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/*
Miranda NG: the free IM client for Microsoft* Windows*
Copyright 2012-13 Miranda NG project,
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 "commonheaders.h"
int CDb3Base::InitCrypt()
{
CRYPTO_PROVIDER *pProvider;
DBVARIANT dbv = { 0 };
dbv.type = DBVT_ASCIIZ;
DBCONTACTGETSETTING dbcgs = { "CryptoEngine", "Provider", &dbv };
if (GetContactSettingStr(NULL, &dbcgs)) {
LBL_CreateProvider:
CRYPTO_PROVIDER **ppProvs;
int iNumProvs;
Crypto_EnumProviders(&iNumProvs, &ppProvs);
if (iNumProvs == 0)
return 1;
pProvider = ppProvs[0]; //!!!!!!!!!!!!!!!!!!
DBCONTACTWRITESETTING dbcws = { "CryptoEngine", "Provider" };
dbcws.value.type = DBVT_ASCIIZ;
dbcws.value.pszVal = pProvider->pszName;
WriteContactSetting(NULL, &dbcws);
}
else {
pProvider = Crypto_GetProvider(dbv.pszVal);
FreeVariant(&dbv);
if (pProvider == NULL)
goto LBL_CreateProvider;
}
if ((m_crypto = pProvider->pFactory()) == NULL)
return 3;
size_t iKeyLength = m_crypto->getKeyLength();
dbv.type = DBVT_BLOB;
dbcgs.szSetting = "StoredKey";
if (GetContactSetting(NULL, &dbcgs)) {
LBL_SetNewKey:
m_crypto->generateKey(); // unencrypted key
BYTE *pKey = (BYTE*)_alloca(iKeyLength);
m_crypto->getKey(pKey, iKeyLength);
DBCONTACTWRITESETTING dbcws = { "CryptoEngine", "StoredKey" };
dbcws.value.type = DBVT_BLOB;
dbcws.value.cpbVal = (WORD)iKeyLength;
dbcws.value.pbVal = pKey;
WriteContactSetting(NULL, &dbcws);
memset(pKey, 0, iKeyLength);
}
else {
if (dbv.cpbVal != (WORD)iKeyLength)
goto LBL_SetNewKey;
m_crypto->setKey(dbv.pbVal, iKeyLength);
FreeVariant(&dbv);
}
return 0;
}
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