Email客户端源代码程序共大家学习

// MailMessage.cpp: implementation of the CMailMessage class. // Copyright (c) 1998, Wes Clyburn // // Modified to have Header and Body handling in this class rather than in any // class that uses instances of CMailMessage. // Copyright (c) 1998 Michael Krebs ////////////////////////////////////////////////////////////////////// #include "stdafx.h" #include "MailMessage.h" #ifdef _DEBUG #undef THIS_FILE static char THIS_FILE[]=__FILE__; #define new DEBUG_NEW #endif ////////////////////////////////////////////////////////////////////// // Construction/Destruction ////////////////////////////////////////////////////////////////////// CMailMessage::CMailMessage() { m_sBody=_T(""); m_sHeader=_T(""); } CMailMessage::~CMailMessage() { } BOOL CMailMessage::AddRecipient( LPCTSTR szEmailAddress, LPCTSTR szFriendlyName) { ASSERT( szEmailAddress != NULL ); ASSERT( szFriendlyName != NULL ); CRecipient to; to.m_sEmailAddress = szEmailAddress; to.m_sFriendlyName = szFriendlyName; m_Recipients.Add( to ); return TRUE; } // sEmailAddress and sFriendlyName are OUTPUT parameters. // If the function fails, it will return FALSE, and the OUTPUT // parameters will not be touched. BOOL CMailMessage::GetRecipient(CString & sEmailAddress, CString & sFriendlyName, int nIndex) { CRecipient to; if( nIndex < 0 || nIndex > m_Recipients.GetUpperBound() ) return FALSE; to = m_Recipients[ nIndex ]; sEmailAddress = to.m_sEmailAddress; sFriendlyName = to.m_sFriendlyName; return TRUE; } int CMailMessage::GetNumRecipients() { return m_Recipients.GetSize(); } BOOL CMailMessage::AddMultipleRecipients(LPCTSTR szRecipients ) { TCHAR* buf; UINT pos; UINT start; CString sTemp; CString sEmail; CString sFriendly; UINT length; int nMark; int nMark2; ASSERT( szRecipients != NULL ); // Add Recipients // length = strlen( szRecipients ); buf = new TCHAR[ length + 1 ]; // Allocate a work area (don't touch parameter itself) strcpy( buf, szRecipients ); for( pos = 0, start = 0; pos <= length; pos++ ) { if( buf[ pos ] == ';' || buf[ pos ] == 0 ) { // First, pick apart the sub-strings (separated by ';') // Store it in sTemp. // buf[ pos ] = 0; // Redundant when at the end of string, but who cares. sTemp = &buf[ start ]; // Now divide the substring into friendly names and e-mail addresses. // nMark = sTemp.Find( '<' ); if( nMark >= 0 ) { sFriendly = sTemp.Left( nMark ); nMark2 = sTemp.Find( '>' ); if( nMark2 < nMark ) { delete[] buf; return FALSE; } // End of mark at closing bracket or end of string nMark2 > -1 ? nMark2 = nMark2 : nMark2 = sTemp.GetLength() - 1; sEmail = sTemp.Mid( nMark + 1, nMark2 - (nMark + 1) ); } else { sEmail = sTemp; sFriendly = ""; } AddRecipient( sEmail, sFriendly ); start = pos + 1; } } delete[] buf; return TRUE; } BOOL CMailMessage::EncodeHeader() { CString sTo; CString sDate; if( GetNumRecipients() <= 0 ) return FALSE; m_sHeader = ""; // Clear it // Get the recipients into a single string sTo = ""; CString sEmail = ""; CString sFriendly = ""; for( int i = 0; i < GetNumRecipients(); i++ ) { GetRecipient( sEmail, sFriendly, i ); sTo += ( i > 0 ? "," : "" ); sTo += sFriendly; sTo += "<"; sTo += sEmail; sTo += ">"; } m_tDateTime = m_tDateTime.GetCurrentTime(); // Format: Mon, 01 Jun 98 01:10:30 GMT sDate = m_tDateTime.Format( "%a, %d %b %y %H:%M:%S %Z" ); m_sHeader.Format( "Date: %s\r\n"\ "From: %s\r\n"\ "To: %s\r\n"\ "Subject: %s\r\n", // Include other extension lines if desired (LPCTSTR)sDate, (LPCTSTR)m_sFrom, (LPCTSTR)sTo, (LPCTSTR)m_sSubject); return TRUE; } BOOL CMailMessage::DecodeHeader() { int startpos, endpos; CString sSearchFor; //We can assume that there's a CR/LF before each of the tags, as the servers insert //Received: lines on top of the mail while transporting the mail sSearchFor="\r\nFrom: "; startpos=m_sHeader.Find(sSearchFor); if (startpos<0) return FALSE; endpos=m_sHeader.Mid(startpos+sSearchFor.GetLength()).Find("\r\n"); m_sFrom=m_sHeader.Mid(startpos+sSearchFor.GetLength(),endpos); sSearchFor="\r\nTo: "; startpos=m_sHeader.Find(sSearchFor); if (startpos<0) return FALSE; endpos=m_sHeader.Mid(startpos+sSearchFor.GetLength()).Find("\r\n"); AddMultipleRecipients(m_sHeader.Mid(startpos+sSearchFor.GetLength(),endpos)); sSearchFor="\r\nDate: "; startpos=m_sHeader.Find(sSearchFor); if (startpos<0) return FALSE; endpos = m_sHeader.Mid(startpos+sSearchFor.GetLength()).Find("\r\n"); //DATE=m_sHeader.Mid(startpos+sSearchFor.GetLength(),endpos)); //This is incorrect ! We have to parse the Date: line !!! //Anyone likes to write a parser for the different formats a date string may have ? m_tDateTime = m_tDateTime.GetCurrentTime(); sSearchFor="\r\nSubject: "; startpos=m_sHeader.Find(sSearchFor); if (startpos<0) return FALSE; endpos=m_sHeader.Mid(startpos+sSearchFor.GetLength()).Find("\r\n"); m_sSubject=m_sHeader.Mid(startpos+sSearchFor.GetLength(),endpos); //ATTENTION: Cc parsing won't work, if Cc is split up in multiple lines // Cc: recipient1 <rec1@ab.cd>, // recipient2 <rec2@ab.cd>, // recipient3 <rec3@ab.cd> // won't work !!! sSearchFor="\r\nCc: "; startpos=m_sHeader.Find(sSearchFor); if (startpos>=0) //no error if there's no Cc { endpos=m_sHeader.Mid(startpos+sSearchFor.GetLength()).Find("\r\n"); AddMultipleRecipients(m_sHeader.Mid(startpos+sSearchFor.GetLength(),endpos)); } return TRUE; } void CMailMessage::EncodeBody() { CString sCooked = ""; LPTSTR szBad = "\r\n.\r\n"; LPTSTR szGood = "\r\n..\r\n"; int nPos; int nBadLength = strlen( szBad ); if( m_sBody.Left( 3 ) == ".\r\n" ) m_sBody = "." + m_sBody; // // This is a little inefficient because it beings a search // at the beginning of the string each time. This was // the only thing I could think of that handled ALL variations. // In particular, the sequence "\r\n.\r\n.\r\n" is troublesome. // (Even CStringEx's FindReplace wouldn't handle that situation // with the global flag set.) // while( (nPos = m_sBody.Find( szBad )) > -1 ) { sCooked = m_sBody.Mid( 0, nPos ); sCooked += szGood; m_sBody = sCooked + m_sBody.Right( m_sBody.GetLength() - (nPos + nBadLength) ); } } void CMailMessage::DecodeBody() { CString sCooked = ""; LPTSTR szBad = "\r\n..\r\n"; LPTSTR szGood = "\r\n.\r\n"; int nPos; int nBadLength = strlen( szBad ); if( m_sBody.Left( 4 ) == "..\r\n" ) m_sBody = m_sBody.Mid(1); // // This is a little inefficient because it beings a search // at the beginning of the string each time. This was // the only thing I could think of that handled ALL variations. // In particular, the sequence "\r\n.\r\n.\r\n" is troublesome. // (Even CStringEx's FindReplace wouldn't handle that situation // with the global flag set.) // while( (nPos = m_sBody.Find( szBad )) > -1 ) { sCooked = m_sBody.Mid( 0, nPos ); sCooked += szGood; m_sBody = sCooked + m_sBody.Right( m_sBody.GetLength() - (nPos + nBadLength) ); } }