/* Hacked by Peter Boyle for VML 2004 *//*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user or with the express written consent of
 * Sun Microsystems, Inc.
 *
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 *
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 *
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 *
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 *
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */

/*
 * From: @(#)rpc_svcout.c 1.29 89/03/30 (C) 1987 SMI
 */
char svcout_rcsid[] =
  "$Id: rpc_svcout.c,v 1.3 2005/05/09 07:16:05 chulwoo Exp $";

/*
 * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler
 */
#include <stdio.h>
#include <string.h>
#include "rpc_parse.h"
#include "rpc_util.h"
#include "proto.h"

static const char RQSTP[] = "rqstp";
static const char TRANSP[] = "transp";
static const char ARG[] = "argument";
static const char RESULT[] = "result";
static const char ROUTINE[] = "local";
static char RETVAL[] = "retval";

char _errbuf[256];		/* For all messages */

static void internal_proctype (const proc_list * plist);
static void p_xdrfunc (const char *rname, const char *typename);
static void write_real_program (const definition * def);
static void write_program (const definition * def, const char *storage);
static void printerr (const char *err, const char *transp);
static void printif (const char *proc, const char *transp,
		     const char *prefix, const char *arg);
static void write_inetmost (const char *infile);
static void print_return (const char *space);
static void print_err_message (const char *space);

static void
p_xdrfunc (const char *rname, const char *typename)
{
  if (Cflag)
    f_print (fout, "\t\t_xdr_%s = (xdrproc_t) xdr_%s;\n", rname,
	     stringfix (typename));
  else
    f_print (fout, "\t\t_xdr_%s = xdr_%s;\n", rname, stringfix (typename));
}

void
internal_proctype (const proc_list * plist)
{
  f_print (fout, "static ");
  ptype (plist->res_prefix, plist->res_type, 1);
  f_print (fout, "*");
}


/*
 * write most of the service, that is, everything but the registrations.
 */
void
write_most (const char *infile /* our name */ , int netflag, int nomain)
{
  if (inetdflag || pmflag)
    {
      const char *var_type;
#ifdef __GNU_LIBRARY__
      /* WHY? */
      var_type = (nomain ? "extern" : "");
#else
      var_type = (nomain ? "extern" : "static");
#endif
      f_print (fout, "%s int _rpcpmstart;", var_type);
      f_print (fout, "\t\t/* Started by a port monitor ? */\n");
      if (!tirpcflag)
	{
	  f_print (fout, "%s int _rpcfdtype;", var_type);
	  f_print (fout, "\t\t/* Whether Stream or Datagram ? */\n");
	}
      if (timerflag)
	{
	  f_print(fout, " /* States a server can be in wrt request */\n\n");
	  f_print(fout, "#define\t_IDLE 0\n");
	  f_print(fout, "#define\t_SERVED 1\n");
	  f_print(fout, "#define\t_SERVING 2\n\n");
	  f_print(fout, "static int _rpcsvcstate = _IDLE;");
	  f_print(fout, "\t /* Set when a request is serviced */\n");

	  if (mtflag)
	    {
	      f_print (fout, "mutex_t _svcstate_lock;");
	      f_print (fout,
		       "\t\t\t/* Mutex lock for variable_rpcsvcstate */\n");
	    }
	}
      write_svc_aux (nomain);
    }
  /* write out dispatcher and stubs */
  write_programs (nomain ? NULL : "static");

  if (nomain)
    return;

#ifdef __GNU_LIBRARY__
  if (Cflag)
    f_print (fout, "\nint\nrpcsvc_main (int argc, char **argv)\n");
  else
    {
      f_print (fout, "\nint\nrpcsvc_main (argc, argv)\n");
      f_print (fout, "\tint argc;\n");
      f_print (fout, "\tchar **argv;\n");
    }
#else
  f_print (fout, "\nrpcsvc_main()\n");
#endif
  f_print (fout, "{\n");
  if (inetdflag)
    {
      write_inetmost (infile);	/* Includes call to write_rpc_svc_fg() */
    }
  else
    {
      if (tirpcflag)
	{
          exit(-1);
	}
      else
	{
	  f_print (fout, "\tregister SVCXPRT *%s;\n", TRANSP);
	  f_print (fout, "\n");
	}
    }

}



/*
 * write the rest of the service
 */
void
write_rest (void)
{
  f_print (fout, "\n");
  if (inetdflag)
    {
      f_print (fout, "\tif (%s == (SVCXPRT *)NULL) {\n", TRANSP);
      (void) sprintf (_errbuf, "could not create a handle");
      print_err_message ("\t\t");
      f_print (fout, "\t\texit (1);\n");
      f_print (fout, "\t}\n");
      if (timerflag)
	{
	  f_print (fout, "\tif (_rpcpmstart) {\n");
	  f_print (fout,
		   "\t\t(void) signal (SIGALRM, %s closedown);\n",
		   Cflag ? "(SIG_PF)" : "(void(*)())");
	  f_print (fout, "\t\t(void) alarm (_RPCSVC_CLOSEDOWN);\n");
	  f_print (fout, "\t}\n");
	}
    }
  f_print (fout, "\tsvc_run ();\n");
  (void) sprintf (_errbuf, "svc_run returned");
  print_err_message ("\t");
  f_print (fout, "\texit (1);\n");
  f_print (fout, "\t/* NOTREACHED */\n");
  f_print (fout, "}\n");
}

void
write_programs (const char *storage)
{
  list *l;
  definition *def;

  /* write out stubs for procedure  definitions */
  for (l = defined; l != NULL; l = l->next)
    {
      def = (definition *) l->val;
      if (def->def_kind == DEF_PROGRAM)
	{
	  write_real_program (def);
	}
    }

  /* write out dispatcher for each program */
  for (l = defined; l != NULL; l = l->next)
    {
      def = (definition *) l->val;
      if (def->def_kind == DEF_PROGRAM)
	{
	  write_program (def, storage);
	}
    }
}

/* write out definition of internal function (e.g. _printmsg_1(...))
   which calls server's defintion of actual function (e.g. printmsg_1(...)).
   Unpacks single user argument of printmsg_1 to call-by-value format
   expected by printmsg_1. */
static void
write_real_program (const definition * def)
{
  version_list *vp;
  proc_list *proc;
  decl_list *l;

  if (!newstyle)
    return;			/* not needed for old style */
  for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
    {
      for (proc = vp->procs; proc != NULL; proc = proc->next)
	{
	  fprintf (fout, "\n");
	  if (!mtflag)
	    internal_proctype (proc);
	  else
	    f_print (fout, "int");
	  f_print (fout, "\n_");
	  pvname (proc->proc_name, vp->vers_num);
	  if (Cflag)
	    {
	      f_print (fout, " (");
	      /* arg name */
	      if (proc->arg_num > 1)
		f_print (fout, proc->args.argname);
	      else
		ptype (proc->args.decls->decl.prefix,
		       proc->args.decls->decl.type, 0);
	      if (mtflag)
		{
		  f_print(fout, " *argp, void *%s, struct svc_req *%s)\n",
			  RESULT, RQSTP);
		}
	      else
		f_print (fout, " *argp, struct svc_req *%s)\n",
			 RQSTP);
	    }
	  else
	    {
	      if (mtflag)
		f_print(fout, " (argp, %s, %s)\n", RESULT, RQSTP);
	      else
		f_print (fout, " (argp, %s)\n", RQSTP);
	      /* arg name */
	      if (proc->arg_num > 1)
		f_print (fout, "\t%s *argp;\n", proc->args.argname);
	      else
		{
		  f_print (fout, "\t");
		  ptype (proc->args.decls->decl.prefix,
			 proc->args.decls->decl.type, 0);
		  f_print (fout, " *argp;\n");
		}
	      f_print (fout, "	struct svc_req *%s;\n", RQSTP);
	    }

	  f_print (fout, "{\n");
	  f_print (fout, "\treturn (");
	  if (Cflag || mtflag)
	    pvname_svc (proc->proc_name, vp->vers_num);
	  else
	    pvname (proc->proc_name, vp->vers_num);
	  f_print (fout, "(");
	  if (proc->arg_num < 2)
	    {			/* single argument */
	      if (!streq (proc->args.decls->decl.type, "void"))
		f_print (fout, "*argp, ");	/* non-void */
	    }
	  else
	    {
	      for (l = proc->args.decls; l != NULL; l = l->next)
		f_print (fout, "argp->%s, ", l->decl.name);
	    }
	  f_print (fout, "%s));\n}\n", RQSTP);
	}
    }
}

static void
write_program (const definition * def, const char *storage)
{
  version_list *vp;
  proc_list *proc;
  int filled;

  for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
    {
      f_print (fout, "\n");
      if (storage != NULL)
	{
	  f_print (fout, "%s ", storage);
	}
      f_print (fout, "void\n");
      pvname (def->def_name, vp->vers_num);

      if (Cflag)
	{
	  f_print (fout, "(struct svc_req *%s, ", RQSTP);
	  f_print (fout, "register SVCXPRT *%s)\n", TRANSP);
	}
      else
	{
	  f_print (fout, "(%s, %s)\n", RQSTP, TRANSP);
	  f_print (fout, "	struct svc_req *%s;\n", RQSTP);
	  f_print (fout, "	register SVCXPRT *%s;\n", TRANSP);
	}

      f_print (fout, "{\n");

      filled = 0;
      f_print (fout, "\tunion {\n");
      for (proc = vp->procs; proc != NULL; proc = proc->next)
	{
	  if (proc->arg_num < 2)
	    {			/* single argument */
	      if (streq (proc->args.decls->decl.type,
			 "void"))
		{
		  continue;
		}
	      filled = 1;
	      f_print (fout, "\t\t");
	      ptype (proc->args.decls->decl.prefix,
		     proc->args.decls->decl.type, 0);
	      pvname (proc->proc_name, vp->vers_num);
	      f_print (fout, "_arg;\n");

	    }
	  else
	    {
	      filled = 1;
	      f_print (fout, "\t\t%s", proc->args.argname);
	      f_print (fout, " ");
	      pvname (proc->proc_name, vp->vers_num);
	      f_print (fout, "_arg;\n");
	    }
	}
      if (!filled)
	{
	  f_print (fout, "\t\tint fill;\n");
	}
      f_print (fout, "\t} %s;\n", ARG);
      if (mtflag)
	{
	  f_print(fout, "\tunion {\n");
	  for (proc = vp->procs; proc != NULL; proc = proc->next)
	    if (!streq (proc->res_type, "void"))
	      {
		f_print(fout, "\t\t");
		ptype(proc->res_prefix, proc->res_type, 0);
		pvname(proc->proc_name, vp->vers_num);
		f_print(fout, "_res;\n");
	      }
	  f_print(fout, "\t} %s;\n", RESULT);
	  f_print(fout, "\tbool_t %s;\n", RETVAL);

	} else
	  f_print (fout, "\tchar *%s;\n", RESULT);

      if (Cflag)
	{
	  f_print (fout, "\txdrproc_t _xdr_%s, _xdr_%s;\n", ARG, RESULT);
	  if (mtflag)
	    f_print(fout,
		    "\tbool_t (*%s)(char *, void *, struct svc_req *);\n",
		    ROUTINE);
	  else
	    f_print (fout, "\tchar *(*%s)(char *, struct svc_req *);\n",
		     ROUTINE);
	}
      else
	{
	  f_print (fout, "\tbool_t (*xdr_%s)(), (*xdr_%s)();\n", ARG, RESULT);
	  if (mtflag)
	    f_print(fout, "\tbool_t (*%s)();\n", ROUTINE);
	  else
	    f_print (fout, "\tchar *(*%s)();\n", ROUTINE);
	}
      f_print (fout, "\n");

      if (timerflag)
#if 0
	f_print (fout, "\t_rpcsvcdirty = 1;\n");
#else
      {
	if (mtflag)
	  f_print(fout, "\tmutex_lock(&_svcstate_lock);\n");
	f_print(fout, "\t_rpcsvcstate = _SERVING;\n");
	if (mtflag)
	  f_print(fout, "\tmutex_unlock(&_svcstate_lock);\n");
      }
#endif

      f_print (fout, "\tswitch (%s->rq_proc) {\n", RQSTP);
      if (!nullproc (vp->procs))
	{
	  f_print (fout, "\tcase NULLPROC:\n");
	  f_print (fout,
		   Cflag
		   ? "\t\t(void) svc_sendreply (%s, (xdrproc_t) xdr_void, (char *)NULL);\n"
		: "\t\t(void) svc_sendreply (%s, xdr_void, (char *)NULL);\n",
		   TRANSP);
	  print_return ("\t\t");
	  f_print (fout, "\n");
	}
      for (proc = vp->procs; proc != NULL; proc = proc->next)
	{
	  f_print (fout, "\tcase %s:\n", proc->proc_name);
	  if (proc->arg_num < 2)
	    {			/* single argument */
	      p_xdrfunc (ARG, proc->args.decls->decl.type);
	    }
	  else
	    {
	      p_xdrfunc (ARG, proc->args.argname);
	    }
	  p_xdrfunc (RESULT, proc->res_type);
	  if (Cflag)
	    {
	      if (mtflag)
		f_print(fout,
			"\t\t%s = (bool_t (*) (char *, void *,  struct svc_req *))",
			ROUTINE);
	      else
		f_print (fout,
			 "\t\t%s = (char *(*)(char *, struct svc_req *)) ",
			 ROUTINE);
	    }
	  else
	    if (mtflag)
	      f_print(fout, "\t\t%s = (bool_t (*)()) ", ROUTINE);
	    else
	      f_print (fout, "\t\t%s = (char *(*)()) ", ROUTINE);

	  if (newstyle)
	    {			/* new style: calls internal routine */
	      f_print (fout, "_");
	    }
	  if ((Cflag || mtflag) && !newstyle)
	    pvname_svc (proc->proc_name, vp->vers_num);
	  else
	    pvname (proc->proc_name, vp->vers_num);
	  f_print (fout, ";\n");
	  f_print (fout, "\t\tbreak;\n\n");
	}
      f_print (fout, "\tdefault:\n");
      printerr ("noproc", TRANSP);
      print_return ("\t\t");
      f_print (fout, "\t}\n");

      f_print (fout, "\tmemset ((char *)&%s, 0, sizeof (%s));\n", ARG, ARG);
      if (Cflag)
	printif ("getargs", TRANSP, "(caddr_t) &", ARG);
      else
	printif ("getargs", TRANSP, "&", ARG);
      printerr ("decode", TRANSP);
      print_return ("\t\t");
      f_print (fout, "\t}\n");

      if (!mtflag)
	{
	  if (Cflag)
	    f_print (fout, "\t%s = (*%s)((char *)&%s, %s);\n",
		     RESULT, ROUTINE, ARG, RQSTP);
	  else
	    f_print (fout, "\t%s = (*%s)(&%s, %s);\n",
		     RESULT, ROUTINE, ARG, RQSTP);
	}
      else
	if (Cflag)
	  f_print(fout, "\t%s = (bool_t) (*%s)((char *)&%s, (void *)&%s, %s);\n",
		  RETVAL, ROUTINE, ARG, RESULT, RQSTP);
	else
	  f_print(fout, "\t%s = (bool_t) (*%s)(&%s, &%s, %s);\n",
		  RETVAL, ROUTINE, ARG, RESULT, RQSTP);
      if (mtflag)
	f_print(fout,
		"\tif (%s > 0 && !svc_sendreply(%s, _xdr_%s, (char *)&%s)) {\n",
		RETVAL, TRANSP, RESULT, RESULT);
      else
	f_print(fout,
		"\tif (%s != NULL && !svc_sendreply(%s, _xdr_%s, %s)) {\n",
		RESULT, TRANSP, RESULT, RESULT);

      printerr ("systemerr", TRANSP);
      f_print (fout, "\t}\n");

      if (Cflag)
	printif ("freeargs", TRANSP, "(caddr_t) &", ARG);
      else
	printif ("freeargs", TRANSP, "&", ARG);

      sprintf (_errbuf, "unable to free arguments");
      print_err_message ("\t\t");
      f_print (fout, "\t\texit (1);\n");
      f_print (fout, "\t}\n");
      /* print out free routine */
      if (mtflag)
	{
	  f_print(fout,"\tif (!");
	  pvname(def->def_name, vp->vers_num);
	  f_print(fout,"_freeresult (%s, _xdr_%s, (caddr_t) &%s))\n",
		  TRANSP, RESULT, RESULT);
	  (void) sprintf(_errbuf, "unable to free results");
	  print_err_message("\t\t");
	  f_print(fout, "\n");
	}
      print_return ("\t");
      f_print (fout, "}\n");
    }
}

static void
printerr (const char *err, const char *transp)
{
  f_print (fout, "\t\tsvcerr_%s (%s);\n", err, transp);
}

static void
printif (const char *proc, const char *transp, const char *prefix,
	 const char *arg)
{
  f_print (fout, "\tif (!svc_%s (%s, _xdr_%s, %s%s)) {\n",
	   proc, transp, arg, prefix, arg);
}

int
nullproc (const proc_list * proc)
{
  for (; proc != NULL; proc = proc->next)
    {
      if (streq (proc->proc_num, "0"))
	{
	  return 1;
	}
    }
  return 0;
}

static void
write_inetmost (const char *infile)
{
  f_print (fout, "\tregister SVCXPRT *%s;\n", TRANSP);
  f_print (fout, "\tint sock;\n");
  f_print (fout, "\tint proto;\n");
  f_print (fout, "\tstruct sockaddr_in saddr;\n");
  f_print (fout, "\tint asize = sizeof (saddr);\n");
  f_print (fout, "\n");
  f_print (fout,
       "\tif (getsockname (0, (struct sockaddr *)&saddr, &asize) == 0) {\n");
  f_print (fout, "\t\tint ssize = sizeof (int);\n\n");
  f_print (fout, "\t\tif (saddr.sin_family != AF_INET)\n");
  f_print (fout, "\t\t\texit (1);\n");
  f_print (fout, "\t\tif (getsockopt (0, SOL_SOCKET, SO_TYPE,\n");
  f_print (fout, "\t\t\t\t(char *)&_rpcfdtype, &ssize) == -1)\n");
  f_print (fout, "\t\t\texit (1);\n");
  f_print (fout, "\t\tsock = 0;\n");
  f_print (fout, "\t\t_rpcpmstart = 1;\n");
  f_print (fout, "\t\tproto = 0;\n");

  f_print (fout, "\t} else {\n");

  f_print (fout, "\t\tsock = RPC_ANYSOCK;\n");

  f_print (fout, "\t}\n");
}

static void
print_return (const char *space)
{
  if (exitnow)
    f_print (fout, "%sexit (0);\n", space);
  else
    {
      if (timerflag)
	{
#if 0
	  f_print (fout, "%s_rpcsvcdirty = 0;\n", space);
#else
	  if (mtflag)
	    f_print(fout, "%smutex_lock(&_svcstate_lock);\n", space);
	  f_print(fout, "%s_rpcsvcstate = _SERVED;\n", space);
	  if (mtflag)
	    f_print(fout, "%smutex_unlock(&_svcstate_lock);\n", space);
#endif
	}
      f_print (fout, "%sreturn;\n", space);
    }
}

static void
print_err_message (const char *space)
{
  if (logflag)
    f_print (fout, "%ssyslog (LOG_ERR, \"%s\");\n", space, _errbuf);
  else if (inetdflag || pmflag)
    f_print (fout, "%s_msgout (\"%s\");\n", space, _errbuf);
  else
    f_print (fout, "%sfprintf (stderr, \"%s\");\n", space, _errbuf);
}

/*
 * Write the server auxiliary function ( _msgout, timeout)
 */
void
write_svc_aux (int nomain)
{
  if (!logflag)
    write_msg_out ();
}

/*
 * Write the _msgout function
 */

void
write_msg_out (void)
{
  f_print (fout, "\n");
  f_print (fout, "static\n");
  if (!Cflag)
    {
      f_print (fout, "void _msgout (msg)\n");
      f_print (fout, "\tchar *msg;\n");
    }
  else
    {
      f_print (fout, "void _msgout (char* msg)\n");
    }
  f_print (fout, "{\n");
  f_print (fout, "#ifdef RPC_SVC_FG\n");
  if (inetdflag || pmflag)
    f_print (fout, "\tif (_rpcpmstart)\n");
  f_print (fout, "\t\tsyslog (LOG_ERR, msg);\n");
  f_print (fout, "\telse\n");
  f_print (fout, "\t\tfprintf (stderr, \"%%s\\n\", msg);\n");
  f_print (fout, "#else\n");
  f_print (fout, "\tsyslog (LOG_ERR, msg);\n");
  f_print (fout, "#endif\n");
  f_print (fout, "}\n");
}



/*
 * write a registration for the given transport for Inetd
 */
void
write_inetd_register (const char *transp)
{
  list *l;
  definition *def;
  version_list *vp;
  const char *sp;
  int isudp;
  char tmpbuf[32];

  if (inetdflag)
    sp = "\t";
  else
    sp = "";
  if (streq (transp, "bj"))
    isudp = 1;
  else
    isudp = 0;
  f_print (fout, "\n");
  if (inetdflag)
    {
      f_print (fout, "\tif ((_rpcfdtype == 0) || (_rpcfdtype == %s)) {\n",
	       isudp ? "SOCK_DGRAM" : "SOCK_STREAM");
    }
  f_print (fout, "%s\t%s = svc%s_create(%s",
	   sp, TRANSP, transp, inetdflag ? "sock" : "RPC_ANYSOCK");
  if (!isudp)
    f_print (fout, ", 0, 0");
  f_print (fout, ");\n");
  f_print (fout, "%s\tif (%s == NULL) {\n", sp, TRANSP);
  (void) sprintf (_errbuf, "cannot create %s service.", transp);
  (void) sprintf (tmpbuf, "%s\t\t", sp);
  print_err_message (tmpbuf);
  f_print (fout, "%s\t\texit(1);\n", sp);
  f_print (fout, "%s\t}\n", sp);

  if (inetdflag)
    {
      f_print (fout, "%s\tif (!_rpcpmstart)\n\t", sp);
      f_print (fout, "%s\tproto = IPPROTO_%s;\n",
	       sp, isudp ? "UDP" : "TCP");
    }
  for (l = defined; l != NULL; l = l->next)
    {
      def = (definition *) l->val;
      if (def->def_kind != DEF_PROGRAM)
	{
	  continue;
	}
      for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
	{
	  f_print (fout, "%s\tif (!svc_register(%s, %s, %s, ",
		   sp, TRANSP, def->def_name, vp->vers_name);
	  pvname (def->def_name, vp->vers_num);
	  if (inetdflag)
	    f_print (fout, ", proto)) {\n");
	  else
	    f_print (fout, ", IPPROTO_%s)) {\n",
		     isudp ? "UDP" : "TCP");
	  (void) sprintf (_errbuf, "unable to register (%s, %s, %s).",
			  def->def_name, vp->vers_name, transp);
	  print_err_message (tmpbuf);
	  f_print (fout, "%s\t\texit(1);\n", sp);
	  f_print (fout, "%s\t}\n", sp);
	}
    }
  if (inetdflag)
    f_print (fout, "\t}\n");
}