Core/RemoteAccess: Added support for remote access using email/password.
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hondacrx
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/*
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* Copyright (C) 2012-2020 CypherCore <http://github.com/CypherCore>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using Framework.Configuration;
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using Framework.Constants;
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using Framework.Cryptography;
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using Framework.Database;
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using Framework.Networking;
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using Game.Chat;
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using System;
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using System.Net;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading;
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namespace Game.Networking
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{
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public class RASocket : ISocket
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{
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Socket _socket;
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bool _closed;
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IPAddress _remoteAddress;
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byte[] _receiveBuffer;
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public RASocket(Socket socket)
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{
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_socket = socket;
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_remoteAddress = ((IPEndPoint)_socket.RemoteEndPoint).Address;
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_receiveBuffer = new byte[1024];
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}
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public void Accept()
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{
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// wait 1 second for active connections to send negotiation request
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for (int counter = 0; counter < 10 && _socket.Available == 0; counter++)
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Thread.Sleep(100);
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if (_socket.Available > 0)
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{
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// Handle subnegotiation
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_socket.Receive(_receiveBuffer);
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// Send the end-of-negotiation packet
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byte[] reply = { 0xFF, 0xF0 };
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_socket.Send(reply);
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}
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Send("Authentication Required\r\n");
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Send("Email: ");
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string userName = ReadString();
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if (userName.IsEmpty())
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{
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CloseSocket();
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return;
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}
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Log.outInfo(LogFilter.CommandsRA, $"Accepting RA connection from user {userName} (IP: {_remoteAddress})");
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Send("Password: ");
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string password = ReadString();
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if (password.IsEmpty())
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{
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CloseSocket();
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return;
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}
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if (!CheckAccessLevelAndPassword(userName, password))
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{
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Send("Authentication failed\r\n");
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CloseSocket();
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return;
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}
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Log.outInfo(LogFilter.CommandsRA, $"User {userName} (IP: {_remoteAddress}) authenticated correctly to RA");
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// Authentication successful, send the motd
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foreach (string line in Global.WorldMgr.GetMotd())
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Send(line);
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Send("\r\n");
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// Read commands
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for (; ; )
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{
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Send("\r\nCypher>");
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string command = ReadString();
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if (!ProcessCommand(command))
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break;
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}
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CloseSocket();
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}
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public bool Update()
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{
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return IsOpen();
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}
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void Send(string str)
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{
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if (!IsOpen())
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return;
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_socket.Send(Encoding.UTF8.GetBytes(str));
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}
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string ReadString()
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{
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try
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{
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string str = "";
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do
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{
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int bytes = _socket.Receive(_receiveBuffer);
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str = String.Concat(str, Encoding.UTF8.GetString(_receiveBuffer, 0, bytes));
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}
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while (!str.Contains("\n"));
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return str.TrimEnd('\r', '\n');
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}
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catch (Exception ex)
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{
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Log.outException(ex);
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return "";
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}
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}
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bool CheckAccessLevelAndPassword(string email, string password)
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{
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//"SELECT a.id, a.username FROM account a LEFT JOIN battlenet_accounts ba ON a.battlenet_account = ba.id WHERE ba.email = ?"
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PreparedStatement stmt = DB.Login.GetPreparedStatement(LoginStatements.SEL_BNET_GAME_ACCOUNT_LIST);
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stmt.AddValue(0, email);
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SQLResult result = DB.Login.Query(stmt);
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if (result.IsEmpty())
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{
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Log.outInfo(LogFilter.CommandsRA, $"User {email} does not exist in database");
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return false;
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}
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uint accountId = result.Read<uint>(0);
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string username = result.Read<string>(1);
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stmt = DB.Login.GetPreparedStatement(LoginStatements.SEL_ACCOUNT_ACCESS_BY_ID);
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stmt.AddValue(0, accountId);
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result = DB.Login.Query(stmt);
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if (result.IsEmpty())
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{
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Log.outInfo(LogFilter.CommandsRA, $"User {email} has no privilege to login");
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return false;
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}
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//"SELECT SecurityLevel, RealmID FROM account_access WHERE AccountID = ? and (RealmID = ? OR RealmID = -1) ORDER BY SecurityLevel desc");
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if (result.Read<byte>(0) < ConfigMgr.GetDefaultValue("Ra.MinLevel", (byte)AccountTypes.Administrator))
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{
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Log.outInfo(LogFilter.CommandsRA, $"User {email} has no privilege to login");
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return false;
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}
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else if (result.Read<int>(1) != -1)
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{
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Log.outInfo(LogFilter.CommandsRA, $"User {email} has to be assigned on all realms (with RealmID = '-1')");
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return false;
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}
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stmt = DB.Login.GetPreparedStatement(LoginStatements.SEL_CHECK_PASSWORD);
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stmt.AddValue(0, accountId);
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result = DB.Login.Query(stmt);
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if (!result.IsEmpty())
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{
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var salt = result.Read<byte[]>(0);
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var verifier = result.Read<byte[]>(1);
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if (SRP6.CheckLogin(username, password, salt, verifier))
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return true;
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}
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Log.outInfo(LogFilter.CommandsRA, $"Wrong password for user: {email}");
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return false;
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}
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bool ProcessCommand(string command)
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{
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if (command.Length == 0)
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return true;
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Log.outInfo(LogFilter.CommandsRA, $"Received command: {command}");
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// handle quit, exit and logout commands to terminate connection
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if (command == "quit" || command == "exit" || command == "logout")
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{
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Send("Closing\r\n");
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return false;
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}
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RemoteAccessHandler cmd = new RemoteAccessHandler(CommandPrint);
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cmd.ParseCommand(command);
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return true;
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}
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public bool IsOpen() { return _socket.Connected; }
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public void CloseSocket()
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{
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if (_socket == null)
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return;
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try
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{
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_socket.Shutdown(SocketShutdown.Both);
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_socket.Close();
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}
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catch (Exception ex)
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{
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Log.outDebug(LogFilter.Network, "WorldSocket.CloseSocket: {0} errored when shutting down socket: {1}", _remoteAddress.ToString(), ex.Message);
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}
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}
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void CommandPrint(string text)
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{
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if (text.IsEmpty())
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return;
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Send(text);
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}
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}
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}
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