1 /* $OpenBSD: auth_none.c,v 1.11 2010/09/01 14:43:34 millert Exp $ */ 2 3 /* 4 * Copyright (c) 2010, Oracle America, Inc. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * * Redistributions in binary form must reproduce the above 13 * copyright notice, this list of conditions and the following 14 * disclaimer in the documentation and/or other materials 15 * provided with the distribution. 16 * * Neither the name of the "Oracle America, 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 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 27 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * auth_none.c 36 * Creates a client authentication handle for passing "null" 37 * credentials and verifiers to remote systems. 38 */ 39 40 #include <stdlib.h> 41 #include <rpc/types.h> 42 #include <rpc/rpc.h> 43 #include <rpc/xdr.h> 44 #include <rpc/auth.h> 45 #define MAX_MARSHEL_SIZE 20 46 47 /* 48 * Authenticator operations routines 49 */ 50 static void authnone_destroy(struct __rpc_auth *); 51 static void authnone_verf(struct __rpc_auth *); 52 static bool_t authnone_validate(struct __rpc_auth *, struct opaque_auth *); 53 static bool_t authnone_marshal(struct __rpc_auth *, XDR *); 54 static bool_t authnone_refresh(struct __rpc_auth *); 55 56 static struct auth_ops ops = { 57 authnone_verf, 58 authnone_marshal, 59 authnone_validate, 60 authnone_refresh, 61 authnone_destroy 62 }; 63 64 static struct authnone_private { 65 AUTH no_client; 66 char marshalled_client[MAX_MARSHEL_SIZE]; 67 u_int mcnt; 68 } *authnone_private; 69 70 AUTH * 71 authnone_create(void) 72 { 73 struct authnone_private *ap = authnone_private; 74 XDR xdr_stream; 75 XDR *xdrs; 76 77 if (ap == NULL) { 78 ap = (struct authnone_private *)calloc(1, sizeof (*ap)); 79 if (ap == NULL) 80 return (NULL); 81 authnone_private = ap; 82 } 83 if (!ap->mcnt) { 84 ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth; 85 ap->no_client.ah_ops = &ops; 86 xdrs = &xdr_stream; 87 xdrmem_create(xdrs, ap->marshalled_client, (u_int)MAX_MARSHEL_SIZE, 88 XDR_ENCODE); 89 (void)xdr_opaque_auth(xdrs, &ap->no_client.ah_cred); 90 (void)xdr_opaque_auth(xdrs, &ap->no_client.ah_verf); 91 ap->mcnt = XDR_GETPOS(xdrs); 92 XDR_DESTROY(xdrs); 93 } 94 return (&ap->no_client); 95 } 96 97 /*ARGSUSED*/ 98 static bool_t 99 authnone_marshal(AUTH *client, XDR *xdrs) 100 { 101 struct authnone_private *ap = authnone_private; 102 103 if (ap == NULL) 104 return (0); 105 return ((*xdrs->x_ops->x_putbytes)(xdrs, 106 ap->marshalled_client, ap->mcnt)); 107 } 108 109 /*ARGSUSED*/ 110 static void 111 authnone_verf(struct __rpc_auth *none) 112 { 113 } 114 115 /*ARGSUSED*/ 116 static bool_t 117 authnone_validate(struct __rpc_auth *none, struct opaque_auth *noauth) 118 { 119 120 return (TRUE); 121 } 122 123 /*ARGSUSED*/ 124 static bool_t 125 authnone_refresh(struct __rpc_auth *none) 126 { 127 128 return (FALSE); 129 } 130 131 /*ARGSUSED*/ 132 static void 133 authnone_destroy(struct __rpc_auth *none) 134 { 135 } 136