/* $OpenBSD: auth2-none.c,v 1.25 2023/03/05 05:34:09 dtucker Exp $ */ /* * Copyright (c) 2000 Markus Friedl. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include "xmalloc.h" #include "sshkey.h" #include "hostfile.h" #include "auth.h" #include "packet.h" #include "log.h" #include "misc.h" #include "servconf.h" #include "ssh2.h" #include "ssherr.h" #ifdef GSSAPI #include "ssh-gss.h" #endif #include "monitor_wrap.h" /* import */ extern ServerOptions options; /* "none" is allowed only one time */ static int none_enabled = 1; static int userauth_none(struct ssh *ssh, const char *method) { int r; none_enabled = 0; if ((r = sshpkt_get_end(ssh)) != 0) fatal_fr(r, "parse packet"); if (options.permit_empty_passwd && options.password_authentication) return (PRIVSEP(auth_password(ssh, ""))); return (0); } Authmethod method_none = { "none", NULL, userauth_none, &none_enabled };