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