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/*
Minetest
Copyright (C) 2017 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
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.
*/
#pragma once
// !!! WARNING !!!
// This backend is intended to be used on Minetest 0.4.16 only for the transition backend
// for player files
#include "database.h"
#include <unordered_map>
#include <unordered_set>
#include <json/json.h>
class PlayerDatabaseFiles : public PlayerDatabase
{
public:
PlayerDatabaseFiles(const std::string &savedir);
virtual ~PlayerDatabaseFiles() = default;
void savePlayer(RemotePlayer *player);
bool loadPlayer(RemotePlayer *player, PlayerSAO *sao);
bool removePlayer(const std::string &name);
void listPlayers(std::vector<std::string> &res);
private:
void deSerialize(RemotePlayer *p, std::istream &is, const std::string &playername,
PlayerSAO *sao);
/*
serialize() writes a bunch of text that can contain
any characters except a '\0', and such an ending that
deSerialize stops reading exactly at the right point.
*/
void serialize(RemotePlayer *p, std::ostream &os);
std::string m_savedir;
};
class AuthDatabaseFiles : public AuthDatabase
{
public:
AuthDatabaseFiles(const std::string &savedir);
virtual ~AuthDatabaseFiles() = default;
virtual bool getAuth(const std::string &name, AuthEntry &res);
virtual bool saveAuth(const AuthEntry &authEntry);
virtual bool createAuth(AuthEntry &authEntry);
virtual bool deleteAuth(const std::string &name);
virtual void listNames(std::vector<std::string> &res);
virtual void reload();
private:
std::unordered_map<std::string, AuthEntry> m_auth_list;
std::string m_savedir;
bool readAuthFile();
bool writeAuthFile();
};
class ModMetadataDatabaseFiles : public ModMetadataDatabase
{
public:
ModMetadataDatabaseFiles(const std::string &savedir);
virtual ~ModMetadataDatabaseFiles() = default;
virtual bool getModEntries(const std::string &modname, StringMap *storage);
virtual bool setModEntry(const std::string &modname,
const std::string &key, const std::string &value);
virtual bool removeModEntry(const std::string &modname, const std::string &key);
virtual void listMods(std::vector<std::string> *res);
virtual void beginSave();
virtual void endSave();
private:
Json::Value *getOrCreateJson(const std::string &modname);
bool writeJson(const std::string &modname, const Json::Value &json);
std::string m_storage_dir;
std::unordered_map<std::string, Json::Value> m_mod_meta;
std::unordered_set<std::string> m_modified;
};
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