1 /* $NetBSD: auth2-passwd.c,v 1.2 2009/06/07 22:38:46 christos Exp $ */ 2 /* $OpenBSD: auth2-passwd.c,v 1.9 2006/08/03 03:34:41 deraadt 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 1.2 2009/06/07 22:38:46 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 "servconf.h" 46 47 /* import */ 48 extern ServerOptions options; 49 50 static int 51 userauth_passwd(Authctxt *authctxt) 52 { 53 char *password, *newpass; 54 int authenticated = 0; 55 int change; 56 u_int len, newlen; 57 58 change = packet_get_char(); 59 password = packet_get_string(&len); 60 if (change) { 61 /* discard new password from packet */ 62 newpass = packet_get_string(&newlen); 63 memset(newpass, 0, newlen); 64 xfree(newpass); 65 } 66 packet_check_eom(); 67 68 if (change) 69 logit("password change not supported"); 70 else if (PRIVSEP(auth_password(authctxt, password)) == 1) 71 authenticated = 1; 72 memset(password, 0, len); 73 xfree(password); 74 return authenticated; 75 } 76 77 Authmethod method_passwd = { 78 "password", 79 userauth_passwd, 80 &options.password_authentication 81 }; 82