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)
34 static char *sccsid2 = "@(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro";
35 static char *sccsid = "@(#)rpc_callmsg.c 2.1 88/07/29 4.0 RPCSRC";
36 #endif
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
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 */
58 bool_t
xdr_callmsg(XDR * xdrs,struct rpc_msg * cmsg)59 xdr_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