tools/rpcgen/rpc_svcout.c

   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 or with the express written consent of
   8  * Sun Microsystems, Inc.
   9  *
  10  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  11  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  12  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  13  *
  14  * Sun RPC is provided with no support and without any obligation on the
  15  * part of Sun Microsystems, Inc. to assist in its use, correction,
  16  * modification or enhancement.
  17  *
  18  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  19  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  20  * OR ANY PART THEREOF.
  21  *
  22  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  23  * or profits or other special, indirect and consequential damages, even if
  24  * Sun has been advised of the possibility of such damages.
  25  *
  26  * Sun Microsystems, Inc.
  27  * 2550 Garcia Avenue
  28  * Mountain View, California  94043
  29  */
  30
  31 #if 0
  32  static char sccsid[] = "@(#)rpc_svcout.c 1.29 89/03/30 (C) 1987 SMI";
  33 #endif
  34
  35 /*
  36  * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler
  37  */
  38 #include <stdio.h>
  39 #include <string.h>
  40 #include "rpc_parse.h"
  41 #include "rpc_util.h"
  42 #include "rpc_output.h"
  43
  44 static void     write_real_program(definition *def);
  45 static void     write_program(definition *def, char *storage);
  46 static void     printerr(char *err, char *transp);
  47 static void     printif(char *proc, char *transp, char *prefix, char *arg);
  48 static void     write_inetmost(char *infile);
  49 static void     print_return(char *space);
  50 static void     print_pmapunset(char *space);
  51 static void     print_err_message(char *space);
  52 static void     write_timeout_func(void);
  53 static void     write_pm_most(char *infile, int netflag);
  54 static void     write_rpc_svc_fg(char *infile, char *sp);
  55 static void     open_log_file(char *infile, char *sp);
  56
  57 static char RQSTP[] = "rqstp";
  58 static char TRANSP[] = "transp";
  59 static char ARG[] = "argument";
  60 static char RESULT[] = "result";
  61 static char ROUTINE[] = "local";
  62
  63 char _errbuf[256];      /* For all messages */
  64
  65 static void
  66 p_xdrfunc(char *rname, char *typename)
  67 {
  68         if (Cflag)
  69                 f_print(fout, "\t\txdr_%s = (xdrproc_t) xdr_%s;\n", rname,
  70                         stringfix(typename));
  71         else
  72                 f_print(fout, "\t\txdr_%s = xdr_%s;\n", 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(char *infile, int netflag, int nomain)
  89 {
  90         if (inetdflag || pmflag) {
  91                 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                 f_print(fout, "%s int _rpcfdtype;", var_type );
  96                 f_print(fout, "\t\t/* Whether Stream or Datagram ? */\n");
  97                 if (timerflag) {
  98                         f_print(fout, "%s int _rpcsvcdirty;", var_type );
  99                         f_print(fout, "\t/* Still serving ? */\n");
 100                 }
 101                 write_svc_aux( nomain );
 102         }
 103         /* write out dispatcher and stubs */
 104         write_programs( nomain? (char *)NULL : "static" );
 105
 106         if( nomain )
 107           return;
 108
 109         f_print(fout, "\nmain()\n");
 110         f_print(fout, "{\n");
 111         if (inetdflag) {
 112                 write_inetmost(infile); /* Includes call to write_rpc_svc_fg() */
 113         } else {
 114           if( tirpcflag ) {
 115                 if (netflag) {
 116                         f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP);
 117                         f_print(fout, "\tstruct netconfig *nconf = NULL;\n");
 118                 }
 119                 f_print(fout, "\tpid_t pid;\n");
 120                 f_print(fout, "\tint i;\n");
 121                 f_print(fout, "\tchar mname[FMNAMESZ + 1];\n\n");
 122                 write_pm_most(infile, netflag);
 123                 f_print(fout, "\telse {\n");
 124                 write_rpc_svc_fg(infile, "\t\t");
 125                 f_print(fout, "\t}\n");
 126               } else {
 127                 f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP);
 128                 f_print(fout, "\n");
 129                 print_pmapunset("\t");
 130               }
 131         }
 132
 133         if (logflag && !inetdflag) {
 134                 open_log_file(infile, "\t");
 135         }
 136 }
 137
 138 /*
 139  * write a registration for the given transport
 140  */
 141 void
 142 write_netid_register(char *transp)
 143 {
 144         list *l;
 145         definition *def;
 146         version_list *vp;
 147         char *sp;
 148         char tmpbuf[32];
 149
 150         sp = "";
 151         f_print(fout, "\n");
 152         f_print(fout, "%s\tnconf = getnetconfigent(\"%s\");\n", sp, transp);
 153         f_print(fout, "%s\tif (nconf == NULL) {\n", sp);
 154         (void) sprintf(_errbuf, "cannot find %s netid.", transp);
 155         sprintf(tmpbuf, "%s\t\t", sp);
 156         print_err_message(tmpbuf);
 157         f_print(fout, "%s\t\texit(1);\n", sp);
 158         f_print(fout, "%s\t}\n", sp);
 159         f_print(fout, "%s\t%s = svc_tli_create(RPC_ANYFD, nconf, 0, 0, 0);\n",
 160                         sp, TRANSP);
 161         f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP);
 162         (void) sprintf(_errbuf, "cannot create %s service.", transp);
 163         print_err_message(tmpbuf);
 164         f_print(fout, "%s\t\texit(1);\n", sp);
 165         f_print(fout, "%s\t}\n", sp);
 166
 167         for (l = defined; l != NULL; l = l->next) {
 168                 def = (definition *) l->val;
 169                 if (def->def_kind != DEF_PROGRAM) {
 170                         continue;
 171                 }
 172                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 173                         f_print(fout,
 174                                 "%s\t(void) rpcb_unset(%s, %s, nconf);\n",
 175                                 sp, def->def_name, vp->vers_name);
 176                         f_print(fout,
 177                                 "%s\tif (!svc_reg(%s, %s, %s, ",
 178                                 sp, TRANSP, def->def_name, vp->vers_name);
 179                         pvname(def->def_name, vp->vers_num);
 180                         f_print(fout, ", nconf)) {\n");
 181                         (void) sprintf(_errbuf, "unable to register (%s, %s, %s).",
 182                                         def->def_name, vp->vers_name, transp);
 183                         print_err_message(tmpbuf);
 184                         f_print(fout, "%s\t\texit(1);\n", sp);
 185                         f_print(fout, "%s\t}\n", sp);
 186                 }
 187         }
 188         f_print(fout, "%s\tfreenetconfigent(nconf);\n", sp);
 189 }
 190
 191 /*
 192  * write a registration for the given transport for TLI
 193  */
 194 void
 195 write_nettype_register(char *transp)
 196 {
 197         list *l;
 198         definition *def;
 199         version_list *vp;
 200
 201         for (l = defined; l != NULL; l = l->next) {
 202                 def = (definition *) l->val;
 203                 if (def->def_kind != DEF_PROGRAM) {
 204                         continue;
 205                 }
 206                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 207                         f_print(fout, "\tif (!svc_create(");
 208                         pvname(def->def_name, vp->vers_num);
 209                         f_print(fout, ", %s, %s, \"%s\")) {\n ",
 210                                 def->def_name, vp->vers_name, transp);
 211                         (void) sprintf(_errbuf,
 212                                 "unable to create (%s, %s) for %s.",
 213                                         def->def_name, vp->vers_name, transp);
 214                         print_err_message("\t\t");
 215                         f_print(fout, "\t\texit(1);\n");
 216                         f_print(fout, "\t}\n");
 217                 }
 218         }
 219 }
 220
 221 /*
 222  * write the rest of the service
 223  */
 224 void
 225 write_rest(void)
 226 {
 227         f_print(fout, "\n");
 228         if (inetdflag) {
 229                 f_print(fout, "\tif (%s == (SVCXPRT *)NULL) {\n", TRANSP);
 230                 (void) sprintf(_errbuf, "could not create a handle");
 231                 print_err_message("\t\t");
 232                 f_print(fout, "\t\texit(1);\n");
 233                 f_print(fout, "\t}\n");
 234                 if (timerflag) {
 235                         f_print(fout, "\tif (_rpcpmstart) {\n");
 236                         f_print(fout,
 237                                 "\t\t(void) signal(SIGALRM, %s closedown);\n",
 238                                 Cflag? "(SIG_PF)" : "(void(*)())" );
 239                         f_print(fout, "\t\t(void) alarm(_RPCSVC_CLOSEDOWN);\n");
 240                         f_print(fout, "\t}\n");
 241                 }
 242         }
 243         f_print(fout, "\tsvc_run();\n");
 244         (void) sprintf(_errbuf, "svc_run returned");
 245         print_err_message("\t");
 246         f_print(fout, "\texit(1);\n");
 247         f_print(fout, "\t/* NOTREACHED */\n");
 248         f_print(fout, "}\n");
 249 }
 250
 251 void
 252 write_programs(char *storage)
 253 {
 254         list *l;
 255         definition *def;
 256
 257         /* write out stubs for procedure  definitions */
 258         for (l = defined; l != NULL; l = l->next) {
 259                 def = (definition *) l->val;
 260                 if (def->def_kind == DEF_PROGRAM) {
 261                         write_real_program(def);
 262                 }
 263         }
 264
 265         /* write out dispatcher for each program */
 266         for (l = defined; l != NULL; l = l->next) {
 267                 def = (definition *) l->val;
 268                 if (def->def_kind == DEF_PROGRAM) {
 269                         write_program(def, storage);
 270                 }
 271         }
 272
 273
 274 }
 275
 276 /* write out definition of internal function (e.g. _printmsg_1(...))
 277    which calls server's defintion of actual function (e.g. printmsg_1(...)).
 278    Unpacks single user argument of printmsg_1 to call-by-value format
 279    expected by printmsg_1. */
 280 static void
 281 write_real_program(definition *def)
 282 {
 283         version_list *vp;
 284         proc_list *proc;
 285         decl_list *l;
 286
 287         if( !newstyle ) return;  /* not needed for old style */
 288         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 289                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 290                         f_print(fout, "\n");
 291                         internal_proctype(proc);
 292                         f_print(fout, "\n_");
 293                         pvname(proc->proc_name, vp->vers_num);
 294                         if( Cflag ) {
 295                           f_print(fout, "(" );
 296                           /* arg name */
 297                           if (proc->arg_num > 1)
 298                             f_print(fout, proc->args.argname);
 299                           else
 300                             ptype(proc->args.decls->decl.prefix,
 301                                   proc->args.decls->decl.type, 0);
 302                           f_print(fout, " *argp, struct svc_req *%s)\n",
 303                                   RQSTP);
 304                         } else {
 305                           f_print(fout, "(argp, %s)\n", RQSTP );
 306                           /* arg name */
 307                           if (proc->arg_num > 1)
 308                             f_print(fout, "\t%s *argp;\n", proc->args.argname);
 309                           else {
 310                             f_print(fout, "\t");
 311                             ptype(proc->args.decls->decl.prefix,
 312                                   proc->args.decls->decl.type, 0);
 313                             f_print(fout, " *argp;\n");
 314                           }
 315                           f_print(fout, "       struct svc_req *%s;\n", RQSTP);
 316                         }
 317
 318                         f_print(fout, "{\n");
 319                         f_print(fout, "\treturn(");
 320                         if( Cflag )
 321                           pvname_svc(proc->proc_name, vp->vers_num);
 322                         else
 323                           pvname(proc->proc_name, vp->vers_num);
 324                         f_print(fout, "(");
 325                         if (proc->arg_num < 2) { /* single argument */
 326                           if (!streq( proc->args.decls->decl.type, "void"))
 327                             f_print(fout, "*argp, ");  /* non-void */
 328                         } else {
 329                           for (l = proc->args.decls;  l != NULL; l = l->next)
 330                             f_print(fout, "argp->%s, ", l->decl.name);
 331                         }
 332                         f_print(fout, "%s));\n}\n", RQSTP);
 333                 }
 334         }
 335 }
 336
 337 static void
 338 write_program(definition *def, char *storage)
 339 {
 340         version_list *vp;
 341         proc_list *proc;
 342         int filled;
 343
 344         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 345                 f_print(fout, "\n");
 346                 if (storage != NULL) {
 347                         f_print(fout, "%s ", storage);
 348                 }
 349                 f_print(fout, "void\n");
 350                 pvname(def->def_name, vp->vers_num);
 351
 352                 if (Cflag) {
 353                    f_print(fout, "(struct svc_req *%s, ", RQSTP);
 354                    f_print(fout, "register SVCXPRT *%s)\n", TRANSP);
 355                 } else {
 356                    f_print(fout, "(%s, %s)\n", RQSTP, TRANSP);
 357                    f_print(fout, "      struct svc_req *%s;\n", RQSTP);
 358                    f_print(fout, "      register SVCXPRT *%s;\n", TRANSP);
 359                 }
 360
 361                 f_print(fout, "{\n");
 362
 363                 filled = 0;
 364                 f_print(fout, "\tunion {\n");
 365                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 366                         if (proc->arg_num < 2) { /* single argument */
 367                                 if (streq(proc->args.decls->decl.type,
 368                                           "void")) {
 369                                         continue;
 370                                 }
 371                                 filled = 1;
 372                                 f_print(fout, "\t\t");
 373                                 ptype(proc->args.decls->decl.prefix,
 374                                       proc->args.decls->decl.type, 0);
 375                                 pvname(proc->proc_name, vp->vers_num);
 376                                 f_print(fout, "_arg;\n");
 377
 378                         }
 379                         else {
 380                                 filled = 1;
 381                                 f_print(fout, "\t\t%s", proc->args.argname);
 382                                 f_print(fout, " ");
 383                                 pvname(proc->proc_name, vp->vers_num);
 384                                 f_print(fout, "_arg;\n");
 385                         }
 386                 }
 387                 if (!filled) {
 388                         f_print(fout, "\t\tint fill;\n");
 389                 }
 390                 f_print(fout, "\t} %s;\n", ARG);
 391                 f_print(fout, "\tchar *%s;\n", RESULT);
 392
 393                 if (Cflag) {
 394                     f_print(fout, "\txdrproc_t xdr_%s, xdr_%s;\n", ARG, RESULT);
 395                     f_print(fout,
 396                             "\tchar *(*%s)(char *, struct svc_req *);\n",
 397                             ROUTINE);
 398                 } else {
 399                     f_print(fout, "\tbool_t (*xdr_%s)(), (*xdr_%s)();\n", ARG, RESULT);
 400                     f_print(fout, "\tchar *(*%s)();\n", ROUTINE);
 401                 }
 402
 403                 f_print(fout, "\n");
 404
 405                 if (timerflag)
 406                         f_print(fout, "\t_rpcsvcdirty = 1;\n");
 407                 f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP);
 408                 if (!nullproc(vp->procs)) {
 409                         f_print(fout, "\tcase NULLPROC:\n");
 410                         f_print(fout,
 411                         "\t\t(void) svc_sendreply(%s, (xdrproc_t) xdr_void, (char *)NULL);\n",
 412                                         TRANSP);
 413                         print_return("\t\t");
 414                         f_print(fout, "\n");
 415                 }
 416                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 417                         f_print(fout, "\tcase %s:\n", proc->proc_name);
 418                         if (proc->arg_num < 2) { /* single argument */
 419                           p_xdrfunc( ARG, proc->args.decls->decl.type);
 420                         } else {
 421                           p_xdrfunc( ARG, proc->args.argname);
 422                         }
 423                         p_xdrfunc( RESULT, proc->res_type);
 424                         if( Cflag )
 425                             f_print(fout,
 426                                     "\t\t%s = (char *(*)(char *, struct svc_req *)) ",
 427                                     ROUTINE);
 428                         else
 429                             f_print(fout, "\t\t%s = (char *(*)()) ", ROUTINE);
 430
 431                         if (newstyle) { /* new style: calls internal routine */
 432                                 f_print(fout,"_");
 433                         }
 434                         /* Not sure about the following...
 435                          * rpc_hout always generates foobar_1_svc for
 436                          * the service procedure, so why should we use
 437                          * foobar_1 here?! --okir */
 438 #if 0
 439                         if( Cflag && !newstyle )
 440                           pvname_svc(proc->proc_name, vp->vers_num);
 441                         else
 442                           pvname(proc->proc_name, vp->vers_num);
 443 #else
 444                         pvname_svc(proc->proc_name, vp->vers_num);
 445 #endif
 446                         f_print(fout, ";\n");
 447                         f_print(fout, "\t\tbreak;\n\n");
 448                 }
 449                 f_print(fout, "\tdefault:\n");
 450                 printerr("noproc", TRANSP);
 451                 print_return("\t\t");
 452                 f_print(fout, "\t}\n");
 453
 454                 f_print(fout, "\t(void) memset((char *)&%s, 0, sizeof (%s));\n", ARG, ARG);
 455                 if (Cflag)
 456                     printif("getargs", TRANSP, "(caddr_t) &", ARG);
 457                 else
 458                     printif("getargs", TRANSP, "&", ARG);
 459                 printerr("decode", TRANSP);
 460                 print_return("\t\t");
 461                 f_print(fout, "\t}\n");
 462
 463                 if (Cflag)
 464                     f_print(fout, "\t%s = (*%s)((char *)&%s, %s);\n",
 465                             RESULT, ROUTINE, ARG, RQSTP);
 466                 else
 467                     f_print(fout, "\t%s = (*%s)(&%s, %s);\n",
 468                             RESULT, ROUTINE, ARG, RQSTP);
 469                 f_print(fout,
 470                         "\tif (%s != NULL && !svc_sendreply(%s, "
 471                         "(xdrproc_t) xdr_%s, %s)) {\n",
 472                         RESULT, TRANSP, RESULT, RESULT);
 473                 printerr("systemerr", TRANSP);
 474                 f_print(fout, "\t}\n");
 475
 476                 if (Cflag)
 477                     printif("freeargs", TRANSP, "(caddr_t) &", ARG);
 478                 else
 479                     printif("freeargs", TRANSP, "&", ARG);
 480                 (void) sprintf(_errbuf, "unable to free arguments");
 481                 print_err_message("\t\t");
 482                 f_print(fout, "\t\texit(1);\n");
 483                 f_print(fout, "\t}\n");
 484                 print_return("\t");
 485                 f_print(fout, "}\n");
 486         }
 487 }
 488
 489 static void
 490 printerr(char *err, char *transp)
 491 {
 492         f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp);
 493 }
 494
 495 static void
 496 printif(char *proc, char *transp, char *prefix, char *arg)
 497 {
 498         f_print(fout, "\tif (!svc_%s(%s, (xdrproc_t) xdr_%s, (caddr_t) %s%s)) {\n",
 499                 proc, transp, arg, prefix, arg);
 500 }
 501
 502 int
 503 nullproc(proc_list *proc)
 504 {
 505         for (; proc != NULL; proc = proc->next) {
 506                 if (streq(proc->proc_num, "0")) {
 507                         return (1);
 508                 }
 509         }
 510         return (0);
 511 }
 512
 513 static void
 514 write_inetmost(char *infile)
 515 {
 516         f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP);
 517         f_print(fout, "\tint sock;\n");
 518         f_print(fout, "\tint proto;\n");
 519         f_print(fout, "\tstruct sockaddr_in saddr;\n");
 520         f_print(fout, "\tint asize = sizeof (saddr);\n");
 521         f_print(fout, "\n");
 522         f_print(fout,
 523         "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n");
 524         f_print(fout, "\t\tint ssize = sizeof (int);\n\n");
 525         f_print(fout, "\t\tif (saddr.sin_family != AF_INET)\n");
 526         f_print(fout, "\t\t\texit(1);\n");
 527         f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n");
 528         f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n");
 529         f_print(fout, "\t\t\texit(1);\n");
 530         f_print(fout, "\t\tsock = 0;\n");
 531         f_print(fout, "\t\t_rpcpmstart = 1;\n");
 532         f_print(fout, "\t\tproto = 0;\n");
 533         open_log_file(infile, "\t\t");
 534         f_print(fout, "\t} else {\n");
 535         write_rpc_svc_fg(infile, "\t\t");
 536         f_print(fout, "\t\tsock = RPC_ANYSOCK;\n");
 537         print_pmapunset("\t\t");
 538         f_print(fout, "\t}\n");
 539 }
 540
 541 static void
 542 print_return(char *space)
 543 {
 544         if (exitnow)
 545                 f_print(fout, "%sexit(0);\n", space);
 546         else {
 547                 if (timerflag)
 548                         f_print(fout, "%s_rpcsvcdirty = 0;\n", space);
 549                 f_print(fout, "%sreturn;\n", space);
 550         }
 551 }
 552
 553 static void
 554 print_pmapunset(char *space)
 555 {
 556         list *l;
 557         definition *def;
 558         version_list *vp;
 559
 560         for (l = defined; l != NULL; l = l->next) {
 561                 def = (definition *) l->val;
 562                 if (def->def_kind == DEF_PROGRAM) {
 563                         for (vp = def->def.pr.versions; vp != NULL;
 564                                         vp = vp->next) {
 565                                 f_print(fout, "%s(void) pmap_unset(%s, %s);\n",
 566                                         space, def->def_name, vp->vers_name);
 567                         }
 568                 }
 569         }
 570 }
 571
 572 static void
 573 print_err_message(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(int nomain)
 588 {
 589         if (!logflag)
 590                 write_msg_out();
 591         if( !nomain )
 592           write_timeout_func();
 593 }
 594
 595 /*
 596  * Write the _msgout function
 597  */
 598 void
 599 write_msg_out(void)
 600 {
 601         f_print(fout, "\n");
 602         f_print(fout, "static\n");
 603         if( !Cflag ) {
 604           f_print(fout, "void _msgout(msg)\n");
 605           f_print(fout, "\tchar *msg;\n");
 606         } else {
 607           f_print(fout, "void _msgout(char* msg)\n");
 608         }
 609         f_print(fout, "{\n");
 610         f_print(fout, "#ifdef RPC_SVC_FG\n");
 611         if (inetdflag || pmflag)
 612                 f_print(fout, "\tif (_rpcpmstart)\n");
 613         f_print(fout, "\t\tsyslog(LOG_ERR, \"%%s\", msg);\n");
 614         f_print(fout, "\telse\n");
 615         f_print(fout, "\t\t(void) fprintf(stderr, \"%%s\\n\", msg);\n");
 616         f_print(fout, "#else\n");
 617         f_print(fout, "\tsyslog(LOG_ERR, \"%%s\", msg);\n");
 618         f_print(fout, "#endif\n");
 619         f_print(fout, "}\n");
 620 }
 621
 622 /*
 623  * Write the timeout function
 624  */
 625 static void
 626 write_timeout_func(void)
 627 {
 628         if (!timerflag)
 629                 return;
 630         f_print(fout, "\n");
 631         f_print(fout, "static void\n");
 632         f_print(fout, "closedown()\n");
 633         f_print(fout, "{\n");
 634         f_print(fout, "\tif (_rpcsvcdirty == 0) {\n");
 635         f_print(fout, "\t\tstatic int size;\n");
 636         f_print(fout, "\t\tint i, openfd;\n");
 637         if (tirpcflag && pmflag) {
 638                 f_print(fout, "\t\tstruct t_info tinfo;\n\n");
 639                 f_print(fout, "\t\tif (!t_getinfo(0, &tinfo) && (tinfo.servtype == T_CLTS))\n");
 640         } else {
 641                 f_print(fout, "\n\t\tif (_rpcfdtype == SOCK_DGRAM)\n");
 642         }
 643         f_print(fout, "\t\t\texit(0);\n");
 644         f_print(fout, "\t\tif (size == 0) {\n");
 645         if( tirpcflag ) {
 646           f_print(fout, "\t\t\tstruct rlimit rl;\n\n");
 647           f_print(fout, "\t\t\trl.rlim_max = 0;\n");
 648           f_print(fout, "\t\t\tgetrlimit(RLIMIT_NOFILE, &rl);\n");
 649           f_print(fout, "\t\t\tif ((size = rl.rlim_max) == 0)\n");
 650           f_print(fout, "\t\t\t\treturn;\n");
 651         } else {
 652           f_print(fout, "\t\t\tsize = getdtablesize();\n");
 653         }
 654         f_print(fout, "\t\t}\n");
 655         f_print(fout, "\t\tfor (i = 0, openfd = 0; i < size && openfd < 2; i++)\n");
 656         f_print(fout, "\t\t\tif (FD_ISSET(i, &svc_fdset))\n");
 657         f_print(fout, "\t\t\t\topenfd++;\n");
 658         f_print(fout, "\t\tif (openfd <= 1)\n");
 659         f_print(fout, "\t\t\texit(0);\n");
 660         f_print(fout, "\t}\n");
 661         f_print(fout, "\t(void) alarm(_RPCSVC_CLOSEDOWN);\n");
 662         f_print(fout, "}\n");
 663 }
 664
 665 /*
 666  * Write the most of port monitor support
 667  */
 668 static void
 669 write_pm_most(char *infile, int netflag)
 670 {
 671         list *l;
 672         definition *def;
 673         version_list *vp;
 674
 675         f_print(fout, "\tif (!ioctl(0, I_LOOK, mname) &&\n");
 676         f_print(fout, "\t\t(!strcmp(mname, \"sockmod\") ||");
 677         f_print(fout, " !strcmp(mname, \"timod\"))) {\n");
 678         f_print(fout, "\t\tchar *netid;\n");
 679         if (!netflag) { /* Not included by -n option */
 680                 f_print(fout, "\t\tstruct netconfig *nconf = NULL;\n");
 681                 f_print(fout, "\t\tSVCXPRT *%s;\n", TRANSP);
 682         }
 683         if( timerflag )
 684           f_print(fout, "\t\tint pmclose;\n");
 685 /* not necessary, defined in /usr/include/stdlib */
 686 /*      f_print(fout, "\t\textern char *getenv();\n");*/
 687         f_print(fout, "\n");
 688         f_print(fout, "\t\t_rpcpmstart = 1;\n");
 689         if (logflag)
 690                 open_log_file(infile, "\t\t");
 691         f_print(fout, "\t\tif ((netid = getenv(\"NLSPROVIDER\")) == NULL) {\n");
 692         sprintf(_errbuf, "cannot get transport name");
 693         print_err_message("\t\t\t");
 694         f_print(fout, "\t\t} else if ((nconf = getnetconfigent(netid)) == NULL) {\n");
 695         sprintf(_errbuf, "cannot get transport info");
 696         print_err_message("\t\t\t");
 697         f_print(fout, "\t\t}\n");
 698         /*
 699          * A kludgy support for inetd services. Inetd only works with
 700          * sockmod, and RPC works only with timod, hence all this jugglery
 701          */
 702         f_print(fout, "\t\tif (strcmp(mname, \"sockmod\") == 0) {\n");
 703         f_print(fout, "\t\t\tif (ioctl(0, I_POP, 0) || ioctl(0, I_PUSH, \"timod\")) {\n");
 704         sprintf(_errbuf, "could not get the right module");
 705         print_err_message("\t\t\t\t");
 706         f_print(fout, "\t\t\t\texit(1);\n");
 707         f_print(fout, "\t\t\t}\n");
 708         f_print(fout, "\t\t}\n");
 709         if( timerflag )
 710           f_print(fout, "\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n");
 711         f_print(fout, "\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) == NULL) {\n",
 712                         TRANSP);
 713         sprintf(_errbuf, "cannot create server handle");
 714         print_err_message("\t\t\t");
 715         f_print(fout, "\t\t\texit(1);\n");
 716         f_print(fout, "\t\t}\n");
 717         f_print(fout, "\t\tif (nconf)\n");
 718         f_print(fout, "\t\t\tfreenetconfigent(nconf);\n");
 719         for (l = defined; l != NULL; l = l->next) {
 720                 def = (definition *) l->val;
 721                 if (def->def_kind != DEF_PROGRAM) {
 722                         continue;
 723                 }
 724                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 725                         f_print(fout,
 726                                 "\t\tif (!svc_reg(%s, %s, %s, ",
 727                                 TRANSP, def->def_name, vp->vers_name);
 728                         pvname(def->def_name, vp->vers_num);
 729                         f_print(fout, ", 0)) {\n");
 730                         (void) sprintf(_errbuf, "unable to register (%s, %s).",
 731                                         def->def_name, vp->vers_name);
 732                         print_err_message("\t\t\t");
 733                         f_print(fout, "\t\t\texit(1);\n");
 734                         f_print(fout, "\t\t}\n");
 735                 }
 736         }
 737         if (timerflag) {
 738                 f_print(fout, "\t\tif (pmclose) {\n");
 739                 f_print(fout, "\t\t\t(void) signal(SIGALRM, %s closedown);\n",
 740                                 Cflag? "(SIG_PF)" : "(void(*)())" );
 741                 f_print(fout, "\t\t\t(void) alarm(_RPCSVC_CLOSEDOWN);\n");
 742                 f_print(fout, "\t\t}\n");
 743         }
 744         f_print(fout, "\t\tsvc_run();\n");
 745         f_print(fout, "\t\texit(1);\n");
 746         f_print(fout, "\t\t/* NOTREACHED */\n");
 747         f_print(fout, "\t}\n");
 748 }
 749
 750 /*
 751  * Support for backgrounding the server if self started.
 752  */
 753 static void
 754 write_rpc_svc_fg(char *infile, char *sp)
 755 {
 756         f_print(fout, "#ifndef RPC_SVC_FG\n");
 757         f_print(fout, "%sint size;\n", sp);
 758         if( tirpcflag )
 759                 f_print(fout, "%sstruct rlimit rl;\n", sp);
 760         if (inetdflag)
 761                 f_print(fout, "%sint pid, i;\n\n", sp);
 762         f_print(fout, "%spid = fork();\n", sp);
 763         f_print(fout, "%sif (pid < 0) {\n", sp);
 764         f_print(fout, "%s\tperror(\"cannot fork\");\n", sp);
 765         f_print(fout, "%s\texit(1);\n", sp);
 766         f_print(fout, "%s}\n", sp);
 767         f_print(fout, "%sif (pid)\n", sp);
 768         f_print(fout, "%s\texit(0);\n", sp);
 769         /* get number of file descriptors */
 770         if( tirpcflag ) {
 771           f_print(fout, "%srl.rlim_max = 0;\n", sp);
 772           f_print(fout, "%sgetrlimit(RLIMIT_NOFILE, &rl);\n", sp);
 773           f_print(fout, "%sif ((size = rl.rlim_max) == 0)\n", sp);
 774           f_print(fout, "%s\texit(1);\n", sp);
 775         } else {
 776           f_print(fout, "%ssize = getdtablesize();\n", sp);
 777         }
 778
 779         f_print(fout, "%sfor (i = 0; i < size; i++)\n", sp);
 780         f_print(fout, "%s\t(void) close(i);\n", sp);
 781         /* Redirect stderr and stdout to console */
 782         f_print(fout, "%si = open(\"/dev/console\", 2);\n", sp);
 783         f_print(fout, "%s(void) dup2(i, 1);\n", sp);
 784         f_print(fout, "%s(void) dup2(i, 2);\n", sp);
 785         /* This removes control of the controlling terminal */
 786         if( tirpcflag )
 787           f_print(fout, "%ssetsid();\n", sp);
 788         else {
 789           f_print(fout, "%si = open(\"/dev/tty\", 2);\n", sp);
 790           f_print(fout, "%sif (i >= 0) {\n", sp);
 791           f_print(fout, "%s\t(void) ioctl(i, TIOCNOTTY, (char *)NULL);\n", sp);;
 792           f_print(fout, "%s\t(void) close(i);\n", sp);
 793           f_print(fout, "%s}\n", sp);
 794         }
 795         if (!logflag)
 796                 open_log_file(infile, sp);
 797         f_print(fout, "#endif\n");
 798         if (logflag)
 799                 open_log_file(infile, sp);
 800 }
 801
 802 static void
 803 open_log_file(char *infile, char *sp)
 804 {
 805         char *s;
 806
 807         s = strrchr(infile, '.');
 808         if (s)
 809                 *s = '\0';
 810         f_print(fout,"%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, infile);
 811         if (s)
 812                 *s = '.';
 813 }
 814
 815
 816
 817
 818 /*
 819  * write a registration for the given transport for Inetd
 820  */
 821 void
 822 write_inetd_register(char *transp)
 823 {
 824         list *l;
 825         definition *def;
 826         version_list *vp;
 827         char *sp;
 828         int isudp;
 829         char tmpbuf[32];
 830
 831         if (inetdflag)
 832                 sp = "\t";
 833         else
 834                 sp = "";
 835         if (streq(transp, "udp"))
 836                 isudp = 1;
 837         else
 838                 isudp = 0;
 839         f_print(fout, "\n");
 840         if (inetdflag) {
 841                 f_print(fout, "\tif ((_rpcfdtype == 0) || (_rpcfdtype == %s)) {\n",
 842                                 isudp ? "SOCK_DGRAM" : "SOCK_STREAM");
 843         }
 844         f_print(fout, "%s\t%s = svc%s_create(%s",
 845                 sp, TRANSP, transp, inetdflag? "sock": "RPC_ANYSOCK");
 846         if (!isudp)
 847                 f_print(fout, ", 0, 0");
 848         f_print(fout, ");\n");
 849         f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP);
 850         (void) sprintf(_errbuf, "cannot create %s service.", transp);
 851         (void) sprintf(tmpbuf, "%s\t\t", sp);
 852         print_err_message(tmpbuf);
 853         f_print(fout, "%s\t\texit(1);\n", sp);
 854         f_print(fout, "%s\t}\n", sp);
 855
 856         if (inetdflag) {
 857                 f_print(fout, "%s\tif (!_rpcpmstart)\n\t", sp);
 858                 f_print(fout, "%s\tproto = IPPROTO_%s;\n",
 859                                 sp, isudp ? "UDP": "TCP");
 860         }
 861         for (l = defined; l != NULL; l = l->next) {
 862                 def = (definition *) l->val;
 863                 if (def->def_kind != DEF_PROGRAM) {
 864                         continue;
 865                 }
 866                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 867                         f_print(fout, "%s\tif (!svc_register(%s, %s, %s, ",
 868                                 sp, TRANSP, def->def_name, vp->vers_name);
 869                         pvname(def->def_name, vp->vers_num);
 870                         if (inetdflag)
 871                                 f_print(fout, ", proto)) {\n");
 872                         else
 873                                 f_print(fout, ", IPPROTO_%s)) {\n",
 874                                         isudp ? "UDP": "TCP");
 875                         (void) sprintf(_errbuf, "unable to register (%s, %s, %s).",
 876                                         def->def_name, vp->vers_name, transp);
 877                         print_err_message(tmpbuf);
 878                         f_print(fout, "%s\t\texit(1);\n", sp);
 879                         f_print(fout, "%s\t}\n", sp);
 880                 }
 881         }
 882         if (inetdflag)
 883                 f_print(fout, "\t}\n");
 884 }