auth-skey.c revision 92564 
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"
25RCSID("$OpenBSD: auth-skey.c,v 1.16 2002/01/12 13:10:29 markus Exp $");
26RCSID("$FreeBSD: head/crypto/openssh/auth-skey.c 92564 2002-03-18 10:31:33Z des $");
27
28#ifdef SKEY
29
30#include <opie.h>
31
32#include "xmalloc.h"
33#include "auth.h"
34
35static void *
36skey_init_ctx(Authctxt *authctxt)
37{
38	return authctxt;
39}
40
41#define PROMPT "\nS/Key Password: "
42
43static int
44skey_query(void *ctx, char **name, char **infotxt,
45    u_int* numprompts, char ***prompts, u_int **echo_on)
46{
47	Authctxt *authctxt = ctx;
48	char challenge[1024], *p;
49	int len;
50	struct opie opie;
51
52	if (opiechallenge(&opie, authctxt->user, challenge) == -1)
53		return -1;
54
55	*name       = xstrdup("");
56	*infotxt    = xstrdup("");
57	*numprompts = 1;
58	*prompts = xmalloc(*numprompts * sizeof(char*));
59	*echo_on = xmalloc(*numprompts * sizeof(u_int));
60	(*echo_on)[0] = 0;
61
62	len = strlen(challenge) + strlen(PROMPT) + 1;
63	p = xmalloc(len);
64	strlcpy(p, challenge, len);
65	strlcat(p, PROMPT, len);
66	(*prompts)[0] = p;
67
68	return 0;
69}
70
71static int
72skey_respond(void *ctx, u_int numresponses, char **responses)
73{
74	Authctxt *authctxt = ctx;
75
76	if (authctxt->valid &&
77	    numresponses == 1 &&
78	    opie_haskey(authctxt->pw->pw_name) == 0 &&
79	    opie_passverify(authctxt->pw->pw_name, responses[0]) != -1)
80	    return 0;
81	return -1;
82}
83
84static void
85skey_free_ctx(void *ctx)
86{
87	/* we don't have a special context */
88}
89
90KbdintDevice skey_device = {
91	"skey",
92	skey_init_ctx,
93	skey_query,
94	skey_respond,
95	skey_free_ctx
96};
97#endif /* SKEY */
98