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, MERCHANTABILITY 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 * @(#)rpc_svcout.c 1.4 90/04/13 SMI; 1.29 89/03/30 (C) 1987 SMI 30 * $FreeBSD: src/usr.bin/rpcgen/rpc_svcout.c,v 1.26 2008/08/12 13:38:06 dfr Exp $ 31 */ 32 33 /* 34 * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler 35 * Copyright (C) 1987, Sun Microsystems, Inc. 36 */ 37 #include <stdio.h> 38 #include <string.h> 39 #include "rpc_parse.h" 40 #include "rpc_scan.h" 41 #include "rpc_util.h" 42 43 static char RQSTP[] = "rqstp"; 44 static char TRANSP[] = "transp"; 45 static char ARG[] = "argument"; 46 static char RESULT[] = "result"; 47 static char ROUTINE[] = "local"; 48 static char RETVAL[] = "retval"; 49 50 char _errbuf[256]; /* For all messages */ 51 52 void internal_proctype(proc_list *); 53 static void write_real_program(definition *); 54 static void write_program(definition *, const char *); 55 static void printerr(const char *, const char *); 56 static void printif(const char *, const char *, const char *, const char *); 57 static void write_inetmost(const char *); 58 static void print_return(const char *); 59 static void print_pmapunset(const char *); 60 static void print_err_message(const char *); 61 static void write_timeout_func(void); 62 static void write_pm_most(const char *, int); 63 static void write_rpc_svc_fg(const char *, const char *); 64 static void open_log_file(const char *, const char *); 65 static void write_msg_out(void); 66 67 68 static void 69 p_xdrfunc(const char *rname, const char *typename) 70 { 71 f_print(fout, "\t\txdr_%s = (xdrproc_t) xdr_%s;\n", 72 rname, stringfix(typename)); 73 } 74 75 void 76 internal_proctype(proc_list *plist) 77 { 78 f_print(fout, "static "); 79 ptype(plist->res_prefix, plist->res_type, 1); 80 f_print(fout, "*"); 81 } 82 83 84 /* 85 * write most of the service, that is, everything but the registrations. 86 */ 87 void 88 write_most(const char *infile, int netflag, int nomain) 89 { 90 if (inetdflag || pmflag) { 91 const char *var_type; 92 var_type = (nomain? "extern" : "static"); 93 f_print(fout, "%s int _rpcpmstart;", var_type); 94 f_print(fout, "\t\t/* Started by a port monitor ? */\n"); 95 if (!tirpcflag || tirpc_socket) { 96 f_print(fout, "%s int _rpcfdtype;", var_type); 97 f_print(fout, "\n\t\t /* Whether Stream or " 98 "Datagram ? */\n"); 99 } 100 101 if (timerflag) { 102 f_print(fout, " /* States a server can be in " 103 "wrt request */\n\n"); 104 f_print(fout, "#define\t_IDLE 0\n"); 105 f_print(fout, "#define\t_SERVED 1\n"); 106 f_print(fout, "#define\t_SERVING 2\n\n"); 107 f_print(fout, "static int _rpcsvcstate = _IDLE;"); 108 f_print(fout, "\t /* Set when a request is " 109 "serviced */\n"); 110 111 if (mtflag) { 112 f_print(fout, "pthread_mutex_t _svcstate_lock;"); 113 f_print(fout, "\t\t\t/* Mutex lock for " 114 "variable _rpcsvcstate */\n"); 115 116 } 117 118 } 119 120 write_svc_aux(nomain); 121 } 122 /* write out dispatcher and stubs */ 123 write_programs(NULL); 124 125 if (nomain) 126 return; 127 128 f_print(fout, "\nint\n"); 129 f_print(fout, "main()\n"); 130 f_print(fout, "{\n"); 131 if (inetdflag) { 132 write_inetmost(infile); 133 /* Includes call to write_rpc_svc_fg() */ 134 } else { 135 if (tirpcflag) { 136 if (netflag) { 137 f_print(fout, 138 "\tregister SVCXPRT *%s;\n", TRANSP); 139 f_print(fout, 140 "\tstruct netconfig *nconf = NULL;\n"); 141 } 142 f_print(fout, "\tpid_t pid;\n"); 143 f_print(fout, "\tint i;\n"); 144 if (pmflag) { 145 if (tirpc_socket) { 146 f_print(fout, "\tstruct sockaddr_storage saddr;\n"); 147 f_print(fout, "\tsocklen_t asize = sizeof (saddr);\n\n"); 148 } else 149 f_print(fout, "\tchar mname[FMNAMESZ + 1];\n\n"); 150 } 151 152 if (mtflag & timerflag) 153 f_print(fout, "\tmutex_init(&_svcstate_lock, " 154 "USYNC_THREAD, NULL);\n"); 155 if (pmflag) { 156 write_pm_most(infile, netflag); 157 f_print(fout, "\telse {\n"); 158 write_rpc_svc_fg(infile, "\t\t"); 159 f_print(fout, "\t}\n"); 160 } else 161 write_rpc_svc_fg(infile, "\t\t"); 162 163 } else { 164 f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP); 165 f_print(fout, "\n"); 166 print_pmapunset("\t"); 167 } 168 } 169 170 if (logflag && !inetdflag) 171 open_log_file(infile, "\t"); 172 } 173 174 /* 175 * write a registration for the given transport 176 */ 177 void 178 write_netid_register(const char *transp) 179 { 180 list *l; 181 definition *def; 182 version_list *vp; 183 const char *sp; 184 char tmpbuf[32]; 185 186 sp = ""; 187 f_print(fout, "\n"); 188 f_print(fout, "%s\tnconf = getnetconfigent(\"%s\");\n", sp, transp); 189 f_print(fout, "%s\tif (nconf == NULL) {\n", sp); 190 sprintf(_errbuf, "cannot find %s netid.", transp); 191 sprintf(tmpbuf, "%s\t\t", sp); 192 print_err_message(tmpbuf); 193 f_print(fout, "%s\t\texit(1);\n", sp); 194 f_print(fout, "%s\t}\n", sp); 195 if (tirpcflag) { 196 f_print(fout, "%s\t%s = svc_tli_create(RPC_ANYFD, ", 197 sp, TRANSP); 198 f_print(fout,"nconf, 0, RPC_MAXDATASIZE, RPC_MAXDATASIZE);\n"); 199 } else { 200 f_print(fout, 201 "%s\t%s = svc_tli_create(RPC_ANYFD, nconf, 0, 0, 0);\n", 202 sp, TRANSP); 203 } 204 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 205 sprintf(_errbuf, "cannot create %s service.", transp); 206 print_err_message(tmpbuf); 207 f_print(fout, "%s\t\texit(1);\n", sp); 208 f_print(fout, "%s\t}\n", sp); 209 210 for (l = defined; l != NULL; l = l->next) { 211 def = (definition *) l->val; 212 if (def->def_kind != DEF_PROGRAM) 213 continue; 214 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 215 f_print(fout, "%s\trpcb_unset(%s, %s, nconf);\n", 216 sp, def->def_name, vp->vers_name); 217 f_print(fout, "%s\tif (!svc_reg(%s, %s, %s, ", 218 sp, TRANSP, def->def_name, vp->vers_name); 219 pvname(def->def_name, vp->vers_num); 220 f_print(fout, ", nconf)) {\n"); 221 sprintf(_errbuf, "unable to register (%s, %s, %s).", 222 def->def_name, vp->vers_name, transp); 223 print_err_message(tmpbuf); 224 f_print(fout, "%s\t\texit(1);\n", sp); 225 f_print(fout, "%s\t}\n", sp); 226 } 227 } 228 f_print(fout, "%s\tfreenetconfigent(nconf);\n", sp); 229 } 230 231 /* 232 * write a registration for the given transport for TLI 233 */ 234 void 235 write_nettype_register(const char *transp) 236 { 237 list *l; 238 definition *def; 239 version_list *vp; 240 241 for (l = defined; l != NULL; l = l->next) { 242 def = (definition *) l->val; 243 if (def->def_kind != DEF_PROGRAM) 244 continue; 245 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 246 f_print(fout, "\tif (!svc_create("); 247 pvname(def->def_name, vp->vers_num); 248 f_print(fout, ", %s, %s, \"%s\")) {\n", 249 def->def_name, vp->vers_name, transp); 250 sprintf(_errbuf, "unable to create (%s, %s) for %s.", 251 def->def_name, vp->vers_name, transp); 252 print_err_message("\t\t"); 253 f_print(fout, "\t\texit(1);\n"); 254 f_print(fout, "\t}\n"); 255 } 256 } 257 } 258 259 /* 260 * write the rest of the service 261 */ 262 void 263 write_rest(void) 264 { 265 f_print(fout, "\n"); 266 if (inetdflag) { 267 f_print(fout, "\tif (%s == NULL) {\n", TRANSP); 268 sprintf(_errbuf, "could not create a handle"); 269 print_err_message("\t\t"); 270 f_print(fout, "\t\texit(1);\n"); 271 f_print(fout, "\t}\n"); 272 if (timerflag) { 273 f_print(fout, "\tif (_rpcpmstart) {\n"); 274 f_print(fout, 275 "\t\tsignal(SIGALRM, closedown);\n"); 276 f_print(fout, "\t\talarm(_RPCSVC_CLOSEDOWN/2);\n"); 277 f_print(fout, "\t}\n"); 278 } 279 } 280 f_print(fout, "\tsvc_run();\n"); 281 sprintf(_errbuf, "svc_run returned"); 282 print_err_message("\t"); 283 f_print(fout, "\texit(1);\n"); 284 f_print(fout, "\t/* NOTREACHED */\n"); 285 f_print(fout, "}\n"); 286 } 287 288 void 289 write_programs(const char *storage) 290 { 291 list *l; 292 definition *def; 293 294 /* write out stubs for procedure definitions */ 295 for (l = defined; l != NULL; l = l->next) { 296 def = (definition *) l->val; 297 if (def->def_kind == DEF_PROGRAM) 298 write_real_program(def); 299 } 300 301 /* write out dispatcher for each program */ 302 for (l = defined; l != NULL; l = l->next) { 303 def = (definition *) l->val; 304 if (def->def_kind == DEF_PROGRAM) 305 write_program(def, storage); 306 } 307 } 308 309 /* 310 * write out definition of internal function (e.g. _printmsg_1(...)) 311 * which calls server's defintion of actual function (e.g. printmsg_1(...)). 312 * Unpacks single user argument of printmsg_1 to call-by-value format 313 * expected by printmsg_1. 314 */ 315 static void 316 write_real_program(definition *def) 317 { 318 version_list *vp; 319 proc_list *proc; 320 decl_list *l; 321 322 if (!newstyle) 323 return; /* not needed for old style */ 324 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 325 for (proc = vp->procs; proc != NULL; proc = proc->next) { 326 f_print(fout, "\n"); 327 if (!mtflag) 328 internal_proctype(proc); 329 else 330 f_print(fout, "int"); 331 f_print(fout, "\n_"); 332 pvname(proc->proc_name, vp->vers_num); 333 f_print(fout, "("); 334 /* arg name */ 335 if (proc->arg_num > 1) 336 f_print(fout, "%s", proc->args.argname); 337 else 338 ptype(proc->args.decls->decl.prefix, 339 proc->args.decls->decl.type, 0); 340 if (mtflag) { 341 f_print(fout, " *argp, void *%s, struct svc_req *%s)\n", 342 RESULT, RQSTP); 343 } 344 else 345 f_print(fout, " *argp, struct svc_req *%s)\n", 346 RQSTP); 347 348 f_print(fout, "{\n"); 349 f_print(fout, "\treturn ("); 350 pvname_svc(proc->proc_name, vp->vers_num); 351 f_print(fout, "("); 352 if (proc->arg_num < 2) { /* single argument */ 353 if (!streq(proc->args.decls->decl.type, "void")) 354 f_print(fout, "*argp, "); /* non-void */ 355 } else { 356 for (l = proc->args.decls; l != NULL; 357 l = l->next) 358 f_print(fout, "argp->%s, ", 359 l->decl.name); 360 } 361 if (mtflag) 362 f_print(fout, "%s, ",RESULT); 363 f_print(fout, "%s));\n}\n", RQSTP); 364 } 365 } 366 } 367 368 static void 369 write_program(definition *def, const char *storage) 370 { 371 version_list *vp; 372 proc_list *proc; 373 int filled; 374 375 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 376 f_print(fout, "\n"); 377 if (storage != NULL) 378 f_print(fout, "%s ", storage); 379 f_print(fout, "void\n"); 380 pvname(def->def_name, vp->vers_num); 381 382 f_print(fout, "(struct svc_req *%s, ", RQSTP); 383 f_print(fout, "SVCXPRT *%s)\n", TRANSP); 384 f_print(fout, "{\n"); 385 386 filled = 0; 387 f_print(fout, "\tunion {\n"); 388 for (proc = vp->procs; proc != NULL; proc = proc->next) { 389 if (proc->arg_num < 2) { /* single argument */ 390 if (streq(proc->args.decls->decl.type, "void")) 391 continue; 392 filled = 1; 393 f_print(fout, "\t\t"); 394 ptype(proc->args.decls->decl.prefix, 395 proc->args.decls->decl.type, 0); 396 pvname(proc->proc_name, vp->vers_num); 397 f_print(fout, "_arg;\n"); 398 399 } else { 400 filled = 1; 401 f_print(fout, "\t\t%s", proc->args.argname); 402 f_print(fout, " "); 403 pvname(proc->proc_name, vp->vers_num); 404 f_print(fout, "_arg;\n"); 405 } 406 } 407 if (!filled) 408 f_print(fout, "\t\tint fill;\n"); 409 f_print(fout, "\t} %s;\n", ARG); 410 411 if (mtflag) { 412 f_print(fout, "\tunion {\n"); 413 for (proc = vp->procs; proc != NULL; proc = proc->next) { 414 if (streq(proc->res_type, "void")) 415 continue; 416 f_print(fout, "\t\t"); 417 ptype(proc->res_prefix, proc->res_type, 0); 418 pvname(proc->proc_name, vp->vers_num); 419 f_print(fout, "_res;\n"); 420 } 421 f_print(fout, "\t} %s;\n", RESULT); 422 f_print(fout, "\tbool_t %s;\n", RETVAL); 423 424 } else { 425 f_print(fout, "\tchar *%s;\n", RESULT); 426 } 427 428 f_print(fout, "\txdrproc_t xdr_%s, xdr_%s;\n", ARG, RESULT); 429 if (mtflag) 430 f_print(fout, 431 "\tbool_t (*%s)(char *, void *, struct svc_req *);\n", 432 ROUTINE); 433 else 434 f_print(fout, 435 "\tchar *(*%s)(char *, struct svc_req *);\n", 436 ROUTINE); 437 f_print(fout, "\n"); 438 439 if (timerflag) { 440 if (mtflag) 441 f_print(fout, "\tpthread_mutex_lock(&_svcstate_lock);\n"); 442 443 f_print(fout, "\t_rpcsvcstate = _SERVING;\n"); 444 if (mtflag) 445 f_print(fout, "\tpthread_mutex_unlock(&_svcstate_lock);\n"); 446 } 447 448 f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP); 449 if (!nullproc(vp->procs)) { 450 f_print(fout, "\tcase NULLPROC:\n"); 451 f_print(fout, 452 "\t\tsvc_sendreply(%s,\n\t\t\t" 453 "(xdrproc_t) xdr_void, NULL);\n", 454 TRANSP); 455 print_return("\t\t"); 456 f_print(fout, "\n"); 457 } 458 for (proc = vp->procs; proc != NULL; proc = proc->next) { 459 f_print(fout, "\tcase %s:\n", proc->proc_name); 460 if (proc->arg_num < 2) { 461 /* single argument */ 462 p_xdrfunc(ARG, proc->args.decls->decl.type); 463 } else { 464 p_xdrfunc(ARG, proc->args.argname); 465 } 466 p_xdrfunc(RESULT, proc->res_type); 467 468 if (mtflag) 469 f_print(fout, 470 "\t\t%s = (bool_t (*) (char *, void *, struct svc_req *))", 471 ROUTINE); 472 else 473 f_print(fout, 474 "\t\t%s = (char *(*)(char *, struct svc_req *)) ", 475 ROUTINE); 476 if (newstyle) { /* new style: calls internal routine */ 477 f_print(fout, "_"); 478 } 479 if (!newstyle) 480 pvname_svc(proc->proc_name, vp->vers_num); 481 else 482 pvname(proc->proc_name, vp->vers_num); 483 f_print(fout, ";\n"); 484 f_print(fout, "\t\tbreak;\n\n"); 485 } 486 f_print(fout, "\tdefault:\n"); 487 printerr("noproc", TRANSP); 488 print_return("\t\t"); 489 f_print(fout, "\t}\n"); 490 491 f_print(fout, "\tmemset((char *)&%s, 0, sizeof (%s));\n", 492 ARG, ARG); 493 printif("getargs", TRANSP, "(caddr_t) &", ARG); 494 printerr("decode", TRANSP); 495 print_return("\t\t"); 496 f_print(fout, "\t}\n"); 497 498 if (!mtflag) 499 f_print(fout, "\t%s = (*%s)((char *)&%s, %s);\n", 500 RESULT, ROUTINE, ARG, RQSTP); 501 else 502 f_print(fout, "\t%s = (bool_t) (*%s)((char *)&%s, (void *)&%s, %s);\n", 503 RETVAL, ROUTINE, ARG, RESULT, RQSTP); 504 505 506 if (mtflag) 507 f_print(fout, 508 "\tif (%s > 0 && !svc_sendreply(%s, xdr_%s, (char *)&%s)) {\n", 509 RETVAL, TRANSP, RESULT, RESULT); 510 else 511 f_print(fout, 512 "\tif (%s != NULL && !svc_sendreply(%s, xdr_%s, %s)) {\n", 513 RESULT, TRANSP, RESULT, RESULT); 514 515 printerr("systemerr", TRANSP); 516 f_print(fout, "\t}\n"); 517 518 printif("freeargs", TRANSP, "(caddr_t) &", ARG); 519 sprintf(_errbuf, "unable to free arguments"); 520 print_err_message("\t\t"); 521 f_print(fout, "\t\texit(1);\n"); 522 f_print(fout, "\t}\n"); 523 /* print out free routine */ 524 if (mtflag) { 525 f_print(fout,"\tif (!"); 526 pvname(def->def_name, vp->vers_num); 527 f_print(fout,"_freeresult(%s, xdr_%s, (caddr_t) &%s))\n", 528 TRANSP, RESULT, RESULT); 529 sprintf(_errbuf, "unable to free results"); 530 print_err_message("\t\t"); 531 f_print(fout, "\n"); 532 } 533 print_return("\t"); 534 f_print(fout, "}\n"); 535 } 536 } 537 538 static void 539 printerr(const char *err, const char *transp) 540 { 541 f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp); 542 } 543 544 static void 545 printif(const char *proc, const char *transp, const char *prefix, 546 const char *arg) 547 { 548 f_print(fout, "\tif (!svc_%s(%s, xdr_%s, (char *)%s%s)) {\n", 549 proc, transp, arg, prefix, arg); 550 } 551 552 int 553 nullproc(proc_list *proc) 554 { 555 for (; proc != NULL; proc = proc->next) { 556 if (streq(proc->proc_num, "0")) 557 return(1); 558 } 559 return(0); 560 } 561 562 static void 563 write_inetmost(const char *infile) 564 { 565 f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP); 566 f_print(fout, "\tint sock;\n"); 567 f_print(fout, "\tint proto;\n"); 568 f_print(fout, "\tstruct sockaddr_in saddr;\n"); 569 f_print(fout, "\tsocklen_t asize = sizeof (saddr);\n"); 570 f_print(fout, "\n"); 571 f_print(fout, "\tif (getsockname(0, " 572 "(struct sockaddr *)&saddr, &asize) == 0) {\n"); 573 f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n\n"); 574 f_print(fout, "\t\tif (saddr.sin_family != AF_INET)\n"); 575 f_print(fout, "\t\t\texit(1);\n"); 576 f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n"); 577 f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n"); 578 f_print(fout, "\t\t\texit(1);\n"); 579 f_print(fout, "\t\tsock = 0;\n"); 580 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 581 f_print(fout, "\t\tproto = 0;\n"); 582 open_log_file(infile, "\t\t"); 583 f_print(fout, "\t} else {\n"); 584 write_rpc_svc_fg(infile, "\t\t"); 585 f_print(fout, "\t\tsock = RPC_ANYSOCK;\n"); 586 print_pmapunset("\t\t"); 587 f_print(fout, "\t}\n"); 588 } 589 590 static void 591 print_return(const char *space) 592 { 593 if (exitnow) 594 f_print(fout, "%sexit(0);\n", space); 595 else { 596 if (timerflag) { 597 if (mtflag) 598 f_print(fout, "%spthread_mutex_lock(&_svcstate_lock);\n", space); 599 f_print(fout, "%s_rpcsvcstate = _SERVED;\n", space); 600 if (mtflag) 601 f_print(fout, "%spthread_mutex_unlock(&_svcstate_lock);\n", space); 602 } 603 f_print(fout, "%sreturn;\n", space); 604 } 605 } 606 607 static void 608 print_pmapunset(const char *space) 609 { 610 list *l; 611 definition *def; 612 version_list *vp; 613 614 for (l = defined; l != NULL; l = l->next) { 615 def = (definition *) l->val; 616 if (def->def_kind == DEF_PROGRAM) { 617 for (vp = def->def.pr.versions; vp != NULL; 618 vp = vp->next) { 619 f_print(fout, "%spmap_unset(%s, %s);\n", 620 space, def->def_name, vp->vers_name); 621 } 622 } 623 } 624 } 625 626 static void 627 print_err_message(const char *space) 628 { 629 if (logflag) 630 f_print(fout, "%ssyslog(LOG_ERR, \"%s\");\n", space, _errbuf); 631 else if (inetdflag || pmflag) 632 f_print(fout, "%s_msgout(\"%s\");\n", space, _errbuf); 633 else 634 f_print(fout, "%sfprintf(stderr, \"%s\");\n", space, _errbuf); 635 } 636 637 /* 638 * Write the server auxiliary function (_msgout, timeout) 639 */ 640 void 641 write_svc_aux(int nomain) 642 { 643 if (!logflag) 644 write_msg_out(); 645 if (!nomain) 646 write_timeout_func(); 647 } 648 649 /* 650 * Write the _msgout function 651 */ 652 653 static void 654 write_msg_out(void) 655 { 656 f_print(fout, "\n"); 657 /* 658 * Avoid making _msgout() static -- it's useful to have it visible 659 * in the toplevel RPC server code. 660 */ 661 f_print(fout, "static\n"); 662 f_print(fout, "void _msgout(const char* msg)\n"); 663 f_print(fout, "{\n"); 664 f_print(fout, "#ifdef RPC_SVC_FG\n"); 665 if (inetdflag || pmflag) 666 f_print(fout, "\tif (_rpcpmstart)\n"); 667 f_print(fout, "\t\tsyslog(LOG_ERR, \"%%s\", msg);\n"); 668 f_print(fout, "\telse\n"); 669 f_print(fout, 670 "\t\tfprintf(stderr, \"%%s\\n\", msg);\n"); 671 f_print(fout, "#else\n"); 672 f_print(fout, "\tsyslog(LOG_ERR, \"%%s\", msg);\n"); 673 f_print(fout, "#endif\n"); 674 f_print(fout, "}\n"); 675 } 676 677 /* 678 * Write the timeout function 679 */ 680 static void 681 write_timeout_func(void) 682 { 683 if (!timerflag) 684 return; 685 686 f_print(fout, "\n"); 687 f_print(fout, "static void\n"); 688 f_print(fout, "closedown(int sig)\n"); 689 f_print(fout, "{\n"); 690 if (mtflag) 691 f_print(fout, "\tpthread_mutex_lock(&_svcstate_lock);\n"); 692 f_print(fout, "\tif (_rpcsvcstate == _IDLE) {\n"); 693 f_print(fout, "\t\textern fd_set svc_fdset;\n"); 694 f_print(fout, "\t\tstatic int size;\n"); 695 f_print(fout, "\t\tint i, openfd;\n"); 696 if (tirpcflag && pmflag) { 697 f_print(fout, "\t\tstruct t_info tinfo;\n\n"); 698 f_print(fout, 699 "\t\tif (!t_getinfo(0, &tinfo) && (tinfo.servtype == T_CLTS))\n"); 700 } else { 701 f_print(fout, "\n\t\tif (_rpcfdtype == SOCK_DGRAM)\n"); 702 } 703 f_print(fout, "\t\t\texit(0);\n"); 704 f_print(fout, "\t\tif (size == 0) {\n"); 705 if (tirpcflag) { 706 f_print(fout, "\t\t\tstruct rlimit rl;\n\n"); 707 f_print(fout, "\t\t\trl.rlim_max = 0;\n"); 708 f_print(fout, "\t\t\tgetrlimit(RLIMIT_NOFILE, &rl);\n"); 709 f_print(fout, "\t\t\tif ((size = rl.rlim_max) == 0) {\n"); 710 711 if (mtflag) 712 f_print(fout, "\t\t\t\tpthread_mutex_unlock(&_svcstate_lock);\n"); 713 714 f_print(fout, "\t\t\t\treturn;\n\t\t\t}\n"); 715 } else { 716 f_print(fout, "\t\t\tsize = getdtablesize();\n"); 717 } 718 f_print(fout, "\t\t}\n"); 719 f_print(fout, 720 "\t\tfor (i = 0, openfd = 0; i < size && openfd < 2; i++)\n"); 721 f_print(fout, "\t\t\tif (FD_ISSET(i, &svc_fdset))\n"); 722 f_print(fout, "\t\t\t\topenfd++;\n"); 723 f_print(fout, "\t\tif (openfd <= 1)\n"); 724 f_print(fout, "\t\t\texit(0);\n"); 725 f_print(fout, "\t}\n"); 726 f_print(fout, "\tif (_rpcsvcstate == _SERVED)\n"); 727 f_print(fout, "\t\t_rpcsvcstate = _IDLE;\n\n"); 728 if (mtflag) 729 f_print(fout, "\tpthread_mutex_unlock(&_svcstate_lock);\n"); 730 731 f_print(fout, "\tsignal(SIGALRM, closedown);\n"); 732 f_print(fout, "\talarm(_RPCSVC_CLOSEDOWN/2);\n"); 733 f_print(fout, "}\n"); 734 735 } 736 737 /* 738 * Write the most of port monitor support 739 */ 740 static void 741 write_pm_most(const char *infile, int netflag) 742 { 743 list *l; 744 definition *def; 745 version_list *vp; 746 747 if (tirpc_socket) { 748 f_print(fout, 749 "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n"); 750 f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n"); 751 } else { 752 f_print(fout, "\tif (!ioctl(0, I_LOOK, mname) &&\n"); 753 f_print(fout, "\t\t(!strcmp(mname, \"sockmod\") ||"); 754 f_print(fout, " !strcmp(mname, \"timod\"))) {\n"); 755 } 756 f_print(fout, "\t\tchar *netid;\n"); 757 if (!netflag) { /* Not included by -n option */ 758 f_print(fout, "\t\tstruct netconfig *nconf = NULL;\n"); 759 f_print(fout, "\t\tSVCXPRT *%s;\n", TRANSP); 760 } 761 if (timerflag) 762 f_print(fout, "\t\tint pmclose;\n"); 763 /* 764 * Not necessary, defined in /usr/include/stdlib 765 * f_print(fout, "\t\textern char *getenv();\n"); 766 */ 767 f_print(fout, "\n"); 768 if (tirpc_socket) { 769 f_print(fout, "\t\tif (saddr.ss_family != AF_INET &&\n"); 770 f_print(fout, "\t\t saddr.ss_family != AF_INET6)\n"); 771 f_print(fout, "\t\t\texit(1);\n"); 772 f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n"); 773 f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n"); 774 f_print(fout, "\t\t\texit(1);\n"); 775 } 776 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 777 open_log_file(infile, "\t\t"); 778 f_print(fout, "\n\t\tif ((netid = \ 779 getenv(\"NLSPROVIDER\")) == NULL) {\n"); 780 781 if (timerflag) { 782 f_print(fout, "\t\t/* started from inetd */\n"); 783 f_print(fout, "\t\t\tpmclose = 1;\n"); 784 } 785 f_print(fout, 786 "\t\t} else {\n"); 787 f_print(fout, "\t\t\tif ((nconf = getnetconfigent(netid)) == NULL)\n"); 788 sprintf(_errbuf, "cannot get transport info"); 789 print_err_message("\t\t\t\t"); 790 if (timerflag) { 791 if (tirpc_socket) 792 f_print(fout, "\n\t\t\tpmclose = 1;\t/* XXX */\n"); 793 else 794 f_print(fout, 795 "\n\t\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n"); 796 } 797 f_print(fout, "\t\t}\n"); 798 /* 799 * A kludgy support for inetd services. Inetd only works with 800 * sockmod, and RPC works only with timod, hence all this jugglery 801 */ 802 if (!tirpc_socket) { 803 f_print(fout, "\t\tif (strcmp(mname, \"sockmod\") == 0) {\n"); 804 f_print(fout, "\t\t\tif (ioctl(0, I_POP, 0) || "); 805 f_print(fout, "ioctl(0, I_PUSH, \"timod\")) {\n"); 806 sprintf(_errbuf, "could not get the right module"); 807 print_err_message("\t\t\t\t"); 808 f_print(fout, "\t\t\t\texit(1);\n"); 809 f_print(fout, "\t\t\t}\n"); 810 f_print(fout, "\t\t}\n"); 811 } 812 if (tirpcflag) { 813 f_print(fout, 814 "\t\tif ((%s = svc_tli_create(0, nconf, NULL, \ 815 RPC_MAXDATASIZE, RPC_MAXDATASIZE)) \ 816 == NULL) {\n", 817 TRANSP); 818 } else { 819 f_print(fout, 820 "\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) \ 821 == NULL) {\n", 822 TRANSP); 823 } 824 sprintf(_errbuf, "cannot create server handle"); 825 print_err_message("\t\t\t"); 826 f_print(fout, "\t\t\texit(1);\n"); 827 f_print(fout, "\t\t}\n"); 828 f_print(fout, "\t\tif (nconf)\n"); 829 f_print(fout, "\t\t\tfreenetconfigent(nconf);\n"); 830 for (l = defined; l != NULL; l = l->next) { 831 def = (definition *) l->val; 832 if (def->def_kind != DEF_PROGRAM) 833 continue; 834 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 835 f_print(fout, "\t\tif (!svc_reg(%s, %s, %s, ", 836 TRANSP, def->def_name, vp->vers_name); 837 pvname(def->def_name, vp->vers_num); 838 f_print(fout, ", 0)) {\n"); 839 sprintf(_errbuf, "unable to register (%s, %s).", 840 def->def_name, vp->vers_name); 841 print_err_message("\t\t\t"); 842 f_print(fout, "\t\t\texit(1);\n"); 843 f_print(fout, "\t\t}\n"); 844 } 845 } 846 if (timerflag) { 847 f_print(fout, "\t\tif (pmclose) {\n"); 848 f_print(fout, "\t\t\tsignal(SIGALRM, closedown);\n"); 849 f_print(fout, "\t\t\talarm(_RPCSVC_CLOSEDOWN/2);\n"); 850 f_print(fout, "\t\t}\n"); 851 } 852 f_print(fout, "\t\tsvc_run();\n"); 853 f_print(fout, "\t\texit(1);\n"); 854 f_print(fout, "\t\t/* NOTREACHED */\n"); 855 f_print(fout, "\t}"); 856 } 857 858 /* 859 * Support for backgrounding the server if self started. 860 */ 861 static void 862 write_rpc_svc_fg(const char *infile, const char *sp) 863 { 864 f_print(fout, "#ifndef RPC_SVC_FG\n"); 865 f_print(fout, "%sint size;\n", sp); 866 if (tirpcflag) 867 f_print(fout, "%sstruct rlimit rl;\n", sp); 868 if (inetdflag) 869 f_print(fout, "%sint pid, i;\n\n", sp); 870 f_print(fout, "%spid = fork();\n", sp); 871 f_print(fout, "%sif (pid < 0) {\n", sp); 872 f_print(fout, "%s\tperror(\"cannot fork\");\n", sp); 873 f_print(fout, "%s\texit(1);\n", sp); 874 f_print(fout, "%s}\n", sp); 875 f_print(fout, "%sif (pid)\n", sp); 876 f_print(fout, "%s\texit(0);\n", sp); 877 /* get number of file descriptors */ 878 if (tirpcflag) { 879 f_print(fout, "%srl.rlim_max = 0;\n", sp); 880 f_print(fout, "%sgetrlimit(RLIMIT_NOFILE, &rl);\n", sp); 881 f_print(fout, "%sif ((size = rl.rlim_max) == 0)\n", sp); 882 f_print(fout, "%s\texit(1);\n", sp); 883 } else { 884 f_print(fout, "%ssize = getdtablesize();\n", sp); 885 } 886 887 f_print(fout, "%sfor (i = 0; i < size; i++)\n", sp); 888 f_print(fout, "%s\tclose(i);\n", sp); 889 /* Redirect stderr and stdout to console */ 890 f_print(fout, "%si = open(\"/dev/console\", 2);\n", sp); 891 f_print(fout, "%sdup2(i, 1);\n", sp); 892 f_print(fout, "%sdup2(i, 2);\n", sp); 893 /* This removes control of the controlling terminal */ 894 if (tirpcflag) { 895 f_print(fout, "%ssetsid();\n", sp); 896 } else { 897 f_print(fout, "%si = open(\"/dev/tty\", 2);\n", sp); 898 f_print(fout, "%sif (i >= 0) {\n", sp); 899 f_print(fout, 900 "%s\tioctl(i, TIOCNOTTY, NULL);\n", sp); 901 f_print(fout, "%s\tclose(i);\n", sp); 902 f_print(fout, "%s}\n", sp); 903 } 904 if (!logflag) 905 open_log_file(infile, sp); 906 f_print(fout, "#endif\n"); 907 if (logflag) 908 open_log_file(infile, sp); 909 } 910 911 static void 912 open_log_file(const char *infile, const char *sp) 913 { 914 char *s; 915 916 s = strrchr(infile, '.'); 917 if (s) 918 *s = '\0'; 919 f_print(fout, "%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, infile); 920 if (s) 921 *s = '.'; 922 } 923 924 /* 925 * write a registration for the given transport for Inetd 926 */ 927 void 928 write_inetd_register(const char *transp) 929 { 930 list *l; 931 definition *def; 932 version_list *vp; 933 const char *sp; 934 int isudp; 935 char tmpbuf[32]; 936 937 if (inetdflag) 938 sp = "\t"; 939 else 940 sp = ""; 941 if (streq(transp, "udp")) 942 isudp = 1; 943 else 944 isudp = 0; 945 f_print(fout, "\n"); 946 if (inetdflag) { 947 f_print(fout, 948 "\tif ((_rpcfdtype == 0) || (_rpcfdtype == %s)) {\n", 949 isudp ? "SOCK_DGRAM" : "SOCK_STREAM"); 950 } 951 f_print(fout, "%s\t%s = svc%s_create(%s", 952 sp, TRANSP, transp, inetdflag? "sock": "RPC_ANYSOCK"); 953 if (!isudp) 954 f_print(fout, ", 0, 0"); 955 f_print(fout, ");\n"); 956 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 957 sprintf(_errbuf, "cannot create %s service.", transp); 958 sprintf(tmpbuf, "%s\t\t", sp); 959 print_err_message(tmpbuf); 960 f_print(fout, "%s\t\texit(1);\n", sp); 961 f_print(fout, "%s\t}\n", sp); 962 963 if (inetdflag) { 964 f_print(fout, "%s\tif (!_rpcpmstart)\n\t", sp); 965 f_print(fout, "%s\tproto = IPPROTO_%s;\n", sp, 966 isudp ? "UDP": "TCP"); 967 } 968 for (l = defined; l != NULL; l = l->next) { 969 def = (definition *) l->val; 970 if (def->def_kind != DEF_PROGRAM) 971 continue; 972 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 973 f_print(fout, "%s\tif (!svc_register(%s, %s, %s, ", 974 sp, TRANSP, def->def_name, vp->vers_name); 975 pvname(def->def_name, vp->vers_num); 976 if (inetdflag) 977 f_print(fout, ", proto)) {\n"); 978 else 979 f_print(fout, ", IPPROTO_%s)) {\n", 980 isudp ? "UDP": "TCP"); 981 sprintf(_errbuf, "unable to register (%s, %s, %s).", 982 def->def_name, vp->vers_name, transp); 983 print_err_message(tmpbuf); 984 f_print(fout, "%s\t\texit(1);\n", sp); 985 f_print(fout, "%s\t}\n", sp); 986 } 987 } 988 if (inetdflag) 989 f_print(fout, "\t}\n"); 990 } 991