djm@openbsd.org | 7c85685 | 2018-03-03 03:15:51 +0000 | [diff] [blame] | 1 | /* $OpenBSD: auth2-passwd.c,v 1.15 2018/03/03 03:15:51 djm 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 | |
Damien Miller | e3476ed | 2006-07-24 14:13:33 +1000 | [diff] [blame] | 30 | #include <string.h> |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 31 | #include <stdarg.h> |
Damien Miller | e3476ed | 2006-07-24 14:13:33 +1000 | [diff] [blame] | 32 | |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 33 | #include "packet.h" |
markus@openbsd.org | 60306b2 | 2017-05-30 14:26:49 +0000 | [diff] [blame] | 34 | #include "ssherr.h" |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 35 | #include "log.h" |
markus@openbsd.org | 60306b2 | 2017-05-30 14:26:49 +0000 | [diff] [blame] | 36 | #include "sshkey.h" |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 37 | #include "hostfile.h" |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 38 | #include "auth.h" |
Damien Miller | d783435 | 2006-08-05 12:39:39 +1000 | [diff] [blame] | 39 | #include "buffer.h" |
| 40 | #ifdef GSSAPI |
| 41 | #include "ssh-gss.h" |
| 42 | #endif |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 43 | #include "monitor_wrap.h" |
Damien Miller | 7acefbb | 2014-07-18 14:11:24 +1000 | [diff] [blame] | 44 | #include "misc.h" |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 45 | #include "servconf.h" |
| 46 | |
| 47 | /* import */ |
| 48 | extern ServerOptions options; |
| 49 | |
| 50 | static int |
markus@openbsd.org | eb272ea | 2017-05-30 14:29:59 +0000 | [diff] [blame] | 51 | userauth_passwd(struct ssh *ssh) |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 52 | { |
markus@openbsd.org | 60306b2 | 2017-05-30 14:26:49 +0000 | [diff] [blame] | 53 | char *password; |
| 54 | int authenticated = 0, r; |
| 55 | u_char change; |
| 56 | size_t len; |
Darren Tucker | ea28706 | 2003-12-31 11:43:24 +1100 | [diff] [blame] | 57 | |
markus@openbsd.org | 60306b2 | 2017-05-30 14:26:49 +0000 | [diff] [blame] | 58 | if ((r = sshpkt_get_u8(ssh, &change)) != 0 || |
| 59 | (r = sshpkt_get_cstring(ssh, &password, &len)) != 0 || |
| 60 | (change && (r = sshpkt_get_cstring(ssh, NULL, NULL)) != 0) || |
| 61 | (r = sshpkt_get_end(ssh)) != 0) |
| 62 | fatal("%s: %s", __func__, ssh_err(r)); |
Darren Tucker | ea28706 | 2003-12-31 11:43:24 +1100 | [diff] [blame] | 63 | |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 64 | if (change) |
Damien Miller | 996acd2 | 2003-04-09 20:59:48 +1000 | [diff] [blame] | 65 | logit("password change not supported"); |
djm@openbsd.org | 7c85685 | 2018-03-03 03:15:51 +0000 | [diff] [blame] | 66 | else if (PRIVSEP(auth_password(ssh, password)) == 1) |
Ben Lindstrom | 855bf3a | 2002-06-06 20:27:55 +0000 | [diff] [blame] | 67 | authenticated = 1; |
Damien Miller | a5103f4 | 2014-02-04 11:20:14 +1100 | [diff] [blame] | 68 | explicit_bzero(password, len); |
Darren Tucker | a627d42 | 2013-06-02 07:31:17 +1000 | [diff] [blame] | 69 | free(password); |
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 | }; |