rpc_soc.c revision 1.2
1 /* $NetBSD: rpc_soc.c,v 1.2 2000/06/03 13:04:14 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(svcudp_bufcreate,_svcudp_bufcreate) 81 __weak_alias(svcudp_create,_svcudp_create) 82 __weak_alias(svctcp_create,_svctcp_create) 83 __weak_alias(svcraw_create,_svcraw_create) 84 __weak_alias(callrpc,_callrpc) 85 __weak_alias(registerrpc,_registerrpc) 86 __weak_alias(clnt_broadcast,_clnt_broadcast) 87 #endif 88 89 #ifdef __REENT 90 extern mutex_t rpcsoc_lock; 91 #endif 92 93 static CLIENT *clnt_com_create __P((struct sockaddr_in *, rpcprog_t, rpcvers_t, 94 int *, u_int, u_int, char *)); 95 static SVCXPRT *svc_com_create __P((int, u_int, u_int, char *)); 96 static bool_t rpc_wrap_bcast __P((char *, struct netbuf *, struct netconfig *)); 97 98 /* 99 * A common clnt create routine 100 */ 101 static CLIENT * 102 clnt_com_create(raddr, prog, vers, sockp, sendsz, recvsz, tp) 103 struct sockaddr_in *raddr; 104 rpcprog_t prog; 105 rpcvers_t vers; 106 int *sockp; 107 u_int sendsz; 108 u_int recvsz; 109 char *tp; 110 { 111 CLIENT *cl; 112 int madefd = FALSE; 113 int fd = *sockp; 114 struct netconfig *nconf; 115 struct netbuf bindaddr; 116 117 mutex_lock(&rpcsoc_lock); 118 if ((nconf = __rpc_getconfip(tp)) == NULL) { 119 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 120 mutex_unlock(&rpcsoc_lock); 121 return ((CLIENT *)NULL); 122 } 123 if (fd == RPC_ANYSOCK) { 124 fd = __rpc_nconf2fd(nconf); 125 if (fd == -1) 126 goto syserror; 127 madefd = TRUE; 128 } 129 130 if (raddr->sin_port == 0) { 131 u_int proto; 132 u_short sport; 133 134 mutex_unlock(&rpcsoc_lock); /* pmap_getport is recursive */ 135 proto = strcmp(tp, "udp") == 0 ? IPPROTO_UDP : IPPROTO_TCP; 136 sport = pmap_getport(raddr, prog, vers, proto); 137 if (sport == 0) { 138 goto err; 139 } 140 raddr->sin_port = htons(sport); 141 mutex_lock(&rpcsoc_lock); /* pmap_getport is recursive */ 142 } 143 144 /* Transform sockaddr_in to netbuf */ 145 bindaddr.maxlen = bindaddr.len = sizeof (struct sockaddr_in); 146 bindaddr.buf = raddr; 147 148 bindresvport(fd, NULL); 149 cl = clnt_tli_create(fd, nconf, &bindaddr, prog, vers, 150 sendsz, recvsz); 151 if (cl) { 152 if (madefd == TRUE) { 153 /* 154 * The fd should be closed while destroying the handle. 155 */ 156 (void) CLNT_CONTROL(cl, CLSET_FD_CLOSE, (char *)NULL); 157 *sockp = fd; 158 } 159 (void) freenetconfigent(nconf); 160 mutex_unlock(&rpcsoc_lock); 161 return (cl); 162 } 163 goto err; 164 165 syserror: 166 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 167 rpc_createerr.cf_error.re_errno = errno; 168 169 err: if (madefd == TRUE) 170 (void) close(fd); 171 (void) freenetconfigent(nconf); 172 mutex_unlock(&rpcsoc_lock); 173 return ((CLIENT *)NULL); 174 } 175 176 CLIENT * 177 clntudp_bufcreate(raddr, prog, vers, wait, sockp, sendsz, recvsz) 178 register struct sockaddr_in *raddr; 179 u_long prog; 180 u_long vers; 181 struct timeval wait; 182 int *sockp; 183 u_int sendsz; 184 u_int recvsz; 185 { 186 CLIENT *cl; 187 188 cl = clnt_com_create(raddr, prog, vers, sockp, sendsz, recvsz, "udp"); 189 if (cl == (CLIENT *)NULL) { 190 return ((CLIENT *)NULL); 191 } 192 (void) CLNT_CONTROL(cl, CLSET_RETRY_TIMEOUT, (char *)&wait); 193 return (cl); 194 } 195 196 CLIENT * 197 clntudp_create(raddr, program, version, wait, sockp) 198 struct sockaddr_in *raddr; 199 u_long program; 200 u_long version; 201 struct timeval wait; 202 int *sockp; 203 { 204 return clntudp_bufcreate(raddr, program, version, wait, sockp, 205 UDPMSGSIZE, UDPMSGSIZE); 206 } 207 208 CLIENT * 209 clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz) 210 struct sockaddr_in *raddr; 211 u_long prog; 212 u_long vers; 213 register int *sockp; 214 u_int sendsz; 215 u_int recvsz; 216 { 217 return clnt_com_create(raddr, prog, vers, sockp, sendsz, 218 recvsz, "tcp"); 219 } 220 221 CLIENT * 222 clntraw_create(prog, vers) 223 u_long prog; 224 u_long vers; 225 { 226 return clnt_raw_create(prog, vers); 227 } 228 229 /* 230 * A common server create routine 231 */ 232 static SVCXPRT * 233 svc_com_create(fd, sendsize, recvsize, netid) 234 register int fd; 235 u_int sendsize; 236 u_int recvsize; 237 char *netid; 238 { 239 struct netconfig *nconf; 240 SVCXPRT *svc; 241 int madefd = FALSE; 242 int port; 243 struct sockaddr_in sin; 244 245 if ((nconf = __rpc_getconfip(netid)) == NULL) { 246 (void) syslog(LOG_ERR, "Could not get %s transport", netid); 247 return ((SVCXPRT *)NULL); 248 } 249 if (fd == RPC_ANYSOCK) { 250 fd = __rpc_nconf2fd(nconf); 251 if (fd == -1) { 252 (void) freenetconfigent(nconf); 253 (void) syslog(LOG_ERR, 254 "svc%s_create: could not open connection", netid); 255 return ((SVCXPRT *)NULL); 256 } 257 madefd = TRUE; 258 } 259 260 memset(&sin, 0, sizeof sin); 261 sin.sin_family = AF_INET; 262 bindresvport(fd, &sin); 263 svc = svc_tli_create(fd, nconf, (struct t_bind *)NULL, 264 sendsize, recvsize); 265 (void) freenetconfigent(nconf); 266 if (svc == (SVCXPRT *)NULL) { 267 if (madefd) 268 (void) close(fd); 269 return ((SVCXPRT *)NULL); 270 } 271 port = (((struct sockaddr_in *)svc->xp_ltaddr.buf)->sin_port); 272 svc->xp_port = ntohs(port); 273 return (svc); 274 } 275 276 SVCXPRT * 277 svctcp_create(fd, sendsize, recvsize) 278 register int fd; 279 u_int sendsize; 280 u_int recvsize; 281 { 282 return svc_com_create(fd, sendsize, recvsize, "tcp"); 283 } 284 285 SVCXPRT * 286 svcudp_bufcreate(fd, sendsz, recvsz) 287 register int fd; 288 u_int sendsz, recvsz; 289 { 290 return svc_com_create(fd, sendsz, recvsz, "udp"); 291 } 292 293 SVCXPRT * 294 svcfd_create(fd, sendsize, recvsize) 295 int fd; 296 u_int sendsize; 297 u_int recvsize; 298 { 299 return svc_fd_create(fd, sendsize, recvsize); 300 } 301 302 303 SVCXPRT * 304 svcudp_create(fd) 305 register int fd; 306 { 307 return svc_com_create(fd, UDPMSGSIZE, UDPMSGSIZE, "udp"); 308 } 309 310 SVCXPRT * 311 svcraw_create() 312 { 313 return svc_raw_create(); 314 } 315 316 int 317 get_myaddress(addr) 318 struct sockaddr_in *addr; 319 { 320 memset((void *) addr, 0, sizeof(*addr)); 321 addr->sin_family = AF_INET; 322 addr->sin_port = htons(PMAPPORT); 323 addr->sin_addr.s_addr = htonl(INADDR_LOOPBACK); 324 return (0); 325 } 326 327 /* 328 * For connectionless "udp" transport. Obsoleted by rpc_call(). 329 */ 330 int 331 callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out) 332 char *host; 333 int prognum, versnum, procnum; 334 xdrproc_t inproc, outproc; 335 char *in, *out; 336 { 337 return (int)rpc_call(host, (u_long)prognum, (u_long)versnum, 338 (u_long)procnum, inproc, in, outproc, out, "udp"); 339 } 340 341 /* 342 * For connectionless kind of transport. Obsoleted by rpc_reg() 343 */ 344 int 345 registerrpc(prognum, versnum, procnum, progname, inproc, outproc) 346 int prognum, versnum, procnum; 347 char *(*progname) __P((char [UDPMSGSIZE])); 348 xdrproc_t inproc, outproc; 349 { 350 return rpc_reg((u_long)prognum, (u_long)versnum, (u_long)procnum, 351 progname, inproc, outproc, "udp"); 352 } 353 354 /* 355 * All the following clnt_broadcast stuff is convulated; it supports 356 * the earlier calling style of the callback function 357 */ 358 #ifdef __REENT 359 static thread_key_t clnt_broadcast_key; 360 #endif 361 static resultproc_t clnt_broadcast_result_main; 362 363 /* 364 * Need to translate the netbuf address into sockaddr_in address. 365 * Dont care about netid here. 366 */ 367 /* ARGSUSED */ 368 static bool_t 369 rpc_wrap_bcast(resultp, addr, nconf) 370 char *resultp; /* results of the call */ 371 struct netbuf *addr; /* address of the guy who responded */ 372 struct netconfig *nconf; /* Netconf of the transport */ 373 { 374 resultproc_t clnt_broadcast_result; 375 376 if (strcmp(nconf->nc_netid, "udp")) 377 return (FALSE); 378 #ifdef __REENT 379 if (_thr_main()) 380 clnt_broadcast_result = clnt_broadcast_result_main; 381 else 382 thr_getspecific(clnt_broadcast_key, 383 (void **) &clnt_broadcast_result); 384 #else 385 clnt_broadcast_result = clnt_broadcast_result_main; 386 #endif 387 return (*clnt_broadcast_result)(resultp, 388 (struct sockaddr_in *)addr->buf); 389 } 390 391 /* 392 * Broadcasts on UDP transport. Obsoleted by rpc_broadcast(). 393 */ 394 enum clnt_stat 395 clnt_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, eachresult) 396 u_long prog; /* program number */ 397 u_long vers; /* version number */ 398 u_long proc; /* procedure number */ 399 xdrproc_t xargs; /* xdr routine for args */ 400 caddr_t argsp; /* pointer to args */ 401 xdrproc_t xresults; /* xdr routine for results */ 402 caddr_t resultsp; /* pointer to results */ 403 resultproc_t eachresult; /* call with each result obtained */ 404 { 405 #ifdef __REENT 406 extern mutex_t tsd_lock; 407 #endif 408 409 #ifdef __REENT 410 if (_thr_main()) 411 clnt_broadcast_result_main = eachresult; 412 else { 413 if (clnt_broadcast_key == 0) { 414 mutex_lock(&tsd_lock); 415 if (clnt_broadcast_key == 0) 416 thr_keycreate(&clnt_broadcast_key, free); 417 mutex_unlock(&tsd_lock); 418 } 419 thr_setspecific(clnt_broadcast_key, (void *) eachresult); 420 } 421 #else 422 clnt_broadcast_result_main = eachresult; 423 #endif 424 return rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, 425 resultsp, (resultproc_t) rpc_wrap_bcast, "udp"); 426 } 427 428 #endif /* PORTMAP */ 429
Indexes created Wed Sep 24 02:09:48 GMT 2025