1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user. 8 * 9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 12 * 13 * Sun RPC is provided with no support and without any obligation on the 14 * part of Sun Microsystems, Inc. to assist in its use, correction, 15 * modification or enhancement. 16 * 17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 19 * OR ANY PART THEREOF. 20 * 21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 22 * or profits or other special, indirect and consequential damages, even if 23 * Sun has been advised of the possibility of such damages. 24 * 25 * Sun Microsystems, Inc. 26 * 2550 Garcia Avenue 27 * Mountain View, California 94043 28 */ 29 30 #if 0 31 #ifndef lint 32 #ident "@(#)rpc_svcout.c 1.4 90/04/13 SMI" 33 static char sccsid[] = "@(#)rpc_svcout.c 1.29 89/03/30 (C) 1987 SMI"; 34 #endif 35 #endif 36 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 /* 41 * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler 42 * Copyright (C) 1987, Sun Microsystems, Inc. 43 */ 44 #include <stdio.h> 45 #include <string.h> 46 #include "rpc_parse.h" 47 #include "rpc_scan.h" 48 #include "rpc_util.h" 49 50 static char RQSTP[] = "rqstp"; 51 static char TRANSP[] = "transp"; 52 static char ARG[] = "argument"; 53 static char RESULT[] = "result"; 54 static char ROUTINE[] = "local"; 55 static char RETVAL[] = "retval"; 56 57 char _errbuf[256]; /* For all messages */ 58 59 void internal_proctype( proc_list * ); 60 static void write_real_program( definition * ); 61 static void write_program(definition *, const char *); 62 static void printerr(const char *, const char *); 63 static void printif(const char *, const char *, const char *, const char *); 64 static void write_inetmost(const char *); 65 static void print_return(const char *); 66 static void print_pmapunset(const char *); 67 static void print_err_message(const char *); 68 static void write_timeout_func( void ); 69 static void write_pm_most(const char *, int); 70 static void write_rpc_svc_fg(const char *, const char *); 71 static void open_log_file(const char *, const char *); 72 static void write_msg_out( void ); 73 74 75 static void 76 p_xdrfunc(const char *rname, const char *typename) 77 { 78 f_print(fout, "\t\txdr_%s = (xdrproc_t) xdr_%s;\n", 79 rname, stringfix(typename)); 80 } 81 82 void 83 internal_proctype(proc_list *plist) 84 { 85 f_print(fout, "static "); 86 ptype(plist->res_prefix, plist->res_type, 1); 87 f_print(fout, "*"); 88 } 89 90 91 /* 92 * write most of the service, that is, everything but the registrations. 93 */ 94 void 95 write_most(const char *infile, int netflag, int nomain) 96 { 97 if (inetdflag || pmflag) { 98 const char *var_type; 99 var_type = (nomain? "extern" : "static"); 100 f_print(fout, "%s int _rpcpmstart;", var_type); 101 f_print(fout, "\t\t/* Started by a port monitor ? */\n"); 102 if (!tirpcflag || tirpc_socket) { 103 f_print(fout, "%s int _rpcfdtype;", var_type); 104 f_print(fout, "\n\t\t /* Whether Stream or \ 105 Datagram ? */\n"); 106 } 107 108 if (timerflag) { 109 f_print(fout, " /* States a server can be in \ 110 wrt request */\n\n"); 111 f_print(fout, "#define\t_IDLE 0\n"); 112 f_print(fout, "#define\t_SERVED 1\n"); 113 f_print(fout, "#define\t_SERVING 2\n\n"); 114 f_print(fout, "static int _rpcsvcstate = _IDLE;"); 115 f_print(fout, "\t /* Set when a request is \ 116 serviced */\n"); 117 118 if (mtflag) { 119 f_print(fout, "mutex_t _svcstate_lock;"); 120 f_print(fout, "\t\t\t/* Mutex lock for variable _rpcsvcstate */\n"); 121 122 } 123 124 } 125 126 write_svc_aux(nomain); 127 } 128 /* write out dispatcher and stubs */ 129 write_programs(nomain? (char *)NULL : "static"); 130 131 if (nomain) 132 return; 133 134 f_print(fout, "\nint\n"); 135 f_print(fout, "main()\n"); 136 f_print(fout, "{\n"); 137 if (inetdflag) { 138 write_inetmost(infile); 139 /* Includes call to write_rpc_svc_fg() */ 140 } else { 141 if (tirpcflag) { 142 if (netflag) { 143 f_print(fout, 144 "\tregister SVCXPRT *%s;\n", TRANSP); 145 f_print(fout, 146 "\tstruct netconfig *nconf = NULL;\n"); 147 } 148 f_print(fout, "\tpid_t pid;\n"); 149 f_print(fout, "\tint i;\n"); 150 if (pmflag) { 151 if (tirpc_socket) { 152 f_print(fout, "\tstruct sockaddr_storage saddr;\n"); 153 f_print(fout, "\tsocklen_t asize = sizeof (saddr);\n\n"); 154 } else 155 f_print(fout, "\tchar mname[FMNAMESZ + 1];\n\n"); 156 } 157 158 if (mtflag & timerflag) 159 f_print(fout, "\tmutex_init(&_svcstate_lock, USYNC_THREAD, NULL);\n"); 160 if (pmflag) { 161 write_pm_most(infile, netflag); 162 f_print(fout, "\telse {\n"); 163 write_rpc_svc_fg(infile, "\t\t"); 164 f_print(fout, "\t}\n"); 165 } else 166 write_rpc_svc_fg(infile, "\t\t"); 167 168 } else { 169 f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP); 170 f_print(fout, "\n"); 171 print_pmapunset("\t"); 172 } 173 } 174 175 if (logflag && !inetdflag) { 176 open_log_file(infile, "\t"); 177 } 178 } 179 180 /* 181 * write a registration for the given transport 182 */ 183 void 184 write_netid_register(const char *transp) 185 { 186 list *l; 187 definition *def; 188 version_list *vp; 189 const char *sp; 190 char tmpbuf[32]; 191 192 sp = ""; 193 f_print(fout, "\n"); 194 f_print(fout, "%s\tnconf = getnetconfigent(\"%s\");\n", sp, transp); 195 f_print(fout, "%s\tif (nconf == NULL) {\n", sp); 196 (void) sprintf(_errbuf, "cannot find %s netid.", transp); 197 sprintf(tmpbuf, "%s\t\t", sp); 198 print_err_message(tmpbuf); 199 f_print(fout, "%s\t\texit(1);\n", sp); 200 f_print(fout, "%s\t}\n", sp); 201 if (tirpcflag) { 202 f_print(fout, "%s\t%s = svc_tli_create(RPC_ANYFD, ", 203 sp, TRANSP); 204 f_print(fout,"nconf, 0, RPC_MAXDATASIZE, RPC_MAXDATASIZE);\n"); 205 } else { 206 f_print(fout, 207 "%s\t%s = svc_tli_create(RPC_ANYFD, nconf, 0, 0, 0);\n", 208 sp, TRANSP); 209 } 210 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 211 (void) sprintf(_errbuf, "cannot create %s service.", transp); 212 print_err_message(tmpbuf); 213 f_print(fout, "%s\t\texit(1);\n", sp); 214 f_print(fout, "%s\t}\n", sp); 215 216 for (l = defined; l != NULL; l = l->next) { 217 def = (definition *) l->val; 218 if (def->def_kind != DEF_PROGRAM) { 219 continue; 220 } 221 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 222 f_print(fout, 223 "%s\t(void) rpcb_unset(%s, %s, nconf);\n", 224 sp, def->def_name, vp->vers_name); 225 f_print(fout, 226 "%s\tif (!svc_reg(%s, %s, %s, ", 227 sp, TRANSP, def->def_name, vp->vers_name); 228 pvname(def->def_name, vp->vers_num); 229 f_print(fout, ", nconf)) {\n"); 230 (void) sprintf(_errbuf, 231 "unable to register (%s, %s, %s).", 232 def->def_name, vp->vers_name, transp); 233 print_err_message(tmpbuf); 234 f_print(fout, "%s\t\texit(1);\n", sp); 235 f_print(fout, "%s\t}\n", sp); 236 } 237 } 238 f_print(fout, "%s\tfreenetconfigent(nconf);\n", sp); 239 } 240 241 /* 242 * write a registration for the given transport for TLI 243 */ 244 void 245 write_nettype_register(const char *transp) 246 { 247 list *l; 248 definition *def; 249 version_list *vp; 250 251 for (l = defined; l != NULL; l = l->next) { 252 def = (definition *) l->val; 253 if (def->def_kind != DEF_PROGRAM) { 254 continue; 255 } 256 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 257 f_print(fout, "\tif (!svc_create("); 258 pvname(def->def_name, vp->vers_num); 259 f_print(fout, ", %s, %s, \"%s\")) {\n", 260 def->def_name, vp->vers_name, transp); 261 (void) sprintf(_errbuf, 262 "unable to create (%s, %s) for %s.", 263 def->def_name, vp->vers_name, transp); 264 print_err_message("\t\t"); 265 f_print(fout, "\t\texit(1);\n"); 266 f_print(fout, "\t}\n"); 267 } 268 } 269 } 270 271 /* 272 * write the rest of the service 273 */ 274 void 275 write_rest(void) 276 { 277 f_print(fout, "\n"); 278 if (inetdflag) { 279 f_print(fout, "\tif (%s == (SVCXPRT *)NULL) {\n", TRANSP); 280 (void) sprintf(_errbuf, "could not create a handle"); 281 print_err_message("\t\t"); 282 f_print(fout, "\t\texit(1);\n"); 283 f_print(fout, "\t}\n"); 284 if (timerflag) { 285 f_print(fout, "\tif (_rpcpmstart) {\n"); 286 f_print(fout, 287 "\t\t(void) signal(SIGALRM, closedown);\n"); 288 f_print(fout, "\t\t(void) \ 289 alarm(_RPCSVC_CLOSEDOWN/2);\n"); 290 f_print(fout, "\t}\n"); 291 } 292 } 293 f_print(fout, "\tsvc_run();\n"); 294 (void) sprintf(_errbuf, "svc_run returned"); 295 print_err_message("\t"); 296 f_print(fout, "\texit(1);\n"); 297 f_print(fout, "\t/* NOTREACHED */\n"); 298 f_print(fout, "}\n"); 299 } 300 301 void 302 write_programs(const char *storage) 303 { 304 list *l; 305 definition *def; 306 307 /* write out stubs for procedure definitions */ 308 for (l = defined; l != NULL; l = l->next) { 309 def = (definition *) l->val; 310 if (def->def_kind == DEF_PROGRAM) { 311 write_real_program(def); 312 } 313 } 314 315 /* write out dispatcher for each program */ 316 for (l = defined; l != NULL; l = l->next) { 317 def = (definition *) l->val; 318 if (def->def_kind == DEF_PROGRAM) { 319 write_program(def, storage); 320 } 321 } 322 323 324 } 325 326 /* 327 * write out definition of internal function (e.g. _printmsg_1(...)) 328 * which calls server's defintion of actual function (e.g. printmsg_1(...)). 329 * Unpacks single user argument of printmsg_1 to call-by-value format 330 * expected by printmsg_1. 331 */ 332 static void 333 write_real_program(definition *def) 334 { 335 version_list *vp; 336 proc_list *proc; 337 decl_list *l; 338 339 if (!newstyle) return; /* not needed for old style */ 340 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 341 for (proc = vp->procs; proc != NULL; proc = proc->next) { 342 f_print(fout, "\n"); 343 if (!mtflag) 344 internal_proctype(proc); 345 else 346 f_print(fout, "int"); 347 f_print(fout, "\n_"); 348 pvname(proc->proc_name, vp->vers_num); 349 f_print(fout, "("); 350 /* arg name */ 351 if (proc->arg_num > 1) 352 f_print(fout, proc->args.argname); 353 else 354 ptype(proc->args.decls->decl.prefix, 355 proc->args.decls->decl.type, 0); 356 if (mtflag) { 357 f_print(fout, " *argp, void *%s, struct svc_req *%s)\n", 358 RESULT, RQSTP); 359 360 361 } 362 else 363 f_print(fout, " *argp, struct svc_req *%s)\n", 364 RQSTP); 365 366 f_print(fout, "{\n"); 367 f_print(fout, "\treturn ("); 368 pvname_svc(proc->proc_name, vp->vers_num); 369 f_print(fout, "("); 370 if (proc->arg_num < 2) { /* single argument */ 371 if (!streq(proc->args.decls->decl.type, "void")) 372 f_print(fout, "*argp, "); /* non-void */ 373 } else { 374 for (l = proc->args.decls; l != NULL; 375 l = l->next) 376 f_print(fout, "argp->%s, ", 377 l->decl.name); 378 } 379 if (mtflag) 380 f_print(fout, "%s, ",RESULT); 381 f_print(fout, "%s));\n}\n", RQSTP); 382 } 383 } 384 } 385 386 static void 387 write_program(definition *def, const char *storage) 388 { 389 version_list *vp; 390 proc_list *proc; 391 int filled; 392 393 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 394 f_print(fout, "\n"); 395 if (storage != NULL) { 396 f_print(fout, "%s ", storage); 397 } 398 f_print(fout, "void\n"); 399 pvname(def->def_name, vp->vers_num); 400 401 f_print(fout, "(struct svc_req *%s, ", RQSTP); 402 f_print(fout, "SVCXPRT *%s)\n", TRANSP); 403 f_print(fout, "{\n"); 404 405 filled = 0; 406 f_print(fout, "\tunion {\n"); 407 for (proc = vp->procs; proc != NULL; proc = proc->next) { 408 if (proc->arg_num < 2) { /* single argument */ 409 if (streq(proc->args.decls->decl.type, 410 "void")) { 411 continue; 412 } 413 filled = 1; 414 f_print(fout, "\t\t"); 415 ptype(proc->args.decls->decl.prefix, 416 proc->args.decls->decl.type, 0); 417 pvname(proc->proc_name, vp->vers_num); 418 f_print(fout, "_arg;\n"); 419 420 } else { 421 filled = 1; 422 f_print(fout, "\t\t%s", proc->args.argname); 423 f_print(fout, " "); 424 pvname(proc->proc_name, vp->vers_num); 425 f_print(fout, "_arg;\n"); 426 } 427 } 428 if (!filled) { 429 f_print(fout, "\t\tint fill;\n"); 430 } 431 f_print(fout, "\t} %s;\n", ARG); 432 433 if (mtflag) { 434 f_print(fout, "\tunion {\n"); 435 for (proc = vp->procs; proc != NULL; proc = proc->next) { 436 f_print(fout, "\t\t"); 437 ptype(proc->res_prefix, proc->res_type, 0); 438 pvname(proc->proc_name, vp->vers_num); 439 f_print(fout, "_res;\n"); 440 } 441 f_print(fout, "\t} %s;\n", RESULT); 442 f_print(fout, "\tbool_t %s;\n", RETVAL); 443 444 } else 445 f_print(fout, "\tchar *%s;\n", RESULT); 446 447 f_print(fout, "\txdrproc_t xdr_%s, xdr_%s;\n", ARG, RESULT); 448 if (mtflag) 449 f_print(fout, 450 "\tbool_t (*%s)(char *, void *, struct svc_req *);\n", 451 ROUTINE); 452 else 453 f_print(fout, 454 "\tchar *(*%s)(char *, struct svc_req *);\n", 455 ROUTINE); 456 f_print(fout, "\n"); 457 458 if (timerflag) { 459 if (mtflag) 460 f_print(fout, "\tmutex_lock(&_svcstate_lock);\n"); 461 462 f_print(fout, "\t_rpcsvcstate = _SERVING;\n"); 463 if (mtflag) 464 f_print(fout, "\tmutex_unlock(&_svcstate_lock);\n"); 465 } 466 467 f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP); 468 if (!nullproc(vp->procs)) { 469 f_print(fout, "\tcase NULLPROC:\n"); 470 f_print(fout, 471 "\t\t(void) svc_sendreply(%s,\n\t\t\t" 472 "(xdrproc_t) xdr_void, (char *)NULL);\n", 473 TRANSP); 474 print_return("\t\t"); 475 f_print(fout, "\n"); 476 } 477 for (proc = vp->procs; proc != NULL; proc = proc->next) { 478 f_print(fout, "\tcase %s:\n", proc->proc_name); 479 if (proc->arg_num < 2) { /* single argument */ 480 p_xdrfunc(ARG, proc->args.decls->decl.type); 481 } else { 482 p_xdrfunc(ARG, proc->args.argname); 483 } 484 p_xdrfunc(RESULT, proc->res_type); 485 486 if (mtflag) 487 f_print(fout, 488 "\t\t%s = (bool_t (*) (char *, void *, struct svc_req *))", 489 ROUTINE); 490 else 491 f_print(fout, 492 "\t\t%s = (char *(*)(char *, struct svc_req *)) ", 493 ROUTINE); 494 if (newstyle) { /* new style: calls internal routine */ 495 f_print(fout, "_"); 496 } 497 if (!newstyle) 498 pvname_svc(proc->proc_name, vp->vers_num); 499 else 500 pvname(proc->proc_name, vp->vers_num); 501 f_print(fout, ";\n"); 502 f_print(fout, "\t\tbreak;\n\n"); 503 } 504 f_print(fout, "\tdefault:\n"); 505 printerr("noproc", TRANSP); 506 print_return("\t\t"); 507 f_print(fout, "\t}\n"); 508 509 f_print(fout, 510 "\t(void) memset((char *)&%s, 0, sizeof (%s));\n", 511 ARG, ARG); 512 printif("getargs", TRANSP, "(caddr_t) &", ARG); 513 printerr("decode", TRANSP); 514 print_return("\t\t"); 515 f_print(fout, "\t}\n"); 516 517 if (!mtflag) 518 f_print(fout, "\t%s = (*%s)((char *)&%s, %s);\n", 519 RESULT, ROUTINE, ARG, RQSTP); 520 else 521 f_print(fout, "\t%s = (bool_t) (*%s)((char *)&%s, (void *)&%s, %s);\n", 522 RETVAL, ROUTINE, ARG, RESULT, RQSTP); 523 524 525 if (mtflag) 526 f_print(fout, 527 "\tif (%s > 0 && !svc_sendreply(%s, xdr_%s, (char *)&%s)) {\n", 528 RETVAL, TRANSP, RESULT, RESULT); 529 else 530 f_print(fout, 531 "\tif (%s != NULL && !svc_sendreply(%s, xdr_%s, %s)) {\n", 532 RESULT, TRANSP, RESULT, RESULT); 533 534 printerr("systemerr", TRANSP); 535 f_print(fout, "\t}\n"); 536 537 printif("freeargs", TRANSP, "(caddr_t) &", ARG); 538 (void) sprintf(_errbuf, "unable to free arguments"); 539 print_err_message("\t\t"); 540 f_print(fout, "\t\texit(1);\n"); 541 f_print(fout, "\t}\n"); 542 /* print out free routine */ 543 if (mtflag) { 544 f_print(fout,"\tif (!"); 545 pvname(def->def_name, vp->vers_num); 546 f_print(fout,"_freeresult(%s, xdr_%s, (caddr_t) &%s))\n", 547 TRANSP, RESULT, RESULT); 548 (void) sprintf(_errbuf, "unable to free results"); 549 print_err_message("\t\t"); 550 f_print(fout, "\n"); 551 }; 552 print_return("\t"); 553 f_print(fout, "}\n"); 554 } 555 } 556 557 static void 558 printerr(const char *err, const char *transp) 559 { 560 f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp); 561 } 562 563 static void 564 printif(const char *proc, const char *transp, const char *prefix, 565 const char *arg) 566 { 567 f_print(fout, "\tif (!svc_%s(%s, xdr_%s, (char *)%s%s)) {\n", 568 proc, transp, arg, prefix, arg); 569 } 570 571 int 572 nullproc(proc_list *proc) 573 { 574 for (; proc != NULL; proc = proc->next) { 575 if (streq(proc->proc_num, "0")) { 576 return (1); 577 } 578 } 579 return (0); 580 } 581 582 static void 583 write_inetmost(const char *infile) 584 { 585 f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP); 586 f_print(fout, "\tint sock;\n"); 587 f_print(fout, "\tint proto;\n"); 588 f_print(fout, "\tstruct sockaddr_in saddr;\n"); 589 f_print(fout, "\tsocklen_t asize = sizeof (saddr);\n"); 590 f_print(fout, "\n"); 591 f_print(fout, 592 "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n"); 593 f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n\n"); 594 f_print(fout, "\t\tif (saddr.sin_family != AF_INET)\n"); 595 f_print(fout, "\t\t\texit(1);\n"); 596 f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n"); 597 f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n"); 598 f_print(fout, "\t\t\texit(1);\n"); 599 f_print(fout, "\t\tsock = 0;\n"); 600 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 601 f_print(fout, "\t\tproto = 0;\n"); 602 open_log_file(infile, "\t\t"); 603 f_print(fout, "\t} else {\n"); 604 write_rpc_svc_fg(infile, "\t\t"); 605 f_print(fout, "\t\tsock = RPC_ANYSOCK;\n"); 606 print_pmapunset("\t\t"); 607 f_print(fout, "\t}\n"); 608 } 609 610 static void 611 print_return(const char *space) 612 { 613 if (exitnow) 614 f_print(fout, "%sexit(0);\n", space); 615 else { 616 if (timerflag) { 617 if (mtflag) 618 f_print(fout, "%smutex_lock(&_svcstate_lock);\n", space); 619 f_print(fout, "%s_rpcsvcstate = _SERVED;\n", space); 620 if (mtflag) 621 f_print(fout, "%smutex_unlock(&_svcstate_lock);\n", space); 622 } 623 f_print(fout, "%sreturn;\n", space); 624 } 625 } 626 627 static void 628 print_pmapunset(const char *space) 629 { 630 list *l; 631 definition *def; 632 version_list *vp; 633 634 for (l = defined; l != NULL; l = l->next) { 635 def = (definition *) l->val; 636 if (def->def_kind == DEF_PROGRAM) { 637 for (vp = def->def.pr.versions; vp != NULL; 638 vp = vp->next) { 639 f_print(fout, "%s(void) pmap_unset(%s, %s);\n", 640 space, def->def_name, vp->vers_name); 641 } 642 } 643 } 644 } 645 646 static void 647 print_err_message(const char *space) 648 { 649 if (logflag) 650 f_print(fout, "%ssyslog(LOG_ERR, \"%s\");\n", space, _errbuf); 651 else if (inetdflag || pmflag) 652 f_print(fout, "%s_msgout(\"%s\");\n", space, _errbuf); 653 else 654 f_print(fout, "%sfprintf(stderr, \"%s\");\n", space, _errbuf); 655 } 656 657 /* 658 * Write the server auxiliary function (_msgout, timeout) 659 */ 660 void 661 write_svc_aux(int nomain) 662 { 663 if (!logflag) 664 write_msg_out(); 665 if (!nomain) 666 write_timeout_func(); 667 } 668 669 /* 670 * Write the _msgout function 671 */ 672 673 static void 674 write_msg_out(void) 675 { 676 f_print(fout, "\n"); 677 /* 678 * Avoid making _msgout() static -- it's useful to have it visible 679 * in the toplevel RPC server code. 680 */ 681 f_print(fout, "static\n"); 682 f_print(fout, "void _msgout(const char* msg)\n"); 683 f_print(fout, "{\n"); 684 f_print(fout, "#ifdef RPC_SVC_FG\n"); 685 if (inetdflag || pmflag) 686 f_print(fout, "\tif (_rpcpmstart)\n"); 687 f_print(fout, "\t\tsyslog(LOG_ERR, \"%%s\", msg);\n"); 688 f_print(fout, "\telse\n"); 689 f_print(fout, 690 "\t\t(void) fprintf(stderr, \"%%s\\n\", msg);\n"); 691 f_print(fout, "#else\n"); 692 f_print(fout, "\tsyslog(LOG_ERR, \"%%s\", msg);\n"); 693 f_print(fout, "#endif\n"); 694 f_print(fout, "}\n"); 695 } 696 697 /* 698 * Write the timeout function 699 */ 700 static void 701 write_timeout_func(void) 702 { 703 if (!timerflag) 704 return; 705 706 f_print(fout, "\n"); 707 f_print(fout, "static void\n"); 708 f_print(fout, "closedown(int sig)\n"); 709 f_print(fout, "{\n"); 710 if (mtflag) 711 f_print(fout, "\tmutex_lock(&_svcstate_lock);\n"); 712 f_print(fout, "\tif (_rpcsvcstate == _IDLE) {\n"); 713 f_print(fout, "\t\textern fd_set svc_fdset;\n"); 714 f_print(fout, "\t\tstatic int size;\n"); 715 f_print(fout, "\t\tint i, openfd;\n"); 716 if (tirpcflag && pmflag) { 717 f_print(fout, "\t\tstruct t_info tinfo;\n\n"); 718 f_print(fout, 719 "\t\tif (!t_getinfo(0, &tinfo) && (tinfo.servtype == T_CLTS))\n"); 720 } else { 721 f_print(fout, "\n\t\tif (_rpcfdtype == SOCK_DGRAM)\n"); 722 } 723 f_print(fout, "\t\t\texit(0);\n"); 724 f_print(fout, "\t\tif (size == 0) {\n"); 725 if (tirpcflag) { 726 f_print(fout, "\t\t\tstruct rlimit rl;\n\n"); 727 f_print(fout, "\t\t\trl.rlim_max = 0;\n"); 728 f_print(fout, "\t\t\tgetrlimit(RLIMIT_NOFILE, &rl);\n"); 729 f_print(fout, "\t\t\tif ((size = rl.rlim_max) == 0) {\n"); 730 731 if (mtflag) 732 f_print(fout, "\t\t\t\tmutex_unlock(&_svcstate_lock);\n"); 733 734 f_print(fout, "\t\t\t\treturn;\n\t\t\t}\n"); 735 } else { 736 f_print(fout, "\t\t\tsize = getdtablesize();\n"); 737 } 738 f_print(fout, "\t\t}\n"); 739 f_print(fout, 740 "\t\tfor (i = 0, openfd = 0; i < size && openfd < 2; i++)\n"); 741 f_print(fout, "\t\t\tif (FD_ISSET(i, &svc_fdset))\n"); 742 f_print(fout, "\t\t\t\topenfd++;\n"); 743 f_print(fout, "\t\tif (openfd <= 1)\n"); 744 f_print(fout, "\t\t\texit(0);\n"); 745 f_print(fout, "\t}\n"); 746 f_print(fout, "\tif (_rpcsvcstate == _SERVED)\n"); 747 f_print(fout, "\t\t_rpcsvcstate = _IDLE;\n\n"); 748 if (mtflag) 749 f_print(fout, "\tmutex_unlock(&_svcstate_lock);\n"); 750 751 f_print(fout, "\t(void) signal(SIGALRM, closedown);\n"); 752 f_print(fout, "\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n"); 753 f_print(fout, "}\n"); 754 755 } 756 757 /* 758 * Write the most of port monitor support 759 */ 760 static void 761 write_pm_most(const char *infile, int netflag) 762 { 763 list *l; 764 definition *def; 765 version_list *vp; 766 767 if (tirpc_socket) { 768 f_print(fout, 769 "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n"); 770 f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n"); 771 } else { 772 f_print(fout, "\tif (!ioctl(0, I_LOOK, mname) &&\n"); 773 f_print(fout, "\t\t(!strcmp(mname, \"sockmod\") ||"); 774 f_print(fout, " !strcmp(mname, \"timod\"))) {\n"); 775 } 776 f_print(fout, "\t\tchar *netid;\n"); 777 if (!netflag) { /* Not included by -n option */ 778 f_print(fout, "\t\tstruct netconfig *nconf = NULL;\n"); 779 f_print(fout, "\t\tSVCXPRT *%s;\n", TRANSP); 780 } 781 if (timerflag) 782 f_print(fout, "\t\tint pmclose;\n"); 783 /* 784 * Not necessary, defined in /usr/include/stdlib 785 * f_print(fout, "\t\textern char *getenv();\n"); 786 */ 787 f_print(fout, "\n"); 788 if (tirpc_socket) { 789 f_print(fout, "\t\tif (saddr.ss_family != AF_INET &&\n"); 790 f_print(fout, "\t\t saddr.ss_family != AF_INET6)\n"); 791 f_print(fout, "\t\t\texit(1);\n"); 792 f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n"); 793 f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n"); 794 f_print(fout, "\t\t\texit(1);\n"); 795 } 796 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 797 open_log_file(infile, "\t\t"); 798 f_print(fout, "\n\t\tif ((netid = \ 799 getenv(\"NLSPROVIDER\")) == NULL) {\n"); 800 801 if (timerflag) { 802 f_print(fout, "\t\t/* started from inetd */\n"); 803 f_print(fout, "\t\t\tpmclose = 1;\n"); 804 } 805 f_print(fout, 806 "\t\t} else {\n"); 807 f_print(fout, "\t\t\tif ((nconf = getnetconfigent(netid)) == NULL)\n"); 808 sprintf(_errbuf, "cannot get transport info"); 809 print_err_message("\t\t\t\t"); 810 if (timerflag) { 811 if (tirpc_socket) 812 f_print(fout, "\n\t\t\tpmclose = 1;\t/* XXX */\n"); 813 else 814 f_print(fout, 815 "\n\t\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n"); 816 } 817 f_print(fout, "\t\t}\n"); 818 /* 819 * A kludgy support for inetd services. Inetd only works with 820 * sockmod, and RPC works only with timod, hence all this jugglery 821 */ 822 if (!tirpc_socket) { 823 f_print(fout, "\t\tif (strcmp(mname, \"sockmod\") == 0) {\n"); 824 f_print(fout, "\t\t\tif (ioctl(0, I_POP, 0) || "); 825 f_print(fout, "ioctl(0, I_PUSH, \"timod\")) {\n"); 826 sprintf(_errbuf, "could not get the right module"); 827 print_err_message("\t\t\t\t"); 828 f_print(fout, "\t\t\t\texit(1);\n"); 829 f_print(fout, "\t\t\t}\n"); 830 f_print(fout, "\t\t}\n"); 831 } 832 if (tirpcflag) { 833 f_print(fout, 834 "\t\tif ((%s = svc_tli_create(0, nconf, NULL, \ 835 RPC_MAXDATASIZE, RPC_MAXDATASIZE)) \ 836 == NULL) {\n", 837 TRANSP); 838 } else { 839 f_print(fout, 840 "\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) \ 841 == NULL) {\n", 842 TRANSP); 843 } 844 sprintf(_errbuf, "cannot create server handle"); 845 print_err_message("\t\t\t"); 846 f_print(fout, "\t\t\texit(1);\n"); 847 f_print(fout, "\t\t}\n"); 848 f_print(fout, "\t\tif (nconf)\n"); 849 f_print(fout, "\t\t\tfreenetconfigent(nconf);\n"); 850 for (l = defined; l != NULL; l = l->next) { 851 def = (definition *) l->val; 852 if (def->def_kind != DEF_PROGRAM) { 853 continue; 854 } 855 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 856 f_print(fout, 857 "\t\tif (!svc_reg(%s, %s, %s, ", 858 TRANSP, def->def_name, vp->vers_name); 859 pvname(def->def_name, vp->vers_num); 860 f_print(fout, ", 0)) {\n"); 861 (void) sprintf(_errbuf, "unable to register (%s, %s).", 862 def->def_name, vp->vers_name); 863 print_err_message("\t\t\t"); 864 f_print(fout, "\t\t\texit(1);\n"); 865 f_print(fout, "\t\t}\n"); 866 } 867 } 868 if (timerflag) { 869 f_print(fout, "\t\tif (pmclose) {\n"); 870 f_print(fout, "\t\t\t(void) signal(SIGALRM, closedown);\n"); 871 f_print(fout, "\t\t\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n"); 872 f_print(fout, "\t\t}\n"); 873 } 874 f_print(fout, "\t\tsvc_run();\n"); 875 f_print(fout, "\t\texit(1);\n"); 876 f_print(fout, "\t\t/* NOTREACHED */\n"); 877 f_print(fout, "\t}"); 878 } 879 880 /* 881 * Support for backgrounding the server if self started. 882 */ 883 static void 884 write_rpc_svc_fg(const char *infile, const char *sp) 885 { 886 f_print(fout, "#ifndef RPC_SVC_FG\n"); 887 f_print(fout, "%sint size;\n", sp); 888 if (tirpcflag) 889 f_print(fout, "%sstruct rlimit rl;\n", sp); 890 if (inetdflag) 891 f_print(fout, "%sint pid, i;\n\n", sp); 892 f_print(fout, "%spid = fork();\n", sp); 893 f_print(fout, "%sif (pid < 0) {\n", sp); 894 f_print(fout, "%s\tperror(\"cannot fork\");\n", sp); 895 f_print(fout, "%s\texit(1);\n", sp); 896 f_print(fout, "%s}\n", sp); 897 f_print(fout, "%sif (pid)\n", sp); 898 f_print(fout, "%s\texit(0);\n", sp); 899 /* get number of file descriptors */ 900 if (tirpcflag) { 901 f_print(fout, "%srl.rlim_max = 0;\n", sp); 902 f_print(fout, "%sgetrlimit(RLIMIT_NOFILE, &rl);\n", sp); 903 f_print(fout, "%sif ((size = rl.rlim_max) == 0)\n", sp); 904 f_print(fout, "%s\texit(1);\n", sp); 905 } else { 906 f_print(fout, "%ssize = getdtablesize();\n", sp); 907 } 908 909 f_print(fout, "%sfor (i = 0; i < size; i++)\n", sp); 910 f_print(fout, "%s\t(void) close(i);\n", sp); 911 /* Redirect stderr and stdout to console */ 912 f_print(fout, "%si = open(\"/dev/console\", 2);\n", sp); 913 f_print(fout, "%s(void) dup2(i, 1);\n", sp); 914 f_print(fout, "%s(void) dup2(i, 2);\n", sp); 915 /* This removes control of the controlling terminal */ 916 if (tirpcflag) 917 f_print(fout, "%ssetsid();\n", sp); 918 else { 919 f_print(fout, "%si = open(\"/dev/tty\", 2);\n", sp); 920 f_print(fout, "%sif (i >= 0) {\n", sp); 921 f_print(fout, 922 "%s\t(void) ioctl(i, TIOCNOTTY, (char *)NULL);\n", sp); 923 f_print(fout, "%s\t(void) close(i);\n", sp); 924 f_print(fout, "%s}\n", sp); 925 } 926 if (!logflag) 927 open_log_file(infile, sp); 928 f_print(fout, "#endif\n"); 929 if (logflag) 930 open_log_file(infile, sp); 931 } 932 933 static void 934 open_log_file(const char *infile, const char *sp) 935 { 936 char *s; 937 938 s = strrchr(infile, '.'); 939 if (s) 940 *s = '\0'; 941 f_print(fout, "%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, infile); 942 if (s) 943 *s = '.'; 944 } 945 946 947 948 949 /* 950 * write a registration for the given transport for Inetd 951 */ 952 void 953 write_inetd_register(const char *transp) 954 { 955 list *l; 956 definition *def; 957 version_list *vp; 958 const char *sp; 959 int isudp; 960 char tmpbuf[32]; 961 962 if (inetdflag) 963 sp = "\t"; 964 else 965 sp = ""; 966 if (streq(transp, "udp")) 967 isudp = 1; 968 else 969 isudp = 0; 970 f_print(fout, "\n"); 971 if (inetdflag) { 972 f_print(fout, 973 "\tif ((_rpcfdtype == 0) || (_rpcfdtype == %s)) {\n", 974 isudp ? "SOCK_DGRAM" : "SOCK_STREAM"); 975 } 976 f_print(fout, "%s\t%s = svc%s_create(%s", 977 sp, TRANSP, transp, inetdflag? "sock": "RPC_ANYSOCK"); 978 if (!isudp) 979 f_print(fout, ", 0, 0"); 980 f_print(fout, ");\n"); 981 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 982 (void) sprintf(_errbuf, "cannot create %s service.", transp); 983 (void) sprintf(tmpbuf, "%s\t\t", sp); 984 print_err_message(tmpbuf); 985 f_print(fout, "%s\t\texit(1);\n", sp); 986 f_print(fout, "%s\t}\n", sp); 987 988 if (inetdflag) { 989 f_print(fout, "%s\tif (!_rpcpmstart)\n\t", sp); 990 f_print(fout, "%s\tproto = IPPROTO_%s;\n", 991 sp, isudp ? "UDP": "TCP"); 992 } 993 for (l = defined; l != NULL; l = l->next) { 994 def = (definition *) l->val; 995 if (def->def_kind != DEF_PROGRAM) { 996 continue; 997 } 998 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 999 f_print(fout, "%s\tif (!svc_register(%s, %s, %s, ", 1000 sp, TRANSP, def->def_name, vp->vers_name); 1001 pvname(def->def_name, vp->vers_num); 1002 if (inetdflag) 1003 f_print(fout, ", proto)) {\n"); 1004 else 1005 f_print(fout, ", IPPROTO_%s)) {\n", 1006 isudp ? "UDP": "TCP"); 1007 (void) sprintf(_errbuf, 1008 "unable to register (%s, %s, %s).", 1009 def->def_name, vp->vers_name, transp); 1010 print_err_message(tmpbuf); 1011 f_print(fout, "%s\t\texit(1);\n", sp); 1012 f_print(fout, "%s\t}\n", sp); 1013 } 1014 } 1015 if (inetdflag) 1016 f_print(fout, "\t}\n"); 1017 } 1018