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Commit | Line | Data |
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28f540f4 | 1 | /* |
a7ab6ec8 | 2 | * clnt_udp.c, Implements a UDP/IP based, client side RPC. |
c4029823 | 3 | * |
a7ab6ec8 | 4 | * Copyright (c) 2010, Oracle America, Inc. |
c4029823 | 5 | * |
a7ab6ec8 UD |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions are | |
8 | * met: | |
cb636bb2 | 9 | * |
a7ab6ec8 UD |
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. | |
28f540f4 | 19 | * |
a7ab6ec8 UD |
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. | |
28f540f4 RM |
32 | */ |
33 | ||
34 | #include <stdio.h> | |
e7fd8a39 | 35 | #include <unistd.h> |
4360eafd | 36 | #include <libintl.h> |
28f540f4 | 37 | #include <rpc/rpc.h> |
e7fd8a39 UD |
38 | #include <rpc/xdr.h> |
39 | #include <rpc/clnt.h> | |
099a6fbd | 40 | #include <sys/poll.h> |
28f540f4 RM |
41 | #include <sys/socket.h> |
42 | #include <sys/ioctl.h> | |
43 | #include <netdb.h> | |
44 | #include <errno.h> | |
e054f494 | 45 | #include <stdint.h> |
28f540f4 | 46 | #include <rpc/pmap_clnt.h> |
ea48e2c4 | 47 | #include <net/if.h> |
412c954a | 48 | #include <ifaddrs.h> |
3ce1f295 | 49 | #include <wchar.h> |
8ccf22f9 | 50 | #include <fcntl.h> |
28f540f4 | 51 | |
b1eab230 UD |
52 | #ifdef IP_RECVERR |
53 | #include <errqueue.h> | |
54 | #include <sys/uio.h> | |
55 | #endif | |
56 | ||
8ccf22f9 UD |
57 | #include <kernel-features.h> |
58 | ||
090ca000 | 59 | extern u_long _create_xid (void); |
28f540f4 RM |
60 | |
61 | /* | |
62 | * UDP bases client side rpc operations | |
63 | */ | |
e7fd8a39 UD |
64 | static enum clnt_stat clntudp_call (CLIENT *, u_long, xdrproc_t, caddr_t, |
65 | xdrproc_t, caddr_t, struct timeval); | |
66 | static void clntudp_abort (void); | |
67 | static void clntudp_geterr (CLIENT *, struct rpc_err *); | |
68 | static bool_t clntudp_freeres (CLIENT *, xdrproc_t, caddr_t); | |
69 | static bool_t clntudp_control (CLIENT *, int, char *); | |
70 | static void clntudp_destroy (CLIENT *); | |
28f540f4 | 71 | |
31d7b14c | 72 | static const struct clnt_ops udp_ops = |
e7fd8a39 UD |
73 | { |
74 | clntudp_call, | |
75 | clntudp_abort, | |
76 | clntudp_geterr, | |
77 | clntudp_freeres, | |
78 | clntudp_destroy, | |
79 | clntudp_control | |
28f540f4 RM |
80 | }; |
81 | ||
c4029823 | 82 | /* |
28f540f4 RM |
83 | * Private data kept per client handle |
84 | */ | |
e7fd8a39 UD |
85 | struct cu_data |
86 | { | |
87 | int cu_sock; | |
88 | bool_t cu_closeit; | |
89 | struct sockaddr_in cu_raddr; | |
90 | int cu_rlen; | |
91 | struct timeval cu_wait; | |
92 | struct timeval cu_total; | |
93 | struct rpc_err cu_error; | |
94 | XDR cu_outxdrs; | |
95 | u_int cu_xdrpos; | |
96 | u_int cu_sendsz; | |
97 | char *cu_outbuf; | |
98 | u_int cu_recvsz; | |
99 | char cu_inbuf[1]; | |
100 | }; | |
28f540f4 RM |
101 | |
102 | /* | |
103 | * Create a UDP based client handle. | |
104 | * If *sockp<0, *sockp is set to a newly created UPD socket. | |
105 | * If raddr->sin_port is 0 a binder on the remote machine | |
106 | * is consulted for the correct port number. | |
107 | * NB: It is the clients responsibility to close *sockp. | |
108 | * NB: The rpch->cl_auth is initialized to null authentication. | |
109 | * Caller may wish to set this something more useful. | |
110 | * | |
111 | * wait is the amount of time used between retransmitting a call if | |
6d52618b | 112 | * no response has been heard; retransmission occurs until the actual |
28f540f4 RM |
113 | * rpc call times out. |
114 | * | |
115 | * sendsz and recvsz are the maximum allowable packet sizes that can be | |
116 | * sent and received. | |
117 | */ | |
118 | CLIENT * | |
8ccf22f9 UD |
119 | __libc_clntudp_bufcreate (struct sockaddr_in *raddr, u_long program, |
120 | u_long version, struct timeval wait, int *sockp, | |
121 | u_int sendsz, u_int recvsz, int flags) | |
28f540f4 | 122 | { |
e7fd8a39 UD |
123 | CLIENT *cl; |
124 | struct cu_data *cu = NULL; | |
e7fd8a39 | 125 | struct rpc_msg call_msg; |
28f540f4 | 126 | |
e7fd8a39 | 127 | cl = (CLIENT *) mem_alloc (sizeof (CLIENT)); |
e7fd8a39 UD |
128 | sendsz = ((sendsz + 3) / 4) * 4; |
129 | recvsz = ((recvsz + 3) / 4) * 4; | |
130 | cu = (struct cu_data *) mem_alloc (sizeof (*cu) + sendsz + recvsz); | |
51028f34 | 131 | if (cl == NULL || cu == NULL) |
e7fd8a39 | 132 | { |
543cf8a9 | 133 | struct rpc_createerr *ce = &get_rpc_createerr (); |
1d20f7f8 UD |
134 | (void) __fxprintf (NULL, "%s: %s", |
135 | "clntudp_create", _("out of memory\n")); | |
543cf8a9 | 136 | ce->cf_stat = RPC_SYSTEMERROR; |
51028f34 | 137 | ce->cf_error.re_errno = ENOMEM; |
e7fd8a39 UD |
138 | goto fooy; |
139 | } | |
140 | cu->cu_outbuf = &cu->cu_inbuf[recvsz]; | |
28f540f4 | 141 | |
e7fd8a39 UD |
142 | if (raddr->sin_port == 0) |
143 | { | |
144 | u_short port; | |
145 | if ((port = | |
146 | pmap_getport (raddr, program, version, IPPROTO_UDP)) == 0) | |
147 | { | |
148 | goto fooy; | |
28f540f4 | 149 | } |
e7fd8a39 UD |
150 | raddr->sin_port = htons (port); |
151 | } | |
31d7b14c | 152 | cl->cl_ops = (struct clnt_ops *) &udp_ops; |
e7fd8a39 UD |
153 | cl->cl_private = (caddr_t) cu; |
154 | cu->cu_raddr = *raddr; | |
155 | cu->cu_rlen = sizeof (cu->cu_raddr); | |
156 | cu->cu_wait = wait; | |
157 | cu->cu_total.tv_sec = -1; | |
158 | cu->cu_total.tv_usec = -1; | |
159 | cu->cu_sendsz = sendsz; | |
160 | cu->cu_recvsz = recvsz; | |
090ca000 | 161 | call_msg.rm_xid = _create_xid (); |
e7fd8a39 UD |
162 | call_msg.rm_direction = CALL; |
163 | call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; | |
164 | call_msg.rm_call.cb_prog = program; | |
165 | call_msg.rm_call.cb_vers = version; | |
7b57bfe5 UD |
166 | xdrmem_create (&(cu->cu_outxdrs), cu->cu_outbuf, sendsz, XDR_ENCODE); |
167 | if (!xdr_callhdr (&(cu->cu_outxdrs), &call_msg)) | |
e7fd8a39 UD |
168 | { |
169 | goto fooy; | |
170 | } | |
171 | cu->cu_xdrpos = XDR_GETPOS (&(cu->cu_outxdrs)); | |
172 | if (*sockp < 0) | |
173 | { | |
52fb79d6 | 174 | *sockp = __socket (AF_INET, SOCK_DGRAM|SOCK_NONBLOCK|flags, IPPROTO_UDP); |
a1ffb40e | 175 | if (__glibc_unlikely (*sockp < 0)) |
e7fd8a39 | 176 | { |
543cf8a9 UD |
177 | struct rpc_createerr *ce = &get_rpc_createerr (); |
178 | ce->cf_stat = RPC_SYSTEMERROR; | |
179 | ce->cf_error.re_errno = errno; | |
e7fd8a39 | 180 | goto fooy; |
28f540f4 | 181 | } |
e7fd8a39 | 182 | /* attempt to bind to prov port */ |
a585ba22 | 183 | (void) bindresvport (*sockp, (struct sockaddr_in *) 0); |
b1eab230 UD |
184 | #ifdef IP_RECVERR |
185 | { | |
186 | int on = 1; | |
b2bffca2 | 187 | __setsockopt (*sockp, SOL_IP, IP_RECVERR, &on, sizeof(on)); |
b1eab230 UD |
188 | } |
189 | #endif | |
e7fd8a39 UD |
190 | cu->cu_closeit = TRUE; |
191 | } | |
192 | else | |
193 | { | |
194 | cu->cu_closeit = FALSE; | |
195 | } | |
196 | cu->cu_sock = *sockp; | |
7b57bfe5 | 197 | cl->cl_auth = authnone_create (); |
e7fd8a39 | 198 | return cl; |
28f540f4 | 199 | fooy: |
e7fd8a39 UD |
200 | if (cu) |
201 | mem_free ((caddr_t) cu, sizeof (*cu) + sendsz + recvsz); | |
202 | if (cl) | |
203 | mem_free ((caddr_t) cl, sizeof (CLIENT)); | |
204 | return (CLIENT *) NULL; | |
28f540f4 | 205 | } |
7b57bfe5 UD |
206 | #ifdef EXPORT_RPC_SYMBOLS |
207 | libc_hidden_def (__libc_clntudp_bufcreate) | |
208 | #else | |
021db4be | 209 | libc_hidden_nolink_sunrpc (__libc_clntudp_bufcreate, GLIBC_PRIVATE) |
7b57bfe5 | 210 | #endif |
8ccf22f9 UD |
211 | |
212 | CLIENT * | |
213 | clntudp_bufcreate (struct sockaddr_in *raddr, u_long program, u_long version, | |
214 | struct timeval wait, int *sockp, u_int sendsz, | |
215 | u_int recvsz) | |
216 | { | |
7b57bfe5 UD |
217 | return __libc_clntudp_bufcreate (raddr, program, version, wait, |
218 | sockp, sendsz, recvsz, 0); | |
8ccf22f9 | 219 | } |
021db4be | 220 | libc_hidden_nolink_sunrpc (clntudp_bufcreate, GLIBC_2_0) |
28f540f4 RM |
221 | |
222 | CLIENT * | |
f63f2bfd JM |
223 | clntudp_create (struct sockaddr_in *raddr, u_long program, u_long version, |
224 | struct timeval wait, int *sockp) | |
28f540f4 | 225 | { |
7b57bfe5 UD |
226 | return __libc_clntudp_bufcreate (raddr, program, version, wait, |
227 | sockp, UDPMSGSIZE, UDPMSGSIZE, 0); | |
28f540f4 | 228 | } |
7b57bfe5 UD |
229 | #ifdef EXPORT_RPC_SYMBOLS |
230 | libc_hidden_def (clntudp_create) | |
231 | #else | |
021db4be | 232 | libc_hidden_nolink_sunrpc (clntudp_create, GLIBC_2_0) |
7b57bfe5 | 233 | #endif |
28f540f4 | 234 | |
ea48e2c4 UD |
235 | static int |
236 | is_network_up (int sock) | |
237 | { | |
412c954a | 238 | struct ifaddrs *ifa; |
ea48e2c4 | 239 | |
412c954a UD |
240 | if (getifaddrs (&ifa) != 0) |
241 | return 0; | |
242 | ||
243 | struct ifaddrs *run = ifa; | |
244 | while (run != NULL) | |
ea48e2c4 | 245 | { |
412c954a | 246 | if ((run->ifa_flags & IFF_UP) != 0 |
f7e7a396 | 247 | && run->ifa_addr != NULL |
412c954a UD |
248 | && run->ifa_addr->sa_family == AF_INET) |
249 | break; | |
ea48e2c4 | 250 | |
412c954a | 251 | run = run->ifa_next; |
ea48e2c4 | 252 | } |
412c954a UD |
253 | |
254 | freeifaddrs (ifa); | |
255 | ||
256 | return run != NULL; | |
ea48e2c4 UD |
257 | } |
258 | ||
c4029823 | 259 | static enum clnt_stat |
85231522 JM |
260 | clntudp_call (/* client handle */ |
261 | CLIENT *cl, | |
262 | /* procedure number */ | |
263 | u_long proc, | |
264 | /* xdr routine for args */ | |
265 | xdrproc_t xargs, | |
266 | /* pointer to args */ | |
267 | caddr_t argsp, | |
268 | /* xdr routine for results */ | |
269 | xdrproc_t xresults, | |
270 | /* pointer to results */ | |
271 | caddr_t resultsp, | |
272 | /* seconds to wait before giving up */ | |
273 | struct timeval utimeout) | |
28f540f4 | 274 | { |
e7fd8a39 UD |
275 | struct cu_data *cu = (struct cu_data *) cl->cl_private; |
276 | XDR *xdrs; | |
1522c368 | 277 | int outlen = 0; |
e7fd8a39 | 278 | int inlen; |
41df5ed4 | 279 | socklen_t fromlen; |
099a6fbd UD |
280 | struct pollfd fd; |
281 | int milliseconds = (cu->cu_wait.tv_sec * 1000) + | |
282 | (cu->cu_wait.tv_usec / 1000); | |
e7fd8a39 UD |
283 | struct sockaddr_in from; |
284 | struct rpc_msg reply_msg; | |
285 | XDR reply_xdrs; | |
286 | struct timeval time_waited; | |
287 | bool_t ok; | |
288 | int nrefreshes = 2; /* number of times to refresh cred */ | |
289 | struct timeval timeout; | |
ea48e2c4 | 290 | int anyup; /* any network interface up */ |
28f540f4 | 291 | |
e7fd8a39 UD |
292 | if (cu->cu_total.tv_usec == -1) |
293 | { | |
294 | timeout = utimeout; /* use supplied timeout */ | |
295 | } | |
296 | else | |
297 | { | |
298 | timeout = cu->cu_total; /* use default timeout */ | |
299 | } | |
28f540f4 | 300 | |
e7fd8a39 UD |
301 | time_waited.tv_sec = 0; |
302 | time_waited.tv_usec = 0; | |
28f540f4 | 303 | call_again: |
e7fd8a39 | 304 | xdrs = &(cu->cu_outxdrs); |
60c96635 UD |
305 | if (xargs == NULL) |
306 | goto get_reply; | |
e7fd8a39 UD |
307 | xdrs->x_op = XDR_ENCODE; |
308 | XDR_SETPOS (xdrs, cu->cu_xdrpos); | |
309 | /* | |
310 | * the transaction is the first thing in the out buffer | |
311 | */ | |
d6f6ffa1 | 312 | (*(uint32_t *) (cu->cu_outbuf))++; |
e7fd8a39 UD |
313 | if ((!XDR_PUTLONG (xdrs, (long *) &proc)) || |
314 | (!AUTH_MARSHALL (cl->cl_auth, xdrs)) || | |
315 | (!(*xargs) (xdrs, argsp))) | |
316 | return (cu->cu_error.re_status = RPC_CANTENCODEARGS); | |
317 | outlen = (int) XDR_GETPOS (xdrs); | |
28f540f4 RM |
318 | |
319 | send_again: | |
b2bffca2 UD |
320 | if (__sendto (cu->cu_sock, cu->cu_outbuf, outlen, 0, |
321 | (struct sockaddr *) &(cu->cu_raddr), cu->cu_rlen) | |
e7fd8a39 UD |
322 | != outlen) |
323 | { | |
324 | cu->cu_error.re_errno = errno; | |
325 | return (cu->cu_error.re_status = RPC_CANTSEND); | |
326 | } | |
28f540f4 | 327 | |
e7fd8a39 UD |
328 | /* |
329 | * Hack to provide rpc-based message passing | |
330 | */ | |
331 | if (timeout.tv_sec == 0 && timeout.tv_usec == 0) | |
332 | { | |
333 | return (cu->cu_error.re_status = RPC_TIMEDOUT); | |
334 | } | |
60c96635 | 335 | get_reply: |
e7fd8a39 UD |
336 | /* |
337 | * sub-optimal code appears here because we have | |
338 | * some clock time to spare while the packets are in flight. | |
339 | * (We assume that this is actually only executed once.) | |
340 | */ | |
341 | reply_msg.acpted_rply.ar_verf = _null_auth; | |
342 | reply_msg.acpted_rply.ar_results.where = resultsp; | |
343 | reply_msg.acpted_rply.ar_results.proc = xresults; | |
099a6fbd UD |
344 | fd.fd = cu->cu_sock; |
345 | fd.events = POLLIN; | |
c556351f | 346 | anyup = 0; |
e7fd8a39 UD |
347 | for (;;) |
348 | { | |
ea48e2c4 | 349 | switch (__poll (&fd, 1, milliseconds)) |
e7fd8a39 | 350 | { |
28f540f4 | 351 | |
e7fd8a39 | 352 | case 0: |
ea48e2c4 UD |
353 | if (anyup == 0) |
354 | { | |
355 | anyup = is_network_up (cu->cu_sock); | |
356 | if (!anyup) | |
357 | return (cu->cu_error.re_status = RPC_CANTRECV); | |
358 | } | |
359 | ||
e7fd8a39 UD |
360 | time_waited.tv_sec += cu->cu_wait.tv_sec; |
361 | time_waited.tv_usec += cu->cu_wait.tv_usec; | |
362 | while (time_waited.tv_usec >= 1000000) | |
363 | { | |
364 | time_waited.tv_sec++; | |
365 | time_waited.tv_usec -= 1000000; | |
366 | } | |
367 | if ((time_waited.tv_sec < timeout.tv_sec) || | |
368 | ((time_waited.tv_sec == timeout.tv_sec) && | |
369 | (time_waited.tv_usec < timeout.tv_usec))) | |
370 | goto send_again; | |
371 | return (cu->cu_error.re_status = RPC_TIMEDOUT); | |
28f540f4 | 372 | |
e7fd8a39 UD |
373 | /* |
374 | * buggy in other cases because time_waited is not being | |
375 | * updated. | |
376 | */ | |
377 | case -1: | |
378 | if (errno == EINTR) | |
379 | continue; | |
380 | cu->cu_error.re_errno = errno; | |
381 | return (cu->cu_error.re_status = RPC_CANTRECV); | |
28f540f4 | 382 | } |
b1eab230 UD |
383 | #ifdef IP_RECVERR |
384 | if (fd.revents & POLLERR) | |
385 | { | |
386 | struct msghdr msg; | |
387 | struct cmsghdr *cmsg; | |
388 | struct sock_extended_err *e; | |
389 | struct sockaddr_in err_addr; | |
390 | struct iovec iov; | |
bc779a1a | 391 | char *cbuf = malloc (outlen + 256); |
b1eab230 UD |
392 | int ret; |
393 | ||
bc779a1a FW |
394 | if (cbuf == NULL) |
395 | { | |
396 | cu->cu_error.re_errno = errno; | |
397 | return (cu->cu_error.re_status = RPC_CANTRECV); | |
398 | } | |
399 | ||
b1eab230 UD |
400 | iov.iov_base = cbuf + 256; |
401 | iov.iov_len = outlen; | |
402 | msg.msg_name = (void *) &err_addr; | |
403 | msg.msg_namelen = sizeof (err_addr); | |
404 | msg.msg_iov = &iov; | |
405 | msg.msg_iovlen = 1; | |
406 | msg.msg_flags = 0; | |
407 | msg.msg_control = cbuf; | |
408 | msg.msg_controllen = 256; | |
b2bffca2 | 409 | ret = __recvmsg (cu->cu_sock, &msg, MSG_ERRQUEUE); |
b1eab230 UD |
410 | if (ret >= 0 |
411 | && memcmp (cbuf + 256, cu->cu_outbuf, ret) == 0 | |
412 | && (msg.msg_flags & MSG_ERRQUEUE) | |
413 | && ((msg.msg_namelen == 0 | |
414 | && ret >= 12) | |
415 | || (msg.msg_namelen == sizeof (err_addr) | |
416 | && err_addr.sin_family == AF_INET | |
417 | && memcmp (&err_addr.sin_addr, &cu->cu_raddr.sin_addr, | |
418 | sizeof (err_addr.sin_addr)) == 0 | |
419 | && err_addr.sin_port == cu->cu_raddr.sin_port))) | |
420 | for (cmsg = CMSG_FIRSTHDR (&msg); cmsg; | |
421 | cmsg = CMSG_NXTHDR (&msg, cmsg)) | |
422 | if (cmsg->cmsg_level == SOL_IP && cmsg->cmsg_type == IP_RECVERR) | |
423 | { | |
bc779a1a | 424 | free (cbuf); |
b1eab230 UD |
425 | e = (struct sock_extended_err *) CMSG_DATA(cmsg); |
426 | cu->cu_error.re_errno = e->ee_errno; | |
427 | return (cu->cu_error.re_status = RPC_CANTRECV); | |
428 | } | |
bc779a1a | 429 | free (cbuf); |
b1eab230 UD |
430 | } |
431 | #endif | |
e7fd8a39 UD |
432 | do |
433 | { | |
434 | fromlen = sizeof (struct sockaddr); | |
b2bffca2 | 435 | inlen = __recvfrom (cu->cu_sock, cu->cu_inbuf, |
7e9f348f | 436 | (int) cu->cu_recvsz, MSG_DONTWAIT, |
b2bffca2 | 437 | (struct sockaddr *) &from, &fromlen); |
e7fd8a39 UD |
438 | } |
439 | while (inlen < 0 && errno == EINTR); | |
440 | if (inlen < 0) | |
441 | { | |
442 | if (errno == EWOULDBLOCK) | |
443 | continue; | |
444 | cu->cu_error.re_errno = errno; | |
445 | return (cu->cu_error.re_status = RPC_CANTRECV); | |
28f540f4 | 446 | } |
e7fd8a39 UD |
447 | if (inlen < 4) |
448 | continue; | |
4c66860c UD |
449 | |
450 | /* see if reply transaction id matches sent id. | |
7b57bfe5 | 451 | Don't do this if we only wait for a replay */ |
4c66860c | 452 | if (xargs != NULL |
4efbd5cb | 453 | && memcmp (cu->cu_inbuf, cu->cu_outbuf, sizeof (u_int32_t)) != 0) |
e7fd8a39 UD |
454 | continue; |
455 | /* we now assume we have the proper reply */ | |
456 | break; | |
457 | } | |
458 | ||
459 | /* | |
460 | * now decode and validate the response | |
461 | */ | |
7b57bfe5 UD |
462 | xdrmem_create (&reply_xdrs, cu->cu_inbuf, (u_int) inlen, XDR_DECODE); |
463 | ok = xdr_replymsg (&reply_xdrs, &reply_msg); | |
e7fd8a39 UD |
464 | /* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */ |
465 | if (ok) | |
466 | { | |
467 | _seterr_reply (&reply_msg, &(cu->cu_error)); | |
468 | if (cu->cu_error.re_status == RPC_SUCCESS) | |
469 | { | |
470 | if (!AUTH_VALIDATE (cl->cl_auth, | |
471 | &reply_msg.acpted_rply.ar_verf)) | |
472 | { | |
473 | cu->cu_error.re_status = RPC_AUTHERROR; | |
474 | cu->cu_error.re_why = AUTH_INVALIDRESP; | |
475 | } | |
476 | if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) | |
477 | { | |
478 | xdrs->x_op = XDR_FREE; | |
7b57bfe5 | 479 | (void) xdr_opaque_auth (xdrs, &(reply_msg.acpted_rply.ar_verf)); |
e7fd8a39 UD |
480 | } |
481 | } /* end successful completion */ | |
482 | else | |
483 | { | |
484 | /* maybe our credentials need to be refreshed ... */ | |
485 | if (nrefreshes > 0 && AUTH_REFRESH (cl->cl_auth)) | |
486 | { | |
487 | nrefreshes--; | |
488 | goto call_again; | |
489 | } | |
490 | } /* end of unsuccessful completion */ | |
491 | } /* end of valid reply message */ | |
492 | else | |
493 | { | |
494 | cu->cu_error.re_status = RPC_CANTDECODERES; | |
495 | } | |
496 | return cu->cu_error.re_status; | |
28f540f4 RM |
497 | } |
498 | ||
499 | static void | |
e7fd8a39 | 500 | clntudp_geterr (CLIENT *cl, struct rpc_err *errp) |
28f540f4 | 501 | { |
e7fd8a39 | 502 | struct cu_data *cu = (struct cu_data *) cl->cl_private; |
28f540f4 | 503 | |
e7fd8a39 | 504 | *errp = cu->cu_error; |
28f540f4 RM |
505 | } |
506 | ||
507 | ||
508 | static bool_t | |
e7fd8a39 | 509 | clntudp_freeres (CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr) |
28f540f4 | 510 | { |
e7fd8a39 UD |
511 | struct cu_data *cu = (struct cu_data *) cl->cl_private; |
512 | XDR *xdrs = &(cu->cu_outxdrs); | |
28f540f4 | 513 | |
e7fd8a39 UD |
514 | xdrs->x_op = XDR_FREE; |
515 | return (*xdr_res) (xdrs, res_ptr); | |
28f540f4 RM |
516 | } |
517 | ||
c4029823 | 518 | static void |
e7fd8a39 | 519 | clntudp_abort (void) |
28f540f4 RM |
520 | { |
521 | } | |
522 | ||
523 | static bool_t | |
e7fd8a39 | 524 | clntudp_control (CLIENT *cl, int request, char *info) |
28f540f4 | 525 | { |
e7fd8a39 | 526 | struct cu_data *cu = (struct cu_data *) cl->cl_private; |
fb1ae1ee JM |
527 | u_long ul; |
528 | u_int32_t ui32; | |
28f540f4 | 529 | |
e7fd8a39 UD |
530 | switch (request) |
531 | { | |
26a60f90 UD |
532 | case CLSET_FD_CLOSE: |
533 | cu->cu_closeit = TRUE; | |
534 | break; | |
535 | case CLSET_FD_NCLOSE: | |
536 | cu->cu_closeit = FALSE; | |
537 | break; | |
e7fd8a39 UD |
538 | case CLSET_TIMEOUT: |
539 | cu->cu_total = *(struct timeval *) info; | |
540 | break; | |
541 | case CLGET_TIMEOUT: | |
542 | *(struct timeval *) info = cu->cu_total; | |
543 | break; | |
544 | case CLSET_RETRY_TIMEOUT: | |
545 | cu->cu_wait = *(struct timeval *) info; | |
546 | break; | |
547 | case CLGET_RETRY_TIMEOUT: | |
548 | *(struct timeval *) info = cu->cu_wait; | |
549 | break; | |
550 | case CLGET_SERVER_ADDR: | |
551 | *(struct sockaddr_in *) info = cu->cu_raddr; | |
552 | break; | |
26a60f90 UD |
553 | case CLGET_FD: |
554 | *(int *)info = cu->cu_sock; | |
555 | break; | |
556 | case CLGET_XID: | |
557 | /* | |
558 | * use the knowledge that xid is the | |
559 | * first element in the call structure *. | |
560 | * This will get the xid of the PREVIOUS call | |
561 | */ | |
fb1ae1ee JM |
562 | memcpy (&ui32, cu->cu_outbuf, sizeof (ui32)); |
563 | ul = ntohl (ui32); | |
564 | memcpy (info, &ul, sizeof (ul)); | |
26a60f90 UD |
565 | break; |
566 | case CLSET_XID: | |
567 | /* This will set the xid of the NEXT call */ | |
fb1ae1ee JM |
568 | memcpy (&ul, info, sizeof (ul)); |
569 | ui32 = htonl (ul - 1); | |
570 | memcpy (cu->cu_outbuf, &ui32, sizeof (ui32)); | |
26a60f90 | 571 | /* decrement by 1 as clntudp_call() increments once */ |
f0ccf6ea | 572 | break; |
26a60f90 UD |
573 | case CLGET_VERS: |
574 | /* | |
575 | * This RELIES on the information that, in the call body, | |
576 | * the version number field is the fifth field from the | |
6f65e668 | 577 | * beginning of the RPC header. MUST be changed if the |
26a60f90 UD |
578 | * call_struct is changed |
579 | */ | |
fb1ae1ee JM |
580 | memcpy (&ui32, cu->cu_outbuf + 4 * BYTES_PER_XDR_UNIT, sizeof (ui32)); |
581 | ul = ntohl (ui32); | |
582 | memcpy (info, &ul, sizeof (ul)); | |
26a60f90 UD |
583 | break; |
584 | case CLSET_VERS: | |
fb1ae1ee JM |
585 | memcpy (&ul, info, sizeof (ul)); |
586 | ui32 = htonl (ul); | |
587 | memcpy (cu->cu_outbuf + 4 * BYTES_PER_XDR_UNIT, &ui32, sizeof (ui32)); | |
26a60f90 UD |
588 | break; |
589 | case CLGET_PROG: | |
590 | /* | |
591 | * This RELIES on the information that, in the call body, | |
592 | * the program number field is the field from the | |
6f65e668 | 593 | * beginning of the RPC header. MUST be changed if the |
26a60f90 UD |
594 | * call_struct is changed |
595 | */ | |
fb1ae1ee JM |
596 | memcpy (&ui32, cu->cu_outbuf + 3 * BYTES_PER_XDR_UNIT, sizeof (ui32)); |
597 | ul = ntohl (ui32); | |
598 | memcpy (info, &ul, sizeof (ul)); | |
26a60f90 UD |
599 | break; |
600 | case CLSET_PROG: | |
fb1ae1ee JM |
601 | memcpy (&ul, info, sizeof (ul)); |
602 | ui32 = htonl (ul); | |
603 | memcpy (cu->cu_outbuf + 3 * BYTES_PER_XDR_UNIT, &ui32, sizeof (ui32)); | |
26a60f90 UD |
604 | break; |
605 | /* The following are only possible with TI-RPC */ | |
606 | case CLGET_SVC_ADDR: | |
607 | case CLSET_SVC_ADDR: | |
608 | case CLSET_PUSH_TIMOD: | |
609 | case CLSET_POP_TIMOD: | |
e7fd8a39 UD |
610 | default: |
611 | return FALSE; | |
612 | } | |
613 | return TRUE; | |
28f540f4 | 614 | } |
c4029823 | 615 | |
28f540f4 | 616 | static void |
e7fd8a39 | 617 | clntudp_destroy (CLIENT *cl) |
28f540f4 | 618 | { |
e7fd8a39 | 619 | struct cu_data *cu = (struct cu_data *) cl->cl_private; |
28f540f4 | 620 | |
e7fd8a39 UD |
621 | if (cu->cu_closeit) |
622 | { | |
50304ef0 | 623 | (void) __close (cu->cu_sock); |
e7fd8a39 UD |
624 | } |
625 | XDR_DESTROY (&(cu->cu_outxdrs)); | |
626 | mem_free ((caddr_t) cu, (sizeof (*cu) + cu->cu_sendsz + cu->cu_recvsz)); | |
627 | mem_free ((caddr_t) cl, sizeof (CLIENT)); | |
28f540f4 | 628 | } |