简单邮件传输协议SMTP封装类

1、简单邮件传输协议SMTP封装类 在Internet上,Email是最流行的传输媒体。这篇文章包括两个协议：. POP 3 协议： POP3协议（邮政传输协议）就是指从Email服务器接收信件。我已经提交了一个封装POP3协议的类。该协议官方的描述你可查阅RFC1225。 SMTP协议： SMTP (简单邮件传输协议） 指发送邮件到它的目的地。 有关SMTP 协议的细节你可参考RCF 821 .我最新地贡献是封装了SMTP协议。我不能完全实现 SMTP协议但你可用它在许多应用场合发送邮件。该类有若干方法，我选方法名同SMTP命令， 所以你很容易理解。 在该类中，我再一次使用了CSocket作为类

2、成员,所以我能在线程中使用它. 下面是该类的编码及注释： / SMTP.h: interface for the CSMTP class./#if !defined(AFX_SMTP_H_617F7E82_7F4D_11D1_88A0_00001C302581_INCLUDED_)#define AFX_SMTP_H_617F7E82_7F4D_11D1_88A0_00001C302581_INCLUDED_#if _MSC_VER >= 1000#pragma once#endif / _MSC_VER >= 1000#define CONNECTION_CHECK 0#defi

3、ne HELLO_CHECK 1#define MAIL_CHECK 2#define RCPT_CHECK 3#define DATA_START_CHECK 4#define DATA_END_CHECK 5#define QUIT_CHECK 6#define DATA_CHECK 7class CSMTP public:BOOL Mail(); / CString GetErrorMessage();BOOL Data(CString Subject, CString Body);CString GetTo();BOOL SetTo(CString to);CString GetFro

4、m();void SetFrom(CString from);BOOL Mail(CString from);BOOL Disconnect();CString GetHost();void SetHost(CString Host);BOOL Connect(CString Host, CString Me);BOOL Connect();CSMTP();virtual CSMTP();private:CString GetError(CString Response);CString m_ErrorMessage;BOOL CheckResponse(int Type);int m_NoO

5、fTo;CStringArray m_To;CString m_From;CSocket m_SMTPServer;CString m_Host; ;#endif / !defined(AFX_SMTP_H_617F7E82_7F4D_11D1_88A0_00001C302581_INCLUDED_)/ SMTP.cpp: implementation of the CSMTP class./#include "stdafx.h"#include "MailSend.h"#include "SMTP.h"#ifdef _DEBUG#u

6、ndef THIS_FILEstatic char THIS_FILE=_FILE_;#define new DEBUG_NEW#endif/ Construction/Destruction/CSMTP:CSMTP()m_NoOfTo = 0;m_SMTPServer.Create();CSMTP:CSMTP()m_SMTPServer.Close();/ Connect to the SMTP ServerBOOL CSMTP:Connect()return Connect(m_Host,m_From);/ Connect to the SMTP ServerBOOL CSMTP:Conn

7、ect(CString Host,CString From)if (!m_SMTPServer.Connect(Host,25) / 25 for SMTP Portm_ErrorMessage = _T("Server cannot be connected");return FALSE;elseif(CheckResponse(CONNECTION_CHECK)=FALSE)return FALSE;char buf 512;wsprintf (buf, "HELO %srn", (LPCSTR) From);m_SMTPServer.Send(bu

8、f, strlen (buf); if (CheckResponse(HELLO_CHECK)=FALSE)return FALSE;else return TRUE; return TRUE;/ Setting the Host Stringvoid CSMTP:SetHost(CString Host)m_Host = Host;/ Returing the Host StringCString CSMTP:GetHost()return m_Host;/ 发送"QUIT"命令到SMTP服务器：BOOL CSMTP:Disconnect()char buf256;wsp

9、rintf (buf, "QUIT rn");m_SMTPServer.Send(buf, strlen (buf); if (CheckResponse(QUIT_CHECK)=FALSE)return FALSE;else return TRUE;/ 发送"MAIL" 命令到SMTP服务器：BOOL CSMTP:Mail(CString from)char buf256;wsprintf (buf, "MAIL From:<%s>rn", (LPCSTR) from);m_SMTPServer.Send(buf, st

10、rlen (buf); if (CheckResponse(MAIL_CHECK)=FALSE)return FALSE;else return TRUE; / Setting the From stringvoid CSMTP:SetFrom(CString from)m_From = from;/ Returing the From stringCString CSMTP:GetFrom()return m_From;/ Setting the TO stringBOOL CSMTP:SetTo(CString to)char buf256;m_To.Add(to); / Saving v

11、ale of towsprintf (buf, "RCPT TO:<%s>rn", (LPCSTR) to);m_SMTPServer.Send(buf, strlen (buf); if (CheckResponse(RCPT_CHECK)=FALSE)return FALSE;else return TRUE; / Returing the TO stringCString CSMTP:GetTo() if(m_To.GetSize()>=m_NoOfTo)m_NoOfTo+;return m_Tom_NoOfTo-1;elsereturn _T(&q

12、uot;No more To available");/ 发送"DATA" 命令到 SMTP 服务器：BOOL CSMTP:Data(CString Subject, CString Body)char buf256;wsprintf (buf, "DATArn");m_SMTPServer.Send(buf, strlen (buf); if (CheckResponse(DATA_CHECK)=FALSE)return FALSE;else wsprintf (buf, "SUBJECT:%srn", (LPCSTR)

13、Subject);m_SMTPServer.Send(buf, strlen (buf); wsprintf (buf, "%srn", (LPCSTR) Body);m_SMTPServer.Send(buf, strlen (buf); wsprintf (buf, ".rn");m_SMTPServer.Send(buf, strlen (buf); return TRUE;/本方法检查服务器的响应： BOOL CSMTP:CheckResponse(int Type)char buf 1000;char temp3;for (int i=0;i

14、< 512;i+)bufi='0'/从服务器接收数据m_SMTPServer.Receive(buf, sizeof(buf);strncpy(temp,buf,3);int temp2 = atoi(temp);switch (Type)case CONNECTION_CHECK:if (temp2 != 220)m_ErrorMessage = GetError(LPCTSTR)buf);return FALSE; break;case HELLO_CHECK:if (temp2 != 250)m_ErrorMessage = GetError(LPCTSTR)buf

15、);return FALSE; break;case MAIL_CHECK:if (temp2 != 250)m_ErrorMessage = GetError(LPCTSTR)buf);return FALSE; break;case RCPT_CHECK:if (temp2 != 250)m_ErrorMessage = GetError(LPCTSTR)buf);return FALSE; break;case DATA_START_CHECK:if (temp2 != 354)m_ErrorMessage = GetError(LPCTSTR)buf);return FALSE; br

16、eak;case DATA_END_CHECK:if (temp2 != 250)m_ErrorMessage = GetError(LPCTSTR)buf);return FALSE; break;case QUIT_CHECK:if (temp2 != 221)m_ErrorMessage = GetError(LPCTSTR)buf);return FALSE; break;case DATA_CHECK:if (temp2 != 354)m_ErrorMessage = GetError(LPCTSTR)buf);return FALSE; break;return TRUE;/ 返回

17、错误消息CString CSMTP:GetErrorMessage()return m_ErrorMessage;/ 按照错误号准备错误信息CString CSMTP:GetError(CString Response)if(Response.Find("211")return _T("System status or system help reply");if(Response.Find("214")return _T("Help Message");if(Response.Find("220&quo

18、t;)return _T("Service is ready");if(Response.Find("221")return _T("Service closing transmission channel");if(Response.Find("250")return _T("Requested mail action okay, completed");if(Response.Find("251")return _T("user not local: will forward to forward path");if(Response.Find("354")return _T("Start mail input; end with .");return _T("No Error Number is matched with ")+Response;/ Just over