1 /* $NetBSD: auth2-none.c,v 1.6 2016/12/25 00:07:46 christos Exp $ */ 2 /* $OpenBSD: auth2-none.c,v 1.18 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-none.c,v 1.6 2016/12/25 00:07:46 christos Exp $"); 29 #include <sys/types.h> 30 #include <stdarg.h> 31 #include <stdio.h> 32 33 #include "xmalloc.h" 34 #include "key.h" 35 #include "hostfile.h" 36 #include "auth.h" 37 #include "packet.h" 38 #include "log.h" 39 #include "buffer.h" 40 #include "misc.h" 41 #include "servconf.h" 42 #include "compat.h" 43 #include "ssh2.h" 44 #ifdef GSSAPI 45 #include "ssh-gss.h" 46 #endif 47 #include "monitor_wrap.h" 48 49 /* import */ 50 extern ServerOptions options; 51 52 /* "none" is allowed only one time */ 53 static int none_enabled = 1; 54 55 static int 56 userauth_none(Authctxt *authctxt) 57 { 58 none_enabled = 0; 59 packet_check_eom(); 60 if (options.permit_empty_passwd && options.password_authentication) 61 return (PRIVSEP(auth_password(authctxt, ""))); 62 return (0); 63 } 64 65 Authmethod method_none = { 66 "none", 67 userauth_none, 68 &none_enabled 69 }; 70