Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/crypto/openssh/auth2-kbdint.c
266477 views
1
/* $OpenBSD: auth2-kbdint.c,v 1.15 2024/05/17 00:30:23 djm 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 <stdlib.h>

31
#include <stdio.h>

32
#include <stdarg.h>

33


34
#include "xmalloc.h"

35
#include "packet.h"

36
#include "hostfile.h"

37
#include "auth.h"

38
#include "log.h"

39
#include "misc.h"

40
#include "servconf.h"

41
#include "ssherr.h"

42


43
/* import */

44
extern ServerOptions options;

45
extern struct authmethod_cfg methodcfg_kbdint;

46


47
static int

48
userauth_kbdint(struct ssh *ssh, const char *method)

49
{

50
	int r, authenticated = 0;

51
	char *lang, *devs;

52


53
	if ((r = sshpkt_get_cstring(ssh, &lang, NULL)) != 0 ||

54
	    (r = sshpkt_get_cstring(ssh, &devs, NULL)) != 0 ||

55
	    (r = sshpkt_get_end(ssh)) != 0)

56
		fatal_fr(r, "parse packet");

57


58
	debug("keyboard-interactive devs %s", devs);

59


60
	if (options.kbd_interactive_authentication)

61
		authenticated = auth2_challenge(ssh, devs);

62


63
	free(devs);

64
	free(lang);

65
	return authenticated;

66
}

67


68
Authmethod method_kbdint = {

69
	&methodcfg_kbdint,

70
	userauth_kbdint,

71
};

72


73