1 /*- 2 * Copyright (c) 2009, Sun Microsystems, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * - Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * - Redistributions in binary form must reproduce the above copyright notice, 10 * this list of conditions and the following disclaimer in the documentation 11 * and/or other materials provided with the distribution. 12 * - Neither the name of Sun Microsystems, Inc. nor the names of its 13 * contributors may be used to endorse or promote products derived 14 * from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 * 28 * @(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro 29 * @(#)rpc_callmsg.c 2.1 88/07/29 4.0 RPCSRC 30 * $NetBSD: rpc_callmsg.c,v 1.16 2000/07/14 08:40:42 fvdl Exp $ 31 * $FreeBSD: src/lib/libc/rpc/rpc_callmsg.c,v 1.13 2007/11/20 01:51:20 jb Exp $ 32 */ 33 34 /* 35 * rpc_callmsg.c 36 * 37 * Copyright (C) 1984, Sun Microsystems, Inc. 38 * 39 */ 40 41 #include "namespace.h" 42 #include <assert.h> 43 #include <stdlib.h> 44 #include <string.h> 45 46 #include <rpc/rpc.h> 47 #include "un-namespace.h" 48 49 /* 50 * XDR a call message 51 */ 52 bool_t 53 xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg) 54 { 55 enum msg_type *prm_direction; 56 int32_t *buf; 57 struct opaque_auth *oa; 58 59 assert(xdrs != NULL); 60 assert(cmsg != NULL); 61 62 if (xdrs->x_op == XDR_ENCODE) { 63 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) { 64 return (FALSE); 65 } 66 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) { 67 return (FALSE); 68 } 69 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT 70 + RNDUP(cmsg->rm_call.cb_cred.oa_length) 71 + 2 * BYTES_PER_XDR_UNIT 72 + RNDUP(cmsg->rm_call.cb_verf.oa_length)); 73 if (buf != NULL) { 74 IXDR_PUT_INT32(buf, cmsg->rm_xid); 75 IXDR_PUT_ENUM(buf, cmsg->rm_direction); 76 if (cmsg->rm_direction != CALL) { 77 return (FALSE); 78 } 79 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers); 80 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 81 return (FALSE); 82 } 83 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog); 84 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers); 85 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc); 86 oa = &cmsg->rm_call.cb_cred; 87 IXDR_PUT_ENUM(buf, oa->oa_flavor); 88 IXDR_PUT_INT32(buf, oa->oa_length); 89 if (oa->oa_length) { 90 memmove(buf, oa->oa_base, oa->oa_length); 91 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 92 } 93 oa = &cmsg->rm_call.cb_verf; 94 IXDR_PUT_ENUM(buf, oa->oa_flavor); 95 IXDR_PUT_INT32(buf, oa->oa_length); 96 if (oa->oa_length) { 97 memmove(buf, oa->oa_base, oa->oa_length); 98 /* no real need.... 99 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 100 */ 101 } 102 return (TRUE); 103 } 104 } 105 if (xdrs->x_op == XDR_DECODE) { 106 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT); 107 if (buf != NULL) { 108 cmsg->rm_xid = IXDR_GET_U_INT32(buf); 109 cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type); 110 if (cmsg->rm_direction != CALL) { 111 return (FALSE); 112 } 113 cmsg->rm_call.cb_rpcvers = IXDR_GET_U_INT32(buf); 114 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 115 return (FALSE); 116 } 117 cmsg->rm_call.cb_prog = IXDR_GET_U_INT32(buf); 118 cmsg->rm_call.cb_vers = IXDR_GET_U_INT32(buf); 119 cmsg->rm_call.cb_proc = IXDR_GET_U_INT32(buf); 120 oa = &cmsg->rm_call.cb_cred; 121 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 122 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf); 123 if (oa->oa_length) { 124 if (oa->oa_length > MAX_AUTH_BYTES) { 125 return (FALSE); 126 } 127 if (oa->oa_base == NULL) { 128 oa->oa_base = (caddr_t) 129 mem_alloc(oa->oa_length); 130 if (oa->oa_base == NULL) 131 return (FALSE); 132 } 133 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 134 if (buf == NULL) { 135 if (xdr_opaque(xdrs, oa->oa_base, 136 oa->oa_length) == FALSE) { 137 return (FALSE); 138 } 139 } else { 140 memmove(oa->oa_base, buf, 141 oa->oa_length); 142 /* no real need.... 143 buf += RNDUP(oa->oa_length) / 144 sizeof (int32_t); 145 */ 146 } 147 } 148 oa = &cmsg->rm_call.cb_verf; 149 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT); 150 if (buf == NULL) { 151 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE || 152 xdr_u_int(xdrs, &oa->oa_length) == FALSE) { 153 return (FALSE); 154 } 155 } else { 156 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 157 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf); 158 } 159 if (oa->oa_length) { 160 if (oa->oa_length > MAX_AUTH_BYTES) { 161 return (FALSE); 162 } 163 if (oa->oa_base == NULL) { 164 oa->oa_base = (caddr_t) 165 mem_alloc(oa->oa_length); 166 if (oa->oa_base == NULL) 167 return (FALSE); 168 } 169 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 170 if (buf == NULL) { 171 if (xdr_opaque(xdrs, oa->oa_base, 172 oa->oa_length) == FALSE) { 173 return (FALSE); 174 } 175 } else { 176 memmove(oa->oa_base, buf, 177 oa->oa_length); 178 /* no real need... 179 buf += RNDUP(oa->oa_length) / 180 sizeof (int32_t); 181 */ 182 } 183 } 184 return (TRUE); 185 } 186 } 187 prm_direction = &cmsg->rm_direction; 188 if ( 189 xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) && 190 xdr_enum(xdrs, (enum_t *) prm_direction) && 191 (cmsg->rm_direction == CALL) && 192 xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_rpcvers)) && 193 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) && 194 xdr_rpcprog(xdrs, &(cmsg->rm_call.cb_prog)) && 195 xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_vers)) && 196 xdr_rpcproc(xdrs, &(cmsg->rm_call.cb_proc)) && 197 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) ) 198 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf))); 199 return (FALSE); 200 } 201