Contents of /trunk/mkinitrd-magellan/busybox/loginutils/cryptpw.c
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Sun May 30 11:32:42 2010 UTC (14 years, 4 months ago) by niro
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Sun May 30 11:32:42 2010 UTC (14 years, 4 months ago) by niro
File MIME type: text/plain
File size: 3215 byte(s)
-updated to busybox-1.16.1 and enabled blkid/uuid support in default config
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * cryptpw.c - output a crypt(3)ed password to stdout. |
4 | * |
5 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
6 | * |
7 | * Cooked from passwd.c by Thomas Lundquist <thomasez@zelow.no> |
8 | * mkpasswd compatible options added by Bernhard Reutner-Fischer |
9 | * |
10 | * Licensed under GPLv2, see file LICENSE in this tarball for details. |
11 | */ |
12 | |
13 | #include "libbb.h" |
14 | |
15 | /* Debian has 'mkpasswd' utility, manpage says: |
16 | |
17 | NAME |
18 | mkpasswd - Overfeatured front end to crypt(3) |
19 | SYNOPSIS |
20 | mkpasswd PASSWORD SALT |
21 | ... |
22 | OPTIONS |
23 | -S, --salt=STRING |
24 | Use the STRING as salt. It must not contain prefixes such as |
25 | $1$. |
26 | -R, --rounds=NUMBER |
27 | Use NUMBER rounds. This argument is ignored if the method |
28 | choosen does not support variable rounds. For the OpenBSD Blowfish |
29 | method this is the logarithm of the number of rounds. |
30 | -m, --method=TYPE |
31 | Compute the password using the TYPE method. If TYPE is 'help' |
32 | then the available methods are printed. |
33 | -P, --password-fd=NUM |
34 | Read the password from file descriptor NUM instead of using getpass(3). |
35 | If the file descriptor is not connected to a tty then |
36 | no other message than the hashed password is printed on stdout. |
37 | -s, --stdin |
38 | Like --password-fd=0. |
39 | ENVIRONMENT |
40 | $MKPASSWD_OPTIONS |
41 | A list of options which will be evaluated before the ones |
42 | specified on the command line. |
43 | BUGS |
44 | This programs suffers of a bad case of featuritis. |
45 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
46 | |
47 | Very true... |
48 | |
49 | cryptpw was in bbox before this gem, so we retain it, and alias mkpasswd |
50 | to cryptpw. -a option (alias for -m) came from cryptpw. |
51 | */ |
52 | |
53 | int cryptpw_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
54 | int cryptpw_main(int argc UNUSED_PARAM, char **argv) |
55 | { |
56 | /* $N$ + sha_salt_16_bytes + NUL */ |
57 | char salt[3 + 16 + 1]; |
58 | char *salt_ptr; |
59 | const char *opt_m, *opt_S; |
60 | int len; |
61 | int fd; |
62 | |
63 | #if ENABLE_LONG_OPTS |
64 | static const char mkpasswd_longopts[] ALIGN1 = |
65 | "stdin\0" No_argument "s" |
66 | "password-fd\0" Required_argument "P" |
67 | "salt\0" Required_argument "S" |
68 | "method\0" Required_argument "m" |
69 | ; |
70 | applet_long_options = mkpasswd_longopts; |
71 | #endif |
72 | fd = STDIN_FILENO; |
73 | opt_m = "d"; |
74 | opt_S = NULL; |
75 | /* at most two non-option arguments; -P NUM */ |
76 | opt_complementary = "?2:P+"; |
77 | getopt32(argv, "sP:S:m:a:", &fd, &opt_S, &opt_m, &opt_m); |
78 | argv += optind; |
79 | |
80 | /* have no idea how to handle -s... */ |
81 | |
82 | if (argv[0] && !opt_S) |
83 | opt_S = argv[1]; |
84 | |
85 | len = 2/2; |
86 | salt_ptr = salt; |
87 | if (opt_m[0] != 'd') { /* not des */ |
88 | len = 8/2; /* so far assuming md5 */ |
89 | *salt_ptr++ = '$'; |
90 | *salt_ptr++ = '1'; |
91 | *salt_ptr++ = '$'; |
92 | #if !ENABLE_USE_BB_CRYPT || ENABLE_USE_BB_CRYPT_SHA |
93 | if (opt_m[0] == 's') { /* sha */ |
94 | salt[1] = '5' + (strcmp(opt_m, "sha512") == 0); |
95 | len = 16/2; |
96 | } |
97 | #endif |
98 | } |
99 | if (opt_S) |
100 | safe_strncpy(salt_ptr, opt_S, sizeof(salt) - 3); |
101 | else |
102 | crypt_make_salt(salt_ptr, len, 0); |
103 | |
104 | xmove_fd(fd, STDIN_FILENO); |
105 | |
106 | puts(pw_encrypt( |
107 | argv[0] ? argv[0] : ( |
108 | /* Only mkpasswd, and only from tty, prompts. |
109 | * Otherwise it is a plain read. */ |
110 | (isatty(STDIN_FILENO) && applet_name[0] == 'm') |
111 | ? bb_ask_stdin("Password: ") |
112 | : xmalloc_fgetline(stdin) |
113 | ), |
114 | salt, 1)); |
115 | |
116 | return EXIT_SUCCESS; |
117 | } |