3
4/*
5 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
6 * unrestricted use provided that this legend is included on all tape
7 * media and as a part of the software program in whole or part. Users
8 * may copy or modify Sun RPC without charge, but are not authorized
9 * to license or distribute it to anyone else except as part of a product or
10 * program developed by the user.
11 *
12 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
13 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
14 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
15 *
16 * Sun RPC is provided with no support and without any obligation on the
17 * part of Sun Microsystems, Inc. to assist in its use, correction,
18 * modification or enhancement.
19 *
20 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
21 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
22 * OR ANY PART THEREOF.
23 *
24 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
25 * or profits or other special, indirect and consequential damages, even if
26 * Sun has been advised of the possibility of such damages.
27 *
28 * Sun Microsystems, Inc.
29 * 2550 Garcia Avenue
30 * Mountain View, California 94043
31 */
32
33#include <sys/cdefs.h>
34#if defined(LIBC_SCCS) && !defined(lint)
35static char *sccsid = "@(#)svc_tcp.c 1.21 87/08/11 Copyr 1984 Sun Micro";
36static char *sccsid = "@(#)svc_tcp.c 2.2 88/08/01 4.0 RPCSRC";
37#endif
38
39/*
40 * svc_vc.c, Server side for Connection Oriented based RPC.
41 *
42 * Actually implements two flavors of transporter -
43 * a tcp rendezvouser (a listner and connection establisher)
44 * and a record/tcp stream.
45 */
46
47#include "reentrant.h"
48#include "namespace.h"
49#include <sys/types.h>
50#include <sys/param.h>
51#include <sys/poll.h>
52#include <sys/socket.h>
53#include <sys/un.h>
54#include <sys/uio.h>
55#include <netinet/in.h>
56#include <netinet/tcp.h>
57
58#include <assert.h>
59#include <err.h>
60#include <errno.h>
61#include <stdio.h>
62#include <stdlib.h>
63#include <string.h>
64#include <unistd.h>
65
66#include <rpc/rpc.h>
67
68#include "rpc_com.h"
69#include "un-namespace.h"
70
71#define SOCKCREDSIZE(ngrps) \
72 (sizeof(struct cmsgcred) + (sizeof(gid_t) * ((ngrps) - 1)))
73
74static SVCXPRT *makefd_xprt __P((int, u_int, u_int));
75static bool_t rendezvous_request __P((SVCXPRT *, struct rpc_msg *));
76static enum xprt_stat rendezvous_stat __P((SVCXPRT *));
77static void svc_vc_destroy __P((SVCXPRT *));
78static int read_vc __P((caddr_t, caddr_t, int));
79static int write_vc __P((caddr_t, caddr_t, int));
80static enum xprt_stat svc_vc_stat __P((SVCXPRT *));
81static bool_t svc_vc_recv __P((SVCXPRT *, struct rpc_msg *));
82static bool_t svc_vc_getargs __P((SVCXPRT *, xdrproc_t, caddr_t));
83static bool_t svc_vc_freeargs __P((SVCXPRT *, xdrproc_t, caddr_t));
84static bool_t svc_vc_reply __P((SVCXPRT *, struct rpc_msg *));
85static void svc_vc_rendezvous_ops __P((SVCXPRT *));
86static void svc_vc_ops __P((SVCXPRT *));
87static bool_t svc_vc_control __P((SVCXPRT *xprt, const u_int rq, void *in));
88static int __msgwrite(int, void *, size_t);
89static int __msgread(int, void *, size_t);
90
91struct cf_rendezvous { /* kept in xprt->xp_p1 for rendezvouser */
92 u_int sendsize;
93 u_int recvsize;
94};
95
96struct cf_conn { /* kept in xprt->xp_p1 for actual connection */
97 enum xprt_stat strm_stat;
98 u_int32_t x_id;
99 XDR xdrs;
100 char verf_body[MAX_AUTH_BYTES];
101};
102
103struct cmessage {
104 struct cmsghdr cmsg;
105 struct cmsgcred cmcred;
106};
107
108
109/*
110 * Usage:
111 * xprt = svc_vc_create(sock, send_buf_size, recv_buf_size);
112 *
113 * Creates, registers, and returns a (rpc) tcp based transporter.
114 * Once *xprt is initialized, it is registered as a transporter
115 * see (svc.h, xprt_register). This routine returns
116 * a NULL if a problem occurred.
117 *
118 * The filedescriptor passed in is expected to refer to a bound, but
119 * not yet connected socket.
120 *
121 * Since streams do buffered io similar to stdio, the caller can specify
122 * how big the send and receive buffers are via the second and third parms;
123 * 0 => use the system default.
124 */
125SVCXPRT *
126svc_vc_create(fd, sendsize, recvsize)
127 int fd;
128 u_int sendsize;
129 u_int recvsize;
130{
131 SVCXPRT *xprt;
132 struct cf_rendezvous *r = NULL;
133 struct __rpc_sockinfo si;
134 struct sockaddr_storage sslocal;
135 socklen_t slen;
136 int one = 1;
137
138 r = mem_alloc(sizeof(*r));
139 if (r == NULL) {
140 warnx("svc_vc_create: out of memory");
141 goto cleanup_svc_vc_create;
142 }
143 if (!__rpc_fd2sockinfo(fd, &si))
144 return NULL;
145 r->sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsize);
146 r->recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsize);
147 xprt = mem_alloc(sizeof(SVCXPRT));
148 if (xprt == NULL) {
149 warnx("svc_vc_create: out of memory");
150 goto cleanup_svc_vc_create;
151 }
152 xprt->xp_tp = NULL;
153 xprt->xp_p1 = (caddr_t)(void *)r;
154 xprt->xp_p2 = NULL;
155 xprt->xp_p3 = NULL;
156 xprt->xp_verf = _null_auth;
157 svc_vc_rendezvous_ops(xprt);
158 xprt->xp_port = (u_short)-1; /* It is the rendezvouser */
159 xprt->xp_fd = fd;
160
161 slen = sizeof (struct sockaddr_storage);
162 if (_getsockname(fd, (struct sockaddr *)(void *)&sslocal, &slen) < 0) {
163 warnx("svc_vc_create: could not retrieve local addr");
164 goto cleanup_svc_vc_create;
165 }
166
167 xprt->xp_ltaddr.maxlen = xprt->xp_ltaddr.len = sslocal.ss_len;
168 xprt->xp_ltaddr.buf = mem_alloc((size_t)sslocal.ss_len);
169 if (xprt->xp_ltaddr.buf == NULL) {
170 warnx("svc_vc_create: no mem for local addr");
171 goto cleanup_svc_vc_create;
172 }
173 memcpy(xprt->xp_ltaddr.buf, &sslocal, (size_t)sslocal.ss_len);
174
175 xprt->xp_rtaddr.maxlen = sizeof (struct sockaddr_storage);
176 xprt_register(xprt);
177 return (xprt);
178cleanup_svc_vc_create:
179 if (r != NULL)
180 mem_free(r, sizeof(*r));
181 return (NULL);
182}
183
184/*
185 * Like svtcp_create(), except the routine takes any *open* UNIX file
186 * descriptor as its first input.
187 */
188SVCXPRT *
189svc_fd_create(fd, sendsize, recvsize)
190 int fd;
191 u_int sendsize;
192 u_int recvsize;
193{
194 struct sockaddr_storage ss;
195 socklen_t slen;
196 SVCXPRT *ret;
197
198 assert(fd != -1);
199
200 ret = makefd_xprt(fd, sendsize, recvsize);
201 if (ret == NULL)
202 return NULL;
203
204 slen = sizeof (struct sockaddr_storage);
205 if (_getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) {
206 warnx("svc_fd_create: could not retrieve local addr");
207 goto freedata;
208 }
209 ret->xp_ltaddr.maxlen = ret->xp_ltaddr.len = ss.ss_len;
210 ret->xp_ltaddr.buf = mem_alloc((size_t)ss.ss_len);
211 if (ret->xp_ltaddr.buf == NULL) {
212 warnx("svc_fd_create: no mem for local addr");
213 goto freedata;
214 }
215 memcpy(ret->xp_ltaddr.buf, &ss, (size_t)ss.ss_len);
216
217 slen = sizeof (struct sockaddr_storage);
218 if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) {
219 warnx("svc_fd_create: could not retrieve remote addr");
220 goto freedata;
221 }
222 ret->xp_rtaddr.maxlen = ret->xp_rtaddr.len = ss.ss_len;
223 ret->xp_rtaddr.buf = mem_alloc((size_t)ss.ss_len);
224 if (ret->xp_rtaddr.buf == NULL) {
225 warnx("svc_fd_create: no mem for local addr");
226 goto freedata;
227 }
228 memcpy(ret->xp_rtaddr.buf, &ss, (size_t)ss.ss_len);
229#ifdef PORTMAP
230 if (ss.ss_family == AF_INET) {
231 ret->xp_raddr = *(struct sockaddr_in *)ret->xp_rtaddr.buf;
232 ret->xp_addrlen = sizeof (struct sockaddr_in);
233 }
234#endif /* PORTMAP */
235
236 return ret;
237
238freedata:
239 if (ret->xp_ltaddr.buf != NULL)
240 mem_free(ret->xp_ltaddr.buf, rep->xp_ltaddr.maxlen);
241
242 return NULL;
243}
244
245static SVCXPRT *
246makefd_xprt(fd, sendsize, recvsize)
247 int fd;
248 u_int sendsize;
249 u_int recvsize;
250{
251 SVCXPRT *xprt;
252 struct cf_conn *cd;
253 const char *netid;
254 struct __rpc_sockinfo si;
255
256 assert(fd != -1);
257
258 xprt = mem_alloc(sizeof(SVCXPRT));
259 if (xprt == NULL) {
260 warnx("svc_vc: makefd_xprt: out of memory");
261 goto done;
262 }
263 memset(xprt, 0, sizeof *xprt);
264 cd = mem_alloc(sizeof(struct cf_conn));
265 if (cd == NULL) {
266 warnx("svc_tcp: makefd_xprt: out of memory");
267 mem_free(xprt, sizeof(SVCXPRT));
268 xprt = NULL;
269 goto done;
270 }
271 cd->strm_stat = XPRT_IDLE;
272 xdrrec_create(&(cd->xdrs), sendsize, recvsize,
273 (caddr_t)(void *)xprt, read_vc, write_vc);
274 xprt->xp_p1 = (caddr_t)(void *)cd;
275 xprt->xp_verf.oa_base = cd->verf_body;
276 svc_vc_ops(xprt); /* truely deals with calls */
277 xprt->xp_port = 0; /* this is a connection, not a rendezvouser */
278 xprt->xp_fd = fd;
279 if (__rpc_fd2sockinfo(fd, &si) && __rpc_sockinfo2netid(&si, &netid))
280 xprt->xp_netid = strdup(netid);
281
282 xprt_register(xprt);
283done:
284 return (xprt);
285}
286
287/*ARGSUSED*/
288static bool_t
289rendezvous_request(xprt, msg)
290 SVCXPRT *xprt;
291 struct rpc_msg *msg;
292{
293 int sock;
294 struct cf_rendezvous *r;
295 struct sockaddr_storage addr;
296 socklen_t len;
297 struct __rpc_sockinfo si;
298
299 assert(xprt != NULL);
300 assert(msg != NULL);
301
302 r = (struct cf_rendezvous *)xprt->xp_p1;
303again:
304 len = sizeof addr;
305 if ((sock = _accept(xprt->xp_fd, (struct sockaddr *)(void *)&addr,
306 &len)) < 0) {
307 if (errno == EINTR)
308 goto again;
309 return (FALSE);
310 }
311 /*
312 * make a new transporter (re-uses xprt)
313 */
314 xprt = makefd_xprt(sock, r->sendsize, r->recvsize);
315 xprt->xp_rtaddr.buf = mem_alloc(len);
316 if (xprt->xp_rtaddr.buf == NULL)
317 return (FALSE);
318 memcpy(xprt->xp_rtaddr.buf, &addr, len);
319 xprt->xp_rtaddr.len = len;
320#ifdef PORTMAP
321 if (addr.ss_family == AF_INET) {
322 xprt->xp_raddr = *(struct sockaddr_in *)xprt->xp_rtaddr.buf;
323 xprt->xp_addrlen = sizeof (struct sockaddr_in);
324 }
325#endif /* PORTMAP */
326 if (__rpc_fd2sockinfo(sock, &si) && si.si_proto == IPPROTO_TCP) {
327 len = 1;
328 /* XXX fvdl - is this useful? */
329 _setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, &len, sizeof (len));
330 }
331 return (FALSE); /* there is never an rpc msg to be processed */
332}
333
334/*ARGSUSED*/
335static enum xprt_stat
336rendezvous_stat(xprt)
337 SVCXPRT *xprt;
338{
339
340 return (XPRT_IDLE);
341}
342
343static void
344svc_vc_destroy(xprt)
345 SVCXPRT *xprt;
346{
347 struct cf_conn *cd;
348 struct cf_rendezvous *r;
349
350 assert(xprt != NULL);
351
352 cd = (struct cf_conn *)xprt->xp_p1;
353
354 xprt_unregister(xprt);
355 if (xprt->xp_fd != RPC_ANYFD)
356 (void)_close(xprt->xp_fd);
357 if (xprt->xp_port != 0) {
358 /* a rendezvouser socket */
359 r = (struct cf_rendezvous *)xprt->xp_p1;
360 mem_free(r, sizeof (struct cf_rendezvous));
361 xprt->xp_port = 0;
362 } else {
363 /* an actual connection socket */
364 XDR_DESTROY(&(cd->xdrs));
365 mem_free(cd, sizeof(struct cf_conn));
366 }
367 if (xprt->xp_rtaddr.buf)
368 mem_free(xprt->xp_rtaddr.buf, xprt->xp_rtaddr.maxlen);
369 if (xprt->xp_ltaddr.buf)
370 mem_free(xprt->xp_ltaddr.buf, xprt->xp_ltaddr.maxlen);
371 if (xprt->xp_tp)
372 free(xprt->xp_tp);
373 if (xprt->xp_netid)
374 free(xprt->xp_netid);
375 mem_free(xprt, sizeof(SVCXPRT));
376}
377
378/*ARGSUSED*/
379static bool_t
380svc_vc_control(xprt, rq, in)
381 SVCXPRT *xprt;
382 const u_int rq;
383 void *in;
384{
385 return (FALSE);
386}
387
388/*
389 * reads data from the tcp or uip connection.
390 * any error is fatal and the connection is closed.
391 * (And a read of zero bytes is a half closed stream => error.)
392 * All read operations timeout after 35 seconds. A timeout is
393 * fatal for the connection.
394 */
395static int
396read_vc(xprtp, buf, len)
397 caddr_t xprtp;
398 caddr_t buf;
399 int len;
400{
401 SVCXPRT *xprt;
402 int sock;
403 int milliseconds = 35 * 1000;
404 struct pollfd pollfd;
405 struct sockaddr *sa;
406 struct cmessage *cm;
407 struct cmsghdr *cmp;
408 struct sockcred *sc;
409
410 xprt = (SVCXPRT *)(void *)xprtp;
411 assert(xprt != NULL);
412
413 sock = xprt->xp_fd;
414
| 3
4/*
5 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
6 * unrestricted use provided that this legend is included on all tape
7 * media and as a part of the software program in whole or part. Users
8 * may copy or modify Sun RPC without charge, but are not authorized
9 * to license or distribute it to anyone else except as part of a product or
10 * program developed by the user.
11 *
12 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
13 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
14 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
15 *
16 * Sun RPC is provided with no support and without any obligation on the
17 * part of Sun Microsystems, Inc. to assist in its use, correction,
18 * modification or enhancement.
19 *
20 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
21 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
22 * OR ANY PART THEREOF.
23 *
24 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
25 * or profits or other special, indirect and consequential damages, even if
26 * Sun has been advised of the possibility of such damages.
27 *
28 * Sun Microsystems, Inc.
29 * 2550 Garcia Avenue
30 * Mountain View, California 94043
31 */
32
33#include <sys/cdefs.h>
34#if defined(LIBC_SCCS) && !defined(lint)
35static char *sccsid = "@(#)svc_tcp.c 1.21 87/08/11 Copyr 1984 Sun Micro";
36static char *sccsid = "@(#)svc_tcp.c 2.2 88/08/01 4.0 RPCSRC";
37#endif
38
39/*
40 * svc_vc.c, Server side for Connection Oriented based RPC.
41 *
42 * Actually implements two flavors of transporter -
43 * a tcp rendezvouser (a listner and connection establisher)
44 * and a record/tcp stream.
45 */
46
47#include "reentrant.h"
48#include "namespace.h"
49#include <sys/types.h>
50#include <sys/param.h>
51#include <sys/poll.h>
52#include <sys/socket.h>
53#include <sys/un.h>
54#include <sys/uio.h>
55#include <netinet/in.h>
56#include <netinet/tcp.h>
57
58#include <assert.h>
59#include <err.h>
60#include <errno.h>
61#include <stdio.h>
62#include <stdlib.h>
63#include <string.h>
64#include <unistd.h>
65
66#include <rpc/rpc.h>
67
68#include "rpc_com.h"
69#include "un-namespace.h"
70
71#define SOCKCREDSIZE(ngrps) \
72 (sizeof(struct cmsgcred) + (sizeof(gid_t) * ((ngrps) - 1)))
73
74static SVCXPRT *makefd_xprt __P((int, u_int, u_int));
75static bool_t rendezvous_request __P((SVCXPRT *, struct rpc_msg *));
76static enum xprt_stat rendezvous_stat __P((SVCXPRT *));
77static void svc_vc_destroy __P((SVCXPRT *));
78static int read_vc __P((caddr_t, caddr_t, int));
79static int write_vc __P((caddr_t, caddr_t, int));
80static enum xprt_stat svc_vc_stat __P((SVCXPRT *));
81static bool_t svc_vc_recv __P((SVCXPRT *, struct rpc_msg *));
82static bool_t svc_vc_getargs __P((SVCXPRT *, xdrproc_t, caddr_t));
83static bool_t svc_vc_freeargs __P((SVCXPRT *, xdrproc_t, caddr_t));
84static bool_t svc_vc_reply __P((SVCXPRT *, struct rpc_msg *));
85static void svc_vc_rendezvous_ops __P((SVCXPRT *));
86static void svc_vc_ops __P((SVCXPRT *));
87static bool_t svc_vc_control __P((SVCXPRT *xprt, const u_int rq, void *in));
88static int __msgwrite(int, void *, size_t);
89static int __msgread(int, void *, size_t);
90
91struct cf_rendezvous { /* kept in xprt->xp_p1 for rendezvouser */
92 u_int sendsize;
93 u_int recvsize;
94};
95
96struct cf_conn { /* kept in xprt->xp_p1 for actual connection */
97 enum xprt_stat strm_stat;
98 u_int32_t x_id;
99 XDR xdrs;
100 char verf_body[MAX_AUTH_BYTES];
101};
102
103struct cmessage {
104 struct cmsghdr cmsg;
105 struct cmsgcred cmcred;
106};
107
108
109/*
110 * Usage:
111 * xprt = svc_vc_create(sock, send_buf_size, recv_buf_size);
112 *
113 * Creates, registers, and returns a (rpc) tcp based transporter.
114 * Once *xprt is initialized, it is registered as a transporter
115 * see (svc.h, xprt_register). This routine returns
116 * a NULL if a problem occurred.
117 *
118 * The filedescriptor passed in is expected to refer to a bound, but
119 * not yet connected socket.
120 *
121 * Since streams do buffered io similar to stdio, the caller can specify
122 * how big the send and receive buffers are via the second and third parms;
123 * 0 => use the system default.
124 */
125SVCXPRT *
126svc_vc_create(fd, sendsize, recvsize)
127 int fd;
128 u_int sendsize;
129 u_int recvsize;
130{
131 SVCXPRT *xprt;
132 struct cf_rendezvous *r = NULL;
133 struct __rpc_sockinfo si;
134 struct sockaddr_storage sslocal;
135 socklen_t slen;
136 int one = 1;
137
138 r = mem_alloc(sizeof(*r));
139 if (r == NULL) {
140 warnx("svc_vc_create: out of memory");
141 goto cleanup_svc_vc_create;
142 }
143 if (!__rpc_fd2sockinfo(fd, &si))
144 return NULL;
145 r->sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsize);
146 r->recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsize);
147 xprt = mem_alloc(sizeof(SVCXPRT));
148 if (xprt == NULL) {
149 warnx("svc_vc_create: out of memory");
150 goto cleanup_svc_vc_create;
151 }
152 xprt->xp_tp = NULL;
153 xprt->xp_p1 = (caddr_t)(void *)r;
154 xprt->xp_p2 = NULL;
155 xprt->xp_p3 = NULL;
156 xprt->xp_verf = _null_auth;
157 svc_vc_rendezvous_ops(xprt);
158 xprt->xp_port = (u_short)-1; /* It is the rendezvouser */
159 xprt->xp_fd = fd;
160
161 slen = sizeof (struct sockaddr_storage);
162 if (_getsockname(fd, (struct sockaddr *)(void *)&sslocal, &slen) < 0) {
163 warnx("svc_vc_create: could not retrieve local addr");
164 goto cleanup_svc_vc_create;
165 }
166
167 xprt->xp_ltaddr.maxlen = xprt->xp_ltaddr.len = sslocal.ss_len;
168 xprt->xp_ltaddr.buf = mem_alloc((size_t)sslocal.ss_len);
169 if (xprt->xp_ltaddr.buf == NULL) {
170 warnx("svc_vc_create: no mem for local addr");
171 goto cleanup_svc_vc_create;
172 }
173 memcpy(xprt->xp_ltaddr.buf, &sslocal, (size_t)sslocal.ss_len);
174
175 xprt->xp_rtaddr.maxlen = sizeof (struct sockaddr_storage);
176 xprt_register(xprt);
177 return (xprt);
178cleanup_svc_vc_create:
179 if (r != NULL)
180 mem_free(r, sizeof(*r));
181 return (NULL);
182}
183
184/*
185 * Like svtcp_create(), except the routine takes any *open* UNIX file
186 * descriptor as its first input.
187 */
188SVCXPRT *
189svc_fd_create(fd, sendsize, recvsize)
190 int fd;
191 u_int sendsize;
192 u_int recvsize;
193{
194 struct sockaddr_storage ss;
195 socklen_t slen;
196 SVCXPRT *ret;
197
198 assert(fd != -1);
199
200 ret = makefd_xprt(fd, sendsize, recvsize);
201 if (ret == NULL)
202 return NULL;
203
204 slen = sizeof (struct sockaddr_storage);
205 if (_getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) {
206 warnx("svc_fd_create: could not retrieve local addr");
207 goto freedata;
208 }
209 ret->xp_ltaddr.maxlen = ret->xp_ltaddr.len = ss.ss_len;
210 ret->xp_ltaddr.buf = mem_alloc((size_t)ss.ss_len);
211 if (ret->xp_ltaddr.buf == NULL) {
212 warnx("svc_fd_create: no mem for local addr");
213 goto freedata;
214 }
215 memcpy(ret->xp_ltaddr.buf, &ss, (size_t)ss.ss_len);
216
217 slen = sizeof (struct sockaddr_storage);
218 if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) {
219 warnx("svc_fd_create: could not retrieve remote addr");
220 goto freedata;
221 }
222 ret->xp_rtaddr.maxlen = ret->xp_rtaddr.len = ss.ss_len;
223 ret->xp_rtaddr.buf = mem_alloc((size_t)ss.ss_len);
224 if (ret->xp_rtaddr.buf == NULL) {
225 warnx("svc_fd_create: no mem for local addr");
226 goto freedata;
227 }
228 memcpy(ret->xp_rtaddr.buf, &ss, (size_t)ss.ss_len);
229#ifdef PORTMAP
230 if (ss.ss_family == AF_INET) {
231 ret->xp_raddr = *(struct sockaddr_in *)ret->xp_rtaddr.buf;
232 ret->xp_addrlen = sizeof (struct sockaddr_in);
233 }
234#endif /* PORTMAP */
235
236 return ret;
237
238freedata:
239 if (ret->xp_ltaddr.buf != NULL)
240 mem_free(ret->xp_ltaddr.buf, rep->xp_ltaddr.maxlen);
241
242 return NULL;
243}
244
245static SVCXPRT *
246makefd_xprt(fd, sendsize, recvsize)
247 int fd;
248 u_int sendsize;
249 u_int recvsize;
250{
251 SVCXPRT *xprt;
252 struct cf_conn *cd;
253 const char *netid;
254 struct __rpc_sockinfo si;
255
256 assert(fd != -1);
257
258 xprt = mem_alloc(sizeof(SVCXPRT));
259 if (xprt == NULL) {
260 warnx("svc_vc: makefd_xprt: out of memory");
261 goto done;
262 }
263 memset(xprt, 0, sizeof *xprt);
264 cd = mem_alloc(sizeof(struct cf_conn));
265 if (cd == NULL) {
266 warnx("svc_tcp: makefd_xprt: out of memory");
267 mem_free(xprt, sizeof(SVCXPRT));
268 xprt = NULL;
269 goto done;
270 }
271 cd->strm_stat = XPRT_IDLE;
272 xdrrec_create(&(cd->xdrs), sendsize, recvsize,
273 (caddr_t)(void *)xprt, read_vc, write_vc);
274 xprt->xp_p1 = (caddr_t)(void *)cd;
275 xprt->xp_verf.oa_base = cd->verf_body;
276 svc_vc_ops(xprt); /* truely deals with calls */
277 xprt->xp_port = 0; /* this is a connection, not a rendezvouser */
278 xprt->xp_fd = fd;
279 if (__rpc_fd2sockinfo(fd, &si) && __rpc_sockinfo2netid(&si, &netid))
280 xprt->xp_netid = strdup(netid);
281
282 xprt_register(xprt);
283done:
284 return (xprt);
285}
286
287/*ARGSUSED*/
288static bool_t
289rendezvous_request(xprt, msg)
290 SVCXPRT *xprt;
291 struct rpc_msg *msg;
292{
293 int sock;
294 struct cf_rendezvous *r;
295 struct sockaddr_storage addr;
296 socklen_t len;
297 struct __rpc_sockinfo si;
298
299 assert(xprt != NULL);
300 assert(msg != NULL);
301
302 r = (struct cf_rendezvous *)xprt->xp_p1;
303again:
304 len = sizeof addr;
305 if ((sock = _accept(xprt->xp_fd, (struct sockaddr *)(void *)&addr,
306 &len)) < 0) {
307 if (errno == EINTR)
308 goto again;
309 return (FALSE);
310 }
311 /*
312 * make a new transporter (re-uses xprt)
313 */
314 xprt = makefd_xprt(sock, r->sendsize, r->recvsize);
315 xprt->xp_rtaddr.buf = mem_alloc(len);
316 if (xprt->xp_rtaddr.buf == NULL)
317 return (FALSE);
318 memcpy(xprt->xp_rtaddr.buf, &addr, len);
319 xprt->xp_rtaddr.len = len;
320#ifdef PORTMAP
321 if (addr.ss_family == AF_INET) {
322 xprt->xp_raddr = *(struct sockaddr_in *)xprt->xp_rtaddr.buf;
323 xprt->xp_addrlen = sizeof (struct sockaddr_in);
324 }
325#endif /* PORTMAP */
326 if (__rpc_fd2sockinfo(sock, &si) && si.si_proto == IPPROTO_TCP) {
327 len = 1;
328 /* XXX fvdl - is this useful? */
329 _setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, &len, sizeof (len));
330 }
331 return (FALSE); /* there is never an rpc msg to be processed */
332}
333
334/*ARGSUSED*/
335static enum xprt_stat
336rendezvous_stat(xprt)
337 SVCXPRT *xprt;
338{
339
340 return (XPRT_IDLE);
341}
342
343static void
344svc_vc_destroy(xprt)
345 SVCXPRT *xprt;
346{
347 struct cf_conn *cd;
348 struct cf_rendezvous *r;
349
350 assert(xprt != NULL);
351
352 cd = (struct cf_conn *)xprt->xp_p1;
353
354 xprt_unregister(xprt);
355 if (xprt->xp_fd != RPC_ANYFD)
356 (void)_close(xprt->xp_fd);
357 if (xprt->xp_port != 0) {
358 /* a rendezvouser socket */
359 r = (struct cf_rendezvous *)xprt->xp_p1;
360 mem_free(r, sizeof (struct cf_rendezvous));
361 xprt->xp_port = 0;
362 } else {
363 /* an actual connection socket */
364 XDR_DESTROY(&(cd->xdrs));
365 mem_free(cd, sizeof(struct cf_conn));
366 }
367 if (xprt->xp_rtaddr.buf)
368 mem_free(xprt->xp_rtaddr.buf, xprt->xp_rtaddr.maxlen);
369 if (xprt->xp_ltaddr.buf)
370 mem_free(xprt->xp_ltaddr.buf, xprt->xp_ltaddr.maxlen);
371 if (xprt->xp_tp)
372 free(xprt->xp_tp);
373 if (xprt->xp_netid)
374 free(xprt->xp_netid);
375 mem_free(xprt, sizeof(SVCXPRT));
376}
377
378/*ARGSUSED*/
379static bool_t
380svc_vc_control(xprt, rq, in)
381 SVCXPRT *xprt;
382 const u_int rq;
383 void *in;
384{
385 return (FALSE);
386}
387
388/*
389 * reads data from the tcp or uip connection.
390 * any error is fatal and the connection is closed.
391 * (And a read of zero bytes is a half closed stream => error.)
392 * All read operations timeout after 35 seconds. A timeout is
393 * fatal for the connection.
394 */
395static int
396read_vc(xprtp, buf, len)
397 caddr_t xprtp;
398 caddr_t buf;
399 int len;
400{
401 SVCXPRT *xprt;
402 int sock;
403 int milliseconds = 35 * 1000;
404 struct pollfd pollfd;
405 struct sockaddr *sa;
406 struct cmessage *cm;
407 struct cmsghdr *cmp;
408 struct sockcred *sc;
409
410 xprt = (SVCXPRT *)(void *)xprtp;
411 assert(xprt != NULL);
412
413 sock = xprt->xp_fd;
414
|
432
433 sa = (struct sockaddr *)xprt->xp_rtaddr.buf;
434 if (sa->sa_family == AF_LOCAL) {
435 if ((len = __msgread(sock, buf, len)) > 0) {
436 cm = (struct cmessage *)xprt->xp_verf.oa_base;
437 cmp = &cm->cmsg;
438 sc = (struct sockcred *)(void *)CMSG_DATA(cmp);
439 xprt->xp_p2 = sc;
440 return (len);
441 }
442 } else {
443 if ((len = _read(sock, buf, (size_t)len)) > 0)
444 return (len);
445 }
446
447fatal_err:
448 ((struct cf_conn *)(xprt->xp_p1))->strm_stat = XPRT_DIED;
449 return (-1);
450}
451
452/*
453 * writes data to the tcp connection.
454 * Any error is fatal and the connection is closed.
455 */
456static int
457write_vc(xprtp, buf, len)
458 caddr_t xprtp;
459 caddr_t buf;
460 int len;
461{
462 SVCXPRT *xprt;
463 int i, cnt;
464 struct sockaddr *sa;
465
466 xprt = (SVCXPRT *)(void *)xprtp;
467 assert(xprt != NULL);
468
469 sa = (struct sockaddr *)xprt->xp_rtaddr.buf;
470 if (sa->sa_family == AF_LOCAL) {
471 for (cnt = len; cnt > 0; cnt -= i, buf += i) {
472 if ((i = __msgwrite(xprt->xp_fd, buf,
473 (size_t)cnt)) < 0) {
474 ((struct cf_conn *)(xprt->xp_p1))->strm_stat =
475 XPRT_DIED;
476 return (-1);
477 }
478 }
479 } else {
480 for (cnt = len; cnt > 0; cnt -= i, buf += i) {
481 if ((i = _write(xprt->xp_fd, buf,
482 (size_t)cnt)) < 0) {
483 ((struct cf_conn *)(xprt->xp_p1))->strm_stat =
484 XPRT_DIED;
485 return (-1);
486 }
487 }
488 }
489
490 return (len);
491}
492
493static enum xprt_stat
494svc_vc_stat(xprt)
495 SVCXPRT *xprt;
496{
497 struct cf_conn *cd;
498
499 assert(xprt != NULL);
500
501 cd = (struct cf_conn *)(xprt->xp_p1);
502
503 if (cd->strm_stat == XPRT_DIED)
504 return (XPRT_DIED);
505 if (! xdrrec_eof(&(cd->xdrs)))
506 return (XPRT_MOREREQS);
507 return (XPRT_IDLE);
508}
509
510static bool_t
511svc_vc_recv(xprt, msg)
512 SVCXPRT *xprt;
513 struct rpc_msg *msg;
514{
515 struct cf_conn *cd;
516 XDR *xdrs;
517
518 assert(xprt != NULL);
519 assert(msg != NULL);
520
521 cd = (struct cf_conn *)(xprt->xp_p1);
522 xdrs = &(cd->xdrs);
523
524 xdrs->x_op = XDR_DECODE;
525 (void)xdrrec_skiprecord(xdrs);
526 if (xdr_callmsg(xdrs, msg)) {
527 cd->x_id = msg->rm_xid;
528 return (TRUE);
529 }
530 cd->strm_stat = XPRT_DIED;
531 return (FALSE);
532}
533
534static bool_t
535svc_vc_getargs(xprt, xdr_args, args_ptr)
536 SVCXPRT *xprt;
537 xdrproc_t xdr_args;
538 caddr_t args_ptr;
539{
540
541 assert(xprt != NULL);
542 /* args_ptr may be NULL */
543 return ((*xdr_args)(&(((struct cf_conn *)(xprt->xp_p1))->xdrs),
544 args_ptr));
545}
546
547static bool_t
548svc_vc_freeargs(xprt, xdr_args, args_ptr)
549 SVCXPRT *xprt;
550 xdrproc_t xdr_args;
551 caddr_t args_ptr;
552{
553 XDR *xdrs;
554
555 assert(xprt != NULL);
556 /* args_ptr may be NULL */
557
558 xdrs = &(((struct cf_conn *)(xprt->xp_p1))->xdrs);
559
560 xdrs->x_op = XDR_FREE;
561 return ((*xdr_args)(xdrs, args_ptr));
562}
563
564static bool_t
565svc_vc_reply(xprt, msg)
566 SVCXPRT *xprt;
567 struct rpc_msg *msg;
568{
569 struct cf_conn *cd;
570 XDR *xdrs;
571 bool_t stat;
572
573 assert(xprt != NULL);
574 assert(msg != NULL);
575
576 cd = (struct cf_conn *)(xprt->xp_p1);
577 xdrs = &(cd->xdrs);
578
579 xdrs->x_op = XDR_ENCODE;
580 msg->rm_xid = cd->x_id;
581 stat = xdr_replymsg(xdrs, msg);
582 (void)xdrrec_endofrecord(xdrs, TRUE);
583 return (stat);
584}
585
586static void
587svc_vc_ops(xprt)
588 SVCXPRT *xprt;
589{
590 static struct xp_ops ops;
591 static struct xp_ops2 ops2;
592 extern mutex_t ops_lock;
593
594/* VARIABLES PROTECTED BY ops_lock: ops, ops2 */
595
596 mutex_lock(&ops_lock);
597 if (ops.xp_recv == NULL) {
598 ops.xp_recv = svc_vc_recv;
599 ops.xp_stat = svc_vc_stat;
600 ops.xp_getargs = svc_vc_getargs;
601 ops.xp_reply = svc_vc_reply;
602 ops.xp_freeargs = svc_vc_freeargs;
603 ops.xp_destroy = svc_vc_destroy;
604 ops2.xp_control = svc_vc_control;
605 }
606 xprt->xp_ops = &ops;
607 xprt->xp_ops2 = &ops2;
608 mutex_unlock(&ops_lock);
609}
610
611static void
612svc_vc_rendezvous_ops(xprt)
613 SVCXPRT *xprt;
614{
615 static struct xp_ops ops;
616 static struct xp_ops2 ops2;
617 extern mutex_t ops_lock;
618
619 mutex_lock(&ops_lock);
620 if (ops.xp_recv == NULL) {
621 ops.xp_recv = rendezvous_request;
622 ops.xp_stat = rendezvous_stat;
623 ops.xp_getargs =
624 (bool_t (*) __P((SVCXPRT *, xdrproc_t, caddr_t)))abort;
625 ops.xp_reply =
626 (bool_t (*) __P((SVCXPRT *, struct rpc_msg *)))abort;
627 ops.xp_freeargs =
628 (bool_t (*) __P((SVCXPRT *, xdrproc_t, caddr_t)))abort,
629 ops.xp_destroy = svc_vc_destroy;
630 ops2.xp_control = svc_vc_control;
631 }
632 xprt->xp_ops = &ops;
633 xprt->xp_ops2 = &ops2;
634 mutex_unlock(&ops_lock);
635}
636
637static int
638__msgread(sock, buf, cnt)
639 int sock;
640 void *buf;
641 size_t cnt;
642{
643 struct iovec iov[1];
644 struct msghdr msg;
645 struct cmessage cm;
646
647 bzero((char *)&cm, sizeof(cm));
648 iov[0].iov_base = buf;
649 iov[0].iov_len = cnt;
650
651 msg.msg_iov = iov;
652 msg.msg_iovlen = 1;
653 msg.msg_name = NULL;
654 msg.msg_namelen = 0;
655 msg.msg_control = (caddr_t)&cm;
656 msg.msg_controllen = sizeof(struct cmessage);
657 msg.msg_flags = 0;
658
659 return(_recvmsg(sock, &msg, 0));
660}
661
662static int
663__msgwrite(sock, buf, cnt)
664 int sock;
665 void *buf;
666 size_t cnt;
667{
668 struct iovec iov[1];
669 struct msghdr msg;
670 struct cmessage cm;
671
672 bzero((char *)&cm, sizeof(cm));
673 iov[0].iov_base = buf;
674 iov[0].iov_len = cnt;
675
676 cm.cmsg.cmsg_type = SCM_CREDS;
677 cm.cmsg.cmsg_level = SOL_SOCKET;
678 cm.cmsg.cmsg_len = sizeof(struct cmessage);
679
680 msg.msg_iov = iov;
681 msg.msg_iovlen = 1;
682 msg.msg_name = NULL;
683 msg.msg_namelen = 0;
684 msg.msg_control = (caddr_t)&cm;
685 msg.msg_controllen = sizeof(struct cmessage);
686 msg.msg_flags = 0;
687
688 return(_sendmsg(sock, &msg, 0));
689}
| 430
431 sa = (struct sockaddr *)xprt->xp_rtaddr.buf;
432 if (sa->sa_family == AF_LOCAL) {
433 if ((len = __msgread(sock, buf, len)) > 0) {
434 cm = (struct cmessage *)xprt->xp_verf.oa_base;
435 cmp = &cm->cmsg;
436 sc = (struct sockcred *)(void *)CMSG_DATA(cmp);
437 xprt->xp_p2 = sc;
438 return (len);
439 }
440 } else {
441 if ((len = _read(sock, buf, (size_t)len)) > 0)
442 return (len);
443 }
444
445fatal_err:
446 ((struct cf_conn *)(xprt->xp_p1))->strm_stat = XPRT_DIED;
447 return (-1);
448}
449
450/*
451 * writes data to the tcp connection.
452 * Any error is fatal and the connection is closed.
453 */
454static int
455write_vc(xprtp, buf, len)
456 caddr_t xprtp;
457 caddr_t buf;
458 int len;
459{
460 SVCXPRT *xprt;
461 int i, cnt;
462 struct sockaddr *sa;
463
464 xprt = (SVCXPRT *)(void *)xprtp;
465 assert(xprt != NULL);
466
467 sa = (struct sockaddr *)xprt->xp_rtaddr.buf;
468 if (sa->sa_family == AF_LOCAL) {
469 for (cnt = len; cnt > 0; cnt -= i, buf += i) {
470 if ((i = __msgwrite(xprt->xp_fd, buf,
471 (size_t)cnt)) < 0) {
472 ((struct cf_conn *)(xprt->xp_p1))->strm_stat =
473 XPRT_DIED;
474 return (-1);
475 }
476 }
477 } else {
478 for (cnt = len; cnt > 0; cnt -= i, buf += i) {
479 if ((i = _write(xprt->xp_fd, buf,
480 (size_t)cnt)) < 0) {
481 ((struct cf_conn *)(xprt->xp_p1))->strm_stat =
482 XPRT_DIED;
483 return (-1);
484 }
485 }
486 }
487
488 return (len);
489}
490
491static enum xprt_stat
492svc_vc_stat(xprt)
493 SVCXPRT *xprt;
494{
495 struct cf_conn *cd;
496
497 assert(xprt != NULL);
498
499 cd = (struct cf_conn *)(xprt->xp_p1);
500
501 if (cd->strm_stat == XPRT_DIED)
502 return (XPRT_DIED);
503 if (! xdrrec_eof(&(cd->xdrs)))
504 return (XPRT_MOREREQS);
505 return (XPRT_IDLE);
506}
507
508static bool_t
509svc_vc_recv(xprt, msg)
510 SVCXPRT *xprt;
511 struct rpc_msg *msg;
512{
513 struct cf_conn *cd;
514 XDR *xdrs;
515
516 assert(xprt != NULL);
517 assert(msg != NULL);
518
519 cd = (struct cf_conn *)(xprt->xp_p1);
520 xdrs = &(cd->xdrs);
521
522 xdrs->x_op = XDR_DECODE;
523 (void)xdrrec_skiprecord(xdrs);
524 if (xdr_callmsg(xdrs, msg)) {
525 cd->x_id = msg->rm_xid;
526 return (TRUE);
527 }
528 cd->strm_stat = XPRT_DIED;
529 return (FALSE);
530}
531
532static bool_t
533svc_vc_getargs(xprt, xdr_args, args_ptr)
534 SVCXPRT *xprt;
535 xdrproc_t xdr_args;
536 caddr_t args_ptr;
537{
538
539 assert(xprt != NULL);
540 /* args_ptr may be NULL */
541 return ((*xdr_args)(&(((struct cf_conn *)(xprt->xp_p1))->xdrs),
542 args_ptr));
543}
544
545static bool_t
546svc_vc_freeargs(xprt, xdr_args, args_ptr)
547 SVCXPRT *xprt;
548 xdrproc_t xdr_args;
549 caddr_t args_ptr;
550{
551 XDR *xdrs;
552
553 assert(xprt != NULL);
554 /* args_ptr may be NULL */
555
556 xdrs = &(((struct cf_conn *)(xprt->xp_p1))->xdrs);
557
558 xdrs->x_op = XDR_FREE;
559 return ((*xdr_args)(xdrs, args_ptr));
560}
561
562static bool_t
563svc_vc_reply(xprt, msg)
564 SVCXPRT *xprt;
565 struct rpc_msg *msg;
566{
567 struct cf_conn *cd;
568 XDR *xdrs;
569 bool_t stat;
570
571 assert(xprt != NULL);
572 assert(msg != NULL);
573
574 cd = (struct cf_conn *)(xprt->xp_p1);
575 xdrs = &(cd->xdrs);
576
577 xdrs->x_op = XDR_ENCODE;
578 msg->rm_xid = cd->x_id;
579 stat = xdr_replymsg(xdrs, msg);
580 (void)xdrrec_endofrecord(xdrs, TRUE);
581 return (stat);
582}
583
584static void
585svc_vc_ops(xprt)
586 SVCXPRT *xprt;
587{
588 static struct xp_ops ops;
589 static struct xp_ops2 ops2;
590 extern mutex_t ops_lock;
591
592/* VARIABLES PROTECTED BY ops_lock: ops, ops2 */
593
594 mutex_lock(&ops_lock);
595 if (ops.xp_recv == NULL) {
596 ops.xp_recv = svc_vc_recv;
597 ops.xp_stat = svc_vc_stat;
598 ops.xp_getargs = svc_vc_getargs;
599 ops.xp_reply = svc_vc_reply;
600 ops.xp_freeargs = svc_vc_freeargs;
601 ops.xp_destroy = svc_vc_destroy;
602 ops2.xp_control = svc_vc_control;
603 }
604 xprt->xp_ops = &ops;
605 xprt->xp_ops2 = &ops2;
606 mutex_unlock(&ops_lock);
607}
608
609static void
610svc_vc_rendezvous_ops(xprt)
611 SVCXPRT *xprt;
612{
613 static struct xp_ops ops;
614 static struct xp_ops2 ops2;
615 extern mutex_t ops_lock;
616
617 mutex_lock(&ops_lock);
618 if (ops.xp_recv == NULL) {
619 ops.xp_recv = rendezvous_request;
620 ops.xp_stat = rendezvous_stat;
621 ops.xp_getargs =
622 (bool_t (*) __P((SVCXPRT *, xdrproc_t, caddr_t)))abort;
623 ops.xp_reply =
624 (bool_t (*) __P((SVCXPRT *, struct rpc_msg *)))abort;
625 ops.xp_freeargs =
626 (bool_t (*) __P((SVCXPRT *, xdrproc_t, caddr_t)))abort,
627 ops.xp_destroy = svc_vc_destroy;
628 ops2.xp_control = svc_vc_control;
629 }
630 xprt->xp_ops = &ops;
631 xprt->xp_ops2 = &ops2;
632 mutex_unlock(&ops_lock);
633}
634
635static int
636__msgread(sock, buf, cnt)
637 int sock;
638 void *buf;
639 size_t cnt;
640{
641 struct iovec iov[1];
642 struct msghdr msg;
643 struct cmessage cm;
644
645 bzero((char *)&cm, sizeof(cm));
646 iov[0].iov_base = buf;
647 iov[0].iov_len = cnt;
648
649 msg.msg_iov = iov;
650 msg.msg_iovlen = 1;
651 msg.msg_name = NULL;
652 msg.msg_namelen = 0;
653 msg.msg_control = (caddr_t)&cm;
654 msg.msg_controllen = sizeof(struct cmessage);
655 msg.msg_flags = 0;
656
657 return(_recvmsg(sock, &msg, 0));
658}
659
660static int
661__msgwrite(sock, buf, cnt)
662 int sock;
663 void *buf;
664 size_t cnt;
665{
666 struct iovec iov[1];
667 struct msghdr msg;
668 struct cmessage cm;
669
670 bzero((char *)&cm, sizeof(cm));
671 iov[0].iov_base = buf;
672 iov[0].iov_len = cnt;
673
674 cm.cmsg.cmsg_type = SCM_CREDS;
675 cm.cmsg.cmsg_level = SOL_SOCKET;
676 cm.cmsg.cmsg_len = sizeof(struct cmessage);
677
678 msg.msg_iov = iov;
679 msg.msg_iovlen = 1;
680 msg.msg_name = NULL;
681 msg.msg_namelen = 0;
682 msg.msg_control = (caddr_t)&cm;
683 msg.msg_controllen = sizeof(struct cmessage);
684 msg.msg_flags = 0;
685
686 return(_sendmsg(sock, &msg, 0));
687}
|