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