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 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * Portions of this source code were derived from Berkeley 4.3 BSD
32 * under license from the Regents of the University of California.
33 */
34
35 #pragma ident "%Z%%M% %I% %E% SMI"
36
37 /*
38 * rpc_calmsg.c
39 */
40
41 #include <sys/param.h>
42 #include <sys/types.h>
43 #include <sys/t_lock.h>
44 #include <sys/systm.h>
45
46 #include <rpc/types.h>
47 #include <rpc/xdr.h>
48 #include <rpc/auth.h>
49 #include <rpc/clnt.h>
50 #include <rpc/rpc_msg.h>
51
52 /*
53 * XDR a call message
54 */
55 bool_t
xdr_callmsg(XDR * xdrs,struct rpc_msg * cmsg)56 xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg)
57 {
58 int32_t *buf;
59 struct opaque_auth *oa;
60
61 if (xdrs->x_op == XDR_ENCODE) {
62 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES)
63 return (FALSE);
64 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES)
65 return (FALSE);
66 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT +
67 RNDUP(cmsg->rm_call.cb_cred.oa_length) +
68 2 * BYTES_PER_XDR_UNIT +
69 RNDUP(cmsg->rm_call.cb_verf.oa_length));
70 if (buf != NULL) {
71 IXDR_PUT_INT32(buf, cmsg->rm_xid);
72 IXDR_PUT_ENUM(buf, cmsg->rm_direction);
73 if (cmsg->rm_direction != CALL)
74 return (FALSE);
75 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers);
76 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION)
77 return (FALSE);
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 bcopy(oa->oa_base, buf, 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 bcopy(oa->oa_base, buf, oa->oa_length);
93 return (TRUE);
94 }
95 }
96 if (xdrs->x_op == XDR_DECODE) {
97 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
98 if (buf != NULL) {
99 cmsg->rm_xid = IXDR_GET_INT32(buf);
100 cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
101 if (cmsg->rm_direction != CALL)
102 return (FALSE);
103 cmsg->rm_call.cb_rpcvers = IXDR_GET_INT32(buf);
104 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION)
105 return (FALSE);
106 cmsg->rm_call.cb_prog = IXDR_GET_INT32(buf);
107 cmsg->rm_call.cb_vers = IXDR_GET_INT32(buf);
108 cmsg->rm_call.cb_proc = IXDR_GET_INT32(buf);
109 oa = &cmsg->rm_call.cb_cred;
110 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
111 oa->oa_length = IXDR_GET_INT32(buf);
112 if (oa->oa_length) {
113 if (oa->oa_length > MAX_AUTH_BYTES)
114 return (FALSE);
115 if (oa->oa_base == NULL)
116 oa->oa_base = (caddr_t)
117 mem_alloc(oa->oa_length);
118 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
119 if (buf == NULL) {
120 if (xdr_opaque(xdrs, oa->oa_base,
121 oa->oa_length) == FALSE)
122 return (FALSE);
123 } else {
124 bcopy(buf, oa->oa_base, oa->oa_length);
125 }
126 }
127 oa = &cmsg->rm_call.cb_verf;
128 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
129 if (buf == NULL) {
130 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
131 xdr_u_int(xdrs, &oa->oa_length) == FALSE)
132 return (FALSE);
133 } else {
134 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
135 oa->oa_length = IXDR_GET_INT32(buf);
136 }
137 if (oa->oa_length) {
138 if (oa->oa_length > MAX_AUTH_BYTES)
139 return (FALSE);
140 if (oa->oa_base == NULL)
141 oa->oa_base = (caddr_t)
142 mem_alloc(oa->oa_length);
143 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
144 if (buf == NULL) {
145 if (xdr_opaque(xdrs, oa->oa_base,
146 oa->oa_length) == FALSE)
147 return (FALSE);
148 } else {
149 bcopy(buf, oa->oa_base, oa->oa_length);
150 }
151 }
152 return (TRUE);
153 }
154 }
155
156 if (xdr_u_int(xdrs, &(cmsg->rm_xid)) &&
157 xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
158 cmsg->rm_direction == CALL &&
159 xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
160 cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION &&
161 xdr_rpcprog(xdrs, &(cmsg->rm_call.cb_prog)) &&
162 xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_vers)) &&
163 xdr_rpcproc(xdrs, &(cmsg->rm_call.cb_proc)) &&
164 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)))
165 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
166
167 return (FALSE);
168 }
169