mailsrvr.c

		if((newmsg.from_net.type==NET_QWK || newmsg.from_net.type==NET_INTERNET)
			&& newmsg.reverse_path!=NULL) {
			smb_hfield(&newmsg, RECIPIENTNETTYPE, sizeof(newmsg.from_net.type), &newmsg.from_net.type);
			smb_hfield_str(&newmsg, RECIPIENTNETADDR, newmsg.reverse_path);
		}
	} else {
		smb_hfield(&newmsg, RECIPIENTAGENT, sizeof(msg->from_agent), &msg->from_agent);
	}
	newmsg.hdr.attr|=MSG_NOREPLY;
	strcpy(str,"Mail Delivery Subsystem");
	smb_hfield_str(&newmsg, SENDER, str);
	smb_hfield(&newmsg, SENDERAGENT, sizeof(agent), &agent);
	
	/* Put error message in subject for now */
	if(msg->hdr.delivery_attempts>1)
		SAFEPRINTF(attempts,"after %u attempts", msg->hdr.delivery_attempts);
	else
		attempts[0]=0;
	SAFEPRINTF2(str,"%s reporting delivery failure of message %s"
		,startup->host_name, attempts);
	smb_hfield_str(&newmsg, SMB_COMMENT, str);
	SAFEPRINTF2(str,"from %s to %s\r\n"
		,msg->reverse_path==NULL ? msg->from : msg->reverse_path
		,(char*)msg->to_net.addr);
	smb_hfield_str(&newmsg, SMB_COMMENT, str);
	strcpy(str,"Reason:");
	smb_hfield_str(&newmsg, SMB_COMMENT, str);
	smb_hfield_str(&newmsg, SMB_COMMENT, err);
	smb_hfield_str(&newmsg, SMB_COMMENT, "\r\nOriginal message text follows:\r\n");

	if((i=smb_addmsghdr(smb,&newmsg,SMB_SELFPACK))!=SMB_SUCCESS)
		lprintf(LOG_ERR,"0000 !BOUNCE ERROR %d (%s) adding message header"
			,i,smb->last_error);
	else {
		lprintf(LOG_WARNING,"0000 !Delivery failure notification (message #%ld) created for %s"
			,newmsg.hdr.number, newmsg.from);
		if((i=smb_incmsg_dfields(smb,&newmsg,1))!=SMB_SUCCESS)
			lprintf(LOG_ERR,"0000 !BOUNCE ERROR %d (%s) incrementing data allocation units"
				,i,smb->last_error);
	}

	newmsg.dfield=NULL;				/* Don't double-free the data fields */
	newmsg.hdr.total_dfields=0;
	smb_freemsgmem(&newmsg);

	return(TRUE);
}

static int remove_msg_intransit(smb_t* smb, smbmsg_t* msg)
{
	int i;

	if((i=smb_lockmsghdr(smb,msg))!=SMB_SUCCESS) {
		lprintf(LOG_WARNING,"0000 !SEND ERROR %d (%s) locking message header #%lu"
			,i, smb->last_error, msg->idx.number);
		return(i);
	}
	msg->hdr.netattr&=~MSG_INTRANSIT;
	i=smb_putmsghdr(smb,msg);
	smb_unlockmsghdr(smb,msg);
	
	if(i!=0)
		lprintf(LOG_ERR,"0000 !SEND ERROR %d (%s) writing message header #%lu"
			,i, smb->last_error, msg->idx.number);

	return(i);
}

void get_dns_server(char* dns_server, size_t len)
{
	str_list_t	list;
	size_t		count;

	sprintf(dns_server,"%.*s",len,startup->dns_server);
	if(!isalnum(dns_server[0])) {
		if((list=getNameServerList())!=NULL) {
			if((count=strListCount(list))>0) {
				sprintf(dns_server,"%.*s",len,list[xp_random(count)]);
				lprintf(LOG_DEBUG,"0000 SEND using auto-detected DNS server address: %s"
					,dns_server);
			}
			freeNameServerList(list);
		}
	}
}

#ifdef __BORLANDC__
#pragma argsused
#endif
static void sendmail_thread(void* arg)
{
	int			i,j;
	char		to[128];
	char		mx[128];
	char		mx2[128];
	char		err[1024];
	char		buf[512];
	char		str[128];
	char		resp[512];
	char		toaddr[256];
	char		fromaddr[256];
	char		challenge[256];
	char		secret[64];
	char		md5_data[384];
	char		digest[MD5_DIGEST_SIZE];
	char		numeric_ip[16];
	char		domain_list[MAX_PATH+1];
	char		dns_server[16];
	char*		server;
	char*		msgtxt=NULL;
	char*		p;
	char*		tp;
	ushort		port;
	ulong		last_msg=0;
	ulong		ip_addr;
	ulong		dns;
	ulong		lines;
	BOOL		success;
	BOOL		first_cycle=TRUE;
	SOCKET		sock=INVALID_SOCKET;
	SOCKADDR_IN	addr;
	SOCKADDR_IN	server_addr;
	time_t		last_scan=0;
	smb_t		smb;
	smbmsg_t	msg;
	mail_t*		mail;
	int32_t		msgs;
	long		l;
	size_t		len;
	BOOL		sending_locally=FALSE;

	SetThreadName("SendMail");
	thread_up(TRUE /* setuid */);

	sendmail_running=TRUE;
	terminate_sendmail=FALSE;

	lprintf(LOG_INFO,"0000 SendMail thread started");

	memset(&msg,0,sizeof(msg));
	memset(&smb,0,sizeof(smb));

	while(server_socket!=INVALID_SOCKET && !terminate_sendmail) {

		if(startup->options&MAIL_OPT_NO_SENDMAIL) {
			sem_trywait_block(&sendmail_wakeup_sem,1000);
			continue;
		}

		if(active_sendmail!=0)
			active_sendmail=0, update_clients();

		smb_close(&smb);

		if(sock!=INVALID_SOCKET) {
			mail_close_socket(sock);
			sock=INVALID_SOCKET;
		}

		if(msgtxt!=NULL) {
			smb_freemsgtxt(msgtxt);
			msgtxt=NULL;
		}

		smb_freemsgmem(&msg);

		/* Don't delay on first loop */
		if(first_cycle)
			first_cycle=FALSE;
		else
			sem_trywait_block(&sendmail_wakeup_sem,startup->sem_chk_freq*1000);

		SAFEPRINTF(smb.file,"%smail",scfg.data_dir);
		smb.retry_time=scfg.smb_retry_time;
		smb.subnum=INVALID_SUB;
		if((i=smb_open(&smb))!=SMB_SUCCESS) 
			continue;
		if((i=smb_locksmbhdr(&smb))!=SMB_SUCCESS)
			continue;
		i=smb_getstatus(&smb);
		smb_unlocksmbhdr(&smb);
		if(i!=0)
			continue;
		if(smb.status.last_msg==last_msg && time(NULL)-last_scan<startup->rescan_frequency)
			continue;
		last_msg=smb.status.last_msg;
		last_scan=time(NULL);
		mail=loadmail(&smb,&msgs,/* to network */0,MAIL_YOUR,0);
		for(l=0; l<msgs; l++) {
			if(active_sendmail!=0)
				active_sendmail=0, update_clients();

			if(server_socket==INVALID_SOCKET || terminate_sendmail)	/* server stopped */
				break;

			if(sock!=INVALID_SOCKET) {
				mail_close_socket(sock);
				sock=INVALID_SOCKET;
			}

			if(msgtxt!=NULL) {
				smb_freemsgtxt(msgtxt);
				msgtxt=NULL;
			}

			smb_freemsgmem(&msg);

			msg.hdr.number=mail[l].number;
			if((i=smb_getmsgidx(&smb,&msg))!=SMB_SUCCESS) {
				lprintf(LOG_ERR,"0000 !SEND ERROR %d (%s) getting message index #%lu"
					,i, smb.last_error, mail[l].number);
				break;
			}
			if((i=smb_lockmsghdr(&smb,&msg))!=SMB_SUCCESS) {
				lprintf(LOG_WARNING,"0000 !SEND ERROR %d (%s) locking message header #%lu"
					,i, smb.last_error, msg.idx.number);
				continue;
			}
			if((i=smb_getmsghdr(&smb,&msg))!=SMB_SUCCESS) {
				smb_unlockmsghdr(&smb,&msg);
				lprintf(LOG_ERR,"0000 !SEND ERROR %d (%s) reading message header #%lu"
					,i, smb.last_error, msg.idx.number);
				continue; 
			}
			if(msg.hdr.attr&MSG_DELETE || msg.to_net.type!=NET_INTERNET || msg.to_net.addr==NULL) {
				smb_unlockmsghdr(&smb,&msg);
				continue;
			}

			if(!(startup->options&MAIL_OPT_SEND_INTRANSIT) && msg.hdr.netattr&MSG_INTRANSIT) {
				smb_unlockmsghdr(&smb,&msg);
				lprintf(LOG_NOTICE,"0000 SEND Message #%lu from %s to %s - in transit"
					,msg.hdr.number, msg.from, msg.to_net.addr);
				continue;
			}
			msg.hdr.netattr|=MSG_INTRANSIT;	/* Prevent another sendmail thread from sending this msg */
			smb_putmsghdr(&smb,&msg);
			smb_unlockmsghdr(&smb,&msg);

			active_sendmail=1, update_clients();

			lprintf(LOG_INFO,"0000 SEND Message #%lu from %s to %s"
				,msg.hdr.number, msg.from, msg.to_net.addr);
			status("Sending");
#ifdef _WIN32
			if(startup->outbound_sound[0] && !(startup->options&MAIL_OPT_MUTE)) 
				PlaySound(startup->outbound_sound, NULL, SND_ASYNC|SND_FILENAME);
#endif

			lprintf(LOG_DEBUG,"0000 SEND getting message text");
			if((msgtxt=smb_getmsgtxt(&smb,&msg,GETMSGTXT_ALL))==NULL) {
				remove_msg_intransit(&smb,&msg);
				lprintf(LOG_ERR,"0000 !SEND ERROR (%s) retrieving message text",smb.last_error);
				continue;
			}

			remove_ctrl_a(msgtxt, msgtxt);

			port=0;
			mx2[0]=0;

			/* Check if this is a local email ToDo */
			SAFECOPY(to,(char*)msg.to_net.addr);
			truncstr(to,"> ");

			p=strrchr(to,'@');
			if(p==NULL) {
				remove_msg_intransit(&smb,&msg);
				lprintf(LOG_WARNING,"0000 !SEND INVALID destination address: %s", to);
				SAFEPRINTF(err,"Invalid destination address: %s", to);
				bounce(&smb,&msg,err, /* immediate: */TRUE);
				continue;
			}
			p++;
			SAFEPRINTF(domain_list,"%sdomains.cfg",scfg.ctrl_dir);
			if(stricmp(p,scfg.sys_inetaddr)==0
					|| stricmp(p,startup->host_name)==0
					|| findstr(p,domain_list)) {
				/* This is a local message... no need to send to remote */
				port = startup->smtp_port;
				if(startup->interface_addr==0)
					server="127.0.0.1";
				else {
					SAFEPRINTF4(numeric_ip, "%u.%u.%u.%u"
							, startup->interface_addr >> 24
							, (startup->interface_addr >> 16) & 0xff
							, (startup->interface_addr >> 8) & 0xff
							, startup->interface_addr & 0xff);
					server = numeric_ip;
				}
				sending_locally=TRUE;
			}
			else {
				if(startup->options&MAIL_OPT_RELAY_TX) { 
					server=startup->relay_server;
					port=startup->relay_port;
				} else {
					server=p;
					tp=strrchr(p,':');	/* non-standard SMTP port */
					if(tp!=NULL) {
						*tp=0;
						port=atoi(tp+1);
					}
					if(port==0) {	/* No port specified, use MX look-up */
						get_dns_server(dns_server,sizeof(dns_server));
						if((dns=resolve_ip(dns_server))==INADDR_NONE) {
							remove_msg_intransit(&smb,&msg);
							lprintf(LOG_WARNING,"0000 !SEND INVALID DNS server address: %s"
								,dns_server);
							continue;
						}
						lprintf(LOG_DEBUG,"0000 SEND getting MX records for %s from %s",p,dns_server);
						if((i=dns_getmx(p, mx, mx2, INADDR_ANY, dns
							,startup->options&MAIL_OPT_USE_TCP_DNS ? TRUE : FALSE
							,TIMEOUT_THREAD_WAIT/2))!=0) {
							remove_msg_intransit(&smb,&msg);
							lprintf(LOG_WARNING,"0000 !SEND ERROR %d obtaining MX records for %s from %s"
								,i,p,dns_server);
							SAFEPRINTF2(err,"Error %d obtaining MX record for %s",i,p);
							bounce(&smb,&msg,err, /* immediate: */FALSE);
							continue;
						}
						server=mx;
					}
				}
			}
			if(!port)
				port=IPPORT_SMTP;

			if((sock=mail_open_socket(SOCK_STREAM,"smtp|sendmail"))==INVALID_SOCKET) {
				remove_msg_intransit(&smb,&msg);
				lprintf(LOG_ERR,"0000 !SEND ERROR %d opening socket", ERROR_VALUE);
				continue;
			}

			memset(&addr,0,sizeof(addr));
			addr.sin_addr.s_addr = htonl(startup->interface_addr);
			addr.sin_family = AF_INET;

			/* Not needed.  Port is zero
			if(startup->seteuid!=NULL)
				startup->seteuid(FALSE); */
			i=bind(sock,(struct sockaddr *)&addr, sizeof(addr));
			/* Not needed.  Port is zero
			if(startup->seteuid!=NULL)
				startup->seteuid(TRUE); */
			if(i!=0) {
				remove_msg_intransit(&smb,&msg);
				lprintf(LOG_ERR,"%04d !SEND ERROR %d (%d) binding socket", sock, i, ERROR_VALUE);
				continue;
			}

			strcpy(err,"UNKNOWN ERROR");
			success=FALSE;
			for(j=0;j<2 && !success;j++) {
				if(j) {
					if(startup->options&MAIL_OPT_RELAY_TX || !mx2[0])
						break;
					lprintf(LOG_DEBUG,"%04d SEND reverting to second MX: %s", sock, mx2);
					server=mx2;	/* Give second mx record a try */
				}
				
				lprintf(LOG_DEBUG,"%04d SEND resolving SMTP hostname: %s", sock, server);
				ip_addr=resolve_ip(server);
				if(ip_addr==INADDR_NONE) {
					SAFEPRINTF(err,"Failed to resolve SMTP hostname: %s",server);
					lprintf(LOG_WARNING,"%04d !SEND failure resolving hostname: %s", sock, server);
					continue;
				}

				memset(&server_addr,0,sizeof(server_addr));
				server_addr.sin_addr.s_addr = ip_addr;
				server_addr.sin_family = AF_INET;
				server_addr.sin_port = htons(port);

				if((server==mx || server==mx2) 
					&& ((ip_addr&0xff)==127 || ip_addr==0)) {
					SAFEPRINTF2(err,"Bad IP address (%s) for MX server: %s"
						,inet_ntoa(server_addr.sin_addr),server);
					continue;
				}
				
				lprintf(LOG_INFO,"%04d SEND connecting to port %u on %s [%s]"
					,sock
					,ntohs(server_addr.sin_port)
					,server,inet_ntoa(server_addr.sin_addr));
				if((i=connect(sock, (struct sockaddr *)&server_addr, sizeof(server_addr)))!=0) {
					i=ERROR_VALUE;
					lprintf(LOG_WARNING,"%04d !SEND ERROR %d connecting to SMTP server: %s"
						,sock
						,i, server);
					SAFEPRINTF2(err,"Error %d connecting to SMTP server: %s"
						,i, server);
					continue;
				}
				success=TRUE;
			}
			if(!success) {	/* Failed to send, so bounce */
				remove_msg_intransit(&smb,&msg);
				bounce(&smb,&msg,err,/* immediate: */FALSE);	
				continue;
			}

			lprintf(LOG_DEBUG,"%04d SEND connected to %s",sock,server);

			/* HELO */
			if(!sockgetrsp(sock,"220",buf,sizeof(buf))) {
				remove_msg_intransit(&smb,&msg);
				SAFEPRINTF3(err,badrsp_err,server,buf,"220");
				bounce(&smb,&msg,err,/* immediate: */buf[0]=='5');
				continue;
			}
			if(startup->options&MAIL_OPT_RELAY_TX 
				&& (startup->options&MAIL_OPT_RELAY_AUTH_MASK)!=0)	/* Requires ESMTP */
				sockprintf(sock,"EHLO %s",startup->host_name);
			else
				sockprintf(sock,"HELO %s",startup->host_name);
			if(!sockgetrsp(sock,"250", buf, sizeof(buf))) {
				remove_msg_intransit(&smb,&msg);
				SAFEPRINTF3(err,badrsp_err,server,buf,"250");
				bounce(&smb,&msg,err,/* immediate: */buf[0]=='5');
				continue;
			}

			/* AUTH */
			if(startup->options&MAIL_OPT_RELAY_TX 
				&& (startup->options&MAIL_OPT_RELAY_AUTH_MASK)!=0 && !sending_locally) {

				if((startup->options&MAIL_OPT_RELAY_AUTH_MASK)==MAIL_OPT_RELAY_AUTH_PLAIN) {
					/* Build the buffer: <username>\0<user-id>\0<password */
					len=safe_snprintf(buf,sizeof(buf),"%s%c%s%c%s"
						,startup->relay_user
						,0
						,startup->relay_user
						,0
						,startup->relay_pass);
					b64_encode(resp,sizeof(resp),buf,len);
					sockprintf(sock,"AUTH PLAIN %s",resp);
				} else {
					switch(startup->options&MAIL_OPT_RELAY_AUTH_MASK) {
						case MAIL_OPT_RELAY_AUTH_LOGIN:
							p="LOGIN";
							break;
						case MAIL_OPT_RELAY_AUTH_CRAM_MD5:
							p="CRAM-MD5";
							break;
						default:
							p="<unknown>";
							break;
					}
					sockprintf(sock,"AUTH %s",p);
					if(!sockgetrsp(sock,"334",buf,sizeof(buf))) {
						SAFEPRINTF3(err,badrsp_err,server,buf,"334 Username/Challenge");
						bounce(&smb,&msg,err,/* immediate: */buf[0]=='5');
						continue;
					}
					switch(startup->options&MAIL_OPT_RELAY_AUTH_MASK) {
						case MAIL_OPT_RELAY_AUTH_LOGIN:
							b64_encode(p=resp,sizeof(resp),startup->relay_user,0);
							break;
						case MAIL_OPT_RELAY_AUTH_CRAM_MD5:
							p=buf;
							FIND_WHITESPACE(p);
							SKIP_WHITESPACE(p);
							b64_decode(challenge,sizeof(challenge),p,0);

							/* Calculate response */
							memset(secret,0,sizeof(secret));
							SAFECOPY(secret,startup->relay_pass);
							for(i=0;i<sizeof(secret);i++)
								md5_data[i]=secret[i]^0x36;	/* ipad */
							strcpy(md5_data+i,challenge);
							MD5_calc(digest,md5_data,sizeof(secret)+strlen(challenge));
							for(i=0;i<sizeof(secret);i++)
								md5_data[i]=secret[i]^0x5c;	/* opad */
							memcpy(md5_data+i,digest,sizeof(digest));
							MD5_calc(digest,md5_data,sizeof(secret)+sizeof(digest));
							
							safe_snprintf(buf,sizeof(buf),"%s %s",startup->relay_user,MD5_hex(str,digest));
							b64_encode(p=resp,sizeof(resp),buf,0);
							break;
						default:
							p="<unknown>";
							break;
					}
					sockprintf(sock,"%s",p);
					if((startup->options&MAIL_OPT_RELAY_AUTH_MASK)!=MAIL_OPT_RELAY_AUTH_CRAM_MD5) {
						if(!sockgetrsp(sock,"334",buf,sizeof(buf))) {
							SAFEPRINTF3(err,badrsp_err,server,buf,"334 Password");
							bounce(&smb,&msg,err,/* immediate: */buf[0]=='5');
							continue;
						}
						switch(startup->options&MAIL_OPT_RELAY_AUTH_MASK) {
							case MAIL_OPT_RELAY_AUTH_LOGIN:
								b64_encode(p=buf,sizeof(buf),startup->relay_pass,0);
								break;
							default:
								p="<unknown>";
								break;
						}
						sockprintf(sock,"%s",p);
					}
				}
				if(!sockgetrsp(sock,"235",buf,sizeof(buf))) {
					SAFEPRINTF3(err,badrsp_err,server,buf,"235");
					bounce(&smb,&msg,err,/* immediate: */buf[0]=='5');
					continue;
				}
			}

			/* MAIL */
			if(msg.from_net.type==NET_INTERNET && msg.reverse_path!=NULL)
				SAFECOPY(fromaddr,msg.reverse_path);
			else 
				usermailaddr(&scfg,fromaddr,msg.from);
			truncstr(fromaddr," ");
			if(fromaddr[0]=='<')
				sockprintf(sock,"MAIL FROM: %s",fromaddr);
			else
				sockprintf(sock,"MAIL FROM: <%s>",fromaddr);
			if(!sockgetrsp(sock,"250", buf, sizeof(buf))) {
				remove_msg_intransit(&smb,&msg);
				SAFEPRINTF3(err,badrsp_err,server,buf,"250");
				bounce(&smb,&msg,err,/* immediate: */buf[0]=='5');
				continue;
			}
			/* RCPT */
			if(msg.forward_path!=NULL) {
				SAFECOPY(toaddr,msg.forward_path);
			} else {
				if((p=strrchr((char*)msg.to_net.addr,'<'))!=NULL)
					p++;
				else
					p=(char*)msg.to_net.addr;
				SAFECOPY(toaddr,p);
				truncstr(toaddr,"> ");
				if((p=strrchr(toaddr,'@'))!=NULL && (tp=strrchr(toaddr,':'))!=NULL
					&& tp > p)
					*tp=0;	/* Remove ":port" designation from envelope */
			}
			sockprintf(sock,"RCPT TO: <%s>", toaddr);
			if(!sockgetrsp(sock,"25", buf, sizeof(buf))) {
				remove_msg_intransit(&smb,&msg);
				SAFEPRINTF3(err,badrsp_err,server,buf,"25*");
				bounce(&smb,&msg,err,/* immediate: */buf[0]=='5');
				continue;
			}
			/* DATA */
			sockprintf(sock,"DATA");
			if(!sockgetrsp(sock,"354", buf, sizeof(buf))) {
				remove_msg_intransit(&smb,&msg);
				SAFEPRINTF3(err,badrsp_err,server,buf,"354");
				bounce(&smb,&msg,err,/* immediate: */buf[0]=='5');
				continue;
			}
			lprintf(LOG_DEBUG,"%04d SEND sending message text (%u bytes)"
				,sock, strlen(msgtxt));
			lines=sockmsgtxt(sock,&msg,msgtxt,-1);
			if(!sockgetrsp(sock,"250", buf, sizeof(buf))) {
				remove_msg_intransit(&smb,&msg);
				SAFEPRINTF3(err,badrsp_err,server,buf,"250");
				bounce(&smb,&msg,err,/* immediate: */buf[0]=='5');
				continue;
			}
			lprintf(LOG_DEBUG,"%04d SEND message transfer complete (%lu lines)", sock, lines);

			/* Now lets mark this message for deletion without corrupting the index */
			msg.hdr.attr|=MSG_DELETE;
			msg.hdr.netattr&=~MSG_INTRANSIT;
			if((i=smb_updatemsg(&smb,&msg))!=SMB_SUCCESS)
				lprintf(LOG_ERR,"%04d !SEND ERROR %d (%s) deleting message #%lu"
					,sock, i, smb.last_error, msg.hdr.number);
			if(msg.hdr.auxattr&MSG_FILEATTACH)
				delfattach(&scfg,&msg);

			if(msg.from_agent==AGENT_PERSON && !(startup->options&MAIL_OPT_NO_AUTO_EXEMPT))
				exempt_email_addr("SEND Auto-exempting",msg.from,fromaddr,toaddr);

			/* QUIT */
			sockprintf(sock,"QUIT");
			sockgetrsp(sock,"221", buf, sizeof(buf));
			mail_close_socket(sock);
			sock=INVALID_SOCKET;
		}				
		status(STATUS_WFC);
		/* Free up resources here */
		if(mail!=NULL)
			freemail(mail);
	}
	if(sock!=INVALID_SOCKET)
		mail_close_socket(sock);

	smb_freemsgtxt(msgtxt);
	smb_freemsgmem(&msg);
	smb_close(&smb);

	if(active_sendmail!=0)
		active_sendmail=0, update_clients();

	thread_down();
	lprintf(LOG_DEBUG,"0000 SendMail thread terminated (%u threads remain)", thread_count);

	sendmail_running=FALSE;
}

void DLLCALL mail_terminate(void)
{
  	lprintf(LOG_INFO,"%04d Mail Server terminate",server_socket);
	terminate_server=TRUE;
}

static void cleanup(int code)
{
	int i;

	free_cfg(&scfg);

	semfile_list_free(&recycle_semfiles);
	semfile_list_free(&shutdown_semfiles);

	if(mailproc_list!=NULL) {
		for(i=0;i<mailproc_count;i++) {
			if(mailproc_list[i].ar!=NULL && mailproc_list[i].ar!=nular)
				free(mailproc_list[i].ar);
			strListFree(&mailproc_list[i].to);
			strListFree(&mailproc_list[i].from);
		}
		FREE_AND_NULL(mailproc_list);
	}

	if(server_socket!=INVALID_SOCKET) {
		mail_close_socket(server_socket);
		server_socket=INVALID_SOCKET;
	}

	if(submission_socket!=INVALID_SOCKET) {
		mail_close_socket(submission_socket);
		submission_socket=INVALID_SOCKET;
	}

	if(pop3_socket!=INVALID_SOCKET) {
		mail_close_socket(pop3_socket);
		pop3_socket=INVALID_SOCKET;
	}

	update_clients();

#ifdef _WINSOCKAPI_	
	if(WSAInitialized && WSACleanup()!=0) 
		lprintf(LOG_ERR,"0000 !WSACleanup ERROR %d",ERROR_VALUE);
#endif

	thread_down();
	status("Down");
	if(terminate_server || code) {
		char str[1024];
		sprintf(str,"%u connections served", stats.connections_served);
		if(stats.connections_refused)
			sprintf(str+strlen(str),", %u refused", stats.connections_refused);
		if(stats.connections_ignored)
			sprintf(str+strlen(str),", %u ignored", stats.connections_refused);
		if(stats.sessions_refused)
			sprintf(str+strlen(str),", %u sessions refused", stats.sessions_refused);
		sprintf(str+strlen(str),", %u messages received", stats.msgs_received);
		if(stats.msgs_refused)
			sprintf(str+strlen(str),", %u refused", stats.msgs_refused);
		if(stats.msgs_ignored)
			sprintf(str+strlen(str),", %u ignored", stats.msgs_ignored);
		if(stats.errors)
			sprintf(str+strlen(str),", %u errors", stats.errors);
		if(stats.crit_errors)
			sprintf(str+strlen(str),", %u critcal", stats.crit_errors);

		lprintf(LOG_INFO,"#### Mail Server thread terminated (%s)",str);
	}
	if(thread_count)
		lprintf(LOG_WARNING,"#### !Mail Server threads (%u) remain after termination", thread_count);
	if(startup!=NULL && startup->terminated!=NULL)
		startup->terminated(startup->cbdata,code);
}

const char* DLLCALL mail_ver(void)
{
	static char ver[256];
	char compiler[32];

	DESCRIBE_COMPILER(compiler);

	sscanf("$Revision$", "%*s %s", revision);

	sprintf(ver,"%s %s%s  SMBLIB %s  "
		"Compiled %s %s with %s"
		,server_name
		,revision
#ifdef _DEBUG
		," Debug"
#else
		,""
#endif
		,smb_lib_ver()
		,__DATE__, __TIME__, compiler
		);

	return(ver);
}

void DLLCALL mail_server(void* arg)
{
	char*			p;
	char			path[MAX_PATH+1];
	char			mailproc_ini[MAX_PATH+1];
	char			str[256];
	char			error[256];
	char			compiler[32];
	SOCKADDR_IN		server_addr;
	SOCKADDR_IN		client_addr;
	socklen_t		client_addr_len;
	SOCKET			client_socket;
	int				i;
	int				result;
	ulong			l;
	time_t			t;
	time_t			start;
	time_t			initialized=0;
	fd_set			socket_set;
	SOCKET			high_socket_set;
	pop3_t*			pop3;
	smtp_t*			smtp;
	struct timeval	tv;
	FILE*			fp;
	str_list_t		sec_list;

	mail_ver();

	startup=(mail_startup_t*)arg;

#ifdef _THREAD_SUID_BROKEN
	if(thread_suid_broken)
		startup->seteuid(TRUE);
#endif

    if(startup==NULL) {
    	sbbs_beep(100,500);
    	fprintf(stderr, "No startup structure passed!\n");
    	return;
    }

	if(startup->size!=sizeof(mail_startup_t)) {	/* verify size */
		sbbs_beep(100,500);
		sbbs_beep(300,500);
		sbbs_beep(100,500);
		fprintf(stderr, "Invalid startup structure!\n");
		return;
	}

	/* Setup intelligent defaults */
	if(startup->relay_port==0)				startup->relay_port=IPPORT_SMTP;
	if(startup->submission_port==0)			startup->submission_port=IPPORT_SUBMISSION;
	if(startup->smtp_port==0)				startup->smtp_port=IPPORT_SMTP;
	if(startup->pop3_port==0)				startup->pop3_port=IPPORT_POP3;
	if(startup->rescan_frequency==0)		startup->rescan_frequency=3600;	/* 60 minutes */
	if(startup->max_delivery_attempts==0)	startup->max_delivery_attempts=50;
	if(startup->max_inactivity==0) 			startup->max_inactivity=120; /* seconds */
	if(startup->max_recipients==0) 			startup->max_recipients=100;
	if(startup->sem_chk_freq==0)			startup->sem_chk_freq=2;

#ifdef JAVASCRIPT
	if(startup->js.max_bytes==0)			startup->js.max_bytes=JAVASCRIPT_MAX_BYTES;
	if(startup->js.cx_stack==0)				startup->js.cx_stack=JAVASCRIPT_CONTEXT_STACK;
#endif

	ZERO_VAR(js_server_props);
	SAFEPRINTF2(js_server_props.version,"%s %s",server_name,revision);
	js_server_props.version_detail=mail_ver();
	js_server_props.clients=&active_clients;
	js_server_props.options=&startup->options;
	js_server_props.interface_addr=&startup->interface_addr;

	uptime=0;
	memset(&stats,0,sizeof(stats));
	startup->recycle_now=FALSE;
	startup->shutdown_now=FALSE;
	terminate_server=FALSE;

	SetThreadName("Mail Server");

	do {

		thread_up(FALSE /* setuid */);

		status("Initializing");

		memset(&scfg, 0, sizeof(scfg));

		lprintf(LOG_INFO,"%s Revision %s%s"
			,server_name
			,revision
#ifdef _DEBUG
			," Debug"
#else
			,""
#endif
			);

		DESCRIBE_COMPILER(compiler);

		lprintf(LOG_INFO,"Compiled %s %s with %s", __DATE__, __TIME__, compiler);

		lprintf(LOG_DEBUG,"SMBLIB %s (format %x.%02x)",smb_lib_ver(),smb_ver()>>8,smb_ver()&0xff);

		sbbs_srand();

		if(!winsock_startup()) {
			cleanup(1);
			return;
		}

		t=time(NULL);
		lprintf(LOG_INFO,"Initializing on %.24s with options: %lx"
			,ctime_r(&t,str),startup->options);

		if(chdir(startup->ctrl_dir)!=0)
			lprintf(LOG_ERR,"!ERROR %d changing directory to: %s", errno, startup->ctrl_dir);

		/* Initial configuration and load from CNF files */
		SAFECOPY(scfg.ctrl_dir,startup->ctrl_dir);
		lprintf(LOG_INFO,"Loading configuration files from %s", scfg.ctrl_dir);
		scfg.size=sizeof(scfg);
		SAFECOPY(error,UNKNOWN_LOAD_ERROR);
		if(!load_cfg(&scfg, NULL, TRUE, error)) {
			lprintf(LOG_CRIT,"!ERROR %s",error);
			lprintf(LOG_CRIT,"!Failed to load configuration files");
			cleanup(1);
			return;
		}

		if(startup->temp_dir[0])
			SAFECOPY(scfg.temp_dir,startup->temp_dir);
		else
			SAFECOPY(scfg.temp_dir,"../temp");
	   	prep_dir(scfg.ctrl_dir, scfg.temp_dir, sizeof(scfg.temp_dir));
		MKDIR(scfg.temp_dir);
		lprintf(LOG_DEBUG,"Temporary file directory: %s", scfg.temp_dir);
		if(!isdir(scfg.temp_dir)) {
			lprintf(LOG_CRIT,"!Invalid temp directory: %s", scfg.temp_dir);
			cleanup(1);
			return;
		}

		/* Parse the mailproc[.host].ini */
		mailproc_list=NULL;
		mailproc_count=0;
		iniFileName(mailproc_ini,sizeof(mailproc_ini),scfg.ctrl_dir,"mailproc.ini");
		if((fp=iniOpenFile(mailproc_ini, /* create? */FALSE))!=NULL) {
			lprintf(LOG_DEBUG,"Reading %s",mailproc_ini);
			sec_list = iniReadSectionList(fp,/* prefix */NULL);
			if((mailproc_count=strListCount(sec_list))!=0
				&& (mailproc_list=malloc(mailproc_count*sizeof(struct mailproc)))!=NULL) {
				char buf[INI_MAX_VALUE_LEN+1];
				for(i=0;i<mailproc_count;i++) {
					memset(&mailproc_list[i],0,sizeof(struct mailproc));
					SAFECOPY(mailproc_list[i].name,sec_list[i]);
					SAFECOPY(mailproc_list[i].cmdline,
						iniReadString(fp,sec_list[i],"Command",sec_list[i],buf));
					SAFECOPY(mailproc_list[i].eval,
						iniReadString(fp,sec_list[i],"Eval","",buf));
					mailproc_list[i].to =
						iniReadStringList(fp,sec_list[i],"To",",",NULL);
					mailproc_list[i].from =
						iniReadStringList(fp,sec_list[i],"From",",",NULL);
					mailproc_list[i].passthru =
						iniReadBool(fp,sec_list[i],"PassThru",TRUE);
					mailproc_list[i].native =
						iniReadBool(fp,sec_list[i],"Native",FALSE);
					mailproc_list[i].disabled = 
						iniReadBool(fp,sec_list[i],"Disabled",FALSE);
					mailproc_list[i].ignore_on_error = 
						iniReadBool(fp,sec_list[i],"IgnoreOnError",FALSE);
					mailproc_list[i].process_spam =
						iniReadBool(fp,sec_list[i],"ProcessSPAM",TRUE);
					mailproc_list[i].process_dnsbl =
						iniReadBool(fp,sec_list[i],"ProcessDNSBL",TRUE);
					mailproc_list[i].ar = 
						arstr(NULL,iniReadString(fp,sec_list[i],"AccessRequirements","",buf),&scfg);
				}
			}
			iniFreeStringList(sec_list);
			iniCloseFile(fp);
		}

		if(startup->host_name[0]==0)
			SAFECOPY(startup->host_name,scfg.sys_inetaddr);

		if((t=checktime())!=0) {   /* Check binary time */
			lprintf(LOG_ERR,"!TIME PROBLEM (%ld)",t);
		}

		if(uptime==0)
			uptime=time(NULL);	/* this must be done *after* setting the timezone */

		if(startup->max_clients==0) {
			startup->max_clients=scfg.sys_nodes;
			if(startup->max_clients<10)
				startup->max_clients=10;
		}

		lprintf(LOG_DEBUG,"Maximum clients: %u",startup->max_clients);

		lprintf(LOG_DEBUG,"Maximum inactivity: %u seconds",startup->max_inactivity);

		active_clients=0,update_clients();

		/* open a socket and wait for a client */

		server_socket = mail_open_socket(SOCK_STREAM,"smtp");

		if(server_socket == INVALID_SOCKET) {
			lprintf(LOG_CRIT,"!ERROR %d opening socket", ERROR_VALUE);
			cleanup(1);
			return;
		}

		lprintf(LOG_DEBUG,"%04d SMTP socket opened",server_socket);

		/*****************************/
		/* Listen for incoming calls */
		/*****************************/
		memset(&server_addr, 0, sizeof(server_addr));

		server_addr.sin_addr.s_addr = htonl(startup->interface_addr);
		server_addr.sin_family = AF_INET;
		server_addr.sin_port   = htons(startup->smtp_port);

		if(startup->smtp_port < IPPORT_RESERVED) {
			if(startup->seteuid!=NULL)
				startup->seteuid(FALSE);
		}
		result = retry_bind(server_socket,(struct sockaddr *)&server_addr,sizeof(server_addr)
			,startup->bind_retry_count,startup->bind_retry_delay,"SMTP Server",lprintf);
		if(startup->smtp_port < IPPORT_RESERVED) {
			if(startup->seteuid!=NULL)
				startup->seteuid(TRUE);
		}
		if(result != 0) {
			lprintf(LOG_CRIT,"%04d %s",server_socket, BIND_FAILURE_HELP);
			cleanup(1);
			return;
		}
		result = listen(server_socket, 1);

		if(result != 0) {
			lprintf(LOG_CRIT,"%04d !ERROR %d (%d) listening on SMTP socket"
				,server_socket, result, ERROR_VALUE);
			cleanup(1);
			return;
		}
		lprintf(LOG_INFO,"%04d SMTP Server listening on port %u"
			,server_socket, startup->smtp_port);

		if(startup->options&MAIL_OPT_USE_SUBMISSION_PORT) {

			submission_socket = mail_open_socket(SOCK_STREAM,"submission");

			if(submission_socket == INVALID_SOCKET) {
				lprintf(LOG_CRIT,"!ERROR %d opening socket", ERROR_VALUE);
				cleanup(1);
				return;
			}

			lprintf(LOG_DEBUG,"%04d SUBMISSION socket opened",submission_socket);

			/*****************************/
			/* Listen for incoming calls */
			/*****************************/
			memset(&server_addr, 0, sizeof(server_addr));

			server_addr.sin_addr.s_addr = htonl(startup->interface_addr);
			server_addr.sin_family = AF_INET;
			server_addr.sin_port   = htons(startup->submission_port);

			if(startup->submission_port < IPPORT_RESERVED) {
				if(startup->seteuid!=NULL)
					startup->seteuid(FALSE);
			}
			result = retry_bind(submission_socket,(struct sockaddr *)&server_addr,sizeof(server_addr)
				,startup->bind_retry_count,startup->bind_retry_delay,"SMTP Submission Agent",lprintf);
			if(startup->submission_port < IPPORT_RESERVED) {
				if(startup->seteuid!=NULL)
					startup->seteuid(TRUE);
			}
			if(result != 0) {
				lprintf(LOG_CRIT,"%04d %s",submission_socket, BIND_FAILURE_HELP);
				cleanup(1);
				return;
			}

			result = listen(submission_socket, 1);

			if(result != 0) {