1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user. 8 * 9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 12 * 13 * Sun RPC is provided with no support and without any obligation on the 14 * part of Sun Microsystems, Inc. to assist in its use, correction, 15 * modification or enhancement. 16 * 17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 19 * OR ANY PART THEREOF. 20 * 21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 22 * or profits or other special, indirect and consequential damages, even if 23 * Sun has been advised of the possibility of such damages. 24 * 25 * Sun Microsystems, Inc. 26 * 2550 Garcia Avenue 27 * Mountain View, California 94043 28 * 29 * @(#)auth_none.c 1.19 87/08/11 Copyr 1984 Sun Micro 30 * @(#)auth_none.c 2.1 88/07/29 4.0 RPCSRC 31 * $NetBSD: auth_none.c,v 1.13 2000/01/22 22:19:17 mycroft Exp $ 32 * $FreeBSD: src/lib/libc/rpc/auth_none.c,v 1.14 2006/02/27 22:10:58 deischen Exp $ 33 */ 34 35 /* 36 * auth_none.c 37 * Creates a client authentication handle for passing "null" 38 * credentials and verifiers to remote systems. 39 * 40 * Copyright (C) 1984, Sun Microsystems, Inc. 41 */ 42 43 #include "namespace.h" 44 #include "reentrant.h" 45 #include <assert.h> 46 #include <stdlib.h> 47 #include <rpc/types.h> 48 #include <rpc/xdr.h> 49 #include <rpc/auth.h> 50 #include "un-namespace.h" 51 #include "mt_misc.h" 52 53 #define MAX_MARSHAL_SIZE 20 54 55 /* 56 * Authenticator operations routines 57 */ 58 59 static bool_t authnone_marshal(AUTH *, XDR *); 60 static void authnone_verf(AUTH *); 61 static bool_t authnone_validate(AUTH *, struct opaque_auth *); 62 static bool_t authnone_refresh(AUTH *, void *); 63 static void authnone_destroy(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 = (struct authnone_private *)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 xdr_opaque_auth(xdrs, &ap->no_client.ah_cred); 96 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 __unused, 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 __unused) 128 { 129 } 130 131 /*ARGSUSED*/ 132 static bool_t 133 authnone_validate(AUTH *client __unused, struct opaque_auth *opaque __unused) 134 { 135 136 return (TRUE); 137 } 138 139 /*ARGSUSED*/ 140 static bool_t 141 authnone_refresh(AUTH *client __unused, void *dummy __unused) 142 { 143 144 return (FALSE); 145 } 146 147 /*ARGSUSED*/ 148 static void 149 authnone_destroy(AUTH *client __unused) 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