Wed Feb 14 00:21:17 1996 David Mosberger-Tang <davidm@azstarnet.com>
[kopensolaris-gnu/glibc.git] / sunrpc / rpc_cmsg.c
1 /* @(#)rpc_callmsg.c    2.1 88/07/29 4.0 RPCSRC */
2 /*
3  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
4  * unrestricted use provided that this legend is included on all tape
5  * media and as a part of the software program in whole or part.  Users
6  * may copy or modify Sun RPC without charge, but are not authorized
7  * to license or distribute it to anyone else except as part of a product or
8  * program developed by the user.
9  * 
10  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
12  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13  * 
14  * Sun RPC is provided with no support and without any obligation on the
15  * part of Sun Microsystems, Inc. to assist in its use, correction,
16  * modification or enhancement.
17  * 
18  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20  * OR ANY PART THEREOF.
21  * 
22  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23  * or profits or other special, indirect and consequential damages, even if
24  * Sun has been advised of the possibility of such damages.
25  * 
26  * Sun Microsystems, Inc.
27  * 2550 Garcia Avenue
28  * Mountain View, California  94043
29  */
30 #if !defined(lint) && defined(SCCSIDS)
31 static char sccsid[] = "@(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro";
32 #endif
33
34 /*
35  * rpc_callmsg.c
36  *
37  * Copyright (C) 1984, Sun Microsystems, Inc.
38  *
39  */
40
41 #include <sys/param.h>
42
43 #include <rpc/rpc.h>
44
45 /*
46  * XDR a call message
47  */
48 bool_t
49 xdr_callmsg(xdrs, cmsg)
50         register XDR *xdrs;
51         register struct rpc_msg *cmsg;
52 {
53         register long *buf;
54         register 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                 }
60                 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) {
61                         return (FALSE);
62                 }
63                 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
64                         + RNDUP(cmsg->rm_call.cb_cred.oa_length)
65                         + 2 * BYTES_PER_XDR_UNIT
66                         + RNDUP(cmsg->rm_call.cb_verf.oa_length));
67                 if (buf != NULL) {
68                         IXDR_PUT_LONG(buf, cmsg->rm_xid);
69                         IXDR_PUT_ENUM(buf, cmsg->rm_direction);
70                         if (cmsg->rm_direction != CALL) {
71                                 return (FALSE);
72                         }
73                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_rpcvers);
74                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
75                                 return (FALSE);
76                         }
77                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_prog);
78                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_vers);
79                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_proc);
80                         oa = &cmsg->rm_call.cb_cred;
81                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
82                         IXDR_PUT_LONG(buf, oa->oa_length);
83                         if (oa->oa_length) {
84                                 bcopy(oa->oa_base, (caddr_t)buf, oa->oa_length);
85                                 buf = (long *) ((char *) buf + RNDUP(oa->oa_length));
86                         }
87                         oa = &cmsg->rm_call.cb_verf;
88                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
89                         IXDR_PUT_LONG(buf, oa->oa_length);
90                         if (oa->oa_length) {
91                                 bcopy(oa->oa_base, (caddr_t)buf, oa->oa_length);
92                                 /* no real need....
93                                 buf = (long *) ((char *) buf + RNDUP(oa->oa_length));
94                                 */
95                         }
96                         return (TRUE);
97                 }
98         }
99         if (xdrs->x_op == XDR_DECODE) {
100                 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
101                 if (buf != NULL) {
102                         cmsg->rm_xid = IXDR_GET_LONG(buf);
103                         cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
104                         if (cmsg->rm_direction != CALL) {
105                                 return (FALSE);
106                         }
107                         cmsg->rm_call.cb_rpcvers = IXDR_GET_LONG(buf);
108                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
109                                 return (FALSE);
110                         }
111                         cmsg->rm_call.cb_prog = IXDR_GET_LONG(buf);
112                         cmsg->rm_call.cb_vers = IXDR_GET_LONG(buf);
113                         cmsg->rm_call.cb_proc = IXDR_GET_LONG(buf);
114                         oa = &cmsg->rm_call.cb_cred;
115                         oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
116                         oa->oa_length = IXDR_GET_LONG(buf);
117                         if (oa->oa_length) {
118                                 if (oa->oa_length > MAX_AUTH_BYTES) {
119                                         return (FALSE);
120                                 }
121                                 if (oa->oa_base == NULL) {
122                                         oa->oa_base = (caddr_t)
123                                                 mem_alloc(oa->oa_length);
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                                         }
131                                 } else {
132                                         bcopy((caddr_t)buf, oa->oa_base,
133                                             oa->oa_length);
134                                         /* no real need....
135                                         buf = (long *) ((char *) buf
136                                               + RNDUP(oa->oa_length));
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                                 }
147                         } else {
148                                 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
149                                 oa->oa_length = IXDR_GET_LONG(buf);
150                         }
151                         if (oa->oa_length) {
152                                 if (oa->oa_length > MAX_AUTH_BYTES) {
153                                         return (FALSE);
154                                 }
155                                 if (oa->oa_base == NULL) {
156                                         oa->oa_base = (caddr_t)
157                                                 mem_alloc(oa->oa_length);
158                                 }
159                                 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
160                                 if (buf == NULL) {
161                                         if (xdr_opaque(xdrs, oa->oa_base,
162                                             oa->oa_length) == FALSE) {
163                                                 return (FALSE);
164                                         }
165                                 } else {
166                                         bcopy((caddr_t)buf, oa->oa_base,
167                                             oa->oa_length);
168                                         /* no real need...
169                                         buf = (long *) ((char *) buf
170                                               + RNDUP(oa->oa_length));
171                                         */
172                                 }
173                         }
174                         return (TRUE);
175                 }
176         }
177         if (
178             xdr_u_long(xdrs, &(cmsg->rm_xid)) &&
179             xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
180             (cmsg->rm_direction == CALL) &&
181             xdr_u_long(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
182             (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
183             xdr_u_long(xdrs, &(cmsg->rm_call.cb_prog)) &&
184             xdr_u_long(xdrs, &(cmsg->rm_call.cb_vers)) &&
185             xdr_u_long(xdrs, &(cmsg->rm_call.cb_proc)) &&
186             xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) )
187             return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
188         return (FALSE);
189 }
190