1 /* $NetBSD: auth2-passwd.c,v 1.6 2016/12/25 00:07:46 christos Exp $ */ 2 /* $OpenBSD: auth2-passwd.c,v 1.12 2014/07/15 15:54:14 millert Exp $ */ 3 /* 4 * Copyright (c) 2000 Markus Friedl. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include "includes.h" 28 __RCSID("$NetBSD: auth2-passwd.c,v 1.6 2016/12/25 00:07:46 christos Exp $"); 29 #include <sys/types.h> 30 31 #include <string.h> 32 #include <stdarg.h> 33 34 #include "xmalloc.h" 35 #include "packet.h" 36 #include "log.h" 37 #include "key.h" 38 #include "hostfile.h" 39 #include "auth.h" 40 #include "buffer.h" 41 #ifdef GSSAPI 42 #include "ssh-gss.h" 43 #endif 44 #include "monitor_wrap.h" 45 #include "misc.h" 46 #include "servconf.h" 47 48 /* import */ 49 extern ServerOptions options; 50 51 static int 52 userauth_passwd(Authctxt *authctxt) 53 { 54 char *password, *newpass; 55 int authenticated = 0; 56 int change; 57 u_int len, newlen; 58 59 change = packet_get_char(); 60 password = packet_get_string(&len); 61 if (change) { 62 /* discard new password from packet */ 63 newpass = packet_get_string(&newlen); 64 explicit_bzero(newpass, newlen); 65 free(newpass); 66 } 67 packet_check_eom(); 68 69 if (change) 70 logit("password change not supported"); 71 else if (PRIVSEP(auth_password(authctxt, password)) == 1) 72 authenticated = 1; 73 explicit_bzero(password, len); 74 free(password); 75 return authenticated; 76 } 77 78 Authmethod method_passwd = { 79 "password", 80 userauth_passwd, 81 &options.password_authentication 82 }; 83