jsg@openbsd.org | d5ba1c0 | 2020-02-26 13:40:09 +0000 | [diff] [blame] | 1 | /* $OpenBSD: auth2-passwd.c,v 1.18 2020/02/26 13:40:09 jsg 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> |
Damien Miller | e3476ed | 2006-07-24 14:13:33 +1000 | [diff] [blame] | 31 | #include <string.h> |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 32 | #include <stdarg.h> |
Darren Tucker | 9634ffb | 2019-07-23 22:25:44 +1000 | [diff] [blame] | 33 | #include <stdio.h> |
Damien Miller | e3476ed | 2006-07-24 14:13:33 +1000 | [diff] [blame] | 34 | |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 35 | #include "packet.h" |
markus@openbsd.org | 60306b2 | 2017-05-30 14:26:49 +0000 | [diff] [blame] | 36 | #include "ssherr.h" |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 37 | #include "log.h" |
markus@openbsd.org | 60306b2 | 2017-05-30 14:26:49 +0000 | [diff] [blame] | 38 | #include "sshkey.h" |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 39 | #include "hostfile.h" |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 40 | #include "auth.h" |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 41 | #ifdef GSSAPI |
| 42 | #include "ssh-gss.h" |
| 43 | #endif |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 44 | #include "monitor_wrap.h" |
Damien Miller | 7acefbb | 2014-07-18 14:11:24 +1000 | [diff] [blame] | 45 | #include "misc.h" |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 46 | #include "servconf.h" |
| 47 | |
| 48 | /* import */ |
| 49 | extern ServerOptions options; |
| 50 | |
| 51 | static int |
markus@openbsd.org | eb272ea | 2017-05-30 14:29:59 +0000 | [diff] [blame] | 52 | userauth_passwd(struct ssh *ssh) |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 53 | { |
markus@openbsd.org | 60306b2 | 2017-05-30 14:26:49 +0000 | [diff] [blame] | 54 | char *password; |
| 55 | int authenticated = 0, r; |
| 56 | u_char change; |
| 57 | size_t len; |
Darren Tucker | ea28706 | 2003-12-31 11:43:24 +1100 | [diff] [blame] | 58 | |
markus@openbsd.org | 60306b2 | 2017-05-30 14:26:49 +0000 | [diff] [blame] | 59 | if ((r = sshpkt_get_u8(ssh, &change)) != 0 || |
| 60 | (r = sshpkt_get_cstring(ssh, &password, &len)) != 0 || |
| 61 | (change && (r = sshpkt_get_cstring(ssh, NULL, NULL)) != 0) || |
| 62 | (r = sshpkt_get_end(ssh)) != 0) |
| 63 | fatal("%s: %s", __func__, ssh_err(r)); |
Darren Tucker | ea28706 | 2003-12-31 11:43:24 +1100 | [diff] [blame] | 64 | |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 65 | if (change) |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 66 | logit("password change not supported"); |
djm@openbsd.org | 7c85685 | 2018-03-03 03:15:51 +0000 | [diff] [blame] | 67 | else if (PRIVSEP(auth_password(ssh, password)) == 1) |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 68 | authenticated = 1; |
jsg@openbsd.org | d5ba1c0 | 2020-02-26 13:40:09 +0000 | [diff] [blame] | 69 | freezero(password, len); |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 70 | return authenticated; |
| 71 | } |
| 72 | |
| 73 | Authmethod method_passwd = { |
| 74 | "password", |
| 75 | userauth_passwd, |
| 76 | &options.password_authentication |
| 77 | }; |