1 /* $OpenBSD: rpc_svcout.c,v 1.10 2001/12/05 09:50:31 deraadt Exp $ */ 2 /* $NetBSD: rpc_svcout.c,v 1.7 1995/06/24 14:59:59 pk Exp $ */ 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 or with the express written consent of 10 * Sun Microsystems, Inc. 11 * 12 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 13 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 14 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 15 * 16 * Sun RPC is provided with no support and without any obligation on the 17 * part of Sun Microsystems, Inc. to assist in its use, correction, 18 * modification or enhancement. 19 * 20 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 21 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 22 * OR ANY PART THEREOF. 23 * 24 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 25 * or profits or other special, indirect and consequential damages, even if 26 * Sun has been advised of the possibility of such damages. 27 * 28 * Sun Microsystems, Inc. 29 * 2550 Garcia Avenue 30 * Mountain View, California 94043 31 */ 32 33 #ifndef lint 34 static char sccsid[] = "@(#)rpc_svcout.c 1.29 89/03/30 (C) 1987 SMI"; 35 #endif 36 37 /* 38 * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler 39 */ 40 #include <sys/cdefs.h> 41 #include <stdio.h> 42 #include <string.h> 43 #include "rpc_parse.h" 44 #include "rpc_util.h" 45 46 static char RQSTP[] = "rqstp"; 47 static char TRANSP[] = "transp"; 48 static char ARG[] = "argument"; 49 static char RESULT[] = "result"; 50 static char ROUTINE[] = "local"; 51 52 char _errbuf[256]; /* For all messages */ 53 54 void internal_proctype __P((proc_list *)); 55 static write_real_program __P((definition *)); 56 static write_program __P((definition *, char *)); 57 static printerr __P((char *, char *)); 58 static printif __P((char *, char *, char *, char *)); 59 static write_inetmost __P((char *)); 60 static print_return __P((char *)); 61 static print_pmapunset __P((char *)); 62 static print_err_message __P((char *)); 63 static write_timeout_func __P((void)); 64 static write_pm_most __P((char *, int)); 65 static write_caller_func __P((void)); 66 static write_rpc_svc_fg __P((char *, char *)); 67 static open_log_file __P((char *, char *)); 68 69 static 70 p_xdrfunc(rname, typename) 71 char *rname; 72 char *typename; 73 { 74 if (Cflag) 75 f_print(fout, "\t\txdr_%s = (xdrproc_t) xdr_%s;\n", 76 rname, stringfix(typename)); 77 else 78 f_print(fout, "\t\txdr_%s = xdr_%s;\n", rname, 79 stringfix(typename)); 80 } 81 82 void 83 internal_proctype(plist) 84 proc_list *plist; 85 { 86 f_print(fout, "static "); 87 ptype(plist->res_prefix, plist->res_type, 1); 88 f_print(fout, "*"); 89 } 90 91 /* 92 * write most of the service, that is, everything but the registrations. 93 */ 94 void 95 write_most(infile, netflag, nomain) 96 char *infile; /* our name */ 97 int netflag; 98 int nomain; 99 { 100 if (inetdflag || pmflag) { 101 char *var_type; 102 var_type = (nomain? "extern" : "static"); 103 f_print(fout, "%s int _rpcpmstart;", var_type); 104 f_print(fout, "\t\t/* Started by a port monitor ? */\n"); 105 f_print(fout, "%s int _rpcfdtype;", var_type); 106 f_print(fout, "\t\t/* Whether Stream or Datagram ? */\n"); 107 if (timerflag) { 108 f_print(fout, "%s int _rpcsvcdirty;", var_type); 109 f_print(fout, "\t/* Still serving ? */\n"); 110 } 111 write_svc_aux(nomain); 112 } 113 /* write out dispatcher and stubs */ 114 write_programs(nomain? (char *)NULL : "static"); 115 116 if (nomain) 117 return; 118 119 f_print(fout, "\nmain()\n"); 120 f_print(fout, "{\n"); 121 if (inetdflag) { 122 write_inetmost(infile); /* Includes call to write_rpc_svc_fg() */ 123 } else { 124 if (tirpcflag) { 125 if (netflag) { 126 f_print(fout, "\tSVCXPRT *%s;\n", TRANSP); 127 f_print(fout, "\tstruct netconfig *nconf = NULL;\n"); 128 } 129 f_print(fout, "\tpid_t pid;\n"); 130 f_print(fout, "\tint i;\n"); 131 f_print(fout, "\tchar mname[FMNAMESZ + 1];\n\n"); 132 write_pm_most(infile, netflag); 133 f_print(fout, "\telse {\n"); 134 write_rpc_svc_fg(infile, "\t\t"); 135 f_print(fout, "\t}\n"); 136 } else { 137 f_print(fout, "\tSVCXPRT *%s;\n", TRANSP); 138 f_print(fout, "\n"); 139 print_pmapunset("\t"); 140 } 141 } 142 143 if (logflag && !inetdflag) { 144 open_log_file(infile, "\t"); 145 } 146 } 147 148 /* 149 * write a registration for the given transport 150 */ 151 void 152 write_netid_register(transp) 153 char *transp; 154 { 155 list *l; 156 definition *def; 157 version_list *vp; 158 char *sp; 159 char tmpbuf[32]; 160 161 sp = ""; 162 f_print(fout, "\n"); 163 f_print(fout, "%s\tnconf = getnetconfigent(\"%s\");\n", sp, transp); 164 f_print(fout, "%s\tif (nconf == NULL) {\n", sp); 165 (void) sprintf(_errbuf, "cannot find %s netid.", transp); 166 snprintf(tmpbuf, sizeof tmpbuf, "%s\t\t", sp); 167 print_err_message(tmpbuf); 168 f_print(fout, "%s\t\texit(1);\n", sp); 169 f_print(fout, "%s\t}\n", sp); 170 f_print(fout, "%s\t%s = svc_tli_create(RPC_ANYFD, nconf, 0, 0, 0);\n", 171 sp, TRANSP); 172 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 173 (void) sprintf(_errbuf, "cannot create %s service.", transp); 174 print_err_message(tmpbuf); 175 f_print(fout, "%s\t\texit(1);\n", sp); 176 f_print(fout, "%s\t}\n", sp); 177 178 for (l = defined; l != NULL; l = l->next) { 179 def = (definition *) l->val; 180 if (def->def_kind != DEF_PROGRAM) 181 continue; 182 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 183 f_print(fout, 184 "%s\t(void) rpcb_unset(%s, %s, nconf);\n", 185 sp, def->def_name, vp->vers_name); 186 f_print(fout, 187 "%s\tif (!svc_reg(%s, %s, %s, ", 188 sp, TRANSP, def->def_name, vp->vers_name); 189 pvname(def->def_name, vp->vers_num); 190 f_print(fout, ", nconf)) {\n"); 191 (void) sprintf(_errbuf, "unable to register (%s, %s, %s).", 192 def->def_name, vp->vers_name, transp); 193 print_err_message(tmpbuf); 194 f_print(fout, "%s\t\texit(1);\n", sp); 195 f_print(fout, "%s\t}\n", sp); 196 } 197 } 198 f_print(fout, "%s\tfreenetconfigent(nconf);\n", sp); 199 } 200 201 /* 202 * write a registration for the given transport for TLI 203 */ 204 void 205 write_nettype_register(transp) 206 char *transp; 207 { 208 list *l; 209 definition *def; 210 version_list *vp; 211 212 for (l = defined; l != NULL; l = l->next) { 213 def = (definition *) l->val; 214 if (def->def_kind != DEF_PROGRAM) 215 continue; 216 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 217 f_print(fout, "\tif (!svc_create("); 218 pvname(def->def_name, vp->vers_num); 219 f_print(fout, ", %s, %s, \"%s\")) {\n", 220 def->def_name, vp->vers_name, transp); 221 (void) sprintf(_errbuf, 222 "unable to create (%s, %s) for %s.", 223 def->def_name, vp->vers_name, transp); 224 print_err_message("\t\t"); 225 f_print(fout, "\t\texit(1);\n"); 226 f_print(fout, "\t}\n"); 227 } 228 } 229 } 230 231 /* 232 * write the rest of the service 233 */ 234 void 235 write_rest() 236 { 237 f_print(fout, "\n"); 238 if (inetdflag) { 239 f_print(fout, "\tif (%s == (SVCXPRT *)NULL) {\n", TRANSP); 240 (void) sprintf(_errbuf, "could not create a handle"); 241 print_err_message("\t\t"); 242 f_print(fout, "\t\texit(1);\n"); 243 f_print(fout, "\t}\n"); 244 if (timerflag) { 245 f_print(fout, "\tif (_rpcpmstart) {\n"); 246 f_print(fout, 247 "\t\t(void) signal(SIGALRM, %s closedown);\n", 248 Cflag? "(SIG_PF)" : "(void(*)())"); 249 f_print(fout, "\t\t(void) alarm(_RPCSVC_CLOSEDOWN);\n"); 250 f_print(fout, "\t}\n"); 251 } 252 } 253 f_print(fout, "\tsvc_run();\n"); 254 (void) sprintf(_errbuf, "svc_run returned"); 255 print_err_message("\t"); 256 f_print(fout, "\texit(1);\n"); 257 f_print(fout, "\t/* NOTREACHED */\n"); 258 f_print(fout, "}\n"); 259 } 260 261 void 262 write_programs(storage) 263 char *storage; 264 { 265 definition *def; 266 list *l; 267 268 /* write out stubs for procedure definitions */ 269 for (l = defined; l != NULL; l = l->next) { 270 def = (definition *) l->val; 271 if (def->def_kind == DEF_PROGRAM) 272 write_real_program(def); 273 } 274 275 /* write out dispatcher for each program */ 276 for (l = defined; l != NULL; l = l->next) { 277 def = (definition *) l->val; 278 if (def->def_kind == DEF_PROGRAM) 279 write_program(def, storage); 280 } 281 } 282 283 /* write out definition of internal function (e.g. _printmsg_1(...)) 284 which calls server's defintion of actual function (e.g. printmsg_1(...)). 285 Unpacks single user argument of printmsg_1 to call-by-value format 286 expected by printmsg_1. */ 287 static 288 write_real_program(def) 289 definition *def; 290 { 291 version_list *vp; 292 proc_list *proc; 293 decl_list *l; 294 295 if (!newstyle) return; /* not needed for old style */ 296 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 297 for (proc = vp->procs; proc != NULL; proc = proc->next) { 298 f_print(fout, "\n"); 299 internal_proctype(proc); 300 f_print(fout, "\n_"); 301 pvname(proc->proc_name, vp->vers_num); 302 if (Cflag) { 303 f_print(fout, "("); 304 /* arg name */ 305 if (proc->arg_num > 1) 306 f_print(fout, proc->args.argname); 307 else 308 ptype(proc->args.decls->decl.prefix, 309 proc->args.decls->decl.type, 0); 310 f_print(fout, " *argp, struct svc_req *%s)\n", 311 RQSTP); 312 } else { 313 f_print(fout, "(argp, %s)\n", RQSTP); 314 /* arg name */ 315 if (proc->arg_num > 1) 316 f_print(fout, "\t%s *argp;\n", proc->args.argname); 317 else { 318 f_print(fout, "\t"); 319 ptype(proc->args.decls->decl.prefix, 320 proc->args.decls->decl.type, 0); 321 f_print(fout, " *argp;\n"); 322 } 323 f_print(fout, " struct svc_req *%s;\n", RQSTP); 324 } 325 326 f_print(fout, "{\n"); 327 f_print(fout, "\treturn("); 328 pvname_svc(proc->proc_name, vp->vers_num); 329 f_print(fout, "("); 330 if (proc->arg_num < 2) { /* single argument */ 331 if (!streq(proc->args.decls->decl.type, "void")) 332 f_print(fout, "*argp, "); /* non-void */ 333 } else { 334 for (l = proc->args.decls; l != NULL; l = l->next) 335 f_print(fout, "argp->%s, ", l->decl.name); 336 } 337 f_print(fout, "%s));\n}\n", RQSTP); 338 } 339 } 340 } 341 342 static 343 write_program(def, storage) 344 definition *def; 345 char *storage; 346 { 347 version_list *vp; 348 proc_list *proc; 349 int filled; 350 351 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 352 f_print(fout, "\n"); 353 if (storage != NULL) 354 f_print(fout, "%s ", storage); 355 f_print(fout, "void\n"); 356 pvname(def->def_name, vp->vers_num); 357 358 if (Cflag) { 359 f_print(fout, "(struct svc_req *%s, ", RQSTP); 360 f_print(fout, "register SVCXPRT *%s)\n", TRANSP); 361 } else { 362 f_print(fout, "(%s, %s)\n", RQSTP, TRANSP); 363 f_print(fout, " struct svc_req *%s;\n", RQSTP); 364 f_print(fout, " register SVCXPRT *%s;\n", TRANSP); 365 } 366 f_print(fout, "{\n"); 367 368 filled = 0; 369 f_print(fout, "\tunion {\n"); 370 for (proc = vp->procs; proc != NULL; proc = proc->next) { 371 if (proc->arg_num < 2) { /* single argument */ 372 if (streq(proc->args.decls->decl.type, 373 "void")) 374 continue; 375 filled = 1; 376 f_print(fout, "\t\t"); 377 ptype(proc->args.decls->decl.prefix, 378 proc->args.decls->decl.type, 0); 379 pvname(proc->proc_name, vp->vers_num); 380 f_print(fout, "_arg;\n"); 381 382 } else { 383 filled = 1; 384 f_print(fout, "\t\t%s", proc->args.argname); 385 f_print(fout, " "); 386 pvname(proc->proc_name, vp->vers_num); 387 f_print(fout, "_arg;\n"); 388 } 389 } 390 if (!filled) 391 f_print(fout, "\t\tint fill;\n"); 392 f_print(fout, "\t} %s;\n", ARG); 393 f_print(fout, "\tchar *%s;\n", RESULT); 394 395 if (Cflag) { 396 f_print(fout, "\txdrproc_t xdr_%s, xdr_%s;\n", ARG, RESULT); 397 f_print(fout, 398 "\tchar *(*%s)(char *, struct svc_req *);\n", 399 ROUTINE); 400 } else { 401 f_print(fout, "\tbool_t (*xdr_%s)(), (*xdr_%s)();\n", 402 ARG, RESULT); 403 f_print(fout, "\tchar *(*%s)();\n", ROUTINE); 404 } 405 f_print(fout, "\n"); 406 407 if (callerflag) 408 f_print(fout, "\tcaller = transp;\n"); /*EVAS*/ 409 if (timerflag) 410 f_print(fout, "\t_rpcsvcdirty = 1;\n"); 411 f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP); 412 if (!nullproc(vp->procs)) { 413 f_print(fout, "\tcase NULLPROC:\n"); 414 f_print(fout, 415 Cflag 416 ? "\t\t(void) svc_sendreply(%s, (xdrproc_t) xdr_void, (char *)NULL);\n" 417 : "\t\t(void) svc_sendreply(%s, xdr_void, (char *)NULL);\n", 418 TRANSP); 419 print_return("\t\t"); 420 f_print(fout, "\n"); 421 } 422 for (proc = vp->procs; proc != NULL; proc = proc->next) { 423 f_print(fout, "\tcase %s:\n", proc->proc_name); 424 if (proc->arg_num < 2) { /* single argument */ 425 p_xdrfunc(ARG, proc->args.decls->decl.type); 426 } else { 427 p_xdrfunc(ARG, proc->args.argname); 428 } 429 p_xdrfunc(RESULT, proc->res_type); 430 if (Cflag) 431 f_print(fout, 432 "\t\t%s = (char *(*)(char *, struct svc_req *)) ", 433 ROUTINE); 434 else 435 f_print(fout, "\t\t%s = (char *(*)()) ", ROUTINE); 436 437 if (newstyle) { /* new style: calls internal routine */ 438 f_print(fout,"_"); 439 } 440 if (!newstyle) 441 pvname_svc(proc->proc_name, vp->vers_num); 442 else 443 pvname(proc->proc_name, vp->vers_num); 444 f_print(fout, ";\n"); 445 f_print(fout, "\t\tbreak;\n\n"); 446 } 447 f_print(fout, "\tdefault:\n"); 448 printerr("noproc", TRANSP); 449 print_return("\t\t"); 450 f_print(fout, "\t}\n"); 451 452 f_print(fout, "\t(void) memset((char *)&%s, 0, sizeof (%s));\n", ARG, ARG); 453 printif ("getargs", TRANSP, "(caddr_t) &", ARG); 454 printerr("decode", TRANSP); 455 print_return("\t\t"); 456 f_print(fout, "\t}\n"); 457 458 if (Cflag) 459 f_print(fout, "\t%s = (*%s)((char *)&%s, %s);\n", 460 RESULT, ROUTINE, ARG, RQSTP); 461 else 462 f_print(fout, "\t%s = (*%s)(&%s, %s);\n", 463 RESULT, ROUTINE, ARG, RQSTP); 464 f_print(fout, 465 "\tif (%s != NULL && !svc_sendreply(%s, xdr_%s, %s)) {\n", 466 RESULT, TRANSP, RESULT, RESULT); 467 printerr("systemerr", TRANSP); 468 f_print(fout, "\t}\n"); 469 470 printif ("freeargs", TRANSP, "(caddr_t) &", ARG); 471 (void) sprintf(_errbuf, "unable to free arguments"); 472 print_err_message("\t\t"); 473 f_print(fout, "\t\texit(1);\n"); 474 f_print(fout, "\t}\n"); 475 print_return("\t"); 476 f_print(fout, "}\n"); 477 } 478 } 479 480 static 481 printerr(err, transp) 482 char *err; 483 char *transp; 484 { 485 f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp); 486 } 487 488 static 489 printif (proc, transp, prefix, arg) 490 char *proc; 491 char *transp; 492 char *prefix; 493 char *arg; 494 { 495 f_print(fout, "\tif (!svc_%s(%s, xdr_%s, %s%s)) {\n", 496 proc, transp, arg, prefix, arg); 497 } 498 499 nullproc(proc) 500 proc_list *proc; 501 { 502 for (; proc != NULL; proc = proc->next) { 503 if (streq(proc->proc_num, "0")) 504 return (1); 505 } 506 return (0); 507 } 508 509 static 510 write_inetmost(infile) 511 char *infile; 512 { 513 f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP); 514 f_print(fout, "\tint sock;\n"); 515 f_print(fout, "\tint proto;\n"); 516 f_print(fout, "\tstruct sockaddr_in saddr;\n"); 517 f_print(fout, "\tint asize = sizeof (saddr);\n"); 518 f_print(fout, "\n"); 519 f_print(fout, 520 "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n"); 521 f_print(fout, "\t\tint ssize = sizeof (int);\n\n"); 522 f_print(fout, "\t\tif (saddr.sin_family != AF_INET)\n"); 523 f_print(fout, "\t\t\texit(1);\n"); 524 f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n"); 525 f_print(fout, "\t\t (char *)&_rpcfdtype, &ssize) == -1)\n"); 526 f_print(fout, "\t\t\texit(1);\n"); 527 f_print(fout, "\t\tsock = 0;\n"); 528 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 529 f_print(fout, "\t\tproto = 0;\n"); 530 open_log_file(infile, "\t\t"); 531 f_print(fout, "\t} else {\n"); 532 write_rpc_svc_fg(infile, "\t\t"); 533 f_print(fout, "\t\tsock = RPC_ANYSOCK;\n"); 534 print_pmapunset("\t\t"); 535 f_print(fout, "\t}\n"); 536 } 537 538 static 539 print_return(space) 540 char *space; 541 { 542 if (exitnow) 543 f_print(fout, "%sexit(0);\n", space); 544 else { 545 if (timerflag) 546 f_print(fout, "%s_rpcsvcdirty = 0;\n", space); 547 f_print(fout, "%sreturn;\n", space); 548 } 549 } 550 551 static 552 print_pmapunset(space) 553 char *space; 554 { 555 version_list *vp; 556 definition *def; 557 list *l; 558 559 for (l = defined; l != NULL; l = l->next) { 560 def = (definition *) l->val; 561 if (def->def_kind == DEF_PROGRAM) { 562 for (vp = def->def.pr.versions; vp != NULL; 563 vp = vp->next) { 564 f_print(fout, "%s(void) pmap_unset(%s, %s);\n", 565 space, def->def_name, vp->vers_name); 566 } 567 } 568 } 569 } 570 571 static 572 print_err_message(space) 573 char *space; 574 { 575 if (logflag) 576 f_print(fout, "%ssyslog(LOG_ERR, \"%s\");\n", space, _errbuf); 577 else if (inetdflag || pmflag) 578 f_print(fout, "%s_msgout(\"%s\");\n", space, _errbuf); 579 else 580 f_print(fout, "%sfprintf(stderr, \"%s\");\n", space, _errbuf); 581 } 582 583 /* 584 * Write the server auxiliary function (_msgout, timeout) 585 */ 586 void 587 write_svc_aux(nomain) 588 int nomain; 589 { 590 if (!logflag) 591 write_msg_out(); 592 if (!nomain) 593 write_timeout_func(); 594 if (callerflag) /*EVAS*/ 595 write_caller_func(); /*EVAS*/ 596 } 597 598 /* 599 * Write the _msgout function 600 */ 601 602 write_msg_out() 603 { 604 f_print(fout, "\n"); 605 f_print(fout, "static\n"); 606 if (!Cflag) { 607 f_print(fout, "void _msgout(msg)\n"); 608 f_print(fout, "\tchar *msg;\n"); 609 } else { 610 f_print(fout, "void _msgout(char *msg)\n"); 611 } 612 f_print(fout, "{\n"); 613 f_print(fout, "#ifdef RPC_SVC_FG\n"); 614 if (inetdflag || pmflag) 615 f_print(fout, "\tif (_rpcpmstart)\n"); 616 f_print(fout, "\t\tsyslog(LOG_ERR, msg);\n"); 617 f_print(fout, "\telse {\n"); 618 f_print(fout, "\t\t(void) write(STDERR_FILENO, msg, strlen(msg));\n"); 619 f_print(fout, "\t\t(void) write(STDERR_FILENO, \"\\n\", 1);\n"); 620 f_print(fout, "\t}\n#else\n"); 621 f_print(fout, "\tsyslog(LOG_ERR, msg);\n"); 622 f_print(fout, "#endif\n"); 623 f_print(fout, "}\n"); 624 } 625 626 /* 627 * Write the timeout function 628 */ 629 static 630 write_timeout_func() 631 { 632 if (!timerflag) 633 return; 634 f_print(fout, "\n"); 635 f_print(fout, "static void\n"); 636 f_print(fout, "closedown()\n"); 637 f_print(fout, "{\n"); 638 f_print(fout, "\tint save_errno = errno;\n\n"); 639 f_print(fout, "\tif (_rpcsvcdirty == 0) {\n"); 640 f_print(fout, "\t\textern fd_set *__svc_fdset;\n"); 641 f_print(fout, "\t\textern int __svc_fdsetsize;\n"); 642 f_print(fout, "\t\tint i, openfd;\n"); 643 if (tirpcflag && pmflag) { 644 f_print(fout, "\t\tstruct t_info tinfo;\n\n"); 645 f_print(fout, "\t\tif (!t_getinfo(0, &tinfo) && (tinfo.servtype == T_CLTS))\n"); 646 } else { 647 f_print(fout, "\n\t\tif (_rpcfdtype == SOCK_DGRAM)\n"); 648 } 649 f_print(fout, "\t\t\t_exit(0);\n"); 650 f_print(fout, "\t\tfor (i = 0, openfd = 0; i < __svc_fdsetsize && openfd < 2; i++)\n"); 651 f_print(fout, "\t\t\tif (FD_ISSET(i, __svc_fdset))\n"); 652 f_print(fout, "\t\t\t\topenfd++;\n"); 653 f_print(fout, "\t\tif (openfd <= (_rpcpmstart?0:1))\n"); 654 f_print(fout, "\t\t\t_exit(0);\n"); 655 f_print(fout, "\t}\n"); 656 f_print(fout, "\t(void) alarm(_RPCSVC_CLOSEDOWN);\n"); 657 f_print(fout, "\terrno = save_errno;\n"); 658 f_print(fout, "}\n"); 659 } 660 661 static 662 write_caller_func() /*EVAS*/ 663 { 664 #define P(s) f_print(fout, s); 665 666 P("\n"); 667 P("char *svc_caller()\n"); 668 P("{\n"); 669 P(" struct sockaddr_in actual;\n"); 670 P(" struct hostent *hp;\n"); 671 P(" static struct in_addr prev;\n"); 672 P(" static char cname[128];\n\n"); 673 674 P(" actual = *svc_getcaller(caller);\n\n"); 675 676 P(" if (memcmp((char *)&actual.sin_addr, (char *)&prev,\n"); 677 P(" sizeof(struct in_addr)) == 0)\n"); 678 P(" return (cname);\n\n"); 679 680 P(" prev = actual.sin_addr;\n\n"); 681 682 P(" hp = gethostbyaddr((char *) &actual.sin_addr, sizeof(actual.sin_addr), AF_INET);\n"); 683 P(" if (hp == NULL) { /* dummy one up */\n"); 684 P(" extern char *inet_ntoa();\n"); 685 P(" strcpy(cname, inet_ntoa(actual.sin_addr));\n"); 686 P(" } else {\n"); 687 P(" strcpy(cname, hp->h_name);\n"); 688 P(" }\n\n"); 689 690 P(" return (cname);\n"); 691 P("}\n"); 692 693 #undef P 694 } 695 696 /* 697 * Write the most of port monitor support 698 */ 699 static 700 write_pm_most(infile, netflag) 701 char *infile; 702 int netflag; 703 { 704 list *l; 705 definition *def; 706 version_list *vp; 707 708 f_print(fout, "\tif (!ioctl(0, I_LOOK, mname) &&\n"); 709 f_print(fout, "\t\t(!strcmp(mname, \"sockmod\") ||"); 710 f_print(fout, " !strcmp(mname, \"timod\"))) {\n"); 711 f_print(fout, "\t\tchar *netid;\n"); 712 if (!netflag) { /* Not included by -n option */ 713 f_print(fout, "\t\tstruct netconfig *nconf = NULL;\n"); 714 f_print(fout, "\t\tSVCXPRT *%s;\n", TRANSP); 715 } 716 if (timerflag) 717 f_print(fout, "\t\tint pmclose;\n"); 718 /* not necessary, defined in /usr/include/stdlib */ 719 /* f_print(fout, "\t\textern char *getenv();\n");*/ 720 f_print(fout, "\n"); 721 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 722 if (logflag) 723 open_log_file(infile, "\t\t"); 724 f_print(fout, "\t\tif ((netid = getenv(\"NLSPROVIDER\")) == NULL) {\n"); 725 sprintf(_errbuf, "cannot get transport name"); 726 print_err_message("\t\t\t"); 727 f_print(fout, "\t\t} else if ((nconf = getnetconfigent(netid)) == NULL) {\n"); 728 sprintf(_errbuf, "cannot get transport info"); 729 print_err_message("\t\t\t"); 730 f_print(fout, "\t\t}\n"); 731 /* 732 * A kludgy support for inetd services. Inetd only works with 733 * sockmod, and RPC works only with timod, hence all this jugglery 734 */ 735 f_print(fout, "\t\tif (strcmp(mname, \"sockmod\") == 0) {\n"); 736 f_print(fout, "\t\t\tif (ioctl(0, I_POP, 0) || ioctl(0, I_PUSH, \"timod\")) {\n"); 737 sprintf(_errbuf, "could not get the right module"); 738 print_err_message("\t\t\t\t"); 739 f_print(fout, "\t\t\t\texit(1);\n"); 740 f_print(fout, "\t\t\t}\n"); 741 f_print(fout, "\t\t}\n"); 742 if (timerflag) 743 f_print(fout, "\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n"); 744 f_print(fout, "\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) == NULL) {\n", 745 TRANSP); 746 sprintf(_errbuf, "cannot create server handle"); 747 print_err_message("\t\t\t"); 748 f_print(fout, "\t\t\texit(1);\n"); 749 f_print(fout, "\t\t}\n"); 750 f_print(fout, "\t\tif (nconf)\n"); 751 f_print(fout, "\t\t\tfreenetconfigent(nconf);\n"); 752 for (l = defined; l != NULL; l = l->next) { 753 def = (definition *) l->val; 754 if (def->def_kind != DEF_PROGRAM) { 755 continue; 756 } 757 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 758 f_print(fout, 759 "\t\tif (!svc_reg(%s, %s, %s, ", 760 TRANSP, def->def_name, vp->vers_name); 761 pvname(def->def_name, vp->vers_num); 762 f_print(fout, ", 0)) {\n"); 763 (void) sprintf(_errbuf, "unable to register (%s, %s).", 764 def->def_name, vp->vers_name); 765 print_err_message("\t\t\t"); 766 f_print(fout, "\t\t\texit(1);\n"); 767 f_print(fout, "\t\t}\n"); 768 } 769 } 770 if (timerflag) { 771 f_print(fout, "\t\tif (pmclose) {\n"); 772 f_print(fout, "\t\t\t(void) signal(SIGALRM, %s closedown);\n", 773 Cflag? "(SIG_PF)" : "(void(*)())"); 774 f_print(fout, "\t\t\t(void) alarm(_RPCSVC_CLOSEDOWN);\n"); 775 f_print(fout, "\t\t}\n"); 776 } 777 f_print(fout, "\t\tsvc_run();\n"); 778 f_print(fout, "\t\texit(1);\n"); 779 f_print(fout, "\t\t/* NOTREACHED */\n"); 780 f_print(fout, "\t}\n"); 781 } 782 783 /* 784 * Support for backgrounding the server if self started. 785 */ 786 static 787 write_rpc_svc_fg(infile, sp) 788 char *infile; 789 char *sp; 790 { 791 f_print(fout, "#ifndef RPC_SVC_FG\n"); 792 f_print(fout, "%sint size;\n", sp); 793 if (tirpcflag) 794 f_print(fout, "%sstruct rlimit rl;\n", sp); 795 if (inetdflag) 796 f_print(fout, "%sint pid, i;\n\n", sp); 797 f_print(fout, "%spid = fork();\n", sp); 798 f_print(fout, "%sif (pid < 0) {\n", sp); 799 f_print(fout, "%s\tperror(\"cannot fork\");\n", sp); 800 f_print(fout, "%s\texit(1);\n", sp); 801 f_print(fout, "%s}\n", sp); 802 f_print(fout, "%sif (pid)\n", sp); 803 f_print(fout, "%s\texit(0);\n", sp); 804 /* get number of file descriptors */ 805 if (tirpcflag) { 806 f_print(fout, "%srl.rlim_max = 0;\n", sp); 807 f_print(fout, "%sgetrlimit(RLIMIT_NOFILE, &rl);\n", sp); 808 f_print(fout, "%sif ((size = rl.rlim_max) == 0)\n", sp); 809 f_print(fout, "%s\texit(1);\n", sp); 810 } else { 811 f_print(fout, "%ssize = getdtablesize();\n", sp); 812 } 813 814 f_print(fout, "%sfor (i = 0; i < size; i++)\n", sp); 815 f_print(fout, "%s\t(void) close(i);\n", sp); 816 /* Redirect stderr and stdout to console */ 817 f_print(fout, "%si = open(\"/dev/console\", 2);\n", sp); 818 f_print(fout, "%s(void) dup2(i, 1);\n", sp); 819 f_print(fout, "%s(void) dup2(i, 2);\n", sp); 820 /* This removes control of the controlling terminal */ 821 if (tirpcflag) 822 f_print(fout, "%ssetsid();\n", sp); 823 else { 824 f_print(fout, "%si = open(\"/dev/tty\", 2);\n", sp); 825 f_print(fout, "%sif (i >= 0) {\n", sp); 826 f_print(fout, "%s\t(void) ioctl(i, TIOCNOTTY, (char *)NULL);\n", sp);; 827 f_print(fout, "%s\t(void) close(i);\n", sp); 828 f_print(fout, "%s}\n", sp); 829 } 830 if (!logflag) 831 open_log_file(infile, sp); 832 f_print(fout, "#endif\n"); 833 if (logflag) 834 open_log_file(infile, sp); 835 } 836 837 static 838 open_log_file(infile, sp) 839 char *infile; 840 char *sp; 841 { 842 char *s; 843 844 s = strrchr(infile, '.'); 845 if (s) 846 *s = '\0'; 847 f_print(fout,"%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, infile); 848 if (s) 849 *s = '.'; 850 } 851 852 /* 853 * write a registration for the given transport for Inetd 854 */ 855 void 856 write_inetd_register(transp) 857 char *transp; 858 { 859 list *l; 860 definition *def; 861 version_list *vp; 862 char *sp; 863 int isudp; 864 char tmpbuf[32]; 865 866 if (inetdflag) 867 sp = "\t"; 868 else 869 sp = ""; 870 if (streq(transp, "udp")) 871 isudp = 1; 872 else 873 isudp = 0; 874 f_print(fout, "\n"); 875 if (inetdflag) { 876 f_print(fout, "\tif (_rpcfdtype == 0 || _rpcfdtype == %s) {\n", 877 isudp ? "SOCK_DGRAM" : "SOCK_STREAM"); 878 } 879 if (inetdflag && streq(transp, "tcp")) { 880 f_print(fout, "%s\tif (_rpcpmstart)\n", sp); 881 882 f_print(fout, "%s\t\t%s = svc%s_create(%s", 883 sp, TRANSP, "fd", inetdflag? "sock": "RPC_ANYSOCK"); 884 if (!isudp) 885 f_print(fout, ", 0, 0"); 886 f_print(fout, ");\n"); 887 888 f_print(fout, "%s\telse\n", sp); 889 890 f_print(fout, "%s\t\t%s = svc%s_create(%s", 891 sp, TRANSP, transp, inetdflag? "sock": "RPC_ANYSOCK"); 892 if (!isudp) 893 f_print(fout, ", 0, 0"); 894 f_print(fout, ");\n"); 895 896 } else { 897 f_print(fout, "%s\t%s = svc%s_create(%s", 898 sp, TRANSP, transp, inetdflag? "sock": "RPC_ANYSOCK"); 899 if (!isudp) 900 f_print(fout, ", 0, 0"); 901 f_print(fout, ");\n"); 902 } 903 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 904 (void) sprintf(_errbuf, "cannot create %s service.", transp); 905 (void) sprintf(tmpbuf, "%s\t\t", sp); 906 print_err_message(tmpbuf); 907 f_print(fout, "%s\t\texit(1);\n", sp); 908 f_print(fout, "%s\t}\n", sp); 909 910 if (inetdflag) { 911 f_print(fout, "%s\tif (!_rpcpmstart)\n\t", sp); 912 f_print(fout, "%s\tproto = IPPROTO_%s;\n", 913 sp, isudp ? "UDP": "TCP"); 914 } 915 for (l = defined; l != NULL; l = l->next) { 916 def = (definition *) l->val; 917 if (def->def_kind != DEF_PROGRAM) { 918 continue; 919 } 920 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 921 f_print(fout, "%s\tif (!svc_register(%s, %s, %s, ", 922 sp, TRANSP, def->def_name, vp->vers_name); 923 pvname(def->def_name, vp->vers_num); 924 if (inetdflag) 925 f_print(fout, ", proto)) {\n"); 926 else 927 f_print(fout, ", IPPROTO_%s)) {\n", 928 isudp ? "UDP": "TCP"); 929 (void) sprintf(_errbuf, "unable to register (%s, %s, %s).", 930 def->def_name, vp->vers_name, transp); 931 print_err_message(tmpbuf); 932 f_print(fout, "%s\t\texit(1);\n", sp); 933 f_print(fout, "%s\t}\n", sp); 934 } 935 } 936 if (inetdflag) 937 f_print(fout, "\t}\n"); 938 } 939