1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23 /*
24 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
25 * Use is subject to license terms.
26 */
27
28 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
29 /* All Rights Reserved */
30 /*
31 * Portions of this source code were derived from Berkeley
32 * 4.3 BSD under license from the Regents of the University of
33 * California.
34 */
35
36 #pragma ident "%Z%%M% %I% %E% SMI"
37
38 #include "mt.h"
39 #include <stdlib.h>
40 #include <sys/param.h>
41 #include <rpc/rpc.h>
42 #include <syslog.h>
43 #include <sys/byteorder.h>
44
45 extern bool_t xdr_opaque_auth(XDR *, struct opaque_auth *);
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 rpc_inline_t *buf;
54 struct opaque_auth *oa;
55
56 if (xdrs->x_op == XDR_ENCODE) {
57 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES)
58 return (FALSE);
59 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES)
60 return (FALSE);
61 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
62 + RNDUP(cmsg->rm_call.cb_cred.oa_length)
63 + 2 * BYTES_PER_XDR_UNIT
64 + RNDUP(cmsg->rm_call.cb_verf.oa_length));
65 if (buf != NULL) {
66 IXDR_PUT_INT32(buf, cmsg->rm_xid);
67 IXDR_PUT_ENUM(buf, cmsg->rm_direction);
68 if (cmsg->rm_direction != CALL)
69 return (FALSE);
70 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers);
71 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION)
72 return (FALSE);
73 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog);
74 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers);
75 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc);
76 oa = &cmsg->rm_call.cb_cred;
77 IXDR_PUT_ENUM(buf, oa->oa_flavor);
78 IXDR_PUT_INT32(buf, oa->oa_length);
79 if (oa->oa_length) {
80 (void) memcpy(buf, oa->oa_base, oa->oa_length);
81 buf += RNDUP(oa->oa_length) / sizeof (int32_t);
82 }
83 oa = &cmsg->rm_call.cb_verf;
84 IXDR_PUT_ENUM(buf, oa->oa_flavor);
85 IXDR_PUT_INT32(buf, oa->oa_length);
86 if (oa->oa_length) {
87 (void) memcpy(buf, oa->oa_base, oa->oa_length);
88 /*
89 * no real need....
90 * buf += RNDUP(oa->oa_length) / sizeof
91 * (int32_t);
92 */
93 }
94 return (TRUE);
95 }
96 }
97 if (xdrs->x_op == XDR_DECODE) {
98 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
99 if (buf != NULL) {
100 cmsg->rm_xid = IXDR_GET_INT32(buf);
101 cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
102 if (cmsg->rm_direction != CALL)
103 return (FALSE);
104 cmsg->rm_call.cb_rpcvers = IXDR_GET_INT32(buf);
105 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION)
106 return (FALSE);
107 cmsg->rm_call.cb_prog = IXDR_GET_INT32(buf);
108 cmsg->rm_call.cb_vers = IXDR_GET_INT32(buf);
109 cmsg->rm_call.cb_proc = IXDR_GET_INT32(buf);
110 oa = &cmsg->rm_call.cb_cred;
111 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
112 oa->oa_length = IXDR_GET_INT32(buf);
113 if (oa->oa_length) {
114 if (oa->oa_length > MAX_AUTH_BYTES)
115 return (FALSE);
116 if (oa->oa_base == NULL) {
117 oa->oa_base = malloc(oa->oa_length);
118 if (oa->oa_base == NULL) {
119 syslog(LOG_ERR,
120 "xdr_callmsg : "
121 "out of memory.");
122 return (FALSE);
123 }
124 }
125 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
126 if (buf == NULL) {
127 if (xdr_opaque(xdrs, oa->oa_base,
128 oa->oa_length) == FALSE)
129 return (FALSE);
130 } else {
131 (void) memcpy(oa->oa_base,
132 buf, (size_t)oa->oa_length);
133 /*
134 * no real need....
135 * buf += RNDUP(oa->oa_length) /
136 * (int)sizeof (int32_t);
137 */
138 }
139 }
140 oa = &cmsg->rm_call.cb_verf;
141 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
142 if (buf == NULL) {
143 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
144 xdr_u_int(xdrs, &oa->oa_length) == FALSE)
145 return (FALSE);
146 } else {
147 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
148 oa->oa_length = IXDR_GET_INT32(buf);
149 }
150 if (oa->oa_length) {
151 if (oa->oa_length > MAX_AUTH_BYTES)
152 return (FALSE);
153 if (oa->oa_base == NULL) {
154 oa->oa_base = malloc(oa->oa_length);
155 if (oa->oa_base == NULL) {
156 syslog(LOG_ERR,
157 "xdr_callmsg : "
158 "out of memory.");
159 return (FALSE);
160 }
161 }
162 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
163 if (buf == NULL) {
164 if (xdr_opaque(xdrs, oa->oa_base,
165 oa->oa_length) == FALSE)
166 return (FALSE);
167 } else {
168 (void) memcpy(oa->oa_base,
169 buf, (size_t)oa->oa_length);
170 /*
171 * no real need...
172 * buf += RNDUP(oa->oa_length) /
173 * (int)sizeof (int32_t);
174 */
175 }
176 }
177 return (TRUE);
178 }
179 }
180 if (xdr_u_int(xdrs, &(cmsg->rm_xid)) &&
181 xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
182 (cmsg->rm_direction == CALL) &&
183 xdr_u_int(xdrs, (uint_t *)&(cmsg->rm_call.cb_rpcvers)) &&
184 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
185 xdr_u_int(xdrs, (uint_t *)&(cmsg->rm_call.cb_prog)) &&
186 xdr_u_int(xdrs, (uint_t *)&(cmsg->rm_call.cb_vers)) &&
187 xdr_u_int(xdrs, (uint_t *)&(cmsg->rm_call.cb_proc)) &&
188 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred))) {
189 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
190 }
191 return (FALSE);
192 }
193