1 /* $NetBSD: rpc_svcout.c,v 1.10 1997/10/18 10:54:07 lukem Exp $ */ 2 /* 3 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 4 * unrestricted use provided that this legend is included on all tape 5 * media and as a part of the software program in whole or part. Users 6 * may copy or modify Sun RPC without charge, but are not authorized 7 * to license or distribute it to anyone else except as part of a product or 8 * program developed by the user or with the express written consent of 9 * Sun Microsystems, Inc. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)rpc_svcout.c 1.29 89/03/30 (C) 1987 SMI"; 36 #else 37 __RCSID("$NetBSD: rpc_svcout.c,v 1.10 1997/10/18 10:54:07 lukem Exp $"); 38 #endif 39 #endif 40 41 /* 42 * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler 43 */ 44 #include <stdio.h> 45 #include <string.h> 46 #include "rpc_scan.h" 47 #include "rpc_parse.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 56 static void p_xdrfunc __P((char *, char *)); 57 static void internal_proctype __P((proc_list *)); 58 static void write_real_program __P((definition *)); 59 static void write_program __P((definition *, char *)); 60 static void printerr __P((char *, char *)); 61 static void printif __P((char *, char *, char *, char *)); 62 static void write_inetmost __P((char *)); 63 static void print_return __P((char *)); 64 static void print_pmapunset __P((char *)); 65 static void print_err_message __P((char *)); 66 static void write_timeout_func __P((void)); 67 static void write_caller_func __P((void)); 68 static void write_pm_most __P((char *, int)); 69 static void write_rpc_svc_fg __P((char *, char *)); 70 static void open_log_file __P((char *, char *)); 71 72 char _errbuf[256]; /* For all messages */ 73 74 static void 75 p_xdrfunc(rname, typename) 76 char *rname; 77 char *typename; 78 { 79 if (Cflag) 80 f_print(fout, "\t\txdr_%s = (xdrproc_t) xdr_%s;\n", rname, 81 stringfix(typename)); 82 else 83 f_print(fout, "\t\txdr_%s = xdr_%s;\n", rname, stringfix(typename)); 84 } 85 86 static void 87 internal_proctype(plist) 88 proc_list *plist; 89 { 90 f_print(fout, "static "); 91 ptype(plist->res_prefix, plist->res_type, 1); 92 f_print(fout, "*"); 93 } 94 95 96 /* 97 * write most of the service, that is, everything but the registrations. 98 */ 99 void 100 write_most(infile, netflag, nomain) 101 char *infile; /* our name */ 102 int netflag; 103 int nomain; 104 { 105 if (inetdflag || pmflag) { 106 char *var_type; 107 var_type = (nomain ? "extern" : "static"); 108 f_print(fout, "%s int _rpcpmstart;", var_type); 109 f_print(fout, "\t\t/* Started by a port monitor ? */\n"); 110 f_print(fout, "%s int _rpcfdtype;", var_type); 111 f_print(fout, "\t\t/* Whether Stream or Datagram ? */\n"); 112 if (timerflag) { 113 f_print(fout, "%s int _rpcsvcdirty;", var_type); 114 f_print(fout, "\t/* Still serving ? */\n"); 115 } 116 write_svc_aux(nomain); 117 } 118 /* write out dispatcher and stubs */ 119 write_programs(nomain ? (char *) NULL : "static"); 120 121 if (nomain) 122 return; 123 124 f_print(fout, "\n\n"); 125 if (Cflag) 126 f_print(fout, "int main( int argc, char* argv[] );\n"); 127 f_print(fout, "\nint\n"); 128 if (Cflag) 129 f_print(fout, "main( int argc, char* argv[] )\n"); 130 else 131 f_print(fout, "main(argc, argv)\nint argc;\nchar *argv[];\n"); 132 f_print(fout, "{\n"); 133 if (inetdflag) { 134 write_inetmost(infile); /* Includes call to write_rpc_svc_fg() */ 135 } else { 136 if (tirpcflag) { 137 if (netflag) { 138 f_print(fout, "\tSVCXPRT *%s;\n", TRANSP); 139 f_print(fout, "\tstruct netconfig *nconf = NULL;\n"); 140 } 141 f_print(fout, "\tpid_t pid;\n"); 142 f_print(fout, "\tint i;\n"); 143 f_print(fout, "\tchar mname[FMNAMESZ + 1];\n\n"); 144 write_pm_most(infile, netflag); 145 f_print(fout, "\telse {\n"); 146 write_rpc_svc_fg(infile, "\t\t"); 147 f_print(fout, "\t}\n"); 148 } else { 149 f_print(fout, "\tSVCXPRT *%s;\n", TRANSP); 150 f_print(fout, "\n"); 151 print_pmapunset("\t"); 152 } 153 } 154 155 if (logflag && !inetdflag) { 156 open_log_file(infile, "\t"); 157 } 158 } 159 /* 160 * write a registration for the given transport 161 */ 162 void 163 write_netid_register(transp) 164 char *transp; 165 { 166 list *l; 167 definition *def; 168 version_list *vp; 169 char *sp; 170 char tmpbuf[32]; 171 172 sp = ""; 173 f_print(fout, "\n"); 174 f_print(fout, "%s\tnconf = getnetconfigent(\"%s\");\n", sp, transp); 175 f_print(fout, "%s\tif (nconf == NULL) {\n", sp); 176 (void) sprintf(_errbuf, "cannot find %s netid.", transp); 177 sprintf(tmpbuf, "%s\t\t", sp); 178 print_err_message(tmpbuf); 179 f_print(fout, "%s\t\texit(1);\n", sp); 180 f_print(fout, "%s\t}\n", sp); 181 f_print(fout, "%s\t%s = svc_tli_create(RPC_ANYFD, nconf, 0, 0, 0);\n", 182 sp, TRANSP); 183 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 184 (void) sprintf(_errbuf, "cannot create %s service.", transp); 185 print_err_message(tmpbuf); 186 f_print(fout, "%s\t\texit(1);\n", sp); 187 f_print(fout, "%s\t}\n", sp); 188 189 for (l = defined; l != NULL; l = l->next) { 190 def = (definition *) l->val; 191 if (def->def_kind != DEF_PROGRAM) { 192 continue; 193 } 194 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 195 f_print(fout, 196 "%s\t(void) rpcb_unset(%s, %s, nconf);\n", 197 sp, def->def_name, vp->vers_name); 198 f_print(fout, 199 "%s\tif (!svc_reg(%s, %s, %s, ", 200 sp, TRANSP, def->def_name, vp->vers_name); 201 pvname(def->def_name, vp->vers_num); 202 f_print(fout, ", nconf)) {\n"); 203 (void) sprintf(_errbuf, "unable to register (%s, %s, %s).", 204 def->def_name, vp->vers_name, transp); 205 print_err_message(tmpbuf); 206 f_print(fout, "%s\t\texit(1);\n", sp); 207 f_print(fout, "%s\t}\n", sp); 208 } 209 } 210 f_print(fout, "%s\tfreenetconfigent(nconf);\n", sp); 211 } 212 /* 213 * write a registration for the given transport for TLI 214 */ 215 void 216 write_nettype_register(transp) 217 char *transp; 218 { 219 list *l; 220 definition *def; 221 version_list *vp; 222 223 for (l = defined; l != NULL; l = l->next) { 224 def = (definition *) l->val; 225 if (def->def_kind != DEF_PROGRAM) { 226 continue; 227 } 228 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 229 f_print(fout, "\tif (!svc_create("); 230 pvname(def->def_name, vp->vers_num); 231 f_print(fout, ", %s, %s, \"%s\")) {\n ", 232 def->def_name, vp->vers_name, transp); 233 (void) sprintf(_errbuf, 234 "unable to create (%s, %s) for %s.", 235 def->def_name, vp->vers_name, transp); 236 print_err_message("\t\t"); 237 f_print(fout, "\t\texit(1);\n"); 238 f_print(fout, "\t}\n"); 239 } 240 } 241 } 242 /* 243 * write the rest of the service 244 */ 245 void 246 write_rest() 247 { 248 f_print(fout, "\n"); 249 if (inetdflag) { 250 f_print(fout, "\tif (%s == (SVCXPRT *)NULL) {\n", TRANSP); 251 (void) sprintf(_errbuf, "could not create a handle"); 252 print_err_message("\t\t"); 253 f_print(fout, "\t\texit(1);\n"); 254 f_print(fout, "\t}\n"); 255 if (timerflag) { 256 f_print(fout, "\tif (_rpcpmstart) {\n"); 257 f_print(fout, 258 "\t\t(void) signal(SIGALRM, %s closedown);\n", 259 Cflag ? "(SIG_PF)" : "(void(*)())"); 260 f_print(fout, "\t\t(void) alarm(_RPCSVC_CLOSEDOWN);\n"); 261 f_print(fout, "\t}\n"); 262 } 263 } 264 f_print(fout, "\tsvc_run();\n"); 265 (void) sprintf(_errbuf, "svc_run returned"); 266 print_err_message("\t"); 267 f_print(fout, "\texit(1);\n"); 268 f_print(fout, "\t/* NOTREACHED */\n"); 269 f_print(fout, "}\n"); 270 } 271 272 void 273 write_programs(storage) 274 char *storage; 275 { 276 list *l; 277 definition *def; 278 279 /* write out stubs for procedure definitions */ 280 for (l = defined; l != NULL; l = l->next) { 281 def = (definition *) l->val; 282 if (def->def_kind == DEF_PROGRAM) { 283 write_real_program(def); 284 } 285 } 286 287 /* write out dispatcher for each program */ 288 for (l = defined; l != NULL; l = l->next) { 289 def = (definition *) l->val; 290 if (def->def_kind == DEF_PROGRAM) { 291 write_program(def, storage); 292 } 293 } 294 295 296 } 297 /* write out definition of internal function (e.g. _printmsg_1(...)) 298 which calls server's defintion of actual function (e.g. printmsg_1(...)). 299 Unpacks single user argument of printmsg_1 to call-by-value format 300 expected by printmsg_1. */ 301 static void 302 write_real_program(def) 303 definition *def; 304 { 305 version_list *vp; 306 proc_list *proc; 307 decl_list *l; 308 309 if (!newstyle) 310 return; /* not needed for old style */ 311 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 312 for (proc = vp->procs; proc != NULL; proc = proc->next) { 313 f_print(fout, "\n"); 314 internal_proctype(proc); 315 f_print(fout, "\n_"); 316 pvname(proc->proc_name, vp->vers_num); 317 if (Cflag) { 318 f_print(fout, "("); 319 /* arg name */ 320 if (proc->arg_num > 1) 321 f_print(fout, proc->args.argname); 322 else 323 ptype(proc->args.decls->decl.prefix, 324 proc->args.decls->decl.type, 0); 325 f_print(fout, " *argp, struct svc_req *%s)\n", 326 RQSTP); 327 } else { 328 f_print(fout, "(argp, %s)\n", RQSTP); 329 /* arg name */ 330 if (proc->arg_num > 1) 331 f_print(fout, "\t%s *argp;\n", proc->args.argname); 332 else { 333 f_print(fout, "\t"); 334 ptype(proc->args.decls->decl.prefix, 335 proc->args.decls->decl.type, 0); 336 f_print(fout, " *argp;\n"); 337 } 338 f_print(fout, " struct svc_req *%s;\n", RQSTP); 339 } 340 341 f_print(fout, "{\n"); 342 f_print(fout, "\treturn("); 343 pvname_svc(proc->proc_name, vp->vers_num); 344 f_print(fout, "("); 345 if (proc->arg_num < 2) { /* single argument */ 346 if (!streq(proc->args.decls->decl.type, "void")) 347 f_print(fout, "*argp, "); /* non-void */ 348 } else { 349 for (l = proc->args.decls; l != NULL; l = l->next) 350 f_print(fout, "argp->%s, ", l->decl.name); 351 } 352 f_print(fout, "%s));\n}\n", RQSTP); 353 } 354 } 355 } 356 357 static void 358 write_program(def, storage) 359 definition *def; 360 char *storage; 361 { 362 version_list *vp; 363 proc_list *proc; 364 int filled; 365 366 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 367 if (Cflag) { 368 f_print(fout, "\n"); 369 if (storage != NULL) { 370 f_print(fout, "%s ", storage); 371 } 372 f_print(fout, "void "); 373 pvname(def->def_name, vp->vers_num); 374 f_print(fout, "(struct svc_req *%s, ", RQSTP); 375 f_print(fout, "SVCXPRT *%s);\n", TRANSP); 376 } 377 f_print(fout, "\n"); 378 if (storage != NULL) { 379 f_print(fout, "%s ", storage); 380 } 381 f_print(fout, "void\n"); 382 pvname(def->def_name, vp->vers_num); 383 384 if (Cflag) { 385 f_print(fout, "(struct svc_req *%s, ", RQSTP); 386 f_print(fout, "SVCXPRT *%s)\n", TRANSP); 387 } else { 388 f_print(fout, "(%s, %s)\n", RQSTP, TRANSP); 389 f_print(fout, " struct svc_req *%s;\n", RQSTP); 390 f_print(fout, " SVCXPRT *%s;\n", TRANSP); 391 } 392 393 f_print(fout, "{\n"); 394 395 filled = 0; 396 f_print(fout, "\tunion {\n"); 397 for (proc = vp->procs; proc != NULL; proc = proc->next) { 398 if (proc->arg_num < 2) { /* single argument */ 399 if (streq(proc->args.decls->decl.type, 400 "void")) { 401 continue; 402 } 403 filled = 1; 404 f_print(fout, "\t\t"); 405 ptype(proc->args.decls->decl.prefix, 406 proc->args.decls->decl.type, 0); 407 pvname(proc->proc_name, vp->vers_num); 408 f_print(fout, "_arg;\n"); 409 410 } else { 411 filled = 1; 412 f_print(fout, "\t\t%s", proc->args.argname); 413 f_print(fout, " "); 414 pvname(proc->proc_name, vp->vers_num); 415 f_print(fout, "_arg;\n"); 416 } 417 } 418 if (!filled) { 419 f_print(fout, "\t\tint fill;\n"); 420 } 421 f_print(fout, "\t} %s;\n", ARG); 422 f_print(fout, "\tchar *%s;\n", RESULT); 423 424 if (Cflag) { 425 f_print(fout, "\txdrproc_t xdr_%s, xdr_%s;\n", ARG, RESULT); 426 f_print(fout, 427 "\tchar *(*%s)(char *, struct svc_req *);\n", 428 ROUTINE); 429 } else { 430 f_print(fout, "\tbool_t (*xdr_%s)(), (*xdr_%s)();\n", ARG, RESULT); 431 f_print(fout, "\tchar *(*%s)();\n", ROUTINE); 432 } 433 434 f_print(fout, "\n"); 435 436 if (callerflag) 437 f_print(fout, "\tcaller = transp;\n"); /* EVAS */ 438 if (timerflag) 439 f_print(fout, "\t_rpcsvcdirty = 1;\n"); 440 f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP); 441 if (!nullproc(vp->procs)) { 442 f_print(fout, "\tcase NULLPROC:\n"); 443 f_print(fout, 444 Cflag 445 ? "\t\t(void) svc_sendreply(%s, (xdrproc_t) xdr_void, (char *)NULL);\n" 446 : "\t\t(void) svc_sendreply(%s, xdr_void, (char *)NULL);\n", 447 TRANSP); 448 print_return("\t\t"); 449 f_print(fout, "\n"); 450 } 451 for (proc = vp->procs; proc != NULL; proc = proc->next) { 452 f_print(fout, "\tcase %s:\n", proc->proc_name); 453 if (proc->arg_num < 2) { /* single argument */ 454 p_xdrfunc(ARG, proc->args.decls->decl.type); 455 } else { 456 p_xdrfunc(ARG, proc->args.argname); 457 } 458 p_xdrfunc(RESULT, proc->res_type); 459 if (Cflag) 460 f_print(fout, 461 "\t\t%s = (char *(*)(char *, struct svc_req *)) ", 462 ROUTINE); 463 else 464 f_print(fout, "\t\t%s = (char *(*)()) ", ROUTINE); 465 466 if (newstyle) { /* new style: calls internal routine */ 467 f_print(fout, "_"); 468 } 469 if (!newstyle) 470 pvname_svc(proc->proc_name, vp->vers_num); 471 else 472 pvname(proc->proc_name, vp->vers_num); 473 f_print(fout, ";\n"); 474 f_print(fout, "\t\tbreak;\n\n"); 475 } 476 f_print(fout, "\tdefault:\n"); 477 printerr("noproc", TRANSP); 478 print_return("\t\t"); 479 f_print(fout, "\t}\n"); 480 481 f_print(fout, "\t(void) memset((char *)&%s, 0, sizeof (%s));\n", ARG, ARG); 482 printif("getargs", TRANSP, "(caddr_t) &", ARG); 483 printerr("decode", TRANSP); 484 print_return("\t\t"); 485 f_print(fout, "\t}\n"); 486 487 if (Cflag) 488 f_print(fout, "\t%s = (*%s)((char *)&%s, %s);\n", 489 RESULT, ROUTINE, ARG, RQSTP); 490 else 491 f_print(fout, "\t%s = (*%s)(&%s, %s);\n", 492 RESULT, ROUTINE, ARG, RQSTP); 493 f_print(fout, 494 "\tif (%s != NULL && !svc_sendreply(%s, xdr_%s, %s)) {\n", 495 RESULT, TRANSP, RESULT, RESULT); 496 printerr("systemerr", TRANSP); 497 f_print(fout, "\t}\n"); 498 499 printif("freeargs", TRANSP, "(caddr_t) &", ARG); 500 (void) sprintf(_errbuf, "unable to free arguments"); 501 print_err_message("\t\t"); 502 f_print(fout, "\t\texit(1);\n"); 503 f_print(fout, "\t}\n"); 504 print_return("\t"); 505 f_print(fout, "}\n"); 506 } 507 } 508 509 static void 510 printerr(err, transp) 511 char *err; 512 char *transp; 513 { 514 f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp); 515 } 516 517 static void 518 printif(proc, transp, prefix, arg) 519 char *proc; 520 char *transp; 521 char *prefix; 522 char *arg; 523 { 524 f_print(fout, "\tif (!svc_%s(%s, xdr_%s, %s%s)) {\n", 525 proc, transp, arg, prefix, arg); 526 } 527 528 int 529 nullproc(proc) 530 proc_list *proc; 531 { 532 for (; proc != NULL; proc = proc->next) { 533 if (streq(proc->proc_num, "0")) { 534 return (1); 535 } 536 } 537 return (0); 538 } 539 540 static void 541 write_inetmost(infile) 542 char *infile; 543 { 544 f_print(fout, "\tSVCXPRT *%s = NULL;\n", TRANSP); 545 f_print(fout, "\tint sock;\n"); 546 f_print(fout, "\tint proto = 0;\n"); 547 f_print(fout, "\tstruct sockaddr_in saddr;\n"); 548 f_print(fout, "\tint asize = sizeof (saddr);\n"); 549 f_print(fout, "\n"); 550 f_print(fout, 551 "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n"); 552 f_print(fout, "\t\tint ssize = sizeof (int);\n\n"); 553 f_print(fout, "\t\tif (saddr.sin_family != AF_INET)\n"); 554 f_print(fout, "\t\t\texit(1);\n"); 555 f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n"); 556 f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n"); 557 f_print(fout, "\t\t\texit(1);\n"); 558 f_print(fout, "\t\tsock = 0;\n"); 559 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 560 f_print(fout, "\t\tproto = 0;\n"); 561 open_log_file(infile, "\t\t"); 562 f_print(fout, "\t} else {\n"); 563 write_rpc_svc_fg(infile, "\t\t"); 564 f_print(fout, "\t\tsock = RPC_ANYSOCK;\n"); 565 print_pmapunset("\t\t"); 566 f_print(fout, "\t}\n"); 567 } 568 569 static void 570 print_return(space) 571 char *space; 572 { 573 if (exitnow) 574 f_print(fout, "%sexit(0);\n", space); 575 else { 576 if (timerflag) 577 f_print(fout, "%s_rpcsvcdirty = 0;\n", space); 578 f_print(fout, "%sreturn;\n", space); 579 } 580 } 581 582 static void 583 print_pmapunset(space) 584 char *space; 585 { 586 list *l; 587 definition *def; 588 version_list *vp; 589 590 for (l = defined; l != NULL; l = l->next) { 591 def = (definition *) l->val; 592 if (def->def_kind == DEF_PROGRAM) { 593 for (vp = def->def.pr.versions; vp != NULL; 594 vp = vp->next) { 595 f_print(fout, "%s(void) pmap_unset(%s, %s);\n", 596 space, def->def_name, vp->vers_name); 597 } 598 } 599 } 600 } 601 602 static void 603 print_err_message(space) 604 char *space; 605 { 606 if (logflag) 607 f_print(fout, "%ssyslog(LOG_ERR, \"%s\");\n", space, _errbuf); 608 else 609 if (inetdflag || pmflag) 610 f_print(fout, "%s_msgout(\"%s\");\n", space, _errbuf); 611 else 612 f_print(fout, "%sfprintf(stderr, \"%s\");\n", space, _errbuf); 613 } 614 /* 615 * Write the server auxiliary function ( _msgout, timeout) 616 */ 617 void 618 write_svc_aux(nomain) 619 int nomain; 620 { 621 if (!logflag) 622 write_msg_out(); 623 if (!nomain) 624 write_timeout_func(); 625 if (callerflag) /* EVAS */ 626 write_caller_func(); /* EVAS */ 627 } 628 /* 629 * Write the _msgout function 630 */ 631 void 632 write_msg_out() 633 { 634 f_print(fout, "\n"); 635 f_print(fout, "static\n"); 636 if (!Cflag) { 637 f_print(fout, "void _msgout(msg)\n"); 638 f_print(fout, "\tchar *msg;\n"); 639 } else { 640 f_print(fout, "void _msgout(char* msg)\n"); 641 } 642 f_print(fout, "{\n"); 643 f_print(fout, "#ifdef RPC_SVC_FG\n"); 644 if (inetdflag || pmflag) 645 f_print(fout, "\tif (_rpcpmstart)\n"); 646 f_print(fout, "\t\tsyslog(LOG_ERR, msg);\n"); 647 f_print(fout, "\telse\n"); 648 f_print(fout, "\t\t(void) fprintf(stderr, \"%%s\\n\", msg);\n"); 649 f_print(fout, "#else\n"); 650 f_print(fout, "\tsyslog(LOG_ERR, msg);\n"); 651 f_print(fout, "#endif\n"); 652 f_print(fout, "}\n"); 653 } 654 /* 655 * Write the timeout function 656 */ 657 static void 658 write_timeout_func() 659 { 660 if (!timerflag) 661 return; 662 if (Cflag) { 663 f_print(fout, "\n"); 664 f_print(fout, "static void closedown(void);\n"); 665 } 666 f_print(fout, "\n"); 667 f_print(fout, "static void\n"); 668 f_print(fout, "closedown()\n"); 669 f_print(fout, "{\n"); 670 f_print(fout, "\tif (_rpcsvcdirty == 0) {\n"); 671 f_print(fout, "\t\textern fd_set svc_fdset;\n"); 672 f_print(fout, "\t\tstatic int size;\n"); 673 f_print(fout, "\t\tint i, openfd;\n"); 674 if (tirpcflag && pmflag) { 675 f_print(fout, "\t\tstruct t_info tinfo;\n\n"); 676 f_print(fout, "\t\tif (!t_getinfo(0, &tinfo) && (tinfo.servtype == T_CLTS))\n"); 677 } else { 678 f_print(fout, "\n\t\tif (_rpcfdtype == SOCK_DGRAM)\n"); 679 } 680 f_print(fout, "\t\t\texit(0);\n"); 681 f_print(fout, "\t\tif (size == 0) {\n"); 682 if (tirpcflag) { 683 f_print(fout, "\t\t\tstruct rlimit rl;\n\n"); 684 f_print(fout, "\t\t\trl.rlim_max = 0;\n"); 685 f_print(fout, "\t\t\tgetrlimit(RLIMIT_NOFILE, &rl);\n"); 686 f_print(fout, "\t\t\tif ((size = rl.rlim_max) == 0)\n"); 687 f_print(fout, "\t\t\t\treturn;\n"); 688 } else { 689 f_print(fout, "\t\t\tsize = getdtablesize();\n"); 690 } 691 f_print(fout, "\t\t}\n"); 692 f_print(fout, "\t\tfor (i = 0, openfd = 0; i < size && openfd < 2; i++)\n"); 693 f_print(fout, "\t\t\tif (FD_ISSET(i, &svc_fdset))\n"); 694 f_print(fout, "\t\t\t\topenfd++;\n"); 695 f_print(fout, "\t\tif (openfd <= (_rpcpmstart?0:1))\n"); 696 f_print(fout, "\t\t\texit(0);\n"); 697 f_print(fout, "\t}\n"); 698 f_print(fout, "\t(void) alarm(_RPCSVC_CLOSEDOWN);\n"); 699 f_print(fout, "}\n"); 700 } 701 702 static void 703 write_caller_func() 704 { /* EVAS */ 705 #define P(s) f_print(fout, s); 706 707 P("\n"); 708 P("char *svc_caller()\n"); 709 P("{\n"); 710 P(" struct sockaddr_in actual;\n"); 711 P(" struct hostent *hp;\n"); 712 P(" static struct in_addr prev;\n"); 713 P(" static char cname[128];\n\n"); 714 715 P(" actual = *svc_getcaller(caller);\n\n"); 716 717 P(" if (memcmp((char *)&actual.sin_addr, (char *)&prev,\n"); 718 P(" sizeof(struct in_addr)) == 0)\n"); 719 P(" return (cname);\n\n"); 720 721 P(" prev = actual.sin_addr;\n\n"); 722 723 P(" hp = gethostbyaddr((char *) &actual.sin_addr, sizeof(actual.sin_addr), AF_INET);\n"); 724 P(" if (hp == NULL) { /* dummy one up */\n"); 725 P(" extern char *inet_ntoa();\n"); 726 P(" strcpy(cname, inet_ntoa(actual.sin_addr));\n"); 727 P(" } else {\n"); 728 P(" strcpy(cname, hp->h_name);\n"); 729 P(" }\n\n"); 730 731 P(" return (cname);\n"); 732 P("}\n"); 733 734 #undef P 735 } 736 /* 737 * Write the most of port monitor support 738 */ 739 static void 740 write_pm_most(infile, netflag) 741 char *infile; 742 int netflag; 743 { 744 list *l; 745 definition *def; 746 version_list *vp; 747 748 f_print(fout, "\tif (!ioctl(0, I_LOOK, mname) &&\n"); 749 f_print(fout, "\t\t(!strcmp(mname, \"sockmod\") ||"); 750 f_print(fout, " !strcmp(mname, \"timod\"))) {\n"); 751 f_print(fout, "\t\tchar *netid;\n"); 752 if (!netflag) { /* Not included by -n option */ 753 f_print(fout, "\t\tstruct netconfig *nconf = NULL;\n"); 754 f_print(fout, "\t\tSVCXPRT *%s;\n", TRANSP); 755 } 756 if (timerflag) 757 f_print(fout, "\t\tint pmclose;\n"); 758 /* not necessary, defined in /usr/include/stdlib */ 759 /* f_print(fout, "\t\textern char *getenv();\n");*/ 760 f_print(fout, "\n"); 761 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 762 if (logflag) 763 open_log_file(infile, "\t\t"); 764 f_print(fout, "\t\tif ((netid = getenv(\"NLSPROVIDER\")) == NULL) {\n"); 765 sprintf(_errbuf, "cannot get transport name"); 766 print_err_message("\t\t\t"); 767 f_print(fout, "\t\t} else if ((nconf = getnetconfigent(netid)) == NULL) {\n"); 768 sprintf(_errbuf, "cannot get transport info"); 769 print_err_message("\t\t\t"); 770 f_print(fout, "\t\t}\n"); 771 /* 772 * A kludgy support for inetd services. Inetd only works with 773 * sockmod, and RPC works only with timod, hence all this jugglery 774 */ 775 f_print(fout, "\t\tif (strcmp(mname, \"sockmod\") == 0) {\n"); 776 f_print(fout, "\t\t\tif (ioctl(0, I_POP, 0) || ioctl(0, I_PUSH, \"timod\")) {\n"); 777 sprintf(_errbuf, "could not get the right module"); 778 print_err_message("\t\t\t\t"); 779 f_print(fout, "\t\t\t\texit(1);\n"); 780 f_print(fout, "\t\t\t}\n"); 781 f_print(fout, "\t\t}\n"); 782 if (timerflag) 783 f_print(fout, "\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n"); 784 f_print(fout, "\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) == NULL) {\n", 785 TRANSP); 786 sprintf(_errbuf, "cannot create server handle"); 787 print_err_message("\t\t\t"); 788 f_print(fout, "\t\t\texit(1);\n"); 789 f_print(fout, "\t\t}\n"); 790 f_print(fout, "\t\tif (nconf)\n"); 791 f_print(fout, "\t\t\tfreenetconfigent(nconf);\n"); 792 for (l = defined; l != NULL; l = l->next) { 793 def = (definition *) l->val; 794 if (def->def_kind != DEF_PROGRAM) { 795 continue; 796 } 797 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 798 f_print(fout, 799 "\t\tif (!svc_reg(%s, %s, %s, ", 800 TRANSP, def->def_name, vp->vers_name); 801 pvname(def->def_name, vp->vers_num); 802 f_print(fout, ", 0)) {\n"); 803 (void) sprintf(_errbuf, "unable to register (%s, %s).", 804 def->def_name, vp->vers_name); 805 print_err_message("\t\t\t"); 806 f_print(fout, "\t\t\texit(1);\n"); 807 f_print(fout, "\t\t}\n"); 808 } 809 } 810 if (timerflag) { 811 f_print(fout, "\t\tif (pmclose) {\n"); 812 f_print(fout, "\t\t\t(void) signal(SIGALRM, %s closedown);\n", 813 Cflag ? "(SIG_PF)" : "(void(*)())"); 814 f_print(fout, "\t\t\t(void) alarm(_RPCSVC_CLOSEDOWN);\n"); 815 f_print(fout, "\t\t}\n"); 816 } 817 f_print(fout, "\t\tsvc_run();\n"); 818 f_print(fout, "\t\texit(1);\n"); 819 f_print(fout, "\t\t/* NOTREACHED */\n"); 820 f_print(fout, "\t}\n"); 821 } 822 /* 823 * Support for backgrounding the server if self started. 824 */ 825 static void 826 write_rpc_svc_fg(infile, sp) 827 char *infile; 828 char *sp; 829 { 830 f_print(fout, "#ifndef RPC_SVC_FG\n"); 831 f_print(fout, "%sint size;\n", sp); 832 if (tirpcflag) 833 f_print(fout, "%sstruct rlimit rl;\n", sp); 834 if (inetdflag) 835 f_print(fout, "%sint pid, i;\n\n", sp); 836 f_print(fout, "%spid = fork();\n", sp); 837 f_print(fout, "%sif (pid < 0) {\n", sp); 838 f_print(fout, "%s\tperror(\"cannot fork\");\n", sp); 839 f_print(fout, "%s\texit(1);\n", sp); 840 f_print(fout, "%s}\n", sp); 841 f_print(fout, "%sif (pid)\n", sp); 842 f_print(fout, "%s\texit(0);\n", sp); 843 /* get number of file descriptors */ 844 if (tirpcflag) { 845 f_print(fout, "%srl.rlim_max = 0;\n", sp); 846 f_print(fout, "%sgetrlimit(RLIMIT_NOFILE, &rl);\n", sp); 847 f_print(fout, "%sif ((size = rl.rlim_max) == 0)\n", sp); 848 f_print(fout, "%s\texit(1);\n", sp); 849 } else { 850 f_print(fout, "%ssize = getdtablesize();\n", sp); 851 } 852 853 f_print(fout, "%sfor (i = 0; i < size; i++)\n", sp); 854 f_print(fout, "%s\t(void) close(i);\n", sp); 855 /* Redirect stderr and stdout to console */ 856 f_print(fout, "%si = open(\"/dev/console\", 2);\n", sp); 857 f_print(fout, "%s(void) dup2(i, 1);\n", sp); 858 f_print(fout, "%s(void) dup2(i, 2);\n", sp); 859 /* This removes control of the controlling terminal */ 860 if (tirpcflag) 861 f_print(fout, "%ssetsid();\n", sp); 862 else { 863 f_print(fout, "%si = open(\"/dev/tty\", 2);\n", sp); 864 f_print(fout, "%sif (i >= 0) {\n", sp); 865 f_print(fout, "%s\t(void) ioctl(i, TIOCNOTTY, (char *)NULL);\n", sp);; 866 f_print(fout, "%s\t(void) close(i);\n", sp); 867 f_print(fout, "%s}\n", sp); 868 } 869 if (!logflag) 870 open_log_file(infile, sp); 871 f_print(fout, "#endif\n"); 872 if (logflag) 873 open_log_file(infile, sp); 874 } 875 876 static void 877 open_log_file(infile, sp) 878 char *infile; 879 char *sp; 880 { 881 char *s, *p; 882 883 s = strrchr(infile, '.'); 884 if (s) 885 *s = '\0'; 886 p = strrchr(infile, '/'); 887 if (p) 888 p++; 889 else 890 p = infile; 891 f_print(fout, "%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, p); 892 if (s) 893 *s = '.'; 894 } 895 896 /* 897 * write a registration for the given transport for Inetd 898 */ 899 void 900 write_inetd_register(transp) 901 char *transp; 902 { 903 list *l; 904 definition *def; 905 version_list *vp; 906 char *sp; 907 int isudp; 908 char tmpbuf[32]; 909 910 if (inetdflag) 911 sp = "\t"; 912 else 913 sp = ""; 914 if (streq(transp, "udp")) 915 isudp = 1; 916 else 917 isudp = 0; 918 f_print(fout, "\n"); 919 if (inetdflag) { 920 f_print(fout, "\tif ((_rpcfdtype == 0) || (_rpcfdtype == %s)) {\n", 921 isudp ? "SOCK_DGRAM" : "SOCK_STREAM"); 922 } 923 if (inetdflag && streq(transp, "tcp")) { 924 f_print(fout, "%s\tif (_rpcpmstart)\n", sp); 925 926 f_print(fout, "%s\t\t%s = svc%s_create(%s", 927 sp, TRANSP, "fd", inetdflag ? "sock" : "RPC_ANYSOCK"); 928 if (!isudp) 929 f_print(fout, ", 0, 0"); 930 f_print(fout, ");\n"); 931 932 f_print(fout, "%s\telse\n", sp); 933 934 f_print(fout, "%s\t\t%s = svc%s_create(%s", 935 sp, TRANSP, transp, inetdflag ? "sock" : "RPC_ANYSOCK"); 936 if (!isudp) 937 f_print(fout, ", 0, 0"); 938 f_print(fout, ");\n"); 939 940 } else { 941 f_print(fout, "%s\t%s = svc%s_create(%s", 942 sp, TRANSP, transp, inetdflag ? "sock" : "RPC_ANYSOCK"); 943 if (!isudp) 944 f_print(fout, ", 0, 0"); 945 f_print(fout, ");\n"); 946 } 947 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 948 (void) sprintf(_errbuf, "cannot create %s service.", transp); 949 (void) sprintf(tmpbuf, "%s\t\t", sp); 950 print_err_message(tmpbuf); 951 f_print(fout, "%s\t\texit(1);\n", sp); 952 f_print(fout, "%s\t}\n", sp); 953 954 if (inetdflag) { 955 f_print(fout, "%s\tif (!_rpcpmstart)\n\t", sp); 956 f_print(fout, "%s\tproto = IPPROTO_%s;\n", 957 sp, isudp ? "UDP" : "TCP"); 958 } 959 for (l = defined; l != NULL; l = l->next) { 960 def = (definition *) l->val; 961 if (def->def_kind != DEF_PROGRAM) { 962 continue; 963 } 964 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 965 f_print(fout, "%s\tif (!svc_register(%s, %s, %s, ", 966 sp, TRANSP, def->def_name, vp->vers_name); 967 pvname(def->def_name, vp->vers_num); 968 if (inetdflag) 969 f_print(fout, ", proto)) {\n"); 970 else 971 f_print(fout, ", IPPROTO_%s)) {\n", 972 isudp ? "UDP" : "TCP"); 973 (void) sprintf(_errbuf, "unable to register (%s, %s, %s).", 974 def->def_name, vp->vers_name, transp); 975 print_err_message(tmpbuf); 976 f_print(fout, "%s\t\texit(1);\n", sp); 977 f_print(fout, "%s\t}\n", sp); 978 } 979 } 980 if (inetdflag) 981 f_print(fout, "\t}\n"); 982 } 983