SOS! About API: Netsessiondel()

[Himao]

NET_API_STATUS NetSessionDel(
LPWSTR servername,
LPWSTR UncClientName,
LPWSTR username
);

How to set the second parameter when I want to delete a session with the Client name?

It seems it just could delete sessions with the username.

[golanshahar]

if you want to delete all session of the current user ( parameter 3) then the
UncClientName parameter can be null.

Cheers

[Himao]

Many thanks to you at first~

But I want to delete the client I choose.

I have a try with Netsessiondel(NULL,pTmpBuf->sesi10_cname,NULL)

And it returns error(NERR_ClientNameNotFound A session does not exist with that computer name )


I get value of pTmpBuf->sesi10_cname in example from MSDN

////////////////////////////////////////////////////////////////////////////////////////////////
// NetSession.cpp : 定义控制台应用程序的入口点。
//



#ifndef UNICODE
#define UNICODE
#endif
#include "stdafx.h"
#include <stdio.h>
#include <assert.h>
#include <windows.h>
#include <lm.h>

int wmain(int argc, wchar_t *argv[])
{
LPSESSION_INFO_10 pBuf = NULL;
LPSESSION_INFO_10 pTmpBuf;
DWORD dwLevel = 10;
DWORD dwPrefMaxLen = MAX_PREFERRED_LENGTH;
DWORD dwEntriesRead = 0;
DWORD dwTotalEntries = 0;
DWORD dwResumeHandle = 0;
DWORD i;
DWORD dwTotalCount = 0;
LPTSTR pszServerName = NULL;
LPTSTR pszClientName = NULL;
LPTSTR pszUserName = NULL;
NET_API_STATUS nStatus ,nStatu;;
//
// Check command line arguments.
//
if (argc > 4)
{
wprintf(L"Usage: %s [\\\\ServerName] [\\\\ClientName] [UserName]\n", argv[0]);
exit(1);
}

if (argc >= 2)
pszServerName = (LPTSTR)argv[1];

if (argc >= 3)
pszClientName = (LPTSTR)argv[2];

if (argc == 4)
pszUserName = (LPTSTR)argv[3];
//
// Call the NetSessionEnum function, specifying level 10.
//
do // begin do
{
nStatus = NetSessionEnum(pszServerName,
pszClientName,
pszUserName,
dwLevel,
(LPBYTE*)&pBuf,
dwPrefMaxLen,
&dwEntriesRead,
&dwTotalEntries,
&dwResumeHandle);
//
// If the call succeeds,
//
if ((nStatus == NERR_Success) || (nStatus == ERROR_MORE_DATA))
{
if ((pTmpBuf = pBuf) != NULL)
{
//
// Loop through the entries.
//
for (i = 0; (i < dwEntriesRead); i++)
{
assert(pTmpBuf != NULL);

if (pTmpBuf == NULL)
{
fprintf(stderr, "An access violation has occurred\n");
break;
}
//
// Print the retrieved data.
//
wprintf(L"\n\tClient: %s\n", pTmpBuf->sesi10_cname);
wprintf(L"\tUser: %s\n", pTmpBuf->sesi10_username);
printf("\tActive: %d\n", pTmpBuf->sesi10_time);
printf("\tIdle: %d\n", pTmpBuf->sesi10_idle_time);

nStatu = NetSessionDel(NULL,
pTmpBuf->sesi10_cname,
NULL);

if (nStatu == NERR_Success)
fprintf(stderr, "The specified session(s) has been successfully deleted\n");
else
fprintf(stderr, "A system error has occurred: %d\n", nStatu);

pTmpBuf++;
dwTotalCount++;
}
}
}
//
// Otherwise, indicate a system error.
//
else
fprintf(stderr, "A system error has occurred: %d\n", nStatus);
//
// Free the allocated memory.
//
if (pBuf != NULL)
{
NetApiBufferFree(pBuf);
pBuf = NULL;
}
}
//
// Continue to call NetSessionEnum while
// there are more entries.
//
while (nStatus == ERROR_MORE_DATA); // end do

// Check again for an allocated buffer.
//
if (pBuf != NULL)
NetApiBufferFree(pBuf);
//
// Print the final count of sessions enumerated.
//
fprintf(stderr, "\nTotal of %d entries enumerated\n", dwTotalCount);

return 0;
}

[golanshahar]

the fuction ::NetSessionDel(..) close the session between the server and the workstation.

in your code you called

Netsessiondel(NULL,pTmpBuf->sesi10_cname,NULL)

now that is wrong casue if provide NULL on the first paramter that mean u working on the local machine....i dont think this is what you want!

you should give the server name in the fisrt parameter

::Netsessiondel(L"my server name",pTmpBuf->sesi10_cname,NULL)

one more thing you must have an administartor rights for deleting a session

if i helped dont forget to rate :-)
Cheers

[Himao]

Thanks for your help~Code Master!

I want to disconnect a client that connect to my PC ~

when I delete the sessions with username~

All the other clients that connects to my pc with the username also are deleted~

I have been headache for several days ~555555555

For example:
there are two sessions to my pc~
1>
client : robot
user: administrator
...
2>
client : robot2
user: administrator
....

and now I want to delete the first session(robot1)~Not all sessions.

My server name is "Himao".

so what I should do?

PS:
I am a chinese student in middle school~

I will try to perfect my bad English~~~

[NoHero]

Doesn't...

NetSessionDel(S"\\\\.\\", S"\\\\robot", NULL);

... work? Try this without any other code... Because it would to be to strange if not...

[Himao]

Originally Posted by NoHero

NetSessionDel(S"\\\\.\\", S"\\\\robot", NULL);

Thank you ~

return error 53~~~

Gloomy~~~~~~~~~

[NoHero]

Error 53 means "Bad network path" So maybe one or both network path don't exist or are wrong.

[Himao]

I use NetSessionEnum() to get the sessions~

The console shell display the sessions which I used~

So the session must be exist~~

Where is wrong????

I should finish the work today~

Gloomy again~~~~~~

[NoHero]

I will test the code on my computers I will inform you on the results...

[NoHero]

Well ... this code worked perfect for me until I added the code which adds \\ before the client name (the code I speak of is highlighted). So without the \\ before the username it won't work.

#ifndef UNICODE
#define UNICODE
#endif

#include <stdio.h>
#include <assert.h>
#include <windows.h> 
#include <lm.h>

#pragma comment(lib, "Netapi32.lib")

int wmain(int argc, wchar_t *argv[])
{
   LPSESSION_INFO_10 pBuf = NULL;
   LPSESSION_INFO_10 pTmpBuf;
   DWORD dwLevel = 10;
   DWORD dwPrefMaxLen = -1;
   DWORD dwEntriesRead = 0;
   DWORD dwTotalEntries = 0;
   DWORD dwResumeHandle = 0;
   DWORD i;
   DWORD dwTotalCount = 0;
   LPTSTR pszServerName = NULL;
   LPTSTR pszClientName = NULL;
   LPTSTR pszUserName = NULL;
   NET_API_STATUS nStatus;
   //
   // Check command line arguments.
   //
   if (argc > 4)
   {
      wprintf(L"Usage: %s [\\\\ServerName] [\\\\ClientName] [UserName]\n", argv[0]);
      exit(1);
   }

   if (argc >= 2)
      pszServerName = argv[1];

   if (argc >= 3)
      pszClientName = argv[2];

   if (argc == 4)
      pszUserName = argv[3];
   //
   // Call the NetSessionEnum function, specifying level 10.
   //
   do // begin do
   { 
      nStatus = NetSessionEnum(pszServerName,
                               pszClientName,
                               pszUserName,
                               dwLevel,
                               (LPBYTE*)&pBuf,
                               dwPrefMaxLen,
                               &dwEntriesRead,
                               &dwTotalEntries,
                               &dwResumeHandle);
      //
      // If the call succeeds,
      //
      if ((nStatus == NERR_Success) || (nStatus == ERROR_MORE_DATA))
      {
         if ((pTmpBuf = pBuf) != NULL)
         {
            //
            // Loop through the entries.
            //
            for (i = 0; (i < dwEntriesRead); i++)
            {
			   NET_API_STATUS nRetVal = 0;
			   TCHAR sz[100] = L"";
               assert(pTmpBuf != NULL);

               if (pTmpBuf == NULL)
               {
                  fprintf(stderr, "An access violation has occurred\n");
                  break;
               }
               //
               // Print the retrieved data. 
               //
               wprintf(L"\n\tClient: %s\n", pTmpBuf->sesi10_cname);
               wprintf(L"\tUser:   %s\n", pTmpBuf->sesi10_username);
               wprintf(L"\tActive: %d\n", pTmpBuf->sesi10_time);
               wprintf(L"\tIdle:   %d\n", pTmpBuf->sesi10_idle_time);
				
			   
			   wsprintf(sz, L"\\\\%s", pTmpBuf->sesi10_cname);
			   nRetVal = NetSessionDel(NULL, sz, NULL);
			   if ( nRetVal != NERR_Success )
			   {
				   wprintf(L"\tKicking him..: Error #%d\n", GetLastError());
			   }
			   else
			   {
				   wprintf(L"\tI kicked his a**! :-)\n");
			   }

               pTmpBuf++;
               dwTotalCount++;
            }
         }
      }
      //
      // Otherwise, indicate a system error.
      //
      else
         fprintf(stderr, "A system error has occurred: %d\n", nStatus);
      //
      // Free the allocated memory.
      //
      if (pBuf != NULL)
      {
         NetApiBufferFree(pBuf);
         pBuf = NULL;
      }
   }
   // 
   // Continue to call NetSessionEnum while 
   //  there are more entries. 
   // 
   while (nStatus == ERROR_MORE_DATA); // end do

   // Check again for an allocated buffer.
   //
   if (pBuf != NULL)
      NetApiBufferFree(pBuf);
   //
   // Print the final count of sessions enumerated.
   //
   fprintf(stderr, "\nTotal of %d entries enumerated\n", dwTotalCount);

   return 0;
}

If I pass only the username via the third parameter it also worked like a charm.

/"mike" is the name of my second PC I used for testing

[Himao]

You are a "good" man~~

Thank you for your helping me~

I am online waitting for you result~~~~~~~~~~~~

I think it is the problem of parameter~

I test the function [netsessiondel] on control shell~

It deletes sessions successfully~

But now the new problem is How to translate the value "\\\\himao" to LPWSTR type~~~~~

[NoHero]

Originally Posted by Himao

I am online waitting for you result~~~~~~~~~~~~

Check my previous post

Originally Posted by Himao

But now the new problem is How to translate the value "\\\\himao" to LPWSTR type~~~~~

The string literal? Well just put an L before it. Orif you have "himao" somewhere in a variable just use wsprintf().:

TCHAR himao[] = S"himao";
TCHAR buff[100];

wsprintf(buff, S"\\\\%s", himao);
wprintf(buff);

[Himao]

OMG~~~~~~~~~~~~~~

I want to use it in MFC~~~

when I used the following code

TCHAR sz[100] = L"";
wsprintf(sz, L"\\\\%s", pTmpBuf->sesi10_cname);

There are two complier error~~~

1> couldn't convert const wchar_t[1] to TCHAR [100]
2> wsprintfA : couldn't convert the seccond parameter const wchar_t[5] to LPCSTR

[NoHero]

Have you changed the character set to use in your project properties section to Unicode? Or defined tha macro _UNICODE before including tchar header file?