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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.
*/
#include <cassert>
#include <json/json.h>
#include "database-files.h"
#include "content_sao.h"
#include "remoteplayer.h"
#include "settings.h"
#include "porting.h"
#include "filesys.h"
// !!! WARNING !!!
// This backend is intended to be used on Minetest 0.4.16 only for the transition backend
// for player files
void PlayerDatabaseFiles::serialize(std::ostringstream &os, RemotePlayer *player)
{
// Utilize a Settings object for storing values
Settings args;
args.setS32("version", 1);
args.set("name", player->getName());
sanity_check(player->getPlayerSAO());
args.setS32("hp", player->getPlayerSAO()->getHP());
args.setV3F("position", player->getPlayerSAO()->getBasePosition());
args.setFloat("pitch", player->getPlayerSAO()->getPitch());
args.setFloat("yaw", player->getPlayerSAO()->getYaw());
args.setS32("breath", player->getPlayerSAO()->getBreath());
std::string extended_attrs = "";
player->serializeExtraAttributes(extended_attrs);
args.set("extended_attributes", extended_attrs);
args.writeLines(os);
os << "PlayerArgsEnd\n";
player->inventory.serialize(os);
}
void PlayerDatabaseFiles::savePlayer(RemotePlayer *player)
{
std::string savedir = m_savedir + DIR_DELIM;
std::string path = savedir + player->getName();
bool path_found = false;
RemotePlayer testplayer("", NULL);
for (u32 i = 0; i < PLAYER_FILE_ALTERNATE_TRIES && !path_found; i++) {
if (!fs::PathExists(path)) {
path_found = true;
continue;
}
// Open and deserialize file to check player name
std::ifstream is(path.c_str(), std::ios_base::binary);
if (!is.good()) {
errorstream << "Failed to open " << path << std::endl;
return;
}
testplayer.deSerialize(is, path, NULL);
is.close();
if (strcmp(testplayer.getName(), player->getName()) == 0) {
path_found = true;
continue;
}
path = savedir + player->getName() + itos(i);
}
if (!path_found) {
errorstream << "Didn't find free file for player " << player->getName()
<< std::endl;
return;
}
// Open and serialize file
std::ostringstream ss(std::ios_base::binary);
serialize(ss, player);
if (!fs::safeWriteToFile(path, ss.str())) {
infostream << "Failed to write " << path << std::endl;
}
player->setModified(false);
}
bool PlayerDatabaseFiles::removePlayer(const std::string &name)
{
std::string players_path = m_savedir + DIR_DELIM;
std::string path = players_path + name;
RemotePlayer temp_player("", NULL);
for (u32 i = 0; i < PLAYER_FILE_ALTERNATE_TRIES; i++) {
// Open file and deserialize
std::ifstream is(path.c_str(), std::ios_base::binary);
if (!is.good())
continue;
temp_player.deSerialize(is, path, NULL);
is.close();
if (temp_player.getName() == name) {
fs::DeleteSingleFileOrEmptyDirectory(path);
return true;
}
path = players_path + name + itos(i);
}
return false;
}
bool PlayerDatabaseFiles::loadPlayer(RemotePlayer *player, PlayerSAO *sao)
{
std::string players_path = m_savedir + DIR_DELIM;
std::string path = players_path + player->getName();
const std::string player_to_load = player->getName();
for (u32 i = 0; i < PLAYER_FILE_ALTERNATE_TRIES; i++) {
// Open file and deserialize
std::ifstream is(path.c_str(), std::ios_base::binary);
if (!is.good())
continue;
player->deSerialize(is, path, sao);
is.close();
if (player->getName() == player_to_load)
return true;
path = players_path + player_to_load + itos(i);
}
infostream << "Player file for player " << player_to_load << " not found" << std::endl;
return false;
}
void PlayerDatabaseFiles::listPlayers(std::vector<std::string> &res)
{
std::vector<fs::DirListNode> files = fs::GetDirListing(m_savedir);
// list files into players directory
for (std::vector<fs::DirListNode>::const_iterator it = files.begin(); it !=
files.end(); ++it) {
// Ignore directories
if (it->dir)
continue;
const std::string &filename = it->name;
std::string full_path = m_savedir + DIR_DELIM + filename;
std::ifstream is(full_path.c_str(), std::ios_base::binary);
if (!is.good())
continue;
RemotePlayer player(filename.c_str(), NULL);
// Null env & dummy peer_id
PlayerSAO playerSAO(NULL, &player, 15789, false);
player.deSerialize(is, "", &playerSAO);
is.close();
res.push_back(player.getName());
}
}
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