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 /* 34 * auth_none.c 35 * Creates a client authentication handle for passing "null" 36 * credentials and verifiers to remote systems. 37 * 38 * Copyright (C) 1984, Sun Microsystems, Inc. 39 */ 40 41 #include "namespace.h" 42 #include "reentrant.h" 43 #include <assert.h> 44 #include <stdlib.h> 45 #include <rpc/types.h> 46 #include <rpc/xdr.h> 47 #include <rpc/auth.h> 48 #include "un-namespace.h" 49 #include "mt_misc.h" 50 51 #define MAX_MARSHAL_SIZE 20 52 53 /* 54 * Authenticator operations routines 55 */ 56 57 static bool_t authnone_marshal (AUTH *, XDR *); 58 static void authnone_verf (AUTH *); 59 static bool_t authnone_validate (AUTH *, struct opaque_auth *); 60 static bool_t authnone_refresh (AUTH *, void *); 61 static void authnone_destroy (AUTH *); 62 63 extern bool_t xdr_opaque_auth(XDR *, struct opaque_auth *); 64 65 static struct auth_ops *authnone_ops(void); 66 67 static struct authnone_private { 68 AUTH no_client; 69 char marshalled_client[MAX_MARSHAL_SIZE]; 70 u_int mcnt; 71 } *authnone_private; 72 73 AUTH * 74 authnone_create(void) 75 { 76 struct authnone_private *ap = authnone_private; 77 XDR xdr_stream; 78 XDR *xdrs; 79 80 mutex_lock(&authnone_lock); 81 if (ap == NULL) { 82 ap = calloc(1, sizeof (*ap)); 83 if (ap == NULL) { 84 mutex_unlock(&authnone_lock); 85 return (0); 86 } 87 authnone_private = ap; 88 } 89 if (!ap->mcnt) { 90 ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth; 91 ap->no_client.ah_ops = authnone_ops(); 92 xdrs = &xdr_stream; 93 xdrmem_create(xdrs, ap->marshalled_client, 94 (u_int)MAX_MARSHAL_SIZE, XDR_ENCODE); 95 (void)xdr_opaque_auth(xdrs, &ap->no_client.ah_cred); 96 (void)xdr_opaque_auth(xdrs, &ap->no_client.ah_verf); 97 ap->mcnt = XDR_GETPOS(xdrs); 98 XDR_DESTROY(xdrs); 99 } 100 mutex_unlock(&authnone_lock); 101 return (&ap->no_client); 102 } 103 104 /*ARGSUSED*/ 105 static bool_t 106 authnone_marshal(AUTH *client, XDR *xdrs) 107 { 108 struct authnone_private *ap; 109 bool_t dummy; 110 111 assert(xdrs != NULL); 112 113 ap = authnone_private; 114 if (ap == NULL) { 115 mutex_unlock(&authnone_lock); 116 return (FALSE); 117 } 118 dummy = (*xdrs->x_ops->x_putbytes)(xdrs, 119 ap->marshalled_client, ap->mcnt); 120 mutex_unlock(&authnone_lock); 121 return (dummy); 122 } 123 124 /* All these unused parameters are required to keep ANSI-C from grumbling */ 125 /*ARGSUSED*/ 126 static void 127 authnone_verf(AUTH *client) 128 { 129 } 130 131 /*ARGSUSED*/ 132 static bool_t 133 authnone_validate(AUTH *client, struct opaque_auth *opaque) 134 { 135 136 return (TRUE); 137 } 138 139 /*ARGSUSED*/ 140 static bool_t 141 authnone_refresh(AUTH *client, void *dummy) 142 { 143 144 return (FALSE); 145 } 146 147 /*ARGSUSED*/ 148 static void 149 authnone_destroy(AUTH *client) 150 { 151 } 152 153 static struct auth_ops * 154 authnone_ops(void) 155 { 156 static struct auth_ops ops; 157 158 /* VARIABLES PROTECTED BY ops_lock: ops */ 159 160 mutex_lock(&ops_lock); 161 if (ops.ah_nextverf == NULL) { 162 ops.ah_nextverf = authnone_verf; 163 ops.ah_marshal = authnone_marshal; 164 ops.ah_validate = authnone_validate; 165 ops.ah_refresh = authnone_refresh; 166 ops.ah_destroy = authnone_destroy; 167 } 168 mutex_unlock(&ops_lock); 169 return (&ops); 170 } 171