xref: /titanic_44/usr/src/uts/common/rpc/rpc_calmsg.c (revision 3f7d54a6b84904c8f4d8daa4c7b577bede7df8b9)
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
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