/*	$OpenBSD: rpc_sample.c,v 1.3 1997/11/15 22:10:53 deraadt Exp $	*/
/*	$NetBSD: rpc_sample.c,v 1.2 1995/06/11 21:50:01 pk Exp $	*/
/*
 * 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
 */

#ifndef lint
static char sccsid[] = "@(#)rpc_sample.c  1.1  90/08/30  (C) 1987 SMI";

#endif

/*
 * rpc_sample.c, Sample client-server code outputter for the RPC protocol compiler
 */

#include <sys/cdefs.h>
#include <stdio.h>
#include <string.h>
#include "rpc_parse.h"
#include "rpc_util.h"

static char RQSTP[] = "rqstp";

void printarglist();
static void write_sample_client __P((const char *, version_list *));
static void write_sample_server __P((definition *));
static void return_type __P((proc_list *));

void
write_sample_svc(def)
     definition *def;
{

	if (def->def_kind != DEF_PROGRAM) 
	  return;
	write_sample_server(def);
}


int
write_sample_clnt(def)
     definition *def;
{
        version_list *vp;
	int count = 0;

	if (def->def_kind != DEF_PROGRAM) 
	  return( 0 );
	/* generate sample code for each version */
	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
	  write_sample_client(def->def_name, vp );
	  ++count;
	}
	return( count );
}


static void
write_sample_client(program_name, vp )
     const char* program_name;
     version_list *vp;
{
  proc_list *proc;
  int i;
  decl_list *l;

  f_print(fout, "\n\nvoid\n" );
  pvname( program_name, vp->vers_num );
  if( Cflag )
    f_print(fout,"( char* host )\n{\n" );
  else
    f_print(fout, "(host)\nchar *host;\n{\n" );
  f_print(fout, "\tCLIENT *clnt;\n");

  i = 0;
  for (proc = vp->procs; proc != NULL; proc = proc->next) {
      f_print(fout, "\t");
      ptype(proc->res_prefix, proc->res_type, 1);
      f_print(fout, " *result_%d;\n",++i);
      /* print out declarations for arguments */
      if( proc->arg_num < 2 && !newstyle) {
	f_print( fout, "\t" );
	if( !streq( proc->args.decls->decl.type, "void") )
	  ptype(proc->args.decls->decl.prefix, proc->args.decls->decl.type, 1);
	else
	  f_print(fout, "char* ");  /* cannot have "void" type */
	f_print(fout, " ");
	pvname( proc->proc_name, vp->vers_num );
	f_print(fout, "_arg;\n");
      } else if (!streq( proc->args.decls->decl.type, "void")) {
	for (l = proc->args.decls; l != NULL; l = l->next) {
	  f_print( fout, "\t" );
	  ptype(l->decl.prefix, l->decl.type, 1);
	  f_print( fout, " ");
	  pvname( proc->proc_name, vp->vers_num );
	  f_print(fout, "_%s;\n", l->decl.name );
/*	  pdeclaration(proc->args.argname, &l->decl, 1, ";\n" );*/
	}
      }
    }

  /* generate creation of client handle */
  f_print(fout, "\tclnt = clnt_create(host, %s, %s, \"%s\");\n", 
	  program_name, vp->vers_name, tirpcflag? "netpath" : "udp");
  f_print(fout, "\tif (clnt == NULL) {\n");
  f_print(fout, "\t\tclnt_pcreateerror(host);\n");
  f_print(fout, "\t\texit(1);\n\t}\n");

  /* generate calls to procedures */
  i = 0;
  for (proc = vp->procs; proc != NULL; proc = proc->next) {
      f_print(fout, "\tresult_%d = ",++i);      
      pvname(proc->proc_name, vp->vers_num);
      if (proc->arg_num < 2 && !newstyle) {
	f_print(fout, "(" );
	if( streq( proc->args.decls->decl.type, "void") )  /* cast to void* */
	  f_print(fout, "(void*)");
	f_print(fout, "&" );
	pvname(proc->proc_name, vp->vers_num );
	f_print(fout, "_arg, clnt);\n");
      } else if (streq( proc->args.decls->decl.type, "void")) {
	    f_print(fout, "(clnt);\n");
	  }
      else {
	f_print(fout, "(");
	for (l = proc->args.decls;  l != NULL; l = l->next) {
	  pvname( proc->proc_name, vp->vers_num );
	  f_print(fout, "_%s, ", l->decl.name);
	}
	f_print(fout, "clnt);\n");
      }
      f_print(fout, "\tif (result_%d == NULL) {\n", i);
      f_print(fout, "\t\tclnt_perror(clnt, \"call failed:\");\n");
      f_print(fout, "\t}\n");
    }

  f_print(fout, "\tclnt_destroy( clnt );\n" );
  f_print(fout, "}\n");
}

static void
write_sample_server(def)
	definition *def;
{
	version_list *vp;
	proc_list *proc;

	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
		for (proc = vp->procs; proc != NULL; proc = proc->next) {
			f_print(fout, "\n");
/*			if( Cflag )
			  f_print( fout, "extern \"C\"{\n");
*/
			return_type(proc);
			f_print(fout, "* \n");
			pvname_svc(proc->proc_name, vp->vers_num);
			printarglist( proc, RQSTP, "struct svc_req *" );

			f_print(fout, "{\n");
			f_print(fout, "\n\tstatic ");
			if( !streq( proc->res_type, "void") )
			  return_type(proc);
			else
			  f_print(fout, "char*" );  /* cannot have void type */
			f_print(fout, " result; %s\n", proc->res_type);
			f_print(fout, 
				"\n\t/*\n\t * insert server code here\n\t */\n\n");
			if( !streq( proc->res_type, "void") )
			  f_print(fout, "\treturn(&result);\n}\n");
			else  /* cast back to void * */
			  f_print(fout, "\treturn((void*) &result);\n}\n"); 
/*			if( Cflag)
			  f_print( fout, "};\n");
*/

		} 		
	}
}

static void 
return_type(plist)
	proc_list *plist;
{
	ptype( plist->res_prefix, plist->res_type, 1 );
}

void
add_sample_msg()
{
	f_print(fout, "/*\n");
	f_print(fout, " * This is sample code generated by rpcgen.\n");
	f_print(fout, " * These are only templates and you can use them\n");
	f_print(fout, " * as a guideline for developing your own functions.\n");
	f_print(fout, " */\n\n");
}

void
write_sample_clnt_main()
{
  list *l;
  definition *def;
  version_list *vp;

  f_print(fout, "\n\n" );
  if( Cflag )
    f_print(fout,"main( int argc, char* argv[] )\n{\n" );
  else
    f_print(fout, "main(argc, argv)\nint argc;\nchar *argv[];\n{\n" );

  f_print(fout, "\tchar *host;");
  f_print(fout, "\n\n\tif(argc < 2) {");
  f_print(fout, "\n\t\tprintf(\"usage: %%s server_host\\n\", argv[0]);\n" );
  f_print(fout, "\t\texit(1);\n\t}");
  f_print(fout, "\n\thost = argv[1];\n");

  for (l = defined; l != NULL; l = l->next) {
		def = l->val;
		if (def->def_kind != DEF_PROGRAM) {
			continue;
		}
		for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
		        f_print( fout, "\t" );
			pvname(def->def_name, vp->vers_num);
			f_print( fout, "( host );\n" );
		      }
		}
  f_print(fout, "}\n");
}
