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 /*
36 * rpc_calmsg.c
37 */
38
39 #include <sys/param.h>
40 #include <sys/types.h>
41 #include <sys/t_lock.h>
42 #include <sys/systm.h>
43
44 #include <rpc/types.h>
45 #include <rpc/xdr.h>
46 #include <rpc/auth.h>
47 #include <rpc/clnt.h>
48 #include <rpc/rpc_msg.h>
49
50 /*
51 * XDR a call message
52 */
53 bool_t
xdr_callmsg(XDR * xdrs,struct rpc_msg * cmsg)54 xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg)
55 {
56 rpc_inline_t *buf;
57 struct opaque_auth *oa;
58
59 if (xdrs->x_op == XDR_ENCODE) {
60 uint_t credrndup;
61 uint_t verfrndup;
62
63 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES)
64 return (FALSE);
65 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES)
66 return (FALSE);
67 credrndup = RNDUP(cmsg->rm_call.cb_cred.oa_length);
68 verfrndup = RNDUP(cmsg->rm_call.cb_verf.oa_length);
69 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT +
70 credrndup + 2 * BYTES_PER_XDR_UNIT + verfrndup);
71 if (buf != NULL) {
72 IXDR_PUT_INT32(buf, cmsg->rm_xid);
73 IXDR_PUT_ENUM(buf, cmsg->rm_direction);
74 if (cmsg->rm_direction != CALL)
75 return (FALSE);
76 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers);
77 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION)
78 return (FALSE);
79 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog);
80 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers);
81 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc);
82 oa = &cmsg->rm_call.cb_cred;
83 IXDR_PUT_ENUM(buf, oa->oa_flavor);
84 IXDR_PUT_INT32(buf, oa->oa_length);
85 if (oa->oa_length) {
86 bcopy(oa->oa_base, buf, oa->oa_length);
87 buf += credrndup / BYTES_PER_XDR_UNIT;
88 if ((credrndup -= oa->oa_length) > 0)
89 bzero((char *)buf - credrndup,
90 credrndup);
91 }
92 oa = &cmsg->rm_call.cb_verf;
93 IXDR_PUT_ENUM(buf, oa->oa_flavor);
94 IXDR_PUT_INT32(buf, oa->oa_length);
95 if (oa->oa_length) {
96 bcopy(oa->oa_base, buf, oa->oa_length);
97 buf += verfrndup / BYTES_PER_XDR_UNIT;
98 if ((verfrndup -= oa->oa_length) > 0)
99 bzero((char *)buf - verfrndup,
100 verfrndup);
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_INT32(buf);
109 cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
110 if (cmsg->rm_direction != CALL)
111 return (FALSE);
112 cmsg->rm_call.cb_rpcvers = IXDR_GET_INT32(buf);
113 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION)
114 return (FALSE);
115 cmsg->rm_call.cb_prog = IXDR_GET_INT32(buf);
116 cmsg->rm_call.cb_vers = IXDR_GET_INT32(buf);
117 cmsg->rm_call.cb_proc = IXDR_GET_INT32(buf);
118 oa = &cmsg->rm_call.cb_cred;
119 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
120 oa->oa_length = IXDR_GET_INT32(buf);
121 if (oa->oa_length) {
122 if (oa->oa_length > MAX_AUTH_BYTES)
123 return (FALSE);
124 if (oa->oa_base == NULL)
125 oa->oa_base = (caddr_t)
126 mem_alloc(oa->oa_length);
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 bcopy(buf, oa->oa_base, oa->oa_length);
134 }
135 }
136 oa = &cmsg->rm_call.cb_verf;
137 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
138 if (buf == NULL) {
139 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
140 xdr_u_int(xdrs, &oa->oa_length) == FALSE)
141 return (FALSE);
142 } else {
143 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
144 oa->oa_length = IXDR_GET_INT32(buf);
145 }
146 if (oa->oa_length) {
147 if (oa->oa_length > MAX_AUTH_BYTES)
148 return (FALSE);
149 if (oa->oa_base == NULL)
150 oa->oa_base = (caddr_t)
151 mem_alloc(oa->oa_length);
152 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
153 if (buf == NULL) {
154 if (xdr_opaque(xdrs, oa->oa_base,
155 oa->oa_length) == FALSE)
156 return (FALSE);
157 } else {
158 bcopy(buf, oa->oa_base, oa->oa_length);
159 }
160 }
161 return (TRUE);
162 }
163 }
164
165 if (xdr_u_int(xdrs, &(cmsg->rm_xid)) &&
166 xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
167 cmsg->rm_direction == CALL &&
168 xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
169 cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION &&
170 xdr_rpcprog(xdrs, &(cmsg->rm_call.cb_prog)) &&
171 xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_vers)) &&
172 xdr_rpcproc(xdrs, &(cmsg->rm_call.cb_proc)) &&
173 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)))
174 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
175
176 return (FALSE);
177 }
178