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Trim a domain part for wtmp as same as showed by "netstat -r". 

Here is a some example for avoiding a confusion.

 It asssumes a logged host domain is "spec.co.jp". All
example is longer than UT_HOSTNAMELEN value.

   1) turbo.tama.spec.co.jp: 192.19.0.2  -> trubo.tama
   2) turbo.tama.foo.co.jp : 192.19.0.2  -> 192.19.0.2
   3) specgw.spec.co.jp    : 202.32.13.1 -> specgw

Submitted by:	Atsushi Murai <amurai@spec.co.jp>
This commit is contained in:
Atsushi Murai 1998-06-01 08:47:04 +00:00
parent f66ca81068
commit 89caae2932
3 changed files with 47 additions and 4 deletions
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4
lib/libutil/libutil.h
View File

@ -18,7 +18,7 @@
* 5. Modifications may be freely made to this file providing the above
* conditions are met.
*
* $Id: libutil.h,v 1.13 1997/09/04 22:38:58 pst Exp $
* $Id: libutil.h,v 1.14 1998/05/28 23:17:07 brian Exp $
*/
#ifndef _LIBUTIL_H_
@ -37,13 +37,13 @@ void login __P((struct utmp *_ut));
int login_tty __P((int _fd));
int logout __P((char *_line));
void logwtmp __P((const char *_line, const char *_name, const char *_host));
void trimdomain __P((char *_fullhost, int _hostsize));
int openpty __P((int *_amaster, int *_aslave, char *_name,
struct termios *_termp, struct winsize *_winp));
int forkpty __P((int *_amaster, char *_name,
struct termios *_termp, struct winsize *_winp));
const char *uu_lockerr __P((int _uu_lockresult));
int uu_lock __P((const char *_ttyname));
int uu_lock_txfr __P((const char *_ttyname, pid_t _pid));
int uu_unlock __P((const char *_ttyname));
int _secure_path __P((const char *_path, uid_t _uid, gid_t _gid));
__END_DECLS

41
lib/libutil/logwtmp.c
View File

@ -36,10 +36,11 @@
static char sccsid[] = "@(#)logwtmp.c 8.1 (Berkeley) 6/4/93";
#else
static const char rcsid[] =
"$Id: logwtmp.c,v 1.4 1997/08/13 20:42:18 steve Exp $";
"$Id: logwtmp.c,v 1.5 1997/09/04 22:38:59 pst Exp $";
#endif
#endif /* LIBC_SCCS and not lint */
#include <sys/param.h>
#include <sys/types.h>
#include <sys/file.h>
#include <sys/stat.h>
@ -53,6 +54,37 @@ static const char rcsid[] =
#include <unistd.h>
#include <utmp.h>
void
trimdomain( char * fullhost, int hostsize )
{
static char domain[MAXHOSTNAMELEN + 1];
static int first = 1;
char *s;
if (first) {
first = 0;
if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
(s = strchr(domain, '.')))
(void) strcpy(domain, s + 1);
else
domain[0] = 0;
}
if (domain[0]) {
s = fullhost;
while ((fullhost = strchr(fullhost, '.'))) {
if (!strcasecmp(fullhost + 1, domain)) {
if ( fullhost - s < hostsize ) {
*fullhost = '\0'; /* hit it and acceptable size*/
}
break;
} else {
fullhost++;
}
}
}
}
void
logwtmp(line, name, host)
const char *line;
@ -61,7 +93,14 @@ logwtmp(line, name, host)
{
struct utmp ut;
struct stat buf;
char fullhost[MAXHOSTNAMELEN + 1];
char *whost = fullhost;
int fd;
strncpy( whost, host, MAXHOSTNAMELEN );
fullhost[MAXHOSTNAMELEN] = '\0';
trimdomain( whost, UT_HOSTSIZE );
host = whost;
if (strlen(host) > UT_HOSTSIZE) {
struct hostent *hp = gethostbyname(host);

6
usr.bin/login/login.c
View File

@ -42,7 +42,7 @@ static char copyright[] =
static char sccsid[] = "@(#)login.c 8.4 (Berkeley) 4/2/94";
#endif
static const char rcsid[] =
"$Id: login.c,v 1.33 1998/04/30 16:48:20 peter Exp $";
"$Id: login.c,v 1.34 1998/04/30 16:50:07 peter Exp $";
#endif /* not lint */
/*
@ -118,6 +118,7 @@ int klogin __P((struct passwd *, char *, char *, char *));
#endif
extern void login __P((struct utmp *));
extern void trimdomain __P((char *, int));
static void usage __P((void));
#define TTYGRPNAME "tty" /* name of group to own ttys */
@ -213,6 +214,9 @@ main(argc, argv)
if (domain && (p = strchr(optarg, '.')) &&
strcasecmp(p, domain) == 0)
*p = 0;
trimdomain(optarg, UT_HOSTSIZE );
if (strlen(optarg) > UT_HOSTSIZE) {
struct hostent *hp = gethostbyname(optarg);