1/* $NetBSD: rpc_callmsg.c,v 1.16 2000/07/14 08:40:42 fvdl 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#include <sys/cdefs.h> 34/* 35 * rpc_callmsg.c 36 * 37 * Copyright (C) 1984, Sun Microsystems, Inc. 38 * 39 */ 40 41#include <sys/param.h> 42#include <sys/systm.h> 43#include <sys/malloc.h> 44 45#include <rpc/rpc.h> 46 47/* 48 * XDR a call message 49 */ 50bool_t 51xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg) 52{ 53 enum msg_type *prm_direction; 54 int32_t *buf; 55 struct opaque_auth *oa; 56 57 if (xdrs->x_op == XDR_ENCODE) { 58 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) { 59 return (FALSE); 60 } 61 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) { 62 return (FALSE); 63 } 64 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT 65 + RNDUP(cmsg->rm_call.cb_cred.oa_length) 66 + 2 * BYTES_PER_XDR_UNIT 67 + RNDUP(cmsg->rm_call.cb_verf.oa_length)); 68 if (buf != NULL) { 69 IXDR_PUT_INT32(buf, cmsg->rm_xid); 70 IXDR_PUT_ENUM(buf, cmsg->rm_direction); 71 if (cmsg->rm_direction != CALL) { 72 return (FALSE); 73 } 74 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers); 75 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 76 return (FALSE); 77 } 78 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog); 79 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers); 80 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc); 81 oa = &cmsg->rm_call.cb_cred; 82 IXDR_PUT_ENUM(buf, oa->oa_flavor); 83 IXDR_PUT_INT32(buf, oa->oa_length); 84 if (oa->oa_length) { 85 memcpy(buf, oa->oa_base, oa->oa_length); 86 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 87 } 88 oa = &cmsg->rm_call.cb_verf; 89 IXDR_PUT_ENUM(buf, oa->oa_flavor); 90 IXDR_PUT_INT32(buf, oa->oa_length); 91 if (oa->oa_length) { 92 memcpy(buf, oa->oa_base, oa->oa_length); 93 /* no real need.... 94 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 95 */ 96 } 97 return (TRUE); 98 } 99 } 100 if (xdrs->x_op == XDR_DECODE) { 101 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT); 102 if (buf != NULL) { 103 cmsg->rm_xid = IXDR_GET_UINT32(buf); 104 cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type); 105 if (cmsg->rm_direction != CALL) { 106 return (FALSE); 107 } 108 cmsg->rm_call.cb_rpcvers = IXDR_GET_UINT32(buf); 109 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 110 return (FALSE); 111 } 112 cmsg->rm_call.cb_prog = IXDR_GET_UINT32(buf); 113 cmsg->rm_call.cb_vers = IXDR_GET_UINT32(buf); 114 cmsg->rm_call.cb_proc = IXDR_GET_UINT32(buf); 115 oa = &cmsg->rm_call.cb_cred; 116 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 117 oa->oa_length = (u_int)IXDR_GET_UINT32(buf); 118 if (oa->oa_length) { 119 if (oa->oa_length > MAX_AUTH_BYTES) { 120 return (FALSE); 121 } 122 if (oa->oa_base == NULL) { 123 oa->oa_base = (caddr_t) 124 mem_alloc(oa->oa_length); 125 if (oa->oa_base == NULL) 126 return (FALSE); 127 } 128 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 129 if (buf == NULL) { 130 if (xdr_opaque(xdrs, oa->oa_base, 131 oa->oa_length) == FALSE) { 132 return (FALSE); 133 } 134 } else { 135 memcpy(oa->oa_base, buf, 136 oa->oa_length); 137 /* no real need.... 138 buf += RNDUP(oa->oa_length) / 139 sizeof (int32_t); 140 */ 141 } 142 } 143 oa = &cmsg->rm_call.cb_verf; 144 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT); 145 if (buf == NULL) { 146 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE || 147 xdr_u_int(xdrs, &oa->oa_length) == FALSE) { 148 return (FALSE); 149 } 150 } else { 151 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 152 oa->oa_length = (u_int)IXDR_GET_UINT32(buf); 153 } 154 if (oa->oa_length) { 155 if (oa->oa_length > MAX_AUTH_BYTES) { 156 return (FALSE); 157 } 158 if (oa->oa_base == NULL) { 159 oa->oa_base = (caddr_t) 160 mem_alloc(oa->oa_length); 161 if (oa->oa_base == NULL) 162 return (FALSE); 163 } 164 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 165 if (buf == NULL) { 166 if (xdr_opaque(xdrs, oa->oa_base, 167 oa->oa_length) == FALSE) { 168 return (FALSE); 169 } 170 } else { 171 memcpy(oa->oa_base, buf, 172 oa->oa_length); 173 /* no real need... 174 buf += RNDUP(oa->oa_length) / 175 sizeof (int32_t); 176 */ 177 } 178 } 179 return (TRUE); 180 } 181 } 182 prm_direction = &cmsg->rm_direction; 183 if ( 184 xdr_uint32_t(xdrs, &(cmsg->rm_xid)) && 185 xdr_enum(xdrs, (enum_t *) prm_direction) && 186 (cmsg->rm_direction == CALL) && 187 xdr_uint32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) && 188 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) && 189 xdr_uint32_t(xdrs, &(cmsg->rm_call.cb_prog)) && 190 xdr_uint32_t(xdrs, &(cmsg->rm_call.cb_vers)) && 191 xdr_uint32_t(xdrs, &(cmsg->rm_call.cb_proc)) && 192 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) ) 193 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf))); 194 return (FALSE); 195} 196