1 /* $NetBSD: svc_raw.c,v 1.14 2000/07/06 03:10:35 christos Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (c) 2009, Sun Microsystems, Inc.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 * - Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright notice,
14 * this list of conditions and the following disclaimer in the documentation
15 * and/or other materials provided with the distribution.
16 * - Neither the name of Sun Microsystems, 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 "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32 /*
33 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
34 */
35
36 /*
37 * svc_raw.c, This a toy for simple testing and timing.
38 * Interface to create an rpc client and server in the same UNIX process.
39 * This lets us similate rpc and get rpc (round trip) overhead, without
40 * any interference from the kernel.
41 *
42 */
43
44 #include "namespace.h"
45 #include "reentrant.h"
46 #include <rpc/rpc.h>
47 #include <sys/types.h>
48 #include <rpc/raw.h>
49 #include <stdlib.h>
50 #include "un-namespace.h"
51 #include "mt_misc.h"
52
53 #ifndef UDPMSGSIZE
54 #define UDPMSGSIZE 8800
55 #endif
56
57 /*
58 * This is the "network" that we will be moving data over
59 */
60 static struct svc_raw_private {
61 char *raw_buf; /* should be shared with the cl handle */
62 SVCXPRT *server;
63 XDR xdr_stream;
64 char verf_body[MAX_AUTH_BYTES];
65 } *svc_raw_private;
66
67 static enum xprt_stat svc_raw_stat(SVCXPRT *);
68 static bool_t svc_raw_recv(SVCXPRT *, struct rpc_msg *);
69 static bool_t svc_raw_reply(SVCXPRT *, struct rpc_msg *);
70 static bool_t svc_raw_getargs(SVCXPRT *, xdrproc_t, void *);
71 static bool_t svc_raw_freeargs(SVCXPRT *, xdrproc_t, void *);
72 static void svc_raw_destroy(SVCXPRT *);
73 static void svc_raw_ops(SVCXPRT *);
74 static bool_t svc_raw_control(SVCXPRT *, const u_int, void *);
75
76 char *__rpc_rawcombuf = NULL;
77
78 SVCXPRT *
svc_raw_create(void)79 svc_raw_create(void)
80 {
81 struct svc_raw_private *srp;
82 /* VARIABLES PROTECTED BY svcraw_lock: svc_raw_private, srp */
83
84 mutex_lock(&svcraw_lock);
85 srp = svc_raw_private;
86 if (srp == NULL) {
87 srp = (struct svc_raw_private *)calloc(1, sizeof (*srp));
88 if (srp == NULL) {
89 mutex_unlock(&svcraw_lock);
90 return (NULL);
91 }
92 if (__rpc_rawcombuf == NULL) {
93 __rpc_rawcombuf = calloc(UDPMSGSIZE, sizeof (char));
94 if (__rpc_rawcombuf == NULL) {
95 free(srp);
96 mutex_unlock(&svcraw_lock);
97 return (NULL);
98 }
99 }
100 srp->raw_buf = __rpc_rawcombuf; /* Share it with the client */
101 srp->server = svc_xprt_alloc();
102 if (srp->server == NULL) {
103 free(__rpc_rawcombuf);
104 free(srp);
105 mutex_unlock(&svcraw_lock);
106 return (NULL);
107 }
108 svc_raw_private = srp;
109 }
110 srp->server->xp_fd = FD_SETSIZE;
111 srp->server->xp_port = 0;
112 svc_raw_ops(srp->server);
113 srp->server->xp_verf.oa_base = srp->verf_body;
114 xdrmem_create(&srp->xdr_stream, srp->raw_buf, UDPMSGSIZE, XDR_DECODE);
115 xprt_register(srp->server);
116 mutex_unlock(&svcraw_lock);
117 return (srp->server);
118 }
119
120 /*ARGSUSED*/
121 static enum xprt_stat
svc_raw_stat(SVCXPRT * xprt)122 svc_raw_stat(SVCXPRT *xprt)
123 {
124 return (XPRT_IDLE);
125 }
126
127 /*ARGSUSED*/
128 static bool_t
svc_raw_recv(SVCXPRT * xprt,struct rpc_msg * msg)129 svc_raw_recv(SVCXPRT *xprt, struct rpc_msg *msg)
130 {
131 struct svc_raw_private *srp;
132 XDR *xdrs;
133
134 mutex_lock(&svcraw_lock);
135 srp = svc_raw_private;
136 if (srp == NULL) {
137 mutex_unlock(&svcraw_lock);
138 return (FALSE);
139 }
140 mutex_unlock(&svcraw_lock);
141
142 xdrs = &srp->xdr_stream;
143 xdrs->x_op = XDR_DECODE;
144 (void) XDR_SETPOS(xdrs, 0);
145 if (! xdr_callmsg(xdrs, msg)) {
146 return (FALSE);
147 }
148 return (TRUE);
149 }
150
151 /*ARGSUSED*/
152 static bool_t
svc_raw_reply(SVCXPRT * xprt,struct rpc_msg * msg)153 svc_raw_reply(SVCXPRT *xprt, struct rpc_msg *msg)
154 {
155 struct svc_raw_private *srp;
156 XDR *xdrs;
157 bool_t stat;
158 xdrproc_t xdr_proc;
159 caddr_t xdr_where;
160
161 mutex_lock(&svcraw_lock);
162 srp = svc_raw_private;
163 if (srp == NULL) {
164 mutex_unlock(&svcraw_lock);
165 return (FALSE);
166 }
167 mutex_unlock(&svcraw_lock);
168
169 xdrs = &srp->xdr_stream;
170 xdrs->x_op = XDR_ENCODE;
171 (void) XDR_SETPOS(xdrs, 0);
172 if (msg->rm_reply.rp_stat == MSG_ACCEPTED &&
173 msg->rm_reply.rp_acpt.ar_stat == SUCCESS) {
174 xdr_proc = msg->acpted_rply.ar_results.proc;
175 xdr_where = msg->acpted_rply.ar_results.where;
176 msg->acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
177 msg->acpted_rply.ar_results.where = NULL;
178
179 stat = xdr_replymsg(xdrs, msg) &&
180 SVCAUTH_WRAP(&SVC_AUTH(xprt), xdrs, xdr_proc, xdr_where);
181 } else {
182 stat = xdr_replymsg(xdrs, msg);
183 }
184 if (!stat) {
185 return (FALSE);
186 }
187 (void) XDR_GETPOS(xdrs); /* called just for overhead */
188 return (TRUE);
189 }
190
191 /*ARGSUSED*/
192 static bool_t
svc_raw_getargs(SVCXPRT * xprt,xdrproc_t xdr_args,void * args_ptr)193 svc_raw_getargs(SVCXPRT *xprt, xdrproc_t xdr_args, void *args_ptr)
194 {
195 struct svc_raw_private *srp;
196
197 mutex_lock(&svcraw_lock);
198 srp = svc_raw_private;
199 if (srp == NULL) {
200 mutex_unlock(&svcraw_lock);
201 return (FALSE);
202 }
203 mutex_unlock(&svcraw_lock);
204
205 return (SVCAUTH_UNWRAP(&SVC_AUTH(xprt), &srp->xdr_stream,
206 xdr_args, args_ptr));
207 }
208
209 /*ARGSUSED*/
210 static bool_t
svc_raw_freeargs(SVCXPRT * xprt,xdrproc_t xdr_args,void * args_ptr)211 svc_raw_freeargs(SVCXPRT *xprt, xdrproc_t xdr_args, void *args_ptr)
212 {
213 struct svc_raw_private *srp;
214 XDR *xdrs;
215
216 mutex_lock(&svcraw_lock);
217 srp = svc_raw_private;
218 if (srp == NULL) {
219 mutex_unlock(&svcraw_lock);
220 return (FALSE);
221 }
222 mutex_unlock(&svcraw_lock);
223
224 xdrs = &srp->xdr_stream;
225 xdrs->x_op = XDR_FREE;
226 return (*xdr_args)(xdrs, args_ptr);
227 }
228
229 /*ARGSUSED*/
230 static void
svc_raw_destroy(SVCXPRT * xprt)231 svc_raw_destroy(SVCXPRT *xprt)
232 {
233 }
234
235 /*ARGSUSED*/
236 static bool_t
svc_raw_control(SVCXPRT * xprt,const u_int rq,void * in)237 svc_raw_control(SVCXPRT *xprt, const u_int rq, void *in)
238 {
239 return (FALSE);
240 }
241
242 static void
svc_raw_ops(SVCXPRT * xprt)243 svc_raw_ops(SVCXPRT *xprt)
244 {
245 static struct xp_ops ops;
246 static struct xp_ops2 ops2;
247
248 /* VARIABLES PROTECTED BY ops_lock: ops */
249
250 mutex_lock(&ops_lock);
251 if (ops.xp_recv == NULL) {
252 ops.xp_recv = svc_raw_recv;
253 ops.xp_stat = svc_raw_stat;
254 ops.xp_getargs = svc_raw_getargs;
255 ops.xp_reply = svc_raw_reply;
256 ops.xp_freeargs = svc_raw_freeargs;
257 ops.xp_destroy = svc_raw_destroy;
258 ops2.xp_control = svc_raw_control;
259 }
260 xprt->xp_ops = &ops;
261 xprt->xp_ops2 = &ops2;
262 mutex_unlock(&ops_lock);
263 }
264