Sandboxie/Sandboxie/core/dll/sfc.c

124 lines
3.8 KiB
C

/*
* Copyright 2004-2020 Sandboxie Holdings, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
//---------------------------------------------------------------------------
// Windows File Protection
//---------------------------------------------------------------------------
#include "dll.h"
//---------------------------------------------------------------------------
// Functions
//---------------------------------------------------------------------------
static BOOL Sfc_SfcIsFileProtected(HANDLE RpcHandle, LPCWSTR *FileName);
static BOOL Sfc_SfcIsKeyProtected(HKEY hKey, LPCWSTR lpSubKey, REGSAM sam);
static BOOL Sfc_SfcGetNextProtectedFile(HANDLE RpcHandle, void *FileData);
//---------------------------------------------------------------------------
typedef BOOL (*P_SfcIsFileProtected)(HANDLE RpcHandle, LPCWSTR *FileName);
typedef BOOL (*P_SfcIsKeyProtected)(HKEY hKey, LPCWSTR lpSubKey, REGSAM sam);
typedef BOOL (*P_SfcGetNextProtectedFile)(HANDLE RpcHandle, void *FileData);
//---------------------------------------------------------------------------
static P_SfcIsFileProtected __sys_SfcIsFileProtected = NULL;
static P_SfcIsKeyProtected __sys_SfcIsKeyProtected = NULL;
static P_SfcGetNextProtectedFile __sys_SfcGetNextProtectedFile = NULL;
//---------------------------------------------------------------------------
// Sfc_Init
//---------------------------------------------------------------------------
_FX BOOLEAN Sfc_Init(HMODULE module)
{
void *SfcIsFileProtected, *SfcIsKeyProtected, *SfcGetNextProtectedFile;
//
// intercept SECUR32 entry points
//
SfcIsFileProtected = (P_SfcIsFileProtected)
GetProcAddress(module, "SfcIsFileProtected");
SfcIsKeyProtected = (P_SfcIsKeyProtected)
GetProcAddress(module, "SfcIsKeyProtected");
SfcGetNextProtectedFile = (P_SfcGetNextProtectedFile)
GetProcAddress(module, "SfcGetNextProtectedFile");
if (SfcIsFileProtected) {
SBIEDLL_HOOK(Sfc_,SfcIsFileProtected);
}
if (SfcIsKeyProtected) {
SBIEDLL_HOOK(Sfc_,SfcIsKeyProtected);
}
if (SfcGetNextProtectedFile) {
SBIEDLL_HOOK(Sfc_,SfcGetNextProtectedFile);
}
return TRUE;
}
//---------------------------------------------------------------------------
// Sfc_SfcIsFileProtected
//---------------------------------------------------------------------------
_FX BOOL Sfc_SfcIsFileProtected(HANDLE RpcHandle, LPCWSTR *FileName)
{
SetLastError(ERROR_FILE_NOT_FOUND);
return FALSE;
}
//---------------------------------------------------------------------------
// Sfc_SfcIsKeyProtected
//---------------------------------------------------------------------------
_FX BOOL Sfc_SfcIsKeyProtected(HKEY hKey, LPCWSTR lpSubKey, REGSAM sam)
{
SetLastError(ERROR_FILE_NOT_FOUND);
return FALSE;
}
//---------------------------------------------------------------------------
// Sfc_SfcGetNextProtectedFile
//---------------------------------------------------------------------------
_FX BOOL Sfc_SfcGetNextProtectedFile(HANDLE RpcHandle, void *FileData)
{
SetLastError(ERROR_NO_MORE_FILES);
return FALSE;
}