1 |
30 |
unneback |
/*
|
2 |
|
|
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
|
3 |
|
|
* unrestricted use provided that this legend is included on all tape
|
4 |
|
|
* media and as a part of the software program in whole or part. Users
|
5 |
|
|
* may copy or modify Sun RPC without charge, but are not authorized
|
6 |
|
|
* to license or distribute it to anyone else except as part of a product or
|
7 |
|
|
* program developed by the user.
|
8 |
|
|
*
|
9 |
|
|
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
|
10 |
|
|
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
|
11 |
|
|
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
|
12 |
|
|
*
|
13 |
|
|
* Sun RPC is provided with no support and without any obligation on the
|
14 |
|
|
* part of Sun Microsystems, Inc. to assist in its use, correction,
|
15 |
|
|
* modification or enhancement.
|
16 |
|
|
*
|
17 |
|
|
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
|
18 |
|
|
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
|
19 |
|
|
* OR ANY PART THEREOF.
|
20 |
|
|
*
|
21 |
|
|
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
|
22 |
|
|
* or profits or other special, indirect and consequential damages, even if
|
23 |
|
|
* Sun has been advised of the possibility of such damages.
|
24 |
|
|
*
|
25 |
|
|
* Sun Microsystems, Inc.
|
26 |
|
|
* 2550 Garcia Avenue
|
27 |
|
|
* Mountain View, California 94043
|
28 |
|
|
*/
|
29 |
|
|
|
30 |
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
31 |
|
|
/*static char *sccsid = "from: @(#)clnt_tcp.c 1.37 87/10/05 Copyr 1984 Sun Micro";*/
|
32 |
|
|
/*static char *sccsid = "from: @(#)clnt_tcp.c 2.2 88/08/01 4.0 RPCSRC";*/
|
33 |
|
|
static char *rcsid = "$FreeBSD: src/lib/libc/rpc/clnt_tcp.c,v 1.14 2000/01/27 23:06:36 jasone Exp $";
|
34 |
|
|
#endif
|
35 |
|
|
|
36 |
|
|
/*
|
37 |
|
|
* clnt_tcp.c, Implements a TCP/IP based, client side RPC.
|
38 |
|
|
*
|
39 |
|
|
* Copyright (C) 1984, Sun Microsystems, Inc.
|
40 |
|
|
*
|
41 |
|
|
* TCP based RPC supports 'batched calls'.
|
42 |
|
|
* A sequence of calls may be batched-up in a send buffer. The rpc call
|
43 |
|
|
* return immediately to the client even though the call was not necessarily
|
44 |
|
|
* sent. The batching occurs if the results' xdr routine is NULL (0) AND
|
45 |
|
|
* the rpc timeout value is zero (see clnt.h, rpc).
|
46 |
|
|
*
|
47 |
|
|
* Clients should NOT casually batch calls that in fact return results; that is,
|
48 |
|
|
* the server side should be aware that a call is batched and not produce any
|
49 |
|
|
* return message. Batched calls that produce many result messages can
|
50 |
|
|
* deadlock (netlock) the client and the server....
|
51 |
|
|
*
|
52 |
|
|
* Now go hang yourself.
|
53 |
|
|
*/
|
54 |
|
|
|
55 |
|
|
#include <stdio.h>
|
56 |
|
|
#include <stdlib.h>
|
57 |
|
|
#include <unistd.h>
|
58 |
|
|
#include <string.h>
|
59 |
|
|
#include <rpc/rpc.h>
|
60 |
|
|
#include <sys/socket.h>
|
61 |
|
|
#include <netdb.h>
|
62 |
|
|
#include <errno.h>
|
63 |
|
|
#include <rpc/pmap_clnt.h>
|
64 |
|
|
|
65 |
|
|
#define MCALL_MSG_SIZE 24
|
66 |
|
|
|
67 |
|
|
static int readtcp();
|
68 |
|
|
static int writetcp();
|
69 |
|
|
|
70 |
|
|
static enum clnt_stat clnttcp_call();
|
71 |
|
|
static void clnttcp_abort();
|
72 |
|
|
static void clnttcp_geterr();
|
73 |
|
|
static bool_t clnttcp_freeres();
|
74 |
|
|
static bool_t clnttcp_control();
|
75 |
|
|
static void clnttcp_destroy();
|
76 |
|
|
|
77 |
|
|
static struct clnt_ops tcp_ops = {
|
78 |
|
|
clnttcp_call,
|
79 |
|
|
clnttcp_abort,
|
80 |
|
|
clnttcp_geterr,
|
81 |
|
|
clnttcp_freeres,
|
82 |
|
|
clnttcp_destroy,
|
83 |
|
|
clnttcp_control
|
84 |
|
|
};
|
85 |
|
|
|
86 |
|
|
struct ct_data {
|
87 |
|
|
int ct_sock;
|
88 |
|
|
bool_t ct_closeit;
|
89 |
|
|
struct timeval ct_wait;
|
90 |
|
|
bool_t ct_waitset; /* wait set by clnt_control? */
|
91 |
|
|
struct sockaddr_in ct_addr;
|
92 |
|
|
struct rpc_err ct_error;
|
93 |
|
|
char ct_mcall[MCALL_MSG_SIZE]; /* marshalled callmsg */
|
94 |
|
|
u_int ct_mpos; /* pos after marshal */
|
95 |
|
|
XDR ct_xdrs;
|
96 |
|
|
};
|
97 |
|
|
|
98 |
|
|
/*
|
99 |
|
|
* Create a client handle for a tcp/ip connection.
|
100 |
|
|
* If *sockp<0, *sockp is set to a newly created TCP socket and it is
|
101 |
|
|
* connected to raddr. If *sockp non-negative then
|
102 |
|
|
* raddr is ignored. The rpc/tcp package does buffering
|
103 |
|
|
* similar to stdio, so the client must pick send and receive buffer sizes,];
|
104 |
|
|
* 0 => use the default.
|
105 |
|
|
* If raddr->sin_port is 0, then a binder on the remote machine is
|
106 |
|
|
* consulted for the right port number.
|
107 |
|
|
* NB: *sockp is copied into a private area.
|
108 |
|
|
* NB: It is the clients responsibility to close *sockp.
|
109 |
|
|
* NB: The rpch->cl_auth is set null authentication. Caller may wish to set this
|
110 |
|
|
* something more useful.
|
111 |
|
|
*/
|
112 |
|
|
CLIENT *
|
113 |
|
|
clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz)
|
114 |
|
|
struct sockaddr_in *raddr;
|
115 |
|
|
u_long prog;
|
116 |
|
|
u_long vers;
|
117 |
|
|
register int *sockp;
|
118 |
|
|
u_int sendsz;
|
119 |
|
|
u_int recvsz;
|
120 |
|
|
{
|
121 |
|
|
CLIENT *h;
|
122 |
|
|
register struct ct_data *ct = NULL;
|
123 |
|
|
struct timeval now;
|
124 |
|
|
struct rpc_msg call_msg;
|
125 |
|
|
static u_int32_t disrupt;
|
126 |
|
|
|
127 |
|
|
if (disrupt == 0)
|
128 |
|
|
disrupt = (u_int32_t)(long)raddr;
|
129 |
|
|
|
130 |
|
|
h = (CLIENT *)mem_alloc(sizeof(*h));
|
131 |
|
|
if (h == NULL) {
|
132 |
|
|
(void)fprintf(stderr, "clnttcp_create: out of memory\n");
|
133 |
|
|
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
|
134 |
|
|
rpc_createerr.cf_error.re_errno = errno;
|
135 |
|
|
goto fooy;
|
136 |
|
|
}
|
137 |
|
|
ct = (struct ct_data *)mem_alloc(sizeof(*ct));
|
138 |
|
|
if (ct == NULL) {
|
139 |
|
|
(void)fprintf(stderr, "clnttcp_create: out of memory\n");
|
140 |
|
|
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
|
141 |
|
|
rpc_createerr.cf_error.re_errno = errno;
|
142 |
|
|
goto fooy;
|
143 |
|
|
}
|
144 |
|
|
|
145 |
|
|
/*
|
146 |
|
|
* If no port number given ask the pmap for one
|
147 |
|
|
*/
|
148 |
|
|
if (raddr->sin_port == 0) {
|
149 |
|
|
u_short port;
|
150 |
|
|
if ((port = pmap_getport(raddr, prog, vers, IPPROTO_TCP)) == 0) {
|
151 |
|
|
mem_free((caddr_t)ct, sizeof(struct ct_data));
|
152 |
|
|
mem_free((caddr_t)h, sizeof(CLIENT));
|
153 |
|
|
return ((CLIENT *)NULL);
|
154 |
|
|
}
|
155 |
|
|
raddr->sin_port = htons(port);
|
156 |
|
|
}
|
157 |
|
|
|
158 |
|
|
/*
|
159 |
|
|
* If no socket given, open one
|
160 |
|
|
*/
|
161 |
|
|
if (*sockp < 0) {
|
162 |
|
|
*sockp = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
|
163 |
|
|
(void)bindresvport(*sockp, (struct sockaddr_in *)0);
|
164 |
|
|
if ((*sockp < 0)
|
165 |
|
|
|| (connect(*sockp, (struct sockaddr *)raddr,
|
166 |
|
|
sizeof(*raddr)) < 0)) {
|
167 |
|
|
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
|
168 |
|
|
rpc_createerr.cf_error.re_errno = errno;
|
169 |
|
|
if (*sockp != -1)
|
170 |
|
|
(void)_close(*sockp);
|
171 |
|
|
goto fooy;
|
172 |
|
|
}
|
173 |
|
|
ct->ct_closeit = TRUE;
|
174 |
|
|
} else {
|
175 |
|
|
ct->ct_closeit = FALSE;
|
176 |
|
|
}
|
177 |
|
|
|
178 |
|
|
/*
|
179 |
|
|
* Set up private data struct
|
180 |
|
|
*/
|
181 |
|
|
ct->ct_sock = *sockp;
|
182 |
|
|
ct->ct_wait.tv_usec = 0;
|
183 |
|
|
ct->ct_waitset = FALSE;
|
184 |
|
|
ct->ct_addr = *raddr;
|
185 |
|
|
|
186 |
|
|
/*
|
187 |
|
|
* Initialize call message
|
188 |
|
|
*/
|
189 |
|
|
(void)gettimeofday(&now, (struct timezone *)0);
|
190 |
|
|
call_msg.rm_xid = (++disrupt) ^ getpid() ^ now.tv_sec ^ now.tv_usec;
|
191 |
|
|
call_msg.rm_direction = CALL;
|
192 |
|
|
call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
|
193 |
|
|
call_msg.rm_call.cb_prog = prog;
|
194 |
|
|
call_msg.rm_call.cb_vers = vers;
|
195 |
|
|
|
196 |
|
|
/*
|
197 |
|
|
* pre-serialize the static part of the call msg and stash it away
|
198 |
|
|
*/
|
199 |
|
|
xdrmem_create(&(ct->ct_xdrs), ct->ct_mcall, MCALL_MSG_SIZE,
|
200 |
|
|
XDR_ENCODE);
|
201 |
|
|
if (! xdr_callhdr(&(ct->ct_xdrs), &call_msg)) {
|
202 |
|
|
if (ct->ct_closeit) {
|
203 |
|
|
(void)_close(*sockp);
|
204 |
|
|
}
|
205 |
|
|
goto fooy;
|
206 |
|
|
}
|
207 |
|
|
ct->ct_mpos = XDR_GETPOS(&(ct->ct_xdrs));
|
208 |
|
|
XDR_DESTROY(&(ct->ct_xdrs));
|
209 |
|
|
|
210 |
|
|
/*
|
211 |
|
|
* Create a client handle which uses xdrrec for serialization
|
212 |
|
|
* and authnone for authentication.
|
213 |
|
|
*/
|
214 |
|
|
xdrrec_create(&(ct->ct_xdrs), sendsz, recvsz,
|
215 |
|
|
(caddr_t)ct, readtcp, writetcp);
|
216 |
|
|
h->cl_ops = &tcp_ops;
|
217 |
|
|
h->cl_private = (caddr_t) ct;
|
218 |
|
|
h->cl_auth = authnone_create();
|
219 |
|
|
return (h);
|
220 |
|
|
|
221 |
|
|
fooy:
|
222 |
|
|
/*
|
223 |
|
|
* Something goofed, free stuff and barf
|
224 |
|
|
*/
|
225 |
|
|
if (ct)
|
226 |
|
|
mem_free((caddr_t)ct, sizeof(struct ct_data));
|
227 |
|
|
if (h)
|
228 |
|
|
mem_free((caddr_t)h, sizeof(CLIENT));
|
229 |
|
|
return ((CLIENT *)NULL);
|
230 |
|
|
}
|
231 |
|
|
|
232 |
|
|
static enum clnt_stat
|
233 |
|
|
clnttcp_call(h, proc, xdr_args, args_ptr, xdr_results, results_ptr, timeout)
|
234 |
|
|
register CLIENT *h;
|
235 |
|
|
u_long proc;
|
236 |
|
|
xdrproc_t xdr_args;
|
237 |
|
|
caddr_t args_ptr;
|
238 |
|
|
xdrproc_t xdr_results;
|
239 |
|
|
caddr_t results_ptr;
|
240 |
|
|
struct timeval timeout;
|
241 |
|
|
{
|
242 |
|
|
register struct ct_data *ct = (struct ct_data *) h->cl_private;
|
243 |
|
|
register XDR *xdrs = &(ct->ct_xdrs);
|
244 |
|
|
struct rpc_msg reply_msg;
|
245 |
|
|
u_long x_id;
|
246 |
|
|
u_int32_t *msg_x_id = (u_int32_t *)(ct->ct_mcall); /* yuk */
|
247 |
|
|
register bool_t shipnow;
|
248 |
|
|
int refreshes = 2;
|
249 |
|
|
|
250 |
|
|
if (!ct->ct_waitset) {
|
251 |
|
|
ct->ct_wait = timeout;
|
252 |
|
|
}
|
253 |
|
|
|
254 |
|
|
shipnow =
|
255 |
|
|
(xdr_results == (xdrproc_t)0 && timeout.tv_sec == 0
|
256 |
|
|
&& timeout.tv_usec == 0) ? FALSE : TRUE;
|
257 |
|
|
|
258 |
|
|
call_again:
|
259 |
|
|
xdrs->x_op = XDR_ENCODE;
|
260 |
|
|
ct->ct_error.re_status = RPC_SUCCESS;
|
261 |
|
|
x_id = ntohl(--(*msg_x_id));
|
262 |
|
|
if ((! XDR_PUTBYTES(xdrs, ct->ct_mcall, ct->ct_mpos)) ||
|
263 |
|
|
(! XDR_PUTLONG(xdrs, (long *)&proc)) ||
|
264 |
|
|
(! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
|
265 |
|
|
(! (*xdr_args)(xdrs, args_ptr))) {
|
266 |
|
|
if (ct->ct_error.re_status == RPC_SUCCESS)
|
267 |
|
|
ct->ct_error.re_status = RPC_CANTENCODEARGS;
|
268 |
|
|
(void)xdrrec_endofrecord(xdrs, TRUE);
|
269 |
|
|
return (ct->ct_error.re_status);
|
270 |
|
|
}
|
271 |
|
|
if (! xdrrec_endofrecord(xdrs, shipnow))
|
272 |
|
|
return (ct->ct_error.re_status = RPC_CANTSEND);
|
273 |
|
|
if (! shipnow)
|
274 |
|
|
return (RPC_SUCCESS);
|
275 |
|
|
/*
|
276 |
|
|
* Hack to provide rpc-based message passing
|
277 |
|
|
*/
|
278 |
|
|
if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
|
279 |
|
|
return(ct->ct_error.re_status = RPC_TIMEDOUT);
|
280 |
|
|
}
|
281 |
|
|
|
282 |
|
|
|
283 |
|
|
/*
|
284 |
|
|
* Keep receiving until we get a valid transaction id
|
285 |
|
|
*/
|
286 |
|
|
xdrs->x_op = XDR_DECODE;
|
287 |
|
|
while (TRUE) {
|
288 |
|
|
reply_msg.acpted_rply.ar_verf = _null_auth;
|
289 |
|
|
reply_msg.acpted_rply.ar_results.where = NULL;
|
290 |
|
|
reply_msg.acpted_rply.ar_results.proc = xdr_void;
|
291 |
|
|
if (! xdrrec_skiprecord(xdrs))
|
292 |
|
|
return (ct->ct_error.re_status);
|
293 |
|
|
/* now decode and validate the response header */
|
294 |
|
|
if (! xdr_replymsg(xdrs, &reply_msg)) {
|
295 |
|
|
if (ct->ct_error.re_status == RPC_SUCCESS)
|
296 |
|
|
continue;
|
297 |
|
|
return (ct->ct_error.re_status);
|
298 |
|
|
}
|
299 |
|
|
if (reply_msg.rm_xid == x_id)
|
300 |
|
|
break;
|
301 |
|
|
}
|
302 |
|
|
|
303 |
|
|
/*
|
304 |
|
|
* process header
|
305 |
|
|
*/
|
306 |
|
|
_seterr_reply(&reply_msg, &(ct->ct_error));
|
307 |
|
|
if (ct->ct_error.re_status == RPC_SUCCESS) {
|
308 |
|
|
if (! AUTH_VALIDATE(h->cl_auth, &reply_msg.acpted_rply.ar_verf)) {
|
309 |
|
|
ct->ct_error.re_status = RPC_AUTHERROR;
|
310 |
|
|
ct->ct_error.re_why = AUTH_INVALIDRESP;
|
311 |
|
|
} else if (! (*xdr_results)(xdrs, results_ptr)) {
|
312 |
|
|
if (ct->ct_error.re_status == RPC_SUCCESS)
|
313 |
|
|
ct->ct_error.re_status = RPC_CANTDECODERES;
|
314 |
|
|
}
|
315 |
|
|
/* free verifier ... */
|
316 |
|
|
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
|
317 |
|
|
xdrs->x_op = XDR_FREE;
|
318 |
|
|
(void)xdr_opaque_auth(xdrs, &(reply_msg.acpted_rply.ar_verf));
|
319 |
|
|
}
|
320 |
|
|
} /* end successful completion */
|
321 |
|
|
else {
|
322 |
|
|
/* maybe our credentials need to be refreshed ... */
|
323 |
|
|
if (refreshes-- && AUTH_REFRESH(h->cl_auth))
|
324 |
|
|
goto call_again;
|
325 |
|
|
} /* end of unsuccessful completion */
|
326 |
|
|
return (ct->ct_error.re_status);
|
327 |
|
|
}
|
328 |
|
|
|
329 |
|
|
static void
|
330 |
|
|
clnttcp_geterr(h, errp)
|
331 |
|
|
CLIENT *h;
|
332 |
|
|
struct rpc_err *errp;
|
333 |
|
|
{
|
334 |
|
|
register struct ct_data *ct =
|
335 |
|
|
(struct ct_data *) h->cl_private;
|
336 |
|
|
|
337 |
|
|
*errp = ct->ct_error;
|
338 |
|
|
}
|
339 |
|
|
|
340 |
|
|
static bool_t
|
341 |
|
|
clnttcp_freeres(cl, xdr_res, res_ptr)
|
342 |
|
|
CLIENT *cl;
|
343 |
|
|
xdrproc_t xdr_res;
|
344 |
|
|
caddr_t res_ptr;
|
345 |
|
|
{
|
346 |
|
|
register struct ct_data *ct = (struct ct_data *)cl->cl_private;
|
347 |
|
|
register XDR *xdrs = &(ct->ct_xdrs);
|
348 |
|
|
|
349 |
|
|
xdrs->x_op = XDR_FREE;
|
350 |
|
|
return ((*xdr_res)(xdrs, res_ptr));
|
351 |
|
|
}
|
352 |
|
|
|
353 |
|
|
static void
|
354 |
|
|
clnttcp_abort()
|
355 |
|
|
{
|
356 |
|
|
}
|
357 |
|
|
|
358 |
|
|
|
359 |
|
|
static bool_t
|
360 |
|
|
clnttcp_control(cl, request, info)
|
361 |
|
|
CLIENT *cl;
|
362 |
|
|
int request;
|
363 |
|
|
char *info;
|
364 |
|
|
{
|
365 |
|
|
register struct ct_data *ct = (struct ct_data *)cl->cl_private;
|
366 |
|
|
register struct timeval *tv;
|
367 |
|
|
int len;
|
368 |
|
|
|
369 |
|
|
switch (request) {
|
370 |
|
|
case CLSET_FD_CLOSE:
|
371 |
|
|
ct->ct_closeit = TRUE;
|
372 |
|
|
break;
|
373 |
|
|
case CLSET_FD_NCLOSE:
|
374 |
|
|
ct->ct_closeit = FALSE;
|
375 |
|
|
break;
|
376 |
|
|
case CLSET_TIMEOUT:
|
377 |
|
|
if (info == NULL)
|
378 |
|
|
return(FALSE);
|
379 |
|
|
tv = (struct timeval *)info;
|
380 |
|
|
ct->ct_wait.tv_sec = tv->tv_sec;
|
381 |
|
|
ct->ct_wait.tv_usec = tv->tv_usec;
|
382 |
|
|
ct->ct_waitset = TRUE;
|
383 |
|
|
break;
|
384 |
|
|
case CLGET_TIMEOUT:
|
385 |
|
|
if (info == NULL)
|
386 |
|
|
return(FALSE);
|
387 |
|
|
*(struct timeval *)info = ct->ct_wait;
|
388 |
|
|
break;
|
389 |
|
|
case CLGET_SERVER_ADDR:
|
390 |
|
|
if (info == NULL)
|
391 |
|
|
return(FALSE);
|
392 |
|
|
*(struct sockaddr_in *)info = ct->ct_addr;
|
393 |
|
|
break;
|
394 |
|
|
case CLGET_FD:
|
395 |
|
|
if (info == NULL)
|
396 |
|
|
return(FALSE);
|
397 |
|
|
*(int *)info = ct->ct_sock;
|
398 |
|
|
break;
|
399 |
|
|
case CLGET_XID:
|
400 |
|
|
/*
|
401 |
|
|
* use the knowledge that xid is the
|
402 |
|
|
* first element in the call structure *.
|
403 |
|
|
* This will get the xid of the PREVIOUS call
|
404 |
|
|
*/
|
405 |
|
|
if (info == NULL)
|
406 |
|
|
return(FALSE);
|
407 |
|
|
*(u_long *)info = ntohl(*(u_long *)ct->ct_mcall);
|
408 |
|
|
break;
|
409 |
|
|
case CLSET_XID:
|
410 |
|
|
/* This will set the xid of the NEXT call */
|
411 |
|
|
if (info == NULL)
|
412 |
|
|
return(FALSE);
|
413 |
|
|
*(u_long *)ct->ct_mcall = htonl(*(u_long *)info - 1);
|
414 |
|
|
/* decrement by 1 as clnttcp_call() increments once */
|
415 |
|
|
case CLGET_VERS:
|
416 |
|
|
/*
|
417 |
|
|
* This RELIES on the information that, in the call body,
|
418 |
|
|
* the version number field is the fifth field from the
|
419 |
|
|
* begining of the RPC header. MUST be changed if the
|
420 |
|
|
* call_struct is changed
|
421 |
|
|
*/
|
422 |
|
|
if (info == NULL)
|
423 |
|
|
return(FALSE);
|
424 |
|
|
*(u_long *)info = ntohl(*(u_long *)(ct->ct_mcall +
|
425 |
|
|
4 * BYTES_PER_XDR_UNIT));
|
426 |
|
|
break;
|
427 |
|
|
case CLSET_VERS:
|
428 |
|
|
if (info == NULL)
|
429 |
|
|
return(FALSE);
|
430 |
|
|
*(u_long *)(ct->ct_mcall + 4 * BYTES_PER_XDR_UNIT)
|
431 |
|
|
= htonl(*(u_long *)info);
|
432 |
|
|
break;
|
433 |
|
|
case CLGET_PROG:
|
434 |
|
|
/*
|
435 |
|
|
* This RELIES on the information that, in the call body,
|
436 |
|
|
* the program number field is the field from the
|
437 |
|
|
* begining of the RPC header. MUST be changed if the
|
438 |
|
|
* call_struct is changed
|
439 |
|
|
*/
|
440 |
|
|
if (info == NULL)
|
441 |
|
|
return(FALSE);
|
442 |
|
|
*(u_long *)info = ntohl(*(u_long *)(ct->ct_mcall +
|
443 |
|
|
3 * BYTES_PER_XDR_UNIT));
|
444 |
|
|
break;
|
445 |
|
|
case CLSET_PROG:
|
446 |
|
|
if (info == NULL)
|
447 |
|
|
return(FALSE);
|
448 |
|
|
*(u_long *)(ct->ct_mcall + 3 * BYTES_PER_XDR_UNIT)
|
449 |
|
|
= htonl(*(u_long *)info);
|
450 |
|
|
break;
|
451 |
|
|
case CLGET_LOCAL_ADDR:
|
452 |
|
|
len = sizeof(struct sockaddr);
|
453 |
|
|
if (getsockname(ct->ct_sock, (struct sockaddr *)info, &len) <0)
|
454 |
|
|
return(FALSE);
|
455 |
|
|
break;
|
456 |
|
|
case CLGET_RETRY_TIMEOUT:
|
457 |
|
|
case CLSET_RETRY_TIMEOUT:
|
458 |
|
|
case CLGET_SVC_ADDR:
|
459 |
|
|
case CLSET_SVC_ADDR:
|
460 |
|
|
case CLSET_PUSH_TIMOD:
|
461 |
|
|
case CLSET_POP_TIMOD:
|
462 |
|
|
default:
|
463 |
|
|
return (FALSE);
|
464 |
|
|
}
|
465 |
|
|
return (TRUE);
|
466 |
|
|
}
|
467 |
|
|
|
468 |
|
|
|
469 |
|
|
static void
|
470 |
|
|
clnttcp_destroy(h)
|
471 |
|
|
CLIENT *h;
|
472 |
|
|
{
|
473 |
|
|
register struct ct_data *ct =
|
474 |
|
|
(struct ct_data *) h->cl_private;
|
475 |
|
|
|
476 |
|
|
if (ct->ct_closeit) {
|
477 |
|
|
(void)_close(ct->ct_sock);
|
478 |
|
|
}
|
479 |
|
|
XDR_DESTROY(&(ct->ct_xdrs));
|
480 |
|
|
mem_free((caddr_t)ct, sizeof(struct ct_data));
|
481 |
|
|
mem_free((caddr_t)h, sizeof(CLIENT));
|
482 |
|
|
}
|
483 |
|
|
|
484 |
|
|
/*
|
485 |
|
|
* Interface between xdr serializer and tcp connection.
|
486 |
|
|
* Behaves like the system calls, read & write, but keeps some error state
|
487 |
|
|
* around for the rpc level.
|
488 |
|
|
*/
|
489 |
|
|
static int
|
490 |
|
|
readtcp(ct, buf, len)
|
491 |
|
|
register struct ct_data *ct;
|
492 |
|
|
caddr_t buf;
|
493 |
|
|
register int len;
|
494 |
|
|
{
|
495 |
|
|
fd_set *fds, readfds;
|
496 |
|
|
struct timeval start, after, duration, delta, tmp, tv;
|
497 |
|
|
int r, save_errno;
|
498 |
|
|
|
499 |
|
|
if (len == 0)
|
500 |
|
|
return (0);
|
501 |
|
|
|
502 |
|
|
if (ct->ct_sock + 1 > FD_SETSIZE) {
|
503 |
|
|
int bytes = howmany(ct->ct_sock + 1, NFDBITS) * sizeof(fd_mask);
|
504 |
|
|
fds = (fd_set *)malloc(bytes);
|
505 |
|
|
if (fds == NULL)
|
506 |
|
|
return (-1);
|
507 |
|
|
memset(fds, 0, bytes);
|
508 |
|
|
} else {
|
509 |
|
|
fds = &readfds;
|
510 |
|
|
FD_ZERO(fds);
|
511 |
|
|
}
|
512 |
|
|
|
513 |
|
|
gettimeofday(&start, NULL);
|
514 |
|
|
delta = ct->ct_wait;
|
515 |
|
|
while (TRUE) {
|
516 |
|
|
/* XXX we know the other bits are still clear */
|
517 |
|
|
FD_SET(ct->ct_sock, fds);
|
518 |
|
|
tv = delta; /* in case select writes back */
|
519 |
|
|
r = select(ct->ct_sock+1, fds, NULL, NULL, &tv);
|
520 |
|
|
save_errno = errno;
|
521 |
|
|
|
522 |
|
|
gettimeofday(&after, NULL);
|
523 |
|
|
timersub(&start, &after, &duration);
|
524 |
|
|
timersub(&ct->ct_wait, &duration, &tmp);
|
525 |
|
|
delta = tmp;
|
526 |
|
|
if (delta.tv_sec < 0 || !timerisset(&delta))
|
527 |
|
|
r = 0;
|
528 |
|
|
|
529 |
|
|
switch (r) {
|
530 |
|
|
case 0:
|
531 |
|
|
if (fds != &readfds)
|
532 |
|
|
free(fds);
|
533 |
|
|
ct->ct_error.re_status = RPC_TIMEDOUT;
|
534 |
|
|
return (-1);
|
535 |
|
|
|
536 |
|
|
case -1:
|
537 |
|
|
if (errno == EINTR)
|
538 |
|
|
continue;
|
539 |
|
|
if (fds != &readfds)
|
540 |
|
|
free(fds);
|
541 |
|
|
ct->ct_error.re_status = RPC_CANTRECV;
|
542 |
|
|
ct->ct_error.re_errno = save_errno;
|
543 |
|
|
return (-1);
|
544 |
|
|
}
|
545 |
|
|
break;
|
546 |
|
|
}
|
547 |
|
|
switch (len = _read(ct->ct_sock, buf, len)) {
|
548 |
|
|
|
549 |
|
|
case 0:
|
550 |
|
|
/* premature eof */
|
551 |
|
|
ct->ct_error.re_errno = ECONNRESET;
|
552 |
|
|
ct->ct_error.re_status = RPC_CANTRECV;
|
553 |
|
|
len = -1; /* it's really an error */
|
554 |
|
|
break;
|
555 |
|
|
|
556 |
|
|
case -1:
|
557 |
|
|
ct->ct_error.re_errno = errno;
|
558 |
|
|
ct->ct_error.re_status = RPC_CANTRECV;
|
559 |
|
|
break;
|
560 |
|
|
}
|
561 |
|
|
return (len);
|
562 |
|
|
}
|
563 |
|
|
|
564 |
|
|
static int
|
565 |
|
|
writetcp(ct, buf, len)
|
566 |
|
|
struct ct_data *ct;
|
567 |
|
|
caddr_t buf;
|
568 |
|
|
int len;
|
569 |
|
|
{
|
570 |
|
|
register int i, cnt;
|
571 |
|
|
|
572 |
|
|
for (cnt = len; cnt > 0; cnt -= i, buf += i) {
|
573 |
|
|
if ((i = _write(ct->ct_sock, buf, cnt)) == -1) {
|
574 |
|
|
ct->ct_error.re_errno = errno;
|
575 |
|
|
ct->ct_error.re_status = RPC_CANTSEND;
|
576 |
|
|
return (-1);
|
577 |
|
|
}
|
578 |
|
|
}
|
579 |
|
|
return (len);
|
580 |
|
|
}
|