developer_cmds/rpcgen/rpc_svcout.c

   1 /*      $NetBSD: rpc_svcout.c,v 1.10 1997/10/18 10:54:07 lukem Exp $    */
   2 /*
   3  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   4  * unrestricted use provided that this legend is included on all tape
   5  * media and as a part of the software program in whole or part.  Users
   6  * may copy or modify Sun RPC without charge, but are not authorized
   7  * to license or distribute it to anyone else except as part of a product or
   8  * program developed by the user or with the express written consent of
   9  * Sun Microsystems, Inc.
  10  *
  11  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  12  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  13  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  14  *
  15  * Sun RPC is provided with no support and without any obligation on the
  16  * part of Sun Microsystems, Inc. to assist in its use, correction,
  17  * modification or enhancement.
  18  *
  19  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  20  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  21  * OR ANY PART THEREOF.
  22  *
  23  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  24  * or profits or other special, indirect and consequential damages, even if
  25  * Sun has been advised of the possibility of such damages.
  26  *
  27  * Sun Microsystems, Inc.
  28  * 2550 Garcia Avenue
  29  * Mountain View, California  94043
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 #if 0
  35 static char sccsid[] = "@(#)rpc_svcout.c 1.29 89/03/30 (C) 1987 SMI";
  36 #else
  37 __RCSID("$NetBSD: rpc_svcout.c,v 1.10 1997/10/18 10:54:07 lukem Exp $");
  38 #endif
  39 #endif
  40
  41 /*
  42  * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler
  43  */
  44 #include <stdio.h>
  45 #include <string.h>
  46 #include "rpc_scan.h"
  47 #include "rpc_parse.h"
  48 #include "rpc_util.h"
  49
  50 static char RQSTP[] = "rqstp";
  51 static char TRANSP[] = "transp";
  52 static char ARG[] = "argument";
  53 static char RESULT[] = "result";
  54 static char ROUTINE[] = "local";
  55
  56 static void p_xdrfunc __P((char *, char *));
  57 static void internal_proctype __P((proc_list *));
  58 static void write_real_program __P((definition *));
  59 static void write_program __P((definition *, char *));
  60 static void printerr __P((char *, char *));
  61 static void printif __P((char *, char *, char *, char *));
  62 static void write_inetmost __P((char *));
  63 static void print_return __P((char *));
  64 static void print_pmapunset __P((char *));
  65 static void print_err_message __P((char *));
  66 static void write_timeout_func __P((void));
  67 static void write_caller_func __P((void));
  68 static void write_pm_most __P((char *, int));
  69 static void write_rpc_svc_fg __P((char *, char *));
  70 static void open_log_file __P((char *, char *));
  71
  72 char    _errbuf[256];           /* For all messages */
  73
  74 static void
  75 p_xdrfunc(rname, typename)
  76         char   *rname;
  77         char   *typename;
  78 {
  79         if (Cflag)
  80                 f_print(fout, "\t\txdr_%s = (xdrproc_t) xdr_%s;\n", rname,
  81                     stringfix(typename));
  82         else
  83                 f_print(fout, "\t\txdr_%s = xdr_%s;\n", rname, stringfix(typename));
  84 }
  85
  86 static void
  87 internal_proctype(plist)
  88         proc_list *plist;
  89 {
  90         f_print(fout, "static ");
  91         ptype(plist->res_prefix, plist->res_type, 1);
  92         f_print(fout, "*");
  93 }
  94
  95
  96 /*
  97  * write most of the service, that is, everything but the registrations.
  98  */
  99 void
 100 write_most(infile, netflag, nomain)
 101         char   *infile;         /* our name */
 102         int     netflag;
 103         int     nomain;
 104 {
 105         if (inetdflag || pmflag) {
 106                 char   *var_type;
 107                 var_type = (nomain ? "extern" : "static");
 108                 f_print(fout, "%s int _rpcpmstart;", var_type);
 109                 f_print(fout, "\t\t/* Started by a port monitor ? */\n");
 110                 f_print(fout, "%s int _rpcfdtype;", var_type);
 111                 f_print(fout, "\t\t/* Whether Stream or Datagram ? */\n");
 112                 if (timerflag) {
 113                         f_print(fout, "%s int _rpcsvcdirty;", var_type);
 114                         f_print(fout, "\t/* Still serving ? */\n");
 115                 }
 116                 write_svc_aux(nomain);
 117         }
 118         /* write out dispatcher and stubs */
 119         write_programs(nomain ? (char *) NULL : "static");
 120
 121         if (nomain)
 122                 return;
 123
 124         f_print(fout, "\n\n");
 125         if (Cflag)
 126                 f_print(fout, "int main( int argc, char* argv[] );\n");
 127         f_print(fout, "\nint\n");
 128         if (Cflag)
 129                 f_print(fout, "main( int argc, char* argv[] )\n");
 130         else
 131                 f_print(fout, "main(argc, argv)\nint argc;\nchar *argv[];\n");
 132         f_print(fout, "{\n");
 133         if (inetdflag) {
 134                 write_inetmost(infile); /* Includes call to write_rpc_svc_fg() */
 135         } else {
 136                 if (tirpcflag) {
 137                         if (netflag) {
 138                                 f_print(fout, "\tSVCXPRT *%s;\n", TRANSP);
 139                                 f_print(fout, "\tstruct netconfig *nconf = NULL;\n");
 140                         }
 141                         f_print(fout, "\tpid_t pid;\n");
 142                         f_print(fout, "\tint i;\n");
 143                         f_print(fout, "\tchar mname[FMNAMESZ + 1];\n\n");
 144                         write_pm_most(infile, netflag);
 145                         f_print(fout, "\telse {\n");
 146                         write_rpc_svc_fg(infile, "\t\t");
 147                         f_print(fout, "\t}\n");
 148                 } else {
 149                         f_print(fout, "\tSVCXPRT *%s;\n", TRANSP);
 150                         f_print(fout, "\n");
 151                         print_pmapunset("\t");
 152                 }
 153         }
 154
 155         if (logflag && !inetdflag) {
 156                 open_log_file(infile, "\t");
 157         }
 158 }
 159 /*
 160  * write a registration for the given transport
 161  */
 162 void
 163 write_netid_register(transp)
 164         char   *transp;
 165 {
 166         list   *l;
 167         definition *def;
 168         version_list *vp;
 169         char   *sp;
 170         char    tmpbuf[32];
 171
 172         sp = "";
 173         f_print(fout, "\n");
 174         f_print(fout, "%s\tnconf = getnetconfigent(\"%s\");\n", sp, transp);
 175         f_print(fout, "%s\tif (nconf == NULL) {\n", sp);
 176         (void) sprintf(_errbuf, "cannot find %s netid.", transp);
 177         sprintf(tmpbuf, "%s\t\t", sp);
 178         print_err_message(tmpbuf);
 179         f_print(fout, "%s\t\texit(1);\n", sp);
 180         f_print(fout, "%s\t}\n", sp);
 181         f_print(fout, "%s\t%s = svc_tli_create(RPC_ANYFD, nconf, 0, 0, 0);\n",
 182             sp, TRANSP);
 183         f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP);
 184         (void) sprintf(_errbuf, "cannot create %s service.", transp);
 185         print_err_message(tmpbuf);
 186         f_print(fout, "%s\t\texit(1);\n", sp);
 187         f_print(fout, "%s\t}\n", sp);
 188
 189         for (l = defined; l != NULL; l = l->next) {
 190                 def = (definition *) l->val;
 191                 if (def->def_kind != DEF_PROGRAM) {
 192                         continue;
 193                 }
 194                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 195                         f_print(fout,
 196                             "%s\t(void) rpcb_unset(%s, %s, nconf);\n",
 197                             sp, def->def_name, vp->vers_name);
 198                         f_print(fout,
 199                             "%s\tif (!svc_reg(%s, %s, %s, ",
 200                             sp, TRANSP, def->def_name, vp->vers_name);
 201                         pvname(def->def_name, vp->vers_num);
 202                         f_print(fout, ", nconf)) {\n");
 203                         (void) sprintf(_errbuf, "unable to register (%s, %s, %s).",
 204                             def->def_name, vp->vers_name, transp);
 205                         print_err_message(tmpbuf);
 206                         f_print(fout, "%s\t\texit(1);\n", sp);
 207                         f_print(fout, "%s\t}\n", sp);
 208                 }
 209         }
 210         f_print(fout, "%s\tfreenetconfigent(nconf);\n", sp);
 211 }
 212 /*
 213  * write a registration for the given transport for TLI
 214  */
 215 void
 216 write_nettype_register(transp)
 217         char   *transp;
 218 {
 219         list   *l;
 220         definition *def;
 221         version_list *vp;
 222
 223         for (l = defined; l != NULL; l = l->next) {
 224                 def = (definition *) l->val;
 225                 if (def->def_kind != DEF_PROGRAM) {
 226                         continue;
 227                 }
 228                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 229                         f_print(fout, "\tif (!svc_create(");
 230                         pvname(def->def_name, vp->vers_num);
 231                         f_print(fout, ", %s, %s, \"%s\")) {\n ",
 232                             def->def_name, vp->vers_name, transp);
 233                         (void) sprintf(_errbuf,
 234                             "unable to create (%s, %s) for %s.",
 235                             def->def_name, vp->vers_name, transp);
 236                         print_err_message("\t\t");
 237                         f_print(fout, "\t\texit(1);\n");
 238                         f_print(fout, "\t}\n");
 239                 }
 240         }
 241 }
 242 /*
 243  * write the rest of the service
 244  */
 245 void
 246 write_rest()
 247 {
 248         f_print(fout, "\n");
 249         if (inetdflag) {
 250                 f_print(fout, "\tif (%s == (SVCXPRT *)NULL) {\n", TRANSP);
 251                 (void) sprintf(_errbuf, "could not create a handle");
 252                 print_err_message("\t\t");
 253                 f_print(fout, "\t\texit(1);\n");
 254                 f_print(fout, "\t}\n");
 255                 if (timerflag) {
 256                         f_print(fout, "\tif (_rpcpmstart) {\n");
 257                         f_print(fout,
 258                             "\t\t(void) signal(SIGALRM, %s closedown);\n",
 259                             Cflag ? "(SIG_PF)" : "(void(*)())");
 260                         f_print(fout, "\t\t(void) alarm(_RPCSVC_CLOSEDOWN);\n");
 261                         f_print(fout, "\t}\n");
 262                 }
 263         }
 264         f_print(fout, "\tsvc_run();\n");
 265         (void) sprintf(_errbuf, "svc_run returned");
 266         print_err_message("\t");
 267         f_print(fout, "\texit(1);\n");
 268         f_print(fout, "\t/* NOTREACHED */\n");
 269         f_print(fout, "}\n");
 270 }
 271
 272 void
 273 write_programs(storage)
 274         char   *storage;
 275 {
 276         list   *l;
 277         definition *def;
 278
 279         /* write out stubs for procedure  definitions */
 280         for (l = defined; l != NULL; l = l->next) {
 281                 def = (definition *) l->val;
 282                 if (def->def_kind == DEF_PROGRAM) {
 283                         write_real_program(def);
 284                 }
 285         }
 286
 287         /* write out dispatcher for each program */
 288         for (l = defined; l != NULL; l = l->next) {
 289                 def = (definition *) l->val;
 290                 if (def->def_kind == DEF_PROGRAM) {
 291                         write_program(def, storage);
 292                 }
 293         }
 294
 295
 296 }
 297 /* write out definition of internal function (e.g. _printmsg_1(...))
 298    which calls server's defintion of actual function (e.g. printmsg_1(...)).
 299    Unpacks single user argument of printmsg_1 to call-by-value format
 300    expected by printmsg_1. */
 301 static void
 302 write_real_program(def)
 303         definition *def;
 304 {
 305         version_list *vp;
 306         proc_list *proc;
 307         decl_list *l;
 308
 309         if (!newstyle)
 310                 return;         /* not needed for old style */
 311         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 312                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 313                         f_print(fout, "\n");
 314                         internal_proctype(proc);
 315                         f_print(fout, "\n_");
 316                         pvname(proc->proc_name, vp->vers_num);
 317                         if (Cflag) {
 318                                 f_print(fout, "(");
 319                                 /* arg name */
 320                                 if (proc->arg_num > 1)
 321                                         f_print(fout, "%s", proc->args.argname);
 322                                 else
 323                                         ptype(proc->args.decls->decl.prefix,
 324                                             proc->args.decls->decl.type, 0);
 325                                 f_print(fout, " *argp, struct svc_req *%s)\n",
 326                                     RQSTP);
 327                         } else {
 328                                 f_print(fout, "(argp, %s)\n", RQSTP);
 329                                 /* arg name */
 330                                 if (proc->arg_num > 1)
 331                                         f_print(fout, "\t%s *argp;\n", proc->args.argname);
 332                                 else {
 333                                         f_print(fout, "\t");
 334                                         ptype(proc->args.decls->decl.prefix,
 335                                             proc->args.decls->decl.type, 0);
 336                                         f_print(fout, " *argp;\n");
 337                                 }
 338                                 f_print(fout, " struct svc_req *%s;\n", RQSTP);
 339                         }
 340
 341                         f_print(fout, "{\n");
 342                         f_print(fout, "\treturn(");
 343                         pvname_svc(proc->proc_name, vp->vers_num);
 344                         f_print(fout, "(");
 345                         if (proc->arg_num < 2) {        /* single argument */
 346                                 if (!streq(proc->args.decls->decl.type, "void"))
 347                                         f_print(fout, "*argp, ");       /* non-void */
 348                         } else {
 349                                 for (l = proc->args.decls; l != NULL; l = l->next)
 350                                         f_print(fout, "argp->%s, ", l->decl.name);
 351                         }
 352                         f_print(fout, "%s));\n}\n", RQSTP);
 353                 }
 354         }
 355 }
 356
 357 static void
 358 write_program(def, storage)
 359         definition *def;
 360         char   *storage;
 361 {
 362         version_list *vp;
 363         proc_list *proc;
 364         int     filled;
 365
 366         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 367                 if (Cflag) {
 368                         f_print(fout, "\n");
 369                         if (storage != NULL) {
 370                                 f_print(fout, "%s ", storage);
 371                         }
 372                         f_print(fout, "void ");
 373                         pvname(def->def_name, vp->vers_num);
 374                         f_print(fout, "(struct svc_req *%s, ", RQSTP);
 375                         f_print(fout, "SVCXPRT *%s);\n", TRANSP);
 376                 }
 377                 f_print(fout, "\n");
 378                 if (storage != NULL) {
 379                         f_print(fout, "%s ", storage);
 380                 }
 381                 f_print(fout, "void\n");
 382                 pvname(def->def_name, vp->vers_num);
 383
 384                 if (Cflag) {
 385                         f_print(fout, "(struct svc_req *%s, ", RQSTP);
 386                         f_print(fout, "SVCXPRT *%s)\n", TRANSP);
 387                 } else {
 388                         f_print(fout, "(%s, %s)\n", RQSTP, TRANSP);
 389                         f_print(fout, " struct svc_req *%s;\n", RQSTP);
 390                         f_print(fout, " SVCXPRT *%s;\n", TRANSP);
 391                 }
 392
 393                 f_print(fout, "{\n");
 394
 395                 filled = 0;
 396                 f_print(fout, "\tunion {\n");
 397                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 398                         if (proc->arg_num < 2) {        /* single argument */
 399                                 if (streq(proc->args.decls->decl.type,
 400                                         "void")) {
 401                                         continue;
 402                                 }
 403                                 filled = 1;
 404                                 f_print(fout, "\t\t");
 405                                 ptype(proc->args.decls->decl.prefix,
 406                                     proc->args.decls->decl.type, 0);
 407                                 pvname(proc->proc_name, vp->vers_num);
 408                                 f_print(fout, "_arg;\n");
 409
 410                         } else {
 411                                 filled = 1;
 412                                 f_print(fout, "\t\t%s", proc->args.argname);
 413                                 f_print(fout, " ");
 414                                 pvname(proc->proc_name, vp->vers_num);
 415                                 f_print(fout, "_arg;\n");
 416                         }
 417                 }
 418                 if (!filled) {
 419                         f_print(fout, "\t\tint fill;\n");
 420                 }
 421                 f_print(fout, "\t} %s;\n", ARG);
 422                 f_print(fout, "\tchar *%s;\n", RESULT);
 423
 424                 if (Cflag) {
 425                         f_print(fout, "\txdrproc_t xdr_%s, xdr_%s;\n", ARG, RESULT);
 426                         f_print(fout,
 427                             "\tchar *(*%s)(char *, struct svc_req *);\n",
 428                             ROUTINE);
 429                 } else {
 430                         f_print(fout, "\tbool_t (*xdr_%s)(), (*xdr_%s)();\n", ARG, RESULT);
 431                         f_print(fout, "\tchar *(*%s)();\n", ROUTINE);
 432                 }
 433
 434                 f_print(fout, "\n");
 435
 436                 if (callerflag)
 437                         f_print(fout, "\tcaller = transp;\n");  /* EVAS */
 438                 if (timerflag)
 439                         f_print(fout, "\t_rpcsvcdirty = 1;\n");
 440                 f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP);
 441                 if (!nullproc(vp->procs)) {
 442                         f_print(fout, "\tcase NULLPROC:\n");
 443                         f_print(fout,
 444                             "\t\t(void) svc_sendreply(%s, (xdrproc_t) xdr_void, (char *)NULL);\n",
 445                             TRANSP);
 446                         print_return("\t\t");
 447                         f_print(fout, "\n");
 448                 }
 449                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 450                         f_print(fout, "\tcase %s:\n", proc->proc_name);
 451                         if (proc->arg_num < 2) {        /* single argument */
 452                                 p_xdrfunc(ARG, proc->args.decls->decl.type);
 453                         } else {
 454                                 p_xdrfunc(ARG, proc->args.argname);
 455                         }
 456                         p_xdrfunc(RESULT, proc->res_type);
 457                         if (Cflag)
 458                                 f_print(fout,
 459                                     "\t\t%s = (char *(*)(char *, struct svc_req *)) ",
 460                                     ROUTINE);
 461                         else
 462                                 f_print(fout, "\t\t%s = (char *(*)()) ", ROUTINE);
 463
 464                         if (newstyle) { /* new style: calls internal routine */
 465                                 f_print(fout, "_");
 466                         }
 467                         if (!newstyle)
 468                                 pvname_svc(proc->proc_name, vp->vers_num);
 469                         else
 470                                 pvname(proc->proc_name, vp->vers_num);
 471                         f_print(fout, ";\n");
 472                         f_print(fout, "\t\tbreak;\n\n");
 473                 }
 474                 f_print(fout, "\tdefault:\n");
 475                 printerr("noproc", TRANSP);
 476                 print_return("\t\t");
 477                 f_print(fout, "\t}\n");
 478
 479                 f_print(fout, "\t(void) memset((char *)&%s, 0, sizeof (%s));\n", ARG, ARG);
 480                 printif("getargs", TRANSP, "(caddr_t) &", ARG);
 481                 printerr("decode", TRANSP);
 482                 print_return("\t\t");
 483                 f_print(fout, "\t}\n");
 484
 485                 if (Cflag)
 486                         f_print(fout, "\t%s = (*%s)((char *)&%s, %s);\n",
 487                             RESULT, ROUTINE, ARG, RQSTP);
 488                 else
 489                         f_print(fout, "\t%s = (*%s)(&%s, %s);\n",
 490                             RESULT, ROUTINE, ARG, RQSTP);
 491                 f_print(fout,
 492                     "\tif (%s != NULL && !svc_sendreply(%s, (xdrproc_t) xdr_%s, %s)) {\n",
 493                     RESULT, TRANSP, RESULT, RESULT);
 494                 printerr("systemerr", TRANSP);
 495                 f_print(fout, "\t}\n");
 496
 497                 printif("freeargs", TRANSP, "(caddr_t) &", ARG);
 498                 (void) sprintf(_errbuf, "unable to free arguments");
 499                 print_err_message("\t\t");
 500                 f_print(fout, "\t\texit(1);\n");
 501                 f_print(fout, "\t}\n");
 502                 print_return("\t");
 503                 f_print(fout, "}\n");
 504         }
 505 }
 506
 507 static void
 508 printerr(err, transp)
 509         char   *err;
 510         char   *transp;
 511 {
 512         f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp);
 513 }
 514
 515 static void
 516 printif(proc, transp, prefix, arg)
 517         char   *proc;
 518         char   *transp;
 519         char   *prefix;
 520         char   *arg;
 521 {
 522         f_print(fout, "\tif (!svc_%s(%s, xdr_%s, %s%s)) {\n",
 523             proc, transp, arg, prefix, arg);
 524 }
 525
 526 int
 527 nullproc(proc)
 528         proc_list *proc;
 529 {
 530         for (; proc != NULL; proc = proc->next) {
 531                 if (streq(proc->proc_num, "0")) {
 532                         return (1);
 533                 }
 534         }
 535         return (0);
 536 }
 537
 538 static void
 539 write_inetmost(infile)
 540         char   *infile;
 541 {
 542         f_print(fout, "\tSVCXPRT *%s = NULL;\n", TRANSP);
 543         f_print(fout, "\tint sock;\n");
 544         f_print(fout, "\tint proto = 0;\n");
 545         f_print(fout, "\tstruct sockaddr_in saddr;\n");
 546         f_print(fout, "\tint asize = sizeof (saddr);\n");
 547         f_print(fout, "\n");
 548         f_print(fout,
 549             "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n");
 550         f_print(fout, "\t\tint ssize = sizeof (int);\n\n");
 551         f_print(fout, "\t\tif (saddr.sin_family != AF_INET)\n");
 552         f_print(fout, "\t\t\texit(1);\n");
 553         f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n");
 554         f_print(fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n");
 555         f_print(fout, "\t\t\texit(1);\n");
 556         f_print(fout, "\t\tsock = 0;\n");
 557         f_print(fout, "\t\t_rpcpmstart = 1;\n");
 558         f_print(fout, "\t\tproto = 0;\n");
 559         open_log_file(infile, "\t\t");
 560         f_print(fout, "\t} else {\n");
 561         write_rpc_svc_fg(infile, "\t\t");
 562         f_print(fout, "\t\tsock = RPC_ANYSOCK;\n");
 563         print_pmapunset("\t\t");
 564         f_print(fout, "\t}\n");
 565 }
 566
 567 static void
 568 print_return(space)
 569         char   *space;
 570 {
 571         if (exitnow)
 572                 f_print(fout, "%sexit(0);\n", space);
 573         else {
 574                 if (timerflag)
 575                         f_print(fout, "%s_rpcsvcdirty = 0;\n", space);
 576                 f_print(fout, "%sreturn;\n", space);
 577         }
 578 }
 579
 580 static void
 581 print_pmapunset(space)
 582         char   *space;
 583 {
 584         list   *l;
 585         definition *def;
 586         version_list *vp;
 587
 588         for (l = defined; l != NULL; l = l->next) {
 589                 def = (definition *) l->val;
 590                 if (def->def_kind == DEF_PROGRAM) {
 591                         for (vp = def->def.pr.versions; vp != NULL;
 592                             vp = vp->next) {
 593                                 f_print(fout, "%s(void) pmap_unset(%s, %s);\n",
 594                                     space, def->def_name, vp->vers_name);
 595                         }
 596                 }
 597         }
 598 }
 599
 600 static void
 601 print_err_message(space)
 602         char   *space;
 603 {
 604         if (logflag)
 605                 f_print(fout, "%ssyslog(LOG_ERR, \"%%s\", \"%s\");\n", space, _errbuf);
 606         else
 607                 if (inetdflag || pmflag)
 608                         f_print(fout, "%s_msgout(\"%s\");\n", space, _errbuf);
 609                 else
 610                         f_print(fout, "%sfprintf(stderr, \"%%s\", \"%s\");\n", space, _errbuf);
 611 }
 612 /*
 613  * Write the server auxiliary function ( _msgout, timeout)
 614  */
 615 void
 616 write_svc_aux(nomain)
 617         int     nomain;
 618 {
 619         if (!logflag)
 620                 write_msg_out();
 621         if (!nomain)
 622                 write_timeout_func();
 623         if (callerflag)         /* EVAS */
 624                 write_caller_func();    /* EVAS */
 625 }
 626 /*
 627  * Write the _msgout function
 628  */
 629 void
 630 write_msg_out()
 631 {
 632         f_print(fout, "\n");
 633         f_print(fout, "static\n");
 634         if (!Cflag) {
 635                 f_print(fout, "void _msgout(msg)\n");
 636                 f_print(fout, "\tchar *msg;\n");
 637         } else {
 638                 f_print(fout, "void _msgout(char* msg)\n");
 639         }
 640         f_print(fout, "{\n");
 641         f_print(fout, "#ifdef RPC_SVC_FG\n");
 642         if (inetdflag || pmflag)
 643                 f_print(fout, "\tif (_rpcpmstart)\n");
 644         f_print(fout, "\t\tsyslog(LOG_ERR, \"%%s\", msg);\n");
 645         f_print(fout, "\telse\n");
 646         f_print(fout, "\t\t(void) fprintf(stderr, \"%%s\\n\", msg);\n");
 647         f_print(fout, "#else\n");
 648         f_print(fout, "\tsyslog(LOG_ERR, \"%%s\", msg);\n");
 649         f_print(fout, "#endif\n");
 650         f_print(fout, "}\n");
 651 }
 652 /*
 653  * Write the timeout function
 654  */
 655 static void
 656 write_timeout_func()
 657 {
 658         if (!timerflag)
 659                 return;
 660         if (Cflag) {
 661                 f_print(fout, "\n");
 662                 f_print(fout, "static void closedown(void);\n");
 663         }
 664         f_print(fout, "\n");
 665         f_print(fout, "static void\n");
 666         f_print(fout, "closedown()\n");
 667         f_print(fout, "{\n");
 668         f_print(fout, "\tif (_rpcsvcdirty == 0) {\n");
 669         f_print(fout, "\t\textern fd_set svc_fdset;\n");
 670         f_print(fout, "\t\tstatic int size;\n");
 671         f_print(fout, "\t\tint i, openfd;\n");
 672         if (tirpcflag && pmflag) {
 673                 f_print(fout, "\t\tstruct t_info tinfo;\n\n");
 674                 f_print(fout, "\t\tif (!t_getinfo(0, &tinfo) && (tinfo.servtype == T_CLTS))\n");
 675         } else {
 676                 f_print(fout, "\n\t\tif (_rpcfdtype == SOCK_DGRAM)\n");
 677         }
 678         f_print(fout, "\t\t\texit(0);\n");
 679         f_print(fout, "\t\tif (size == 0) {\n");
 680         if (tirpcflag) {
 681                 f_print(fout, "\t\t\tstruct rlimit rl;\n\n");
 682                 f_print(fout, "\t\t\trl.rlim_max = 0;\n");
 683                 f_print(fout, "\t\t\tgetrlimit(RLIMIT_NOFILE, &rl);\n");
 684                 f_print(fout, "\t\t\tif ((size = rl.rlim_max) == 0)\n");
 685                 f_print(fout, "\t\t\t\treturn;\n");
 686         } else {
 687                 f_print(fout, "\t\t\tsize = getdtablesize();\n");
 688         }
 689         f_print(fout, "\t\t}\n");
 690         f_print(fout, "\t\tfor (i = 0, openfd = 0; i < size && openfd < 2; i++)\n");
 691         f_print(fout, "\t\t\tif (FD_ISSET(i, &svc_fdset))\n");
 692         f_print(fout, "\t\t\t\topenfd++;\n");
 693         f_print(fout, "\t\tif (openfd <= (_rpcpmstart?0:1))\n");
 694         f_print(fout, "\t\t\texit(0);\n");
 695         f_print(fout, "\t}\n");
 696         f_print(fout, "\t(void) alarm(_RPCSVC_CLOSEDOWN);\n");
 697         f_print(fout, "}\n");
 698 }
 699
 700 static void
 701 write_caller_func()
 702 {                               /* EVAS */
 703 #define P(s)    f_print(fout, s);
 704
 705         P("\n");
 706         P("char *svc_caller()\n");
 707         P("{\n");
 708         P("     struct sockaddr_in actual;\n");
 709         P("     struct hostent *hp;\n");
 710         P("     static struct in_addr prev;\n");
 711         P("     static char cname[128];\n\n");
 712
 713         P("     actual = *svc_getcaller(caller);\n\n");
 714
 715         P("     if (memcmp((char *)&actual.sin_addr, (char *)&prev,\n");
 716         P("              sizeof(struct in_addr)) == 0)\n");
 717         P("             return (cname);\n\n");
 718
 719         P("     prev = actual.sin_addr;\n\n");
 720
 721         P("     hp = gethostbyaddr((char *) &actual.sin_addr, sizeof(actual.sin_addr), AF_INET);\n");
 722         P("     if (hp == NULL) {                       /* dummy one up */\n");
 723         P("             extern char *inet_ntoa();\n");
 724         P("             strcpy(cname, inet_ntoa(actual.sin_addr));\n");
 725         P("     } else {\n");
 726         P("             strcpy(cname, hp->h_name);\n");
 727         P("     }\n\n");
 728
 729         P("     return (cname);\n");
 730         P("}\n");
 731
 732 #undef P
 733 }
 734 /*
 735  * Write the most of port monitor support
 736  */
 737 static void
 738 write_pm_most(infile, netflag)
 739         char   *infile;
 740         int     netflag;
 741 {
 742         list   *l;
 743         definition *def;
 744         version_list *vp;
 745
 746         f_print(fout, "\tif (!ioctl(0, I_LOOK, mname) &&\n");
 747         f_print(fout, "\t\t(!strcmp(mname, \"sockmod\") ||");
 748         f_print(fout, " !strcmp(mname, \"timod\"))) {\n");
 749         f_print(fout, "\t\tchar *netid;\n");
 750         if (!netflag) {         /* Not included by -n option */
 751                 f_print(fout, "\t\tstruct netconfig *nconf = NULL;\n");
 752                 f_print(fout, "\t\tSVCXPRT *%s;\n", TRANSP);
 753         }
 754         if (timerflag)
 755                 f_print(fout, "\t\tint pmclose;\n");
 756 /* not necessary, defined in /usr/include/stdlib */
 757 /*      f_print(fout, "\t\textern char *getenv();\n");*/
 758         f_print(fout, "\n");
 759         f_print(fout, "\t\t_rpcpmstart = 1;\n");
 760         if (logflag)
 761                 open_log_file(infile, "\t\t");
 762         f_print(fout, "\t\tif ((netid = getenv(\"NLSPROVIDER\")) == NULL) {\n");
 763         sprintf(_errbuf, "cannot get transport name");
 764         print_err_message("\t\t\t");
 765         f_print(fout, "\t\t} else if ((nconf = getnetconfigent(netid)) == NULL) {\n");
 766         sprintf(_errbuf, "cannot get transport info");
 767         print_err_message("\t\t\t");
 768         f_print(fout, "\t\t}\n");
 769         /*
 770          * A kludgy support for inetd services. Inetd only works with
 771          * sockmod, and RPC works only with timod, hence all this jugglery
 772          */
 773         f_print(fout, "\t\tif (strcmp(mname, \"sockmod\") == 0) {\n");
 774         f_print(fout, "\t\t\tif (ioctl(0, I_POP, 0) || ioctl(0, I_PUSH, \"timod\")) {\n");
 775         sprintf(_errbuf, "could not get the right module");
 776         print_err_message("\t\t\t\t");
 777         f_print(fout, "\t\t\t\texit(1);\n");
 778         f_print(fout, "\t\t\t}\n");
 779         f_print(fout, "\t\t}\n");
 780         if (timerflag)
 781                 f_print(fout, "\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n");
 782         f_print(fout, "\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) == NULL) {\n",
 783             TRANSP);
 784         sprintf(_errbuf, "cannot create server handle");
 785         print_err_message("\t\t\t");
 786         f_print(fout, "\t\t\texit(1);\n");
 787         f_print(fout, "\t\t}\n");
 788         f_print(fout, "\t\tif (nconf)\n");
 789         f_print(fout, "\t\t\tfreenetconfigent(nconf);\n");
 790         for (l = defined; l != NULL; l = l->next) {
 791                 def = (definition *) l->val;
 792                 if (def->def_kind != DEF_PROGRAM) {
 793                         continue;
 794                 }
 795                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 796                         f_print(fout,
 797                             "\t\tif (!svc_reg(%s, %s, %s, ",
 798                             TRANSP, def->def_name, vp->vers_name);
 799                         pvname(def->def_name, vp->vers_num);
 800                         f_print(fout, ", 0)) {\n");
 801                         (void) sprintf(_errbuf, "unable to register (%s, %s).",
 802                             def->def_name, vp->vers_name);
 803                         print_err_message("\t\t\t");
 804                         f_print(fout, "\t\t\texit(1);\n");
 805                         f_print(fout, "\t\t}\n");
 806                 }
 807         }
 808         if (timerflag) {
 809                 f_print(fout, "\t\tif (pmclose) {\n");
 810                 f_print(fout, "\t\t\t(void) signal(SIGALRM, %s closedown);\n",
 811                     Cflag ? "(SIG_PF)" : "(void(*)())");
 812                 f_print(fout, "\t\t\t(void) alarm(_RPCSVC_CLOSEDOWN);\n");
 813                 f_print(fout, "\t\t}\n");
 814         }
 815         f_print(fout, "\t\tsvc_run();\n");
 816         f_print(fout, "\t\texit(1);\n");
 817         f_print(fout, "\t\t/* NOTREACHED */\n");
 818         f_print(fout, "\t}\n");
 819 }
 820 /*
 821  * Support for backgrounding the server if self started.
 822  */
 823 static void
 824 write_rpc_svc_fg(infile, sp)
 825         char   *infile;
 826         char   *sp;
 827 {
 828         f_print(fout, "#ifndef RPC_SVC_FG\n");
 829         f_print(fout, "%sint size;\n", sp);
 830         if (tirpcflag)
 831                 f_print(fout, "%sstruct rlimit rl;\n", sp);
 832         if (inetdflag)
 833                 f_print(fout, "%sint pid, i;\n\n", sp);
 834         f_print(fout, "%spid = fork();\n", sp);
 835         f_print(fout, "%sif (pid < 0) {\n", sp);
 836         f_print(fout, "%s\tperror(\"cannot fork\");\n", sp);
 837         f_print(fout, "%s\texit(1);\n", sp);
 838         f_print(fout, "%s}\n", sp);
 839         f_print(fout, "%sif (pid)\n", sp);
 840         f_print(fout, "%s\texit(0);\n", sp);
 841         /* get number of file descriptors */
 842         if (tirpcflag) {
 843                 f_print(fout, "%srl.rlim_max = 0;\n", sp);
 844                 f_print(fout, "%sgetrlimit(RLIMIT_NOFILE, &rl);\n", sp);
 845                 f_print(fout, "%sif ((size = rl.rlim_max) == 0)\n", sp);
 846                 f_print(fout, "%s\texit(1);\n", sp);
 847         } else {
 848                 f_print(fout, "%ssize = getdtablesize();\n", sp);
 849         }
 850
 851         f_print(fout, "%sfor (i = 0; i < size; i++)\n", sp);
 852         f_print(fout, "%s\t(void) close(i);\n", sp);
 853         /* Redirect stderr and stdout to console */
 854         f_print(fout, "%si = open(\"/dev/console\", 2);\n", sp);
 855         f_print(fout, "%s(void) dup2(i, 1);\n", sp);
 856         f_print(fout, "%s(void) dup2(i, 2);\n", sp);
 857         /* This removes control of the controlling terminal */
 858         if (tirpcflag)
 859                 f_print(fout, "%ssetsid();\n", sp);
 860         else {
 861                 f_print(fout, "%si = open(\"/dev/tty\", 2);\n", sp);
 862                 f_print(fout, "%sif (i >= 0) {\n", sp);
 863                 f_print(fout, "%s\t(void) ioctl(i, TIOCNOTTY, (char *)NULL);\n", sp);;
 864                 f_print(fout, "%s\t(void) close(i);\n", sp);
 865                 f_print(fout, "%s}\n", sp);
 866         }
 867         if (!logflag)
 868                 open_log_file(infile, sp);
 869         f_print(fout, "#endif\n");
 870         if (logflag)
 871                 open_log_file(infile, sp);
 872 }
 873
 874 static void
 875 open_log_file(infile, sp)
 876         char   *infile;
 877         char   *sp;
 878 {
 879         char   *s, *p;
 880
 881         s = strrchr(infile, '.');
 882         if (s)
 883                 *s = '\0';
 884         p = strrchr(infile, '/');
 885         if (p)
 886                 p++;
 887         else
 888                 p = infile;
 889         f_print(fout, "%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, p);
 890         if (s)
 891                 *s = '.';
 892 }
 893
 894 /*
 895  * write a registration for the given transport for Inetd
 896  */
 897 void
 898 write_inetd_register(transp)
 899         char   *transp;
 900 {
 901         list   *l;
 902         definition *def;
 903         version_list *vp;
 904         char   *sp;
 905         int     isudp;
 906         char    tmpbuf[32];
 907
 908         if (inetdflag)
 909                 sp = "\t";
 910         else
 911                 sp = "";
 912         if (streq(transp, "udp"))
 913                 isudp = 1;
 914         else
 915                 isudp = 0;
 916         f_print(fout, "\n");
 917         if (inetdflag) {
 918                 f_print(fout, "\tif ((_rpcfdtype == 0) || (_rpcfdtype == %s)) {\n",
 919                     isudp ? "SOCK_DGRAM" : "SOCK_STREAM");
 920         }
 921         if (inetdflag && streq(transp, "tcp")) {
 922                 f_print(fout, "%s\tif (_rpcpmstart)\n", sp);
 923
 924                 f_print(fout, "%s\t\t%s = svc%s_create(%s",
 925                     sp, TRANSP, "fd", inetdflag ? "sock" : "RPC_ANYSOCK");
 926                 if (!isudp)
 927                         f_print(fout, ", 0, 0");
 928                 f_print(fout, ");\n");
 929
 930                 f_print(fout, "%s\telse\n", sp);
 931
 932                 f_print(fout, "%s\t\t%s = svc%s_create(%s",
 933                     sp, TRANSP, transp, inetdflag ? "sock" : "RPC_ANYSOCK");
 934                 if (!isudp)
 935                         f_print(fout, ", 0, 0");
 936                 f_print(fout, ");\n");
 937
 938         } else {
 939                 f_print(fout, "%s\t%s = svc%s_create(%s",
 940                     sp, TRANSP, transp, inetdflag ? "sock" : "RPC_ANYSOCK");
 941                 if (!isudp)
 942                         f_print(fout, ", 0, 0");
 943                 f_print(fout, ");\n");
 944         }
 945         f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP);
 946         (void) sprintf(_errbuf, "cannot create %s service.", transp);
 947         (void) sprintf(tmpbuf, "%s\t\t", sp);
 948         print_err_message(tmpbuf);
 949         f_print(fout, "%s\t\texit(1);\n", sp);
 950         f_print(fout, "%s\t}\n", sp);
 951
 952         if (inetdflag) {
 953                 f_print(fout, "%s\tif (!_rpcpmstart)\n\t", sp);
 954                 f_print(fout, "%s\tproto = IPPROTO_%s;\n",
 955                     sp, isudp ? "UDP" : "TCP");
 956         }
 957         for (l = defined; l != NULL; l = l->next) {
 958                 def = (definition *) l->val;
 959                 if (def->def_kind != DEF_PROGRAM) {
 960                         continue;
 961                 }
 962                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 963                         f_print(fout, "%s\tif (!svc_register(%s, %s, %s, ",
 964                             sp, TRANSP, def->def_name, vp->vers_name);
 965                         pvname(def->def_name, vp->vers_num);
 966                         if (inetdflag)
 967                                 f_print(fout, ", proto)) {\n");
 968                         else
 969                                 f_print(fout, ", IPPROTO_%s)) {\n",
 970                                     isudp ? "UDP" : "TCP");
 971                         (void) sprintf(_errbuf, "unable to register (%s, %s, %s).",
 972                             def->def_name, vp->vers_name, transp);
 973                         print_err_message(tmpbuf);
 974                         f_print(fout, "%s\t\texit(1);\n", sp);
 975                         f_print(fout, "%s\t}\n", sp);
 976                 }
 977         }
 978         if (inetdflag)
 979                 f_print(fout, "\t}\n");
 980 }