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 /* 39 * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler 40 * Copyright (C) 1987, Sun Microsystems, Inc. 41 */ 42 #include <stdio.h> 43 #include <string.h> 44 #include "rpc_parse.h" 45 #include "rpc_scan.h" 46 #include "rpc_util.h" 47 48 static char RQSTP[] = "rqstp"; 49 static char TRANSP[] = "transp"; 50 static char ARG[] = "argument"; 51 static char RESULT[] = "result"; 52 static char ROUTINE[] = "local"; 53 static char RETVAL[] = "retval"; 54 55 static char _errbuf[256]; /* For all messages */ 56 57 void internal_proctype( proc_list * ); 58 static void write_real_program( definition * ); 59 static void write_program(definition *, const char *); 60 static void printerr(const char *, const char *); 61 static void printif(const char *, const char *, const char *, const char *); 62 static void write_inetmost(const char *); 63 static void print_return(const char *); 64 static void print_pmapunset(const char *); 65 static void print_err_message(const char *); 66 static void write_timeout_func( void ); 67 static void write_pm_most(const char *, int); 68 static void write_rpc_svc_fg(const char *, const char *); 69 static void open_log_file(const char *, const char *); 70 static void write_msg_out( void ); 71 72 73 static void 74 p_xdrfunc(const char *rname, const char *typename) 75 { 76 f_print(fout, "\t\txdr_%s = (xdrproc_t) xdr_%s;\n", 77 rname, stringfix(typename)); 78 } 79 80 void 81 internal_proctype(proc_list *plist) 82 { 83 f_print(fout, "static "); 84 ptype(plist->res_prefix, plist->res_type, 1); 85 f_print(fout, "*"); 86 } 87 88 89 /* 90 * write most of the service, that is, everything but the registrations. 91 */ 92 void 93 write_most(const char *infile, int netflag, int nomain) 94 { 95 if (inetdflag || pmflag) { 96 const char *var_type; 97 var_type = (nomain? "extern" : "static"); 98 f_print(fout, "%s int _rpcpmstart;", var_type); 99 f_print(fout, "\t\t/* Started by a port monitor ? */\n"); 100 if (!tirpcflag || tirpc_socket) { 101 f_print(fout, "%s int _rpcfdtype;", var_type); 102 f_print(fout, "\n\t\t /* Whether Stream or \ 103 Datagram ? */\n"); 104 } 105 106 if (timerflag) { 107 f_print(fout, " /* States a server can be in \ 108 wrt request */\n\n"); 109 f_print(fout, "#define\t_IDLE 0\n"); 110 f_print(fout, "#define\t_SERVED 1\n"); 111 f_print(fout, "#define\t_SERVING 2\n\n"); 112 f_print(fout, "static int _rpcsvcstate = _IDLE;"); 113 f_print(fout, "\t /* Set when a request is \ 114 serviced */\n"); 115 116 if (mtflag) { 117 f_print(fout, "pthread_mutex_t _svcstate_lock;"); 118 f_print(fout, "\t\t\t/* Mutex lock for variable _rpcsvcstate */\n"); 119 120 } 121 122 } 123 124 write_svc_aux(nomain); 125 } 126 /* write out dispatcher and stubs */ 127 write_programs((char *)NULL); 128 129 if (nomain) 130 return; 131 132 f_print(fout, "\nint\n"); 133 f_print(fout, "main()\n"); 134 f_print(fout, "{\n"); 135 if (inetdflag) { 136 write_inetmost(infile); 137 /* Includes call to write_rpc_svc_fg() */ 138 } else { 139 if (tirpcflag) { 140 if (netflag) { 141 f_print(fout, 142 "\tregister SVCXPRT *%s;\n", TRANSP); 143 f_print(fout, 144 "\tstruct netconfig *nconf = NULL;\n"); 145 } 146 f_print(fout, "\tpid_t pid;\n"); 147 f_print(fout, "\tint i;\n"); 148 if (pmflag) { 149 if (tirpc_socket) { 150 f_print(fout, "\tstruct sockaddr_storage saddr;\n"); 151 f_print(fout, "\tsocklen_t asize = sizeof (saddr);\n\n"); 152 } else 153 f_print(fout, "\tchar mname[FMNAMESZ + 1];\n\n"); 154 } 155 156 if (mtflag & timerflag) 157 f_print(fout, "\tmutex_init(&_svcstate_lock, USYNC_THREAD, NULL);\n"); 158 if (pmflag) { 159 write_pm_most(infile, netflag); 160 f_print(fout, "\telse {\n"); 161 write_rpc_svc_fg(infile, "\t\t"); 162 f_print(fout, "\t}\n"); 163 } else 164 write_rpc_svc_fg(infile, "\t\t"); 165 166 } else { 167 f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP); 168 f_print(fout, "\n"); 169 print_pmapunset("\t"); 170 } 171 } 172 173 if (logflag && !inetdflag) { 174 open_log_file(infile, "\t"); 175 } 176 } 177 178 /* 179 * write a registration for the given transport 180 */ 181 void 182 write_netid_register(const char *transp) 183 { 184 list *l; 185 definition *def; 186 version_list *vp; 187 const char *sp; 188 char tmpbuf[32]; 189 190 sp = ""; 191 f_print(fout, "\n"); 192 f_print(fout, "%s\tnconf = getnetconfigent(\"%s\");\n", sp, transp); 193 f_print(fout, "%s\tif (nconf == NULL) {\n", sp); 194 (void) sprintf(_errbuf, "cannot find %s netid.", transp); 195 sprintf(tmpbuf, "%s\t\t", sp); 196 print_err_message(tmpbuf); 197 f_print(fout, "%s\t\texit(1);\n", sp); 198 f_print(fout, "%s\t}\n", sp); 199 if (tirpcflag) { 200 f_print(fout, "%s\t%s = svc_tli_create(RPC_ANYFD, ", 201 sp, TRANSP); 202 f_print(fout,"nconf, 0, RPC_MAXDATASIZE, RPC_MAXDATASIZE);\n"); 203 } else { 204 f_print(fout, 205 "%s\t%s = svc_tli_create(RPC_ANYFD, nconf, 0, 0, 0);\n", 206 sp, TRANSP); 207 } 208 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 209 (void) sprintf(_errbuf, "cannot create %s service.", transp); 210 print_err_message(tmpbuf); 211 f_print(fout, "%s\t\texit(1);\n", sp); 212 f_print(fout, "%s\t}\n", sp); 213 214 for (l = defined; l != NULL; l = l->next) { 215 def = (definition *) l->val; 216 if (def->def_kind != DEF_PROGRAM) { 217 continue; 218 } 219 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 220 f_print(fout, 221 "%s\t(void) rpcb_unset(%s, %s, nconf);\n", 222 sp, def->def_name, vp->vers_name); 223 f_print(fout, 224 "%s\tif (!svc_reg(%s, %s, %s, ", 225 sp, TRANSP, def->def_name, vp->vers_name); 226 pvname(def->def_name, vp->vers_num); 227 f_print(fout, ", nconf)) {\n"); 228 (void) sprintf(_errbuf, 229 "unable to register (%s, %s, %s).", 230 def->def_name, vp->vers_name, transp); 231 print_err_message(tmpbuf); 232 f_print(fout, "%s\t\texit(1);\n", sp); 233 f_print(fout, "%s\t}\n", sp); 234 } 235 } 236 f_print(fout, "%s\tfreenetconfigent(nconf);\n", sp); 237 } 238 239 /* 240 * write a registration for the given transport for TLI 241 */ 242 void 243 write_nettype_register(const char *transp) 244 { 245 list *l; 246 definition *def; 247 version_list *vp; 248 249 for (l = defined; l != NULL; l = l->next) { 250 def = (definition *) l->val; 251 if (def->def_kind != DEF_PROGRAM) { 252 continue; 253 } 254 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 255 f_print(fout, "\tif (!svc_create("); 256 pvname(def->def_name, vp->vers_num); 257 f_print(fout, ", %s, %s, \"%s\")) {\n", 258 def->def_name, vp->vers_name, transp); 259 (void) sprintf(_errbuf, 260 "unable to create (%s, %s) for %s.", 261 def->def_name, vp->vers_name, transp); 262 print_err_message("\t\t"); 263 f_print(fout, "\t\texit(1);\n"); 264 f_print(fout, "\t}\n"); 265 } 266 } 267 } 268 269 /* 270 * write the rest of the service 271 */ 272 void 273 write_rest(void) 274 { 275 f_print(fout, "\n"); 276 if (inetdflag) { 277 f_print(fout, "\tif (%s == (SVCXPRT *)NULL) {\n", TRANSP); 278 (void) sprintf(_errbuf, "could not create a handle"); 279 print_err_message("\t\t"); 280 f_print(fout, "\t\texit(1);\n"); 281 f_print(fout, "\t}\n"); 282 if (timerflag) { 283 f_print(fout, "\tif (_rpcpmstart) {\n"); 284 f_print(fout, 285 "\t\t(void) signal(SIGALRM, closedown);\n"); 286 f_print(fout, "\t\t(void) \ 287 alarm(_RPCSVC_CLOSEDOWN/2);\n"); 288 f_print(fout, "\t}\n"); 289 } 290 } 291 f_print(fout, "\tsvc_run();\n"); 292 (void) sprintf(_errbuf, "svc_run returned"); 293 print_err_message("\t"); 294 f_print(fout, "\texit(1);\n"); 295 f_print(fout, "\t/* NOTREACHED */\n"); 296 f_print(fout, "}\n"); 297 } 298 299 void 300 write_programs(const char *storage) 301 { 302 list *l; 303 definition *def; 304 305 /* write out stubs for procedure definitions */ 306 for (l = defined; l != NULL; l = l->next) { 307 def = (definition *) l->val; 308 if (def->def_kind == DEF_PROGRAM) { 309 write_real_program(def); 310 } 311 } 312 313 /* write out dispatcher for each program */ 314 for (l = defined; l != NULL; l = l->next) { 315 def = (definition *) l->val; 316 if (def->def_kind == DEF_PROGRAM) { 317 write_program(def, storage); 318 } 319 } 320 321 322 } 323 324 /* 325 * write out definition of internal function (e.g. _printmsg_1(...)) 326 * which calls server's definition of actual function (e.g. printmsg_1(...)). 327 * Unpacks single user argument of printmsg_1 to call-by-value format 328 * expected by printmsg_1. 329 */ 330 static void 331 write_real_program(definition *def) 332 { 333 version_list *vp; 334 proc_list *proc; 335 decl_list *l; 336 337 if (!newstyle) return; /* not needed for old style */ 338 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 339 for (proc = vp->procs; proc != NULL; proc = proc->next) { 340 f_print(fout, "\n"); 341 if (!mtflag) 342 internal_proctype(proc); 343 else 344 f_print(fout, "int"); 345 f_print(fout, "\n_"); 346 pvname(proc->proc_name, vp->vers_num); 347 f_print(fout, "("); 348 /* arg name */ 349 if (proc->arg_num > 1) 350 fputs(proc->args.argname, fout); 351 else 352 ptype(proc->args.decls->decl.prefix, 353 proc->args.decls->decl.type, 0); 354 if (mtflag) { 355 f_print(fout, " *argp, void *%s, struct svc_req *%s)\n", 356 RESULT, RQSTP); 357 358 359 } 360 else 361 f_print(fout, " *argp, struct svc_req *%s)\n", 362 RQSTP); 363 364 f_print(fout, "{\n"); 365 f_print(fout, "\treturn ("); 366 pvname_svc(proc->proc_name, vp->vers_num); 367 f_print(fout, "("); 368 if (proc->arg_num < 2) { /* single argument */ 369 if (!streq(proc->args.decls->decl.type, "void")) 370 f_print(fout, "*argp, "); /* non-void */ 371 } else { 372 for (l = proc->args.decls; l != NULL; 373 l = l->next) 374 f_print(fout, "argp->%s, ", 375 l->decl.name); 376 } 377 if (mtflag) 378 f_print(fout, "%s, ",RESULT); 379 f_print(fout, "%s));\n}\n", RQSTP); 380 } 381 } 382 } 383 384 static void 385 write_program(definition *def, const char *storage) 386 { 387 version_list *vp; 388 proc_list *proc; 389 int filled; 390 391 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 392 f_print(fout, "\n"); 393 if (storage != NULL) { 394 f_print(fout, "%s ", storage); 395 } 396 f_print(fout, "void\n"); 397 pvname(def->def_name, vp->vers_num); 398 399 f_print(fout, "(struct svc_req *%s, ", RQSTP); 400 f_print(fout, "SVCXPRT *%s)\n", TRANSP); 401 f_print(fout, "{\n"); 402 403 filled = 0; 404 f_print(fout, "\tunion {\n"); 405 for (proc = vp->procs; proc != NULL; proc = proc->next) { 406 if (proc->arg_num < 2) { /* single argument */ 407 if (streq(proc->args.decls->decl.type, 408 "void")) { 409 continue; 410 } 411 filled = 1; 412 f_print(fout, "\t\t"); 413 ptype(proc->args.decls->decl.prefix, 414 proc->args.decls->decl.type, 0); 415 pvname(proc->proc_name, vp->vers_num); 416 f_print(fout, "_arg;\n"); 417 418 } else { 419 filled = 1; 420 f_print(fout, "\t\t%s", proc->args.argname); 421 f_print(fout, " "); 422 pvname(proc->proc_name, vp->vers_num); 423 f_print(fout, "_arg;\n"); 424 } 425 } 426 if (!filled) { 427 f_print(fout, "\t\tint fill;\n"); 428 } 429 f_print(fout, "\t} %s;\n", ARG); 430 431 if (mtflag) { 432 f_print(fout, "\tunion {\n"); 433 for (proc = vp->procs; proc != NULL; proc = proc->next) { 434 if (streq(proc->res_type, "void")) { 435 continue; 436 } 437 f_print(fout, "\t\t"); 438 ptype(proc->res_prefix, proc->res_type, 0); 439 pvname(proc->proc_name, vp->vers_num); 440 f_print(fout, "_res;\n"); 441 } 442 f_print(fout, "\t} %s;\n", RESULT); 443 f_print(fout, "\tbool_t %s;\n", RETVAL); 444 445 } else 446 f_print(fout, "\tchar *%s;\n", RESULT); 447 448 f_print(fout, "\txdrproc_t xdr_%s, xdr_%s;\n", ARG, RESULT); 449 if (mtflag) 450 f_print(fout, 451 "\tbool_t (*%s)(char *, void *, struct svc_req *);\n", 452 ROUTINE); 453 else 454 f_print(fout, 455 "\tchar *(*%s)(char *, struct svc_req *);\n", 456 ROUTINE); 457 f_print(fout, "\n"); 458 459 if (timerflag) { 460 if (mtflag) 461 f_print(fout, "\tpthread_mutex_lock(&_svcstate_lock);\n"); 462 463 f_print(fout, "\t_rpcsvcstate = _SERVING;\n"); 464 if (mtflag) 465 f_print(fout, "\tpthread_mutex_unlock(&_svcstate_lock);\n"); 466 } 467 468 f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP); 469 if (!nullproc(vp->procs)) { 470 f_print(fout, "\tcase NULLPROC:\n"); 471 f_print(fout, 472 "\t\t(void) svc_sendreply(%s,\n\t\t\t" 473 "(xdrproc_t) xdr_void, (char *)NULL);\n", 474 TRANSP); 475 print_return("\t\t"); 476 f_print(fout, "\n"); 477 } 478 for (proc = vp->procs; proc != NULL; proc = proc->next) { 479 f_print(fout, "\tcase %s:\n", proc->proc_name); 480 if (proc->arg_num < 2) { /* single argument */ 481 p_xdrfunc(ARG, proc->args.decls->decl.type); 482 } else { 483 p_xdrfunc(ARG, proc->args.argname); 484 } 485 p_xdrfunc(RESULT, proc->res_type); 486 487 if (mtflag) 488 f_print(fout, 489 "\t\t%s = (bool_t (*) (char *, void *, struct svc_req *))", 490 ROUTINE); 491 else 492 f_print(fout, 493 "\t\t%s = (char *(*)(char *, struct svc_req *)) ", 494 ROUTINE); 495 if (newstyle) { /* new style: calls internal routine */ 496 f_print(fout, "_"); 497 } 498 if (!newstyle) 499 pvname_svc(proc->proc_name, vp->vers_num); 500 else 501 pvname(proc->proc_name, vp->vers_num); 502 f_print(fout, ";\n"); 503 f_print(fout, "\t\tbreak;\n\n"); 504 } 505 f_print(fout, "\tdefault:\n"); 506 printerr("noproc", TRANSP); 507 print_return("\t\t"); 508 f_print(fout, "\t}\n"); 509 510 f_print(fout, 511 "\t(void) memset((char *)&%s, 0, sizeof (%s));\n", 512 ARG, ARG); 513 printif("getargs", TRANSP, "(caddr_t) &", ARG); 514 printerr("decode", TRANSP); 515 print_return("\t\t"); 516 f_print(fout, "\t}\n"); 517 518 if (!mtflag) 519 f_print(fout, "\t%s = (*%s)((char *)&%s, %s);\n", 520 RESULT, ROUTINE, ARG, RQSTP); 521 else 522 f_print(fout, "\t%s = (bool_t) (*%s)((char *)&%s, (void *)&%s, %s);\n", 523 RETVAL, ROUTINE, ARG, RESULT, RQSTP); 524 525 526 if (mtflag) 527 f_print(fout, 528 "\tif (%s > 0 && !svc_sendreply(%s, xdr_%s, (char *)&%s)) {\n", 529 RETVAL, TRANSP, RESULT, RESULT); 530 else 531 f_print(fout, 532 "\tif (%s != NULL && !svc_sendreply(%s, xdr_%s, %s)) {\n", 533 RESULT, TRANSP, RESULT, RESULT); 534 535 printerr("systemerr", TRANSP); 536 f_print(fout, "\t}\n"); 537 538 printif("freeargs", TRANSP, "(caddr_t) &", ARG); 539 (void) sprintf(_errbuf, "unable to free arguments"); 540 print_err_message("\t\t"); 541 f_print(fout, "\t\texit(1);\n"); 542 f_print(fout, "\t}\n"); 543 /* print out free routine */ 544 if (mtflag) { 545 f_print(fout,"\tif (!"); 546 pvname(def->def_name, vp->vers_num); 547 f_print(fout,"_freeresult(%s, xdr_%s, (caddr_t) &%s))\n", 548 TRANSP, RESULT, RESULT); 549 (void) sprintf(_errbuf, "unable to free results"); 550 print_err_message("\t\t"); 551 f_print(fout, "\n"); 552 } 553 print_return("\t"); 554 f_print(fout, "}\n"); 555 } 556 } 557 558 static void 559 printerr(const char *err, const char *transp) 560 { 561 f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp); 562 } 563 564 static void 565 printif(const char *proc, const char *transp, const char *prefix, 566 const char *arg) 567 { 568 f_print(fout, "\tif (!svc_%s(%s, xdr_%s, (char *)%s%s)) {\n", 569 proc, transp, arg, prefix, arg); 570 } 571 572 int 573 nullproc(proc_list *proc) 574 { 575 for (; proc != NULL; proc = proc->next) { 576 if (streq(proc->proc_num, "0")) { 577 return (1); 578 } 579 } 580 return (0); 581 } 582 583 static void 584 write_inetmost(const char *infile) 585 { 586 f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP); 587 f_print(fout, "\tint sock;\n"); 588 f_print(fout, "\tint proto;\n"); 589 f_print(fout, "\tstruct sockaddr_in saddr;\n"); 590 f_print(fout, "\tsocklen_t asize = sizeof (saddr);\n"); 591 f_print(fout, "\n"); 592 f_print(fout, 593 "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n"); 594 f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n\n"); 595 f_print(fout, "\t\tif (saddr.sin_family != AF_INET)\n"); 596 f_print(fout, "\t\t\texit(1);\n"); 597 f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n"); 598 f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n"); 599 f_print(fout, "\t\t\texit(1);\n"); 600 f_print(fout, "\t\tsock = 0;\n"); 601 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 602 f_print(fout, "\t\tproto = 0;\n"); 603 open_log_file(infile, "\t\t"); 604 f_print(fout, "\t} else {\n"); 605 write_rpc_svc_fg(infile, "\t\t"); 606 f_print(fout, "\t\tsock = RPC_ANYSOCK;\n"); 607 print_pmapunset("\t\t"); 608 f_print(fout, "\t}\n"); 609 } 610 611 static void 612 print_return(const char *space) 613 { 614 if (exitnow) 615 f_print(fout, "%sexit(0);\n", space); 616 else { 617 if (timerflag) { 618 if (mtflag) 619 f_print(fout, "%spthread_mutex_lock(&_svcstate_lock);\n", space); 620 f_print(fout, "%s_rpcsvcstate = _SERVED;\n", space); 621 if (mtflag) 622 f_print(fout, "%spthread_mutex_unlock(&_svcstate_lock);\n", space); 623 } 624 f_print(fout, "%sreturn;\n", space); 625 } 626 } 627 628 static void 629 print_pmapunset(const char *space) 630 { 631 list *l; 632 definition *def; 633 version_list *vp; 634 635 for (l = defined; l != NULL; l = l->next) { 636 def = (definition *) l->val; 637 if (def->def_kind == DEF_PROGRAM) { 638 for (vp = def->def.pr.versions; vp != NULL; 639 vp = vp->next) { 640 f_print(fout, "%s(void) pmap_unset(%s, %s);\n", 641 space, def->def_name, vp->vers_name); 642 } 643 } 644 } 645 } 646 647 static void 648 print_err_message(const char *space) 649 { 650 if (logflag) 651 f_print(fout, "%ssyslog(LOG_ERR, \"%s\");\n", space, _errbuf); 652 else if (inetdflag || pmflag) 653 f_print(fout, "%s_msgout(\"%s\");\n", space, _errbuf); 654 else 655 f_print(fout, "%sfprintf(stderr, \"%s\");\n", space, _errbuf); 656 } 657 658 /* 659 * Write the server auxiliary function (_msgout, timeout) 660 */ 661 void 662 write_svc_aux(int nomain) 663 { 664 if (!logflag) 665 write_msg_out(); 666 if (!nomain) 667 write_timeout_func(); 668 } 669 670 /* 671 * Write the _msgout function 672 */ 673 674 static void 675 write_msg_out(void) 676 { 677 f_print(fout, "\n"); 678 /* 679 * Avoid making _msgout() static -- it's useful to have it visible 680 * in the toplevel RPC server code. 681 */ 682 f_print(fout, "static\n"); 683 f_print(fout, "void _msgout(const char* msg)\n"); 684 f_print(fout, "{\n"); 685 f_print(fout, "#ifdef RPC_SVC_FG\n"); 686 if (inetdflag || pmflag) 687 f_print(fout, "\tif (_rpcpmstart)\n"); 688 f_print(fout, "\t\tsyslog(LOG_ERR, \"%%s\", msg);\n"); 689 f_print(fout, "\telse\n"); 690 f_print(fout, 691 "\t\t(void) fprintf(stderr, \"%%s\\n\", msg);\n"); 692 f_print(fout, "#else\n"); 693 f_print(fout, "\tsyslog(LOG_ERR, \"%%s\", msg);\n"); 694 f_print(fout, "#endif\n"); 695 f_print(fout, "}\n"); 696 } 697 698 /* 699 * Write the timeout function 700 */ 701 static void 702 write_timeout_func(void) 703 { 704 if (!timerflag) 705 return; 706 707 f_print(fout, "\n"); 708 f_print(fout, "static void\n"); 709 f_print(fout, "closedown(int sig)\n"); 710 f_print(fout, "{\n"); 711 if (mtflag) 712 f_print(fout, "\tpthread_mutex_lock(&_svcstate_lock);\n"); 713 f_print(fout, "\tif (_rpcsvcstate == _IDLE) {\n"); 714 f_print(fout, "\t\textern fd_set svc_fdset;\n"); 715 f_print(fout, "\t\tstatic int size;\n"); 716 f_print(fout, "\t\tint i, openfd;\n"); 717 if (tirpcflag && pmflag) { 718 f_print(fout, "\t\tstruct t_info tinfo;\n\n"); 719 f_print(fout, 720 "\t\tif (!t_getinfo(0, &tinfo) && (tinfo.servtype == T_CLTS))\n"); 721 } else { 722 f_print(fout, "\n\t\tif (_rpcfdtype == SOCK_DGRAM)\n"); 723 } 724 f_print(fout, "\t\t\texit(0);\n"); 725 f_print(fout, "\t\tif (size == 0) {\n"); 726 if (tirpcflag) { 727 f_print(fout, "\t\t\tstruct rlimit rl;\n\n"); 728 f_print(fout, "\t\t\trl.rlim_max = 0;\n"); 729 f_print(fout, "\t\t\tif (getrlimit(RLIMIT_NOFILE, &rl) == -1)\n"); 730 f_print(fout, "\t\t\t\treturn;\n"); 731 f_print(fout, "\t\t\tif ((size = rl.rlim_max) == 0) {\n"); 732 733 if (mtflag) 734 f_print(fout, "\t\t\t\tpthread_mutex_unlock(&_svcstate_lock);\n"); 735 736 f_print(fout, "\t\t\t\treturn;\n\t\t\t}\n"); 737 } else { 738 f_print(fout, "\t\t\tsize = getdtablesize();\n"); 739 } 740 f_print(fout, "\t\t}\n"); 741 f_print(fout, 742 "\t\tfor (i = 0, openfd = 0; i < size && openfd < 2; i++)\n"); 743 f_print(fout, "\t\t\tif (FD_ISSET(i, &svc_fdset))\n"); 744 f_print(fout, "\t\t\t\topenfd++;\n"); 745 f_print(fout, "\t\tif (openfd <= 1)\n"); 746 f_print(fout, "\t\t\texit(0);\n"); 747 f_print(fout, "\t}\n"); 748 f_print(fout, "\tif (_rpcsvcstate == _SERVED)\n"); 749 f_print(fout, "\t\t_rpcsvcstate = _IDLE;\n\n"); 750 if (mtflag) 751 f_print(fout, "\tpthread_mutex_unlock(&_svcstate_lock);\n"); 752 753 f_print(fout, "\t(void) signal(SIGALRM, closedown);\n"); 754 f_print(fout, "\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n"); 755 f_print(fout, "}\n"); 756 757 } 758 759 /* 760 * Write the most of port monitor support 761 */ 762 static void 763 write_pm_most(const char *infile, int netflag) 764 { 765 list *l; 766 definition *def; 767 version_list *vp; 768 769 if (tirpc_socket) { 770 f_print(fout, 771 "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n"); 772 f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n"); 773 } else { 774 f_print(fout, "\tif (!ioctl(0, I_LOOK, mname) &&\n"); 775 f_print(fout, "\t\t(!strcmp(mname, \"sockmod\") ||"); 776 f_print(fout, " !strcmp(mname, \"timod\"))) {\n"); 777 } 778 f_print(fout, "\t\tchar *netid;\n"); 779 if (!netflag) { /* Not included by -n option */ 780 f_print(fout, "\t\tstruct netconfig *nconf = NULL;\n"); 781 f_print(fout, "\t\tSVCXPRT *%s;\n", TRANSP); 782 } 783 if (timerflag) 784 f_print(fout, "\t\tint pmclose;\n"); 785 /* 786 * Not necessary, defined in /usr/include/stdlib 787 * f_print(fout, "\t\textern char *getenv();\n"); 788 */ 789 f_print(fout, "\n"); 790 if (tirpc_socket) { 791 f_print(fout, "\t\tif (saddr.ss_family != AF_INET &&\n"); 792 f_print(fout, "\t\t saddr.ss_family != AF_INET6)\n"); 793 f_print(fout, "\t\t\texit(1);\n"); 794 f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n"); 795 f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n"); 796 f_print(fout, "\t\t\texit(1);\n"); 797 } 798 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 799 open_log_file(infile, "\t\t"); 800 f_print(fout, "\n\t\tif ((netid = \ 801 getenv(\"NLSPROVIDER\")) == NULL) {\n"); 802 803 if (timerflag) { 804 f_print(fout, "\t\t/* started from inetd */\n"); 805 f_print(fout, "\t\t\tpmclose = 1;\n"); 806 } 807 f_print(fout, 808 "\t\t} else {\n"); 809 f_print(fout, "\t\t\tif ((nconf = getnetconfigent(netid)) == NULL)\n"); 810 sprintf(_errbuf, "cannot get transport info"); 811 print_err_message("\t\t\t\t"); 812 if (timerflag) { 813 if (tirpc_socket) 814 f_print(fout, "\n\t\t\tpmclose = 1;\t/* XXX */\n"); 815 else 816 f_print(fout, 817 "\n\t\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n"); 818 } 819 f_print(fout, "\t\t}\n"); 820 /* 821 * A kludgy support for inetd services. Inetd only works with 822 * sockmod, and RPC works only with timod, hence all this jugglery 823 */ 824 if (!tirpc_socket) { 825 f_print(fout, "\t\tif (strcmp(mname, \"sockmod\") == 0) {\n"); 826 f_print(fout, "\t\t\tif (ioctl(0, I_POP, 0) || "); 827 f_print(fout, "ioctl(0, I_PUSH, \"timod\")) {\n"); 828 sprintf(_errbuf, "could not get the right module"); 829 print_err_message("\t\t\t\t"); 830 f_print(fout, "\t\t\t\texit(1);\n"); 831 f_print(fout, "\t\t\t}\n"); 832 f_print(fout, "\t\t}\n"); 833 } 834 if (tirpcflag) { 835 f_print(fout, 836 "\t\tif ((%s = svc_tli_create(0, nconf, NULL, \ 837 RPC_MAXDATASIZE, RPC_MAXDATASIZE)) \ 838 == NULL) {\n", 839 TRANSP); 840 } else { 841 f_print(fout, 842 "\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) \ 843 == NULL) {\n", 844 TRANSP); 845 } 846 sprintf(_errbuf, "cannot create server handle"); 847 print_err_message("\t\t\t"); 848 f_print(fout, "\t\t\texit(1);\n"); 849 f_print(fout, "\t\t}\n"); 850 f_print(fout, "\t\tif (nconf)\n"); 851 f_print(fout, "\t\t\tfreenetconfigent(nconf);\n"); 852 for (l = defined; l != NULL; l = l->next) { 853 def = (definition *) l->val; 854 if (def->def_kind != DEF_PROGRAM) { 855 continue; 856 } 857 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 858 f_print(fout, 859 "\t\tif (!svc_reg(%s, %s, %s, ", 860 TRANSP, def->def_name, vp->vers_name); 861 pvname(def->def_name, vp->vers_num); 862 f_print(fout, ", 0)) {\n"); 863 (void) sprintf(_errbuf, "unable to register (%s, %s).", 864 def->def_name, vp->vers_name); 865 print_err_message("\t\t\t"); 866 f_print(fout, "\t\t\texit(1);\n"); 867 f_print(fout, "\t\t}\n"); 868 } 869 } 870 if (timerflag) { 871 f_print(fout, "\t\tif (pmclose) {\n"); 872 f_print(fout, "\t\t\t(void) signal(SIGALRM, closedown);\n"); 873 f_print(fout, "\t\t\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n"); 874 f_print(fout, "\t\t}\n"); 875 } 876 f_print(fout, "\t\tsvc_run();\n"); 877 f_print(fout, "\t\texit(1);\n"); 878 f_print(fout, "\t\t/* NOTREACHED */\n"); 879 f_print(fout, "\t}"); 880 } 881 882 /* 883 * Support for backgrounding the server if self started. 884 */ 885 static void 886 write_rpc_svc_fg(const char *infile, const char *sp) 887 { 888 f_print(fout, "#ifndef RPC_SVC_FG\n"); 889 f_print(fout, "%sint size;\n", sp); 890 if (tirpcflag) 891 f_print(fout, "%sstruct rlimit rl;\n", sp); 892 if (inetdflag) 893 f_print(fout, "%sint pid, i;\n\n", sp); 894 f_print(fout, "%spid = fork();\n", sp); 895 f_print(fout, "%sif (pid < 0) {\n", sp); 896 f_print(fout, "%s\tperror(\"cannot fork\");\n", sp); 897 f_print(fout, "%s\texit(1);\n", sp); 898 f_print(fout, "%s}\n", sp); 899 f_print(fout, "%sif (pid)\n", sp); 900 f_print(fout, "%s\texit(0);\n", sp); 901 /* get number of file descriptors */ 902 if (tirpcflag) { 903 f_print(fout, "%srl.rlim_max = 0;\n", sp); 904 f_print(fout, "%sif (getrlimit(RLIMIT_NOFILE, &rl) == -1) {\n", 905 sp); 906 f_print(fout, "%s\tperror(\"getrlimit\");\n", sp); 907 f_print(fout, "%s\texit(1);\n", sp); 908 f_print(fout, "%s}\n", sp); 909 f_print(fout, "%sif ((size = rl.rlim_max) == 0)\n", sp); 910 f_print(fout, "%s\texit(1);\n", sp); 911 } else { 912 f_print(fout, "%ssize = getdtablesize();\n", sp); 913 } 914 915 f_print(fout, "%sfor (i = 0; i < size; i++)\n", sp); 916 f_print(fout, "%s\t(void) close(i);\n", sp); 917 /* Redirect stderr and stdout to console */ 918 f_print(fout, "%si = open(\"/dev/console\", 2);\n", sp); 919 f_print(fout, "%s(void) dup2(i, 1);\n", sp); 920 f_print(fout, "%s(void) dup2(i, 2);\n", sp); 921 /* This removes control of the controlling terminal */ 922 if (tirpcflag) 923 f_print(fout, "%ssetsid();\n", sp); 924 else { 925 f_print(fout, "%si = open(\"/dev/tty\", 2);\n", sp); 926 f_print(fout, "%sif (i >= 0) {\n", sp); 927 f_print(fout, 928 "%s\t(void) ioctl(i, TIOCNOTTY, (char *)NULL);\n", sp); 929 f_print(fout, "%s\t(void) close(i);\n", sp); 930 f_print(fout, "%s}\n", sp); 931 } 932 if (!logflag) 933 open_log_file(infile, sp); 934 f_print(fout, "#endif\n"); 935 if (logflag) 936 open_log_file(infile, sp); 937 } 938 939 static void 940 open_log_file(const char *infile, const char *sp) 941 { 942 char *s; 943 944 s = strrchr(infile, '.'); 945 if (s) 946 *s = '\0'; 947 f_print(fout, "%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, infile); 948 if (s) 949 *s = '.'; 950 } 951 952 953 954 955 /* 956 * write a registration for the given transport for Inetd 957 */ 958 void 959 write_inetd_register(const char *transp) 960 { 961 list *l; 962 definition *def; 963 version_list *vp; 964 const char *sp; 965 int isudp; 966 char tmpbuf[32]; 967 968 if (inetdflag) 969 sp = "\t"; 970 else 971 sp = ""; 972 if (streq(transp, "udp")) 973 isudp = 1; 974 else 975 isudp = 0; 976 f_print(fout, "\n"); 977 if (inetdflag) { 978 f_print(fout, 979 "\tif ((_rpcfdtype == 0) || (_rpcfdtype == %s)) {\n", 980 isudp ? "SOCK_DGRAM" : "SOCK_STREAM"); 981 } 982 f_print(fout, "%s\t%s = svc%s_create(%s", 983 sp, TRANSP, transp, inetdflag? "sock": "RPC_ANYSOCK"); 984 if (!isudp) 985 f_print(fout, ", 0, 0"); 986 f_print(fout, ");\n"); 987 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 988 (void) sprintf(_errbuf, "cannot create %s service.", transp); 989 (void) sprintf(tmpbuf, "%s\t\t", sp); 990 print_err_message(tmpbuf); 991 f_print(fout, "%s\t\texit(1);\n", sp); 992 f_print(fout, "%s\t}\n", sp); 993 994 if (inetdflag) { 995 f_print(fout, "%s\tif (!_rpcpmstart)\n\t", sp); 996 f_print(fout, "%s\tproto = IPPROTO_%s;\n", 997 sp, isudp ? "UDP": "TCP"); 998 } 999 for (l = defined; l != NULL; l = l->next) { 1000 def = (definition *) l->val; 1001 if (def->def_kind != DEF_PROGRAM) { 1002 continue; 1003 } 1004 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 1005 f_print(fout, "%s\tif (!svc_register(%s, %s, %s, ", 1006 sp, TRANSP, def->def_name, vp->vers_name); 1007 pvname(def->def_name, vp->vers_num); 1008 if (inetdflag) 1009 f_print(fout, ", proto)) {\n"); 1010 else 1011 f_print(fout, ", IPPROTO_%s)) {\n", 1012 isudp ? "UDP": "TCP"); 1013 (void) sprintf(_errbuf, 1014 "unable to register (%s, %s, %s).", 1015 def->def_name, vp->vers_name, transp); 1016 print_err_message(tmpbuf); 1017 f_print(fout, "%s\t\texit(1);\n", sp); 1018 f_print(fout, "%s\t}\n", sp); 1019 } 1020 } 1021 if (inetdflag) 1022 f_print(fout, "\t}\n"); 1023 } 1024