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/*
Miranda NG: the free IM client for Microsoft* Windows*
Copyright (c) 2012-18 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"
CDbxMDBX::CDbxMDBX(const TCHAR *tszFileName, int iMode) :
m_safetyMode(true),
m_bReadOnly((iMode & DBMODE_READONLY) != 0),
m_bShared((iMode & DBMODE_SHARED) != 0),
m_maxContactId(0)
{
m_tszProfileName = mir_wstrdup(tszFileName);
m_hwndTimer = CreateWindowExW(0, L"STATIC", nullptr, 0, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, HWND_DESKTOP, nullptr, g_hInst, nullptr);
::SetWindowLongPtr(m_hwndTimer, GWLP_USERDATA, (LONG_PTR)this);
mdbx_env_create(&m_env);
mdbx_env_set_maxdbs(m_env, 10);
mdbx_env_set_maxreaders(m_env, 244);
mdbx_env_set_userctx(m_env, this);
}
CDbxMDBX::~CDbxMDBX()
{
g_Dbs.remove(this);
mdbx_env_close(m_env);
::DestroyWindow(m_hwndTimer);
DestroyServiceFunction(hService);
UnhookEvent(hHook);
if (m_crypto)
m_crypto->destroy();
DestroyHookableEvent(hContactDeletedEvent);
DestroyHookableEvent(hContactAddedEvent);
DestroyHookableEvent(hSettingChangeEvent);
DestroyHookableEvent(hEventMarkedRead);
DestroyHookableEvent(hEventAddedEvent);
DestroyHookableEvent(hEventDeletedEvent);
DestroyHookableEvent(hEventFilterAddedEvent);
mir_free(m_tszProfileName);
}
int CDbxMDBX::Load(bool bSkipInit)
{
if (Map() != MDBX_SUCCESS)
return EGROKPRF_CANTREAD;
if (!bSkipInit) {
txn_ptr trnlck(StartTran());
unsigned int defFlags = MDBX_CREATE;
mdbx_dbi_open(trnlck, "global", defFlags | MDBX_INTEGERKEY, &m_dbGlobal);
mdbx_dbi_open(trnlck, "crypto", defFlags, &m_dbCrypto);
mdbx_dbi_open(trnlck, "contacts", defFlags | MDBX_INTEGERKEY, &m_dbContacts);
mdbx_dbi_open(trnlck, "modules", defFlags | MDBX_INTEGERKEY, &m_dbModules);
mdbx_dbi_open(trnlck, "events", defFlags | MDBX_INTEGERKEY, &m_dbEvents);
mdbx_dbi_open_ex(trnlck, "eventsrt", defFlags, &m_dbEventsSort, DBEventSortingKey::Compare, nullptr);
mdbx_dbi_open_ex(trnlck, "settings", defFlags, &m_dbSettings, DBSettingKey::Compare, nullptr);
{
uint32_t keyVal = 1;
MDBX_val key = { &keyVal, sizeof(keyVal) }, data;
if (mdbx_get(trnlck, m_dbGlobal, &key, &data) == MDBX_SUCCESS) {
const DBHeader *hdr = (const DBHeader*)data.iov_base;
if (hdr->dwSignature != DBHEADER_SIGNATURE)
return EGROKPRF_DAMAGED;
if (hdr->dwVersion != DBHEADER_VERSION)
return EGROKPRF_OBSOLETE;
m_header = *hdr;
}
else {
m_header.dwSignature = DBHEADER_SIGNATURE;
m_header.dwVersion = DBHEADER_VERSION;
data.iov_base = &m_header; data.iov_len = sizeof(m_header);
mdbx_put(trnlck, m_dbGlobal, &key, &data, 0);
DBFlush();
}
keyVal = 2;
if (mdbx_get(trnlck, m_dbGlobal, &key, &data) == MDBX_SUCCESS)
m_ccDummy.dbc = *(const DBContact*)data.iov_base;
trnlck.commit();
}
{
MDBX_val key, val;
mdbx_txn_begin(m_env, nullptr, MDBX_RDONLY, &m_txn_ro);
mdbx_cursor_open(m_txn_ro, m_dbEvents, &m_curEvents);
if (mdbx_cursor_get(m_curEvents, &key, &val, MDBX_LAST) == MDBX_SUCCESS)
m_dwMaxEventId = *(MEVENT*)key.iov_base;
mdbx_cursor_open(m_txn_ro, m_dbEventsSort, &m_curEventsSort);
mdbx_cursor_open(m_txn_ro, m_dbSettings, &m_curSettings);
mdbx_cursor_open(m_txn_ro, m_dbModules, &m_curModules);
mdbx_cursor_open(m_txn_ro, m_dbContacts, &m_curContacts);
if (mdbx_cursor_get(m_curContacts, &key, &val, MDBX_LAST) == MDBX_SUCCESS)
m_maxContactId = *(MCONTACT*)key.iov_base;
MDBX_stat st;
mdbx_dbi_stat(m_txn_ro, m_dbContacts, &st, sizeof(st));
m_contactCount = st.ms_entries;
mdbx_txn_reset(m_txn_ro);
}
if (InitModules()) return EGROKPRF_DAMAGED;
if (InitCrypt()) return EGROKPRF_DAMAGED;
// everything is ok, go on
if (!m_bReadOnly) {
// retrieve the event handles
hContactDeletedEvent = CreateHookableEvent(ME_DB_CONTACT_DELETED);
hContactAddedEvent = CreateHookableEvent(ME_DB_CONTACT_ADDED);
hSettingChangeEvent = CreateHookableEvent(ME_DB_CONTACT_SETTINGCHANGED);
hEventMarkedRead = CreateHookableEvent(ME_DB_EVENT_MARKED_READ);
hEventAddedEvent = CreateHookableEvent(ME_DB_EVENT_ADDED);
hEventDeletedEvent = CreateHookableEvent(ME_DB_EVENT_DELETED);
hEventFilterAddedEvent = CreateHookableEvent(ME_DB_EVENT_FILTER_ADD);
}
FillContacts();
}
return EGROKPRF_NOERROR;
}
int CDbxMDBX::Create(void)
{
return (Map() == MDBX_SUCCESS) ? 0 : EGROKPRF_CANTREAD;
}
size_t iDefHeaderOffset = 0;
BYTE bDefHeader[] = { 0 };
int CDbxMDBX::Check(void)
{
FILE *pFile = _wfopen(m_tszProfileName, L"rb");
if (pFile == nullptr)
return EGROKPRF_CANTREAD;
fseek(pFile, (LONG)iDefHeaderOffset, SEEK_SET);
BYTE buf[_countof(bDefHeader)];
size_t cbRead = fread(buf, 1, _countof(buf), pFile);
fclose(pFile);
if (cbRead != _countof(buf))
return EGROKPRF_DAMAGED;
return (memcmp(buf, bDefHeader, _countof(bDefHeader))) ? EGROKPRF_UNKHEADER : 0;
}
int CDbxMDBX::PrepareCheck()
{
InitModules();
return InitCrypt();
}
STDMETHODIMP_(void) CDbxMDBX::SetCacheSafetyMode(BOOL bIsSet)
{
m_safetyMode = bIsSet != 0;
DBFlush(true);
}
int CDbxMDBX::Map()
{
int rc = mdbx_env_set_geometry(m_env,
-1 /* minimal lower limit */,
64ul << 10 /* atleast 64K for now */,
256ul << 20 /* 256M upper limit */,
256ul << 10 /* 256K growth step */,
512ul << 10 /* 512K shrink threshold */,
-1 /* default page size */);
if (rc != MDBX_SUCCESS)
return rc;
unsigned int mode = MDBX_NOSUBDIR | MDBX_MAPASYNC | MDBX_WRITEMAP | MDBX_NOSYNC;
if (m_bReadOnly)
mode |= MDBX_RDONLY;
int exclusive = (m_bShared) ? 1 : 2;
return mdbx_env_open_ex(m_env, _T2A(m_tszProfileName), mode, 0664, &exclusive);
}
/////////////////////////////////////////////////////////////////////////////////////////
static VOID CALLBACK DoBufferFlushTimerProc(HWND hwnd, UINT, UINT_PTR idEvent, DWORD)
{
KillTimer(hwnd, idEvent);
CDbxMDBX *pDb = (CDbxMDBX *)GetWindowLongPtr(hwnd, GWLP_USERDATA);
if (pDb)
pDb->DBFlush(true);
}
void CDbxMDBX::DBFlush(bool bForce)
{
if (bForce) {
mdbx_env_sync(m_env, true);
}
else if (m_safetyMode) {
::KillTimer(m_hwndTimer, 1);
::SetTimer(m_hwndTimer, 1, 50, DoBufferFlushTimerProc);
}
}
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