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/* 31 * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler 32 * Copyright (C) 1987, Sun Microsystems, Inc. 33 */ 34#include <stdio.h> 35#include <string.h> 36#include "rpc_parse.h" 37#include "rpc_scan.h" 38#include "rpc_util.h" 39 40static char RQSTP[] = "rqstp"; 41static char TRANSP[] = "transp"; 42static char ARG[] = "argument"; 43static char RESULT[] = "result"; 44static char ROUTINE[] = "local"; 45static char RETVAL[] = "retval"; 46 47static char _errbuf[256]; /* For all messages */ 48 49void internal_proctype( proc_list * ); 50static void write_real_program( definition * ); 51static void write_program(definition *, const char *); 52static void printerr(const char *, const char *); 53static void printif(const char *, const char *, const char *, const char *); 54static void write_inetmost(const char *); 55static void print_return(const char *); 56static void print_pmapunset(const char *); 57static void print_err_message(const char *); 58static void write_timeout_func( void ); 59static void write_pm_most(const char *, int); 60static void write_rpc_svc_fg(const char *, const char *); 61static void open_log_file(const char *, const char *); 62static void write_msg_out( void ); 63 64 65static void 66p_xdrfunc(const char *rname, const char *typename) 67{ 68 f_print(fout, "\t\txdr_%s = (xdrproc_t) xdr_%s;\n", 69 rname, stringfix(typename)); 70} 71 72void 73internal_proctype(proc_list *plist) 74{ 75 f_print(fout, "static "); 76 ptype(plist->res_prefix, plist->res_type, 1); 77 f_print(fout, "*"); 78} 79 80 81/* 82 * write most of the service, that is, everything but the registrations. 83 */ 84void 85write_most(const char *infile, int netflag, int nomain) 86{ 87 if (inetdflag || pmflag) { 88 const char *var_type; 89 var_type = (nomain? "extern" : "static"); 90 f_print(fout, "%s int _rpcpmstart;", var_type); 91 f_print(fout, "\t\t/* Started by a port monitor ? */\n"); 92 if (!tirpcflag || tirpc_socket) { 93 f_print(fout, "%s int _rpcfdtype;", var_type); 94 f_print(fout, "\n\t\t /* Whether Stream or \ 95Datagram ? */\n"); 96 } 97 98 if (timerflag) { 99 f_print(fout, " /* States a server can be in \ 100wrt request */\n\n"); 101 f_print(fout, "#define\t_IDLE 0\n"); 102 f_print(fout, "#define\t_SERVED 1\n"); 103 f_print(fout, "#define\t_SERVING 2\n\n"); 104 f_print(fout, "static int _rpcsvcstate = _IDLE;"); 105 f_print(fout, "\t /* Set when a request is \ 106serviced */\n"); 107 108 if (mtflag) { 109 f_print(fout, "pthread_mutex_t _svcstate_lock;"); 110 f_print(fout, "\t\t\t/* Mutex lock for variable _rpcsvcstate */\n"); 111 112 } 113 114 } 115 116 write_svc_aux(nomain); 117 } 118 /* write out dispatcher and stubs */ 119 write_programs((char *)NULL); 120 121 if (nomain) 122 return; 123 124 f_print(fout, "\nint\n"); 125 f_print(fout, "main()\n"); 126 f_print(fout, "{\n"); 127 if (inetdflag) { 128 write_inetmost(infile); 129 /* Includes call to write_rpc_svc_fg() */ 130 } else { 131 if (tirpcflag) { 132 if (netflag) { 133 f_print(fout, 134 "\tregister SVCXPRT *%s;\n", TRANSP); 135 f_print(fout, 136 "\tstruct netconfig *nconf = NULL;\n"); 137 } 138 f_print(fout, "\tpid_t pid;\n"); 139 f_print(fout, "\tint i;\n"); 140 if (pmflag) { 141 if (tirpc_socket) { 142 f_print(fout, "\tstruct sockaddr_storage saddr;\n"); 143 f_print(fout, "\tsocklen_t asize = sizeof (saddr);\n\n"); 144 } else 145 f_print(fout, "\tchar mname[FMNAMESZ + 1];\n\n"); 146 } 147 148 if (mtflag & timerflag) 149 f_print(fout, "\tmutex_init(&_svcstate_lock, USYNC_THREAD, NULL);\n"); 150 if (pmflag) { 151 write_pm_most(infile, netflag); 152 f_print(fout, "\telse {\n"); 153 write_rpc_svc_fg(infile, "\t\t"); 154 f_print(fout, "\t}\n"); 155 } else 156 write_rpc_svc_fg(infile, "\t\t"); 157 158 } else { 159 f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP); 160 f_print(fout, "\n"); 161 print_pmapunset("\t"); 162 } 163 } 164 165 if (logflag && !inetdflag) { 166 open_log_file(infile, "\t"); 167 } 168} 169 170/* 171 * write a registration for the given transport 172 */ 173void 174write_netid_register(const char *transp) 175{ 176 list *l; 177 definition *def; 178 version_list *vp; 179 const char *sp; 180 char tmpbuf[32]; 181 182 sp = ""; 183 f_print(fout, "\n"); 184 f_print(fout, "%s\tnconf = getnetconfigent(\"%s\");\n", sp, transp); 185 f_print(fout, "%s\tif (nconf == NULL) {\n", sp); 186 (void) sprintf(_errbuf, "cannot find %s netid.", transp); 187 sprintf(tmpbuf, "%s\t\t", sp); 188 print_err_message(tmpbuf); 189 f_print(fout, "%s\t\texit(1);\n", sp); 190 f_print(fout, "%s\t}\n", sp); 191 if (tirpcflag) { 192 f_print(fout, "%s\t%s = svc_tli_create(RPC_ANYFD, ", 193 sp, TRANSP); 194 f_print(fout,"nconf, 0, RPC_MAXDATASIZE, RPC_MAXDATASIZE);\n"); 195 } else { 196 f_print(fout, 197 "%s\t%s = svc_tli_create(RPC_ANYFD, nconf, 0, 0, 0);\n", 198 sp, TRANSP); 199 } 200 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 201 (void) sprintf(_errbuf, "cannot create %s service.", transp); 202 print_err_message(tmpbuf); 203 f_print(fout, "%s\t\texit(1);\n", sp); 204 f_print(fout, "%s\t}\n", sp); 205 206 for (l = defined; l != NULL; l = l->next) { 207 def = (definition *) l->val; 208 if (def->def_kind != DEF_PROGRAM) { 209 continue; 210 } 211 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 212 f_print(fout, 213 "%s\t(void) rpcb_unset(%s, %s, nconf);\n", 214 sp, def->def_name, vp->vers_name); 215 f_print(fout, 216 "%s\tif (!svc_reg(%s, %s, %s, ", 217 sp, TRANSP, def->def_name, vp->vers_name); 218 pvname(def->def_name, vp->vers_num); 219 f_print(fout, ", nconf)) {\n"); 220 (void) sprintf(_errbuf, 221 "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 */ 234void 235write_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 } 246 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 247 f_print(fout, "\tif (!svc_create("); 248 pvname(def->def_name, vp->vers_num); 249 f_print(fout, ", %s, %s, \"%s\")) {\n", 250 def->def_name, vp->vers_name, transp); 251 (void) sprintf(_errbuf, 252 "unable to create (%s, %s) for %s.", 253 def->def_name, vp->vers_name, transp); 254 print_err_message("\t\t"); 255 f_print(fout, "\t\texit(1);\n"); 256 f_print(fout, "\t}\n"); 257 } 258 } 259} 260 261/* 262 * write the rest of the service 263 */ 264void 265write_rest(void) 266{ 267 f_print(fout, "\n"); 268 if (inetdflag) { 269 f_print(fout, "\tif (%s == (SVCXPRT *)NULL) {\n", TRANSP); 270 (void) sprintf(_errbuf, "could not create a handle"); 271 print_err_message("\t\t"); 272 f_print(fout, "\t\texit(1);\n"); 273 f_print(fout, "\t}\n"); 274 if (timerflag) { 275 f_print(fout, "\tif (_rpcpmstart) {\n"); 276 f_print(fout, 277 "\t\t(void) signal(SIGALRM, closedown);\n"); 278 f_print(fout, "\t\t(void) \ 279alarm(_RPCSVC_CLOSEDOWN/2);\n"); 280 f_print(fout, "\t}\n"); 281 } 282 } 283 f_print(fout, "\tsvc_run();\n"); 284 (void) sprintf(_errbuf, "svc_run returned"); 285 print_err_message("\t"); 286 f_print(fout, "\texit(1);\n"); 287 f_print(fout, "\t/* NOTREACHED */\n"); 288 f_print(fout, "}\n"); 289} 290 291void 292write_programs(const char *storage) 293{ 294 list *l; 295 definition *def; 296 297 /* write out stubs for procedure definitions */ 298 for (l = defined; l != NULL; l = l->next) { 299 def = (definition *) l->val; 300 if (def->def_kind == DEF_PROGRAM) { 301 write_real_program(def); 302 } 303 } 304 305 /* write out dispatcher for each program */ 306 for (l = defined; l != NULL; l = l->next) { 307 def = (definition *) l->val; 308 if (def->def_kind == DEF_PROGRAM) { 309 write_program(def, storage); 310 } 311 } 312 313 314} 315 316/* 317 * write out definition of internal function (e.g. _printmsg_1(...)) 318 * which calls server's definition of actual function (e.g. printmsg_1(...)). 319 * Unpacks single user argument of printmsg_1 to call-by-value format 320 * expected by printmsg_1. 321 */ 322static void 323write_real_program(definition *def) 324{ 325 version_list *vp; 326 proc_list *proc; 327 decl_list *l; 328 329 if (!newstyle) return; /* not needed for old style */ 330 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 331 for (proc = vp->procs; proc != NULL; proc = proc->next) { 332 f_print(fout, "\n"); 333 if (!mtflag) 334 internal_proctype(proc); 335 else 336 f_print(fout, "int"); 337 f_print(fout, "\n_"); 338 pvname(proc->proc_name, vp->vers_num); 339 f_print(fout, "("); 340 /* arg name */ 341 if (proc->arg_num > 1) 342 fputs(proc->args.argname, fout); 343 else 344 ptype(proc->args.decls->decl.prefix, 345 proc->args.decls->decl.type, 0); 346 if (mtflag) { 347 f_print(fout, " *argp, void *%s, struct svc_req *%s)\n", 348 RESULT, RQSTP); 349 350 351 } 352 else 353 f_print(fout, " *argp, struct svc_req *%s)\n", 354 RQSTP); 355 356 f_print(fout, "{\n"); 357 f_print(fout, "\treturn ("); 358 pvname_svc(proc->proc_name, vp->vers_num); 359 f_print(fout, "("); 360 if (proc->arg_num < 2) { /* single argument */ 361 if (!streq(proc->args.decls->decl.type, "void")) 362 f_print(fout, "*argp, "); /* non-void */ 363 } else { 364 for (l = proc->args.decls; l != NULL; 365 l = l->next) 366 f_print(fout, "argp->%s, ", 367 l->decl.name); 368 } 369 if (mtflag) 370 f_print(fout, "%s, ",RESULT); 371 f_print(fout, "%s));\n}\n", RQSTP); 372 } 373 } 374} 375 376static void 377write_program(definition *def, const char *storage) 378{ 379 version_list *vp; 380 proc_list *proc; 381 int filled; 382 383 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 384 f_print(fout, "\n"); 385 if (storage != NULL) { 386 f_print(fout, "%s ", storage); 387 } 388 f_print(fout, "void\n"); 389 pvname(def->def_name, vp->vers_num); 390 391 f_print(fout, "(struct svc_req *%s, ", RQSTP); 392 f_print(fout, "SVCXPRT *%s)\n", TRANSP); 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); 422 423 if (mtflag) { 424 f_print(fout, "\tunion {\n"); 425 for (proc = vp->procs; proc != NULL; proc = proc->next) { 426 if (streq(proc->res_type, "void")) { 427 continue; 428 } 429 f_print(fout, "\t\t"); 430 ptype(proc->res_prefix, proc->res_type, 0); 431 pvname(proc->proc_name, vp->vers_num); 432 f_print(fout, "_res;\n"); 433 } 434 f_print(fout, "\t} %s;\n", RESULT); 435 f_print(fout, "\tbool_t %s;\n", RETVAL); 436 437 } else 438 f_print(fout, "\tchar *%s;\n", RESULT); 439 440 f_print(fout, "\txdrproc_t xdr_%s, xdr_%s;\n", ARG, RESULT); 441 if (mtflag) 442 f_print(fout, 443 "\tbool_t (*%s)(char *, void *, struct svc_req *);\n", 444 ROUTINE); 445 else 446 f_print(fout, 447 "\tchar *(*%s)(char *, struct svc_req *);\n", 448 ROUTINE); 449 f_print(fout, "\n"); 450 451 if (timerflag) { 452 if (mtflag) 453 f_print(fout, "\tpthread_mutex_lock(&_svcstate_lock);\n"); 454 455 f_print(fout, "\t_rpcsvcstate = _SERVING;\n"); 456 if (mtflag) 457 f_print(fout, "\tpthread_mutex_unlock(&_svcstate_lock);\n"); 458 } 459 460 f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP); 461 if (!nullproc(vp->procs)) { 462 f_print(fout, "\tcase NULLPROC:\n"); 463 f_print(fout, 464 "\t\t(void) svc_sendreply(%s,\n\t\t\t" 465 "(xdrproc_t) xdr_void, (char *)NULL);\n", 466 TRANSP); 467 print_return("\t\t"); 468 f_print(fout, "\n"); 469 } 470 for (proc = vp->procs; proc != NULL; proc = proc->next) { 471 f_print(fout, "\tcase %s:\n", proc->proc_name); 472 if (proc->arg_num < 2) { /* single argument */ 473 p_xdrfunc(ARG, proc->args.decls->decl.type); 474 } else { 475 p_xdrfunc(ARG, proc->args.argname); 476 } 477 p_xdrfunc(RESULT, proc->res_type); 478 479 if (mtflag) 480 f_print(fout, 481 "\t\t%s = (bool_t (*) (char *, void *, struct svc_req *))", 482 ROUTINE); 483 else 484 f_print(fout, 485 "\t\t%s = (char *(*)(char *, struct svc_req *)) ", 486 ROUTINE); 487 if (newstyle) { /* new style: calls internal routine */ 488 f_print(fout, "_"); 489 } 490 if (!newstyle) 491 pvname_svc(proc->proc_name, vp->vers_num); 492 else 493 pvname(proc->proc_name, vp->vers_num); 494 f_print(fout, ";\n"); 495 f_print(fout, "\t\tbreak;\n\n"); 496 } 497 f_print(fout, "\tdefault:\n"); 498 printerr("noproc", TRANSP); 499 print_return("\t\t"); 500 f_print(fout, "\t}\n"); 501 502 f_print(fout, 503 "\t(void) memset((char *)&%s, 0, sizeof (%s));\n", 504 ARG, ARG); 505 printif("getargs", TRANSP, "(caddr_t) &", ARG); 506 printerr("decode", TRANSP); 507 print_return("\t\t"); 508 f_print(fout, "\t}\n"); 509 510 if (!mtflag) 511 f_print(fout, "\t%s = (*%s)((char *)&%s, %s);\n", 512 RESULT, ROUTINE, ARG, RQSTP); 513 else 514 f_print(fout, "\t%s = (bool_t) (*%s)((char *)&%s, (void *)&%s, %s);\n", 515 RETVAL, ROUTINE, ARG, RESULT, RQSTP); 516 517 518 if (mtflag) 519 f_print(fout, 520 "\tif (%s > 0 && !svc_sendreply(%s, xdr_%s, (char *)&%s)) {\n", 521 RETVAL, TRANSP, RESULT, RESULT); 522 else 523 f_print(fout, 524 "\tif (%s != NULL && !svc_sendreply(%s, xdr_%s, %s)) {\n", 525 RESULT, TRANSP, RESULT, RESULT); 526 527 printerr("systemerr", TRANSP); 528 f_print(fout, "\t}\n"); 529 530 printif("freeargs", TRANSP, "(caddr_t) &", ARG); 531 (void) sprintf(_errbuf, "unable to free arguments"); 532 print_err_message("\t\t"); 533 f_print(fout, "\t\texit(1);\n"); 534 f_print(fout, "\t}\n"); 535 /* print out free routine */ 536 if (mtflag) { 537 f_print(fout,"\tif (!"); 538 pvname(def->def_name, vp->vers_num); 539 f_print(fout,"_freeresult(%s, xdr_%s, (caddr_t) &%s))\n", 540 TRANSP, RESULT, RESULT); 541 (void) sprintf(_errbuf, "unable to free results"); 542 print_err_message("\t\t"); 543 f_print(fout, "\n"); 544 } 545 print_return("\t"); 546 f_print(fout, "}\n"); 547 } 548} 549 550static void 551printerr(const char *err, const char *transp) 552{ 553 f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp); 554} 555 556static void 557printif(const char *proc, const char *transp, const char *prefix, 558 const char *arg) 559{ 560 f_print(fout, "\tif (!svc_%s(%s, xdr_%s, (char *)%s%s)) {\n", 561 proc, transp, arg, prefix, arg); 562} 563 564int 565nullproc(proc_list *proc) 566{ 567 for (; proc != NULL; proc = proc->next) { 568 if (streq(proc->proc_num, "0")) { 569 return (1); 570 } 571 } 572 return (0); 573} 574 575static void 576write_inetmost(const char *infile) 577{ 578 f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP); 579 f_print(fout, "\tint sock;\n"); 580 f_print(fout, "\tint proto;\n"); 581 f_print(fout, "\tstruct sockaddr_in saddr;\n"); 582 f_print(fout, "\tsocklen_t asize = sizeof (saddr);\n"); 583 f_print(fout, "\n"); 584 f_print(fout, 585 "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n"); 586 f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n\n"); 587 f_print(fout, "\t\tif (saddr.sin_family != AF_INET)\n"); 588 f_print(fout, "\t\t\texit(1);\n"); 589 f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n"); 590 f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n"); 591 f_print(fout, "\t\t\texit(1);\n"); 592 f_print(fout, "\t\tsock = 0;\n"); 593 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 594 f_print(fout, "\t\tproto = 0;\n"); 595 open_log_file(infile, "\t\t"); 596 f_print(fout, "\t} else {\n"); 597 write_rpc_svc_fg(infile, "\t\t"); 598 f_print(fout, "\t\tsock = RPC_ANYSOCK;\n"); 599 print_pmapunset("\t\t"); 600 f_print(fout, "\t}\n"); 601} 602 603static void 604print_return(const char *space) 605{ 606 if (exitnow) 607 f_print(fout, "%sexit(0);\n", space); 608 else { 609 if (timerflag) { 610 if (mtflag) 611 f_print(fout, "%spthread_mutex_lock(&_svcstate_lock);\n", space); 612 f_print(fout, "%s_rpcsvcstate = _SERVED;\n", space); 613 if (mtflag) 614 f_print(fout, "%spthread_mutex_unlock(&_svcstate_lock);\n", space); 615 } 616 f_print(fout, "%sreturn;\n", space); 617 } 618} 619 620static void 621print_pmapunset(const char *space) 622{ 623 list *l; 624 definition *def; 625 version_list *vp; 626 627 for (l = defined; l != NULL; l = l->next) { 628 def = (definition *) l->val; 629 if (def->def_kind == DEF_PROGRAM) { 630 for (vp = def->def.pr.versions; vp != NULL; 631 vp = vp->next) { 632 f_print(fout, "%s(void) pmap_unset(%s, %s);\n", 633 space, def->def_name, vp->vers_name); 634 } 635 } 636 } 637} 638 639static void 640print_err_message(const char *space) 641{ 642 if (logflag) 643 f_print(fout, "%ssyslog(LOG_ERR, \"%s\");\n", space, _errbuf); 644 else if (inetdflag || pmflag) 645 f_print(fout, "%s_msgout(\"%s\");\n", space, _errbuf); 646 else 647 f_print(fout, "%sfprintf(stderr, \"%s\");\n", space, _errbuf); 648} 649 650/* 651 * Write the server auxiliary function (_msgout, timeout) 652 */ 653void 654write_svc_aux(int nomain) 655{ 656 if (!logflag) 657 write_msg_out(); 658 if (!nomain) 659 write_timeout_func(); 660} 661 662/* 663 * Write the _msgout function 664 */ 665 666static void 667write_msg_out(void) 668{ 669 f_print(fout, "\n"); 670/* 671 * Avoid making _msgout() static -- it's useful to have it visible 672 * in the toplevel RPC server code. 673 */ 674 f_print(fout, "static\n"); 675 f_print(fout, "void _msgout(const char* msg)\n"); 676 f_print(fout, "{\n"); 677 f_print(fout, "#ifdef RPC_SVC_FG\n"); 678 if (inetdflag || pmflag) 679 f_print(fout, "\tif (_rpcpmstart)\n"); 680 f_print(fout, "\t\tsyslog(LOG_ERR, \"%%s\", msg);\n"); 681 f_print(fout, "\telse\n"); 682 f_print(fout, 683 "\t\t(void) fprintf(stderr, \"%%s\\n\", msg);\n"); 684 f_print(fout, "#else\n"); 685 f_print(fout, "\tsyslog(LOG_ERR, \"%%s\", msg);\n"); 686 f_print(fout, "#endif\n"); 687 f_print(fout, "}\n"); 688} 689 690/* 691 * Write the timeout function 692 */ 693static void 694write_timeout_func(void) 695{ 696 if (!timerflag) 697 return; 698 699 f_print(fout, "\n"); 700 f_print(fout, "static void\n"); 701 f_print(fout, "closedown(int sig)\n"); 702 f_print(fout, "{\n"); 703 if (mtflag) 704 f_print(fout, "\tpthread_mutex_lock(&_svcstate_lock);\n"); 705 f_print(fout, "\tif (_rpcsvcstate == _IDLE) {\n"); 706 f_print(fout, "\t\textern fd_set svc_fdset;\n"); 707 f_print(fout, "\t\tstatic int size;\n"); 708 f_print(fout, "\t\tint i, openfd;\n"); 709 if (tirpcflag && pmflag) { 710 f_print(fout, "\t\tstruct t_info tinfo;\n\n"); 711 f_print(fout, 712 "\t\tif (!t_getinfo(0, &tinfo) && (tinfo.servtype == T_CLTS))\n"); 713 } else { 714 f_print(fout, "\n\t\tif (_rpcfdtype == SOCK_DGRAM)\n"); 715 } 716 f_print(fout, "\t\t\texit(0);\n"); 717 f_print(fout, "\t\tif (size == 0) {\n"); 718 if (tirpcflag) { 719 f_print(fout, "\t\t\tstruct rlimit rl;\n\n"); 720 f_print(fout, "\t\t\trl.rlim_max = 0;\n"); 721 f_print(fout, "\t\t\tif (getrlimit(RLIMIT_NOFILE, &rl) == -1)\n"); 722 f_print(fout, "\t\t\t\treturn;\n"); 723 f_print(fout, "\t\t\tif ((size = rl.rlim_max) == 0) {\n"); 724 725 if (mtflag) 726 f_print(fout, "\t\t\t\tpthread_mutex_unlock(&_svcstate_lock);\n"); 727 728 f_print(fout, "\t\t\t\treturn;\n\t\t\t}\n"); 729 } else { 730 f_print(fout, "\t\t\tsize = getdtablesize();\n"); 731 } 732 f_print(fout, "\t\t}\n"); 733 f_print(fout, 734 "\t\tfor (i = 0, openfd = 0; i < size && openfd < 2; i++)\n"); 735 f_print(fout, "\t\t\tif (FD_ISSET(i, &svc_fdset))\n"); 736 f_print(fout, "\t\t\t\topenfd++;\n"); 737 f_print(fout, "\t\tif (openfd <= 1)\n"); 738 f_print(fout, "\t\t\texit(0);\n"); 739 f_print(fout, "\t}\n"); 740 f_print(fout, "\tif (_rpcsvcstate == _SERVED)\n"); 741 f_print(fout, "\t\t_rpcsvcstate = _IDLE;\n\n"); 742 if (mtflag) 743 f_print(fout, "\tpthread_mutex_unlock(&_svcstate_lock);\n"); 744 745 f_print(fout, "\t(void) signal(SIGALRM, closedown);\n"); 746 f_print(fout, "\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n"); 747 f_print(fout, "}\n"); 748 749} 750 751/* 752 * Write the most of port monitor support 753 */ 754static void 755write_pm_most(const char *infile, int netflag) 756{ 757 list *l; 758 definition *def; 759 version_list *vp; 760 761 if (tirpc_socket) { 762 f_print(fout, 763 "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n"); 764 f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n"); 765 } else { 766 f_print(fout, "\tif (!ioctl(0, I_LOOK, mname) &&\n"); 767 f_print(fout, "\t\t(!strcmp(mname, \"sockmod\") ||"); 768 f_print(fout, " !strcmp(mname, \"timod\"))) {\n"); 769 } 770 f_print(fout, "\t\tchar *netid;\n"); 771 if (!netflag) { /* Not included by -n option */ 772 f_print(fout, "\t\tstruct netconfig *nconf = NULL;\n"); 773 f_print(fout, "\t\tSVCXPRT *%s;\n", TRANSP); 774 } 775 if (timerflag) 776 f_print(fout, "\t\tint pmclose;\n"); 777/* 778 * Not necessary, defined in /usr/include/stdlib 779 * f_print(fout, "\t\textern char *getenv();\n"); 780 */ 781 f_print(fout, "\n"); 782 if (tirpc_socket) { 783 f_print(fout, "\t\tif (saddr.ss_family != AF_INET &&\n"); 784 f_print(fout, "\t\t saddr.ss_family != AF_INET6)\n"); 785 f_print(fout, "\t\t\texit(1);\n"); 786 f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n"); 787 f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n"); 788 f_print(fout, "\t\t\texit(1);\n"); 789 } 790 f_print(fout, "\t\t_rpcpmstart = 1;\n"); 791 open_log_file(infile, "\t\t"); 792 f_print(fout, "\n\t\tif ((netid = \ 793getenv(\"NLSPROVIDER\")) == NULL) {\n"); 794 795 if (timerflag) { 796 f_print(fout, "\t\t/* started from inetd */\n"); 797 f_print(fout, "\t\t\tpmclose = 1;\n"); 798 } 799 f_print(fout, 800 "\t\t} else {\n"); 801 f_print(fout, "\t\t\tif ((nconf = getnetconfigent(netid)) == NULL)\n"); 802 sprintf(_errbuf, "cannot get transport info"); 803 print_err_message("\t\t\t\t"); 804 if (timerflag) { 805 if (tirpc_socket) 806 f_print(fout, "\n\t\t\tpmclose = 1;\t/* XXX */\n"); 807 else 808 f_print(fout, 809 "\n\t\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n"); 810 } 811 f_print(fout, "\t\t}\n"); 812 /* 813 * A kludgy support for inetd services. Inetd only works with 814 * sockmod, and RPC works only with timod, hence all this jugglery 815 */ 816 if (!tirpc_socket) { 817 f_print(fout, "\t\tif (strcmp(mname, \"sockmod\") == 0) {\n"); 818 f_print(fout, "\t\t\tif (ioctl(0, I_POP, 0) || "); 819 f_print(fout, "ioctl(0, I_PUSH, \"timod\")) {\n"); 820 sprintf(_errbuf, "could not get the right module"); 821 print_err_message("\t\t\t\t"); 822 f_print(fout, "\t\t\t\texit(1);\n"); 823 f_print(fout, "\t\t\t}\n"); 824 f_print(fout, "\t\t}\n"); 825 } 826 if (tirpcflag) { 827 f_print(fout, 828 "\t\tif ((%s = svc_tli_create(0, nconf, NULL, \ 829 RPC_MAXDATASIZE, RPC_MAXDATASIZE)) \ 830 == NULL) {\n", 831 TRANSP); 832 } else { 833 f_print(fout, 834 "\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) \ 835 == NULL) {\n", 836 TRANSP); 837 } 838 sprintf(_errbuf, "cannot create server handle"); 839 print_err_message("\t\t\t"); 840 f_print(fout, "\t\t\texit(1);\n"); 841 f_print(fout, "\t\t}\n"); 842 f_print(fout, "\t\tif (nconf)\n"); 843 f_print(fout, "\t\t\tfreenetconfigent(nconf);\n"); 844 for (l = defined; l != NULL; l = l->next) { 845 def = (definition *) l->val; 846 if (def->def_kind != DEF_PROGRAM) { 847 continue; 848 } 849 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 850 f_print(fout, 851 "\t\tif (!svc_reg(%s, %s, %s, ", 852 TRANSP, def->def_name, vp->vers_name); 853 pvname(def->def_name, vp->vers_num); 854 f_print(fout, ", 0)) {\n"); 855 (void) sprintf(_errbuf, "unable to register (%s, %s).", 856 def->def_name, vp->vers_name); 857 print_err_message("\t\t\t"); 858 f_print(fout, "\t\t\texit(1);\n"); 859 f_print(fout, "\t\t}\n"); 860 } 861 } 862 if (timerflag) { 863 f_print(fout, "\t\tif (pmclose) {\n"); 864 f_print(fout, "\t\t\t(void) signal(SIGALRM, closedown);\n"); 865 f_print(fout, "\t\t\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n"); 866 f_print(fout, "\t\t}\n"); 867 } 868 f_print(fout, "\t\tsvc_run();\n"); 869 f_print(fout, "\t\texit(1);\n"); 870 f_print(fout, "\t\t/* NOTREACHED */\n"); 871 f_print(fout, "\t}"); 872} 873 874/* 875 * Support for backgrounding the server if self started. 876 */ 877static void 878write_rpc_svc_fg(const char *infile, const char *sp) 879{ 880 f_print(fout, "#ifndef RPC_SVC_FG\n"); 881 f_print(fout, "%sint size;\n", sp); 882 if (tirpcflag) 883 f_print(fout, "%sstruct rlimit rl;\n", sp); 884 if (inetdflag) 885 f_print(fout, "%sint pid, i;\n\n", sp); 886 f_print(fout, "%spid = fork();\n", sp); 887 f_print(fout, "%sif (pid < 0) {\n", sp); 888 f_print(fout, "%s\tperror(\"cannot fork\");\n", sp); 889 f_print(fout, "%s\texit(1);\n", sp); 890 f_print(fout, "%s}\n", sp); 891 f_print(fout, "%sif (pid)\n", sp); 892 f_print(fout, "%s\texit(0);\n", sp); 893 /* get number of file descriptors */ 894 if (tirpcflag) { 895 f_print(fout, "%srl.rlim_max = 0;\n", sp); 896 f_print(fout, "%sif (getrlimit(RLIMIT_NOFILE, &rl) == -1) {\n", 897 sp); 898 f_print(fout, "%s\tperror(\"getrlimit\");\n", sp); 899 f_print(fout, "%s\texit(1);\n", sp); 900 f_print(fout, "%s}\n", sp); 901 f_print(fout, "%sif ((size = rl.rlim_max) == 0)\n", sp); 902 f_print(fout, "%s\texit(1);\n", sp); 903 } else { 904 f_print(fout, "%ssize = getdtablesize();\n", sp); 905 } 906 907 f_print(fout, "%sfor (i = 0; i < size; i++)\n", sp); 908 f_print(fout, "%s\t(void) close(i);\n", sp); 909 /* Redirect stderr and stdout to console */ 910 f_print(fout, "%si = open(\"/dev/console\", 2);\n", sp); 911 f_print(fout, "%s(void) dup2(i, 1);\n", sp); 912 f_print(fout, "%s(void) dup2(i, 2);\n", sp); 913 /* This removes control of the controlling terminal */ 914 if (tirpcflag) 915 f_print(fout, "%ssetsid();\n", sp); 916 else { 917 f_print(fout, "%si = open(\"/dev/tty\", 2);\n", sp); 918 f_print(fout, "%sif (i >= 0) {\n", sp); 919 f_print(fout, 920 "%s\t(void) ioctl(i, TIOCNOTTY, (char *)NULL);\n", sp); 921 f_print(fout, "%s\t(void) close(i);\n", sp); 922 f_print(fout, "%s}\n", sp); 923 } 924 if (!logflag) 925 open_log_file(infile, sp); 926 f_print(fout, "#endif\n"); 927 if (logflag) 928 open_log_file(infile, sp); 929} 930 931static void 932open_log_file(const char *infile, const char *sp) 933{ 934 char *s; 935 936 s = strrchr(infile, '.'); 937 if (s) 938 *s = '\0'; 939 f_print(fout, "%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, infile); 940 if (s) 941 *s = '.'; 942} 943 944 945 946 947/* 948 * write a registration for the given transport for Inetd 949 */ 950void 951write_inetd_register(const char *transp) 952{ 953 list *l; 954 definition *def; 955 version_list *vp; 956 const char *sp; 957 int isudp; 958 char tmpbuf[32]; 959 960 if (inetdflag) 961 sp = "\t"; 962 else 963 sp = ""; 964 if (streq(transp, "udp")) 965 isudp = 1; 966 else 967 isudp = 0; 968 f_print(fout, "\n"); 969 if (inetdflag) { 970 f_print(fout, 971 "\tif ((_rpcfdtype == 0) || (_rpcfdtype == %s)) {\n", 972 isudp ? "SOCK_DGRAM" : "SOCK_STREAM"); 973 } 974 f_print(fout, "%s\t%s = svc%s_create(%s", 975 sp, TRANSP, transp, inetdflag? "sock": "RPC_ANYSOCK"); 976 if (!isudp) 977 f_print(fout, ", 0, 0"); 978 f_print(fout, ");\n"); 979 f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP); 980 (void) sprintf(_errbuf, "cannot create %s service.", transp); 981 (void) sprintf(tmpbuf, "%s\t\t", sp); 982 print_err_message(tmpbuf); 983 f_print(fout, "%s\t\texit(1);\n", sp); 984 f_print(fout, "%s\t}\n", sp); 985 986 if (inetdflag) { 987 f_print(fout, "%s\tif (!_rpcpmstart)\n\t", sp); 988 f_print(fout, "%s\tproto = IPPROTO_%s;\n", 989 sp, isudp ? "UDP": "TCP"); 990 } 991 for (l = defined; l != NULL; l = l->next) { 992 def = (definition *) l->val; 993 if (def->def_kind != DEF_PROGRAM) { 994 continue; 995 } 996 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 997 f_print(fout, "%s\tif (!svc_register(%s, %s, %s, ", 998 sp, TRANSP, def->def_name, vp->vers_name); 999 pvname(def->def_name, vp->vers_num); 1000 if (inetdflag) 1001 f_print(fout, ", proto)) {\n"); 1002 else 1003 f_print(fout, ", IPPROTO_%s)) {\n", 1004 isudp ? "UDP": "TCP"); 1005 (void) sprintf(_errbuf, 1006 "unable to register (%s, %s, %s).", 1007 def->def_name, vp->vers_name, transp); 1008 print_err_message(tmpbuf); 1009 f_print(fout, "%s\t\texit(1);\n", sp); 1010 f_print(fout, "%s\t}\n", sp); 1011 } 1012 } 1013 if (inetdflag) 1014 f_print(fout, "\t}\n"); 1015} 1016