1 /*
2 * rpc_callmsg.c
3 *
4 * Copyright (c) 2010, Oracle America, Inc.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met:
9 *
10 * * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * * Redistributions in binary form must reproduce the above
13 * copyright notice, this list of conditions and the following
14 * disclaimer in the documentation and/or other materials
15 * provided with the distribution.
16 * * Neither the name of the "Oracle America, Inc." nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
27 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <string.h>
35 #include <sys/param.h>
36 #include <rpc/rpc.h>
37 #include <shlib-compat.h>
38
39 /*
40 * XDR a call message
41 */
42 bool_t
43 xdr_callmsg (XDR *xdrs, struct rpc_msg *cmsg)
44 {
45 int32_t *buf;
46 struct opaque_auth *oa;
47
48 if (xdrs->x_op == XDR_ENCODE)
49 {
50 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES)
51 {
52 return (FALSE);
53 }
54 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES)
55 {
56 return (FALSE);
57 }
58 buf = XDR_INLINE (xdrs, 8 * BYTES_PER_XDR_UNIT
59 + RNDUP (cmsg->rm_call.cb_cred.oa_length)
60 + 2 * BYTES_PER_XDR_UNIT
61 + RNDUP (cmsg->rm_call.cb_verf.oa_length));
62 if (buf != NULL)
63 {
64 (void) IXDR_PUT_LONG (buf, cmsg->rm_xid);
65 (void) IXDR_PUT_ENUM (buf, cmsg->rm_direction);
66 if (cmsg->rm_direction != CALL)
67 return FALSE;
68 (void) IXDR_PUT_LONG (buf, cmsg->rm_call.cb_rpcvers);
69 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION)
70 return FALSE;
71 (void) IXDR_PUT_LONG (buf, cmsg->rm_call.cb_prog);
72 (void) IXDR_PUT_LONG (buf, cmsg->rm_call.cb_vers);
73 (void) IXDR_PUT_LONG (buf, cmsg->rm_call.cb_proc);
74 oa = &cmsg->rm_call.cb_cred;
75 (void) IXDR_PUT_ENUM (buf, oa->oa_flavor);
76 (void) IXDR_PUT_INT32 (buf, oa->oa_length);
77 if (oa->oa_length)
78 {
79 memcpy ((caddr_t) buf, oa->oa_base, oa->oa_length);
80 buf = (int32_t *) ((char *) buf + RNDUP (oa->oa_length));
81 }
82 oa = &cmsg->rm_call.cb_verf;
83 (void) IXDR_PUT_ENUM (buf, oa->oa_flavor);
84 (void) IXDR_PUT_INT32 (buf, oa->oa_length);
85 if (oa->oa_length)
86 {
87 memcpy ((caddr_t) buf, oa->oa_base, oa->oa_length);
88 /* no real need....
89 buf = (long *) ((char *) buf + RNDUP(oa->oa_length));
90 */
91 }
92 return TRUE;
93 }
94 }
95 if (xdrs->x_op == XDR_DECODE)
96 {
97 buf = XDR_INLINE (xdrs, 8 * BYTES_PER_XDR_UNIT);
98 if (buf != NULL)
99 {
100 cmsg->rm_xid = IXDR_GET_LONG (buf);
101 cmsg->rm_direction = IXDR_GET_ENUM (buf, enum msg_type);
102 if (cmsg->rm_direction != CALL)
103 {
104 return FALSE;
105 }
106 cmsg->rm_call.cb_rpcvers = IXDR_GET_LONG (buf);
107 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION)
108 {
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_INT32 (buf);
117 if (oa->oa_length)
118 {
119 if (oa->oa_length > MAX_AUTH_BYTES)
120 return FALSE;
121 if (oa->oa_base == NULL)
122 {
123 oa->oa_base = (caddr_t)
124 mem_alloc (oa->oa_length);
125 }
126 buf = XDR_INLINE (xdrs, RNDUP (oa->oa_length));
127 if (buf == NULL)
128 {
129 if (xdr_opaque (xdrs, oa->oa_base,
130 oa->oa_length) == FALSE)
131 return FALSE;
132 }
133 else
134 {
135 memcpy (oa->oa_base, (caddr_t) buf, oa->oa_length);
136 /* no real need....
137 buf = (long *) ((char *) buf
138 + RNDUP(oa->oa_length));
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 {
146 if (xdr_enum (xdrs, &oa->oa_flavor) == FALSE ||
147 xdr_u_int (xdrs, &oa->oa_length) == FALSE)
148 {
149 return FALSE;
150 }
151 }
152 else
153 {
154 oa->oa_flavor = IXDR_GET_ENUM (buf, enum_t);
155 oa->oa_length = IXDR_GET_INT32 (buf);
156 }
157 if (oa->oa_length)
158 {
159 if (oa->oa_length > MAX_AUTH_BYTES)
160 return FALSE;
161 if (oa->oa_base == NULL)
162 {
163 oa->oa_base = (caddr_t)
164 mem_alloc (oa->oa_length);
165 }
166 buf = XDR_INLINE (xdrs, RNDUP (oa->oa_length));
167 if (buf == NULL)
168 {
169 if (xdr_opaque (xdrs, oa->oa_base,
170 oa->oa_length) == FALSE)
171 return FALSE;
172 }
173 else
174 {
175 memcpy (oa->oa_base, (caddr_t) buf, oa->oa_length);
176 /* no real need...
177 buf = (long *) ((char *) buf
178 + RNDUP(oa->oa_length));
179 */
180 }
181 }
182 return TRUE;
183 }
184 }
185 if (
186 xdr_u_long (xdrs, &(cmsg->rm_xid)) &&
187 xdr_enum (xdrs, (enum_t *) & (cmsg->rm_direction)) &&
188 (cmsg->rm_direction == CALL) &&
189 xdr_u_long (xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
190 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
191 xdr_u_long (xdrs, &(cmsg->rm_call.cb_prog)) &&
192 xdr_u_long (xdrs, &(cmsg->rm_call.cb_vers)) &&
193 xdr_u_long (xdrs, &(cmsg->rm_call.cb_proc)) &&
194 xdr_opaque_auth (xdrs, &(cmsg->rm_call.cb_cred)))
195 return xdr_opaque_auth (xdrs, &(cmsg->rm_call.cb_verf));
196 return FALSE;
197 }
198 libc_hidden_nolink_sunrpc (xdr_callmsg, GLIBC_2_0)