rpc_soc.c revision 1.10
1 /* $NetBSD: rpc_soc.c,v 1.10 2003/01/18 11:29:05 thorpej Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 32 /* #ident "@(#)rpc_soc.c 1.17 94/04/24 SMI" */ 33 34 /* 35 * Copyright (c) 1986-1991 by Sun Microsystems Inc. 36 * In addition, portions of such source code were derived from Berkeley 37 * 4.3 BSD under license from the Regents of the University of 38 * California. 39 */ 40 41 #if 0 42 #if !defined(lint) && defined(SCCSIDS) 43 static char sccsid[] = "@(#)rpc_soc.c 1.41 89/05/02 Copyr 1988 Sun Micro"; 44 #endif 45 #endif 46 47 #ifdef PORTMAP 48 /* 49 * rpc_soc.c 50 * 51 * The backward compatibility routines for the earlier implementation 52 * of RPC, where the only transports supported were tcp/ip and udp/ip. 53 * Based on berkeley socket abstraction, now implemented on the top 54 * of TLI/Streams 55 */ 56 57 #include "namespace.h" 58 #include "reentrant.h" 59 #include <sys/types.h> 60 #include <sys/socket.h> 61 #include <stdio.h> 62 #include <rpc/rpc.h> 63 #include <rpc/pmap_clnt.h> 64 #include <rpc/pmap_prot.h> 65 #include <rpc/nettype.h> 66 #include <netinet/in.h> 67 #include <assert.h> 68 #include <errno.h> 69 #include <netdb.h> 70 #include <stdlib.h> 71 #include <string.h> 72 #include <syslog.h> 73 #include <unistd.h> 74 75 #include "rpc_internal.h" 76 77 #ifdef __weak_alias 78 __weak_alias(clntudp_bufcreate,_clntudp_bufcreate) 79 __weak_alias(clntudp_create,_clntudp_create) 80 __weak_alias(clnttcp_create,_clnttcp_create) 81 __weak_alias(clntraw_create,_clntraw_create) 82 __weak_alias(get_myaddress,_get_myaddress) 83 __weak_alias(svcfd_create,_svcfd_create) 84 __weak_alias(svcudp_bufcreate,_svcudp_bufcreate) 85 __weak_alias(svcudp_create,_svcudp_create) 86 __weak_alias(svctcp_create,_svctcp_create) 87 __weak_alias(svcraw_create,_svcraw_create) 88 __weak_alias(callrpc,_callrpc) 89 __weak_alias(registerrpc,_registerrpc) 90 __weak_alias(clnt_broadcast,_clnt_broadcast) 91 #endif 92 93 #ifdef _REENTRANT 94 extern mutex_t rpcsoc_lock; 95 #endif 96 97 static CLIENT *clnt_com_create __P((struct sockaddr_in *, rpcprog_t, rpcvers_t, 98 int *, u_int, u_int, char *)); 99 static SVCXPRT *svc_com_create __P((int, u_int, u_int, char *)); 100 static bool_t rpc_wrap_bcast __P((char *, struct netbuf *, struct netconfig *)); 101 102 /* 103 * A common clnt create routine 104 */ 105 static CLIENT * 106 clnt_com_create(raddr, prog, vers, sockp, sendsz, recvsz, tp) 107 struct sockaddr_in *raddr; 108 rpcprog_t prog; 109 rpcvers_t vers; 110 int *sockp; 111 u_int sendsz; 112 u_int recvsz; 113 char *tp; 114 { 115 CLIENT *cl; 116 int madefd = FALSE; 117 int fd; 118 struct netconfig *nconf; 119 struct netbuf bindaddr; 120 121 _DIAGASSERT(raddr != NULL); 122 _DIAGASSERT(sockp != NULL); 123 _DIAGASSERT(tp != NULL); 124 125 fd = *sockp; 126 127 mutex_lock(&rpcsoc_lock); 128 if ((nconf = __rpc_getconfip(tp)) == NULL) { 129 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 130 mutex_unlock(&rpcsoc_lock); 131 return (NULL); 132 } 133 if (fd == RPC_ANYSOCK) { 134 fd = __rpc_nconf2fd(nconf); 135 if (fd == -1) 136 goto syserror; 137 madefd = TRUE; 138 } 139 140 if (raddr->sin_port == 0) { 141 u_int proto; 142 u_short sport; 143 144 mutex_unlock(&rpcsoc_lock); /* pmap_getport is recursive */ 145 proto = strcmp(tp, "udp") == 0 ? IPPROTO_UDP : IPPROTO_TCP; 146 sport = pmap_getport(raddr, (u_long)prog, (u_long)vers, 147 proto); 148 if (sport == 0) { 149 goto err; 150 } 151 raddr->sin_port = htons(sport); 152 mutex_lock(&rpcsoc_lock); /* pmap_getport is recursive */ 153 } 154 155 /* Transform sockaddr_in to netbuf */ 156 bindaddr.maxlen = bindaddr.len = sizeof (struct sockaddr_in); 157 bindaddr.buf = raddr; 158 159 bindresvport(fd, NULL); 160 cl = clnt_tli_create(fd, nconf, &bindaddr, prog, vers, 161 sendsz, recvsz); 162 if (cl) { 163 if (madefd == TRUE) { 164 /* 165 * The fd should be closed while destroying the handle. 166 */ 167 (void) CLNT_CONTROL(cl, CLSET_FD_CLOSE, NULL); 168 *sockp = fd; 169 } 170 (void) freenetconfigent(nconf); 171 mutex_unlock(&rpcsoc_lock); 172 return (cl); 173 } 174 goto err; 175 176 syserror: 177 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 178 rpc_createerr.cf_error.re_errno = errno; 179 180 err: if (madefd == TRUE) 181 (void) close(fd); 182 (void) freenetconfigent(nconf); 183 mutex_unlock(&rpcsoc_lock); 184 return (NULL); 185 } 186 187 CLIENT * 188 clntudp_bufcreate(raddr, prog, vers, wait, sockp, sendsz, recvsz) 189 struct sockaddr_in *raddr; 190 u_long prog; 191 u_long vers; 192 struct timeval wait; 193 int *sockp; 194 u_int sendsz; 195 u_int recvsz; 196 { 197 CLIENT *cl; 198 199 _DIAGASSERT(raddr != NULL); 200 _DIAGASSERT(sockp != NULL); 201 202 cl = clnt_com_create(raddr, (rpcprog_t)prog, (rpcvers_t)vers, sockp, 203 sendsz, recvsz, "udp"); 204 if (cl == NULL) { 205 return (NULL); 206 } 207 (void) CLNT_CONTROL(cl, CLSET_RETRY_TIMEOUT, (char *)(void *)&wait); 208 return (cl); 209 } 210 211 CLIENT * 212 clntudp_create(raddr, program, version, wait, sockp) 213 struct sockaddr_in *raddr; 214 u_long program; 215 u_long version; 216 struct timeval wait; 217 int *sockp; 218 { 219 return clntudp_bufcreate(raddr, program, version, wait, sockp, 220 UDPMSGSIZE, UDPMSGSIZE); 221 } 222 223 CLIENT * 224 clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz) 225 struct sockaddr_in *raddr; 226 u_long prog; 227 u_long vers; 228 int *sockp; 229 u_int sendsz; 230 u_int recvsz; 231 { 232 return clnt_com_create(raddr, (rpcprog_t)prog, (rpcvers_t)vers, sockp, 233 sendsz, recvsz, "tcp"); 234 } 235 236 CLIENT * 237 clntraw_create(prog, vers) 238 u_long prog; 239 u_long vers; 240 { 241 return clnt_raw_create((rpcprog_t)prog, (rpcvers_t)vers); 242 } 243 244 /* 245 * A common server create routine 246 */ 247 static SVCXPRT * 248 svc_com_create(fd, sendsize, recvsize, netid) 249 int fd; 250 u_int sendsize; 251 u_int recvsize; 252 char *netid; 253 { 254 struct netconfig *nconf; 255 SVCXPRT *svc; 256 int madefd = FALSE; 257 int port; 258 struct sockaddr_in sccsin; 259 260 _DIAGASSERT(netid != NULL); 261 262 if ((nconf = __rpc_getconfip(netid)) == NULL) { 263 (void) syslog(LOG_ERR, "Could not get %s transport", netid); 264 return (NULL); 265 } 266 if (fd == RPC_ANYSOCK) { 267 fd = __rpc_nconf2fd(nconf); 268 if (fd == -1) { 269 (void) freenetconfigent(nconf); 270 (void) syslog(LOG_ERR, 271 "svc%s_create: could not open connection", netid); 272 return (NULL); 273 } 274 madefd = TRUE; 275 } 276 277 memset(&sccsin, 0, sizeof sccsin); 278 sccsin.sin_family = AF_INET; 279 bindresvport(fd, &sccsin); 280 listen(fd, SOMAXCONN); 281 svc = svc_tli_create(fd, nconf, NULL, sendsize, recvsize); 282 (void) freenetconfigent(nconf); 283 if (svc == NULL) { 284 if (madefd) 285 (void) close(fd); 286 return (NULL); 287 } 288 port = (((struct sockaddr_in *)svc->xp_ltaddr.buf)->sin_port); 289 svc->xp_port = ntohs(port); 290 return (svc); 291 } 292 293 SVCXPRT * 294 svctcp_create(fd, sendsize, recvsize) 295 int fd; 296 u_int sendsize; 297 u_int recvsize; 298 { 299 return svc_com_create(fd, sendsize, recvsize, "tcp"); 300 } 301 302 SVCXPRT * 303 svcudp_bufcreate(fd, sendsz, recvsz) 304 int fd; 305 u_int sendsz, recvsz; 306 { 307 return svc_com_create(fd, sendsz, recvsz, "udp"); 308 } 309 310 SVCXPRT * 311 svcfd_create(fd, sendsize, recvsize) 312 int fd; 313 u_int sendsize; 314 u_int recvsize; 315 { 316 return svc_fd_create(fd, sendsize, recvsize); 317 } 318 319 320 SVCXPRT * 321 svcudp_create(fd) 322 int fd; 323 { 324 return svc_com_create(fd, UDPMSGSIZE, UDPMSGSIZE, "udp"); 325 } 326 327 SVCXPRT * 328 svcraw_create() 329 { 330 return svc_raw_create(); 331 } 332 333 int 334 get_myaddress(addr) 335 struct sockaddr_in *addr; 336 { 337 338 _DIAGASSERT(addr != NULL); 339 340 memset((void *) addr, 0, sizeof(*addr)); 341 addr->sin_family = AF_INET; 342 addr->sin_port = htons(PMAPPORT); 343 addr->sin_addr.s_addr = htonl(INADDR_LOOPBACK); 344 return (0); 345 } 346 347 /* 348 * For connectionless "udp" transport. Obsoleted by rpc_call(). 349 */ 350 int 351 callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out) 352 char *host; 353 int prognum, versnum, procnum; 354 xdrproc_t inproc, outproc; 355 char *in, *out; 356 { 357 return (int)rpc_call(host, (rpcprog_t)prognum, (rpcvers_t)versnum, 358 (rpcproc_t)procnum, inproc, in, outproc, out, "udp"); 359 } 360 361 /* 362 * For connectionless kind of transport. Obsoleted by rpc_reg() 363 */ 364 int 365 registerrpc(prognum, versnum, procnum, progname, inproc, outproc) 366 int prognum, versnum, procnum; 367 char *(*progname) __P((char [UDPMSGSIZE])); 368 xdrproc_t inproc, outproc; 369 { 370 return rpc_reg((rpcprog_t)prognum, (rpcvers_t)versnum, 371 (rpcproc_t)procnum, progname, inproc, outproc, "udp"); 372 } 373 374 /* 375 * All the following clnt_broadcast stuff is convulated; it supports 376 * the earlier calling style of the callback function 377 */ 378 #ifdef _REENTRANT 379 static thread_key_t clnt_broadcast_key; 380 #endif 381 static resultproc_t clnt_broadcast_result_main; 382 383 /* 384 * Need to translate the netbuf address into sockaddr_in address. 385 * Dont care about netid here. 386 */ 387 /* ARGSUSED */ 388 static bool_t 389 rpc_wrap_bcast(resultp, addr, nconf) 390 char *resultp; /* results of the call */ 391 struct netbuf *addr; /* address of the guy who responded */ 392 struct netconfig *nconf; /* Netconf of the transport */ 393 { 394 resultproc_t clnt_broadcast_result; 395 #ifdef _REENTRANT 396 extern int __isthreaded; 397 #endif 398 399 _DIAGASSERT(resultp != NULL); 400 _DIAGASSERT(addr != NULL); 401 _DIAGASSERT(nconf != NULL); 402 403 if (strcmp(nconf->nc_netid, "udp")) 404 return (FALSE); 405 #ifdef _REENTRANT 406 if (__isthreaded == 0) 407 clnt_broadcast_result = clnt_broadcast_result_main; 408 else 409 clnt_broadcast_result = thr_getspecific(clnt_broadcast_key); 410 #else 411 clnt_broadcast_result = clnt_broadcast_result_main; 412 #endif 413 return (*clnt_broadcast_result)(resultp, 414 (struct sockaddr_in *)addr->buf); 415 } 416 417 #ifdef _REENTRANT 418 static once_t clnt_broadcast_once = ONCE_INITIALIZER; 419 420 static void 421 clnt_broadcast_setup(void) 422 { 423 424 thr_keycreate(&clnt_broadcast_key, free); 425 } 426 #endif 427 428 /* 429 * Broadcasts on UDP transport. Obsoleted by rpc_broadcast(). 430 */ 431 enum clnt_stat 432 clnt_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, eachresult) 433 u_long prog; /* program number */ 434 u_long vers; /* version number */ 435 u_long proc; /* procedure number */ 436 xdrproc_t xargs; /* xdr routine for args */ 437 caddr_t argsp; /* pointer to args */ 438 xdrproc_t xresults; /* xdr routine for results */ 439 caddr_t resultsp; /* pointer to results */ 440 resultproc_t eachresult; /* call with each result obtained */ 441 { 442 #ifdef _REENTRANT 443 extern int __isthreaded; 444 445 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 Tue Sep 23 22:09:46 GMT 2025