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 ±, emai 1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 捉交了一个封装pop3 i办议的类。该i办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。该类冇若干方法，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 csoc

2、kct作 为类成员，所以我能在线程中使用它下而是该类的编码及注释：/ / smtp.h: interface for the csmtp class./ /#if !defined(afx smtp ii 617f7e82 7f4d 11d1 88a0 00001c302581 includ eddefine afx_smtp_h_617f7e82_7f4d_lldl_88a0_00001c302581_included_ #if _msc_ver >二 1000spragma oncesendif / _msc_ver >= 1000ttdefine connecti0n_che

3、ck 0define hello_check 1#dcfinc mail_ciieck 2define rcpt_check 3define data_start_check 4ttdefine data_exd_check 5define qutt_check 6#dcfinc data_ciieck 7 class csmtppublic:bool ma订()；/ cstringgeterrormessage ();bool data(cstring subject, cstring body);cstringgetto ();bool setto(cstring to);cstringg

4、etfrom (); voidsetfrom(cstring from); bool mail (cstring from); bool disconnect (); cstringgethost (); voidsethost(cstring host);bool connect(cstring host, cstring me);bool connect (); csmtp (); virtual csmtp();private:cstringgeterror(cstring response);cstringm_errormcssagc;bool checkresponse (int t

5、ype); intm_noofto;cstringarraymto;cstringmfrom;csockctm_smtpservcr;cstringm_host;； _ttendif/ !defined (afx smtp ii 617f7e82 7f4d 11d1 88a0 00001c302581 include d_)/ smtp.cpp: implementation of the csmtp class/#include "stdafx.hinclude订send. hinclude "smtp. hitifdcf _debugffundef th1s_f1les

6、tatic char this_file=_file_;ttdefine new debug newitendif/ / construction/destruetion / /csmtp: csmtp ()m_noofto = 0;m_smtpserver. create(); _csmtp: "csmtp ()m_smtpserver. close (); _/ connect to the smtp serverbool csmtp:connect()return connect (in host, in_froin); ""/ connect to the

7、 smtp serverbool csmtp:connect(cstringhost, cstring from)if (!m smtpserver.connect (host,25) / 25 for smtp port"m_errormessage = _t("server cannot be connected"); return false;elseif (checkresponse (connect i on_ci1eck) =false) return false;charbuf 512;wsprintf (buf, "helo %srn,

8、(lpcstr) from); m_smtpserver. send(buf, strlen (buf); if (checkresponse(hello_check)二二false) return false;elsereturn true; return true;/ setting the host string void csmtp:sethost(cstring host) mj io st = host;/ returing the host string cstring csmtp:gethost()returnm_host; "/发送quit命令到smtp服务器： b

9、ool csmtp:disconnect()charbuf256;wsprintf (buf, "quit rn，z); m_smtpscrver. send (buf, strlcn (buf); 辻(checkresponse(qu1t_check)=false) return false;elsereturn true;/发送mail命令到smtp服务器: bool csmtp:mail(cstring from) charbuf256;wsprintf (buf, /zmail from:<%s>rnz/, (lpcstr) from); m smtpserver

10、. send (buf, strlen (buf);if (checkresponse (mail_check)二二false)return false;elsereturn true;/ setting the from string void csmtp:setfrom(cstring from) mfrom 二 from; / returing the from string cstring csmtp:getfromo rcturnmfrom; _/ setting the to string bool csmtp:setto(cstring to)charbuf256;m_to. a

11、dd(to); / saving vale of towsprintf (buf, rcpt t0:s>rn， (lpcstr) to); m_smtpscrver. send(buf, strlcn (buf); if (checkresponse (rcpt_check)=false) return false;elsereturn true;/ returing the to stringcstring csmtp:getto()辻(m_to. getsize()>=m_noofto) 一 一m_noofto+; returnm_tom_noofto-l; "&qu

12、ot;elsereturn _t(no more to available/，); "/发送data命令到smtp服务器:bool csmtp:data (cstring subject, cstring body)charbuf256;wsprintf (buf, ，zdatarn，z);m smtpserver. send (buf, strlen (buf);if (checkresponse (data_check)二二false)return false;elsewsprintf (buf, "subject:%srn/z, (lpcstr) subject);

13、m smtpserver. send(buf, strlen (buf);wsprintf (buf, "%srn", (lpcstr) body);m smtpserver send(buf, strlen (buf);wsprintf (buf, rn)； m_smtpscrvcr. send(buf, strlen (buf);return true;/本方法检查服务器的响应：bool csmtp:checkresponse(int type)charbuf 1000;char temp3;for (int i=0;i < 512;i+) buf i二'

14、0'/从服务器接收数据m_smtpserver receive (buf, sizeof (buf);strncpy (temp, buf, 3);int temp2 二 atoi (temp);switch (type)case connecti0n_check:if (temp2 != 220)m_errormessage 二 geterror(lpctstr)buf); rcturn false;break;caseiiello_ciieck:if (temp2 != 250)casemerrormessage return false;break;mail_check:if (

15、temp2 !二 250)m_errormcssagc return false;geterror(lpctstr)buf);gcterror(lpctstr)buf);casecasecasecasebreak;rcpt_check:if (tcmp2 != 250)m errormessage = geterror (lpctstr)buf); return false;break;data_start_check:if (temp2 != 354)m_errormessage 二 geterror (lpctstr)buf); return false;break;data_end_ch

16、eck:if (temp2 != 250)m_errormessage = geterror(lpctstr)buf); return false;break;quit_ciieck:if (temp2 != 221)merrormessage 二 geterror(lpctstr)buf); return false;casebreak;data_check:if (temp2 !二 354) m_errormessage = geterror(lpctstr)buf); return false;break; return true;/返回错误消息cstring csmtp:geterro

17、rmessage()returnmerrormessage; "/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");i.f (response. find (214) return _t(help message");if (response.find ("220") return _t("service

18、 is ready");if (response. find ("221") return _t("service closing transmission channel");if (response.find ("250") return _t("requested mail action okay, completed'7);if(response. find (251) return _t(z，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 “)+rcsponsc;/ just overloading of the mail metho