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Bot.cs 27KB

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  1. using System;
  2. using System.Collections.Generic;
  3. using System.IO;
  4. using System.Linq;
  5. using System.Net;
  6. using System.Net.Sockets;
  7. using System.Text.RegularExpressions;
  8. using System.Threading;
  9. using System.Threading.Tasks;
  10. using Combot.IRCServices;
  11. using Combot.Configurations;
  12. using Combot.Databases;
  13. using Combot.IRCServices.Messaging;
  14. using Combot.Modules;
  15. namespace Combot
  16. {
  17. public class Bot
  18. {
  19. public event Action<CommandMessage> CommandReceivedEvent;
  20. public event Action<BotError> ErrorEvent;
  21. public ServerConfig ServerConfig;
  22. public IRC IRC;
  23. public Database Database;
  24. public List<Module> Modules;
  25. public bool Connected = false;
  26. public bool LoggedIn = false;
  27. public DateTime ConnectionTime;
  28. public DateTime LoadTime;
  29. public Dictionary<PrivilegeMode, AccessType> PrivilegeModeMapping = new Dictionary<PrivilegeMode, AccessType>() { { PrivilegeMode.v, AccessType.Voice }, { PrivilegeMode.h, AccessType.HalfOperator }, { PrivilegeMode.o, AccessType.Operator }, { PrivilegeMode.a, AccessType.SuperOperator }, { PrivilegeMode.q, AccessType.Founder } };
  30. public Dictionary<ChannelMode, AccessType> ChannelModeMapping = new Dictionary<ChannelMode, AccessType>() { { ChannelMode.v, AccessType.Voice }, { ChannelMode.h, AccessType.HalfOperator }, { ChannelMode.o, AccessType.Operator }, { ChannelMode.a, AccessType.SuperOperator }, { ChannelMode.q, AccessType.Founder } };
  31. private bool GhostSent;
  32. private int CurNickChoice;
  33. private int RetryCount;
  34. private bool RetryAllowed;
  35. public Bot(ServerConfig serverConfig)
  36. {
  37. Modules = new List<Module>();
  38. GhostSent = false;
  39. CurNickChoice = 0;
  40. RetryCount = 0;
  41. ServerConfig = serverConfig;
  42. LoadTime = DateTime.Now;
  43. ConnectionTime = DateTime.Now;
  44. IRC = new IRC(serverConfig.MaxMessageLength, serverConfig.MessageSendDelay);
  45. IRC.ConnectEvent += HandleConnectEvent;
  46. IRC.DisconnectEvent += HandleDisconnectEvent;
  47. IRC.Message.ServerReplyEvent += HandleReplyEvent;
  48. IRC.Message.ChannelMessageReceivedEvent += HandleChannelMessageReceivedEvent;
  49. IRC.Message.PrivateMessageReceivedEvent += HandlePrivateMessageReceivedEvent;
  50. IRC.Message.PrivateNoticeReceivedEvent += HandlePrivateNoticeReceivedEvent;
  51. IRC.Message.JoinChannelEvent += HandleJoinEvent;
  52. IRC.Message.KickEvent += HandleKickEvent;
  53. IRC.Message.ChannelModeChangeEvent += HandleChannelModeChangeEvent;
  54. Database = new Database(serverConfig.Database);
  55. Database.MysqlErrorEvent += HandleMysqlErrorEvent;
  56. LoadModules();
  57. }
  58. /// <summary>
  59. /// Trys to connect to one of the IPs of the given hostname. If the connection was successful, it will login the nick.
  60. /// </summary>
  61. public void Connect()
  62. {
  63. ConnectionTime = DateTime.Now;
  64. GhostSent = false;
  65. CurNickChoice = 0;
  66. RetryAllowed = ServerConfig.Reconnect;
  67. bool serverConnected = false;
  68. int i = 0;
  69. do
  70. {
  71. if (ServerConfig.Hosts.Count > i)
  72. {
  73. try
  74. {
  75. IPAddress[] ipList = Dns.GetHostAddresses(ServerConfig.Hosts[i].Host);
  76. foreach (IPAddress ip in ipList)
  77. {
  78. serverConnected = IRC.Connect(ip, ServerConfig.Hosts[i].Port);
  79. if (serverConnected)
  80. {
  81. break;
  82. }
  83. }
  84. i++;
  85. }
  86. catch (SocketException ex)
  87. {
  88. break;
  89. }
  90. }
  91. else
  92. {
  93. break;
  94. }
  95. }
  96. while (!serverConnected);
  97. if (serverConnected)
  98. {
  99. if (CurNickChoice < ServerConfig.Nicknames.Count)
  100. {
  101. IRC.Login(ServerConfig.Name, new Nick()
  102. {
  103. Nickname = ServerConfig.Nicknames[CurNickChoice],
  104. Host = Dns.GetHostName(),
  105. Realname = ServerConfig.Realname,
  106. Username = ServerConfig.Username
  107. });
  108. }
  109. else
  110. {
  111. Disconnect();
  112. }
  113. }
  114. else
  115. {
  116. Reconnect();
  117. }
  118. }
  119. /// <summary>
  120. /// Disconnects from the current server.
  121. /// </summary>
  122. public void Disconnect()
  123. {
  124. RetryAllowed = false;
  125. RetryCount = 0;
  126. IRC.Disconnect();
  127. Connected = false;
  128. LoggedIn = false;
  129. }
  130. private void Reconnect()
  131. {
  132. if (RetryAllowed)
  133. {
  134. if (ErrorEvent != null)
  135. {
  136. ErrorEvent(new BotError() { Message = string.Format("Retrying connection in {0} seconds.", (int)Math.Pow(2, RetryCount)), Type = ErrorType.IRC });
  137. }
  138. Task.Run(() =>
  139. {
  140. Thread.Sleep(1000 * (int)Math.Pow(2, RetryCount));
  141. RetryCount++;
  142. Connect();
  143. });
  144. }
  145. }
  146. private void HandleConnectEvent()
  147. {
  148. Connected = true;
  149. RetryCount = 0;
  150. }
  151. private void HandleDisconnectEvent()
  152. {
  153. Connected = false;
  154. Reconnect();
  155. }
  156. public void LoadModules()
  157. {
  158. // Get all config files from Module directory
  159. string[] moduleLocations = Directory.GetDirectories(ServerConfig.ModuleLocation);
  160. foreach (string location in moduleLocations)
  161. {
  162. LoadModule(location);
  163. }
  164. }
  165. public bool LoadModule(string module)
  166. {
  167. Module newModule = new Module();
  168. newModule.ConfigPath = module;
  169. newModule.LoadConfig();
  170. if (newModule.Enabled && !Modules.Exists(mod => mod.ClassName == newModule.ClassName))
  171. {
  172. if (File.Exists(string.Format(@"{0}\{1}.dll", module, newModule.Name)))
  173. {
  174. Module loadedModule = newModule.CreateInstance(this);
  175. if (loadedModule.Loaded)
  176. {
  177. loadedModule.ModuleErrorEvent += HandleModuleErrorEvent;
  178. Modules.Add(loadedModule);
  179. return true;
  180. }
  181. }
  182. }
  183. return false;
  184. }
  185. public void UnloadModules()
  186. {
  187. List<Module> moduleList = Modules;
  188. for (int i = 0; i < moduleList.Count; i++)
  189. {
  190. UnloadModule(moduleList[i].Name);
  191. }
  192. }
  193. public bool UnloadModule(string moduleName)
  194. {
  195. Module module = Modules.Find(mod => mod.Name.ToLower() == moduleName.ToLower());
  196. if (module != null)
  197. {
  198. module.Loaded = false;
  199. Modules.Remove(module);
  200. return true;
  201. }
  202. return false;
  203. }
  204. public bool CheckChannelAccess(string channel, string nickname, AccessType access)
  205. {
  206. Channel foundChannel = IRC.Channels.Find(chan => chan.Name == channel);
  207. if (foundChannel != null)
  208. {
  209. Nick foundNick = foundChannel.Nicks.Find(nick => nick.Nickname == nickname);
  210. if (foundNick != null)
  211. {
  212. for (int i = 0; i < foundNick.Privileges.Count; i++)
  213. {
  214. switch (PrivilegeModeMapping[foundNick.Privileges[i]])
  215. {
  216. case AccessType.User:
  217. if (access == AccessType.User)
  218. {
  219. return true;
  220. }
  221. break;
  222. case AccessType.Voice:
  223. if (access == AccessType.User || access == AccessType.Voice)
  224. {
  225. return true;
  226. }
  227. break;
  228. case AccessType.HalfOperator:
  229. if (access == AccessType.User || access == AccessType.Voice || access == AccessType.HalfOperator)
  230. {
  231. return true;
  232. }
  233. break;
  234. case AccessType.Operator:
  235. if (access == AccessType.User || access == AccessType.Voice || access == AccessType.HalfOperator || access == AccessType.Operator)
  236. {
  237. return true;
  238. }
  239. break;
  240. case AccessType.SuperOperator:
  241. if (access == AccessType.User || access == AccessType.Voice || access == AccessType.HalfOperator || access == AccessType.Operator || access == AccessType.SuperOperator)
  242. {
  243. return true;
  244. }
  245. break;
  246. case AccessType.Founder:
  247. if (access == AccessType.User || access == AccessType.Voice || access == AccessType.HalfOperator || access == AccessType.Operator || access == AccessType.SuperOperator || access == AccessType.Founder)
  248. {
  249. return true;
  250. }
  251. break;
  252. case AccessType.Owner:
  253. return true;
  254. break;
  255. }
  256. }
  257. }
  258. }
  259. return false;
  260. }
  261. public bool CheckChannelAccess(string channel, string nickname, List<AccessType> access)
  262. {
  263. bool hasAccess = false;
  264. for (int i = 0; i < access.Count; i++)
  265. {
  266. hasAccess = CheckChannelAccess(channel, nickname, access[i]);
  267. if (hasAccess)
  268. {
  269. break;
  270. }
  271. }
  272. return hasAccess;
  273. }
  274. public void ExecuteCommand(string message, string location, MessageType type)
  275. {
  276. ParseCommandMessage(DateTime.Now, message, new Nick { Nickname = IRC.Nickname }, location, type);
  277. }
  278. public bool IsCommand(string message)
  279. {
  280. bool isCommand = false;
  281. string[] msgArgs = message.Split(new[] {' '}, 2, StringSplitOptions.RemoveEmptyEntries);
  282. if (msgArgs.Any())
  283. {
  284. string command = msgArgs[0].Remove(0, ServerConfig.CommandPrefix.Length);
  285. // Find the module that contains the command
  286. Module module = Modules.Find(mod => mod.Commands.Exists(c => c.Triggers.Contains(command)) && mod.Loaded && mod.Enabled);
  287. if (module != null)
  288. {
  289. // Find the command
  290. Command cmd = module.Commands.Find(c => c.Triggers.Contains(command));
  291. if (cmd != null)
  292. {
  293. isCommand = true;
  294. }
  295. }
  296. }
  297. return isCommand;
  298. }
  299. private void HandleJoinEvent(object sender, JoinChannelInfo info)
  300. {
  301. if (info.Nick.Nickname == IRC.Nickname)
  302. {
  303. if (!ServerConfig.Channels.Exists(chan => chan.Name == info.Channel))
  304. {
  305. ChannelConfig chanConfig = new ChannelConfig();
  306. chanConfig.Name = info.Channel;
  307. ServerConfig.Channels.Add(chanConfig);
  308. ServerConfig.Save();
  309. }
  310. }
  311. }
  312. private void HandleKickEvent(object sender, KickInfo info)
  313. {
  314. if (info.KickedNick.Nickname == IRC.Nickname)
  315. {
  316. ServerConfig.Channels.RemoveAll(chan => chan.Name == info.Channel);
  317. ServerConfig.Save();
  318. }
  319. }
  320. private void HandleChannelModeChangeEvent(object sender, ChannelModeChangeInfo e)
  321. {
  322. ChannelConfig channel = ServerConfig.Channels.Find(chan => chan.Name == e.Channel);
  323. if (channel != null)
  324. {
  325. foreach (ChannelModeInfo mode in e.Modes)
  326. {
  327. switch (mode.Mode)
  328. {
  329. case ChannelMode.k:
  330. if (mode.Set)
  331. {
  332. channel.Key = mode.Parameter;
  333. }
  334. else
  335. {
  336. channel.Key = string.Empty;
  337. }
  338. ServerConfig.Save();
  339. break;
  340. }
  341. }
  342. }
  343. }
  344. private void HandleReplyEvent(object sender, IReply e)
  345. {
  346. if (e.GetType() == typeof(ServerReplyMessage))
  347. {
  348. ServerReplyMessage reply = (ServerReplyMessage)e;
  349. switch (reply.ReplyCode)
  350. {
  351. case IRCReplyCode.RPL_WELCOME:
  352. // If the reply is Welcome, that means we are fully connected to the server.
  353. LoggedIn = true;
  354. if (!GhostSent && IRC.Nickname != ServerConfig.Nicknames[CurNickChoice])
  355. {
  356. IRC.Command.SendPrivateMessage("NickServ", string.Format("GHOST {0} {1}", ServerConfig.Nicknames[CurNickChoice], ServerConfig.Password));
  357. Thread.Sleep(1000);
  358. IRC.Command.SendNick(ServerConfig.Nicknames[CurNickChoice]);
  359. GhostSent = true;
  360. }
  361. // Identify to NickServ if need be
  362. IRC.Command.SendPrivateMessage("NickServ", string.Format("IDENTIFY {0}", ServerConfig.Password));
  363. // Join all required channels
  364. // Delay joining channels for configured time
  365. Thread.Sleep(ServerConfig.JoinDelay);
  366. foreach (ChannelConfig channel in ServerConfig.Channels)
  367. {
  368. IRC.Command.SendJoin(channel.Name, channel.Key);
  369. }
  370. break;
  371. }
  372. }
  373. else if (e.GetType() == typeof(ServerErrorMessage))
  374. {
  375. ServerErrorMessage error = (ServerErrorMessage) e;
  376. switch (error.ErrorCode)
  377. {
  378. case IRCErrorCode.ERR_NOTREGISTERED:
  379. if (ServerConfig.AutoRegister && ServerConfig.Password != string.Empty && ServerConfig.Email != string.Empty)
  380. {
  381. IRC.Command.SendPrivateMessage("NickServ", string.Format("REGISTER {0} {1}", ServerConfig.Password, ServerConfig.Email));
  382. }
  383. break;
  384. case IRCErrorCode.ERR_NICKNAMEINUSE:
  385. if (LoggedIn == false)
  386. {
  387. string nick = string.Empty;
  388. if (IRC.Nickname == ServerConfig.Nicknames[CurNickChoice] && ServerConfig.Nicknames.Count > CurNickChoice + 1)
  389. {
  390. CurNickChoice++;
  391. nick = ServerConfig.Nicknames[CurNickChoice];
  392. }
  393. else
  394. {
  395. Random rand = new Random();
  396. nick = string.Format("{0}_{1}", ServerConfig.Nicknames.First(), rand.Next(100000).ToString());
  397. }
  398. IRC.Login(ServerConfig.Name, new Nick()
  399. {
  400. Nickname = nick,
  401. Host = Dns.GetHostName(),
  402. Realname = ServerConfig.Realname,
  403. Username = ServerConfig.Username
  404. });
  405. }
  406. break;
  407. }
  408. }
  409. }
  410. private void HandleChannelMessageReceivedEvent(object sender, ChannelMessage e)
  411. {
  412. // The message was a command
  413. if (e.Message.StartsWith(ServerConfig.CommandPrefix))
  414. {
  415. if (!ServerConfig.ChannelBlacklist.Contains(e.Channel)
  416. && !ServerConfig.NickBlacklist.Contains(e.Sender.Nickname)
  417. )
  418. {
  419. ParseCommandMessage(e.TimeStamp, e.Message, e.Sender, e.Channel, MessageType.Channel);
  420. }
  421. }
  422. }
  423. private void HandlePrivateMessageReceivedEvent(object sender, PrivateMessage e)
  424. {
  425. // The message was a command
  426. if (e.Message.StartsWith(ServerConfig.CommandPrefix))
  427. {
  428. if (!ServerConfig.NickBlacklist.Contains(e.Sender.Nickname))
  429. {
  430. ParseCommandMessage(e.TimeStamp, e.Message, e.Sender, e.Sender.Nickname, MessageType.Query);
  431. }
  432. }
  433. }
  434. private void HandlePrivateNoticeReceivedEvent(object sender, PrivateNotice e)
  435. {
  436. // The notice was a command
  437. if (e.Message.StartsWith(ServerConfig.CommandPrefix))
  438. {
  439. if (!ServerConfig.NickBlacklist.Contains(e.Sender.Nickname))
  440. {
  441. ParseCommandMessage(e.TimeStamp, e.Message, e.Sender, e.Sender.Nickname, MessageType.Notice);
  442. }
  443. }
  444. }
  445. private void ParseCommandMessage(DateTime timestamp, string message, Nick sender, string location, MessageType messageType)
  446. {
  447. // Extract command and arguments
  448. string[] msgArgs = message.Split(new[] { ' ' }, 2, StringSplitOptions.RemoveEmptyEntries);
  449. string command = msgArgs[0].Remove(0, ServerConfig.CommandPrefix.Length);
  450. List<string> argsOnly = msgArgs.ToList();
  451. argsOnly.RemoveAt(0);
  452. // Find the module that contains the command
  453. Module module = Modules.Find(mod => mod.Commands.Exists(c => c.Triggers.Contains(command)) && mod.Loaded && mod.Enabled);
  454. if (module != null)
  455. {
  456. // Find the command
  457. Command cmd = module.Commands.Find(c => c.Triggers.Contains(command));
  458. if (cmd != null)
  459. {
  460. CommandMessage newCommand = new CommandMessage();
  461. newCommand.Nick.Copy(sender);
  462. bool nickFound = false;
  463. IRC.Channels.ForEach(channel => channel.Nicks.ForEach(nick =>
  464. {
  465. if (nick.Nickname == newCommand.Nick.Nickname)
  466. {
  467. nickFound = true;
  468. newCommand.Nick.AddModes(nick.Modes);
  469. newCommand.Nick.AddPrivileges(nick.Privileges);
  470. }
  471. }));
  472. // Nickname has not been found, so need to run a query for nick's modes
  473. if (!nickFound)
  474. {
  475. string whoStyle = string.Format(@"[^\s]+\s[^\s]+\s[^\s]+\s[^\s]+\s({0})\s(?<Modes>[^\s]+)\s:[\d]\s(.+)", newCommand.Nick.Nickname);
  476. Regex whoRegex = new Regex(whoStyle);
  477. IRC.Command.SendWho(newCommand.Nick.Nickname);
  478. ServerReplyMessage whoReply = IRC.Message.GetServerReply(IRCReplyCode.RPL_WHOREPLY, whoStyle);
  479. if (whoReply != null && whoReply.ReplyCode != 0)
  480. {
  481. Match whoMatch = whoRegex.Match(whoReply.Message);
  482. List<UserModeInfo> modeInfoList = IRC.ParseUserModeString(whoMatch.Groups["Modes"].ToString());
  483. modeInfoList.ForEach(info =>
  484. {
  485. if (info.Set)
  486. {
  487. newCommand.Nick.AddMode(info.Mode);
  488. }
  489. });
  490. }
  491. }
  492. newCommand.TimeStamp = timestamp;
  493. newCommand.Location = location;
  494. newCommand.MessageType = messageType;
  495. newCommand.Command = command;
  496. // Check arguments against required arguments
  497. List<string> usedArgs = new List<string>();
  498. if (argsOnly.Any())
  499. {
  500. usedArgs.AddRange(argsOnly.First().Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).ToList());
  501. }
  502. List<CommandArgument> validArguments = cmd.GetValidArguments(usedArgs, messageType);
  503. if (argsOnly.Count > 0)
  504. {
  505. string[] argSplit = argsOnly.First().Split(new[] { ' ' }, validArguments.Count, StringSplitOptions.RemoveEmptyEntries);
  506. for (int i = 0; i < validArguments.Count && i <= argSplit.GetUpperBound(0); i++)
  507. {
  508. newCommand.Arguments.Add(validArguments[i].Name, argSplit[i]);
  509. }
  510. }
  511. bool invalidArgs = false;
  512. for (int i = 0; i < newCommand.Arguments.Count; i++)
  513. {
  514. if (validArguments[i].AllowedValues.Count > 0)
  515. {
  516. // Check to see if any of the arguments are invalid
  517. string argVal = newCommand.Arguments[validArguments[i].Name];
  518. if (!validArguments[i].AllowedValues.Exists(val => val.ToLower() == argVal.ToLower()))
  519. {
  520. invalidArgs = true;
  521. string argHelp = string.Format(" \u0002{0}\u0002", string.Join(" ", validArguments.Select(arg =>
  522. {
  523. string argString = string.Empty;
  524. if (arg.DependentArguments.Count > 0)
  525. {
  526. argString = "(";
  527. }
  528. if (arg.Required)
  529. {
  530. argString += "\u001F" + arg.Name + "\u001F";
  531. }
  532. else
  533. {
  534. argString += "[\u001F" + arg.Name + "\u001F]";
  535. }
  536. if (arg.DependentArguments.Count > 0)
  537. {
  538. argString += string.Format("\u0002:When {0}\u0002)", string.Join(" or ", arg.DependentArguments.Select(dep => { return string.Format("\u0002\u001F{0}\u001F\u0002=\u0002{1}\u0002", dep.Name, string.Join(",", dep.Values)); })));
  539. }
  540. return argString;
  541. })));
  542. string invalidMessage = string.Format("Invalid value for \u0002{0}\u0002 in \u0002{1}{2}\u0002{3}. Valid options are \u0002{4}\u0002.", validArguments[i].Name, ServerConfig.CommandPrefix, command, argHelp, string.Join(", ", validArguments[i].AllowedValues));
  543. module.SendResponse(messageType, location, sender.Nickname, invalidMessage);
  544. break;
  545. }
  546. }
  547. }
  548. if (validArguments.FindAll(arg => arg.Required).Count <= newCommand.Arguments.Count)
  549. {
  550. if (!invalidArgs)
  551. {
  552. if (CommandReceivedEvent != null)
  553. {
  554. CommandReceivedEvent(newCommand);
  555. }
  556. }
  557. }
  558. else
  559. {
  560. string argHelp = string.Format(" \u0002{0}\u0002", string.Join(" ", validArguments.Select(arg =>
  561. {
  562. string argString = string.Empty;
  563. if (arg.DependentArguments.Count > 0)
  564. {
  565. argString = "(";
  566. }
  567. if (arg.Required)
  568. {
  569. argString += "\u001F" + arg.Name + "\u001F";
  570. }
  571. else
  572. {
  573. argString += "[\u001F" + arg.Name + "\u001F]";
  574. }
  575. if (arg.DependentArguments.Count > 0)
  576. {
  577. argString += string.Format("\u0002:When {0}\u0002)", string.Join(" or ", arg.DependentArguments.Select(dep => { return string.Format("\u0002\u001F{0}\u001F\u0002=\u0002{1}\u0002", dep.Name, string.Join(",", dep.Values)); })));
  578. }
  579. return argString;
  580. })));
  581. string missingArgument = string.Format("Missing a required argument for \u0002{0}{1}\u0002{2}. The required arguments are \u0002{3}\u0002.", ServerConfig.CommandPrefix, command, argHelp, string.Join(", ", validArguments.Where(arg => arg.Required).Select(arg => arg.Name)));
  582. module.SendResponse(messageType, location, sender.Nickname, missingArgument);
  583. }
  584. }
  585. }
  586. }
  587. private void HandleMysqlErrorEvent(object sender, string message)
  588. {
  589. BotError error = new BotError();
  590. error.Message = message;
  591. error.Type = ErrorType.MySQL;
  592. if (ErrorEvent != null)
  593. {
  594. ErrorEvent(error);
  595. }
  596. }
  597. private void HandleModuleErrorEvent(object sender, string message)
  598. {
  599. BotError error = new BotError();
  600. error.Message = message;
  601. error.Type = ErrorType.Module;
  602. if (ErrorEvent != null)
  603. {
  604. ErrorEvent(error);
  605. }
  606. }
  607. }
  608. }