169 lines
3.7 KiB
C
169 lines
3.7 KiB
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.
|
|
*
|
|
* @(#) $Id: ip_addr.c,v 1.1 1998/09/15 08:22:34 phk Exp $
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* 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("@(#) $Id: ip_addr.c,v 1.1 1998/09/15 08:22:34 phk Exp $");
|
|
#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);
|
|
}
|
|
}
|