rpc_callmsg.c revision 261046
1/* $NetBSD: rpc_callmsg.c,v 1.16 2000/07/14 08:40:42 fvdl 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) 32static char *sccsid2 = "@(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro"; 33static char *sccsid = "@(#)rpc_callmsg.c 2.1 88/07/29 4.0 RPCSRC"; 34#endif 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD: stable/10/sys/rpc/rpc_callmsg.c 261046 2014-01-22 23:45:27Z mav $"); 37 38/* 39 * rpc_callmsg.c 40 * 41 * Copyright (C) 1984, Sun Microsystems, Inc. 42 * 43 */ 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/malloc.h> 48 49#include <rpc/rpc.h> 50 51/* 52 * XDR a call message 53 */ 54bool_t 55xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg) 56{ 57 enum msg_type *prm_direction; 58 int32_t *buf; 59 struct opaque_auth *oa; 60 61 if (xdrs->x_op == XDR_ENCODE) { 62 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) { 63 return (FALSE); 64 } 65 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) { 66 return (FALSE); 67 } 68 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT 69 + RNDUP(cmsg->rm_call.cb_cred.oa_length) 70 + 2 * BYTES_PER_XDR_UNIT 71 + RNDUP(cmsg->rm_call.cb_verf.oa_length)); 72 if (buf != NULL) { 73 IXDR_PUT_INT32(buf, cmsg->rm_xid); 74 IXDR_PUT_ENUM(buf, cmsg->rm_direction); 75 if (cmsg->rm_direction != CALL) { 76 return (FALSE); 77 } 78 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers); 79 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 80 return (FALSE); 81 } 82 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog); 83 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers); 84 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc); 85 oa = &cmsg->rm_call.cb_cred; 86 IXDR_PUT_ENUM(buf, oa->oa_flavor); 87 IXDR_PUT_INT32(buf, oa->oa_length); 88 if (oa->oa_length) { 89 memcpy(buf, oa->oa_base, oa->oa_length); 90 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 91 } 92 oa = &cmsg->rm_call.cb_verf; 93 IXDR_PUT_ENUM(buf, oa->oa_flavor); 94 IXDR_PUT_INT32(buf, oa->oa_length); 95 if (oa->oa_length) { 96 memcpy(buf, oa->oa_base, oa->oa_length); 97 /* no real need.... 98 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 99 */ 100 } 101 return (TRUE); 102 } 103 } 104 if (xdrs->x_op == XDR_DECODE) { 105 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT); 106 if (buf != NULL) { 107 cmsg->rm_xid = IXDR_GET_UINT32(buf); 108 cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type); 109 if (cmsg->rm_direction != CALL) { 110 return (FALSE); 111 } 112 cmsg->rm_call.cb_rpcvers = IXDR_GET_UINT32(buf); 113 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 114 return (FALSE); 115 } 116 cmsg->rm_call.cb_prog = IXDR_GET_UINT32(buf); 117 cmsg->rm_call.cb_vers = IXDR_GET_UINT32(buf); 118 cmsg->rm_call.cb_proc = IXDR_GET_UINT32(buf); 119 oa = &cmsg->rm_call.cb_cred; 120 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 121 oa->oa_length = (u_int)IXDR_GET_UINT32(buf); 122 if (oa->oa_length) { 123 if (oa->oa_length > MAX_AUTH_BYTES) { 124 return (FALSE); 125 } 126 if (oa->oa_base == NULL) { 127 oa->oa_base = (caddr_t) 128 mem_alloc(oa->oa_length); 129 if (oa->oa_base == NULL) 130 return (FALSE); 131 } 132 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 133 if (buf == NULL) { 134 if (xdr_opaque(xdrs, oa->oa_base, 135 oa->oa_length) == FALSE) { 136 return (FALSE); 137 } 138 } else { 139 memcpy(oa->oa_base, buf, 140 oa->oa_length); 141 /* no real need.... 142 buf += RNDUP(oa->oa_length) / 143 sizeof (int32_t); 144 */ 145 } 146 } 147 oa = &cmsg->rm_call.cb_verf; 148 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT); 149 if (buf == NULL) { 150 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE || 151 xdr_u_int(xdrs, &oa->oa_length) == FALSE) { 152 return (FALSE); 153 } 154 } else { 155 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 156 oa->oa_length = (u_int)IXDR_GET_UINT32(buf); 157 } 158 if (oa->oa_length) { 159 if (oa->oa_length > MAX_AUTH_BYTES) { 160 return (FALSE); 161 } 162 if (oa->oa_base == NULL) { 163 oa->oa_base = (caddr_t) 164 mem_alloc(oa->oa_length); 165 if (oa->oa_base == NULL) 166 return (FALSE); 167 } 168 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 169 if (buf == NULL) { 170 if (xdr_opaque(xdrs, oa->oa_base, 171 oa->oa_length) == FALSE) { 172 return (FALSE); 173 } 174 } else { 175 memcpy(oa->oa_base, buf, 176 oa->oa_length); 177 /* no real need... 178 buf += RNDUP(oa->oa_length) / 179 sizeof (int32_t); 180 */ 181 } 182 } 183 return (TRUE); 184 } 185 } 186 prm_direction = &cmsg->rm_direction; 187 if ( 188 xdr_uint32_t(xdrs, &(cmsg->rm_xid)) && 189 xdr_enum(xdrs, (enum_t *) prm_direction) && 190 (cmsg->rm_direction == CALL) && 191 xdr_uint32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) && 192 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) && 193 xdr_uint32_t(xdrs, &(cmsg->rm_call.cb_prog)) && 194 xdr_uint32_t(xdrs, &(cmsg->rm_call.cb_vers)) && 195 xdr_uint32_t(xdrs, &(cmsg->rm_call.cb_proc)) && 196 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) ) 197 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf))); 198 return (FALSE); 199} 200