rpc_soc.c revision 1.3
1 /* $NetBSD: rpc_soc.c,v 1.3 2000/06/03 14:30:11 fvdl 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 <netinet/in.h> 66 #include <netdb.h> 67 #include <errno.h> 68 #include <syslog.h> 69 #include <stdlib.h> 70 #include <unistd.h> 71 72 #include "rpc_com.h" 73 74 #ifdef __weak_alias 75 __weak_alias(clntudp_bufcreate,_clntudp_bufcreate) 76 __weak_alias(clntudp_create,_clntudp_create) 77 __weak_alias(clnttcp_create,_clnttcp_create) 78 __weak_alias(clntraw_create,_clntraw_create) 79 __weak_alias(get_myaddress,_get_myaddress) 80 __weak_alias(svcfd_create,_svcfd_create) 81 __weak_alias(svcudp_bufcreate,_svcudp_bufcreate) 82 __weak_alias(svcudp_create,_svcudp_create) 83 __weak_alias(svctcp_create,_svctcp_create) 84 __weak_alias(svcraw_create,_svcraw_create) 85 __weak_alias(callrpc,_callrpc) 86 __weak_alias(registerrpc,_registerrpc) 87 __weak_alias(clnt_broadcast,_clnt_broadcast) 88 #endif 89 90 #ifdef __REENT 91 extern mutex_t rpcsoc_lock; 92 #endif 93 94 static CLIENT *clnt_com_create __P((struct sockaddr_in *, rpcprog_t, rpcvers_t, 95 int *, u_int, u_int, char *)); 96 static SVCXPRT *svc_com_create __P((int, u_int, u_int, char *)); 97 static bool_t rpc_wrap_bcast __P((char *, struct netbuf *, struct netconfig *)); 98 99 /* 100 * A common clnt create routine 101 */ 102 static CLIENT * 103 clnt_com_create(raddr, prog, vers, sockp, sendsz, recvsz, tp) 104 struct sockaddr_in *raddr; 105 rpcprog_t prog; 106 rpcvers_t vers; 107 int *sockp; 108 u_int sendsz; 109 u_int recvsz; 110 char *tp; 111 { 112 CLIENT *cl; 113 int madefd = FALSE; 114 int fd = *sockp; 115 struct netconfig *nconf; 116 struct netbuf bindaddr; 117 118 mutex_lock(&rpcsoc_lock); 119 if ((nconf = __rpc_getconfip(tp)) == NULL) { 120 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 121 mutex_unlock(&rpcsoc_lock); 122 return ((CLIENT *)NULL); 123 } 124 if (fd == RPC_ANYSOCK) { 125 fd = __rpc_nconf2fd(nconf); 126 if (fd == -1) 127 goto syserror; 128 madefd = TRUE; 129 } 130 131 if (raddr->sin_port == 0) { 132 u_int proto; 133 u_short sport; 134 135 mutex_unlock(&rpcsoc_lock); /* pmap_getport is recursive */ 136 proto = strcmp(tp, "udp") == 0 ? IPPROTO_UDP : IPPROTO_TCP; 137 sport = pmap_getport(raddr, prog, vers, proto); 138 if (sport == 0) { 139 goto err; 140 } 141 raddr->sin_port = htons(sport); 142 mutex_lock(&rpcsoc_lock); /* pmap_getport is recursive */ 143 } 144 145 /* Transform sockaddr_in to netbuf */ 146 bindaddr.maxlen = bindaddr.len = sizeof (struct sockaddr_in); 147 bindaddr.buf = raddr; 148 149 bindresvport(fd, NULL); 150 cl = clnt_tli_create(fd, nconf, &bindaddr, prog, vers, 151 sendsz, recvsz); 152 if (cl) { 153 if (madefd == TRUE) { 154 /* 155 * The fd should be closed while destroying the handle. 156 */ 157 (void) CLNT_CONTROL(cl, CLSET_FD_CLOSE, (char *)NULL); 158 *sockp = fd; 159 } 160 (void) freenetconfigent(nconf); 161 mutex_unlock(&rpcsoc_lock); 162 return (cl); 163 } 164 goto err; 165 166 syserror: 167 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 168 rpc_createerr.cf_error.re_errno = errno; 169 170 err: if (madefd == TRUE) 171 (void) close(fd); 172 (void) freenetconfigent(nconf); 173 mutex_unlock(&rpcsoc_lock); 174 return ((CLIENT *)NULL); 175 } 176 177 CLIENT * 178 clntudp_bufcreate(raddr, prog, vers, wait, sockp, sendsz, recvsz) 179 register struct sockaddr_in *raddr; 180 u_long prog; 181 u_long vers; 182 struct timeval wait; 183 int *sockp; 184 u_int sendsz; 185 u_int recvsz; 186 { 187 CLIENT *cl; 188 189 cl = clnt_com_create(raddr, prog, vers, sockp, sendsz, recvsz, "udp"); 190 if (cl == (CLIENT *)NULL) { 191 return ((CLIENT *)NULL); 192 } 193 (void) CLNT_CONTROL(cl, CLSET_RETRY_TIMEOUT, (char *)&wait); 194 return (cl); 195 } 196 197 CLIENT * 198 clntudp_create(raddr, program, version, wait, sockp) 199 struct sockaddr_in *raddr; 200 u_long program; 201 u_long version; 202 struct timeval wait; 203 int *sockp; 204 { 205 return clntudp_bufcreate(raddr, program, version, wait, sockp, 206 UDPMSGSIZE, UDPMSGSIZE); 207 } 208 209 CLIENT * 210 clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz) 211 struct sockaddr_in *raddr; 212 u_long prog; 213 u_long vers; 214 register int *sockp; 215 u_int sendsz; 216 u_int recvsz; 217 { 218 return clnt_com_create(raddr, prog, vers, sockp, sendsz, 219 recvsz, "tcp"); 220 } 221 222 CLIENT * 223 clntraw_create(prog, vers) 224 u_long prog; 225 u_long vers; 226 { 227 return clnt_raw_create(prog, vers); 228 } 229 230 /* 231 * A common server create routine 232 */ 233 static SVCXPRT * 234 svc_com_create(fd, sendsize, recvsize, netid) 235 register int fd; 236 u_int sendsize; 237 u_int recvsize; 238 char *netid; 239 { 240 struct netconfig *nconf; 241 SVCXPRT *svc; 242 int madefd = FALSE; 243 int port; 244 struct sockaddr_in sin; 245 246 if ((nconf = __rpc_getconfip(netid)) == NULL) { 247 (void) syslog(LOG_ERR, "Could not get %s transport", netid); 248 return ((SVCXPRT *)NULL); 249 } 250 if (fd == RPC_ANYSOCK) { 251 fd = __rpc_nconf2fd(nconf); 252 if (fd == -1) { 253 (void) freenetconfigent(nconf); 254 (void) syslog(LOG_ERR, 255 "svc%s_create: could not open connection", netid); 256 return ((SVCXPRT *)NULL); 257 } 258 madefd = TRUE; 259 } 260 261 memset(&sin, 0, sizeof sin); 262 sin.sin_family = AF_INET; 263 bindresvport(fd, &sin); 264 svc = svc_tli_create(fd, nconf, (struct t_bind *)NULL, 265 sendsize, recvsize); 266 (void) freenetconfigent(nconf); 267 if (svc == (SVCXPRT *)NULL) { 268 if (madefd) 269 (void) close(fd); 270 return ((SVCXPRT *)NULL); 271 } 272 port = (((struct sockaddr_in *)svc->xp_ltaddr.buf)->sin_port); 273 svc->xp_port = ntohs(port); 274 return (svc); 275 } 276 277 SVCXPRT * 278 svctcp_create(fd, sendsize, recvsize) 279 register int fd; 280 u_int sendsize; 281 u_int recvsize; 282 { 283 return svc_com_create(fd, sendsize, recvsize, "tcp"); 284 } 285 286 SVCXPRT * 287 svcudp_bufcreate(fd, sendsz, recvsz) 288 register int fd; 289 u_int sendsz, recvsz; 290 { 291 return svc_com_create(fd, sendsz, recvsz, "udp"); 292 } 293 294 SVCXPRT * 295 svcfd_create(fd, sendsize, recvsize) 296 int fd; 297 u_int sendsize; 298 u_int recvsize; 299 { 300 return svc_fd_create(fd, sendsize, recvsize); 301 } 302 303 304 SVCXPRT * 305 svcudp_create(fd) 306 register int fd; 307 { 308 return svc_com_create(fd, UDPMSGSIZE, UDPMSGSIZE, "udp"); 309 } 310 311 SVCXPRT * 312 svcraw_create() 313 { 314 return svc_raw_create(); 315 } 316 317 int 318 get_myaddress(addr) 319 struct sockaddr_in *addr; 320 { 321 memset((void *) addr, 0, sizeof(*addr)); 322 addr->sin_family = AF_INET; 323 addr->sin_port = htons(PMAPPORT); 324 addr->sin_addr.s_addr = htonl(INADDR_LOOPBACK); 325 return (0); 326 } 327 328 /* 329 * For connectionless "udp" transport. Obsoleted by rpc_call(). 330 */ 331 int 332 callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out) 333 char *host; 334 int prognum, versnum, procnum; 335 xdrproc_t inproc, outproc; 336 char *in, *out; 337 { 338 return (int)rpc_call(host, (u_long)prognum, (u_long)versnum, 339 (u_long)procnum, inproc, in, outproc, out, "udp"); 340 } 341 342 /* 343 * For connectionless kind of transport. Obsoleted by rpc_reg() 344 */ 345 int 346 registerrpc(prognum, versnum, procnum, progname, inproc, outproc) 347 int prognum, versnum, procnum; 348 char *(*progname) __P((char [UDPMSGSIZE])); 349 xdrproc_t inproc, outproc; 350 { 351 return rpc_reg((u_long)prognum, (u_long)versnum, (u_long)procnum, 352 progname, inproc, outproc, "udp"); 353 } 354 355 /* 356 * All the following clnt_broadcast stuff is convulated; it supports 357 * the earlier calling style of the callback function 358 */ 359 #ifdef __REENT 360 static thread_key_t clnt_broadcast_key; 361 #endif 362 static resultproc_t clnt_broadcast_result_main; 363 364 /* 365 * Need to translate the netbuf address into sockaddr_in address. 366 * Dont care about netid here. 367 */ 368 /* ARGSUSED */ 369 static bool_t 370 rpc_wrap_bcast(resultp, addr, nconf) 371 char *resultp; /* results of the call */ 372 struct netbuf *addr; /* address of the guy who responded */ 373 struct netconfig *nconf; /* Netconf of the transport */ 374 { 375 resultproc_t clnt_broadcast_result; 376 377 if (strcmp(nconf->nc_netid, "udp")) 378 return (FALSE); 379 #ifdef __REENT 380 if (_thr_main()) 381 clnt_broadcast_result = clnt_broadcast_result_main; 382 else 383 thr_getspecific(clnt_broadcast_key, 384 (void **) &clnt_broadcast_result); 385 #else 386 clnt_broadcast_result = clnt_broadcast_result_main; 387 #endif 388 return (*clnt_broadcast_result)(resultp, 389 (struct sockaddr_in *)addr->buf); 390 } 391 392 /* 393 * Broadcasts on UDP transport. Obsoleted by rpc_broadcast(). 394 */ 395 enum clnt_stat 396 clnt_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, eachresult) 397 u_long prog; /* program number */ 398 u_long vers; /* version number */ 399 u_long proc; /* procedure number */ 400 xdrproc_t xargs; /* xdr routine for args */ 401 caddr_t argsp; /* pointer to args */ 402 xdrproc_t xresults; /* xdr routine for results */ 403 caddr_t resultsp; /* pointer to results */ 404 resultproc_t eachresult; /* call with each result obtained */ 405 { 406 #ifdef __REENT 407 extern mutex_t tsd_lock; 408 #endif 409 410 #ifdef __REENT 411 if (_thr_main()) 412 clnt_broadcast_result_main = eachresult; 413 else { 414 if (clnt_broadcast_key == 0) { 415 mutex_lock(&tsd_lock); 416 if (clnt_broadcast_key == 0) 417 thr_keycreate(&clnt_broadcast_key, free); 418 mutex_unlock(&tsd_lock); 419 } 420 thr_setspecific(clnt_broadcast_key, (void *) eachresult); 421 } 422 #else 423 clnt_broadcast_result_main = eachresult; 424 #endif 425 return rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, 426 resultsp, (resultproc_t) rpc_wrap_bcast, "udp"); 427 } 428 429 #endif /* PORTMAP */ 430
Indexes created Mon Sep 22 13:09:51 GMT 2025