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Ben Lindstromd1aed9c2001-06-10 00:41:18 +00001/*
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"
Ben Lindstroma962c2f2002-07-04 00:14:17 +000025RCSID("$OpenBSD: auth-skey.c,v 1.20 2002/06/30 21:59:45 deraadt Exp $");
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000026
27#ifdef SKEY
28
29#include <skey.h>
30
31#include "xmalloc.h"
32#include "auth.h"
Ben Lindstrom7a2073c2002-03-22 02:30:41 +000033#include "monitor_wrap.h"
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000034
35static void *
36skey_init_ctx(Authctxt *authctxt)
37{
38 return authctxt;
39}
40
Ben Lindstrom58d4daf2002-05-15 16:14:36 +000041int
Damien Miller9f0f5c62001-12-21 14:45:46 +110042skey_query(void *ctx, char **name, char **infotxt,
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000043 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
Ben Lindstromcb72e4f2002-06-21 00:41:51 +000053 *name = xstrdup("");
54 *infotxt = xstrdup("");
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000055 *numprompts = 1;
Ben Lindstroma962c2f2002-07-04 00:14:17 +000056 *prompts = xmalloc(*numprompts * sizeof(char *));
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000057 *echo_on = xmalloc(*numprompts * sizeof(u_int));
58 (*echo_on)[0] = 0;
59
Ben Lindstrom7a2073c2002-03-22 02:30:41 +000060 len = strlen(challenge) + strlen(SKEY_PROMPT) + 1;
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000061 p = xmalloc(len);
Damien Millerdf224032002-01-22 23:25:46 +110062 strlcpy(p, challenge, len);
Ben Lindstrom7a2073c2002-03-22 02:30:41 +000063 strlcat(p, SKEY_PROMPT, len);
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000064 (*prompts)[0] = p;
65
66 return 0;
67}
68
Ben Lindstrom58d4daf2002-05-15 16:14:36 +000069int
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000070skey_respond(void *ctx, u_int numresponses, char **responses)
71{
72 Authctxt *authctxt = ctx;
Damien Miller9f0f5c62001-12-21 14:45:46 +110073
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000074 if (authctxt->valid &&
Damien Miller9f0f5c62001-12-21 14:45:46 +110075 numresponses == 1 &&
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000076 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
82static void
83skey_free_ctx(void *ctx)
84{
85 /* we don't have a special context */
86}
87
88KbdintDevice skey_device = {
89 "skey",
90 skey_init_ctx,
91 skey_query,
92 skey_respond,
93 skey_free_ctx
94};
Ben Lindstrom7a2073c2002-03-22 02:30:41 +000095
96KbdintDevice mm_skey_device = {
97 "skey",
98 skey_init_ctx,
99 mm_skey_query,
100 mm_skey_respond,
101 skey_free_ctx
102};
Ben Lindstromd1aed9c2001-06-10 00:41:18 +0000103#endif /* SKEY */