1 /* $NetBSD: auth_none.c,v 1.13 2000/01/22 22:19:17 mycroft Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 * Copyright (c) 2009, Sun Microsystems, Inc. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions are met: 11 * - Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above copyright notice, 14 * this list of conditions and the following disclaimer in the documentation 15 * and/or other materials provided with the distribution. 16 * - Neither the name of Sun Microsystems, Inc. nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #if defined(LIBC_SCCS) && !defined(lint) 34 static char *sccsid2 = "@(#)auth_none.c 1.19 87/08/11 Copyr 1984 Sun Micro"; 35 static char *sccsid = "@(#)auth_none.c 2.1 88/07/29 4.0 RPCSRC"; 36 #endif 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 /* 41 * auth_none.c 42 * Creates a client authentication handle for passing "null" 43 * credentials and verifiers to remote systems. 44 * 45 * Copyright (C) 1984, Sun Microsystems, Inc. 46 */ 47 48 #include "namespace.h" 49 #include "reentrant.h" 50 #include <assert.h> 51 #include <stdlib.h> 52 #include <rpc/types.h> 53 #include <rpc/xdr.h> 54 #include <rpc/auth.h> 55 #include "un-namespace.h" 56 #include "mt_misc.h" 57 58 #define MAX_MARSHAL_SIZE 20 59 60 /* 61 * Authenticator operations routines 62 */ 63 64 static bool_t authnone_marshal (AUTH *, XDR *); 65 static void authnone_verf (AUTH *); 66 static bool_t authnone_validate (AUTH *, struct opaque_auth *); 67 static bool_t authnone_refresh (AUTH *, void *); 68 static void authnone_destroy (AUTH *); 69 70 extern bool_t xdr_opaque_auth(XDR *, struct opaque_auth *); 71 72 static struct auth_ops *authnone_ops(void); 73 74 static struct authnone_private { 75 AUTH no_client; 76 char marshalled_client[MAX_MARSHAL_SIZE]; 77 u_int mcnt; 78 } *authnone_private; 79 80 AUTH * 81 authnone_create(void) 82 { 83 struct authnone_private *ap = authnone_private; 84 XDR xdr_stream; 85 XDR *xdrs; 86 87 mutex_lock(&authnone_lock); 88 if (ap == NULL) { 89 ap = calloc(1, sizeof (*ap)); 90 if (ap == NULL) { 91 mutex_unlock(&authnone_lock); 92 return (0); 93 } 94 authnone_private = ap; 95 } 96 if (!ap->mcnt) { 97 ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth; 98 ap->no_client.ah_ops = authnone_ops(); 99 xdrs = &xdr_stream; 100 xdrmem_create(xdrs, ap->marshalled_client, 101 (u_int)MAX_MARSHAL_SIZE, XDR_ENCODE); 102 (void)xdr_opaque_auth(xdrs, &ap->no_client.ah_cred); 103 (void)xdr_opaque_auth(xdrs, &ap->no_client.ah_verf); 104 ap->mcnt = XDR_GETPOS(xdrs); 105 XDR_DESTROY(xdrs); 106 } 107 mutex_unlock(&authnone_lock); 108 return (&ap->no_client); 109 } 110 111 /*ARGSUSED*/ 112 static bool_t 113 authnone_marshal(AUTH *client, XDR *xdrs) 114 { 115 struct authnone_private *ap; 116 bool_t dummy; 117 118 assert(xdrs != NULL); 119 120 ap = authnone_private; 121 if (ap == NULL) { 122 mutex_unlock(&authnone_lock); 123 return (FALSE); 124 } 125 dummy = (*xdrs->x_ops->x_putbytes)(xdrs, 126 ap->marshalled_client, ap->mcnt); 127 mutex_unlock(&authnone_lock); 128 return (dummy); 129 } 130 131 /* All these unused parameters are required to keep ANSI-C from grumbling */ 132 /*ARGSUSED*/ 133 static void 134 authnone_verf(AUTH *client) 135 { 136 } 137 138 /*ARGSUSED*/ 139 static bool_t 140 authnone_validate(AUTH *client, struct opaque_auth *opaque) 141 { 142 143 return (TRUE); 144 } 145 146 /*ARGSUSED*/ 147 static bool_t 148 authnone_refresh(AUTH *client, void *dummy) 149 { 150 151 return (FALSE); 152 } 153 154 /*ARGSUSED*/ 155 static void 156 authnone_destroy(AUTH *client) 157 { 158 } 159 160 static struct auth_ops * 161 authnone_ops(void) 162 { 163 static struct auth_ops ops; 164 165 /* VARIABLES PROTECTED BY ops_lock: ops */ 166 167 mutex_lock(&ops_lock); 168 if (ops.ah_nextverf == NULL) { 169 ops.ah_nextverf = authnone_verf; 170 ops.ah_marshal = authnone_marshal; 171 ops.ah_validate = authnone_validate; 172 ops.ah_refresh = authnone_refresh; 173 ops.ah_destroy = authnone_destroy; 174 } 175 mutex_unlock(&ops_lock); 176 return (&ops); 177 } 178