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