2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
4 * @APPLE_LICENSE_HEADER_START@
6 * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7 * Reserved. This file contains Original Code and/or Modifications of
8 * Original Code as defined in and that are subject to the Apple Public
9 * Source License Version 1.1 (the "License"). You may not use this file
10 * except in compliance with the License. Please obtain a copy of the
11 * License at http://www.apple.com/publicsource and read it before using
14 * The Original Code and all software distributed under the License are
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16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the
19 * License for the specific language governing rights and limitations
22 * @APPLE_LICENSE_HEADER_END@
25 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
26 * unrestricted use provided that this legend is included on all tape
27 * media and as a part of the software program in whole or part. Users
28 * may copy or modify Sun RPC without charge, but are not authorized
29 * to license or distribute it to anyone else except as part of a product or
30 * program developed by the user.
32 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
33 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
34 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
36 * Sun RPC is provided with no support and without any obligation on the
37 * part of Sun Microsystems, Inc. to assist in its use, correction,
38 * modification or enhancement.
40 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
41 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
42 * OR ANY PART THEREOF.
44 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
45 * or profits or other special, indirect and consequential damages, even if
46 * Sun has been advised of the possibility of such damages.
48 * Sun Microsystems, Inc.
50 * Mountain View, California 94043
53 #if defined(LIBC_SCCS) && !defined(lint)
54 /*static char *sccsid = "from: @(#)svc_tcp.c 1.21 87/08/11 Copyr 1984 Sun Micro";*/
55 /*static char *sccsid = "from: @(#)svc_tcp.c 2.2 88/08/01 4.0 RPCSRC";*/
56 static char *rcsid
= "$Id: svc_tcp.c,v 1.2 1999/10/14 21:56:54 wsanchez Exp $";
60 * svc_tcp.c, Server side for TCP/IP based RPC.
62 * Copyright (C) 1984, Sun Microsystems, Inc.
64 * Actually implements two flavors of transporter -
65 * a tcp rendezvouser (a listner and connection establisher)
66 * and a record/tcp stream.
71 #include <sys/socket.h>
73 extern bool_t
abort();
77 * Ops vector for TCP/IP based rpc service handle
79 static bool_t
svctcp_recv();
80 static enum xprt_stat
svctcp_stat();
81 static bool_t
svctcp_getargs();
82 static bool_t
svctcp_reply();
83 static bool_t
svctcp_freeargs();
84 static void svctcp_destroy();
86 static struct xp_ops svctcp_op
= {
96 * Ops vector for TCP/IP rendezvous handler
98 static bool_t
rendezvous_request();
99 static enum xprt_stat
rendezvous_stat();
101 static struct xp_ops svctcp_rendezvous_op
= {
110 static int readtcp(), writetcp();
111 static SVCXPRT
*makefd_xprt();
113 struct tcp_rendezvous
{ /* kept in xprt->xp_p1 */
118 struct tcp_conn
{ /* kept in xprt->xp_p1 */
119 enum xprt_stat strm_stat
;
122 char verf_body
[MAX_AUTH_BYTES
];
127 * xprt = svctcp_create(sock, send_buf_size, recv_buf_size);
129 * Creates, registers, and returns a (rpc) tcp based transporter.
130 * Once *xprt is initialized, it is registered as a transporter
131 * see (svc.h, xprt_register). This routine returns
132 * a NULL if a problem occurred.
134 * If sock<0 then a socket is created, else sock is used.
135 * If the socket, sock is not bound to a port then svctcp_create
136 * binds it to an arbitrary port. The routine then starts a tcp
137 * listener on the socket's associated port. In any (successful) case,
138 * xprt->xp_sock is the registered socket number and xprt->xp_port is the
139 * associated port number.
141 * Since tcp streams do buffered io similar to stdio, the caller can specify
142 * how big the send and receive buffers are via the second and third parms;
143 * 0 => use the system default.
146 svctcp_create(sock
, sendsize
, recvsize
)
151 bool_t madesock
= FALSE
;
152 register SVCXPRT
*xprt
;
153 register struct tcp_rendezvous
*r
;
154 struct sockaddr_in addr
;
155 int len
= sizeof(struct sockaddr_in
);
157 if (sock
== RPC_ANYSOCK
) {
158 if ((sock
= socket(AF_INET
, SOCK_STREAM
, IPPROTO_TCP
)) < 0) {
159 perror("svctcp_.c - udp socket creation problem");
160 return ((SVCXPRT
*)NULL
);
164 bzero((char *)&addr
, sizeof (addr
));
165 addr
.sin_family
= AF_INET
;
166 if (bindresvport(sock
, &addr
)) {
168 (void)bind(sock
, (struct sockaddr
*)&addr
, len
);
170 if ((getsockname(sock
, (struct sockaddr
*)&addr
, &len
) != 0) ||
171 (listen(sock
, 2) != 0)) {
172 perror("svctcp_.c - cannot getsockname or listen");
175 return ((SVCXPRT
*)NULL
);
177 r
= (struct tcp_rendezvous
*)mem_alloc(sizeof(*r
));
179 (void) fprintf(stderr
, "svctcp_create: out of memory\n");
182 r
->sendsize
= sendsize
;
183 r
->recvsize
= recvsize
;
184 xprt
= (SVCXPRT
*)mem_alloc(sizeof(SVCXPRT
));
186 (void) fprintf(stderr
, "svctcp_create: out of memory\n");
190 xprt
->xp_p1
= (caddr_t
)r
;
191 xprt
->xp_verf
= _null_auth
;
192 xprt
->xp_ops
= &svctcp_rendezvous_op
;
193 xprt
->xp_port
= ntohs(addr
.sin_port
);
194 xprt
->xp_sock
= sock
;
200 * Like svtcp_create(), except the routine takes any *open* UNIX file
201 * descriptor as its first input.
204 svcfd_create(fd
, sendsize
, recvsize
)
210 return (makefd_xprt(fd
, sendsize
, recvsize
));
214 makefd_xprt(fd
, sendsize
, recvsize
)
219 register SVCXPRT
*xprt
;
220 register struct tcp_conn
*cd
;
222 xprt
= (SVCXPRT
*)mem_alloc(sizeof(SVCXPRT
));
223 if (xprt
== (SVCXPRT
*)NULL
) {
224 (void) fprintf(stderr
, "svc_tcp: makefd_xprt: out of memory\n");
227 cd
= (struct tcp_conn
*)mem_alloc(sizeof(struct tcp_conn
));
228 if (cd
== (struct tcp_conn
*)NULL
) {
229 (void) fprintf(stderr
, "svc_tcp: makefd_xprt: out of memory\n");
230 mem_free((char *) xprt
, sizeof(SVCXPRT
));
231 xprt
= (SVCXPRT
*)NULL
;
234 cd
->strm_stat
= XPRT_IDLE
;
235 xdrrec_create(&(cd
->xdrs
), sendsize
, recvsize
,
236 (caddr_t
)xprt
, readtcp
, writetcp
);
238 xprt
->xp_p1
= (caddr_t
)cd
;
239 xprt
->xp_verf
.oa_base
= cd
->verf_body
;
240 xprt
->xp_addrlen
= 0;
241 xprt
->xp_ops
= &svctcp_op
; /* truely deals with calls */
242 xprt
->xp_port
= 0; /* this is a connection, not a rendezvouser */
250 rendezvous_request(xprt
)
251 register SVCXPRT
*xprt
;
254 struct tcp_rendezvous
*r
;
255 struct sockaddr_in addr
;
258 r
= (struct tcp_rendezvous
*)xprt
->xp_p1
;
260 len
= sizeof(struct sockaddr_in
);
261 if ((sock
= accept(xprt
->xp_sock
, (struct sockaddr
*)&addr
,
268 * make a new transporter (re-uses xprt)
270 xprt
= makefd_xprt(sock
, r
->sendsize
, r
->recvsize
);
271 xprt
->xp_raddr
= addr
;
272 xprt
->xp_addrlen
= len
;
273 return (FALSE
); /* there is never an rpc msg to be processed */
276 static enum xprt_stat
285 register SVCXPRT
*xprt
;
287 register struct tcp_conn
*cd
= (struct tcp_conn
*)xprt
->xp_p1
;
289 xprt_unregister(xprt
);
290 (void)close(xprt
->xp_sock
);
291 if (xprt
->xp_port
!= 0) {
292 /* a rendezvouser socket */
295 /* an actual connection socket */
296 XDR_DESTROY(&(cd
->xdrs
));
298 mem_free((caddr_t
)cd
, sizeof(struct tcp_conn
));
299 mem_free((caddr_t
)xprt
, sizeof(SVCXPRT
));
303 * All read operations timeout after 35 seconds.
304 * A timeout is fatal for the connection.
306 static struct timeval wait_per_try
= { 35, 0 };
309 * reads data from the tcp conection.
310 * any error is fatal and the connection is closed.
311 * (And a read of zero bytes is a half closed stream => error.)
314 readtcp(xprt
, buf
, len
)
315 register SVCXPRT
*xprt
;
319 register int sock
= xprt
->xp_sock
;
327 if (select(sock
+1, &readfds
, (int*)NULL
, (int*)NULL
,
328 &wait_per_try
) <= 0) {
329 if (errno
== EINTR
) {
334 } while (!FD_ISSET(sock
, &readfds
));
335 if ((len
= read(sock
, buf
, len
)) > 0) {
339 ((struct tcp_conn
*)(xprt
->xp_p1
))->strm_stat
= XPRT_DIED
;
344 * writes data to the tcp connection.
345 * Any error is fatal and the connection is closed.
348 writetcp(xprt
, buf
, len
)
349 register SVCXPRT
*xprt
;
355 for (cnt
= len
; cnt
> 0; cnt
-= i
, buf
+= i
) {
356 if ((i
= write(xprt
->xp_sock
, buf
, cnt
)) < 0) {
357 ((struct tcp_conn
*)(xprt
->xp_p1
))->strm_stat
=
365 static enum xprt_stat
369 register struct tcp_conn
*cd
=
370 (struct tcp_conn
*)(xprt
->xp_p1
);
372 if (cd
->strm_stat
== XPRT_DIED
)
374 if (! xdrrec_eof(&(cd
->xdrs
)))
375 return (XPRT_MOREREQS
);
380 svctcp_recv(xprt
, msg
)
382 register struct rpc_msg
*msg
;
384 register struct tcp_conn
*cd
=
385 (struct tcp_conn
*)(xprt
->xp_p1
);
386 register XDR
*xdrs
= &(cd
->xdrs
);
388 xdrs
->x_op
= XDR_DECODE
;
389 (void)xdrrec_skiprecord(xdrs
);
390 if (xdr_callmsg(xdrs
, msg
)) {
391 cd
->x_id
= msg
->rm_xid
;
398 svctcp_getargs(xprt
, xdr_args
, args_ptr
)
404 return ((*xdr_args
)(&(((struct tcp_conn
*)(xprt
->xp_p1
))->xdrs
), args_ptr
));
408 svctcp_freeargs(xprt
, xdr_args
, args_ptr
)
414 &(((struct tcp_conn
*)(xprt
->xp_p1
))->xdrs
);
416 xdrs
->x_op
= XDR_FREE
;
417 return ((*xdr_args
)(xdrs
, args_ptr
));
421 svctcp_reply(xprt
, msg
)
423 register struct rpc_msg
*msg
;
425 register struct tcp_conn
*cd
=
426 (struct tcp_conn
*)(xprt
->xp_p1
);
427 register XDR
*xdrs
= &(cd
->xdrs
);
428 register bool_t stat
;
430 xdrs
->x_op
= XDR_ENCODE
;
431 msg
->rm_xid
= cd
->x_id
;
432 stat
= xdr_replymsg(xdrs
, msg
);
433 (void)xdrrec_endofrecord(xdrs
, TRUE
);