Contents of /trunk/mkinitrd-magellan/busybox/libbb/correct_password.c
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File MIME type: text/plain
File size: 2491 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com> |
4 | * All rights reserved. |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * 3. Neither the name of Julianne F. Haugh nor the names of its contributors |
15 | * may be used to endorse or promote products derived from this software |
16 | * without specific prior written permission. |
17 | * |
18 | * THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND |
19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
21 | * ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE |
22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
28 | * SUCH DAMAGE. |
29 | */ |
30 | |
31 | #include "libbb.h" |
32 | |
33 | /* Ask the user for a password. |
34 | Return 1 if the user gives the correct password for entry PW, |
35 | 0 if not. Return 1 without asking for a password if run by UID 0 |
36 | or if PW has an empty password. */ |
37 | |
38 | int correct_password(const struct passwd *pw) |
39 | { |
40 | char *unencrypted, *encrypted, *correct; |
41 | |
42 | #ifdef CONFIG_FEATURE_SHADOWPASSWDS |
43 | if (LONE_CHAR(pw->pw_passwd, 'x') || LONE_CHAR(pw->pw_passwd, '*')) { |
44 | struct spwd *sp = getspnam(pw->pw_name); |
45 | |
46 | if (!sp) |
47 | bb_error_msg_and_die("no valid shadow password"); |
48 | |
49 | correct = sp->sp_pwdp; |
50 | } else |
51 | #endif |
52 | correct = pw->pw_passwd; |
53 | |
54 | if (!correct || correct[0] == '\0') |
55 | return 1; |
56 | |
57 | unencrypted = bb_askpass(0, "Password: "); |
58 | if (!unencrypted) { |
59 | return 0; |
60 | } |
61 | encrypted = crypt(unencrypted, correct); |
62 | memset(unencrypted, 0, strlen(unencrypted)); |
63 | return (!strcmp(encrypted, correct)) ? 1 : 0; |
64 | } |