* Copyright (c) 1990, 1993, 1994
* The Regents of the University of California. All rights reserved.
* %sccs.include.redist.c%
static char sccsid
[] = "@(#)local_passwd.c 8.3 (Berkeley) %G%";
static unsigned char itoa64
[] = /* 0 ... 63 => ascii - 64 */
"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
char buf
[_PASSWORD_LEN
+1], salt
[9];
(void)printf("Changing local password for %s.\n", pw
->pw_name
);
if (uid
&& pw
->pw_passwd
[0] &&
strcmp(crypt(getpass("Old password:"), pw
->pw_passwd
),
for (buf
[0] = '\0', tries
= 0;;) {
p
= getpass("New password:");
(void)printf("Password unchanged.\n");
if (strlen(p
) <= 5 && (uid
!= 0 || ++tries
< 2)) {
(void)printf("Please enter a longer password.\n");
for (t
= p
; *t
&& islower(*t
); ++t
);
if (!*t
&& (uid
!= 0 || ++tries
< 2)) {
(void)printf("Please don't use an all-lower case password.\nUnusual capitalization, control characters or digits are suggested.\n");
if (!strcmp(buf
, getpass("Retype new password:")))
(void)printf("Mismatch; try again, EOF to quit.\n");
/* grab a random printable character that isn't a colon */
(void)srandom((int)time((time_t *)NULL
));
salt
[0] = _PASSWORD_EFMT1
;
to64(&salt
[1], (long)(29 * 25), 4);
to64(&salt
[5], random(), 4);
to64(&salt
[0], random(), 2);
return (crypt(buf
, salt
));
if (!(pw
= getpwnam(uname
)))
errx(1, "unknown user %s", uname
);
if (uid
&& uid
!= pw
->pw_uid
)
errx(1, "%s", strerror(EACCES
));
* Get the new password. Reset passwd change time to zero; when
* classes are implemented, go and get the "offset" value for this
* class and reset the timer.
pw
->pw_passwd
= getnewpasswd(pw
);
pw_error((char *)NULL
, 0, 1);