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
xdr_callmsg(XDR * xdrs,struct rpc_msg * cmsg)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