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/*
*
* ===================================
* 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.
*
* @(#) $FreeBSD$
*
*/
/*
* User Space Library Functions
* ----------------------------
*
* IP address utilities
*
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <arpa/inet.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 <netdb.h>
#include <string.h>
#include "libatm.h"
#ifndef lint
__RCSID("@(#) $FreeBSD$");
#endif
/*
* Get IP address
*
* Return an IP address in a socket address structure, given a character
* string with a domain name or a dotted decimal number.
*
* Arguments:
* p pointer to a host name or IP address
*
* Returns:
* null error was encountered
* struct sockaddr_in * a pointer to a socket address with the
* requested IP address
*
*/
struct sockaddr_in *
get_ip_addr(p)
char *p;
{
struct hostent *ip_host;
static struct sockaddr_in sin;
/*
* Get IP address of specified host name
*/
UM_ZERO(&sin, sizeof(sin));
sin.sin_family = AF_INET;
if (p[0] >= '0' && p[0] <= '9') {
/*
* IP address is in dotted decimal format
*/
if ((sin.sin_addr.s_addr = inet_addr(p)) == -1) {
return((struct sockaddr_in *)0);
}
} else {
/*
* Host name is in domain name system format
*/
ip_host = gethostbyname(p);
if (!ip_host ||
ip_host->h_addrtype != AF_INET) {
return((struct sockaddr_in *)0);
}
sin.sin_addr.s_addr = *(u_long *)ip_host->h_addr_list[0];
}
return(&sin);
}
/*
* Format an IP address
*
* Return a text-formatted string with an IP address and domain name
* given a sockaddr_in with an IP address.
*
* Arguments:
* p pointer to sockaddr_in with an IP address
*
* Returns:
* char * pointer to a text-formatted string
*
*/
char *
format_ip_addr(addr)
struct in_addr *addr;
{
static char host_name[128];
char *ip_num;
struct hostent *ip_host;
/*
* Initialize
*/
UM_ZERO(host_name, sizeof(host_name));
/*
* Check for a zero address
*/
if (!addr || addr->s_addr == 0) {
return("-");
}
/*
* Get address in dotted decimal format
*/
ip_num = inet_ntoa(*addr);
/*
* Look up name in DNS
*/
ip_host = gethostbyaddr((char *)addr, sizeof(addr), AF_INET);
if (ip_host && ip_host->h_name &&
strlen(ip_host->h_name)) {
/*
* Return host name followed by dotted decimal address
*/
strcpy(host_name, ip_host->h_name);
strcat(host_name, " (");
strcat(host_name, ip_num);
strcat(host_name, ")");
return(host_name);
} else {
/*
* No host name -- just return dotted decimal address
*/
return(ip_num);
}
}
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