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/*
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <sys/types.h>
#include <sys/file.h>
#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <utmp.h>
#ifdef HAVE_SETUTXENT
#include <utmpx.h>
#endif
#ifndef UTMP_FILE
#define UTMP_FILE "/etc/utmp"
#endif
#ifndef WTMP_FILE
#define WTMP_FILE "/usr/adm/wtmp"
#endif
#ifndef EMPTY
/* linux has UT_UNKNOWN but not EMPTY */
#define EMPTY UT_UNKNOWN
#endif
void update_utmp();
void update_wtmp();
void logwtmp();
void update_utmp(ent, username, line, host)
struct utmp *ent;
char *username, *line, *host;
{
char *tmpx;
#ifdef HAVE_SETUTENT
struct utmp ut;
char utmp_id[5];
#else
struct stat statb;
#endif
#ifdef HAVE_SETUTXENT
struct utmpx utx;
#endif
strncpy(ent->ut_line, line+sizeof("/dev/")-1, sizeof(ent->ut_line));
ent->ut_time = time(0);
#ifndef NO_UT_HOST
if (host)
strncpy(ent->ut_host, host, sizeof(ent->ut_host));
else
ent->ut_host[0] = '\0';
#endif
#ifdef HAVE_SETUTENT
tmpx = line + strlen(line)-1;
if (*(tmpx-1) != '/') tmpx--; /* last two characters, unless it's a / */
sprintf(utmp_id, "kl%s", tmpx);
strncpy(ent->ut_id, utmp_id, sizeof(ent->ut_id));
strncpy(ent->ut_user, username, sizeof(ent->ut_user));
#else
strncpy(ent->ut_name, username, sizeof(ent->ut_name));
#endif
#ifdef HAVE_SETUTXENT
getutmpx(ent, &utx);
getutxid(&ent);
setutxent();
pututxline(&utx);
endutxent();
#endif
#ifdef HAVE_SETUTENT
utmpname(UTMP_FILE);
setutent();
getutid(ent);
pututline(ent);
endutent();
#else /* HAVE_SETUTENT */
tty = ttyslot();
if (tty > 0 && (fd = open(UTMP_FILE, O_WRONLY, 0)) >= 0) {
(void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET);
(void)write(fd, (char *)ent, sizeof(struct utmp));
(void)close(fd);
}
#endif /* HAVE_SETUTENT */
update_wtmp(ent);
}
void update_wtmp(ent)
struct utmp *ent;
{
#ifdef HAVE_SETUTXENT
struct utmpx utx;
getutmpx(ent, &utx);
updwtmpx(&utx);
#endif
#ifdef HAVE_UPDWTMP
updwtmp(WTMP_FILE, ent);
#else /* HAVE_UPDWTMP */
#ifdef HAVE_SETUTENT
utmpname(WTMP_FILE);
setutent();
pututline(ent);
endutent();
#else /* HAVE_SETUTENT */
if ((fd = open(WTMP_FILE, O_WRONLY|O_APPEND, 0)) >= 0) {
if (!fstat(fd, &statb)) {
if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
sizeof(struct utmp))
(void)ftruncate(fd, statb.st_size);
}
(void)close(fd);
}
#endif /* HAVE_SETUTENT */
#endif /* HAVE_UPDWTMP */
}
void logwtmp(tty, locuser, host, loggingin)
char *tty;
char *locuser;
char *host;
int loggingin;
{
struct utmp ut;
char *tmpx;
char utmp_id[5];
#ifndef NO_UT_HOST
strncpy(ut.ut_host, host, sizeof(ut.ut_host));
#endif
strncpy(ut.ut_line, tty, sizeof(ut.ut_line));
ut.ut_time = time(0);
#ifdef HAVE_SETUTENT
strncpy(ut.ut_user, locuser, sizeof(ut.ut_user));
tmpx = tty + strlen(tty) - 2;
sprintf(utmp_id, "kr%s", tmpx);
strncpy(ut.ut_id, utmp_id, sizeof(ut.ut_id));
ut.ut_type = (loggingin ? USER_PROCESS : DEAD_PROCESS);
#ifndef NO_UT_PID
ut.ut_pid = (loggingin ? getpid() : 0);
#endif
#endif
update_wtmp(&ut);
}
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