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/*
* Copyright (c) 2014 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* @file db-crypto.h
* @author Zofia Abramowska (z.abramowska@samsung.com)
* @version 1.0
* @brief Header of encrypted db access layer
*/
#ifndef DB_CRYPTO_H
#define DB_CRYPTO_H
#include <vector>
#include <string>
#include <dpl/db/sql_connection.h>
#include <ckm/ckm-type.h>
#include <db-row.h>
#include <protocols.h>
#pragma GCC diagnostic push
#pragma GCC diagnostic warning "-Wdeprecated-declarations"
namespace CKM {
class DBCrypto {
public:
typedef boost::optional<DBRow> DBRowOptional;
typedef boost::optional<SafeBuffer> SafeBufferOptional;
class Exception
{
public:
DECLARE_EXCEPTION_TYPE(CKM::Exception, Base)
DECLARE_EXCEPTION_TYPE(Base, AliasExists)
DECLARE_EXCEPTION_TYPE(Base, InternalError)
DECLARE_EXCEPTION_TYPE(Base, TransactionError)
};
DBCrypto() :
m_connection(NULL),
m_inUserTransaction(false)
{};
//user name instead of path?
DBCrypto(const std::string &path, const SafeBuffer &rawPass);
DBCrypto(const DBCrypto &other) = delete;
DBCrypto(DBCrypto &&other);
DBCrypto& operator=(const DBCrypto& ) = delete;
DBCrypto& operator=(DBCrypto&& other);
virtual ~DBCrypto();
void saveDBRow(const DBRow &row);
DBRowOptional getDBRow(
const Alias &alias,
const std::string &label,
DBDataType type);
DBRowOptional getKeyDBRow(
const Alias &alias,
const std::string &label);
void getAliases(
DBDataType dataType,
const std::string &label,
AliasVector &aliases);
void getKeyAliases(
const std::string &label,
AliasVector &aliases);
void deleteDBRow(
const Alias& alias,
const std::string &label);
void saveKey(const std::string& label, const SafeBuffer &key);
SafeBufferOptional getKey(
const std::string& label);
void deleteKey(const std::string& label);
int beginTransaction();
int commitTransaction();
int rollbackTransaction();
class Transaction {
public:
Transaction(DBCrypto *db)
: m_db(db),
m_inTransaction(false) {
if(!m_db->m_inUserTransaction) {
Try {
m_db->m_connection->ExecCommand("BEGIN EXCLUSIVE");
m_db->m_inUserTransaction = true;
m_inTransaction = true;
} Catch (DB::SqlConnection::Exception::Base) {
LogError("Couldn't begin transaction");
ReThrow(DBCrypto::Exception::TransactionError);
}
}
}
void commit() {
if(m_inTransaction) {
Try {
m_db->m_connection->CommitTransaction();
m_db->m_inUserTransaction = false;
m_inTransaction = false;
} Catch (DB::SqlConnection::Exception::Base) {
LogError("Couldn't commit transaction");
ReThrow(DBCrypto::Exception::TransactionError);
}
}
}
void rollback() {
if(m_inTransaction) {
Try {
m_db->m_connection->RollbackTransaction();
m_db->m_inUserTransaction = false;
m_inTransaction = false;
} Catch (DB::SqlConnection::Exception::Base) {
LogError("Couldn't rollback transaction");
ReThrow(DBCrypto::Exception::TransactionError);
}
}
}
~Transaction() {
Try {
if(m_inTransaction) {
m_db->m_inUserTransaction = false;
m_db->m_connection->RollbackTransaction();
}
} Catch (DB::SqlConnection::Exception::Base) {
LogError("Transaction rollback failed!");
}
}
private:
DBCrypto *m_db;
bool m_inTransaction;
};
private:
DB::SqlConnection* m_connection;
bool m_inUserTransaction;
void initDatabase();
DBRow getRow(const DB::SqlConnection::DataCommandUniquePtr &selectCommand);
void createTable(
const char *create_cmd,
const char *table_name);
bool checkAliasExist(
const std::string &alias,
const std::string &label);
bool checkGlobalAliasExist(const std::string& alias);
void getSingleType(
DBDataType type,
const std::string& label,
AliasVector& aliases);
};
} // namespace CKM
#pragma GCC diagnostic pop
#endif //DB_CRYPTO_H
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