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 const char RQSTP[] = "rqstp";
  47 static const char TRANSP[] = "transp";
  48 static const char ARG[] = "argument";
  49 static const char RESULT[] = "result";
  50 static const char ROUTINE[] = "local";
  51
  52 char _errbuf[256];              /* For all messages */
  53
  54 static void internal_proctype (const proc_list * plist);
  55 static void p_xdrfunc (const char *rname, const char *typename);
  56 static void write_real_program (const definition * def);
  57 static void write_program (const 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 (const 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     {
  97       const char *var_type;
  98 #ifdef __GNU_LIBRARY__
  99       /* WHY? */
 100       var_type = (nomain ? "extern" : "");
 101 #else
 102       var_type = (nomain ? "extern" : "static");
 103 #endif
 104       f_print (fout, "%s int _rpcpmstart;", var_type);
 105       f_print (fout, "\t\t/* Started by a port monitor ? */\n");
 106       f_print (fout, "%s int _rpcfdtype;", var_type);
 107       f_print (fout, "\t\t/* Whether Stream or Datagram ? */\n");
 108       if (timerflag)
 109         {
 110           f_print (fout, "%s int _rpcsvcdirty;", var_type);
 111           f_print (fout, "\t/* Still serving ? */\n");
 112         }
 113       write_svc_aux (nomain);
 114     }
 115   /* write out dispatcher and stubs */
 116   write_programs (nomain ? NULL : "static");
 117
 118   if (nomain)
 119     return;
 120
 121 #ifdef __GNU_LIBRARY__
 122   if (Cflag)
 123     f_print (fout, "\nint\nmain(int argc, char **argv)\n");
 124   else
 125     {
 126       f_print (fout, "\nint\nmain(argc, argv)\n");
 127       f_print (fout, "\tint argc;\n");
 128       f_print (fout, "\tchar **argv;\n");
 129     }
 130 #else
 131   f_print (fout, "\nmain()\n");
 132 #endif
 133   f_print (fout, "{\n");
 134   if (inetdflag)
 135     {
 136       write_inetmost (infile);  /* Includes call to write_rpc_svc_fg() */
 137     }
 138   else
 139     {
 140       if (tirpcflag)
 141         {
 142           if (netflag)
 143             {
 144               f_print (fout, "\tregister SVCXPRT *%s;\n", TRANSP);
 145               f_print (fout, "\tstruct netconfig *nconf = NULL;\n");
 146             }
 147           f_print (fout, "\tpid_t pid;\n");
 148           f_print (fout, "\tint i;\n");
 149           f_print (fout, "\tchar mname[FMNAMESZ + 1];\n\n");
 150           write_pm_most (infile, netflag);
 151           f_print (fout, "\telse {\n");
 152           write_rpc_svc_fg (infile, "\t\t");
 153           f_print (fout, "\t}\n");
 154         }
 155       else
 156         {
 157           f_print (fout, "\tregister SVCXPRT *%s;\n", TRANSP);
 158           f_print (fout, "\n");
 159           print_pmapunset ("\t");
 160         }
 161     }
 162
 163   if (logflag && !inetdflag)
 164     {
 165       open_log_file (infile, "\t");
 166     }
 167 }
 168
 169 /*
 170  * write a registration for the given transport
 171  */
 172 void
 173 write_netid_register (const char *transp)
 174 {
 175   list *l;
 176   definition *def;
 177   version_list *vp;
 178   const char *sp;
 179   char tmpbuf[32];
 180
 181   sp = "";
 182   f_print (fout, "\n");
 183   f_print (fout, "%s\tnconf = getnetconfigent(\"%s\");\n", sp, transp);
 184   f_print (fout, "%s\tif (nconf == NULL) {\n", sp);
 185   (void) sprintf (_errbuf, "cannot find %s netid.", transp);
 186   sprintf (tmpbuf, "%s\t\t", sp);
 187   print_err_message (tmpbuf);
 188   f_print (fout, "%s\t\texit(1);\n", sp);
 189   f_print (fout, "%s\t}\n", sp);
 190   f_print (fout, "%s\t%s = svc_tli_create(RPC_ANYFD, nconf, 0, 0, 0);\n",
 191            sp, TRANSP /*, transp *//* ?!?... */ );
 192   f_print (fout, "%s\tif (%s == NULL) {\n", sp, TRANSP);
 193   (void) sprintf (_errbuf, "cannot create %s service.", transp);
 194   print_err_message (tmpbuf);
 195   f_print (fout, "%s\t\texit(1);\n", sp);
 196   f_print (fout, "%s\t}\n", sp);
 197
 198   for (l = defined; l != NULL; l = l->next)
 199     {
 200       def = (definition *) l->val;
 201       if (def->def_kind != DEF_PROGRAM)
 202         {
 203           continue;
 204         }
 205       for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
 206         {
 207           f_print (fout,
 208                    "%s\t(void) rpcb_unset(%s, %s, nconf);\n",
 209                    sp, def->def_name, vp->vers_name);
 210           f_print (fout,
 211                    "%s\tif (!svc_reg(%s, %s, %s, ",
 212                    sp, TRANSP, def->def_name, vp->vers_name);
 213           pvname (def->def_name, vp->vers_num);
 214           f_print (fout, ", nconf)) {\n");
 215           (void) sprintf (_errbuf, "unable to register (%s, %s, %s).",
 216                           def->def_name, vp->vers_name, transp);
 217           print_err_message (tmpbuf);
 218           f_print (fout, "%s\t\texit(1);\n", sp);
 219           f_print (fout, "%s\t}\n", sp);
 220         }
 221     }
 222   f_print (fout, "%s\tfreenetconfigent(nconf);\n", sp);
 223 }
 224
 225 /*
 226  * write a registration for the given transport for TLI
 227  */
 228 void
 229 write_nettype_register (const char *transp)
 230 {
 231   list *l;
 232   definition *def;
 233   version_list *vp;
 234
 235   for (l = defined; l != NULL; l = l->next)
 236     {
 237       def = (definition *) l->val;
 238       if (def->def_kind != DEF_PROGRAM)
 239         {
 240           continue;
 241         }
 242       for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
 243         {
 244           f_print (fout, "\tif (!svc_create(");
 245           pvname (def->def_name, vp->vers_num);
 246           f_print (fout, ", %s, %s, \"%s\")) {\n ",
 247                    def->def_name, vp->vers_name, transp);
 248           (void) sprintf (_errbuf,
 249                           "unable to create (%s, %s) for %s.",
 250                           def->def_name, vp->vers_name, transp);
 251           print_err_message ("\t\t");
 252           f_print (fout, "\t\texit(1);\n");
 253           f_print (fout, "\t}\n");
 254         }
 255     }
 256 }
 257
 258 /*
 259  * write the rest of the service
 260  */
 261 void
 262 write_rest (void)
 263 {
 264   f_print (fout, "\n");
 265   if (inetdflag)
 266     {
 267       f_print (fout, "\tif (%s == (SVCXPRT *)NULL) {\n", TRANSP);
 268       (void) sprintf (_errbuf, "could not create a handle");
 269       print_err_message ("\t\t");
 270       f_print (fout, "\t\texit(1);\n");
 271       f_print (fout, "\t}\n");
 272       if (timerflag)
 273         {
 274           f_print (fout, "\tif (_rpcpmstart) {\n");
 275           f_print (fout,
 276                    "\t\t(void) signal(SIGALRM, %s closedown);\n",
 277                    Cflag ? "(SIG_PF)" : "(void(*)())");
 278           f_print (fout, "\t\t(void) alarm(_RPCSVC_CLOSEDOWN);\n");
 279           f_print (fout, "\t}\n");
 280         }
 281     }
 282   f_print (fout, "\tsvc_run();\n");
 283   (void) sprintf (_errbuf, "svc_run returned");
 284   print_err_message ("\t");
 285   f_print (fout, "\texit(1);\n");
 286   f_print (fout, "\t/* NOTREACHED */\n");
 287   f_print (fout, "}\n");
 288 }
 289
 290 void
 291 write_programs (const char *storage)
 292 {
 293   list *l;
 294   definition *def;
 295
 296   /* write out stubs for procedure  definitions */
 297   for (l = defined; l != NULL; l = l->next)
 298     {
 299       def = (definition *) l->val;
 300       if (def->def_kind == DEF_PROGRAM)
 301         {
 302           write_real_program (def);
 303         }
 304     }
 305
 306   /* write out dispatcher for each program */
 307   for (l = defined; l != NULL; l = l->next)
 308     {
 309       def = (definition *) l->val;
 310       if (def->def_kind == DEF_PROGRAM)
 311         {
 312           write_program (def, storage);
 313         }
 314     }
 315
 316
 317 }
 318
 319 /* write out definition of internal function (e.g. _printmsg_1(...))
 320    which calls server's defintion of actual function (e.g. printmsg_1(...)).
 321    Unpacks single user argument of printmsg_1 to call-by-value format
 322    expected by printmsg_1. */
 323 static void
 324 write_real_program (const definition * def)
 325 {
 326   version_list *vp;
 327   proc_list *proc;
 328   decl_list *l;
 329
 330   if (!newstyle)
 331     return;                     /* not needed for old style */
 332   for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
 333     {
 334       for (proc = vp->procs; proc != NULL; proc = proc->next)
 335         {
 336           f_print (fout, "\n");
 337           internal_proctype (proc);
 338           f_print (fout, "\n_");
 339           pvname (proc->proc_name, vp->vers_num);
 340           if (Cflag)
 341             {
 342               f_print (fout, "(");
 343               /* arg name */
 344               if (proc->arg_num > 1)
 345                 f_print (fout, proc->args.argname);
 346               else
 347                 ptype (proc->args.decls->decl.prefix,
 348                        proc->args.decls->decl.type, 0);
 349               f_print (fout, " *argp, struct svc_req *%s)\n",
 350                        RQSTP);
 351             }
 352           else
 353             {
 354               f_print (fout, "(argp, %s)\n", RQSTP);
 355               /* arg name */
 356               if (proc->arg_num > 1)
 357                 f_print (fout, "\t%s *argp;\n", proc->args.argname);
 358               else
 359                 {
 360                   f_print (fout, "\t");
 361                   ptype (proc->args.decls->decl.prefix,
 362                          proc->args.decls->decl.type, 0);
 363                   f_print (fout, " *argp;\n");
 364                 }
 365               f_print (fout, "  struct svc_req *%s;\n", RQSTP);
 366             }
 367
 368           f_print (fout, "{\n");
 369           f_print (fout, "\treturn(");
 370           if (Cflag)
 371             pvname_svc (proc->proc_name, vp->vers_num);
 372           else
 373             pvname (proc->proc_name, vp->vers_num);
 374           f_print (fout, "(");
 375           if (proc->arg_num < 2)
 376             {                   /* single argument */
 377               if (!streq (proc->args.decls->decl.type, "void"))
 378                 f_print (fout, "*argp, ");      /* non-void */
 379             }
 380           else
 381             {
 382               for (l = proc->args.decls; l != NULL; l = l->next)
 383                 f_print (fout, "argp->%s, ", l->decl.name);
 384             }
 385           f_print (fout, "%s));\n}\n", RQSTP);
 386         }
 387     }
 388 }
 389
 390 static void
 391 write_program (const definition * def, const char *storage)
 392 {
 393   version_list *vp;
 394   proc_list *proc;
 395   int filled;
 396
 397   for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
 398     {
 399       f_print (fout, "\n");
 400       if (storage != NULL)
 401         {
 402           f_print (fout, "%s ", storage);
 403         }
 404       f_print (fout, "void\n");
 405       pvname (def->def_name, vp->vers_num);
 406
 407       if (Cflag)
 408         {
 409           f_print (fout, "(struct svc_req *%s, ", RQSTP);
 410           f_print (fout, "register SVCXPRT *%s)\n", TRANSP);
 411         }
 412       else
 413         {
 414           f_print (fout, "(%s, %s)\n", RQSTP, TRANSP);
 415           f_print (fout, "      struct svc_req *%s;\n", RQSTP);
 416           f_print (fout, "      register SVCXPRT *%s;\n", TRANSP);
 417         }
 418
 419       f_print (fout, "{\n");
 420
 421       filled = 0;
 422       f_print (fout, "\tunion {\n");
 423       for (proc = vp->procs; proc != NULL; proc = proc->next)
 424         {
 425           if (proc->arg_num < 2)
 426             {                   /* single argument */
 427               if (streq (proc->args.decls->decl.type,
 428                          "void"))
 429                 {
 430                   continue;
 431                 }
 432               filled = 1;
 433               f_print (fout, "\t\t");
 434               ptype (proc->args.decls->decl.prefix,
 435                      proc->args.decls->decl.type, 0);
 436               pvname (proc->proc_name, vp->vers_num);
 437               f_print (fout, "_arg;\n");
 438
 439             }
 440           else
 441             {
 442               filled = 1;
 443               f_print (fout, "\t\t%s", proc->args.argname);
 444               f_print (fout, " ");
 445               pvname (proc->proc_name, vp->vers_num);
 446               f_print (fout, "_arg;\n");
 447             }
 448         }
 449       if (!filled)
 450         {
 451           f_print (fout, "\t\tint fill;\n");
 452         }
 453       f_print (fout, "\t} %s;\n", ARG);
 454       f_print (fout, "\tchar *%s;\n", RESULT);
 455
 456       if (Cflag)
 457         {
 458           f_print (fout, "\txdrproc_t xdr_%s, xdr_%s;\n", ARG, RESULT);
 459           f_print (fout,
 460                    "\tchar *(*%s)(char *, struct svc_req *);\n",
 461                    ROUTINE);
 462         }
 463       else
 464         {
 465           f_print (fout, "\tbool_t (*xdr_%s)(), (*xdr_%s)();\n", ARG, RESULT);
 466           f_print (fout, "\tchar *(*%s)();\n", ROUTINE);
 467         }
 468
 469       f_print (fout, "\n");
 470
 471       if (timerflag)
 472         f_print (fout, "\t_rpcsvcdirty = 1;\n");
 473       f_print (fout, "\tswitch (%s->rq_proc) {\n", RQSTP);
 474       if (!nullproc (vp->procs))
 475         {
 476           f_print (fout, "\tcase NULLPROC:\n");
 477           f_print (fout,
 478                    Cflag
 479                    ? "\t\t(void) svc_sendreply(%s, (xdrproc_t) xdr_void, (char *)NULL);\n"
 480                 : "\t\t(void) svc_sendreply(%s, xdr_void, (char *)NULL);\n",
 481                    TRANSP);
 482           print_return ("\t\t");
 483           f_print (fout, "\n");
 484         }
 485       for (proc = vp->procs; proc != NULL; proc = proc->next)
 486         {
 487           f_print (fout, "\tcase %s:\n", proc->proc_name);
 488           if (proc->arg_num < 2)
 489             {                   /* single argument */
 490               p_xdrfunc (ARG, proc->args.decls->decl.type);
 491             }
 492           else
 493             {
 494               p_xdrfunc (ARG, proc->args.argname);
 495             }
 496           p_xdrfunc (RESULT, proc->res_type);
 497           if (Cflag)
 498             f_print (fout,
 499                      "\t\t%s = (char *(*)(char *, struct svc_req *)) ",
 500                      ROUTINE);
 501           else
 502             f_print (fout, "\t\t%s = (char *(*)()) ", ROUTINE);
 503
 504           if (newstyle)
 505             {                   /* new style: calls internal routine */
 506               f_print (fout, "_");
 507             }
 508           if (Cflag && !newstyle)
 509             pvname_svc (proc->proc_name, vp->vers_num);
 510           else
 511             pvname (proc->proc_name, vp->vers_num);
 512           f_print (fout, ";\n");
 513           f_print (fout, "\t\tbreak;\n\n");
 514         }
 515       f_print (fout, "\tdefault:\n");
 516       printerr ("noproc", TRANSP);
 517       print_return ("\t\t");
 518       f_print (fout, "\t}\n");
 519
 520       f_print (fout, "\t(void) memset((char *)&%s, 0, sizeof (%s));\n", ARG, ARG);
 521       if (Cflag)
 522         printif ("getargs", TRANSP, "(caddr_t) &", ARG);
 523       else
 524         printif ("getargs", TRANSP, "&", ARG);
 525       printerr ("decode", TRANSP);
 526       print_return ("\t\t");
 527       f_print (fout, "\t}\n");
 528
 529       if (Cflag)
 530         f_print (fout, "\t%s = (*%s)((char *)&%s, %s);\n",
 531                  RESULT, ROUTINE, ARG, RQSTP);
 532       else
 533         f_print (fout, "\t%s = (*%s)(&%s, %s);\n",
 534                  RESULT, ROUTINE, ARG, RQSTP);
 535       f_print (fout,
 536                "\tif (%s != NULL && !svc_sendreply(%s, xdr_%s, %s)) {\n",
 537                RESULT, TRANSP, RESULT, RESULT);
 538       printerr ("systemerr", TRANSP);
 539       f_print (fout, "\t}\n");
 540
 541       if (Cflag)
 542         printif ("freeargs", TRANSP, "(caddr_t) &", ARG);
 543       else
 544         printif ("freeargs", TRANSP, "&", ARG);
 545       (void) sprintf (_errbuf, "unable to free arguments");
 546       print_err_message ("\t\t");
 547       f_print (fout, "\t\texit(1);\n");
 548       f_print (fout, "\t}\n");
 549       print_return ("\t");
 550       f_print (fout, "}\n");
 551     }
 552 }
 553
 554 static void
 555 printerr (const char *err, const char *transp)
 556 {
 557   f_print (fout, "\t\tsvcerr_%s(%s);\n", err, transp);
 558 }
 559
 560 static void
 561 printif (const char *proc, const char *transp, const char *prefix,
 562          const char *arg)
 563 {
 564   f_print (fout, "\tif (!svc_%s(%s, xdr_%s, %s%s)) {\n",
 565            proc, transp, arg, prefix, arg);
 566 }
 567
 568 int
 569 nullproc (const proc_list * proc)
 570 {
 571   for (; proc != NULL; proc = proc->next)
 572     {
 573       if (streq (proc->proc_num, "0"))
 574         {
 575           return (1);
 576         }
 577     }
 578   return (0);
 579 }
 580
 581 static void
 582 write_inetmost (const char *infile)
 583 {
 584   f_print (fout, "\tregister SVCXPRT *%s;\n", TRANSP);
 585   f_print (fout, "\tint sock;\n");
 586   f_print (fout, "\tint proto;\n");
 587   f_print (fout, "\tstruct sockaddr_in saddr;\n");
 588   f_print (fout, "\tint asize = sizeof (saddr);\n");
 589   f_print (fout, "\n");
 590   f_print (fout,
 591        "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n");
 592   f_print (fout, "\t\tint ssize = sizeof (int);\n\n");
 593   f_print (fout, "\t\tif (saddr.sin_family != AF_INET)\n");
 594   f_print (fout, "\t\t\texit(1);\n");
 595   f_print (fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n");
 596   f_print (fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n");
 597   f_print (fout, "\t\t\texit(1);\n");
 598   f_print (fout, "\t\tsock = 0;\n");
 599   f_print (fout, "\t\t_rpcpmstart = 1;\n");
 600   f_print (fout, "\t\tproto = 0;\n");
 601   open_log_file (infile, "\t\t");
 602   f_print (fout, "\t} else {\n");
 603   write_rpc_svc_fg (infile, "\t\t");
 604   f_print (fout, "\t\tsock = RPC_ANYSOCK;\n");
 605   print_pmapunset ("\t\t");
 606   f_print (fout, "\t}\n");
 607 }
 608
 609 static void
 610 print_return (const char *space)
 611 {
 612   if (exitnow)
 613     f_print (fout, "%sexit(0);\n", space);
 614   else
 615     {
 616       if (timerflag)
 617         f_print (fout, "%s_rpcsvcdirty = 0;\n", space);
 618       f_print (fout, "%sreturn;\n", space);
 619     }
 620 }
 621
 622 static void
 623 print_pmapunset (const char *space)
 624 {
 625   list *l;
 626   definition *def;
 627   version_list *vp;
 628
 629   for (l = defined; l != NULL; l = l->next)
 630     {
 631       def = (definition *) l->val;
 632       if (def->def_kind == DEF_PROGRAM)
 633         {
 634           for (vp = def->def.pr.versions; vp != NULL;
 635                vp = vp->next)
 636             {
 637               f_print (fout, "%s(void) pmap_unset(%s, %s);\n",
 638                        space, def->def_name, vp->vers_name);
 639             }
 640         }
 641     }
 642 }
 643
 644 static void
 645 print_err_message (const char *space)
 646 {
 647   if (logflag)
 648     f_print (fout, "%ssyslog(LOG_ERR, \"%s\");\n", space, _errbuf);
 649   else if (inetdflag || pmflag)
 650     f_print (fout, "%s_msgout(\"%s\");\n", space, _errbuf);
 651   else
 652     f_print (fout, "%sfprintf(stderr, \"%s\");\n", space, _errbuf);
 653 }
 654
 655 /*
 656  * Write the server auxiliary function ( _msgout, timeout)
 657  */
 658 void
 659 write_svc_aux (int nomain)
 660 {
 661   if (!logflag)
 662     write_msg_out ();
 663   if (!nomain)
 664     write_timeout_func ();
 665 }
 666
 667 /*
 668  * Write the _msgout function
 669  */
 670
 671 void
 672 write_msg_out (void)
 673 {
 674   f_print (fout, "\n");
 675   f_print (fout, "static\n");
 676   if (!Cflag)
 677     {
 678       f_print (fout, "void _msgout(msg)\n");
 679       f_print (fout, "\tchar *msg;\n");
 680     }
 681   else
 682     {
 683       f_print (fout, "void _msgout(char* msg)\n");
 684     }
 685   f_print (fout, "{\n");
 686   f_print (fout, "#ifdef RPC_SVC_FG\n");
 687   if (inetdflag || pmflag)
 688     f_print (fout, "\tif (_rpcpmstart)\n");
 689   f_print (fout, "\t\tsyslog(LOG_ERR, msg);\n");
 690   f_print (fout, "\telse\n");
 691   f_print (fout, "\t\t(void) fprintf(stderr, \"%%s\\n\", msg);\n");
 692   f_print (fout, "#else\n");
 693   f_print (fout, "\tsyslog(LOG_ERR, msg);\n");
 694   f_print (fout, "#endif\n");
 695   f_print (fout, "}\n");
 696 }
 697
 698 /*
 699  * Write the timeout function
 700  */
 701 static void
 702 write_timeout_func (void)
 703 {
 704   if (!timerflag)
 705     return;
 706   f_print (fout, "\n");
 707   f_print (fout, "static void\n");
 708 #ifdef __GNU_LIBRARY__
 709   if (Cflag)
 710     f_print (fout, "closedown(int sig)\n");
 711   else
 712     f_print (fout, "closedown(sig)\n\tint sig;\n");
 713 #else
 714   f_print (fout, "closedown()\n");
 715 #endif
 716   f_print (fout, "{\n");
 717 #ifdef __GNU_LIBRARY__
 718   f_print (fout, "\t(void) signal(sig, %s closedown);\n",
 719            Cflag ? "(SIG_PF)" : "(void(*)())");
 720 #endif
 721   f_print (fout, "\tif (_rpcsvcdirty == 0) {\n");
 722   f_print (fout, "\t\textern fd_set svc_fdset;\n");
 723   f_print (fout, "\t\tstatic int size;\n");
 724   f_print (fout, "\t\tint i, openfd;\n");
 725   if (tirpcflag && pmflag)
 726     {
 727       f_print (fout, "\t\tstruct t_info tinfo;\n\n");
 728       f_print (fout, "\t\tif (!t_getinfo(0, &tinfo) && (tinfo.servtype == T_CLTS))\n");
 729     }
 730   else
 731     {
 732       f_print (fout, "\n\t\tif (_rpcfdtype == SOCK_DGRAM)\n");
 733     }
 734   f_print (fout, "\t\t\texit(0);\n");
 735   f_print (fout, "\t\tif (size == 0) {\n");
 736   if (tirpcflag)
 737     {
 738       f_print (fout, "\t\t\tstruct rlimit rl;\n\n");
 739       f_print (fout, "\t\t\trl.rlim_max = 0;\n");
 740       f_print (fout, "\t\t\tgetrlimit(RLIMIT_NOFILE, &rl);\n");
 741       f_print (fout, "\t\t\tif ((size = rl.rlim_max) == 0)\n");
 742       f_print (fout, "\t\t\t\treturn;\n");
 743     }
 744   else
 745     {
 746       f_print (fout, "\t\t\tsize = getdtablesize();\n");
 747     }
 748   f_print (fout, "\t\t}\n");
 749   f_print (fout, "\t\tfor (i = 0, openfd = 0; i < size && openfd < 2; i++)\n");
 750   f_print (fout, "\t\t\tif (FD_ISSET(i, &svc_fdset))\n");
 751   f_print (fout, "\t\t\t\topenfd++;\n");
 752   f_print (fout, "\t\tif (openfd <= 1)\n");
 753   f_print (fout, "\t\t\texit(0);\n");
 754   f_print (fout, "\t}\n");
 755   f_print (fout, "\t(void) alarm(_RPCSVC_CLOSEDOWN);\n");
 756   f_print (fout, "}\n");
 757 }
 758
 759 /*
 760  * Write the most of port monitor support
 761  */
 762 static void
 763 write_pm_most (const char *infile, int netflag)
 764 {
 765   list *l;
 766   definition *def;
 767   version_list *vp;
 768
 769   f_print (fout, "\tif (!ioctl(0, I_LOOK, mname) &&\n");
 770   f_print (fout, "\t\t(!strcmp(mname, \"sockmod\") ||");
 771   f_print (fout, " !strcmp(mname, \"timod\"))) {\n");
 772   f_print (fout, "\t\tchar *netid;\n");
 773   if (!netflag)
 774     {                           /* Not included by -n option */
 775       f_print (fout, "\t\tstruct netconfig *nconf = NULL;\n");
 776       f_print (fout, "\t\tSVCXPRT *%s;\n", TRANSP);
 777     }
 778   if (timerflag)
 779     f_print (fout, "\t\tint pmclose;\n");
 780 /* not necessary, defined in /usr/include/stdlib */
 781 /*      f_print(fout, "\t\textern char *getenv();\n"); */
 782   f_print (fout, "\n");
 783   f_print (fout, "\t\t_rpcpmstart = 1;\n");
 784   if (logflag)
 785     open_log_file (infile, "\t\t");
 786   f_print (fout, "\t\tif ((netid = getenv(\"NLSPROVIDER\")) == NULL) {\n");
 787   sprintf (_errbuf, "cannot get transport name");
 788   print_err_message ("\t\t\t");
 789   f_print (fout, "\t\t} else if ((nconf = getnetconfigent(netid)) == NULL) {\n");
 790   sprintf (_errbuf, "cannot get transport info");
 791   print_err_message ("\t\t\t");
 792   f_print (fout, "\t\t}\n");
 793   /*
 794    * A kludgy support for inetd services. Inetd only works with
 795    * sockmod, and RPC works only with timod, hence all this jugglery
 796    */
 797   f_print (fout, "\t\tif (strcmp(mname, \"sockmod\") == 0) {\n");
 798   f_print (fout, "\t\t\tif (ioctl(0, I_POP, 0) || ioctl(0, I_PUSH, \"timod\")) {\n");
 799   sprintf (_errbuf, "could not get the right module");
 800   print_err_message ("\t\t\t\t");
 801   f_print (fout, "\t\t\t\texit(1);\n");
 802   f_print (fout, "\t\t\t}\n");
 803   f_print (fout, "\t\t}\n");
 804   if (timerflag)
 805     f_print (fout, "\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n");
 806   f_print (fout, "\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) == NULL) {\n",
 807            TRANSP);
 808   sprintf (_errbuf, "cannot create server handle");
 809   print_err_message ("\t\t\t");
 810   f_print (fout, "\t\t\texit(1);\n");
 811   f_print (fout, "\t\t}\n");
 812   f_print (fout, "\t\tif (nconf)\n");
 813   f_print (fout, "\t\t\tfreenetconfigent(nconf);\n");
 814   for (l = defined; l != NULL; l = l->next)
 815     {
 816       def = (definition *) l->val;
 817       if (def->def_kind != DEF_PROGRAM)
 818         {
 819           continue;
 820         }
 821       for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
 822         {
 823           f_print (fout,
 824                    "\t\tif (!svc_reg(%s, %s, %s, ",
 825                    TRANSP, def->def_name, vp->vers_name);
 826           pvname (def->def_name, vp->vers_num);
 827           f_print (fout, ", 0)) {\n");
 828           (void) sprintf (_errbuf, "unable to register (%s, %s).",
 829                           def->def_name, vp->vers_name);
 830           print_err_message ("\t\t\t");
 831           f_print (fout, "\t\t\texit(1);\n");
 832           f_print (fout, "\t\t}\n");
 833         }
 834     }
 835   if (timerflag)
 836     {
 837       f_print (fout, "\t\tif (pmclose) {\n");
 838       f_print (fout, "\t\t\t(void) signal(SIGALRM, %s closedown);\n",
 839                Cflag ? "(SIG_PF)" : "(void(*)())");
 840       f_print (fout, "\t\t\t(void) alarm(_RPCSVC_CLOSEDOWN);\n");
 841       f_print (fout, "\t\t}\n");
 842     }
 843   f_print (fout, "\t\tsvc_run();\n");
 844   f_print (fout, "\t\texit(1);\n");
 845   f_print (fout, "\t\t/* NOTREACHED */\n");
 846   f_print (fout, "\t}\n");
 847 }
 848
 849 /*
 850  * Support for backgrounding the server if self started.
 851  */
 852 static void
 853 write_rpc_svc_fg (const char *infile, const char *sp)
 854 {
 855   f_print (fout, "#ifndef RPC_SVC_FG\n");
 856   f_print (fout, "%sint size;\n", sp);
 857   if (tirpcflag)
 858     f_print (fout, "%sstruct rlimit rl;\n", sp);
 859   if (inetdflag)
 860     f_print (fout, "%sint pid, i;\n\n", sp);
 861   f_print (fout, "%spid = fork();\n", sp);
 862   f_print (fout, "%sif (pid < 0) {\n", sp);
 863   f_print (fout, "%s\tperror(\"cannot fork\");\n", sp);
 864   f_print (fout, "%s\texit(1);\n", sp);
 865   f_print (fout, "%s}\n", sp);
 866   f_print (fout, "%sif (pid)\n", sp);
 867   f_print (fout, "%s\texit(0);\n", sp);
 868   /* get number of file descriptors */
 869   if (tirpcflag)
 870     {
 871       f_print (fout, "%srl.rlim_max = 0;\n", sp);
 872       f_print (fout, "%sgetrlimit(RLIMIT_NOFILE, &rl);\n", sp);
 873       f_print (fout, "%sif ((size = rl.rlim_max) == 0)\n", sp);
 874       f_print (fout, "%s\texit(1);\n", sp);
 875     }
 876   else
 877     {
 878       f_print (fout, "%ssize = getdtablesize();\n", sp);
 879     }
 880
 881   f_print (fout, "%sfor (i = 0; i < size; i++)\n", sp);
 882   f_print (fout, "%s\t(void) close(i);\n", sp);
 883   /* Redirect stderr and stdout to console */
 884   f_print (fout, "%si = open(\"/dev/console\", 2);\n", sp);
 885   f_print (fout, "%s(void) dup2(i, 1);\n", sp);
 886   f_print (fout, "%s(void) dup2(i, 2);\n", sp);
 887   /* This removes control of the controlling terminal */
 888   if (tirpcflag)
 889     f_print (fout, "%ssetsid();\n", sp);
 890   else
 891     {
 892       f_print (fout, "%si = open(\"/dev/tty\", 2);\n", sp);
 893       f_print (fout, "%sif (i >= 0) {\n", sp);
 894       f_print (fout, "%s\t(void) ioctl(i, TIOCNOTTY, (char *)NULL);\n", sp);;
 895       f_print (fout, "%s\t(void) close(i);\n", sp);
 896       f_print (fout, "%s}\n", sp);
 897     }
 898   if (!logflag)
 899     open_log_file (infile, sp);
 900   f_print (fout, "#endif\n");
 901   if (logflag)
 902     open_log_file (infile, sp);
 903 }
 904
 905 static void
 906 open_log_file (const char *infile, const char *sp)
 907 {
 908   char *s;
 909
 910   s = strrchr (infile, '.');
 911   if (s)
 912     *s = '\0';
 913   f_print (fout, "%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, infile);
 914   if (s)
 915     *s = '.';
 916 }
 917
 918
 919
 920
 921 /*
 922  * write a registration for the given transport for Inetd
 923  */
 924 void
 925 write_inetd_register (const char *transp)
 926 {
 927   list *l;
 928   definition *def;
 929   version_list *vp;
 930   const char *sp;
 931   int isudp;
 932   char tmpbuf[32];
 933
 934   if (inetdflag)
 935     sp = "\t";
 936   else
 937     sp = "";
 938   if (streq (transp, "udp"))
 939     isudp = 1;
 940   else
 941     isudp = 0;
 942   f_print (fout, "\n");
 943   if (inetdflag)
 944     {
 945       f_print (fout, "\tif ((_rpcfdtype == 0) || (_rpcfdtype == %s)) {\n",
 946                isudp ? "SOCK_DGRAM" : "SOCK_STREAM");
 947     }
 948   f_print (fout, "%s\t%s = svc%s_create(%s",
 949            sp, TRANSP, transp, inetdflag ? "sock" : "RPC_ANYSOCK");
 950   if (!isudp)
 951     f_print (fout, ", 0, 0");
 952   f_print (fout, ");\n");
 953   f_print (fout, "%s\tif (%s == NULL) {\n", sp, TRANSP);
 954   (void) sprintf (_errbuf, "cannot create %s service.", transp);
 955   (void) sprintf (tmpbuf, "%s\t\t", sp);
 956   print_err_message (tmpbuf);
 957   f_print (fout, "%s\t\texit(1);\n", sp);
 958   f_print (fout, "%s\t}\n", sp);
 959
 960   if (inetdflag)
 961     {
 962       f_print (fout, "%s\tif (!_rpcpmstart)\n\t", sp);
 963       f_print (fout, "%s\tproto = IPPROTO_%s;\n",
 964                sp, isudp ? "UDP" : "TCP");
 965     }
 966   for (l = defined; l != NULL; l = l->next)
 967     {
 968       def = (definition *) l->val;
 969       if (def->def_kind != DEF_PROGRAM)
 970         {
 971           continue;
 972         }
 973       for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
 974         {
 975           f_print (fout, "%s\tif (!svc_register(%s, %s, %s, ",
 976                    sp, TRANSP, def->def_name, vp->vers_name);
 977           pvname (def->def_name, vp->vers_num);
 978           if (inetdflag)
 979             f_print (fout, ", proto)) {\n");
 980           else
 981             f_print (fout, ", IPPROTO_%s)) {\n",
 982                      isudp ? "UDP" : "TCP");
 983           (void) sprintf (_errbuf, "unable to register (%s, %s, %s).",
 984                           def->def_name, vp->vers_name, transp);
 985           print_err_message (tmpbuf);
 986           f_print (fout, "%s\t\texit(1);\n", sp);
 987           f_print (fout, "%s\t}\n", sp);
 988         }
 989     }
 990   if (inetdflag)
 991     f_print (fout, "\t}\n");
 992 }