141 lines
3.9 KiB
C++
141 lines
3.9 KiB
C++
/*
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* Copyright 2004-2020 Sandboxie Holdings, LLC
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* Copyright 2021-2023 David Xanatos, xanasoft.com
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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//---------------------------------------------------------------------------
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// Protected Storage
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//---------------------------------------------------------------------------
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extern "C" {
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#include "dll.h"
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}
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#include <windows.h>
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#include "ipstore_impl.h"
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//---------------------------------------------------------------------------
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// Functions
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//---------------------------------------------------------------------------
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typedef HRESULT (*P_PStoreCreateInstance)(
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IPStore **ppProvider, PST_PROVIDERID *pProviderID,
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void *pReserved, DWORD dwFlags);
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static P_PStoreCreateInstance __sys_PStoreCreateInstance = NULL;
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static void *__sys_CoTaskMemAlloc = NULL;
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//---------------------------------------------------------------------------
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// Variables
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//---------------------------------------------------------------------------
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static const char *Pst_PStoreCreateInstanceProcName = "PStoreCreateInstance";
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//---------------------------------------------------------------------------
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// PStoreCreateInstance
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//---------------------------------------------------------------------------
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_FX HRESULT Pst_PStoreCreateInstance(
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IPStore **ppProvider,
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PST_PROVIDERID *pProviderID,
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void *pReserved,
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DWORD dwFlags)
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{
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if (! __sys_CoTaskMemAlloc) {
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HMODULE ole32 = GetModuleHandle(DllName_ole32_or_combase);
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__sys_CoTaskMemAlloc = GetProcAddress(ole32, "CoTaskMemAlloc");
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if (! __sys_CoTaskMemAlloc)
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return E_FAIL;
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}
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*ppProvider = new IPStoreImpl(__sys_CoTaskMemAlloc);
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return S_OK;
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}
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//---------------------------------------------------------------------------
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// Pst_Init
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//---------------------------------------------------------------------------
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extern "C" _FX BOOLEAN Pst_Init(HMODULE module)
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{
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P_PStoreCreateInstance PStoreCreateInstance;
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//
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// if OpenProtectedStorage is specified, don't hook anything
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//
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ULONG mp_flags = SbieDll_MatchPath(L'i', L"\\RPC Control\\protected_storage");
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if (PATH_IS_OPEN(mp_flags))
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return TRUE;
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//
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// in app mode we don't need these hooks as we have a full token
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//
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if (Dll_CompartmentMode)
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return TRUE;
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//
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// hook Protected Storage entry point
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//
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PStoreCreateInstance = (P_PStoreCreateInstance)
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GetProcAddress(module, Pst_PStoreCreateInstanceProcName);
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SBIEDLL_HOOK(Pst_,PStoreCreateInstance)
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return TRUE;
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}
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//---------------------------------------------------------------------------
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// SbieDll_InitPStore
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//---------------------------------------------------------------------------
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extern "C" void *SbieDll_InitPStore(void)
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{
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static const WCHAR *_pstorec = L"pstorec.dll";
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void *pst = NULL;
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HMODULE module = GetModuleHandle(_pstorec);
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if (! module)
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module = LoadLibrary(_pstorec);
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if (module) {
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P_PStoreCreateInstance pPStoreCreateInstance =
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(P_PStoreCreateInstance)
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GetProcAddress(module, Pst_PStoreCreateInstanceProcName);
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if (pPStoreCreateInstance) {
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HRESULT hr = pPStoreCreateInstance(
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(IPStore **)&pst, NULL, NULL, 0);
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if (hr != S_OK)
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pst = NULL;
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}
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}
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return pst;
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}
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