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 static 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, "pthread_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((char *)NULL); 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 definition 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 fputs(proc->args.argname, fout); 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 if (streq(proc->res_type, "void")) { 437 continue; 438 } 439 f_print(fout, "\t\t"); 440 ptype(proc->res_prefix, proc->res_type, 0); 441 pvname(proc->proc_name, vp->vers_num); 442 f_print(fout, "_res;\n"); 443 } 444 f_print(fout, "\t} %s;\n", RESULT); 445 f_print(fout, "\tbool_t %s;\n", RETVAL); 446 447 } else 448 f_print(fout, "\tchar *%s;\n", RESULT); 449 450 f_print(fout, "\txdrproc_t xdr_%s, xdr_%s;\n", ARG, RESULT); 451 if (mtflag) 452 f_print(fout, 453 "\tbool_t (*%s)(char *, void *, struct svc_req *);\n", 454 ROUTINE); 455 else 456 f_print(fout, 457 "\tchar *(*%s)(char *, struct svc_req *);\n", 458 ROUTINE); 459 f_print(fout, "\n"); 460 461 if (timerflag) { 462 if (mtflag) 463 f_print(fout, "\tpthread_mutex_lock(&_svcstate_lock);\n"); 464 465 f_print(fout, "\t_rpcsvcstate = _SERVING;\n"); 466 if (mtflag) 467 f_print(fout, "\tpthread_mutex_unlock(&_svcstate_lock);\n"); 468 } 469 470 f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP); 471 if (!nullproc(vp->procs)) { 472 f_print(fout, "\tcase NULLPROC:\n"); 473 f_print(fout, 474 "\t\t(void) svc_sendreply(%s,\n\t\t\t" 475 "(xdrproc_t) xdr_void, (char *)NULL);\n", 476 TRANSP); 477 print_return("\t\t"); 478 f_print(fout, "\n"); 479 } 480 for (proc = vp->procs; proc != NULL; proc = proc->next) { 481 f_print(fout, "\tcase %s:\n", proc->proc_name); 482 if (proc->arg_num < 2) { /* single argument */ 483 p_xdrfunc(ARG, proc->args.decls->decl.type); 484 } else { 485 p_xdrfunc(ARG, proc->args.argname); 486 } 487 p_xdrfunc(RESULT, proc->res_type); 488 489 if (mtflag) 490 f_print(fout, 491 "\t\t%s = (bool_t (*) (char *, void *, struct svc_req *))", 492 ROUTINE); 493 else 494 f_print(fout, 495 "\t\t%s = (char *(*)(char *, struct svc_req *)) ", 496 ROUTINE); 497 if (newstyle) { /* new style: calls internal routine */ 498 f_print(fout, "_"); 499 } 500 if (!newstyle) 501 pvname_svc(proc->proc_name, vp->vers_num); 502 else 503 pvname(proc->proc_name, vp->vers_num); 504 f_print(fout, ";\n"); 505 f_print(fout, "\t\tbreak;\n\n"); 506 } 507 f_print(fout, "\tdefault:\n"); 508 printerr("noproc", TRANSP); 509 print_return("\t\t"); 510 f_print(fout, "\t}\n"); 511 512 f_print(fout, 513 "\t(void) memset((char *)&%s, 0, sizeof (%s));\n", 514 ARG, ARG); 515 printif("getargs", TRANSP, "(caddr_t) &", ARG); 516 printerr("decode", TRANSP); 517 print_return("\t\t"); 518 f_print(fout, "\t}\n"); 519 520 if (!mtflag) 521 f_print(fout, "\t%s = (*%s)((char *)&%s, %s);\n", 522 RESULT, ROUTINE, ARG, RQSTP); 523 else 524 f_print(fout, "\t%s = (bool_t) (*%s)((char *)&%s, (void *)&%s, %s);\n", 525 RETVAL, ROUTINE, ARG, RESULT, RQSTP); 526 527 528 if (mtflag) 529 f_print(fout, 530 "\tif (%s > 0 && !svc_sendreply(%s, xdr_%s, (char *)&%s)) {\n", 531 RETVAL, TRANSP, RESULT, RESULT); 532 else 533 f_print(fout, 534 "\tif (%s != NULL && !svc_sendreply(%s, xdr_%s, %s)) {\n", 535 RESULT, TRANSP, RESULT, RESULT); 536 537 printerr("systemerr", TRANSP); 538 f_print(fout, "\t}\n"); 539 540 printif("freeargs", TRANSP, "(caddr_t) &", ARG); 541 (void) sprintf(_errbuf, "unable to free arguments"); 542 print_err_message("\t\t"); 543 f_print(fout, "\t\texit(1);\n"); 544 f_print(fout, "\t}\n"); 545 /* print out free routine */ 546 if (mtflag) { 547 f_print(fout,"\tif (!"); 548 pvname(def->def_name, vp->vers_num); 549 f_print(fout,"_freeresult(%s, xdr_%s, (caddr_t) &%s))\n", 550 TRANSP, RESULT, RESULT); 551 (void) sprintf(_errbuf, "unable to free results"); 552 print_err_message("\t\t"); 553 f_print(fout, "\n"); 554 } 555 print_return("\t"); 556 f_print(fout, "}\n"); 557 } 558 } 559 560 static void 561 printerr(const char *err, const char *transp) 562 { 563 f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp); 564 } 565 566 static void 567 printif(const char *proc, const char *transp, const char *prefix, 568 const char *arg) 569 { 570 f_print(fout, "\tif (!svc_%s(%s, xdr_%s, (char *)%s%s)) {\n", 571 proc, transp, arg, prefix, arg); 572 } 573 574 int 575 nullproc(proc_list *proc) 576 { 577 for (; proc != NULL; proc = proc->next) { 578 if (streq(proc->proc_num, "0")) { 579 return (1); 580 } 581 } 582 return (0); 583 } 584 585 static void 586 write_inetmost(const char *infile) 587 { 588 f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP); 589 f_print(fout, "\tint sock;\n"); 590 f_print(fout, "\tint proto;\n"); 591 f_print(fout, "\tstruct sockaddr_in saddr;\n"); 592 f_print(fout, "\tsocklen_t asize = sizeof (saddr);\n"); 593 f_print(fout, "\n"); 594 f_print(fout, 595 "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n"); 596 f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n\n"); 597 f_print(fout, "\t\tif (saddr.sin_family != AF_INET)\n"); 598 f_print(fout, "\t\t\texit(1);\n"); 599 f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n"); 600 f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n"); 601 f_print(fout, "\t\t\texit(1);\n"); 602 f_print(fout, "\t\tsock = 0;\n"); 603 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 604 f_print(fout, "\t\tproto = 0;\n"); 605 open_log_file(infile, "\t\t"); 606 f_print(fout, "\t} else {\n"); 607 write_rpc_svc_fg(infile, "\t\t"); 608 f_print(fout, "\t\tsock = RPC_ANYSOCK;\n"); 609 print_pmapunset("\t\t"); 610 f_print(fout, "\t}\n"); 611 } 612 613 static void 614 print_return(const char *space) 615 { 616 if (exitnow) 617 f_print(fout, "%sexit(0);\n", space); 618 else { 619 if (timerflag) { 620 if (mtflag) 621 f_print(fout, "%spthread_mutex_lock(&_svcstate_lock);\n", space); 622 f_print(fout, "%s_rpcsvcstate = _SERVED;\n", space); 623 if (mtflag) 624 f_print(fout, "%spthread_mutex_unlock(&_svcstate_lock);\n", space); 625 } 626 f_print(fout, "%sreturn;\n", space); 627 } 628 } 629 630 static void 631 print_pmapunset(const char *space) 632 { 633 list *l; 634 definition *def; 635 version_list *vp; 636 637 for (l = defined; l != NULL; l = l->next) { 638 def = (definition *) l->val; 639 if (def->def_kind == DEF_PROGRAM) { 640 for (vp = def->def.pr.versions; vp != NULL; 641 vp = vp->next) { 642 f_print(fout, "%s(void) pmap_unset(%s, %s);\n", 643 space, def->def_name, vp->vers_name); 644 } 645 } 646 } 647 } 648 649 static void 650 print_err_message(const char *space) 651 { 652 if (logflag) 653 f_print(fout, "%ssyslog(LOG_ERR, \"%s\");\n", space, _errbuf); 654 else if (inetdflag || pmflag) 655 f_print(fout, "%s_msgout(\"%s\");\n", space, _errbuf); 656 else 657 f_print(fout, "%sfprintf(stderr, \"%s\");\n", space, _errbuf); 658 } 659 660 /* 661 * Write the server auxiliary function (_msgout, timeout) 662 */ 663 void 664 write_svc_aux(int nomain) 665 { 666 if (!logflag) 667 write_msg_out(); 668 if (!nomain) 669 write_timeout_func(); 670 } 671 672 /* 673 * Write the _msgout function 674 */ 675 676 static void 677 write_msg_out(void) 678 { 679 f_print(fout, "\n"); 680 /* 681 * Avoid making _msgout() static -- it's useful to have it visible 682 * in the toplevel RPC server code. 683 */ 684 f_print(fout, "static\n"); 685 f_print(fout, "void _msgout(const char* msg)\n"); 686 f_print(fout, "{\n"); 687 f_print(fout, "#ifdef RPC_SVC_FG\n"); 688 if (inetdflag || pmflag) 689 f_print(fout, "\tif (_rpcpmstart)\n"); 690 f_print(fout, "\t\tsyslog(LOG_ERR, \"%%s\", msg);\n"); 691 f_print(fout, "\telse\n"); 692 f_print(fout, 693 "\t\t(void) fprintf(stderr, \"%%s\\n\", msg);\n"); 694 f_print(fout, "#else\n"); 695 f_print(fout, "\tsyslog(LOG_ERR, \"%%s\", msg);\n"); 696 f_print(fout, "#endif\n"); 697 f_print(fout, "}\n"); 698 } 699 700 /* 701 * Write the timeout function 702 */ 703 static void 704 write_timeout_func(void) 705 { 706 if (!timerflag) 707 return; 708 709 f_print(fout, "\n"); 710 f_print(fout, "static void\n"); 711 f_print(fout, "closedown(int sig)\n"); 712 f_print(fout, "{\n"); 713 if (mtflag) 714 f_print(fout, "\tpthread_mutex_lock(&_svcstate_lock);\n"); 715 f_print(fout, "\tif (_rpcsvcstate == _IDLE) {\n"); 716 f_print(fout, "\t\textern fd_set svc_fdset;\n"); 717 f_print(fout, "\t\tstatic int size;\n"); 718 f_print(fout, "\t\tint i, openfd;\n"); 719 if (tirpcflag && pmflag) { 720 f_print(fout, "\t\tstruct t_info tinfo;\n\n"); 721 f_print(fout, 722 "\t\tif (!t_getinfo(0, &tinfo) && (tinfo.servtype == T_CLTS))\n"); 723 } else { 724 f_print(fout, "\n\t\tif (_rpcfdtype == SOCK_DGRAM)\n"); 725 } 726 f_print(fout, "\t\t\texit(0);\n"); 727 f_print(fout, "\t\tif (size == 0) {\n"); 728 if (tirpcflag) { 729 f_print(fout, "\t\t\tstruct rlimit rl;\n\n"); 730 f_print(fout, "\t\t\trl.rlim_max = 0;\n"); 731 f_print(fout, "\t\t\tif (getrlimit(RLIMIT_NOFILE, &rl) == -1)\n"); 732 f_print(fout, "\t\t\t\treturn;\n"); 733 f_print(fout, "\t\t\tif ((size = rl.rlim_max) == 0) {\n"); 734 735 if (mtflag) 736 f_print(fout, "\t\t\t\tpthread_mutex_unlock(&_svcstate_lock);\n"); 737 738 f_print(fout, "\t\t\t\treturn;\n\t\t\t}\n"); 739 } else { 740 f_print(fout, "\t\t\tsize = getdtablesize();\n"); 741 } 742 f_print(fout, "\t\t}\n"); 743 f_print(fout, 744 "\t\tfor (i = 0, openfd = 0; i < size && openfd < 2; i++)\n"); 745 f_print(fout, "\t\t\tif (FD_ISSET(i, &svc_fdset))\n"); 746 f_print(fout, "\t\t\t\topenfd++;\n"); 747 f_print(fout, "\t\tif (openfd <= 1)\n"); 748 f_print(fout, "\t\t\texit(0);\n"); 749 f_print(fout, "\t}\n"); 750 f_print(fout, "\tif (_rpcsvcstate == _SERVED)\n"); 751 f_print(fout, "\t\t_rpcsvcstate = _IDLE;\n\n"); 752 if (mtflag) 753 f_print(fout, "\tpthread_mutex_unlock(&_svcstate_lock);\n"); 754 755 f_print(fout, "\t(void) signal(SIGALRM, closedown);\n"); 756 f_print(fout, "\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n"); 757 f_print(fout, "}\n"); 758 759 } 760 761 /* 762 * Write the most of port monitor support 763 */ 764 static void 765 write_pm_most(const char *infile, int netflag) 766 { 767 list *l; 768 definition *def; 769 version_list *vp; 770 771 if (tirpc_socket) { 772 f_print(fout, 773 "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n"); 774 f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n"); 775 } else { 776 f_print(fout, "\tif (!ioctl(0, I_LOOK, mname) &&\n"); 777 f_print(fout, "\t\t(!strcmp(mname, \"sockmod\") ||"); 778 f_print(fout, " !strcmp(mname, \"timod\"))) {\n"); 779 } 780 f_print(fout, "\t\tchar *netid;\n"); 781 if (!netflag) { /* Not included by -n option */ 782 f_print(fout, "\t\tstruct netconfig *nconf = NULL;\n"); 783 f_print(fout, "\t\tSVCXPRT *%s;\n", TRANSP); 784 } 785 if (timerflag) 786 f_print(fout, "\t\tint pmclose;\n"); 787 /* 788 * Not necessary, defined in /usr/include/stdlib 789 * f_print(fout, "\t\textern char *getenv();\n"); 790 */ 791 f_print(fout, "\n"); 792 if (tirpc_socket) { 793 f_print(fout, "\t\tif (saddr.ss_family != AF_INET &&\n"); 794 f_print(fout, "\t\t saddr.ss_family != AF_INET6)\n"); 795 f_print(fout, "\t\t\texit(1);\n"); 796 f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n"); 797 f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n"); 798 f_print(fout, "\t\t\texit(1);\n"); 799 } 800 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 801 open_log_file(infile, "\t\t"); 802 f_print(fout, "\n\t\tif ((netid = \ 803 getenv(\"NLSPROVIDER\")) == NULL) {\n"); 804 805 if (timerflag) { 806 f_print(fout, "\t\t/* started from inetd */\n"); 807 f_print(fout, "\t\t\tpmclose = 1;\n"); 808 } 809 f_print(fout, 810 "\t\t} else {\n"); 811 f_print(fout, "\t\t\tif ((nconf = getnetconfigent(netid)) == NULL)\n"); 812 sprintf(_errbuf, "cannot get transport info"); 813 print_err_message("\t\t\t\t"); 814 if (timerflag) { 815 if (tirpc_socket) 816 f_print(fout, "\n\t\t\tpmclose = 1;\t/* XXX */\n"); 817 else 818 f_print(fout, 819 "\n\t\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n"); 820 } 821 f_print(fout, "\t\t}\n"); 822 /* 823 * A kludgy support for inetd services. Inetd only works with 824 * sockmod, and RPC works only with timod, hence all this jugglery 825 */ 826 if (!tirpc_socket) { 827 f_print(fout, "\t\tif (strcmp(mname, \"sockmod\") == 0) {\n"); 828 f_print(fout, "\t\t\tif (ioctl(0, I_POP, 0) || "); 829 f_print(fout, "ioctl(0, I_PUSH, \"timod\")) {\n"); 830 sprintf(_errbuf, "could not get the right module"); 831 print_err_message("\t\t\t\t"); 832 f_print(fout, "\t\t\t\texit(1);\n"); 833 f_print(fout, "\t\t\t}\n"); 834 f_print(fout, "\t\t}\n"); 835 } 836 if (tirpcflag) { 837 f_print(fout, 838 "\t\tif ((%s = svc_tli_create(0, nconf, NULL, \ 839 RPC_MAXDATASIZE, RPC_MAXDATASIZE)) \ 840 == NULL) {\n", 841 TRANSP); 842 } else { 843 f_print(fout, 844 "\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) \ 845 == NULL) {\n", 846 TRANSP); 847 } 848 sprintf(_errbuf, "cannot create server handle"); 849 print_err_message("\t\t\t"); 850 f_print(fout, "\t\t\texit(1);\n"); 851 f_print(fout, "\t\t}\n"); 852 f_print(fout, "\t\tif (nconf)\n"); 853 f_print(fout, "\t\t\tfreenetconfigent(nconf);\n"); 854 for (l = defined; l != NULL; l = l->next) { 855 def = (definition *) l->val; 856 if (def->def_kind != DEF_PROGRAM) { 857 continue; 858 } 859 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 860 f_print(fout, 861 "\t\tif (!svc_reg(%s, %s, %s, ", 862 TRANSP, def->def_name, vp->vers_name); 863 pvname(def->def_name, vp->vers_num); 864 f_print(fout, ", 0)) {\n"); 865 (void) sprintf(_errbuf, "unable to register (%s, %s).", 866 def->def_name, vp->vers_name); 867 print_err_message("\t\t\t"); 868 f_print(fout, "\t\t\texit(1);\n"); 869 f_print(fout, "\t\t}\n"); 870 } 871 } 872 if (timerflag) { 873 f_print(fout, "\t\tif (pmclose) {\n"); 874 f_print(fout, "\t\t\t(void) signal(SIGALRM, closedown);\n"); 875 f_print(fout, "\t\t\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n"); 876 f_print(fout, "\t\t}\n"); 877 } 878 f_print(fout, "\t\tsvc_run();\n"); 879 f_print(fout, "\t\texit(1);\n"); 880 f_print(fout, "\t\t/* NOTREACHED */\n"); 881 f_print(fout, "\t}"); 882 } 883 884 /* 885 * Support for backgrounding the server if self started. 886 */ 887 static void 888 write_rpc_svc_fg(const char *infile, const char *sp) 889 { 890 f_print(fout, "#ifndef RPC_SVC_FG\n"); 891 f_print(fout, "%sint size;\n", sp); 892 if (tirpcflag) 893 f_print(fout, "%sstruct rlimit rl;\n", sp); 894 if (inetdflag) 895 f_print(fout, "%sint pid, i;\n\n", sp); 896 f_print(fout, "%spid = fork();\n", sp); 897 f_print(fout, "%sif (pid < 0) {\n", sp); 898 f_print(fout, "%s\tperror(\"cannot fork\");\n", sp); 899 f_print(fout, "%s\texit(1);\n", sp); 900 f_print(fout, "%s}\n", sp); 901 f_print(fout, "%sif (pid)\n", sp); 902 f_print(fout, "%s\texit(0);\n", sp); 903 /* get number of file descriptors */ 904 if (tirpcflag) { 905 f_print(fout, "%srl.rlim_max = 0;\n", sp); 906 f_print(fout, "%sif (getrlimit(RLIMIT_NOFILE, &rl) == -1) {\n", 907 sp); 908 f_print(fout, "%s\tperror(\"getrlimit\");\n", sp); 909 f_print(fout, "%s\texit(1);\n", sp); 910 f_print(fout, "%s}\n", sp); 911 f_print(fout, "%sif ((size = rl.rlim_max) == 0)\n", sp); 912 f_print(fout, "%s\texit(1);\n", sp); 913 } else { 914 f_print(fout, "%ssize = getdtablesize();\n", sp); 915 } 916 917 f_print(fout, "%sfor (i = 0; i < size; i++)\n", sp); 918 f_print(fout, "%s\t(void) close(i);\n", sp); 919 /* Redirect stderr and stdout to console */ 920 f_print(fout, "%si = open(\"/dev/console\", 2);\n", sp); 921 f_print(fout, "%s(void) dup2(i, 1);\n", sp); 922 f_print(fout, "%s(void) dup2(i, 2);\n", sp); 923 /* This removes control of the controlling terminal */ 924 if (tirpcflag) 925 f_print(fout, "%ssetsid();\n", sp); 926 else { 927 f_print(fout, "%si = open(\"/dev/tty\", 2);\n", sp); 928 f_print(fout, "%sif (i >= 0) {\n", sp); 929 f_print(fout, 930 "%s\t(void) ioctl(i, TIOCNOTTY, (char *)NULL);\n", sp); 931 f_print(fout, "%s\t(void) close(i);\n", sp); 932 f_print(fout, "%s}\n", sp); 933 } 934 if (!logflag) 935 open_log_file(infile, sp); 936 f_print(fout, "#endif\n"); 937 if (logflag) 938 open_log_file(infile, sp); 939 } 940 941 static void 942 open_log_file(const char *infile, const char *sp) 943 { 944 char *s; 945 946 s = strrchr(infile, '.'); 947 if (s) 948 *s = '\0'; 949 f_print(fout, "%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, infile); 950 if (s) 951 *s = '.'; 952 } 953 954 955 956 957 /* 958 * write a registration for the given transport for Inetd 959 */ 960 void 961 write_inetd_register(const char *transp) 962 { 963 list *l; 964 definition *def; 965 version_list *vp; 966 const char *sp; 967 int isudp; 968 char tmpbuf[32]; 969 970 if (inetdflag) 971 sp = "\t"; 972 else 973 sp = ""; 974 if (streq(transp, "udp")) 975 isudp = 1; 976 else 977 isudp = 0; 978 f_print(fout, "\n"); 979 if (inetdflag) { 980 f_print(fout, 981 "\tif ((_rpcfdtype == 0) || (_rpcfdtype == %s)) {\n", 982 isudp ? "SOCK_DGRAM" : "SOCK_STREAM"); 983 } 984 f_print(fout, "%s\t%s = svc%s_create(%s", 985 sp, TRANSP, transp, inetdflag? "sock": "RPC_ANYSOCK"); 986 if (!isudp) 987 f_print(fout, ", 0, 0"); 988 f_print(fout, ");\n"); 989 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 990 (void) sprintf(_errbuf, "cannot create %s service.", transp); 991 (void) sprintf(tmpbuf, "%s\t\t", sp); 992 print_err_message(tmpbuf); 993 f_print(fout, "%s\t\texit(1);\n", sp); 994 f_print(fout, "%s\t}\n", sp); 995 996 if (inetdflag) { 997 f_print(fout, "%s\tif (!_rpcpmstart)\n\t", sp); 998 f_print(fout, "%s\tproto = IPPROTO_%s;\n", 999 sp, isudp ? "UDP": "TCP"); 1000 } 1001 for (l = defined; l != NULL; l = l->next) { 1002 def = (definition *) l->val; 1003 if (def->def_kind != DEF_PROGRAM) { 1004 continue; 1005 } 1006 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 1007 f_print(fout, "%s\tif (!svc_register(%s, %s, %s, ", 1008 sp, TRANSP, def->def_name, vp->vers_name); 1009 pvname(def->def_name, vp->vers_num); 1010 if (inetdflag) 1011 f_print(fout, ", proto)) {\n"); 1012 else 1013 f_print(fout, ", IPPROTO_%s)) {\n", 1014 isudp ? "UDP": "TCP"); 1015 (void) sprintf(_errbuf, 1016 "unable to register (%s, %s, %s).", 1017 def->def_name, vp->vers_name, transp); 1018 print_err_message(tmpbuf); 1019 f_print(fout, "%s\t\texit(1);\n", sp); 1020 f_print(fout, "%s\t}\n", sp); 1021 } 1022 } 1023 if (inetdflag) 1024 f_print(fout, "\t}\n"); 1025 } 1026