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1 /* $OpenBSD: auth2-kbdint.c,v 1.7 2014/07/15 15:54:14 millert Exp $ */
2 /*
3  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 
26 #include "includes.h"
27 
28 #include <sys/types.h>
29 
30 #include <stdarg.h>
31 
32 #include "xmalloc.h"
33 #include "packet.h"
34 #include "key.h"
35 #include "hostfile.h"
36 #include "auth.h"
37 #include "log.h"
38 #include "buffer.h"
39 #include "misc.h"
40 #include "servconf.h"
41 
42 /* import */
43 extern ServerOptions options;
44 
45 static int
userauth_kbdint(Authctxt * authctxt)46 userauth_kbdint(Authctxt *authctxt)
47 {
48 	int authenticated = 0;
49 	char *lang, *devs;
50 
51 	lang = packet_get_string(NULL);
52 	devs = packet_get_string(NULL);
53 	packet_check_eom();
54 
55 	debug("keyboard-interactive devs %s", devs);
56 
57 	if (options.challenge_response_authentication)
58 		authenticated = auth2_challenge(authctxt, devs);
59 
60 	free(devs);
61 	free(lang);
62 	return authenticated;
63 }
64 
65 Authmethod method_kbdint = {
66 	"keyboard-interactive",
67 	userauth_kbdint,
68 	&options.kbd_interactive_authentication
69 };
70