source: branches/2.2.5/mindi-busybox/loginutils/chpasswd.c @ 1765

Last change on this file since 1765 was 1765, checked in by Bruno Cornec, 13 years ago

Update to busybox 1.7.2

  • Property svn:eol-style set to native
File size: 1.8 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * chpasswd.c
4 *
5 * Written for SLIND (from passwd.c) by Alexander Shishkin <virtuoso@slind.org>
6 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
7 */
8
9#include "libbb.h"
10
11#if ENABLE_GETOPT_LONG
12#include <getopt.h>
13
14static const char chpasswd_longopts[] ALIGN1 =
15    "encrypted\0" No_argument "e"
16    "md5\0"       No_argument "m"
17    ;
18#endif
19
20#define OPT_ENC     1
21#define OPT_MD5     2
22
23int chpasswd_main(int argc, char **argv);
24int chpasswd_main(int argc, char **argv)
25{
26    char *name, *pass;
27    char salt[sizeof("$N$XXXXXXXX")];
28    int opt, rc;
29    int rnd = rnd; /* we *want* it to be non-initialized! */
30
31    if (getuid())
32        bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
33
34    opt_complementary = "m--e:e--m";
35    USE_GETOPT_LONG(applet_long_options = chpasswd_longopts;)
36    opt = getopt32(argv, "em");
37
38    while ((name = xmalloc_getline(stdin)) != NULL) {
39        pass = strchr(name, ':');
40        if (!pass)
41            bb_error_msg_and_die("missing new password");
42        *pass++ = '\0';
43
44        xuname2uid(name); /* dies if there is no such user */
45
46        if (!(opt & OPT_ENC)) {
47            rnd = crypt_make_salt(salt, 1, rnd);
48            if (opt & OPT_MD5) {
49                strcpy(salt, "$1$");
50                rnd = crypt_make_salt(salt + 3, 4, rnd);
51            }
52            pass = pw_encrypt(pass, salt);
53        }
54
55        /* This is rather complex: if user is not found in /etc/shadow,
56         * we try to find & change his passwd in /etc/passwd */
57#if ENABLE_FEATURE_SHADOWPASSWDS
58        rc = update_passwd(bb_path_shadow_file, name, pass);
59        if (rc == 0) /* no lines updated, no errors detected */
60#endif
61            rc = update_passwd(bb_path_passwd_file, name, pass);
62        /* LOGMODE_BOTH logs to syslog also */
63        logmode = LOGMODE_BOTH;
64        if (rc < 0)
65            bb_error_msg_and_die("an error occurred updating password for %s", name);
66        if (rc)
67            bb_info_msg("Password for '%s' changed", name);
68        logmode = LOGMODE_STDIO;
69        free(name);
70    }
71
72    return 0;
73}
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