ICQ-клиент

Автор: Пользователь скрыл имя, 08 Апреля 2012 в 14:17, курсовая работа

Описание работы

В первые годы существования Всемирной паутины пользователи общались преимущественно через электронную почту, но отправлять письма было неудобно и даже нерационально, если оба собеседника одновременно находились в Интернете. Все изменилось, когда появились первые программы мгновенного общения или, менее официально, мессенджеры или интернет-пейджеры.

Содержание

Введение 5
1 Аналитический обзор литературы
1.1 Анализ предметной области
1.2 Сравнительная характеристика существующих аналогов 8
1.3 Постановка задачи 10
2 Модели, положенные в основу ПС
2.1 Функциональные модели
2.2 Разработка спецификации требований к программному средству 13
3 Разработка программного средства
3.1 Обоснование выбора среды разаработки
3.2 Особенности реализации
3.3 Разработка программной архитектуры
4 Тестирование программного средства
5 Методика работы с программным средством 20
Заключение
Список использованных источников
Приложение A. Листинг программного средства

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ПРИЛОЖЕНИЕ А

ЛИСТИНГ ПРОГРАММНОГО СРЕДСТВА

using System;

using System.Collections;

using System.IO;

using System.Security.Cryptography;

using System.Text;

using csammisrun.OscarLib.Utility;

namespace csammisrun.OscarLib

{

#region Logged in / out exceptions

/// <summary>

/// Thrown when an operation is requested that requires the <see cref="Session"/>

/// to be logged in

/// </summary>

public class NotLoggedInException : Exception

{

}

/// <summary>

/// Thrown when an operation is requested that requires the <see cref="Session"/>

/// to be logged out

/// </summary>

public class LoggedInException : Exception

{

private readonly string _message;

/// <summary>

/// Creates a new LoggedInException with a blank message

/// </summary>

public LoggedInException()

{

_message = "";

}

/// <summary>

/// Creates a new LoggedInException

/// </summary>

/// <param name="message">The message to be passed with the exception</param>

public LoggedInException(string message)

{

_message = message;

}

/// <summary>

/// Gets a message that describes the current exception

/// </summary>

public override string Message

{

get { return _message; }

}

#endregion

/// <summary>

/// The representation of an AOL Instant Messenger or ICQ session

/// </summary>

public class Session

{

private readonly OSCARIdentification _clientid = new OSCARIdentification();

private readonly string _password;

private readonly Hashtable _requestidstorage = new Hashtable();

private readonly AuthorizationManager authManager;

private readonly ChatRoomManager chatRoomManager;

private readonly ConnectionManager connectionManager;

private readonly PacketDispatcher dispatcher = new PacketDispatcher();

private readonly FamilyManager familyManager = new FamilyManager();

private readonly GraphicsManager graphicsManager;

private readonly IcqManager icqManager;

private readonly LimitManager limitManager = new LimitManager();

private readonly MessageManager messageManager;

private readonly RateClassManager rateManager;

private readonly SearchManager searchManager;

private readonly ServiceManager serviceManager;

private readonly SSIManager ssiManager;

private readonly StatusManager statusManager;

private Capabilities _caps = Capabilities.OscarLib;

private bool _loggedin;

private ushort _loginport = 5190;

private ushort _parametercount;

private PrivacySetting _privacy;

private bool _publicidletime;

private string _screenname;

/// <summary>

/// Create a new OSCAR session

/// </summary>

/// <param name="screenname">The screenname to log in</param>

/// <param name="password">The password associated with the screenname</param>

/// <exception cref="ArgumentException">Thrown when <paramref name="screenname"/> is not

/// a valid AIM or ICQ screenname.</exception>

public Session(string screenname, string password)

{

// Check to make sure the screenname is something valid

if (!ScreennameVerifier.IsValidAIM(screenname) &&

!ScreennameVerifier.IsValidICQ(screenname))

{

throw new ArgumentException(screenname + " is not a valid AIM or ICQ screenname", "screenname");

}

// Save parameter values

_screenname = screenname;

_password = password;

connectionManager = new ConnectionManager(this);

serviceManager = new ServiceManager(this);

ssiManager = new SSIManager(this);

icqManager = new IcqManager(this);

messageManager = new MessageManager(this);

statusManager = new StatusManager(this);

chatRoomManager = new ChatRoomManager(this);

graphicsManager = new GraphicsManager(this);

authManager = new AuthorizationManager(this);

searchManager = new SearchManager(this);

rateManager = new RateClassManager(this);

connectionManager.CreateNewConnection(0x0017);

// Create a default set of capabilities for this session

SetDefaultIdentification();

// Set up some default values for public properties

_publicidletime = true;

// Set initial values for internal properties

_loggedin = false;

_privacy = PrivacySetting.AllowAllUsers;

_parametercount = 0;

}

#region Public methods

/// <summary>

/// Sets the session's <see cref="ClientIdentification"/> to the AOL defaults

/// </summary>

/// <exception cref="LoggedInException">Thrown when the <see cref="Session"/> is already logged in</exception>

public void SetDefaultIdentification()

{

if (LoggedIn)

{

throw new LoggedInException("Identification cannot be changed after the session is logged in");

}

_clientid.ClientName = Constants.CLIENT_NAME;

_clientid.ClientId = Constants.CLIENT_ID;

_clientid.ClientMajor = Constants.CLIENT_MAJOR;

_clientid.ClientMinor = Constants.CLIENT_MINOR;

_clientid.ClientLesser = Constants.CLIENT_LESSER;

_clientid.ClientBuild = Constants.CLIENT_BUILD;

_clientid.ClientDistribution = Constants.CLIENT_DISTRIBUTION;

}

/// <summary>

/// Initialize the logging system

/// </summary>

/// <param name="baseDir">The directory in which to save log files</param>

/// <returns>The full logfile path</returns>

public string InitializeLogger(string baseDir)

{

// Initialize the logging system

DateTime currentTime = DateTime.Now;

string logfileName = String.Empty;

logfileName += ScreenName + "_";

logfileName += currentTime.Year.ToString("0000") + "-" + currentTime.Month.ToString("00") + "-" +

currentTime.Day.ToString("00") + "_";

logfileName += currentTime.Hour.ToString("00") + "." + currentTime.Minute.ToString("00") + "." +

currentTime.Second.ToString("00") + ".";

logfileName += currentTime.Millisecond.ToString("000") + "_";

logfileName += "OscarLib.log";

string logFilePath = Path.Combine(baseDir, logfileName);

if (!Directory.Exists(Path.GetDirectoryName(logFilePath)))

{

Directory.CreateDirectory(Path.GetDirectoryName(logFilePath));

}

Logging.sw = new StreamWriter(logFilePath);

return logFilePath;

}

/// <summary>

/// Begins the process of logging in to the OSCAR service

/// </summary>

/// <param name="loginserver">The OSCAR login server</param>

/// <param name="port">The OSCAR service port</param>

/// <remarks>

/// <para>

/// This function is non-blocking, because the login process does not happen

/// instantly. The OSCAR library will raise the <see cref="Session.LoginCompleted"/> event

/// when the login process has finished successfully.

/// </para>

/// <para>

/// The OSCAR library raises periodic status update events throughout the login process

/// via the <see cref="Session.StatusUpdate"/> event.

/// </para>

/// <para>

/// Errors may occur during the login process; if an error occurs, the OSCAR library raises

/// the <see cref="Session.ErrorMessage"/> event, and stops the remaining login sequence.

/// </para>

/// </remarks>

/// <exception cref="LoggedInException">Thrown when the <see cref="Session"/> is already logged in</exception>

public void Logon(string loginserver, int port)

{

if (LoggedIn)

{

throw new LoggedInException();

}

LoggedIn = false;

Authorization.LoginToService(loginserver, port);

OnLoginStatusUpdate("Connecting...", 0.00);

}

/// <summary>

/// Disconnects all active OSCAR connections and resets the session

/// </summary>

public void Logoff()

{

LoggedIn = false;

foreach (Connection conn in connectionManager.UniqueConnections())

{

conn.DisconnectFromServer(false);

}

/// <summary>

/// Adds a buddy to the client's server-side buddy list

/// </summary>

/// <param name="screenname">The screenname of the buddy to add</param>

/// <param name="parentID">The ID of the parent group of the buddy</param>

/// <param name="index">The index of the buddy in the group</param>

/// <param name="alias">The alias of the buddy ("" for none)</param>

/// <param name="email">The email address of the buddy ("" for none)</param>

/// <param name="comment">The comment to be stored for the buddy ("" for none)</param>

/// <param name="SMS">The SMS number for the buddy ("" for none)</param>

/// <param name="soundfile">The soundfile for the buddy ("" for none)</param>

/// <param name="authorziationRequired"><c>true</c> if we require authorization for this buddy, <c>false</c> otherwise</param>

///<param name="authorizationReason">The authorization reason/message that will be send to the client</param>

/// <exception cref="NotLoggedInException">Thrown when the <see cref="Session"/> is not logged in</exception>

/// <remarks>This function will probably not remain here; the SSI Manager will be made public</remarks>

[Obsolete(

"This method is obsolete and will be removed soon. Use the overloaded AddBuddy method without the index parameter."

)]

public void AddBuddy(string screenname, ushort parentID, int index, string alias, string email, string comment,

string SMS, string soundfile, bool authorziationRequired, string authorizationReason)

{

if (!LoggedIn)

{

throw new NotLoggedInException();

}

SSI.AddBuddy(screenname, parentID, index, alias, email, SMS, comment, soundfile, authorziationRequired,

authorizationReason);