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[KERNEL32] Implement NpGetUserNamep()

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This commit is contained in:
Pierre Schweitzer 2017-10-23 17:08:50 +02:00
parent f7932ba2de
commit 34c39a1336
1 changed files with 80 additions and 5 deletions
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85
dll/win32/kernel32/client/file/npipe.c
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@ -20,17 +20,92 @@ LONG ProcessPipeId;
/* FUNCTIONS ******************************************************************/
/*
* @implemented
*/
static
BOOL
NpGetUserNamep(HANDLE hNamedPipe,
LPWSTR lpUserName,
DWORD nMaxUserNameSize)
{
/* FIXME - open the thread token, call ImpersonateNamedPipeClient() and
retrieve the user name with GetUserName(), revert the impersonation
and finally restore the thread token */
UNIMPLEMENTED;
return TRUE;
BOOL Ret;
HANDLE hToken;
HMODULE hAdvapi;
NTSTATUS Status;
BOOL (WINAPI *pRevertToSelf)(void);
BOOL (WINAPI *pGetUserNameW)(LPWSTR lpBuffer, LPDWORD lpnSize);
BOOL (WINAPI *pImpersonateNamedPipeClient)(HANDLE hNamedPipe);
/* Open advapi, we'll funcs from it */
hAdvapi = LoadLibraryW(L"advapi32.dll");
if (hAdvapi == NULL)
{
return FALSE;
}
/* Import the three required functions */
pRevertToSelf = GetProcAddress(hAdvapi, "RevertToSelf");
pGetUserNameW = GetProcAddress(hAdvapi, "GetUserNameW");
pImpersonateNamedPipeClient = GetProcAddress(hAdvapi, "ImpersonateNamedPipeClient");
/* If any couldn't be found, fail */
if (pRevertToSelf == NULL || pGetUserNameW == NULL || pImpersonateNamedPipeClient == NULL)
{
FreeLibrary(hAdvapi);
return FALSE;
}
/* Now, open the thread token for impersonation */
Status = NtOpenThreadToken(NtCurrentThread(), TOKEN_IMPERSONATE, TRUE, &hToken);
/* Try to impersonate the pipe client */
if (pImpersonateNamedPipeClient(hNamedPipe))
{
DWORD lpnSize;
/* It worked, get the user name */
lpnSize = nMaxUserNameSize;
Ret = pGetUserNameW(lpUserName, &lpnSize);
/* Failed to get the thread token? Revert to self */
if (!NT_SUCCESS(Status))
{
pRevertToSelf();
FreeLibrary(hAdvapi);
return Ret;
}
/* Restore the thread token */
Status = NtSetInformationThread(NtCurrentThread(), ThreadImpersonationToken,
&hToken, sizeof(HANDLE));
/* We cannot fail closing the thread token! */
if (!CloseHandle(hToken))
{
ASSERT(FALSE);
}
/* Set last error if it failed */
if (!NT_SUCCESS(Status))
{
BaseSetLastNTError(Status);
}
}
else
{
/* If opening the thread token succeed, close it */
if (NT_SUCCESS(Status))
{
/* We cannot fail closing it! */
if (!CloseHandle(hToken))
{
ASSERT(FALSE);
}
}
Ret = FALSE;
}
FreeLibrary(hAdvapi);
return Ret;
}