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 #include "mt.h"
37 #include <stdlib.h>
38 #include <sys/param.h>
39 #include <rpc/rpc.h>
40 #include <syslog.h>
41 #include <sys/byteorder.h>
42
43 extern bool_t xdr_opaque_auth(XDR *, struct opaque_auth *);
44
45 /*
46 * XDR a call message
47 */
48 bool_t
xdr_callmsg(XDR * xdrs,struct rpc_msg * cmsg)49 xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg)
50 {
51 rpc_inline_t *buf;
52 struct opaque_auth *oa;
53
54 if (xdrs->x_op == XDR_ENCODE) {
55 uint_t credrndup;
56 uint_t verfrndup;
57
58 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES)
59 return (FALSE);
60 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES)
61 return (FALSE);
62 credrndup = RNDUP(cmsg->rm_call.cb_cred.oa_length);
63 verfrndup = RNDUP(cmsg->rm_call.cb_verf.oa_length);
64 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT +
65 credrndup + 2 * BYTES_PER_XDR_UNIT + verfrndup);
66 if (buf != NULL) {
67 IXDR_PUT_INT32(buf, cmsg->rm_xid);
68 IXDR_PUT_ENUM(buf, cmsg->rm_direction);
69 if (cmsg->rm_direction != CALL)
70 return (FALSE);
71 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers);
72 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION)
73 return (FALSE);
74 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog);
75 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers);
76 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc);
77 oa = &cmsg->rm_call.cb_cred;
78 IXDR_PUT_ENUM(buf, oa->oa_flavor);
79 IXDR_PUT_INT32(buf, oa->oa_length);
80 if (oa->oa_length) {
81 (void) memcpy(buf, oa->oa_base, oa->oa_length);
82 buf += credrndup / BYTES_PER_XDR_UNIT;
83 if ((credrndup -= oa->oa_length) > 0)
84 (void) memset((char *)buf - credrndup,
85 0, credrndup);
86 }
87 oa = &cmsg->rm_call.cb_verf;
88 IXDR_PUT_ENUM(buf, oa->oa_flavor);
89 IXDR_PUT_INT32(buf, oa->oa_length);
90 if (oa->oa_length) {
91 (void) memcpy(buf, oa->oa_base, oa->oa_length);
92 buf += verfrndup / BYTES_PER_XDR_UNIT;
93 if ((verfrndup -= oa->oa_length) > 0)
94 (void) memset((char *)buf - verfrndup,
95 0, verfrndup);
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_INT32(buf);
104 cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
105 if (cmsg->rm_direction != CALL)
106 return (FALSE);
107 cmsg->rm_call.cb_rpcvers = IXDR_GET_INT32(buf);
108 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION)
109 return (FALSE);
110 cmsg->rm_call.cb_prog = IXDR_GET_INT32(buf);
111 cmsg->rm_call.cb_vers = IXDR_GET_INT32(buf);
112 cmsg->rm_call.cb_proc = IXDR_GET_INT32(buf);
113 oa = &cmsg->rm_call.cb_cred;
114 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
115 oa->oa_length = IXDR_GET_INT32(buf);
116 if (oa->oa_length) {
117 if (oa->oa_length > MAX_AUTH_BYTES)
118 return (FALSE);
119 if (oa->oa_base == NULL) {
120 oa->oa_base = malloc(oa->oa_length);
121 if (oa->oa_base == NULL) {
122 syslog(LOG_ERR, "xdr_callmsg : "
123 "out of memory.");
124 return (FALSE);
125 }
126 }
127 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
128 if (buf == NULL) {
129 if (xdr_opaque(xdrs, oa->oa_base,
130 oa->oa_length) == FALSE)
131 return (FALSE);
132 } else {
133 (void) memcpy(oa->oa_base,
134 buf, (size_t)oa->oa_length);
135 /*
136 * no real need....
137 * buf += RNDUP(oa->oa_length) /
138 * (int)sizeof (int32_t);
139 */
140 }
141 }
142 oa = &cmsg->rm_call.cb_verf;
143 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
144 if (buf == NULL) {
145 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
146 xdr_u_int(xdrs, &oa->oa_length) == FALSE)
147 return (FALSE);
148 } else {
149 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
150 oa->oa_length = IXDR_GET_INT32(buf);
151 }
152 if (oa->oa_length) {
153 if (oa->oa_length > MAX_AUTH_BYTES)
154 return (FALSE);
155 if (oa->oa_base == NULL) {
156 oa->oa_base = malloc(oa->oa_length);
157 if (oa->oa_base == NULL) {
158 syslog(LOG_ERR, "xdr_callmsg : "
159 "out of memory.");
160 return (FALSE);
161 }
162 }
163 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
164 if (buf == NULL) {
165 if (xdr_opaque(xdrs, oa->oa_base,
166 oa->oa_length) == FALSE)
167 return (FALSE);
168 } else {
169 (void) memcpy(oa->oa_base,
170 buf, (size_t)oa->oa_length);
171 /*
172 * no real need...
173 * buf += RNDUP(oa->oa_length) /
174 * (int)sizeof (int32_t);
175 */
176 }
177 }
178 return (TRUE);
179 }
180 }
181 if (xdr_u_int(xdrs, &(cmsg->rm_xid)) &&
182 xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
183 (cmsg->rm_direction == CALL) &&
184 xdr_u_int(xdrs, (uint_t *)&(cmsg->rm_call.cb_rpcvers)) &&
185 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
186 xdr_u_int(xdrs, (uint_t *)&(cmsg->rm_call.cb_prog)) &&
187 xdr_u_int(xdrs, (uint_t *)&(cmsg->rm_call.cb_vers)) &&
188 xdr_u_int(xdrs, (uint_t *)&(cmsg->rm_call.cb_proc)) &&
189 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred))) {
190 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
191 }
192 return (FALSE);
193 }
194