path: root/src/accounthandler.cpp

/*
 *  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 "accounthandler.h"

#include "account.h"
#include "chathandler.h"
#include "configuration.h"
#include "connectionhandler.h"
#include "debug.h"
#include "gamehandler.h"
#include "messagein.h"
#include "messageout.h"
#include "netcomputer.h"
#include "storage.h"

#include "utils/logger.h"
#include "utils/stringfilter.h"

using tmwserv::Account;
using tmwserv::AccountPtr;
using tmwserv::BeingPtr;
using tmwserv::Storage;

class AccountClient: public NetComputer
{
    public:
        /**
         * Constructor.
         */
        AccountClient(AccountHandler *, ENetPeer *);

        /**
         * Destructor.
         */
        ~AccountClient();

        /**
         * Set the account associated with the connection
         */
        void setAccount(AccountPtr acc);

        /**
         * Unset the account associated with the connection
         */
        void unsetAccount();

        /**
         * Get account associated with the connection.
         */
        AccountPtr getAccount() { return mAccountPtr; }

        /**
         * Set the selected character associated with connection.
         */
        void setCharacter(BeingPtr ch);

        /**
         * Deselect the character associated with connection.
         */
        void unsetCharacter();

        /**
         * Get character associated with the connection
         */
        BeingPtr getCharacter() { return mCharacterPtr; }

    private:
        /** Account associated with connection */
        AccountPtr mAccountPtr;

        /** Selected character */
        BeingPtr mCharacterPtr;
};

AccountClient::AccountClient(AccountHandler *handler, ENetPeer *peer):
    NetComputer(handler, peer),
    mAccountPtr(NULL),
    mCharacterPtr(NULL)
{
}

AccountClient::~AccountClient()
{
    unsetAccount();
}


void AccountClient::setAccount(AccountPtr acc)
{
    unsetAccount();
    mAccountPtr = acc;
}

void AccountClient::setCharacter(BeingPtr ch)
{
    unsetCharacter();
    mCharacterPtr = ch;
}

void AccountClient::unsetAccount()
{
    unsetCharacter();
    mAccountPtr = AccountPtr(NULL);
}

void AccountClient::unsetCharacter()
{
    if (mCharacterPtr.get() == NULL) return;
    mCharacterPtr = BeingPtr(NULL);
}

NetComputer *AccountHandler::computerConnected(ENetPeer *peer)
{
    return new AccountClient(this, peer);
}

void AccountHandler::computerDisconnected(NetComputer *comp)
{
    delete comp;
}

/**
 * Generic interface convention for getting a message and sending it to the
 * correct subroutines. Account handler takes care of determining the
 * current step in the account process, be it creation, setup, or login.
 */
void AccountHandler::processMessage(NetComputer *comp, MessageIn &message)
{
    AccountClient &computer = *static_cast< AccountClient * >(comp);

    Storage &store = Storage::instance("tmw");

#if defined (SQLITE_SUPPORT)
    // Reopen the db in this thread for sqlite, to avoid
    // Library Call out of sequence problem due to thread safe.
    store.setUser(config.getValue("dbuser", ""));
    store.setPassword(config.getValue("dbpass", ""));
    store.close();
    store.open();
#endif

    MessageOut result;

    switch (message.getId())
    {
        case PAMSG_LOGIN:
            {
                std::string clientVersion = message.readString();
                std::string username = message.readString();
                std::string password = message.readString();
                LOG_INFO(username << " is trying to login.", 1);

                result.writeShort(APMSG_LOGIN_RESPONSE);

                if (clientVersion < config.getValue("clientVersion", "0.0.0"))
                {
                    LOG_INFO("Client has an unsufficient version number to login.", 1);
                    result.writeByte(LOGIN_INVALID_VERSION);
                    break;
                }
                if (stringFilter->findDoubleQuotes(username))
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(username << ": has got double quotes in it.", 1);
                    break;
                }
                if (computer.getAccount().get() != NULL) {
                    LOG_INFO("Already logged in as " << computer.getAccount()->getName()
                        << ".", 1);
                    LOG_INFO("Please logout first.", 1);
                    result.writeByte(ERRMSG_FAILURE);
                    break;
                }
                if (getClientNumber() >= MAX_CLIENTS )
                {
                    // Too much clients logged in.
                    LOG_INFO("Client couldn't login. Already has " << MAX_CLIENTS
                    << " logged in.", 1);
                    result.writeByte(LOGIN_SERVER_FULL);
                    break;
                }

                // see if the account exists
                tmwserv::AccountPtr acc = store.getAccount(username);

                if (!acc.get() || acc->getPassword() != password) {
                    // account doesn't exist -- send error to client
                    LOG_INFO(username << ": Account does not exist or the password is invalid.", 1);

                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    break;
                }

                LOG_INFO("Login OK by " << username, 1);

                // Associate account with connection
                computer.setAccount(acc);

                result.writeByte(ERRMSG_OK);

                // Return information about available characters
                tmwserv::Beings &chars = computer.getAccount()->getCharacters();
                result.writeByte(chars.size());

                LOG_INFO(username << "'s account has " << chars.size() << " character(s).", 1);
                for (unsigned int i = 0; i < chars.size(); i++)
                {
                    result.writeString(chars[i]->getName());
                    result.writeByte(unsigned(short(chars[i]->getGender())));
                    result.writeByte(chars[i]->getHairStyle());
                    result.writeByte(chars[i]->getHairColor());
                    result.writeByte(chars[i]->getLevel());
                    result.writeShort(chars[i]->getMoney());
                }
            }
            break;

        case PAMSG_LOGOUT:
            {
                result.writeShort(APMSG_LOGOUT_RESPONSE);

                if ( computer.getAccount().get() == NULL )
                {
                    LOG_INFO("Can't logout. Not even logged in.", 1);
                    result.writeByte(ERRMSG_NO_LOGIN);
                }
                else
                {
                    LOG_INFO(computer.getAccount()->getName() << " logs out.", 1);
                    // computer.unsetCharacter(); Done by unsetAccount();
                    computer.unsetAccount();
                    result.writeByte(ERRMSG_OK);
                }
            }
            break;

        case PAMSG_REGISTER:
            {
                std::string clientVersion = message.readString();
                std::string username = message.readString();
                std::string password = message.readString();
                std::string email = message.readString();
                result.writeShort(APMSG_REGISTER_RESPONSE);

                if (clientVersion < config.getValue("clientVersion", "0.0.0"))
                {
                    LOG_INFO("Client has an unsufficient version number to login.", 1);
                    result.writeByte(REGISTER_INVALID_VERSION);
                    break;
                }

                // Checking if there are double quotes in it.
                if (stringFilter->findDoubleQuotes(username))
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(username << ": has got double quotes in it.", 1);
                    break;
                }

                // Checking conditions for having a good account.
                LOG_INFO(username << " is trying to register.", 1);

                // see if the account exists
                tmwserv::AccountPtr accPtr = store.getAccount(username);
                if ( accPtr.get() ) // Account already exists.
                {
                    result.writeByte(REGISTER_EXISTS_USERNAME);
                    LOG_INFO(username << ": Username already exists.", 1);
                }
                else if ((username.length() < MIN_LOGIN_LENGTH) || (username.length() > MAX_LOGIN_LENGTH)) // Username length
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(username << ": Username too short or too long.", 1);
                }
                else if (!stringFilter->filterContent(username)) // Checking if the Name is slang's free.
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(username << ": has got bad words in it.", 1);
                    break;
                }
                else if ((password.length() < MIN_PASSWORD_LENGTH) || (password.length() > MAX_PASSWORD_LENGTH))
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(email << ": Password too short or too long.", 1);
                }
                else if (!stringFilter->isEmailValid(email))
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(email << ": Email Invalid, only a@b.c format is accepted.", 1);
                }
                else if (stringFilter->findDoubleQuotes(email))
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(email << ": has got double quotes in it.", 1);
                    break;
                }
                else if (store.getSameEmailNumber(email) > 0) // Search if Email already exists.
                {
                    result.writeByte(REGISTER_EXISTS_EMAIL);
                    LOG_INFO(email << ": Email already exists.", 1);
                }
                else
                {
                    AccountPtr acc(new Account(username, password, email));
                    store.addAccount(acc);

                    result.writeByte(ERRMSG_OK);

                    store.flush(); // flush changes
                    LOG_INFO(username << ": Account registered.", 1);
                }
            }
            break;

        case PAMSG_UNREGISTER:
            {
                std::string username = message.readString();
                std::string password = message.readString();
                LOG_INFO(username << " wants to be deleted from our accounts.", 1);

                result.writeShort(APMSG_UNREGISTER_RESPONSE);

                if (stringFilter->findDoubleQuotes(username))
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(username << ": has got double quotes in it.", 1);
                    break;
                }

                // see if the account exists
                tmwserv::AccountPtr accPtr = store.getAccount(username);

                if (!accPtr.get() || accPtr->getPassword() != password) {
                    LOG_INFO("Account does not exist of bad password for " << username << ".", 1);

                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                } else {

                    // If the account to delete is the current account we're logged in.
                    // Get out of it in memory.
                    if (computer.getAccount().get() != NULL )
                    {
                        if (computer.getAccount()->getName() == username )
                        {
                            // computer.unsetCharacter(); Done by unsetAccount();
                            computer.unsetAccount();
                        }
                    }
                    // delete account and associated characters
                    LOG_INFO("Farewell " << username << " ...", 1);
                    store.delAccount(username);
                    store.flush();
                    result.writeByte(ERRMSG_OK);
                }
            }
            break;

        case PAMSG_EMAIL_CHANGE:
            {
                result.writeShort(APMSG_EMAIL_CHANGE_RESPONSE);

                if (computer.getAccount().get() == NULL) {
                    result.writeByte(ERRMSG_NO_LOGIN);
                    LOG_INFO("Not logged in. Can't change your Account's Email.", 1);
                    break;
                }

                std::string email = message.readString();
                if (!stringFilter->isEmailValid(email))
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(email << ": Invalid format, cannot change Email for " <<
                    computer.getAccount()->getName(), 1);
                }
                else if (stringFilter->findDoubleQuotes(email))
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(email << ": has got double quotes in it.", 1);
                }
                else if (store.getSameEmailNumber(email) > 1) // Search if Email already exists,
                {                                             // Except for the one already that is to
                    result.writeByte(EMAILCHG_EXISTS_EMAIL);  // be changed.
                    LOG_INFO(email << ": New Email already exists.", 1);
                }
                else
                {
                    computer.getAccount()->setEmail(email);
                    result.writeByte(ERRMSG_OK);
                    LOG_INFO(computer.getAccount()->getName() << ": Email changed to: " <<
                    email, 1);
                }
            }
            break;

        case PAMSG_EMAIL_GET:
            {
                result.writeShort(APMSG_EMAIL_GET_RESPONSE);
                if (computer.getAccount().get() == NULL) {
                    result.writeByte(ERRMSG_NO_LOGIN);
                    LOG_INFO("Not logged in. Can't get your Account's current Email.", 1);
                    break;
                }
                else
                {
                    result.writeByte(ERRMSG_OK);
                    result.writeString(computer.getAccount()->getEmail());
                }
            }
            break;

        case PAMSG_PASSWORD_CHANGE:
            {
                result.writeShort(APMSG_PASSWORD_CHANGE_RESPONSE);

                if (computer.getAccount().get() == NULL)
                {
                    result.writeByte(ERRMSG_NO_LOGIN);
                    LOG_INFO("Not logged in. Can't change your Account's Password.", 1);
                    break;
                }
                std::string oldPassword = message.readString();
                std::string newPassword = message.readString();
                if ( newPassword.length() < MIN_PASSWORD_LENGTH ||
                     newPassword.length() > MAX_PASSWORD_LENGTH )
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(computer.getAccount()->getName() <<
                    ": New password too long or too short.", 1);
                }
                else if (stringFilter->findDoubleQuotes(newPassword))
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(newPassword << ": has got double quotes in it.", 1);
                }
                else if ( oldPassword != computer.getAccount()->getPassword() )
                {
                    result.writeByte(ERRMSG_FAILURE);
                    LOG_INFO(computer.getAccount()->getName() <<
                    ": Old password is wrong.", 1);
                }
                else
                {
                    computer.getAccount()->setPassword(newPassword);
                    result.writeByte(ERRMSG_OK);
                    LOG_INFO(computer.getAccount()->getName() <<
                    ": The password was changed.", 1);
                }
            }
            break;

        case PAMSG_CHAR_CREATE:
            {
                result.writeShort(APMSG_CHAR_CREATE_RESPONSE);

                if (computer.getAccount().get() == NULL) {
                    result.writeByte(ERRMSG_NO_LOGIN);
                    LOG_INFO("Not logged in. Can't create a Character.", 1);
                    break;
                }

                // A player shouldn't have more than 3 characters.
                tmwserv::Beings &chars = computer.getAccount()->getCharacters();
                if (chars.size() >= MAX_OF_CHARACTERS)
                {
                    result.writeByte(CREATE_TOO_MUCH_CHARACTERS);
                    LOG_INFO("Already has " << MAX_OF_CHARACTERS
                    << " characters. Can't create another Character.", 1);
                    break;
                }

                std::string name = message.readString();
                // Checking if the Name is slang's free.
                if (!stringFilter->filterContent(name))
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(name << ": Character has got bad words in it.", 1);
                    break;
                }
                // Checking if the Name has got double quotes.
                if (stringFilter->findDoubleQuotes(name))
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(name << ": has got double quotes in it.", 1);
                    break;
                }
                // Check if the character's name already exists
                if (store.doesCharacterNameExists(name))
                {
                    result.writeByte(CREATE_EXISTS_NAME);
                    LOG_INFO(name << ": Character's name already exists.", 1);
                    break;
                }
                // Check for character's name length
                if ((name.length() < MIN_CHARACTER_LENGTH) || (name.length() > MAX_CHARACTER_LENGTH))
                {
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO(name << ": Character's name too short or too long.", 1);
                    break;
                }
                char hairStyle = message.readByte();
                if ((hairStyle < 0) || (hairStyle > (signed)MAX_HAIRSTYLE_VALUE))
                {
                    result.writeByte(CREATE_INVALID_HAIRSTYLE);
                    LOG_INFO(name << ": Character's hair Style is invalid.", 1);
                    break;
                }

                char hairColor = message.readByte();
                if ((hairColor < 0) || (hairColor > (signed)MAX_HAIRCOLOR_VALUE))
                {
                    result.writeByte(CREATE_INVALID_HAIRCOLOR);
                    LOG_INFO(name << ": Character's hair Color is invalid.", 1);
                    break;
                }
                Genders gender = (Genders)message.readByte();
                if ((gender < 0) || (gender > (signed)MAX_GENDER_VALUE))
                {
                    result.writeByte(CREATE_INVALID_GENDER);
                    LOG_INFO(name << ": Character's gender is invalid.", 1);
                    break;
                }
                // LATER_ON: Add race, face and maybe special attributes.

                // Customization of player's stats...
                std::vector<unsigned short> rawStats;
                rawStats.reserve(6);
                // strength
                rawStats.push_back((unsigned short)message.readShort());
                // agility
                rawStats.push_back((unsigned short)message.readShort());
                // vitality
                rawStats.push_back((unsigned short)message.readShort());
                // intelligence
                rawStats.push_back((unsigned short)message.readShort());
                // dexterity
                rawStats.push_back((unsigned short)message.readShort());
                // luck
                rawStats.push_back((unsigned short)message.readShort());

                // We see if the difference between the lowest stat and the highest isn't too
                // big.
                unsigned short lowestStat = 0;
                unsigned short highestStat = 0;
                unsigned int totalStats = 0;
                bool validNonZeroRawStats = true;
                for ( std::vector<unsigned short>::iterator i = rawStats.begin(); i != rawStats.end();)
                {
                    // For good total stat check.
                    totalStats = totalStats + *i;

                    // For checking if all stats are at least > 0
                    if (*i <= 0) validNonZeroRawStats = false;
                    if (lowestStat != 0)
                    {
                        if (lowestStat > *i) lowestStat = *i;
                    }
                    else
                    {
                        // We take the first value
                        lowestStat = *i;
                    }
                    if (highestStat != 0)
                    {
                        if (highestStat < *i) highestStat = *i;
                    }
                    else
                    {
                        // We take the first value
                        highestStat = *i;
                    }
                    ++i;
                }

                if ( totalStats > POINTS_TO_DISTRIBUTES_AT_LVL1 )
                {
                    result.writeByte(CREATE_RAW_STATS_TOO_HIGH);
                    LOG_INFO(name << ": Character's stats are too high to be of level 1.", 1);
                    break;
                }
                if ( totalStats < POINTS_TO_DISTRIBUTES_AT_LVL1 )
                {
                    result.writeByte(CREATE_RAW_STATS_TOO_LOW);
                    LOG_INFO(name << ": Character's stats are too low to be of level 1.", 1);
                    break;
                }
                if ( (highestStat - lowestStat) > (signed)MAX_DIFF_BETWEEN_STATS )
                {
                    result.writeByte(CREATE_RAW_STATS_INVALID_DIFF);
                    LOG_INFO(name << ": Character's stats difference is too high to be accepted.", 1);
                    break;
                }
                if ( !validNonZeroRawStats )
                {
                    result.writeByte(CREATE_RAW_STATS_EQUAL_TO_ZERO);
                    LOG_INFO(name << ": One stat is equal to zero.", 1);
                    break;
                }

                // The reserve(6) method allows us to be sure that rawStats[5] will work.
                tmwserv::RawStatistics stats = {rawStats[0], rawStats[1], rawStats[2],
                                                rawStats[3], rawStats[4], rawStats[5]};
                tmwserv::BeingPtr newCharacter(new tmwserv::Being(name, gender, hairStyle, hairColor,
                                               1 /* level */, 0 /* Money */, stats));
                newCharacter->setMapId((int)config.getValue("defaultMap", 1));
                newCharacter->setXY((int)config.getValue("startX", 0),
                                    (int)config.getValue("startY", 0));
                computer.getAccount()->addCharacter(newCharacter);

                LOG_INFO("Character " << name << " was created for "
                    << computer.getAccount()->getName() << "'s account.", 1);

                store.flush(); // flush changes
                result.writeByte(ERRMSG_OK);
            }
            break;

        case PAMSG_CHAR_SELECT:
            {
                result.writeShort(APMSG_CHAR_SELECT_RESPONSE);

                if (computer.getAccount().get() == NULL)
                {
                    result.writeByte(ERRMSG_NO_LOGIN);
                    LOG_INFO("Not logged in. Can't select a Character.", 1);
                    break; // not logged in
                }

                unsigned char charNum = message.readByte();

                tmwserv::Beings &chars = computer.getAccount()->getCharacters();
                // Character ID = 0 to Number of Characters - 1.
                if (charNum >= chars.size()) {
                    // invalid char selection
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO("Character Selection : Selection out of ID range.", 1);
                    break;
                }

                // set character
                // TODO: Handle reset character's map when the server can't load
                // it. And SELECT_NO_MAPS error return value when the default map couldn't
                // be loaded in setCharacter(). Not implemented yet for tests purpose...
                computer.setCharacter(chars[charNum]);
                tmwserv::BeingPtr selectedChar = computer.getCharacter();
                result.writeByte(ERRMSG_OK);
                std::string mapName = store.getMapNameFromId(selectedChar->getMapId());
                result.writeString(mapName);
                result.writeShort(selectedChar->getX());
                result.writeShort(selectedChar->getY());
                LOG_INFO("Selected Character " << int(charNum)
                << ": " <<
                selectedChar->getName(), 1);
            }
            break;

        case PAMSG_CHAR_DELETE:
            {
                result.writeShort(APMSG_CHAR_DELETE_RESPONSE);

                if (computer.getAccount().get() == NULL)
                {
                    result.writeByte(ERRMSG_NO_LOGIN);
                    LOG_INFO("Not logged in. Can't delete a Character.", 1);
                    break; // not logged in
                }

                unsigned char charNum = message.readByte();

                tmwserv::Beings &chars = computer.getAccount()->getCharacters();
                // Character ID = 0 to Number of Characters - 1.
                if (charNum >= chars.size()) {
                    // invalid char selection
                    result.writeByte(ERRMSG_INVALID_ARGUMENT);
                    LOG_INFO("Character Deletion : Selection out of ID range.", 1);
                    break;
                }

                // Delete the character
                // if the character to delete is the current character, get off of it in
                // memory.
                if ( computer.getCharacter().get() != NULL )
                {
                    if ( computer.getCharacter()->getName() == chars[charNum].get()->getName() )
                    {
                        computer.unsetCharacter();
                    }
                }

                std::string deletedCharacter = chars[charNum].get()->getName();
                computer.getAccount()->delCharacter(deletedCharacter);
                store.flush();
                LOG_INFO(deletedCharacter << ": Character deleted...", 1);
                result.writeByte(ERRMSG_OK);

            }
            break;

        case PAMSG_CHAR_LIST:
            {
                result.writeShort(APMSG_CHAR_LIST_RESPONSE);

                if (computer.getAccount().get() == NULL)
                {
                    result.writeByte(ERRMSG_NO_LOGIN);
                    LOG_INFO("Not logged in. Can't list characters.", 1);
                    break; // not logged in
                }

                result.writeByte(ERRMSG_OK);
                // Return information about available characters
                tmwserv::Beings &chars = computer.getAccount()->getCharacters();
                result.writeByte(chars.size());

                LOG_INFO(computer.getAccount()->getName() << "'s account has "
                << chars.size() << " character(s).", 1);
                std::string charStats;
                std::string mapName;
                for (unsigned int i = 0; i < chars.size(); i++)
                {
                    result.writeString(chars[i]->getName());
                    if (i > 0) charStats += ", ";
                    charStats += chars[i]->getName();
                    result.writeByte(unsigned(short(chars[i]->getGender())));
                    result.writeByte(chars[i]->getHairStyle());
                    result.writeByte(chars[i]->getHairColor());
                    result.writeByte(chars[i]->getLevel());
                    result.writeShort(chars[i]->getMoney());
                    result.writeShort(chars[i]->getStrength());
                    result.writeShort(chars[i]->getAgility());
                    result.writeShort(chars[i]->getVitality());
                    result.writeShort(chars[i]->getIntelligence());
                    result.writeShort(chars[i]->getDexterity());
                    result.writeShort(chars[i]->getLuck());
                    mapName = store.getMapNameFromId(chars[i]->getMapId());
                    result.writeString(mapName);
                    result.writeShort(chars[i]->getX());
                    result.writeShort(chars[i]->getY());
                }
                charStats += ".";
                LOG_INFO(charStats.c_str(), 1);
            }
            break;

        case PAMSG_ENTER_WORLD:
            {
                result.writeShort(APMSG_ENTER_WORLD_RESPONSE);

                if (computer.getAccount().get() == NULL)
                {
                    result.writeByte(ERRMSG_NO_LOGIN);
                    LOG_INFO("Not logged in. Can't enter the world.", 1);
                    break; // not logged in
                }
                if (computer.getCharacter().get() == NULL)
                {
                    result.writeByte(ERRMSG_NO_CHARACTER_SELECTED);
                    LOG_INFO("No character selected. Can't enter the world.", 2);
                    break; // no character selected
                }
                std::string magic_token(32, ' ');
                for(int i = 0; i < 32; ++i) magic_token[i] = 1 + (int) (127 * (rand() / (RAND_MAX + 1.0)));
                result.writeByte(ERRMSG_OK);
                result.writeString("localhost");
                result.writeShort(9603);
                result.writeString(magic_token, 32);
                registerGameClient(magic_token, computer.getCharacter());
            }
            break;

        case PAMSG_ENTER_CHAT:
            {
                result.writeShort(APMSG_ENTER_CHAT_RESPONSE);

                if (computer.getAccount().get() == NULL)
                {
                    result.writeByte(ERRMSG_NO_LOGIN);
                    LOG_INFO("Not logged in. Can't enter the chat.", 1);
                    break; // not logged in
                }
                if (computer.getCharacter().get() == NULL)
                {
                    result.writeByte(ERRMSG_NO_CHARACTER_SELECTED);
                    LOG_INFO("No character selected. Can't enter the chat.", 2);
                    break; // no character selected
                }
                std::string magic_token(32, ' ');
                for(int i = 0; i < 32; ++i) magic_token[i] = 1 + (int) (127 * (rand() / (RAND_MAX + 1.0)));
                result.writeByte(ERRMSG_OK);
                result.writeString("localhost");
                result.writeShort(9603);
                result.writeString(magic_token, 32);
                registerChatClient(magic_token, computer.getCharacter()->getName(),
                                   computer.getAccount()->getLevel());
            }
            break;

        default:
            LOG_WARN("Invalid message type", 0);
            result.writeShort(XXMSG_INVALID);
            break;
    }

    // return result
    computer.send(result.getPacket());
}