一个POP3协议的封装类

一个POP3协议的封装类

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在Internet上，电子邮件（E-MAIL）应用的非常广泛。通过它，用户可以很容易的 发送和接受信息。 通常，E-MAIL系统使用SMTP（发送邮件）和POP3（接收邮件）。有关此类协议更详 细的内容请参考RCF 821 (SMTP协议) and RFC 1225 ( POP3协议)。WINDOWS提供了 MAPI处理E-MAIL，但是它对直接与E-MAIL服务器通讯没有提供足够的功能。 这里是我自己编写的一个POP3协议的类，在这个类里我用CSocket 作为类的成员变 量，因此，我能在线程中使用。而且，POP3类的很多方法类似于POP3协议的命令。 下面是详细的代码： /*-------------------------------------------------------------------- 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(); CWordArray m_SizeOfMsg; CString GetErrorMessage(); // If there is any error this will return it method CString GetPassword(); // Getting Password stored in class void SetPassword(CString& Password); // Setting Password in class CString GetUser(); // Getting user name stored in class void SetUser(CString& User); // Setting user name in class CString GetHost(); // 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 int GetTotalMailSize(); // it returns the Total Mail Size int GetNumberOfMails(); // It return the number of mails CString GetMsgContents(); BOOL Statistics(); // issue the STAT command on email server BOOL Retrieve(int MsgNumber); // Getting any particular mail message BOOL Reset(); // issue the reset command on email server int GetMessageSize(int MsgNumber); // 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: CString m_ErrorMessage; BOOL CheckResponse(int ResponseType); CString m_Password; CString m_User; CString m_Host; CString m_MsgContents; int m_TotalSize; int m_NumberMail; CSocket m_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]; wsprintf (buf, "NOOP /r/n"); m_PopServer.Send(buf, strlen (buf)); if (CheckResponse(NOOP_CHECK)==FALSE) return FALSE; else return TRUE; } // Return the Msg Size for given msg number int CPop::GetMessageSize(int MsgNumber) { if(m_SizeOfMsg.GetSize() < MsgNumber+1) return 0; else return m_SizeOfMsg[MsgNumber+1]; } BOOL CPop::Reset() { char buf [512]; wsprintf (buf, "RSET /r/n"); m_PopServer.Send(buf, strlen (buf)); if (CheckResponse(RSET_CHECK)==FALSE) return FALSE; else return TRUE; } // MsgContents will hold the msg body BOOL CPop::Retrieve(int MsgNumber) { char buf [512]; wsprintf (buf, "RETR %d/r/n",MsgNumber ); m_PopServer.Send(buf, strlen (buf)); if (CheckResponse(RETR_CHECK)==FALSE) return FALSE; else return TRUE; } BOOL CPop::Statistics() { char buf [512]; wsprintf (buf, "STAT /r/n"); m_PopServer.Send(buf, strlen (buf)); if (CheckResponse(STAT_CHECK)==FALSE) return FALSE; else return TRUE; } CString CPop::GetMsgContents() { return m_MsgContents; } int CPop::GetNumberOfMails() { return m_NumberMail; } int CPop::GetTotalMailSize() { return m_TotalSize; } BOOL CPop::Connect() { Connect(m_Host, m_User, m_Password); return TRUE; } void CPop::SetHost(CString & Host) { m_Host = Host; } CString CPop::GetHost() { return m_Host; } void CPop::SetUser(CString & User) { m_User = User; } CString CPop::GetUser() { return m_User; } void CPop::SetPassword(CString & Password) { m_Password = Password; } CString CPop::GetPassword() { return m_Password; } BOOL CPop::CheckResponse(int ResponseType) { char buf [1000]; for (int i=0;i<512;i++) buf[i]='/0'; m_PopServer.Receive(buf, sizeof(buf)); switch (ResponseType) { case CONNECTION_CHECK: if (strnicmp(buf,"-ERR", 4) == 0) { m_ErrorMessage = _T("Bad Connection"); return FALSE; } break; case USER_CHECK: if (strnicmp(buf,"-ERR", 4) == 0) { m_ErrorMessage = _T("Bad User Name"); return FALSE; } break; case PASSWORD_CHECK: if (strnicmp(buf,"-ERR", 4) == 0) { m_ErrorMessage = _T("Bad Password Name"); return FALSE; } break; case QUIT_CHECK: if (strnicmp(buf,"-ERR", 4) == 0) { m_ErrorMessage = _T("Error occured during QUIT"); return FALSE; } break; case DELETE_CHECK: if (strnicmp(buf,"-ERR", 4) == 0) { m_ErrorMessage = _T("Error occured during DELE"); return FALSE; } break; case RSET_CHECK: if (strnicmp(buf,"-ERR", 4) == 0) { m_ErrorMessage = _T("Error occured during RSET"); return FALSE; } break; case STAT_CHECK: if (strnicmp(buf,"-ERR", 4) == 0) { m_ErrorMessage = _T("Error occured during STAT"); return FALSE; } else { BOOL EmailNumber = TRUE; for (char *p = buf; *p != '/0'; p++) { if (*p == '/t' || *p == ' ') { if(EmailNumber == TRUE) { m_NumberMail = atoi(p); EmailNumber = FALSE; } else { m_TotalSize = atoi(p); return TRUE; } } } } break; case NOOP_CHECK: if (strnicmp(buf,"-ERR", 4) == 0) { m_ErrorMessage = _T("Error occured during NOOP"); return FALSE; } break; case LIST_CHECK: if (strnicmp(buf,"-ERR", 4) == 0) { m_ErrorMessage = _T("Error occured during LIST"); return FALSE; } else { m_PopServer.Receive(buf, sizeof(buf)); for (char *p = buf; *p != '.'; p++) if (*p == '/t' || *p == ' ') m_SizeOfMsg.Add(atoi(p)); } break; case RETR_CHECK: if (strnicmp(buf,"-ERR", 4) == 0) { m_ErrorMessage = _T("Error occured during RETR"); return FALSE; } else { char temp[9000]; m_PopServer.Receive(temp, sizeof(temp)); m_MsgContents = temp; } break; } return TRUE; } CString CPop::GetErrorMessage() { return m_ErrorMessage; } BOOL CPop::List() { char buf [512]; wsprintf (buf, "LIST /r/n"); m_PopServer.Send(buf, strlen (buf)); if (CheckResponse(LIST_CHECK)==FALSE) return FALSE; else return TRUE; }