/* $NetBSD: auth2-krb5.c,v 1.9.2.1 2023/12/25 12:31:03 martin Exp $ */ /* * Copyright (c) 2003 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 "includes.h" __RCSID("$NetBSD: auth2-krb5.c,v 1.9.2.1 2023/12/25 12:31:03 martin Exp $"); #include #include #include "ssh2.h" #include "xmalloc.h" #include "packet.h" #include "log.h" #include "hostfile.h" #include "auth.h" #ifdef GSSAPI #include "ssh-gss.h" #endif #include "ssherr.h" #include "monitor_wrap.h" #include "misc.h" #include "servconf.h" /* import */ extern ServerOptions options; static int userauth_kerberos(struct ssh *ssh, const char *method) { krb5_data tkt, reply; size_t dlen; char *passwd; char *client = NULL; int authenticated = 0, r; if ((r = sshpkt_get_cstring(ssh, &passwd, &dlen)) != 0 || (r = sshpkt_get_end(ssh)) != 0) fatal("%s: %s", __func__, ssh_err(r)); tkt.data = passwd; tkt.length = dlen; if (PRIVSEP(auth_krb5(ssh, &tkt, &client, &reply))) { authenticated = 1; if (reply.length) free(reply.data); } if (client) free(client); free(tkt.data); return (authenticated); } Authmethod method_kerberos = { "kerberos-2@ssh.com", NULL, userauth_kerberos, &options.kerberos_authentication };