NetBSD/libexec/identd/netbsd.c

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/* $NetBSD: netbsd.c,v 1.21 2003/07/05 12:34:12 tsutsui Exp $ */
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/*
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** netbsd.c Low level kernel access functions for NetBSD
**
** This program is in the public domain and may be used freely by anyone
** who wants to.
**
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** Last update: 15 July 1998
**
** Please send bug fixes/bug reports to: Peter Eriksson <pen@lysator.liu.se>
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/param.h>
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#include <sys/sysctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip_var.h>
#include <netinet/tcp.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include "identd.h"
#include "error.h"
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int k_open()
{
return 0;
}
/*
** Return the user number for the connection owner
*/
int k_getuid(
struct in_addr *faddr,
int fport,
struct in_addr *laddr,
int lport,
int *uid
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#ifdef ALLOW_FORMAT
, int *pid
, char **cmd
, char **cmd_and_args
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#endif
)
{
int mib[8];
uid_t myuid = -1;
size_t uidlen = sizeof(myuid);
int rv;
mib[0] = CTL_NET;
mib[1] = PF_INET;
mib[2] = IPPROTO_TCP;
mib[3] = TCPCTL_IDENT;
mib[4] = (int)faddr->s_addr;
mib[5] = fport;
mib[6] = (int)laddr->s_addr;
mib[7] = lport;
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if ((rv = sysctl(mib, sizeof(mib) / sizeof(mib[0]), &myuid, &uidlen,
NULL, 0)) < 0) {
ERROR1("k_getuid: sysctl 1: %s", strerror(errno));
return -1;
}
*uid = myuid;
return 0;
}