1 /* $OpenBSD: auth2-passwd.c,v 1.9 2006/08/03 03:34:41 deraadt Exp $ */ 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" 27 28 #include <sys/types.h> 29 30 #include <string.h> 31 #include <stdarg.h> 32 33 #include "xmalloc.h" 34 #include "packet.h" 35 #include "log.h" 36 #include "key.h" 37 #include "hostfile.h" 38 #include "auth.h" 39 #include "buffer.h" 40 #ifdef GSSAPI 41 #include "ssh-gss.h" 42 #endif 43 #include "monitor_wrap.h" 44 #include "servconf.h" 45 46 /* import */ 47 extern ServerOptions options; 48 49 static int 50 userauth_passwd(Authctxt *authctxt) 51 { 52 char *password, *newpass; 53 int authenticated = 0; 54 int change; 55 u_int len, newlen; 56 57 change = packet_get_char(); 58 password = packet_get_string(&len); 59 if (change) { 60 /* discard new password from packet */ 61 newpass = packet_get_string(&newlen); 62 memset(newpass, 0, newlen); 63 xfree(newpass); 64 } 65 packet_check_eom(); 66 67 if (change) 68 logit("password change not supported"); 69 else if (PRIVSEP(auth_password(authctxt, password)) == 1) 70 authenticated = 1; 71 memset(password, 0, len); 72 xfree(password); 73 return authenticated; 74 } 75 76 Authmethod method_passwd = { 77 "password", 78 userauth_passwd, 79 &options.password_authentication 80 }; 81