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1 | /* | |
2 | * Copyright (c) 2001 Markus Friedl. All rights reserved. | |
3 | * | |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * 1. Redistributions of source code must retain the above copyright | |
8 | * notice, this list of conditions and the following disclaimer. | |
9 | * 2. Redistributions in binary form must reproduce the above copyright | |
10 | * notice, this list of conditions and the following disclaimer in the | |
11 | * documentation and/or other materials provided with the distribution. | |
12 | * | |
13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
23 | */ | |
24 | #include "includes.h" | |
25 | RCSID("$OpenBSD: auth-skey.c,v 1.20 2002/06/30 21:59:45 deraadt Exp $"); | |
26 | ||
27 | #ifdef SKEY | |
28 | ||
29 | #include <skey.h> | |
30 | ||
31 | #include "xmalloc.h" | |
32 | #include "auth.h" | |
33 | #include "monitor_wrap.h" | |
34 | ||
35 | static void * | |
36 | skey_init_ctx(Authctxt *authctxt) | |
37 | { | |
38 | return authctxt; | |
39 | } | |
40 | ||
41 | int | |
42 | skey_query(void *ctx, char **name, char **infotxt, | |
43 | u_int* numprompts, char ***prompts, u_int **echo_on) | |
44 | { | |
45 | Authctxt *authctxt = ctx; | |
46 | char challenge[1024], *p; | |
47 | int len; | |
48 | struct skey skey; | |
49 | ||
50 | if (skeychallenge(&skey, authctxt->user, challenge) == -1) | |
51 | return -1; | |
52 | ||
53 | *name = xstrdup(""); | |
54 | *infotxt = xstrdup(""); | |
55 | *numprompts = 1; | |
56 | *prompts = xmalloc(*numprompts * sizeof(char *)); | |
57 | *echo_on = xmalloc(*numprompts * sizeof(u_int)); | |
58 | (*echo_on)[0] = 0; | |
59 | ||
60 | len = strlen(challenge) + strlen(SKEY_PROMPT) + 1; | |
61 | p = xmalloc(len); | |
62 | strlcpy(p, challenge, len); | |
63 | strlcat(p, SKEY_PROMPT, len); | |
64 | (*prompts)[0] = p; | |
65 | ||
66 | return 0; | |
67 | } | |
68 | ||
69 | int | |
70 | skey_respond(void *ctx, u_int numresponses, char **responses) | |
71 | { | |
72 | Authctxt *authctxt = ctx; | |
73 | ||
74 | if (authctxt->valid && | |
75 | numresponses == 1 && | |
76 | skey_haskey(authctxt->pw->pw_name) == 0 && | |
77 | skey_passcheck(authctxt->pw->pw_name, responses[0]) != -1) | |
78 | return 0; | |
79 | return -1; | |
80 | } | |
81 | ||
82 | static void | |
83 | skey_free_ctx(void *ctx) | |
84 | { | |
85 | /* we don't have a special context */ | |
86 | } | |
87 | ||
88 | KbdintDevice skey_device = { | |
89 | "skey", | |
90 | skey_init_ctx, | |
91 | skey_query, | |
92 | skey_respond, | |
93 | skey_free_ctx | |
94 | }; | |
95 | ||
96 | KbdintDevice mm_skey_device = { | |
97 | "skey", | |
98 | skey_init_ctx, | |
99 | mm_skey_query, | |
100 | mm_skey_respond, | |
101 | skey_free_ctx | |
102 | }; | |
103 | #endif /* SKEY */ |