Exemplo n.º 1
0
/* login_init_entry(struct logininfo *, int, char*, char*, char*)
 *                                        - initialise a struct logininfo
 *
 * Populates a new struct logininfo, a data structure meant to carry
 * the information required to portably record login info.
 *
 * Returns: 1
 */
int
login_init_entry(struct logininfo *li, int pid, const char *username,
		 const char *hostname, const char *line)
{
	struct passwd *pw;

	memset(li, 0, sizeof(*li));

	li->pid = pid;

	/* set the line information */
	if (line)
		line_fullname(li->line, line, sizeof(li->line));

	if (username) {
		strlcpy(li->username, username, sizeof(li->username));
		pw = getpwnam(li->username);
		if (pw == NULL)
			dropbear_exit("login_init_entry: Cannot find user \"%s\"",
					li->username);
		li->uid = pw->pw_uid;
	}

	if (hostname)
		strlcpy(li->hostname, hostname, sizeof(li->hostname));

	return 1;
}
Exemplo n.º 2
0
		/* write the entry */
		if (atomicio(vwrite, fd, &last, sizeof(last)) != sizeof(last)) {
			close(fd);
			logit("%s: Error writing to %s: %s", __func__,
			    LASTLOG_FILE, strerror(errno));
			return (0);
		}
	
		close(fd);
		return (1);
	default:
		logit("%s: Invalid type field", __func__);
		return (0);
	}
}
#endif /* LASTLOG_WRITE_PUTUTXLINE */

#ifdef HAVE_GETLASTLOGXBYNAME
int
lastlog_get_entry(struct logininfo *li)
{
	struct lastlogx l, *ll;

	if ((ll = getlastlogxbyname(li->username, &l)) == NULL) {
		memset(&l, '\0', sizeof(l));
		ll = &l;
	}
	line_fullname(li->line, ll->ll_line, sizeof(li->line));
	strlcpy(li->hostname, ll->ll_host,
		MIN_SIZEOF(li->hostname, ll->ll_host));
	li->tv_sec = ll->ll_tv.tv_sec;
	li->tv_usec = ll->ll_tv.tv_usec;
	return (1);
}
#else /* HAVE_GETLASTLOGXBYNAME */
int
lastlog_get_entry(struct logininfo *li)
{
	struct lastlog last;
	int fd, ret;

	if (!lastlog_openseek(li, &fd, O_RDONLY))
		return (0);

	ret = atomicio(read, fd, &last, sizeof(last));
	close(fd);

	switch (ret) {
	case 0:
		memset(&last, '\0', sizeof(last));
		/* FALLTHRU */
	case sizeof(last):
		line_fullname(li->line, last.ll_line, sizeof(li->line));
		strlcpy(li->hostname, last.ll_host,
		    MIN_SIZEOF(li->hostname, last.ll_host));
		li->tv_sec = last.ll_time;
		return (1);
	case -1:
		error("%s: Error reading from %s: %s", __func__,
		    LASTLOG_FILE, strerror(errno));
		return (0);
	default:
		error("%s: Error reading from %s: Expecting %d, got %d",
		    __func__, LASTLOG_FILE, (int)sizeof(last), ret);
		return (0);
	}

	/* NOTREACHED */
	return (0);
}
Exemplo n.º 3
0
static void
lastlog_populate_entry(struct logininfo *li, struct lastlog *last)
{
	line_fullname(li->line, last->ll_line, sizeof(li->line));
	strlcpy(li->hostname, last->ll_host,
		MIN_SIZEOF(li->hostname, last->ll_host));
	li->tv_sec = last->ll_time;
}
Exemplo n.º 4
0
int
lastlog_get_entry(struct logininfo *li)
{
	struct lastlogx l, *ll;

	if ((ll = getlastlogxbyname(li->username, &l)) == NULL) {
		memset(&l, '\0', sizeof(l));
		ll = &l;
	}
	line_fullname(li->line, ll->ll_line, sizeof(li->line));
	strlcpy(li->hostname, ll->ll_host,
		MIN_SIZEOF(li->hostname, ll->ll_host));
	li->tv_sec = ll->ll_tv.tv_sec;
	li->tv_usec = ll->ll_tv.tv_usec;
	return (1);
}
Exemplo n.º 5
0
void
testLineName(char *line)
{
	/* have to null-terminate - these functions are designed for
	 * structures with fixed-length char arrays, and don't null-term.*/
	char full[17], strip[9], abbrev[5];

	memset(full, '\0', sizeof(full));
	memset(strip, '\0', sizeof(strip));
	memset(abbrev, '\0', sizeof(abbrev));

	line_fullname(full, line, sizeof(full)-1);
	line_stripname(strip, full, sizeof(strip)-1);
	line_abbrevname(abbrev, full, sizeof(abbrev)-1);
	printf("%s: %s, %s, %s\n", line, full, strip, abbrev);

} /* testLineName() */
Exemplo n.º 6
0
int
utmpx_get_entry(struct logininfo *li)
{
	struct utmpx *utx;

	if (setutxdb(UTXDB_LASTLOGIN, NULL) != 0)
		return (0);
	utx = getutxuser(li->username);
	if (utx == NULL) {
		endutxent();
		return (0);
	}

	line_fullname(li->line, utx->ut_line,
	    MIN_SIZEOF(li->line, utx->ut_line));
	strlcpy(li->hostname, utx->ut_host,
	    MIN_SIZEOF(li->hostname, utx->ut_host));
	li->tv_sec = utx->ut_tv.tv_sec;
	li->tv_usec = utx->ut_tv.tv_usec;
	endutxent();
	return (1);
}
Exemplo n.º 7
0
/* login_init_entry(struct logininfo *, int, char*, char*, char*)
 *                                        - initialise a struct logininfo
 *
 * Populates a new struct logininfo, a data structure meant to carry
 * the information required to portably record login info.
 *
 * Returns: 1
 */
int
login_init_entry(struct logininfo *li, int pid, const char *username,
		 const char *hostname, const char *line)
{
	struct passwd *pw;

	memset(li, 0, sizeof(*li));

	li->pid = pid;

	/* set the line information */
	if (line)
		line_fullname(li->line, line, sizeof(li->line));

	if (username) {
		strlcpy(li->username, username, sizeof(li->username));
		pw = getpwnam(li->username);

		if (pw == NULL) {
#if 0
                /*
                 * This behavior caused bug 12199.
                 */
			fatal("login_init_entry: Cannot find user \"%s\"", li->username);
#else
                li->uid = -1;
#endif
                }
                else {
                    li->uid = pw->pw_uid;
                }
	}

	if (hostname)
		strlcpy(li->hostname, hostname, sizeof(li->hostname));

	return 1;
}
Exemplo n.º 8
0
int
wtmpx_get_entry(struct logininfo *li)
{
	struct stat st;
	struct utmpx utx;
	int fd, found=0;

	/* Clear the time entries */
	li->tv_sec = li->tv_usec = 0;

	if ((fd = open(WTMPX_FILE, O_RDONLY)) < 0) {
		logit("wtmpx_get_entry: problem opening %s: %s",
		    WTMPX_FILE, strerror(errno));
		return 0;
	}
	if (fstat(fd, &st) != 0) {
		logit("wtmpx_get_entry: couldn't stat %s: %s",
		    WTMPX_FILE, strerror(errno));
		close(fd);
		return 0;
	}

	/* Seek to the start of the last struct utmpx */
	if (lseek(fd, -(off_t)sizeof(struct utmpx), SEEK_END) == -1 ) {
		/* probably a newly rotated wtmpx file */
		close(fd);
		return 0;
	}

	while (!found) {
		if (atomicio(read, fd, &utx, sizeof(utx)) != sizeof(utx)) {
			logit("wtmpx_get_entry: read of %s failed: %s",
			    WTMPX_FILE, strerror(errno));
			close (fd);
			return 0;
		}
		/* Logouts are recorded as a blank username on a particular line.
		 * So, we just need to find the username in struct utmpx */
		if ( wtmpx_islogin(li, &utx) ) {
			found = 1;
# ifdef HAVE_TV_IN_UTMPX
			li->tv_sec = utx.ut_tv.tv_sec;
# else
#  ifdef HAVE_TIME_IN_UTMPX
			li->tv_sec = utx.ut_time;
#  endif
# endif
			line_fullname(li->line, utx.ut_line, sizeof(li->line));
# ifdef HAVE_HOST_IN_UTMPX
			strlcpy(li->hostname, utx.ut_host,
				MIN_SIZEOF(li->hostname, utx.ut_host));
# endif
			continue;
		}
		if (lseek(fd, -(off_t)(2 * sizeof(struct utmpx)), SEEK_CUR) == -1) {
			close (fd);
			return 0;
		}
	}

	close(fd);
	return 1;
}
Exemplo n.º 9
0
int
wtmp_get_entry(struct logininfo *li)
{
	struct stat st;
	struct utmp ut;
	int fd, found=0;

	/* Clear the time entries in our logininfo */
	li->tv_sec = li->tv_usec = 0;

	if ((fd = open(WTMP_FILE, O_RDONLY)) < 0) {
		logit("wtmp_get_entry: problem opening %s: %s",
		    WTMP_FILE, strerror(errno));
		return 0;
	}
	if (fstat(fd, &st) != 0) {
		logit("wtmp_get_entry: couldn't stat %s: %s",
		    WTMP_FILE, strerror(errno));
		close(fd);
		return 0;
	}

	/* Seek to the start of the last struct utmp */
	if (lseek(fd, -(off_t)sizeof(struct utmp), SEEK_END) == -1) {
		/* Looks like we've got a fresh wtmp file */
		close(fd);
		return 0;
	}

	while (!found) {
		if (atomicio(read, fd, &ut, sizeof(ut)) != sizeof(ut)) {
			logit("wtmp_get_entry: read of %s failed: %s",
			    WTMP_FILE, strerror(errno));
			close (fd);
			return 0;
		}
		if ( wtmp_islogin(li, &ut) ) {
			found = 1;
			/* We've already checked for a time in struct
			 * utmp, in login_getlast(). */
# ifdef HAVE_TIME_IN_UTMP
			li->tv_sec = ut.ut_time;
# else
#  if HAVE_TV_IN_UTMP
			li->tv_sec = ut.ut_tv.tv_sec;
#  endif
# endif
			line_fullname(li->line, ut.ut_line,
				      MIN_SIZEOF(li->line, ut.ut_line));
# ifdef HAVE_HOST_IN_UTMP
			strlcpy(li->hostname, ut.ut_host,
				MIN_SIZEOF(li->hostname, ut.ut_host));
# endif
			continue;
		}
		/* Seek back 2 x struct utmp */
		if (lseek(fd, -(off_t)(2 * sizeof(struct utmp)), SEEK_CUR) == -1) {
			/* We've found the start of the file, so quit */
			close (fd);
			return 0;
		}
	}

	/* We found an entry. Tidy up and return */
	close(fd);
	return 1;
}