common.h

wdiag-0.10.gz ( Diagnostic source )

/* Westell 6100 multicast data collection utility.
 * Shared code for wstart and wstop.
 *
 * Copyright: Josh Carroll ([e-mail])
 * 10/13/2004
 *
 * common.h 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, version 2.
 * 
 * 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
 *
*/

/* common headers */
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/igmp.h>

/* struct definitions, etc */
#include "wtypes.h"

/* configuration file support */
#include "conf.h"

/* function prototypes */
/* function to send packets to the modem */
int send_packet(wpacket_t *pkt, char *bcast);
/* header checksum */
unsigned short chksum(unsigned short *hdr, int len);
/* subscribe or leave the multicast group */
void multicast_subscribe(char dest[], char group[]);
void multicast_leave(char dest[], char group[]);
void usage(char *prog);
/* print all the information received from the modem,
	in the future this function should provide the ability to
	print only specific fields via a configurationfile or
	options to the westell program */
void print_data(struct modemdata data, int decimal_print);
void print_info(const char *prefix, int32_t val, int divisor, int decimal_print);
/* grab the data from the modem struct */
int32_t getfield(const unsigned char *packet, const field_t *pkt_field);
/* listens for the multicast data, storing the data in the packet */
int listen_for_mcast(int model, unsigned char *packet, int packet_size, char *listen_addr);