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/*
dbx_tree: tree database driver for Miranda IM
Copyright 2007-2010 Michael "Protogenes" Kunz,
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.
*/
#pragma once
#ifndef _MSC_VER
#include <stdint.h>
#else
#include "stdint.h"
#endif
#include "MREWSync.h"
#include "Events.h"
#include "Settings.h"
#include "Entities.h"
#include "FileAccess.h"
#include "MappedMemory.h"
#include "DirectAccess.h"
#include "Blockmanager.h"
#include "sigslot.h"
#include "EncryptionManager.h"
typedef enum TDBFileType {
DBFileSetting = 0,
DBFilePrivate = 1,
DBFileMax = 2
} TDBFileType;
static const uint8_t cFileSignature[DBFileMax][20] = {"Miranda IM Settings", "Miranda IM DataTree"};
static const uint32_t cDBVersion = 0x00000001;
static const uint32_t cHeaderBlockSignature = 0x7265491E;
#pragma pack(push, 1) // push current alignment to stack, set alignment to 1 byte boundary
typedef struct TSettingsHeader {
uint8_t Signature[20]; /// signature must be cSettingsHeader
uint32_t Version; /// internal DB version cDataBaseVersion
uint32_t Obscure;
TFileEncryption FileEncryption; /// Encryption Method
uint32_t FileStructureBlock; /// Offset of CBlockManager master block
uint32_t FileSize; /// Offset to the last used byte + 1
uint32_t Settings; /// Offset to the SettingsBTree RootNode
uint8_t Reserved[256 - sizeof(TFileEncryption) - 20 - 5*sizeof(uint32_t)]; /// reserved storage
} TSettingsHeader;
typedef struct TPrivateHeader {
uint8_t Signature[20]; /// signature must be CDataHeader
uint32_t Version; /// internal DB version cDataBaseVersion
uint32_t Obscure;
TFileEncryption FileEncryption; /// Encryption Method
uint32_t FileStructureBlock; /// Offset of CBlockManager master block
uint32_t FileSize; /// Offset to the last used byte + 1
uint32_t RootEntity; /// Offset to the Root CList Entity
uint32_t Entities; /// Offset to the EntityBTree RootNode
uint32_t Virtuals; /// Offset to the VirtualsBTree RootNode
uint8_t Reserved[256 - sizeof(TFileEncryption) - 20 - 7*sizeof(uint32_t)]; /// reserved storage
} TPrivateHeader;
typedef union TGenericFileHeader {
struct {
uint8_t Signature[20]; /// signature must be cSettingsHeader
uint32_t Version; /// internal DB version cDataBaseVersion
uint32_t Obscure;
TFileEncryption FileEncryption; /// Encryption Method
uint32_t FileStructureBlock; /// Offset of CBlockManager master block
uint32_t FileSize; /// Offset to the last used byte + 1
uint8_t Reserved[256 - sizeof(TFileEncryption) - 20 - 4*sizeof(uint32_t)]; /// reserved storage
} Gen;
TSettingsHeader Set;
TPrivateHeader Pri;
} TGenericFileHeader;
#pragma pack(pop)
class CDataBase : public sigslot::has_slots<>
{
private:
TCHAR* m_FileName[DBFileMax];
bool m_Opened;
CBlockManager *m_BlockManager[DBFileMax];
CFileAccess *m_FileAccess[DBFileMax];
TGenericFileHeader * m_Header[DBFileMax];
CEncryptionManager *m_EncryptionManager[DBFileMax];
uint32_t m_HeaderBlock[DBFileMax];
void onSettingsRootChanged(CSettings* Settings, CSettingsTree::TNodeRef NewRoot);
void onVirtualsRootChanged(void* Virtuals, CVirtuals::TNodeRef NewRoot);
void onEntitiesRootChanged(void* Entities, CEntities::TNodeRef NewRoot);
void onFileSizeChanged(CFileAccess * File, uint32_t Size);
bool PrivateFileExists();
bool CreateNewFile(TDBFileType File);
int CheckFile(TDBFileType Index);
int LoadFile(TDBFileType Index);
protected:
CEntities *m_Entities;
CSettings *m_Settings;
CEvents *m_Events;
void ReWriteHeader(TDBFileType Index);
public:
CDataBase(const char* FileName);
virtual ~CDataBase();
int CreateDB();
int CheckDB();
int OpenDB();
CEntities & getEntities()
{
return *m_Entities;
}
CSettings & getSettings()
{
return *m_Settings;
}
CEvents & getEvents()
{
return *m_Events;
}
int getProfileName(int BufferSize, char * Buffer);
int getProfilePath(int BufferSize, char * Buffer);
};
extern CDataBase *gDataBase;
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