POP3协议类库

POP3协议类库 在Internet中，e_mail是用途最广的应用程序。通常e_mail系统使用SMTP协议作为邮件 发送协议，使用POP3作为邮件接收协议。在WINDOWS环境中我们可以使用MAPI作e_mail操 作，但它不能直接连接到e_mail服务器。

这里我们提供了一个POP 3 协议类。在这个类中我们使用CSocket作为类变量， 目的是 我们能在线程中使用它。 下面是代码源程序。

/*-------------------------------------------------------------------- Pop.h : main header file for the POP application ------------------------------------------------------------------*/

#if !defined(AFX_POP_H__A44B38B6_697C_11D1_881E_00001C302581__INCLUDED_) #define AFX_POP_H__A44B38B6_697C_11D1_881E_00001C302581__INCLUDED_

#define CONNECTION_CHECK 0 #define USER_CHECK 1 #define PASSWORD_CHECK 2 #define QUIT_CHECK 3 #define DELETE_CHECK 4 #define RSET_CHECK 5 #define STAT_CHECK 6 #define NOOP_CHECK 7 #define LIST_CHECK 8 #define RETR_CHECK 9

/////////////////////////////////////////////////////////////////////// class CPop { public: BOOL List(); CWordArraym_SizeOfMsg; CStringGetErrorMessage(); // If there is any error this will return it method CStringGetPassword(); // Getting Password stored in class void SetPassword(CString& Password); // Setting Password in class CStringGetUser(); // Getting user name stored in class void SetUser(CString& User); // Setting user name in class CStringGetHost(); // Getting Host name (email server name) stored in class void SetHost(CString& Host); // Setting Host name (email server name) in class BOOL Connect(); // Connecting to email server intGetTotalMailSize(); // it returns the Total Mail Size intGetNumberOfMails(); // It return the number of mails CStringGetMsgContents(); BOOL Statistics(); // issue the STAT command on email server BOOL Retrieve(intMsgNumber); // Getting any particular mail message BOOL Reset(); // issue the reset command on email server intGetMessageSize(intMsgNumber); // Return a size of any particular mail BOOL Noop(); // issue the NOOP command on email server BOOL Disconnect(); // issue the QUIT command on email server BOOL Delete(int&MsgNumber); // Deleteing a particular message from email server BOOL Connect(CString& Host, CString& User, CString& Password); CPop(); virtual ~CPop();

private: CStringm_ErrorMessage; BOOL CheckResponse(intResponseType); CStringm_Password; CStringm_User; CStringm_Host; CStringm_MsgContents; intm_TotalSize; intm_NumberMail; CSocketm_PopServer; }; /#endif // !defined(AFX_POP_H__A44B38B6_697C_11D1_881E_00001C302581__INCLUDED_)

/*---------------------------------------------------------------- // Pop.cpp : Defines the class behaviors for the application. ------------------------------------------------------------------*/

#include "stdafx.h" #include "Pop.h"

#ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif

//////////////////////////////////////////////////////////////////// // CPop Class ///////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////// // Construction/Destruction //////////////////////////////////////////////////////////////////

CPop::CPop() { m_PopServer.Create(); } //{4EEC1C91-6BE1-11d1-8824-00001C302581}

CPop::~CPop() { m_PopServer.Close(); }

BOOL CPop::Connect(CString& Host, CString& User, CString& Password) { char buf [512];

if (!m_PopServer.Connect(Host,110)) // 110 Pop3 Port { m_ErrorMessage = _T("Server cannot be connected"); return FALSE; } else { if(CheckResponse(CONNECTION_CHECK)==FALSE) return FALSE; wsprintf (buf, "USER %s\r\n", (LPCSTR) User); m_PopServer.Send(buf, strlen (buf)); if(CheckResponse(USER_CHECK)==FALSE) return FALSE;

wsprintf (buf, "PASS %s\r\n", (LPCSTR) Password); m_PopServer.Send(buf, strlen (buf)); if (CheckResponse(PASSWORD_CHECK)==FALSE) return FALSE;

return TRUE; }

} BOOL CPop::Delete(int&MsgNumber) { char buf [512];

wsprintf (buf, "DELE %d\r\n",MsgNumber ); m_PopServer.Send(buf, strlen (buf)); if (CheckResponse(DELETE_CHECK)==FALSE) return FALSE; else return TRUE; }

BOOL CPop::Disconnect() { char buf [512];

wsprintf (buf, "QUIT \r\n"); m_PopServer.Send(buf, strlen (buf)); if (CheckResponse(QUIT_CHECK)==FALSE) return FALSE; else return TRUE; }

BOOL CPop::Noop() { char buf [512];