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 /*
34 * rpc_callmsg.c
35 *
36 * Copyright (C) 1984, Sun Microsystems, Inc.
37 *
38 */
39
40 #include "namespace.h"
41 #include <assert.h>
42 #include <stdlib.h>
43 #include <string.h>
44
45 #include <rpc/rpc.h>
46 #include "un-namespace.h"
47
48 /*
49 * XDR a call message
50 */
51 bool_t
xdr_callmsg(XDR * xdrs,struct rpc_msg * cmsg)52 xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg)
53 {
54 enum msg_type *prm_direction;
55 int32_t *buf;
56 struct opaque_auth *oa;
57
58 assert(xdrs != NULL);
59 assert(cmsg != NULL);
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 memmove(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 memmove(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_U_INT32(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_U_INT32(buf);
113 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
114 return (FALSE);
115 }
116 cmsg->rm_call.cb_prog = IXDR_GET_U_INT32(buf);
117 cmsg->rm_call.cb_vers = IXDR_GET_U_INT32(buf);
118 cmsg->rm_call.cb_proc = IXDR_GET_U_INT32(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_U_INT32(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 memmove(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_U_INT32(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 memmove(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_u_int32_t(xdrs, &(cmsg->rm_xid)) &&
189 xdr_enum(xdrs, (enum_t *) prm_direction) &&
190 (cmsg->rm_direction == CALL) &&
191 xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
192 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
193 xdr_rpcprog(xdrs, &(cmsg->rm_call.cb_prog)) &&
194 xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_vers)) &&
195 xdr_rpcproc(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