/* -------------------------------------------------------------------- *//* SMS Client, send messages to mobile phones and pagers		*//*									*//* snppd.c								*//*									*//*  Copyright (C) 1997,1998 Angelo Masci				*//*									*//*  This library is free software; you can redistribute it and/or	*//*  modify it under the terms of the GNU Library General Public		*//*  License as published by the Free Software Foundation; either	*//*  version 2 of the License, or (at your option) any later version.	*//*									*//*  This library 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	*//*  Library General Public License for more details.			*//*									*//*  You should have received a copy of the GNU Library General Public	*//*  License along with this library; if not, write to the Free		*//*  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	*//*									*//*  You can contact the author at this e-mail address:			*//*									*//*  angelo@styx.demon.co.uk						*//*									*//* --------------------------------------------------------------------   $Id$   -------------------------------------------------------------------- */#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/types.h>#include <sys/socket.h>#if !defined(SOLARIS) && !defined(AIX) && !defined(UNIXWARE)#include <getopt.h>#endif#include "server.h"#include "logfile.h"#include "common.h"/* -------------------------------------------------------------------- */#if !defined(MSNPPDLOGFILE)#error "MSNPPDLOGFILE undefined"#else#define LOGFILE         MSNPPDLOGFILE#endif#if !defined(MSNPPDLOGLEVEL)#error "MSNPPDLOGLEVEL undefined" #else#define LOGLEVEL	MSNPPDLOGLEVEL#endif/* -------------------------------------------------------------------- */#define SNPP_PORT	444		/* Standard port number 	*/					/* assigned for snpp traffic	*//* -------------------------------------------------------------------- */#define ERROR_STATE	-2#define EXIT_STATE	-1#define LOGIN_STATE	0#define PAGE_STATE 	1#define MESSAGE_STATE	2#define SEND_STATE	3#define HELP_STATE	4/* -------------------------------------------------------------------- *//* -------------------------------------------------------------------- */void gateway(int new_fd){	char	buf[MAX_STRING_LEN],		host_name[512],		ip_address[512];	int 	state;	if (get_client_information(new_fd, host_name, ip_address) == 0)	{	lprintf(LOG_STANDARD, "Connection from %s [%s]\n", host_name, ip_address);	}	hprintf(new_fd, "220 SNPP Gateway Ready\n");	state = LOGIN_STATE;	while ((state != EXIT_STATE) &&	       (state != ERROR_STATE) &&	       (hgets(buf, MAX_STRING_LEN, new_fd) != NULL))	{		if (strncasecmp(buf, "PAGE", 4) == 0)		{			if (state == LOGIN_STATE)			{				hprintf(new_fd, "250 Pager ID Accepted\n");				state = PAGE_STATE;			}			else			{	state = ERROR_STATE;			}		}		else		if (strncasecmp(buf, "MESS", 4) == 0)		{			if (state == PAGE_STATE)			{				hprintf(new_fd, "250 Message OK\n");				state = MESSAGE_STATE;			}			else			{	state = ERROR_STATE;			}		}		else		if (strncasecmp(buf, "SEND", 4) == 0)		{				if (state == MESSAGE_STATE)			{				hprintf(new_fd, "250 Message Sent Successfully\n");				state = SEND_STATE;			}			else			{	state = ERROR_STATE;			}		}		else		if (strncasecmp(buf, "QUIT", 4) == 0)		{			hprintf(new_fd, "221 OK, Goodbye\n");			state = EXIT_STATE;		}		else		if (strncasecmp(buf, "RESE", 4) == 0)		{			hprintf(new_fd, "250 RESET OK\n");			state = LOGIN_STATE;		}		else		if (strncasecmp(buf, "HELP", 4) == 0)		{			hprintf(new_fd, "214 PAGE <Pager ID>\n");			hprintf(new_fd, "214 MESS <Alpha or Numeric Message>\n");			hprintf(new_fd, "214 SEND\n");			hprintf(new_fd, "214 QUIT\n");			hprintf(new_fd, "250 End of Help Information\n");			state = LOGIN_STATE;		}		else		{	state = ERROR_STATE;		}		if (state == ERROR_STATE)		{	hprintf(new_fd, "421 Error Connection Terminated\n");		}	}			}/* -------------------------------------------------------------------- *//* -------------------------------------------------------------------- */void usage(char *file){	lprintf(LOG_STANDARD, "Usage: %s [-l loglevel] [-p port]\n", file);}/* -------------------------------------------------------------------- *//* -------------------------------------------------------------------- */int main(int argc, char *argv[]){	int 	c,		port;	char	*ptr;struct 	sockaddr 		sa_client;	/* ---------------------------- */	set_logfile(LOGFILE);	set_loglevel(LOGLEVEL);	set_consolelog(TRUE);	/* ---------------------------- */	port = SNPP_PORT;	while ((c = getopt (argc, argv, "p:l:")) != -1)        {                switch (c)                {                        case 'p':  				port = (int)strtol(optarg, &ptr, 10);                                break;                        case 'l':  				set_loglevel((int)strtol(optarg, &ptr, 10));				if (ptr == optarg)				{					lprintf(LOG_ERROR, "Option l requires an argument\n");	     	                        usage(argv[0]);                	                exit(-1);				}                                                                break;                        case '?':                                lprintf(LOG_ERROR, "Unknown option `-%c'\n", optopt);                                usage(argv[0]);                                exit(-1);                        default:                                abort ();                }        }	if ((argc - optind) != 0)	{	usage(argv[0]);		exit(-1);	}	/* ---------------------------- */	c = sizeof(sa_client);	if (getpeername(fileno(stdin), &sa_client, &c) < 0)	{		/* getpeername() fails if fd isn't a 	*/		/* socket. If this is the case we can 	*/		/* assume that we aren't running	*/		/* from inetd and should startup and	*/		/* as and run as a daemon ourselves.	*/		lprintf(LOG_STANDARD, "Starting SNPPD Standalone Server deamon...\n");		if (server_main(port, gateway) != 0)		{	lprintf(LOG_STANDARD, "Failed to start SNPPD Standalone Server deamon\n");			exit(-1);		}	}	else	{	set_consolelog(FALSE);		lprintf(LOG_STANDARD, "Starting SNPPD Server as an INETD service\n");		gateway(fileno(stdin));	}	return 0;}