This is access_inet.c in view mode; [Download] [Up]
#ifndef lint
static char *sccsid = "@(#)access_inet.c 1.4 (Berkeley) 1/9/88";
#endif
#include "common.h"
#include <stdio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#ifndef EXCELAN
#include <netdb.h>
#ifndef hpux
#include <arpa/inet.h>
#endif
#endif
/*
* inet_netnames -- return the network, subnet, and host names of
* our peer process for the Internet domain.
*
* Parameters: "sock" is our socket, which we don't need.
* "sin" is a pointer to the result of
* a getpeername() call.
* "net_name", "subnet_name", and "host_name"
* are filled in by this routine with the
* corresponding ASCII names of our peer.
* Returns: Nothing.
* Side effects: None.
*/
inet_netnames(sock, sin, net_name, subnet_name, host_name)
int sock;
struct sockaddr_in *sin;
char *net_name;
char *subnet_name;
char *host_name;
{
#ifdef EXCELAN
excelan_netnames(sock, sin, net_name, subnet_name, host_name);
#else
static int gotsubnetconf;
u_long net_addr;
u_long subnet_addr;
struct hostent *hp;
struct netent *np;
#ifdef SUBNET
if (!gotsubnetconf) {
if (getifconf() < 0) {
#ifdef SYSLOG
syslog(LOG_ERR, "host_access: getifconf: %m");
#endif
return;
}
gotsubnetconf = 1;
}
#endif
net_addr = inet_netof(sin->sin_addr); /* net_addr in host order */
np = getnetbyaddr(net_addr, AF_INET);
if (np != NULL)
(void) strcpy(net_name, np->n_name);
else
(void) strcpy(net_name,inet_ntoa(*(struct in_addr *)&net_addr));
#ifdef SUBNET
subnet_addr = inet_snetof(sin->sin_addr.s_addr);
if (subnet_addr == 0)
subnet_name[0] = '\0';
else {
np = getnetbyaddr(subnet_addr, AF_INET);
if (np != NULL)
(void) strcpy(subnet_name, np->n_name);
else
(void) strcpy(subnet_name,
inet_ntoa(*(struct in_addr *)&subnet_addr));
}
#else
subnet_name[0] = '\0';
#endif SUBNET
hp = gethostbyaddr((char *) &sin->sin_addr.s_addr,
sizeof (sin->sin_addr.s_addr), AF_INET);
if (hp != NULL)
(void) strcpy(host_name, hp->h_name);
else
(void) strcpy(host_name, inet_ntoa(sin->sin_addr));
#endif
}
#ifdef EXCELAN
excelan_netnames(sock, sin, net_name, subnet_name, host_name)
int sock;
struct sockaddr_in *sin;
char *net_name;
char *subnet_name;
char *host_name;
{
char *hp, *raddr();
int octet[4];
/* assumes sizeof addr is long */
octet[0] = (sin->sin_addr.s_addr>>24)&0xff;
octet[1] = (sin->sin_addr.s_addr>>16)&0xff;
octet[2] = (sin->sin_addr.s_addr>>8 )&0xff;
octet[3] = (sin->sin_addr.s_addr )&0xff;
hp = raddr(sin->sin_addr.s_addr);
if (hp != NULL)
(void) strcpy(host_name,hp);
else
(void) sprintf(host_name,"%d.%d.%d.%d",
octet[0],octet[1],octet[2],octet[3]);
/* No inet* routines here, so we fake it. */
if (octet[0] < 128) /* CLASS A address */
(void) sprintf(net_name,"%d",octet[0]);
else if(octet[0] < 192) /* CLASS B address */
(void) sprintf(net_name,"%d.%d",
octet[0],octet[1]);
else /* CLASS C address */
(void) sprintf(net_name,"%d.%d.%d",
octet[0],octet[1],octet[2]);
/* hack to cover the subnet stuff */
(void) sprintf(subnet_name,"%d.%d.%d",octet[0],octet[1],octet[2]);
}
#endif
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.