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 /* 38 * auth_none.c 39 * Creates a client authentication handle for passing "null" 40 * credentials and verifiers to remote systems. 41 * 42 * Copyright (C) 1984, Sun Microsystems, Inc. 43 */ 44 45 #include "namespace.h" 46 #include "reentrant.h" 47 #include <assert.h> 48 #include <stdlib.h> 49 #include <rpc/types.h> 50 #include <rpc/xdr.h> 51 #include <rpc/auth.h> 52 #include "un-namespace.h" 53 #include "mt_misc.h" 54 55 #define MAX_MARSHAL_SIZE 20 56 57 /* 58 * Authenticator operations routines 59 */ 60 61 static bool_t authnone_marshal (AUTH *, XDR *); 62 static void authnone_verf (AUTH *); 63 static bool_t authnone_validate (AUTH *, struct opaque_auth *); 64 static bool_t authnone_refresh (AUTH *, void *); 65 static void authnone_destroy (AUTH *); 66 67 extern bool_t xdr_opaque_auth(XDR *, struct opaque_auth *); 68 69 static struct auth_ops *authnone_ops(void); 70 71 static struct authnone_private { 72 AUTH no_client; 73 char marshalled_client[MAX_MARSHAL_SIZE]; 74 u_int mcnt; 75 } *authnone_private; 76 77 AUTH * 78 authnone_create(void) 79 { 80 struct authnone_private *ap = authnone_private; 81 XDR xdr_stream; 82 XDR *xdrs; 83 84 mutex_lock(&authnone_lock); 85 if (ap == NULL) { 86 ap = calloc(1, sizeof (*ap)); 87 if (ap == NULL) { 88 mutex_unlock(&authnone_lock); 89 return (0); 90 } 91 authnone_private = ap; 92 } 93 if (!ap->mcnt) { 94 ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth; 95 ap->no_client.ah_ops = authnone_ops(); 96 xdrs = &xdr_stream; 97 xdrmem_create(xdrs, ap->marshalled_client, 98 (u_int)MAX_MARSHAL_SIZE, XDR_ENCODE); 99 (void)xdr_opaque_auth(xdrs, &ap->no_client.ah_cred); 100 (void)xdr_opaque_auth(xdrs, &ap->no_client.ah_verf); 101 ap->mcnt = XDR_GETPOS(xdrs); 102 XDR_DESTROY(xdrs); 103 } 104 mutex_unlock(&authnone_lock); 105 return (&ap->no_client); 106 } 107 108 /*ARGSUSED*/ 109 static bool_t 110 authnone_marshal(AUTH *client, XDR *xdrs) 111 { 112 struct authnone_private *ap; 113 bool_t dummy; 114 115 assert(xdrs != NULL); 116 117 ap = authnone_private; 118 if (ap == NULL) { 119 mutex_unlock(&authnone_lock); 120 return (FALSE); 121 } 122 dummy = (*xdrs->x_ops->x_putbytes)(xdrs, 123 ap->marshalled_client, ap->mcnt); 124 mutex_unlock(&authnone_lock); 125 return (dummy); 126 } 127 128 /* All these unused parameters are required to keep ANSI-C from grumbling */ 129 /*ARGSUSED*/ 130 static void 131 authnone_verf(AUTH *client) 132 { 133 } 134 135 /*ARGSUSED*/ 136 static bool_t 137 authnone_validate(AUTH *client, struct opaque_auth *opaque) 138 { 139 140 return (TRUE); 141 } 142 143 /*ARGSUSED*/ 144 static bool_t 145 authnone_refresh(AUTH *client, void *dummy) 146 { 147 148 return (FALSE); 149 } 150 151 /*ARGSUSED*/ 152 static void 153 authnone_destroy(AUTH *client) 154 { 155 } 156 157 static struct auth_ops * 158 authnone_ops(void) 159 { 160 static struct auth_ops ops; 161 162 /* VARIABLES PROTECTED BY ops_lock: ops */ 163 164 mutex_lock(&ops_lock); 165 if (ops.ah_nextverf == NULL) { 166 ops.ah_nextverf = authnone_verf; 167 ops.ah_marshal = authnone_marshal; 168 ops.ah_validate = authnone_validate; 169 ops.ah_refresh = authnone_refresh; 170 ops.ah_destroy = authnone_destroy; 171 } 172 mutex_unlock(&ops_lock); 173 return (&ops); 174 } 175