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/*
Miranda NG: the free IM client for Microsoft* Windows*
Copyright (C) 2012-24 Miranda NG team (https://miranda-ng.org)
all portions of this codebase are copyrighted to the people
listed in contributors.txt.
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 2
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "stdafx.h"
DBSignature dbSignatureU = { "Miranda NG DBu", 0x1A }; // unencrypted database
DBSignature dbSignatureE = { "Miranda NG DBe", 0x1A }; // encrypted database
DBSignature dbSignatureIM = { "Miranda ICQ DB", 0x1A };
DBSignature dbSignatureSA = { "Miranda ICQ SA", 0x1A };
DBSignature dbSignatureSD = { "Miranda ICQ SD", 0x1A };
static int ModCompare(const ModuleName *mn1, const ModuleName *mn2)
{
return mir_strcmp(mn1->name, mn2->name);
}
static int OfsCompare(const ModuleName *mn1, const ModuleName *mn2)
{
return (mn1->ofs - mn2->ofs);
}
CDb3Mmap::CDb3Mmap(const wchar_t *tszFileName, int iMode) :
m_hDbFile(INVALID_HANDLE_VALUE),
m_safetyMode(true),
m_bReadOnly((iMode & DBMODE_READONLY) != 0),
m_bShared((iMode & DBMODE_SHARED) != 0),
m_dwMaxContactId(1),
m_lMods(50, ModCompare),
m_lOfs(50, OfsCompare)
{
m_tszProfileName = mir_wstrdup(tszFileName);
SYSTEM_INFO sinf;
GetSystemInfo(&sinf);
m_ChunkSize = sinf.dwAllocationGranularity;
m_hModHeap = HeapCreate(0, 0, 0);
}
CDb3Mmap::~CDb3Mmap()
{
g_Dbs.remove(this);
// destroy modules
HeapDestroy(m_hModHeap);
// destroy map
KillTimer(nullptr, m_flushBuffersTimerId);
if (m_pDbCache) {
FlushViewOfFile(m_pDbCache, 0);
UnmapViewOfFile(m_pDbCache);
}
DestroyServiceFunction(hService);
UnhookEvent(hHook);
if (m_hMap)
CloseHandle(m_hMap);
// update profile last modified time
if (!m_bReadOnly) {
DWORD bytesWritten;
SetFilePointer(m_hDbFile, 0, nullptr, FILE_BEGIN);
WriteFile(m_hDbFile, &dbSignatureU, 1, &bytesWritten, nullptr);
}
if (m_hDbFile != INVALID_HANDLE_VALUE)
CloseHandle(m_hDbFile);
mir_free(m_tszProfileName);
free(m_pNull);
}
int CDb3Mmap::Load(bool bSkipInit)
{
log0("DB logging running");
DWORD dummy = 0, dwMode = FILE_SHARE_READ;
if (m_bShared)
dwMode |= FILE_SHARE_WRITE;
if (m_bReadOnly)
m_hDbFile = CreateFile(m_tszProfileName, GENERIC_READ, dwMode, nullptr, OPEN_EXISTING, 0, nullptr);
else
m_hDbFile = CreateFile(m_tszProfileName, GENERIC_READ | GENERIC_WRITE, dwMode, nullptr, OPEN_ALWAYS, 0, nullptr);
if (m_hDbFile == INVALID_HANDLE_VALUE)
return EGROKPRF_CANTREAD;
if (!ReadFile(m_hDbFile, &m_dbHeader, sizeof(m_dbHeader), &dummy, nullptr)) {
CloseHandle(m_hDbFile);
return EGROKPRF_CANTREAD;
}
if (!bSkipInit) {
if (InitMap()) return 1;
if (InitModuleNames()) return 1;
if (InitCrypt()) return EGROKPRF_CANTREAD;
// everything is ok, go on
if (!m_bReadOnly)
if (m_dbHeader.version < DB_095_1_VERSION)
return EGROKPRF_CANTREAD;
FillContacts();
}
return ERROR_SUCCESS;
}
int CDb3Mmap::Create()
{
m_hDbFile = CreateFile(m_tszProfileName, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, nullptr, CREATE_ALWAYS, 0, nullptr);
return (m_hDbFile == INVALID_HANDLE_VALUE);
}
STDMETHODIMP_(void) CDb3Mmap::SetCacheSafetyMode(BOOL bIsSet)
{
{
mir_cslock lck(m_csDbAccess);
m_safetyMode = bIsSet != 0;
}
DBFlush(1);
}
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