rpc_callmsg.c revision 330897
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#if defined(LIBC_SCCS) && !defined(lint) 34static char *sccsid2 = "@(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro"; 35static char *sccsid = "@(#)rpc_callmsg.c 2.1 88/07/29 4.0 RPCSRC"; 36#endif 37#include <sys/cdefs.h> 38__FBSDID("$FreeBSD: stable/11/lib/libc/rpc/rpc_callmsg.c 330897 2018-03-14 03:19:51Z eadler $"); 39 40/* 41 * rpc_callmsg.c 42 * 43 * Copyright (C) 1984, Sun Microsystems, Inc. 44 * 45 */ 46 47#include "namespace.h" 48#include <assert.h> 49#include <stdlib.h> 50#include <string.h> 51 52#include <rpc/rpc.h> 53#include "un-namespace.h" 54 55/* 56 * XDR a call message 57 */ 58bool_t 59xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg) 60{ 61 enum msg_type *prm_direction; 62 int32_t *buf; 63 struct opaque_auth *oa; 64 65 assert(xdrs != NULL); 66 assert(cmsg != NULL); 67 68 if (xdrs->x_op == XDR_ENCODE) { 69 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) { 70 return (FALSE); 71 } 72 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) { 73 return (FALSE); 74 } 75 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT 76 + RNDUP(cmsg->rm_call.cb_cred.oa_length) 77 + 2 * BYTES_PER_XDR_UNIT 78 + RNDUP(cmsg->rm_call.cb_verf.oa_length)); 79 if (buf != NULL) { 80 IXDR_PUT_INT32(buf, cmsg->rm_xid); 81 IXDR_PUT_ENUM(buf, cmsg->rm_direction); 82 if (cmsg->rm_direction != CALL) { 83 return (FALSE); 84 } 85 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers); 86 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 87 return (FALSE); 88 } 89 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog); 90 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers); 91 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc); 92 oa = &cmsg->rm_call.cb_cred; 93 IXDR_PUT_ENUM(buf, oa->oa_flavor); 94 IXDR_PUT_INT32(buf, oa->oa_length); 95 if (oa->oa_length) { 96 memmove(buf, oa->oa_base, oa->oa_length); 97 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 98 } 99 oa = &cmsg->rm_call.cb_verf; 100 IXDR_PUT_ENUM(buf, oa->oa_flavor); 101 IXDR_PUT_INT32(buf, oa->oa_length); 102 if (oa->oa_length) { 103 memmove(buf, oa->oa_base, oa->oa_length); 104 /* no real need.... 105 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 106 */ 107 } 108 return (TRUE); 109 } 110 } 111 if (xdrs->x_op == XDR_DECODE) { 112 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT); 113 if (buf != NULL) { 114 cmsg->rm_xid = IXDR_GET_U_INT32(buf); 115 cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type); 116 if (cmsg->rm_direction != CALL) { 117 return (FALSE); 118 } 119 cmsg->rm_call.cb_rpcvers = IXDR_GET_U_INT32(buf); 120 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 121 return (FALSE); 122 } 123 cmsg->rm_call.cb_prog = IXDR_GET_U_INT32(buf); 124 cmsg->rm_call.cb_vers = IXDR_GET_U_INT32(buf); 125 cmsg->rm_call.cb_proc = IXDR_GET_U_INT32(buf); 126 oa = &cmsg->rm_call.cb_cred; 127 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 128 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf); 129 if (oa->oa_length) { 130 if (oa->oa_length > MAX_AUTH_BYTES) { 131 return (FALSE); 132 } 133 if (oa->oa_base == NULL) { 134 oa->oa_base = (caddr_t) 135 mem_alloc(oa->oa_length); 136 if (oa->oa_base == NULL) 137 return (FALSE); 138 } 139 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 140 if (buf == NULL) { 141 if (xdr_opaque(xdrs, oa->oa_base, 142 oa->oa_length) == FALSE) { 143 return (FALSE); 144 } 145 } else { 146 memmove(oa->oa_base, buf, 147 oa->oa_length); 148 /* no real need.... 149 buf += RNDUP(oa->oa_length) / 150 sizeof (int32_t); 151 */ 152 } 153 } 154 oa = &cmsg->rm_call.cb_verf; 155 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT); 156 if (buf == NULL) { 157 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE || 158 xdr_u_int(xdrs, &oa->oa_length) == FALSE) { 159 return (FALSE); 160 } 161 } else { 162 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 163 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf); 164 } 165 if (oa->oa_length) { 166 if (oa->oa_length > MAX_AUTH_BYTES) { 167 return (FALSE); 168 } 169 if (oa->oa_base == NULL) { 170 oa->oa_base = (caddr_t) 171 mem_alloc(oa->oa_length); 172 if (oa->oa_base == NULL) 173 return (FALSE); 174 } 175 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 176 if (buf == NULL) { 177 if (xdr_opaque(xdrs, oa->oa_base, 178 oa->oa_length) == FALSE) { 179 return (FALSE); 180 } 181 } else { 182 memmove(oa->oa_base, buf, 183 oa->oa_length); 184 /* no real need... 185 buf += RNDUP(oa->oa_length) / 186 sizeof (int32_t); 187 */ 188 } 189 } 190 return (TRUE); 191 } 192 } 193 prm_direction = &cmsg->rm_direction; 194 if ( 195 xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) && 196 xdr_enum(xdrs, (enum_t *) prm_direction) && 197 (cmsg->rm_direction == CALL) && 198 xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_rpcvers)) && 199 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) && 200 xdr_rpcprog(xdrs, &(cmsg->rm_call.cb_prog)) && 201 xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_vers)) && 202 xdr_rpcproc(xdrs, &(cmsg->rm_call.cb_proc)) && 203 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) ) 204 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf))); 205 return (FALSE); 206} 207