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/*
Miranda Database Tool
Copyright (C) 2001-2005 Richard Hughes
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 "..\commonheaders.h"
int CDb3Base::WorkInitialCheckHeaders()
{
if (memcmp(m_dbHeader.signature, &dbSignatureU, sizeof(m_dbHeader.signature)) &&
memcmp(m_dbHeader.signature, &dbSignatureE, sizeof(m_dbHeader.signature)) &&
memcmp(m_dbHeader.signature, &dbSignatureIM, sizeof(m_dbHeader.signature)))
{
cb->pfnAddLogMessage(STATUS_FATAL, TranslateT("Database signature is corrupted, automatic repair is impossible"));
return ERROR_BAD_FORMAT;
}
if (m_dbHeader.version != DB_OLD_VERSION && m_dbHeader.version != DB_THIS_VERSION) {
cb->pfnAddLogMessage(STATUS_FATAL, TranslateT("Database is marked as belonging to an unknown version of Miranda"));
return ERROR_BAD_FORMAT;
}
return ERROR_SUCCESS;
}
int CDb3Base::WorkInitialChecks(int firstTime)
{
sourceFileSize = GetFileSize(m_hDbFile, NULL);
if (sourceFileSize == 0) {
cb->pfnAddLogMessage(STATUS_WARNING, TranslateT("Database is newly created and has no data to process"));
cb->pfnAddLogMessage(STATUS_SUCCESS, TranslateT("Processing completed successfully"));
return ERROR_INVALID_DATA;
}
int res = WorkInitialCheckHeaders();
if (res)
return res;
m_hMap = CreateFileMapping(m_hDbFile, NULL, cb->bAggressive ? PAGE_WRITECOPY : PAGE_READONLY, 0, 0, NULL);
if (m_hMap)
m_pDbCache = (BYTE*)MapViewOfFile(m_hMap, cb->bAggressive ? FILE_MAP_COPY : FILE_MAP_READ, 0, 0, 0);
else {
cb->pfnAddLogMessage(STATUS_FATAL, TranslateT("Can't create file mapping (%u)"), GetLastError());
return ERROR_ACCESS_DENIED;
}
if (!m_pDbCache) {
cb->pfnAddLogMessage(STATUS_FATAL, TranslateT("Can't create map view of file (%u)"), GetLastError());
return ERROR_ACCESS_DENIED;
}
if (ReadSegment(0, &m_dbHeader, sizeof(m_dbHeader)) != ERROR_SUCCESS)
return ERROR_READ_FAULT;
if (WriteSegment(0, &m_dbHeader, sizeof(m_dbHeader)) == WS_ERROR)
return ERROR_HANDLE_DISK_FULL;
cb->spaceUsed = m_dbHeader.ofsFileEnd - m_dbHeader.slackSpace;
m_dbHeader.ofsFileEnd = sizeof(m_dbHeader);
return ERROR_NO_MORE_ITEMS;
}
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