rpc_soc.c revision 1.13.8.1
1 /* $NetBSD: rpc_soc.c,v 1.13.8.1 2013/03/14 22:03:15 riz Exp $ */ 2 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 34 /* #ident "@(#)rpc_soc.c 1.17 94/04/24 SMI" */ 35 36 /* 37 * Copyright (c) 1986-1991 by Sun Microsystems Inc. 38 * In addition, portions of such source code were derived from Berkeley 39 * 4.3 BSD under license from the Regents of the University of 40 * California. 41 */ 42 43 #include <sys/cdefs.h> 44 #if defined(LIBC_SCCS) && !defined(lint) 45 #if 0 46 static char sccsid[] = "@(#)rpc_soc.c 1.41 89/05/02 Copyr 1988 Sun Micro"; 47 #else 48 __RCSID("$NetBSD: rpc_soc.c,v 1.13.8.1 2013/03/14 22:03:15 riz Exp $"); 49 #endif 50 #endif 51 52 #ifdef PORTMAP 53 /* 54 * rpc_soc.c 55 * 56 * The backward compatibility routines for the earlier implementation 57 * of RPC, where the only transports supported were tcp/ip and udp/ip. 58 * Based on berkeley socket abstraction, now implemented on the top 59 * of TLI/Streams 60 */ 61 62 #include "namespace.h" 63 #include "reentrant.h" 64 #include <sys/types.h> 65 #include <sys/socket.h> 66 #include <stdio.h> 67 #include <rpc/rpc.h> 68 #include <rpc/pmap_clnt.h> 69 #include <rpc/pmap_prot.h> 70 #include <rpc/nettype.h> 71 #include <netinet/in.h> 72 #include <assert.h> 73 #include <errno.h> 74 #include <netdb.h> 75 #include <stdlib.h> 76 #include <string.h> 77 #include <syslog.h> 78 #include <unistd.h> 79 80 #include "rpc_internal.h" 81 82 #ifdef __weak_alias 83 __weak_alias(clntudp_bufcreate,_clntudp_bufcreate) 84 __weak_alias(clntudp_create,_clntudp_create) 85 __weak_alias(clnttcp_create,_clnttcp_create) 86 __weak_alias(clntraw_create,_clntraw_create) 87 __weak_alias(get_myaddress,_get_myaddress) 88 __weak_alias(svcfd_create,_svcfd_create) 89 __weak_alias(svcudp_bufcreate,_svcudp_bufcreate) 90 __weak_alias(svcudp_create,_svcudp_create) 91 __weak_alias(svctcp_create,_svctcp_create) 92 __weak_alias(svcraw_create,_svcraw_create) 93 __weak_alias(callrpc,_callrpc) 94 __weak_alias(registerrpc,_registerrpc) 95 __weak_alias(clnt_broadcast,_clnt_broadcast) 96 #endif 97 98 #ifdef _REENTRANT 99 extern mutex_t rpcsoc_lock; 100 #endif 101 102 static CLIENT *clnt_com_create __P((struct sockaddr_in *, rpcprog_t, rpcvers_t, 103 int *, u_int, u_int, const char *)); 104 static SVCXPRT *svc_com_create __P((int, u_int, u_int, const char *)); 105 static bool_t rpc_wrap_bcast __P((char *, struct netbuf *, struct netconfig *)); 106 107 /* 108 * A common clnt create routine 109 */ 110 static CLIENT * 111 clnt_com_create(raddr, prog, vers, sockp, sendsz, recvsz, tp) 112 struct sockaddr_in *raddr; 113 rpcprog_t prog; 114 rpcvers_t vers; 115 int *sockp; 116 u_int sendsz; 117 u_int recvsz; 118 const char *tp; 119 { 120 CLIENT *cl; 121 int madefd = FALSE; 122 int fd; 123 struct netconfig *nconf; 124 struct netbuf bindaddr; 125 126 _DIAGASSERT(raddr != NULL); 127 _DIAGASSERT(sockp != NULL); 128 _DIAGASSERT(tp != NULL); 129 130 fd = *sockp; 131 132 mutex_lock(&rpcsoc_lock); 133 if ((nconf = __rpc_getconfip(tp)) == NULL) { 134 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 135 mutex_unlock(&rpcsoc_lock); 136 return (NULL); 137 } 138 if (fd == RPC_ANYSOCK) { 139 fd = __rpc_nconf2fd(nconf); 140 if (fd == -1) 141 goto syserror; 142 madefd = TRUE; 143 } 144 145 if (raddr->sin_port == 0) { 146 u_int proto; 147 u_short sport; 148 149 mutex_unlock(&rpcsoc_lock); /* pmap_getport is recursive */ 150 proto = strcmp(tp, "udp") == 0 ? IPPROTO_UDP : IPPROTO_TCP; 151 sport = pmap_getport(raddr, (u_long)prog, (u_long)vers, 152 proto); 153 if (sport == 0) { 154 goto err; 155 } 156 raddr->sin_port = htons(sport); 157 mutex_lock(&rpcsoc_lock); /* pmap_getport is recursive */ 158 } 159 160 /* Transform sockaddr_in to netbuf */ 161 bindaddr.maxlen = bindaddr.len = sizeof (struct sockaddr_in); 162 bindaddr.buf = raddr; 163 164 bindresvport(fd, NULL); 165 cl = clnt_tli_create(fd, nconf, &bindaddr, prog, vers, 166 sendsz, recvsz); 167 if (cl) { 168 if (madefd == TRUE) { 169 /* 170 * The fd should be closed while destroying the handle. 171 */ 172 (void) CLNT_CONTROL(cl, CLSET_FD_CLOSE, NULL); 173 *sockp = fd; 174 } 175 (void) freenetconfigent(nconf); 176 mutex_unlock(&rpcsoc_lock); 177 return (cl); 178 } 179 goto err; 180 181 syserror: 182 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 183 rpc_createerr.cf_error.re_errno = errno; 184 185 err: if (madefd == TRUE) 186 (void) close(fd); 187 (void) freenetconfigent(nconf); 188 mutex_unlock(&rpcsoc_lock); 189 return (NULL); 190 } 191 192 CLIENT * 193 clntudp_bufcreate(raddr, prog, vers, wait, sockp, sendsz, recvsz) 194 struct sockaddr_in *raddr; 195 u_long prog; 196 u_long vers; 197 struct timeval wait; 198 int *sockp; 199 u_int sendsz; 200 u_int recvsz; 201 { 202 CLIENT *cl; 203 204 _DIAGASSERT(raddr != NULL); 205 _DIAGASSERT(sockp != NULL); 206 207 cl = clnt_com_create(raddr, (rpcprog_t)prog, (rpcvers_t)vers, sockp, 208 sendsz, recvsz, "udp"); 209 if (cl == NULL) { 210 return (NULL); 211 } 212 (void) CLNT_CONTROL(cl, CLSET_RETRY_TIMEOUT, (char *)(void *)&wait); 213 return (cl); 214 } 215 216 CLIENT * 217 clntudp_create(raddr, program, version, wait, sockp) 218 struct sockaddr_in *raddr; 219 u_long program; 220 u_long version; 221 struct timeval wait; 222 int *sockp; 223 { 224 return clntudp_bufcreate(raddr, program, version, wait, sockp, 225 UDPMSGSIZE, UDPMSGSIZE); 226 } 227 228 CLIENT * 229 clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz) 230 struct sockaddr_in *raddr; 231 u_long prog; 232 u_long vers; 233 int *sockp; 234 u_int sendsz; 235 u_int recvsz; 236 { 237 return clnt_com_create(raddr, (rpcprog_t)prog, (rpcvers_t)vers, sockp, 238 sendsz, recvsz, "tcp"); 239 } 240 241 CLIENT * 242 clntraw_create(prog, vers) 243 u_long prog; 244 u_long vers; 245 { 246 return clnt_raw_create((rpcprog_t)prog, (rpcvers_t)vers); 247 } 248 249 /* 250 * A common server create routine 251 */ 252 static SVCXPRT * 253 svc_com_create(fd, sendsize, recvsize, netid) 254 int fd; 255 u_int sendsize; 256 u_int recvsize; 257 const char *netid; 258 { 259 struct netconfig *nconf; 260 SVCXPRT *svc; 261 int madefd = FALSE; 262 int port; 263 struct sockaddr_in sccsin; 264 265 _DIAGASSERT(netid != NULL); 266 267 if ((nconf = __rpc_getconfip(netid)) == NULL) { 268 (void) syslog(LOG_ERR, "Could not get %s transport", netid); 269 return (NULL); 270 } 271 if (fd == RPC_ANYSOCK) { 272 fd = __rpc_nconf2fd(nconf); 273 if (fd == -1) { 274 (void) freenetconfigent(nconf); 275 (void) syslog(LOG_ERR, 276 "svc%s_create: could not open connection", netid); 277 return (NULL); 278 } 279 madefd = TRUE; 280 } 281 282 memset(&sccsin, 0, sizeof sccsin); 283 sccsin.sin_family = AF_INET; 284 bindresvport(fd, &sccsin); 285 listen(fd, SOMAXCONN); 286 svc = svc_tli_create(fd, nconf, NULL, sendsize, recvsize); 287 (void) freenetconfigent(nconf); 288 if (svc == NULL) { 289 if (madefd) 290 (void) close(fd); 291 return (NULL); 292 } 293 port = (((struct sockaddr_in *)svc->xp_ltaddr.buf)->sin_port); 294 svc->xp_port = ntohs(port); 295 return (svc); 296 } 297 298 SVCXPRT * 299 svctcp_create(fd, sendsize, recvsize) 300 int fd; 301 u_int sendsize; 302 u_int recvsize; 303 { 304 return svc_com_create(fd, sendsize, recvsize, "tcp"); 305 } 306 307 SVCXPRT * 308 svcudp_bufcreate(fd, sendsz, recvsz) 309 int fd; 310 u_int sendsz, recvsz; 311 { 312 return svc_com_create(fd, sendsz, recvsz, "udp"); 313 } 314 315 SVCXPRT * 316 svcfd_create(fd, sendsize, recvsize) 317 int fd; 318 u_int sendsize; 319 u_int recvsize; 320 { 321 return svc_fd_create(fd, sendsize, recvsize); 322 } 323 324 325 SVCXPRT * 326 svcudp_create(fd) 327 int fd; 328 { 329 return svc_com_create(fd, UDPMSGSIZE, UDPMSGSIZE, "udp"); 330 } 331 332 SVCXPRT * 333 svcraw_create() 334 { 335 return svc_raw_create(); 336 } 337 338 int 339 get_myaddress(addr) 340 struct sockaddr_in *addr; 341 { 342 343 _DIAGASSERT(addr != NULL); 344 345 memset((void *) addr, 0, sizeof(*addr)); 346 addr->sin_family = AF_INET; 347 addr->sin_port = htons(PMAPPORT); 348 addr->sin_addr.s_addr = htonl(INADDR_LOOPBACK); 349 return (0); 350 } 351 352 /* 353 * For connectionless "udp" transport. Obsoleted by rpc_call(). 354 */ 355 int 356 callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out) 357 char *host; 358 int prognum, versnum, procnum; 359 xdrproc_t inproc, outproc; 360 char *in, *out; 361 { 362 return (int)rpc_call(host, (rpcprog_t)prognum, (rpcvers_t)versnum, 363 (rpcproc_t)procnum, inproc, in, outproc, out, "udp"); 364 } 365 366 /* 367 * For connectionless kind of transport. Obsoleted by rpc_reg() 368 */ 369 int 370 registerrpc(prognum, versnum, procnum, progname, inproc, outproc) 371 int prognum, versnum, procnum; 372 char *(*progname) __P((char [UDPMSGSIZE])); 373 xdrproc_t inproc, outproc; 374 { 375 return rpc_reg((rpcprog_t)prognum, (rpcvers_t)versnum, 376 (rpcproc_t)procnum, progname, inproc, outproc, __UNCONST("udp")); 377 } 378 379 /* 380 * All the following clnt_broadcast stuff is convulated; it supports 381 * the earlier calling style of the callback function 382 */ 383 #ifdef _REENTRANT 384 static thread_key_t clnt_broadcast_key; 385 #endif 386 static resultproc_t clnt_broadcast_result_main; 387 388 /* 389 * Need to translate the netbuf address into sockaddr_in address. 390 * Dont care about netid here. 391 */ 392 /* ARGSUSED */ 393 static bool_t 394 rpc_wrap_bcast(resultp, addr, nconf) 395 char *resultp; /* results of the call */ 396 struct netbuf *addr; /* address of the guy who responded */ 397 struct netconfig *nconf; /* Netconf of the transport */ 398 { 399 resultproc_t clnt_broadcast_result; 400 401 _DIAGASSERT(resultp != NULL); 402 _DIAGASSERT(addr != NULL); 403 _DIAGASSERT(nconf != NULL); 404 405 if (strcmp(nconf->nc_netid, "udp")) 406 return (FALSE); 407 #ifdef _REENTRANT 408 if (__isthreaded == 0) 409 clnt_broadcast_result = clnt_broadcast_result_main; 410 else 411 clnt_broadcast_result = thr_getspecific(clnt_broadcast_key); 412 #else 413 clnt_broadcast_result = clnt_broadcast_result_main; 414 #endif 415 return (*clnt_broadcast_result)(resultp, 416 (struct sockaddr_in *)addr->buf); 417 } 418 419 #ifdef _REENTRANT 420 static once_t clnt_broadcast_once = ONCE_INITIALIZER; 421 422 static void 423 clnt_broadcast_setup(void) 424 { 425 426 thr_keycreate(&clnt_broadcast_key, free); 427 } 428 #endif 429 430 /* 431 * Broadcasts on UDP transport. Obsoleted by rpc_broadcast(). 432 */ 433 enum clnt_stat 434 clnt_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, eachresult) 435 u_long prog; /* program number */ 436 u_long vers; /* version number */ 437 u_long proc; /* procedure number */ 438 xdrproc_t xargs; /* xdr routine for args */ 439 caddr_t argsp; /* pointer to args */ 440 xdrproc_t xresults; /* xdr routine for results */ 441 caddr_t resultsp; /* pointer to results */ 442 resultproc_t eachresult; /* call with each result obtained */ 443 { 444 #ifdef _REENTRANT 445 if (__isthreaded == 0) 446 clnt_broadcast_result_main = eachresult; 447 else { 448 thr_once(&clnt_broadcast_once, clnt_broadcast_setup); 449 thr_setspecific(clnt_broadcast_key, (void *) eachresult); 450 } 451 #else 452 clnt_broadcast_result_main = eachresult; 453 #endif 454 return rpc_broadcast((rpcprog_t)prog, (rpcvers_t)vers, 455 (rpcproc_t)proc, xargs, argsp, xresults, resultsp, 456 (resultproc_t) rpc_wrap_bcast, "udp"); 457 } 458 459 #endif /* PORTMAP */ 460
Indexes created Wed Oct 01 13:09:50 GMT 2025