1 /* $NetBSD: auth2-krb5.c,v 1.1 2009/06/07 22:38:46 christos Exp $ */ 2 /* 3 * Copyright (c) 2003 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 __RCSID("$NetBSD: auth2-krb5.c,v 1.1 2009/06/07 22:38:46 christos Exp $"); 28 29 #include <krb5.h> 30 #include <stdio.h> 31 32 #include "ssh2.h" 33 #include "xmalloc.h" 34 #include "packet.h" 35 #include "log.h" 36 #include "key.h" 37 #include "buffer.h" 38 #include "hostfile.h" 39 #include "auth.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_kerberos(Authctxt *authctxt) 51 { 52 krb5_data tkt, reply; 53 u_int dlen; 54 char *client = NULL; 55 int authenticated = 0; 56 57 tkt.data = packet_get_string(&dlen); 58 tkt.length = dlen; 59 packet_check_eom(); 60 61 if (PRIVSEP(auth_krb5(authctxt, &tkt, &client, &reply))) { 62 authenticated = 1; 63 if (reply.length) 64 xfree(reply.data); 65 } 66 if (client) 67 xfree(client); 68 xfree(tkt.data); 69 return (authenticated); 70 } 71 72 Authmethod method_kerberos = { 73 "kerberos-2@ssh.com", 74 userauth_kerberos, 75 &options.kerberos_authentication 76 }; 77