reactos/dll/win32/authz/resman.c

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/*
* ReactOS Authorization Framework
* Copyright (C) 2005 - 2006 ReactOS Team
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* PROJECT: ReactOS Authorization Framework
* FILE: lib/authz/resman.c
* PURPOSE: Authorization Framework
* PROGRAMMER: Thomas Weidenmueller <w3seek@reactos.com>
*
* UPDATE HISTORY:
* 10/07/2005 Created
*/
#include "precomp.h"
#define NDEBUG
#include <debug.h>
static BOOL
AuthzpQueryToken(IN OUT PAUTHZ_RESMAN ResMan,
IN HANDLE hToken)
{
TOKEN_USER User;
TOKEN_STATISTICS Statistics;
DWORD BufLen;
PSID UserSid = NULL;
BOOL Ret = FALSE;
/* query information about the user */
BufLen = sizeof(User);
Ret = GetTokenInformation(hToken,
TokenUser,
&User,
BufLen,
&BufLen);
if (Ret)
{
BufLen = GetLengthSid(User.User.Sid);
if (BufLen != 0)
{
UserSid = (PSID)LocalAlloc(LMEM_FIXED,
BufLen);
if (UserSid != NULL)
{
CopyMemory(UserSid,
User.User.Sid,
BufLen);
}
else
Ret = FALSE;
}
else
Ret = FALSE;
}
if (Ret)
{
/* query general information */
BufLen = sizeof(Statistics);
Ret = GetTokenInformation(hToken,
TokenUser,
&Statistics,
BufLen,
&BufLen);
}
if (Ret)
{
ResMan->UserSid = UserSid;
ResMan->AuthenticationId = Statistics.AuthenticationId;
Ret = TRUE;
}
else
{
if (UserSid != NULL)
{
LocalFree((HLOCAL)UserSid);
}
}
return Ret;
}
static BOOL
AuthzpInitUnderImpersonation(IN OUT PAUTHZ_RESMAN ResMan)
{
HANDLE hToken;
BOOL Ret;
Ret = OpenThreadToken(GetCurrentThread(),
TOKEN_QUERY,
TRUE,
&hToken);
if (Ret)
{
Ret = AuthzpQueryToken(ResMan,
hToken);
CloseHandle(hToken);
}
return Ret;
}
static BOOL
AuthzpInitSelf(IN OUT PAUTHZ_RESMAN ResMan)
{
HANDLE hToken;
BOOL Ret;
Ret = OpenProcessToken(GetCurrentProcess(),
TOKEN_QUERY,
&hToken);
if (Ret)
{
Ret = AuthzpQueryToken(ResMan,
hToken);
CloseHandle(hToken);
}
return Ret;
}
/*
* @unimplemented
*/
AUTHZAPI
BOOL
WINAPI
AuthzInitializeResourceManager(IN DWORD flags,
IN PFN_AUTHZ_DYNAMIC_ACCESS_CHECK pfnAccessCheck OPTIONAL,
IN PFN_AUTHZ_COMPUTE_DYNAMIC_GROUPS pfnComputeDynamicGroups OPTIONAL,
IN PFN_AUTHZ_FREE_DYNAMIC_GROUPS pfnFreeDynamicGroups OPTIONAL,
IN PCWSTR ResourceManagerName OPTIONAL,
IN PAUTHZ_RESOURCE_MANAGER_HANDLE pAuthzResourceManager)
{
BOOL Ret = FALSE;
if (pAuthzResourceManager != NULL &&
!(flags & ~(AUTHZ_RM_FLAG_NO_AUDIT | AUTHZ_RM_FLAG_INITIALIZE_UNDER_IMPERSONATION)))
{
PAUTHZ_RESMAN ResMan;
SIZE_T RequiredSize = sizeof(AUTHZ_RESMAN);
if (ResourceManagerName != NULL)
{
RequiredSize += wcslen(ResourceManagerName) * sizeof(WCHAR);
}
ResMan = (PAUTHZ_RESMAN)LocalAlloc(LMEM_FIXED,
RequiredSize);
if (ResMan != NULL)
{
/* initialize the resource manager structure */
#if DBG
ResMan->Tag = RESMAN_TAG;
#endif
ResMan->flags = flags;
ResMan->UserSid = NULL;
if (ResourceManagerName != NULL)
{
wcscpy(ResMan->ResourceManagerName,
ResourceManagerName);
}
else
ResMan->ResourceManagerName[0] = UNICODE_NULL;
ResMan->pfnAccessCheck = pfnAccessCheck;
ResMan->pfnComputeDynamicGroups = pfnComputeDynamicGroups;
ResMan->pfnFreeDynamicGroups = pfnFreeDynamicGroups;
if (!(flags & AUTHZ_RM_FLAG_NO_AUDIT))
{
/* FIXME - initialize auditing */
DPRINT1("Auditing not implemented!\n");
}
if (flags & AUTHZ_RM_FLAG_INITIALIZE_UNDER_IMPERSONATION)
{
Ret = AuthzpInitUnderImpersonation(ResMan);
}
else
{
Ret = AuthzpInitSelf(ResMan);
}
if (Ret)
{
/* finally return the handle */
*pAuthzResourceManager = (AUTHZ_RESOURCE_MANAGER_HANDLE)ResMan;
}
else
{
DPRINT1("Querying the token failed!\n");
LocalFree((HLOCAL)ResMan);
}
}
}
else
SetLastError(ERROR_INVALID_PARAMETER);
return Ret;
}
/*
* @unimplemented
*/
AUTHZAPI
BOOL
WINAPI
AuthzFreeResourceManager(IN AUTHZ_RESOURCE_MANAGER_HANDLE AuthzResourceManager)
{
BOOL Ret = FALSE;
if (AuthzResourceManager != NULL)
{
PAUTHZ_RESMAN ResMan = (PAUTHZ_RESMAN)AuthzResourceManager;
VALIDATE_RESMAN_HANDLE(AuthzResourceManager);
if (!(ResMan->flags & AUTHZ_RM_FLAG_NO_AUDIT))
{
/* FIXME - cleanup auditing */
}
if (ResMan->UserSid != NULL)
{
LocalFree((HLOCAL)ResMan->UserSid);
}
LocalFree((HLOCAL)AuthzResourceManager);
Ret = TRUE;
}
else
SetLastError(ERROR_INVALID_PARAMETER);
return Ret;
}