mirror of
https://github.com/sheumann/hush.git
synced 2024-08-21 11:28:57 +00:00
96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* chpasswd.c
|
|
*
|
|
* Written for SLIND (from passwd.c) by Alexander Shishkin <virtuoso@slind.org>
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
#include "libbb.h"
|
|
|
|
//usage:#define chpasswd_trivial_usage
|
|
//usage: IF_LONG_OPTS("[--md5|--encrypted]") IF_NOT_LONG_OPTS("[-m|-e]")
|
|
//usage:#define chpasswd_full_usage "\n\n"
|
|
//usage: "Read user:password from stdin and update /etc/passwd\n"
|
|
//usage: IF_LONG_OPTS(
|
|
//usage: "\n -e,--encrypted Supplied passwords are in encrypted form"
|
|
//usage: "\n -m,--md5 Use MD5 encryption instead of DES"
|
|
//usage: )
|
|
//usage: IF_NOT_LONG_OPTS(
|
|
//usage: "\n -e Supplied passwords are in encrypted form"
|
|
//usage: "\n -m Use MD5 encryption instead of DES"
|
|
//usage: )
|
|
|
|
//TODO: implement -c ALGO
|
|
|
|
#if ENABLE_LONG_OPTS
|
|
static const char chpasswd_longopts[] ALIGN1 =
|
|
"encrypted\0" No_argument "e"
|
|
"md5\0" No_argument "m"
|
|
;
|
|
#endif
|
|
|
|
#define OPT_ENC 1
|
|
#define OPT_MD5 2
|
|
|
|
int chpasswd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int chpasswd_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
char *name;
|
|
int opt;
|
|
|
|
if (getuid() != 0)
|
|
bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
|
|
|
|
opt_complementary = "m--e:e--m";
|
|
IF_LONG_OPTS(applet_long_options = chpasswd_longopts;)
|
|
opt = getopt32(argv, "em");
|
|
|
|
while ((name = xmalloc_fgetline(stdin)) != NULL) {
|
|
char *free_me;
|
|
char *pass;
|
|
int rc;
|
|
|
|
pass = strchr(name, ':');
|
|
if (!pass)
|
|
bb_error_msg_and_die("missing new password");
|
|
*pass++ = '\0';
|
|
|
|
xuname2uid(name); /* dies if there is no such user */
|
|
|
|
free_me = NULL;
|
|
if (!(opt & OPT_ENC)) {
|
|
char salt[sizeof("$N$XXXXXXXX")];
|
|
|
|
crypt_make_salt(salt, 1);
|
|
if (opt & OPT_MD5) {
|
|
salt[0] = '$';
|
|
salt[1] = '1';
|
|
salt[2] = '$';
|
|
crypt_make_salt(salt + 3, 4);
|
|
}
|
|
free_me = pass = pw_encrypt(pass, salt, 0);
|
|
}
|
|
|
|
/* This is rather complex: if user is not found in /etc/shadow,
|
|
* we try to find & change his passwd in /etc/passwd */
|
|
#if ENABLE_FEATURE_SHADOWPASSWDS
|
|
rc = update_passwd(bb_path_shadow_file, name, pass, NULL);
|
|
if (rc > 0) /* password in /etc/shadow was updated */
|
|
pass = (char*)"x";
|
|
if (rc >= 0)
|
|
/* 0 = /etc/shadow missing (not an error), >0 = passwd changed in /etc/shadow */
|
|
#endif
|
|
rc = update_passwd(bb_path_passwd_file, name, pass, NULL);
|
|
/* LOGMODE_BOTH logs to syslog also */
|
|
logmode = LOGMODE_BOTH;
|
|
if (rc < 0)
|
|
bb_error_msg_and_die("an error occurred updating password for %s", name);
|
|
if (rc)
|
|
bb_info_msg("Password for '%s' changed", name);
|
|
logmode = LOGMODE_STDIO;
|
|
free(name);
|
|
free(free_me);
|
|
}
|
|
return EXIT_SUCCESS;
|
|
}
|