FreeBSD-5.3/sbin/atm/atm/atm_inet.c

/*
 *
 * ===================================
 * HARP  |  Host ATM Research Platform
 * ===================================
 *
 *
 * This Host ATM Research Platform ("HARP") file (the "Software") is
 * made available by Network Computing Services, Inc. ("NetworkCS")
 * "AS IS".  NetworkCS does not provide maintenance, improvements or
 * support of any kind.
 *
 * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
 * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
 * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
 * In no event shall NetworkCS be responsible for any damages, including
 * but not limited to consequential damages, arising from or relating to
 * any use of the Software or related support.
 *
 * Copyright 1994-1998 Network Computing Services, Inc.
 *
 * Copies of this Software may be made, however, the above copyright
 * notice must be reproduced on all copies.
 */

/*
 * User configuration and display program
 * --------------------------------------
 *
 * IP support
 *
 */

#include <sys/param.h>  
#include <sys/socket.h> 
#include <net/if.h>
#include <netinet/in.h>
#include <netatm/port.h>
#include <netatm/atm.h>
#include <netatm/atm_if.h> 
#include <netatm/atm_sap.h>
#include <netatm/atm_sys.h>
#include <netatm/atm_ioctl.h>

#include <errno.h>
#include <libatm.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <err.h>

#include "atm.h"

#ifndef lint
__RCSID("@(#) $FreeBSD: src/sbin/atm/atm/atm_inet.c,v 1.8 2004/02/10 20:48:08 cperciva Exp $");
#endif


/*
 * Process add command for a TCP/IP PVC
 * 
 * Command format: 
 *	atm add pvc <intf> <vpi> <vci> <aal> <encaps> IP <netif>
 *		<IP addr> | dynamic
 *
 * Arguments:
 *	argc	number of remaining arguments to command
 *	argv	pointer to remaining argument strings
 *	cmdp	pointer to command description 
 *	app	pointer to AIOCAPVC structure
 *	intp	pointer to air_int_rsp structure with information
 *		about the physical interface that is the PVC is for.
 *
 * Returns:
 *	none
 *
 */
void
ip_pvcadd(int argc, char **argv, const struct cmd *cmdp,
    struct atmaddreq *app, struct air_int_rsp *intp)
{
	char	*cp;
	char	nhelp[128];
	u_int	netif_no;
	u_int	i, netif_pref_len;

	/*
	 * Yet more validation
	 */
	if (argc < 2) {
		strcpy(nhelp, cmdp->help);
		cp = strstr(nhelp, "<netif>");
		if (cp)
			strcpy(cp, "ip {dyn|<dst>}");
		fprintf(stderr, "%s: Invalid number of arguments:\n",
				prog);
		fprintf(stderr, "\tformat is: %s%s %s\n",
				prefix, cmdp->name, nhelp);
		exit(1);
	}

	/*
	 * Validate and set network interface
	 */
	bzero(app->aar_pvc_intf, sizeof(app->aar_pvc_intf));
	netif_pref_len = strlen(intp->anp_nif_pref);
	cp = &argv[0][netif_pref_len];
	netif_no = (u_int)strtoul(cp, NULL, 10);
	for (i = 0; i < strlen(cp); i++) {
		if (cp[i] < '0' || cp[i] > '9') {
			netif_no = -1;
			break;
		}
	}
	if (strlen(argv[0]) > sizeof(app->aar_pvc_intf) - 1)
		errx(1, "Illegal network interface name '%s'", argv[0]);

	if (strncasecmp(intp->anp_nif_pref, argv[0], netif_pref_len) ||
	    strlen(argv[0]) <= netif_pref_len || netif_no >= intp->anp_nif_cnt)
		errx(1, "network interface %s is not associated with "
		    "interface %s", argv[0], intp->anp_intf);

	strcpy(app->aar_pvc_intf, argv[0]);
	argc--;
	argv++;

	/*
	 * Set PVC destination address
	 */
	bzero(&app->aar_pvc_dst, sizeof(struct sockaddr));
	if (strcasecmp(argv[0], "dynamic") == 0 ||
			strcasecmp(argv[0], "dyn") == 0) {

		/*
		 * Destination is dynamically determined
		 */
		app->aar_pvc_flags |= PVC_DYN;
	} else {

		/*
		 * Get destination IP address
		 */
		struct sockaddr_in *sain, *ret;

		sain = (struct sockaddr_in *)(void *)&app->aar_pvc_dst;
		ret = get_ip_addr(argv[0]);
		if (ret == NULL)
			errx(1, "%s: bad ip address '%s'", argv[-1], argv[0]);
		sain->sin_addr.s_addr = ret->sin_addr.s_addr;
	}
	argc--; argv++;
}