1 | /* |
2 | * clnt_raw.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 | * Memory based rpc for simple testing and timing. |
34 | * Interface to create an rpc client and server in the same process. |
35 | * This lets us simulate rpc and get round trip overhead, without |
36 | * any interference from the kernel. |
37 | */ |
38 | |
39 | #include <rpc/rpc.h> |
40 | #include <rpc/svc.h> |
41 | #include <rpc/xdr.h> |
42 | #include <libintl.h> |
43 | |
44 | #define MCALL_MSG_SIZE 24 |
45 | |
46 | /* |
47 | * This is the "network" we will be moving stuff over. |
48 | */ |
49 | struct clntraw_private_s |
50 | { |
51 | CLIENT client_object; |
52 | XDR xdr_stream; |
53 | char _raw_buf[UDPMSGSIZE]; |
54 | union |
55 | { |
56 | char msg[MCALL_MSG_SIZE]; |
57 | u_long rm_xid; |
58 | } mashl_callmsg; |
59 | u_int mcnt; |
60 | }; |
61 | #ifdef _RPC_THREAD_SAFE_ |
62 | #define clntraw_private RPC_THREAD_VARIABLE(clntraw_private_s) |
63 | #else |
64 | static struct clntraw_private_s *clntraw_private; |
65 | #endif |
66 | |
67 | static enum clnt_stat clntraw_call (CLIENT *, u_long, xdrproc_t, caddr_t, |
68 | xdrproc_t, caddr_t, struct timeval); |
69 | static void clntraw_abort (void); |
70 | static void clntraw_geterr (CLIENT *, struct rpc_err *); |
71 | static bool_t clntraw_freeres (CLIENT *, xdrproc_t, caddr_t); |
72 | static bool_t clntraw_control (CLIENT *, int, char *); |
73 | static void clntraw_destroy (CLIENT *); |
74 | |
75 | static const struct clnt_ops client_ops = |
76 | { |
77 | clntraw_call, |
78 | clntraw_abort, |
79 | clntraw_geterr, |
80 | clntraw_freeres, |
81 | clntraw_destroy, |
82 | clntraw_control |
83 | }; |
84 | |
85 | /* |
86 | * Create a client handle for memory based rpc. |
87 | */ |
88 | CLIENT * |
89 | clntraw_create (u_long prog, u_long vers) |
90 | { |
91 | struct clntraw_private_s *clp = clntraw_private; |
92 | struct rpc_msg call_msg; |
93 | XDR *xdrs; |
94 | CLIENT *client; |
95 | |
96 | if (clp == 0) |
97 | { |
98 | clp = (struct clntraw_private_s *) calloc (1, sizeof (*clp)); |
99 | if (clp == 0) |
100 | return (0); |
101 | clntraw_private = clp; |
102 | } |
103 | xdrs = &clp->xdr_stream; |
104 | client = &clp->client_object; |
105 | /* |
106 | * pre-serialize the static part of the call msg and stash it away |
107 | */ |
108 | call_msg.rm_direction = CALL; |
109 | call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; |
110 | call_msg.rm_call.cb_prog = prog; |
111 | call_msg.rm_call.cb_vers = vers; |
112 | xdrmem_create (xdrs, clp->mashl_callmsg.msg, MCALL_MSG_SIZE, XDR_ENCODE); |
113 | if (!xdr_callhdr (xdrs, &call_msg)) |
114 | { |
115 | perror (_ ("clnt_raw.c: fatal header serialization error" )); |
116 | } |
117 | clp->mcnt = XDR_GETPOS (xdrs); |
118 | XDR_DESTROY (xdrs); |
119 | |
120 | /* |
121 | * Set xdrmem for client/server shared buffer |
122 | */ |
123 | xdrmem_create (xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE); |
124 | |
125 | /* |
126 | * create client handle |
127 | */ |
128 | client->cl_ops = (struct clnt_ops *) &client_ops; |
129 | client->cl_auth = authnone_create (); |
130 | return client; |
131 | } |
132 | libc_hidden_nolink_sunrpc (clntraw_create, GLIBC_2_0) |
133 | |
134 | static enum clnt_stat |
135 | clntraw_call (CLIENT *h, u_long proc, xdrproc_t xargs, caddr_t argsp, |
136 | xdrproc_t xresults, caddr_t resultsp, struct timeval timeout) |
137 | { |
138 | struct clntraw_private_s *clp = clntraw_private; |
139 | XDR *xdrs = &clp->xdr_stream; |
140 | struct rpc_msg msg; |
141 | enum clnt_stat status; |
142 | struct rpc_err error; |
143 | |
144 | if (clp == NULL) |
145 | return RPC_FAILED; |
146 | call_again: |
147 | /* |
148 | * send request |
149 | */ |
150 | xdrs->x_op = XDR_ENCODE; |
151 | XDR_SETPOS (xdrs, 0); |
152 | /* Just checking the union definition to access rm_xid is correct. */ |
153 | if (offsetof (struct rpc_msg, rm_xid) != 0) |
154 | abort (); |
155 | clp->mashl_callmsg.rm_xid++; |
156 | if ((!XDR_PUTBYTES (xdrs, clp->mashl_callmsg.msg, clp->mcnt)) || |
157 | (!XDR_PUTLONG (xdrs, (long *) &proc)) || |
158 | (!AUTH_MARSHALL (h->cl_auth, xdrs)) || |
159 | (!(*xargs) (xdrs, argsp))) |
160 | { |
161 | return (RPC_CANTENCODEARGS); |
162 | } |
163 | (void) XDR_GETPOS (xdrs); /* called just to cause overhead */ |
164 | |
165 | /* |
166 | * We have to call server input routine here because this is |
167 | * all going on in one process. Yuk. |
168 | */ |
169 | svc_getreq (1); |
170 | |
171 | /* |
172 | * get results |
173 | */ |
174 | xdrs->x_op = XDR_DECODE; |
175 | XDR_SETPOS (xdrs, 0); |
176 | msg.acpted_rply.ar_verf = _null_auth; |
177 | msg.acpted_rply.ar_results.where = resultsp; |
178 | msg.acpted_rply.ar_results.proc = xresults; |
179 | if (!xdr_replymsg (xdrs, &msg)) |
180 | return RPC_CANTDECODERES; |
181 | _seterr_reply (&msg, &error); |
182 | status = error.re_status; |
183 | |
184 | if (status == RPC_SUCCESS) |
185 | { |
186 | if (!AUTH_VALIDATE (h->cl_auth, &msg.acpted_rply.ar_verf)) |
187 | { |
188 | status = RPC_AUTHERROR; |
189 | } |
190 | } /* end successful completion */ |
191 | else |
192 | { |
193 | if (AUTH_REFRESH (h->cl_auth)) |
194 | goto call_again; |
195 | } /* end of unsuccessful completion */ |
196 | |
197 | if (status == RPC_SUCCESS) |
198 | { |
199 | if (!AUTH_VALIDATE (h->cl_auth, &msg.acpted_rply.ar_verf)) |
200 | { |
201 | status = RPC_AUTHERROR; |
202 | } |
203 | if (msg.acpted_rply.ar_verf.oa_base != NULL) |
204 | { |
205 | xdrs->x_op = XDR_FREE; |
206 | (void) xdr_opaque_auth (xdrs, &(msg.acpted_rply.ar_verf)); |
207 | } |
208 | } |
209 | |
210 | return status; |
211 | } |
212 | |
213 | static void |
214 | clntraw_geterr (CLIENT *cl, struct rpc_err *err) |
215 | { |
216 | } |
217 | |
218 | |
219 | static bool_t |
220 | clntraw_freeres (CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr) |
221 | { |
222 | struct clntraw_private_s *clp = clntraw_private; |
223 | XDR *xdrs = &clp->xdr_stream; |
224 | bool_t rval; |
225 | |
226 | if (clp == NULL) |
227 | { |
228 | rval = (bool_t) RPC_FAILED; |
229 | return rval; |
230 | } |
231 | xdrs->x_op = XDR_FREE; |
232 | return (*xdr_res) (xdrs, res_ptr); |
233 | } |
234 | |
235 | static void |
236 | clntraw_abort (void) |
237 | { |
238 | } |
239 | |
240 | static bool_t |
241 | clntraw_control (CLIENT *cl, int i, char *c) |
242 | { |
243 | return FALSE; |
244 | } |
245 | |
246 | static void |
247 | clntraw_destroy (CLIENT *cl) |
248 | { |
249 | } |
250 | |