Contents of /tags/mkinitrd-6_1_10/busybox/loginutils/chpasswd.c
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Wed Oct 28 09:51:31 2009 UTC (14 years, 11 months ago) by niro
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Wed Oct 28 09:51:31 2009 UTC (14 years, 11 months ago) by niro
File MIME type: text/plain
File size: 1942 byte(s)
tagged 'mkinitrd-6_1_10'
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 | static const char chpasswd_longopts[] ALIGN1 = |
13 | "encrypted\0" No_argument "e" |
14 | "md5\0" No_argument "m" |
15 | ; |
16 | #endif |
17 | |
18 | #define OPT_ENC 1 |
19 | #define OPT_MD5 2 |
20 | |
21 | int chpasswd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
22 | int chpasswd_main(int argc UNUSED_PARAM, char **argv) |
23 | { |
24 | char *name, *pass; |
25 | char salt[sizeof("$N$XXXXXXXX")]; |
26 | int opt, rc; |
27 | int rnd = rnd; /* we *want* it to be non-initialized! */ |
28 | |
29 | if (getuid()) |
30 | bb_error_msg_and_die(bb_msg_perm_denied_are_you_root); |
31 | |
32 | opt_complementary = "m--e:e--m"; |
33 | USE_GETOPT_LONG(applet_long_options = chpasswd_longopts;) |
34 | opt = getopt32(argv, "em"); |
35 | |
36 | while ((name = xmalloc_fgetline(stdin)) != NULL) { |
37 | pass = strchr(name, ':'); |
38 | if (!pass) |
39 | bb_error_msg_and_die("missing new password"); |
40 | *pass++ = '\0'; |
41 | |
42 | xuname2uid(name); /* dies if there is no such user */ |
43 | |
44 | if (!(opt & OPT_ENC)) { |
45 | rnd = crypt_make_salt(salt, 1, rnd); |
46 | if (opt & OPT_MD5) { |
47 | strcpy(salt, "$1$"); |
48 | rnd = crypt_make_salt(salt + 3, 4, rnd); |
49 | } |
50 | pass = pw_encrypt(pass, salt, 0); |
51 | } |
52 | |
53 | /* This is rather complex: if user is not found in /etc/shadow, |
54 | * we try to find & change his passwd in /etc/passwd */ |
55 | #if ENABLE_FEATURE_SHADOWPASSWDS |
56 | rc = update_passwd(bb_path_shadow_file, name, pass); |
57 | if (rc == 0) /* no lines updated, no errors detected */ |
58 | #endif |
59 | rc = update_passwd(bb_path_passwd_file, name, pass); |
60 | /* LOGMODE_BOTH logs to syslog also */ |
61 | logmode = LOGMODE_BOTH; |
62 | if (rc < 0) |
63 | bb_error_msg_and_die("an error occurred updating password for %s", name); |
64 | if (rc) |
65 | bb_info_msg("Password for '%s' changed", name); |
66 | logmode = LOGMODE_STDIO; |
67 | free(name); |
68 | if (!(opt & OPT_ENC)) |
69 | free(pass); |
70 | } |
71 | return EXIT_SUCCESS; |
72 | } |