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/*
* The Mana World Server
* Copyright 2004 The Mana World Development Team
*
* This file is part of The Mana World.
*
* The Mana World 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 any later version.
*
* The Mana World 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 The Mana World; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id$
*/
#include <cassert>
#include "dalstorage.h"
#include "configuration.h"
#include "dalstoragesql.h"
#include "dal/dalexcept.h"
#include "dal/dataproviderfactory.h"
#include "utils/cipher.h"
#include "utils/functors.h"
#include "utils/logger.h"
/**
* Functor used to search an Account by name in Accounts.
*/
class account_by_name
{
public:
account_by_name(const std::string& name)
: mName(name)
{}
bool operator()(std::pair<unsigned, AccountPtr> const &elem) const
{ return elem.second->getName() == mName; }
private:
std::string mName; /**< the name to look for */
};
/**
* Constructor.
*/
DALStorage::DALStorage()
: mDb(dal::DataProviderFactory::createDataProvider())
{
// the connection to the database will be made on the first request
// to the database.
}
/**
* Destructor.
*/
DALStorage::~DALStorage()
throw()
{
if (mDb->isConnected()) {
close();
}
// mAccounts and mCharacters contain smart pointers that will deallocate
// the memory so nothing else to do here :)
}
/**
* Connect to the database and initialize it if necessary.
*/
void
DALStorage::open(void)
{
// Do nothing if already connected.
if (mDb->isConnected()) {
return;
}
using namespace dal;
static bool dbFileShown = false;
std::string dbFile(getName());
try {
// open a connection to the database.
#if defined (MYSQL_SUPPORT) || defined (POSTGRESQL_SUPPORT)
mDb->connect(getName(), getUser(), getPassword());
if (!dbFileShown)
{
LOG_INFO("Using " << dbFile << " as Database Name.", 0);
dbFileShown = true;
}
#elif defined (SQLITE_SUPPORT)
// create the database file name.
dbFile += ".db";
mDb->connect(dbFile, "", "");
if (!dbFileShown)
{
LOG_INFO("SQLite uses ./" << dbFile << " as DB.", 0);
dbFileShown = true;
}
#endif
// ensure that the required tables are created.
//
// strategy1: find a way to obtain the list of tables from the
// underlying database and create the tables that are
// missing.
//
// strategy2: try to create the tables and check the exceptions
// thrown.
//
// comments:
// - strategy1 is easy to achieve if we are using MysQL as
// executing the request "show tables;" returns the list of
// tables. However, there is not such a query for SQLite3.
// When using SQLite3 from the interactive shell or the
// command line, the command ".tables" returns the list of
// tables but sqlite3_exec() does not validate this statement
// and fails.
// The cost of this strategy is:
// (num. tables to create + 1) queries at most and
// 1 at minimum.
//
// - strategy2 will work with probably most databases.
// The cost of this strategy is:
// (num. tables to create) queries.
// we will stick with strategy2 for the moment as we are focusing
// on SQLite.
// FIXME: The tables should be checked/created at startup in order to avoid
// a DbSqlQueryExecFailure assert on sqlite while registering.
// Also, this would initialize connection to the database earlier in memory.
createTable(MAPS_TBL_NAME, SQL_MAPS_TABLE);
createTable(ACCOUNTS_TBL_NAME, SQL_ACCOUNTS_TABLE);
createTable(CHARACTERS_TBL_NAME, SQL_CHARACTERS_TABLE);
createTable(ITEMS_TBL_NAME, SQL_ITEMS_TABLE);
createTable(WORLD_ITEMS_TBL_NAME, SQL_WORLD_ITEMS_TABLE);
createTable(INVENTORIES_TBL_NAME, SQL_INVENTORIES_TABLE);
createTable(CHANNELS_TBL_NAME, SQL_CHANNELS_TABLE);
}
catch (const DbConnectionFailure& e) {
LOG_ERROR("unable to connect to the database: " << e.what(), 0);
}
catch (const DbSqlQueryExecFailure& e) {
LOG_ERROR("SQL query failure: " << e.what(), 0);
}
mIsOpen = mDb->isConnected();
}
/**
* Disconnect from the database.
*/
void
DALStorage::close(void)
{
mDb->disconnect();
mIsOpen = mDb->isConnected();
}
/**
* Get an account by user name.
*/
AccountPtr
DALStorage::getAccount(const std::string& userName)
{
// connect to the database (if not connected yet).
open();
// look for the account in the list first.
Accounts::iterator it_end = mAccounts.end(),
it = std::find_if(mAccounts.begin(), it_end, account_by_name(userName));
if (it != it_end)
return it->second;
using namespace dal;
// the account was not in the list, look for it in the database.
try {
std::string sql("select * from ");
sql += ACCOUNTS_TBL_NAME;
sql += " where username = \"";
sql += userName;
sql += "\";";
const RecordSet& accountInfo = mDb->execSql(sql);
// if the account is not even in the database then
// we have no choice but to return nothing.
if (accountInfo.isEmpty()) {
return AccountPtr(NULL);
}
// specialize the string_to functor to convert
// a string to an unsigned int.
string_to<unsigned short> toUint;
unsigned id = toUint(accountInfo(0, 0));
// create an Account instance
// and initialize it with information about the user.
AccountPtr account(new Account(accountInfo(0, 1),
accountInfo(0, 2),
accountInfo(0, 3), id));
// specialize the string_to functor to convert
// a string to an unsigned short.
string_to<unsigned short> toUshort;
mAccounts.insert(std::make_pair(id, account));
// load the characters associated with the account.
sql = "select * from ";
sql += CHARACTERS_TBL_NAME;
sql += " where user_id = '";
sql += accountInfo(0, 0);
sql += "';";
const RecordSet& charInfo = mDb->execSql(sql);
if (!charInfo.isEmpty()) {
Players players;
LOG_INFO(userName << "'s account has " << charInfo.rows()
<< " character(s) in database.", 1);
// As the recordset functions are set to be able to get one
// recordset at a time, we store charInfo in a temp array of
// strings. To avoid the problem where values of charInfo were
// erased by the values of mapInfo.
std::string strCharInfo[charInfo.rows()][charInfo.cols()];
for (unsigned int i = 0; i < charInfo.rows(); ++i)
{
for (unsigned int j = 0; j < charInfo.cols(); ++j)
{
strCharInfo[i][j] = charInfo(i,j);
}
}
unsigned int charRows = charInfo.rows();
for (unsigned int k = 0; k < charRows; ++k) {
PlayerPtr player(new Player(strCharInfo[k][2], toUint(strCharInfo[k][0])));
player->setGender((Genders)toUshort(strCharInfo[k][3]));
player->setHairStyle(toUshort(strCharInfo[k][4]));
player->setHairColor(toUshort(strCharInfo[k][5]));
player->setLevel(toUshort(strCharInfo[k][6]));
player->setMoney(toUint(strCharInfo[k][7]));
player->setXY(toUshort(strCharInfo[k][8]),
toUshort(strCharInfo[k][9]));
for (int i = 0; i < NB_RSTAT; ++i)
player->setRawStat(i, toUshort(strCharInfo[k][11 + i]));
unsigned int mapId = toUint(strCharInfo[k][10]);
if ( mapId > 0 )
{
player->setMapId(mapId);
}
else
{
// Set player to default map and one of the default location
// Default map is to be 1, as not found return value will be 0.
player->setMapId((int)config.getValue("defaultMap", 1));
}
mCharacters.push_back(player);
players.push_back(player);
} // End of for each characters
account->setCharacters(players);
} // End if there are characters.
return account;
}
catch (const DbSqlQueryExecFailure& e) {
return AccountPtr(NULL); // TODO: Throw exception here
}
}
/**
* Return the list of all Emails addresses.
*/
std::list<std::string>
DALStorage::getEmailList()
{
// If not opened already
open();
std::list <std::string> emailList;
try {
std::string sql("select email from ");
sql += ACCOUNTS_TBL_NAME;
sql += ";";
const dal::RecordSet& accountInfo = mDb->execSql(sql);
// if the account is not even in the database then
// we have no choice but to return nothing.
if (accountInfo.isEmpty()) {
return emailList;
}
for (unsigned int i = 0; i < accountInfo.rows(); i++)
{
// We add all these addresses to the list
emailList.push_front(accountInfo(i, 0));
}
}
catch (const dal::DbSqlQueryExecFailure& e) {
// TODO: throw an exception.
LOG_ERROR("SQL query failure: " << e.what(), 0);
}
return emailList;
}
/**
* Tells if the email address already exists
* @return true if the email address exists.
*/
bool DALStorage::doesEmailAddressExist(std::string const &email)
{
// If not opened already
open();
try {
std::ostringstream sql;
sql << "select count(email) from " << ACCOUNTS_TBL_NAME
<< " where upper(email) = upper(\"" << email << "\");";
dal::RecordSet const &accountInfo = mDb->execSql(sql.str());
std::istringstream ssStream(accountInfo(0, 0));
unsigned int iReturn = 1;
ssStream >> iReturn;
return iReturn != 0;
} catch (std::exception const &e) {
// TODO: throw an exception.
LOG_ERROR("SQL query failure: " << e.what(), 0);
}
return true;
}
/**
* Tells if the character's name already exists
* @return true if character's name exists.
*/
bool DALStorage::doesCharacterNameExist(const std::string& name)
{
// If not opened already
open();
try {
std::ostringstream sql;
sql << "select count(name) from " << CHARACTERS_TBL_NAME
<< " where name = \"" << name << "\";";
dal::RecordSet const &accountInfo = mDb->execSql(sql.str());
std::istringstream ssStream(accountInfo(0, 0));
int iReturn = 1;
ssStream >> iReturn;
return iReturn != 0;
} catch (std::exception const &e) {
// TODO: throw an exception.
LOG_ERROR("SQL query failure: " << e.what(), 0);
}
return true;
}
/**
* Tells the map name from the map id
*/
const std::string
DALStorage::getMapNameFromId(const unsigned int mapId)
{
// If not opened already
open();
try {
std::stringstream sql;
sql << "select map from ";
sql << MAPS_TBL_NAME;
sql << " where id = ";
sql << mapId;
sql << ";";
const dal::RecordSet& mapInfo = mDb->execSql(sql.str());
// If the map return is empty then we have no choice but to return None.
if (mapInfo.isEmpty()) {
return "None";
}
std::string strMap(mapInfo(0,0));
return strMap;
}
catch (const dal::DbSqlQueryExecFailure& e) {
// TODO: throw an exception.
LOG_ERROR("SQL query failure: " << e.what(), 0);
}
return "None";
}
std::map<short, ChatChannel>
DALStorage::getChannelList()
{
// If not opened already
open();
// specialize the string_to functor to convert
// a string to a short.
string_to<short> toShort;
// The formatted datas
std::map<short, ChatChannel> channels;
try {
std::stringstream sql;
sql << "select id, name, announcement, password from ";
sql << CHANNELS_TBL_NAME;
sql << ";";
const dal::RecordSet& channelInfo = mDb->execSql(sql.str());
// If the map return is empty then we have no choice but to return false.
if (channelInfo.isEmpty()) {
return channels;
}
for ( unsigned int i = 0; i < channelInfo.rows(); ++i)
{
channels.insert(std::make_pair(toShort(channelInfo(i,0)),
ChatChannel(channelInfo(i,1),
channelInfo(i,2),
channelInfo(i,3))));
LOG_DEBUG("Channel (" << channelInfo(i,0) << ") loaded: " << channelInfo(i,1)
<< ": " << channelInfo(i,2), 5);
}
return channels;
}
catch (const dal::DbSqlQueryExecFailure& e) {
// TODO: throw an exception.
LOG_ERROR("SQL query failure: " << e.what(), 0);
}
return channels;
}
void
DALStorage::updateChannels(std::map<short, ChatChannel>& channelList)
{
#if defined (SQLITE_SUPPORT)
// Reopen the db in this thread for sqlite, to avoid
// Library Call out of sequence problem due to thread safe.
close();
#endif
open();
try {
// Empties the table
std::stringstream sql;
sql << "delete from "
<< CHANNELS_TBL_NAME
<< ";";
mDb->execSql(sql.str());
for (std::map<short, ChatChannel>::iterator i = channelList.begin();
i != channelList.end();)
{
// insert registered channel if id < MAX_PUBLIC_CHANNELS_RANGE;
if ( i->first < (signed)MAX_PUBLIC_CHANNELS_RANGE )
{
if (i->second.getName() != "")
{
sql.str("");
sql << "insert into "
<< CHANNELS_TBL_NAME
<< " (id, name, announcement, password)"
<< " values ("
<< i->first << ", \""
<< i->second.getName() << "\", \""
<< i->second.getAnnouncement() << "\", \""
<< i->second.getPassword() << "\");";
LOG_DEBUG("Channel (" << i->first << ") saved: " << i->second.getName()
<< ": " << i->second.getAnnouncement(), 5);
}
mDb->execSql(sql.str());
}
++i;
}
}
catch (const dal::DbSqlQueryExecFailure& e) {
// TODO: throw an exception.
LOG_ERROR("SQL query failure: " << e.what(), 0);
}
}
/**
* Create the specified table.
*/
void
DALStorage::createTable(const std::string& tblName,
const std::string& sql)
{
try {
mDb->execSql(sql);
}
catch (const dal::DbSqlQueryExecFailure& e) {
// error message to check against.
#if defined (MYSQL_SUPPORT)
std::string alreadyExists("Table '");
alreadyExists += tblName;
alreadyExists += "' already exists";
#elif defined (POSTGRESQL_SUPPORT)
std::string alreadyExists("table ");
alreadyExists += tblName;
alreadyExists += " already exists";
#else // SQLITE_SUPPORT
std::string alreadyExists("table ");
alreadyExists += tblName;
alreadyExists += " already exists";
#endif
const std::string msg(e.what());
// oops, another problem occurred.
if (msg != alreadyExists) {
// rethrow to let other error handlers manage the problem.
throw;
}
}
}
/**
* Add an account to the database.
*/
void DALStorage::addAccount(AccountPtr const &account)
{
assert(account->getCharacters().size() == 0);
using namespace dal;
// TODO: we should start a transaction here so that in case of problem
// the lost of data would be minimized.
// insert the account.
std::ostringstream sql1;
sql1 << "insert into " << ACCOUNTS_TBL_NAME
<< " (username, password, email, level, banned)"
<< " values (\""
<< account->getName() << "\", \""
<< account->getPassword() << "\", \""
<< account->getEmail() << "\", "
<< account->getLevel() << ", 0);";
mDb->execSql(sql1.str());
// get the account id.
std::ostringstream sql2;
sql2 << "select id from " << ACCOUNTS_TBL_NAME
<< " where username = \"" << account->getName() << "\";";
const RecordSet& accountInfo = mDb->execSql(sql2.str());
string_to<unsigned int> toUint;
unsigned id = toUint(accountInfo(0, 0));
account->setID(id);
mAccounts.insert(std::make_pair(id, account));
}
/**
* Update all the accounts from the database.
*/
void DALStorage::flushAll()
{
for (Accounts::iterator i = mAccounts.begin(),
i_end = mAccounts.end(); i != i_end; ++i)
flush(i->second);
}
/**
* Update an account from the database.
*/
void DALStorage::flush(AccountPtr const &account)
{
assert(account->getID() >= 0);
using namespace dal;
// TODO: we should start a transaction here so that in case of problem
// the loss of data would be minimized.
// update the account.
std::ostringstream sql1;
sql1 << "update " << ACCOUNTS_TBL_NAME
<< " set username = \"" << account->getName() << "\", "
<< "password = \"" << account->getPassword() << "\", "
<< "email = \"" << account->getEmail() << "\", "
<< "level = '" << account->getLevel() << "' "
<< "where id = '" << account->getID() << "';";
mDb->execSql(sql1.str());
// get the list of characters that belong to this account.
Players &characters = account->getCharacters();
// insert or update the characters.
for (Players::const_iterator it = characters.begin(),
it_end = characters.end(); it != it_end; ++it) {
std::ostringstream sql3;
if ((*it)->getID() < 0) {
// insert the character
sql3 << "insert into " << CHARACTERS_TBL_NAME
<< " (user_id, name, gender, hair_style, hair_color, level, money,"
" x, y, map_id, str, agi, vit, int, dex, luck) values ("
<< account->getID() << ", \""
<< (*it)->getName() << "\", "
<< (*it)->getGender() << ", "
<< (int)(*it)->getHairStyle() << ", "
<< (int)(*it)->getHairColor() << ", "
<< (int)(*it)->getLevel() << ", "
<< (*it)->getMoney() << ", "
<< (*it)->getX() << ", "
<< (*it)->getY() << ", "
<< (*it)->getMapId() << ", "
<< (*it)->getRawStat(STAT_STR) << ", "
<< (*it)->getRawStat(STAT_AGI) << ", "
<< (*it)->getRawStat(STAT_VIT) << ", "
<< (*it)->getRawStat(STAT_INT) << ", "
<< (*it)->getRawStat(STAT_DEX) << ", "
<< (*it)->getRawStat(STAT_LUK) << ");";
// get the character id
std::ostringstream sql2;
sql2 << "select id from " << CHARACTERS_TBL_NAME
<< " where name = \"" << (*it)->getName() << "\";";
RecordSet const &charInfo = mDb->execSql(sql2.str());
string_to<unsigned int> toUint;
(*it)->setID(toUint(charInfo(0, 0)));
} else {
sql3 << "update " << CHARACTERS_TBL_NAME
<< " set name = \"" << (*it)->getName() << "\", "
<< " gender = " << (*it)->getGender() << ", "
<< " hair_style = " << (int)(*it)->getHairStyle() << ", "
<< " hair_color = " << (int)(*it)->getHairColor() << ", "
<< " level = " << (int)(*it)->getLevel() << ", "
<< " money = " << (*it)->getMoney() << ", "
<< " x = " << (*it)->getX() << ", "
<< " y = " << (*it)->getY() << ", "
<< " map_id = " << (*it)->getMapId() << ", "
<< " str = " << (*it)->getRawStat(STAT_STR) << ", "
<< " agi = " << (*it)->getRawStat(STAT_AGI) << ", "
<< " vit = " << (*it)->getRawStat(STAT_VIT) << ", "
#if defined(MYSQL_SUPPORT) || defined(POSTGRESQL_SUPPORT)
<< " `int` = " << (*it)->getRawStat(STAT_INT) << ", "
#else
<< " int = " << (*it)->getRawStat(STAT_INT) << ", "
#endif
<< " dex = " << (*it)->getRawStat(STAT_DEX) << ", "
<< " luck = " << (*it)->getRawStat(STAT_LUK)
<< " where id = " << (*it)->getID() << ";";
}
mDb->execSql(sql3.str());
// TODO: inventories.
}
// Existing characters in memory have been inserted or updated in database.
// Now, let's remove those who are no more in memory from database.
// specialize the string_to functor to convert
// a string to an unsigned int.
string_to<unsigned short> toUint;
std::ostringstream sql4;
sql4 << "select name, id from " << CHARACTERS_TBL_NAME
<< " where user_id = '" << account->getID() << "';";
const RecordSet& charInMemInfo = mDb->execSql(sql4.str());
// We compare chars from memory and those existing in db,
// And delete those not in mem but existing in db.
bool charFound;
for ( unsigned int i = 0; i < charInMemInfo.rows(); ++i) // in database
{
charFound = false;
for (Players::const_iterator it = characters.begin(),
it_end = characters.end(); it != it_end; ++it) // In memory
{
if ( charInMemInfo(i, 0) == (*it)->getName() )
{
charFound = true;
break;
}
}
if ( !charFound )
{
// The char is db but not in memory,
// It will be removed from database.
// We store the id of the char to delete
// Because as deleted, the RecordSet is also emptied
// That creates an error.
unsigned int charId = toUint(charInMemInfo(i, 1));
// delete the inventory.
std::ostringstream sql5;
sql5 << "delete from ";
sql5 << INVENTORIES_TBL_NAME;
sql5 << " where owner_id = '";
sql5 << charId;
sql5 << "';";
mDb->execSql(sql5.str());
// now delete the character.
std::ostringstream sql6;
sql6 << "delete from ";
sql6 << CHARACTERS_TBL_NAME;
sql6 << " where id = '";
sql6 << charId;
sql6 << "';";
mDb->execSql(sql6.str());
}
}
}
/**
* Delete an account and its associated data from the database.
*/
void DALStorage::delAccount(AccountPtr const &account)
{
using namespace dal;
account->setCharacters(Players());
flush(account);
mAccounts.erase(account->getID());
// delete the account.
std::ostringstream sql;
sql << "delete from " << ACCOUNTS_TBL_NAME
<< " where id = '" << account->getID() << "';";
mDb->execSql(sql.str());
}
/**
* Unload an account from memory.
*/
void DALStorage::unloadAccount(AccountPtr const &account)
{
flush(account);
mAccounts.erase(account->getID());
}
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