix 系统上,当我设置 WMI 查询以监视特定进程时,我会收到与该进程交互的任何用户的通知。
所以我的应用程序不仅需要跟踪我感兴趣的进程,还需要跟踪与该进程交互的用户。
此代码找出谁拥有该进程:(当然,缺少的是检测进程 activity 并调用 'GetProcessOwnerInformation' 的代码,但这留作 reader :-) )
private ProcessOwnerInformation GetProcessOwnerInformation(uint processId)
{
WindowsIdentity _user = WindowsIdentity.GetCurrent();
string stringSID = string.Empty;
string process = ExGetProcessInfoByPID((int)processId, out stringSID);
bool bIgnoreCase = true;
ProcessOwnerInformation retval = new ProcessOwnerInformation();
bool bOwnsProcess = string.Compare(stringSID, _user.User.Value, bIgnoreCase) == 0;
if(bOwnsProcess)
{
retval.procID = processId;
retval.OwnsProcess = bOwnsProcess;
retval.SID = stringSID;
}
return retval;
}
public const int TOKEN_QUERY = 0X00000008;
const int ERROR_NO_MORE_ITEMS = 259;
enum TOKEN_INFORMATION_CLASS
{
TokenUser = 1,
TokenGroups,
TokenPrivileges,
TokenOwner,
TokenPrimaryGroup,
TokenDefaultDacl,
TokenSource,
TokenType,
TokenImpersonationLevel,
TokenStatistics,
TokenRestrictedSids,
TokenSessionId
}
[StructLayout(LayoutKind.Sequential)]
struct TOKEN_USER
{
public _SID_AND_ATTRIBUTES User;
}
[StructLayout(LayoutKind.Sequential)]
public struct _SID_AND_ATTRIBUTES
{
public IntPtr Sid;
public int Attributes;
}
[DllImport("advapi32")]
static extern bool OpenProcessToken(
IntPtr ProcessHandle, // handle to process
int DesiredAccess, // desired access to process
ref IntPtr TokenHandle // handle to open access token
);
[DllImport("kernel32")]
static extern IntPtr GetCurrentProcess();
[DllImport("advapi32", CharSet = CharSet.Auto)]
static extern bool GetTokenInformation(
IntPtr hToken,
TOKEN_INFORMATION_CLASS tokenInfoClass,
IntPtr TokenInformation,
int tokeInfoLength,
ref int reqLength
);
[DllImport("kernel32")]
static extern bool CloseHandle(IntPtr handle);
[DllImport("advapi32", CharSet = CharSet.Auto)]
static extern bool ConvertSidToStringSid(
IntPtr pSID,
[In, Out, MarshalAs(UnmanagedType.LPTStr)] ref string pStringSid
);
[DllImport("advapi32", CharSet = CharSet.Auto)]
static extern bool ConvertStringSidToSid(
[In, MarshalAs(UnmanagedType.LPTStr)] string pStringSid,
ref IntPtr pSID
);
public static bool DumpUserInfo(IntPtr pToken, out IntPtr SID)
{
int Access = TOKEN_QUERY;
IntPtr procToken = IntPtr.Zero;
bool ret = false;
SID = IntPtr.Zero;
try
{
if (OpenProcessToken(pToken, Access, ref procToken))
{
ret = ProcessTokenToSid(procToken, out SID);
CloseHandle(procToken);
}
return ret;
}
catch (Exception err)
{
return false;
}
}
private static bool ProcessTokenToSid(IntPtr token, out IntPtr SID)
{
TOKEN_USER tokUser;
const int bufLength = 256;
IntPtr tu = Marshal.AllocHGlobal(bufLength);
bool ret = false;
SID = IntPtr.Zero;
try
{
int cb = bufLength;
ret = GetTokenInformation(token, TOKEN_INFORMATION_CLASS.TokenUser, tu, cb, ref cb);
if (ret)
{
tokUser = (TOKEN_USER)Marshal.PtrToStructure(tu, typeof(TOKEN_USER));
SID = tokUser.User.Sid;
}
return ret;
}
catch (Exception err)
{
return false;
}
finally
{
Marshal.FreeHGlobal(tu);
}
}
public static string ExGetProcessInfoByPID(int PID, out string SID)//, out string OwnerSID)
{
IntPtr _SID = IntPtr.Zero;
SID = String.Empty;
try
{
Process process = Process.GetProcessById(PID);
if (DumpUserInfo(process.Handle, out _SID))
{
ConvertSidToStringSid(_SID, ref SID);
}
return process.ProcessName;
}
catch
{
return "Unknown";
}
}
我正在创建一个将 运行 在 Citrix 上的应用程序,该应用程序将 运行 在多用户登录的计算机上。
场景如下:用户 A 登录到机器 1。用户 B 登录到机器 1 我们的程序在用户 A 登录时启动。用户 B 然后打开任何程序(我们正在监视)并且应该收到询问问题的对话。但是,不是用户 B 收到对话,而是用户 A 收到对话。
我怎样才能将我们的对话框显示给正确的用户?
我尝试将对话框设置为桌面,认为每个用户都有自己独特的桌面,但这没有用。 (参见 this )
如有任何建议/想法/示例,我们将不胜感激。
谢谢
事实证明,在 citrix 系统(和 windows OS)上,每个进程都与一个用户 SID 相关联。但是,在 citrix 系统上,当我设置 WMI 查询以监视特定进程时,我会收到与该进程交互的任何用户的通知。
所以我的应用程序不仅需要跟踪我感兴趣的进程,还需要跟踪与该进程交互的用户。
此代码找出谁拥有该进程:(当然,缺少的是检测进程 activity 并调用 'GetProcessOwnerInformation' 的代码,但这留作 reader :-) )
private ProcessOwnerInformation GetProcessOwnerInformation(uint processId)
{
WindowsIdentity _user = WindowsIdentity.GetCurrent();
string stringSID = string.Empty;
string process = ExGetProcessInfoByPID((int)processId, out stringSID);
bool bIgnoreCase = true;
ProcessOwnerInformation retval = new ProcessOwnerInformation();
bool bOwnsProcess = string.Compare(stringSID, _user.User.Value, bIgnoreCase) == 0;
if(bOwnsProcess)
{
retval.procID = processId;
retval.OwnsProcess = bOwnsProcess;
retval.SID = stringSID;
}
return retval;
}
public const int TOKEN_QUERY = 0X00000008;
const int ERROR_NO_MORE_ITEMS = 259;
enum TOKEN_INFORMATION_CLASS
{
TokenUser = 1,
TokenGroups,
TokenPrivileges,
TokenOwner,
TokenPrimaryGroup,
TokenDefaultDacl,
TokenSource,
TokenType,
TokenImpersonationLevel,
TokenStatistics,
TokenRestrictedSids,
TokenSessionId
}
[StructLayout(LayoutKind.Sequential)]
struct TOKEN_USER
{
public _SID_AND_ATTRIBUTES User;
}
[StructLayout(LayoutKind.Sequential)]
public struct _SID_AND_ATTRIBUTES
{
public IntPtr Sid;
public int Attributes;
}
[DllImport("advapi32")]
static extern bool OpenProcessToken(
IntPtr ProcessHandle, // handle to process
int DesiredAccess, // desired access to process
ref IntPtr TokenHandle // handle to open access token
);
[DllImport("kernel32")]
static extern IntPtr GetCurrentProcess();
[DllImport("advapi32", CharSet = CharSet.Auto)]
static extern bool GetTokenInformation(
IntPtr hToken,
TOKEN_INFORMATION_CLASS tokenInfoClass,
IntPtr TokenInformation,
int tokeInfoLength,
ref int reqLength
);
[DllImport("kernel32")]
static extern bool CloseHandle(IntPtr handle);
[DllImport("advapi32", CharSet = CharSet.Auto)]
static extern bool ConvertSidToStringSid(
IntPtr pSID,
[In, Out, MarshalAs(UnmanagedType.LPTStr)] ref string pStringSid
);
[DllImport("advapi32", CharSet = CharSet.Auto)]
static extern bool ConvertStringSidToSid(
[In, MarshalAs(UnmanagedType.LPTStr)] string pStringSid,
ref IntPtr pSID
);
public static bool DumpUserInfo(IntPtr pToken, out IntPtr SID)
{
int Access = TOKEN_QUERY;
IntPtr procToken = IntPtr.Zero;
bool ret = false;
SID = IntPtr.Zero;
try
{
if (OpenProcessToken(pToken, Access, ref procToken))
{
ret = ProcessTokenToSid(procToken, out SID);
CloseHandle(procToken);
}
return ret;
}
catch (Exception err)
{
return false;
}
}
private static bool ProcessTokenToSid(IntPtr token, out IntPtr SID)
{
TOKEN_USER tokUser;
const int bufLength = 256;
IntPtr tu = Marshal.AllocHGlobal(bufLength);
bool ret = false;
SID = IntPtr.Zero;
try
{
int cb = bufLength;
ret = GetTokenInformation(token, TOKEN_INFORMATION_CLASS.TokenUser, tu, cb, ref cb);
if (ret)
{
tokUser = (TOKEN_USER)Marshal.PtrToStructure(tu, typeof(TOKEN_USER));
SID = tokUser.User.Sid;
}
return ret;
}
catch (Exception err)
{
return false;
}
finally
{
Marshal.FreeHGlobal(tu);
}
}
public static string ExGetProcessInfoByPID(int PID, out string SID)//, out string OwnerSID)
{
IntPtr _SID = IntPtr.Zero;
SID = String.Empty;
try
{
Process process = Process.GetProcessById(PID);
if (DumpUserInfo(process.Handle, out _SID))
{
ConvertSidToStringSid(_SID, ref SID);
}
return process.ProcessName;
}
catch
{
return "Unknown";
}
}