1/*	$NetBSD: auth-skey.c,v 1.5 2017/04/18 18:41:46 christos Exp $	*/
2/* $OpenBSD: auth-skey.c,v 1.27 2007/01/21 01:41:54 stevesk Exp $ */
3/*
4 * Copyright (c) 2001 Markus Friedl.  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 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26#include "includes.h"
27__RCSID("$NetBSD: auth-skey.c,v 1.5 2017/04/18 18:41:46 christos Exp $");
28
29#ifdef SKEY
30
31#include <sys/types.h>
32
33#include <pwd.h>
34#include <stdio.h>
35
36#include <skey.h>
37
38#include "xmalloc.h"
39#include "key.h"
40#include "hostfile.h"
41#include "auth.h"
42
43#ifdef GSSAPI
44#include "buffer.h"
45#include "ssh-gss.h"
46#endif
47
48#include "monitor_wrap.h"
49
50static void *
51skey_init_ctx(Authctxt *authctxt)
52{
53	return authctxt;
54}
55
56int
57skey_query(void *ctx, char **name, char **infotxt,
58    u_int* numprompts, char ***prompts, u_int **echo_on)
59{
60	Authctxt *authctxt = ctx;
61	char challenge[1024];
62	struct skey skey;
63
64	if (skeychallenge(&skey, authctxt->user, challenge, sizeof(challenge)) == -1)
65		return -1;
66
67	*name = xstrdup("");
68	*infotxt = xstrdup("");
69	*numprompts = 1;
70	*prompts = xcalloc(*numprompts, sizeof(char *));
71	*echo_on = xcalloc(*numprompts, sizeof(u_int));
72
73	xasprintf(*prompts, "%s%s", challenge, SKEY_PROMPT);
74
75	return 0;
76}
77
78int
79skey_respond(void *ctx, u_int numresponses, char **responses)
80{
81	Authctxt *authctxt = ctx;
82
83	if (authctxt->valid &&
84	    numresponses == 1 &&
85	    skey_haskey(authctxt->pw->pw_name) == 0 &&
86	    skey_passcheck(authctxt->pw->pw_name, responses[0]) != -1)
87	    return 0;
88	return -1;
89}
90
91static void
92skey_free_ctx(void *ctx)
93{
94	/* we don't have a special context */
95}
96
97KbdintDevice skey_device = {
98	"skey",
99	skey_init_ctx,
100	skey_query,
101	skey_respond,
102	skey_free_ctx
103};
104
105KbdintDevice mm_skey_device = {
106	"skey",
107	skey_init_ctx,
108	mm_skey_query,
109	mm_skey_respond,
110	skey_free_ctx
111};
112#endif /* SKEY */
113