deraadt@openbsd.org | 72687c8 | 2019-11-13 04:47:52 +0000 | [diff] [blame] | 1 | /* $OpenBSD: auth2-kbdint.c,v 1.11 2019/11/13 04:47:52 deraadt Exp $ */ |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 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" |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 27 | |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 28 | #include <sys/types.h> |
| 29 | |
djm@openbsd.org | be02d7c | 2019-09-06 04:53:27 +0000 | [diff] [blame] | 30 | #include <stdlib.h> |
| 31 | #include <stdio.h> |
deraadt@openbsd.org | 72687c8 | 2019-11-13 04:47:52 +0000 | [diff] [blame] | 32 | #include <stdarg.h> |
djm@openbsd.org | be02d7c | 2019-09-06 04:53:27 +0000 | [diff] [blame] | 33 | |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 34 | #include "xmalloc.h" |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 35 | #include "packet.h" |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 36 | #include "hostfile.h" |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 37 | #include "auth.h" |
| 38 | #include "log.h" |
Damien Miller | 7acefbb | 2014-07-18 14:11:24 +1000 | [diff] [blame] | 39 | #include "misc.h" |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 40 | #include "servconf.h" |
markus@openbsd.org | c7d39ac | 2018-07-09 21:35:50 +0000 | [diff] [blame] | 41 | #include "ssherr.h" |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 42 | |
| 43 | /* import */ |
| 44 | extern ServerOptions options; |
| 45 | |
| 46 | static int |
markus@openbsd.org | eb272ea | 2017-05-30 14:29:59 +0000 | [diff] [blame] | 47 | userauth_kbdint(struct ssh *ssh) |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 48 | { |
markus@openbsd.org | c7d39ac | 2018-07-09 21:35:50 +0000 | [diff] [blame] | 49 | int r, authenticated = 0; |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 50 | char *lang, *devs; |
| 51 | |
markus@openbsd.org | c7d39ac | 2018-07-09 21:35:50 +0000 | [diff] [blame] | 52 | if ((r = sshpkt_get_cstring(ssh, &lang, NULL)) != 0 || |
| 53 | (r = sshpkt_get_cstring(ssh, &devs, NULL)) != 0 || |
| 54 | (r = sshpkt_get_end(ssh)) != 0) |
| 55 | fatal("%s: %s", __func__, ssh_err(r)); |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 56 | |
| 57 | debug("keyboard-interactive devs %s", devs); |
| 58 | |
| 59 | if (options.challenge_response_authentication) |
markus@openbsd.org | eb272ea | 2017-05-30 14:29:59 +0000 | [diff] [blame] | 60 | authenticated = auth2_challenge(ssh, devs); |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 61 | |
Darren Tucker | a627d42 | 2013-06-02 07:31:17 +1000 | [diff] [blame] | 62 | free(devs); |
| 63 | free(lang); |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 64 | return authenticated; |
| 65 | } |
| 66 | |
| 67 | Authmethod method_kbdint = { |
| 68 | "keyboard-interactive", |
| 69 | userauth_kbdint, |
| 70 | &options.kbd_interactive_authentication |
| 71 | }; |