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