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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#if USE_LEVELDB
#include "database-leveldb.h"
#include "log.h"
#include "filesys.h"
#include "exceptions.h"
#include "util/serialize.h"
#include "util/string.h"
#include "leveldb/db.h"
#define ENSURE_STATUS_OK(s) \
if (!(s).ok()) { \
throw DatabaseException(std::string("LevelDB error: ") + \
(s).ToString()); \
}
Database_LevelDB::Database_LevelDB(const std::string &savedir)
{
leveldb::Options options;
options.create_if_missing = true;
leveldb::Status status = leveldb::DB::Open(options,
savedir + DIR_DELIM + "map.db", &m_database);
ENSURE_STATUS_OK(status);
}
Database_LevelDB::~Database_LevelDB()
{
delete m_database;
}
bool Database_LevelDB::saveBlock(const v3s16 &pos, const std::string &data)
{
leveldb::Status status = m_database->Put(leveldb::WriteOptions(),
i64tos(getBlockAsInteger(pos)), data);
if (!status.ok()) {
warningstream << "saveBlock: LevelDB error saving block "
<< PP(pos) << ": " << status.ToString() << std::endl;
return false;
}
return true;
}
void Database_LevelDB::loadBlock(const v3s16 &pos, std::string *block)
{
std::string datastr;
leveldb::Status status = m_database->Get(leveldb::ReadOptions(),
i64tos(getBlockAsInteger(pos)), &datastr);
*block = (status.ok()) ? datastr : "";
}
bool Database_LevelDB::deleteBlock(const v3s16 &pos)
{
leveldb::Status status = m_database->Delete(leveldb::WriteOptions(),
i64tos(getBlockAsInteger(pos)));
if (!status.ok()) {
warningstream << "deleteBlock: LevelDB error deleting block "
<< PP(pos) << ": " << status.ToString() << std::endl;
return false;
}
return true;
}
void Database_LevelDB::listAllLoadableBlocks(std::vector<v3s16> &dst)
{
leveldb::Iterator* it = m_database->NewIterator(leveldb::ReadOptions());
for (it->SeekToFirst(); it->Valid(); it->Next()) {
dst.push_back(getIntegerAsBlock(stoi64(it->key().ToString())));
}
ENSURE_STATUS_OK(it->status()); // Check for any errors found during the scan
delete it;
}
AuthDatabaseLevelDB::AuthDatabaseLevelDB(const std::string &savedir)
{
leveldb::Options options;
options.create_if_missing = true;
leveldb::Status status = leveldb::DB::Open(options,
savedir + DIR_DELIM + "auth.db", &m_database);
ENSURE_STATUS_OK(status);
}
AuthDatabaseLevelDB::~AuthDatabaseLevelDB()
{
delete m_database;
}
bool AuthDatabaseLevelDB::getAuth(const std::string &name, AuthEntry &res)
{
std::string raw;
leveldb::Status s = m_database->Get(leveldb::ReadOptions(), name, &raw);
if (!s.ok())
return false;
std::istringstream is(raw);
/*
u8 version = 1
std::string password
u16 number of privileges
for each privilege {
std::string privilege
}
s64 last_login
*/
if (readU8(is) > 1)
return false;
res.id = 1;
res.name = name;
res.password = deSerializeString(is);
u16 privilege_count = readU16(is);
res.privileges.clear();
res.privileges.reserve(privilege_count);
for (u16 i = 0; i < privilege_count; i++) {
res.privileges.push_back(deSerializeString(is));
}
res.last_login = readS64(is);
return true;
}
bool AuthDatabaseLevelDB::saveAuth(const AuthEntry &authEntry)
{
std::ostringstream os;
writeU8(os, 1);
os << serializeString(authEntry.password);
size_t privilege_count = authEntry.privileges.size();
FATAL_ERROR_IF(privilege_count > U16_MAX,
"Unsupported number of privileges");
writeU16(os, privilege_count);
for (const std::string &privilege : authEntry.privileges) {
os << serializeString(privilege);
}
writeS64(os, authEntry.last_login);
leveldb::Status s = m_database->Put(leveldb::WriteOptions(),
authEntry.name, os.str());
return s.ok();
}
bool AuthDatabaseLevelDB::createAuth(AuthEntry &authEntry)
{
return saveAuth(authEntry);
}
bool AuthDatabaseLevelDB::deleteAuth(const std::string &name)
{
leveldb::Status s = m_database->Delete(leveldb::WriteOptions(), name);
return s.ok();
}
void AuthDatabaseLevelDB::listNames(std::vector<std::string> &res)
{
leveldb::Iterator* it = m_database->NewIterator(leveldb::ReadOptions());
res.clear();
for (it->SeekToFirst(); it->Valid(); it->Next()) {
res.emplace_back(it->key().ToString());
}
delete it;
}
void AuthDatabaseLevelDB::reload()
{
// No-op for LevelDB.
}
#endif // USE_LEVELDB
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