1 /* $NetBSD: rpc_callmsg.c,v 1.20 2013/03/11 20:19:29 tron Exp $ */
2
3 /*
4 * Copyright (c) 2010, Oracle America, Inc.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met:
9 *
10 * * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * * Redistributions in binary form must reproduce the above
13 * copyright notice, this list of conditions and the following
14 * disclaimer in the documentation and/or other materials
15 * provided with the distribution.
16 * * Neither the name of the "Oracle America, 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
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
27 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 #if defined(LIBC_SCCS) && !defined(lint)
36 #if 0
37 static char *sccsid = "@(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro";
38 static char *sccsid = "@(#)rpc_callmsg.c 2.1 88/07/29 4.0 RPCSRC";
39 #else
40 __RCSID("$NetBSD: rpc_callmsg.c,v 1.20 2013/03/11 20:19:29 tron Exp $");
41 #endif
42 #endif
43
44 /*
45 * rpc_callmsg.c
46 *
47 * Copyright (C) 1984, Sun Microsystems, Inc.
48 *
49 */
50
51 #include "namespace.h"
52
53 #include <sys/param.h>
54
55 #include <assert.h>
56 #include <stdlib.h>
57 #include <string.h>
58
59 #include <rpc/rpc.h>
60
61 #ifdef __weak_alias
__weak_alias(xdr_callmsg,_xdr_callmsg)62 __weak_alias(xdr_callmsg,_xdr_callmsg)
63 #endif
64
65 /*
66 * XDR a call message
67 */
68 bool_t
69 xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg)
70 {
71 int32_t *buf;
72 struct opaque_auth *oa;
73
74 _DIAGASSERT(xdrs != NULL);
75 _DIAGASSERT(cmsg != NULL);
76
77 if (xdrs->x_op == XDR_ENCODE) {
78 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) {
79 return (FALSE);
80 }
81 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) {
82 return (FALSE);
83 }
84 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
85 + RNDUP(cmsg->rm_call.cb_cred.oa_length)
86 + 2 * BYTES_PER_XDR_UNIT
87 + RNDUP(cmsg->rm_call.cb_verf.oa_length));
88 if (buf != NULL) {
89 IXDR_PUT_INT32(buf, cmsg->rm_xid);
90 IXDR_PUT_ENUM(buf, cmsg->rm_direction);
91 if (cmsg->rm_direction != CALL) {
92 return (FALSE);
93 }
94 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers);
95 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
96 return (FALSE);
97 }
98 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog);
99 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers);
100 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc);
101 oa = &cmsg->rm_call.cb_cred;
102 IXDR_PUT_ENUM(buf, oa->oa_flavor);
103 IXDR_PUT_INT32(buf, oa->oa_length);
104 if (oa->oa_length) {
105 memmove(buf, oa->oa_base, oa->oa_length);
106 buf += RNDUP(oa->oa_length) / sizeof (int32_t);
107 }
108 oa = &cmsg->rm_call.cb_verf;
109 IXDR_PUT_ENUM(buf, oa->oa_flavor);
110 IXDR_PUT_INT32(buf, oa->oa_length);
111 if (oa->oa_length) {
112 memmove(buf, oa->oa_base, oa->oa_length);
113 /* no real need....
114 buf += RNDUP(oa->oa_length) / sizeof (int32_t);
115 */
116 }
117 return (TRUE);
118 }
119 }
120 if (xdrs->x_op == XDR_DECODE) {
121 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
122 if (buf != NULL) {
123 cmsg->rm_xid = IXDR_GET_U_INT32(buf);
124 cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
125 if (cmsg->rm_direction != CALL) {
126 return (FALSE);
127 }
128 cmsg->rm_call.cb_rpcvers = IXDR_GET_U_INT32(buf);
129 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
130 return (FALSE);
131 }
132 cmsg->rm_call.cb_prog = IXDR_GET_U_INT32(buf);
133 cmsg->rm_call.cb_vers = IXDR_GET_U_INT32(buf);
134 cmsg->rm_call.cb_proc = IXDR_GET_U_INT32(buf);
135 oa = &cmsg->rm_call.cb_cred;
136 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
137 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf);
138 if (oa->oa_length) {
139 if (oa->oa_length > MAX_AUTH_BYTES) {
140 return (FALSE);
141 }
142 if (oa->oa_base == NULL) {
143 oa->oa_base = mem_alloc(oa->oa_length);
144 if (oa->oa_base == NULL)
145 return (FALSE);
146 }
147 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
148 if (buf == NULL) {
149 if (xdr_opaque(xdrs, oa->oa_base,
150 oa->oa_length) == FALSE) {
151 return (FALSE);
152 }
153 } else {
154 memmove(oa->oa_base, buf,
155 oa->oa_length);
156 /* no real need....
157 buf += RNDUP(oa->oa_length) /
158 sizeof (int32_t);
159 */
160 }
161 }
162 oa = &cmsg->rm_call.cb_verf;
163 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
164 if (buf == NULL) {
165 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
166 xdr_u_int(xdrs, &oa->oa_length) == FALSE) {
167 return (FALSE);
168 }
169 } else {
170 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
171 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf);
172 }
173 if (oa->oa_length) {
174 if (oa->oa_length > MAX_AUTH_BYTES) {
175 return (FALSE);
176 }
177 if (oa->oa_base == NULL) {
178 oa->oa_base = mem_alloc(oa->oa_length);
179 if (oa->oa_base == NULL)
180 return (FALSE);
181 }
182 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
183 if (buf == NULL) {
184 if (xdr_opaque(xdrs, oa->oa_base,
185 oa->oa_length) == FALSE) {
186 return (FALSE);
187 }
188 } else {
189 memmove(oa->oa_base, buf,
190 oa->oa_length);
191 /* no real need...
192 buf += RNDUP(oa->oa_length) /
193 sizeof (int32_t);
194 */
195 }
196 }
197 return (TRUE);
198 }
199 }
200 if (
201 xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) &&
202 xdr_enum(xdrs, (enum_t *)(void *)&(cmsg->rm_direction)) &&
203 (cmsg->rm_direction == CALL) &&
204 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
205 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
206 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) &&
207 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers)) &&
208 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_proc)) &&
209 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) )
210 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
211 return (FALSE);
212 }
213