/*

 * From: @(#)rpc_sample.c  1.1  90/08/30

 *

 * Copyright (c) 2010, Oracle America, Inc.

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above

 *       copyright notice, this list of conditions and the following

 *       disclaimer in the documentation and/or other materials

 *       provided with the distribution.

 *     * Neither the name of the "Oracle America, Inc." nor the names of its

 *       contributors may be used to endorse or promote products derived

 *       from this software without specific prior written permission.

 *

 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE

 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

/*

 * rpc_sample.c, Sample client-server code 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 void write_sample_client (const char *program_name, version_list * vp);

static void write_sample_server (definition * def);

static void return_type (proc_list * plist);

void

write_sample_svc (definition * def)

{

  if (def->def_kind != DEF_PROGRAM)

    return;

  write_sample_server (def);

}

int

write_sample_clnt (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 (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");

      ++i;

      if (mtflag)

	{

	  f_print (fout, "enum clnt_stat retval_%d;\n\t", i);

	  ptype (proc->res_prefix, proc->res_type, 1);

	  if (!streq (proc->res_type, "void"))

	    f_print (fout, "result_%d;\n", i);

	  else

	    fprintf (fout, "*result_%d;\n", i);

	}

      else

	{

	  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);

	      f_print (fout, " ");

	    }

	  else

	    f_print (fout, "char *");	/* cannot have "void" type */

	  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);

	      if (strcmp (l->decl.type, "string") == 1)

		f_print (fout, " ");

	      pvname (proc->proc_name, vp->vers_num);

	      f_print (fout, "_%s;\n", l->decl.name);

	    }

	}

    }

  /* generate creation of client handle */

  f_print(fout, "\n#ifndef\tDEBUG\n");

  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");

  f_print(fout, "#endif\t/* DEBUG */\n\n");

  /* generate calls to procedures */

  i = 0;

  for (proc = vp->procs; proc != NULL; proc = proc->next)

    {

      if (mtflag)

	f_print(fout, "\tretval_%d = ",++i);

      else

	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);

	  if (mtflag)

	    f_print(fout, "_arg, &result_%d, clnt);\n", i);

	  else

	    f_print (fout, "_arg, clnt);\n");

	}

      else if (streq (proc->args.decls->decl.type, "void"))

	{

	  if (mtflag)

	    f_print (fout, "(&result_%d, clnt);\n", i);

	  else

	    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);

	    }

	  if (mtflag)

	    f_print(fout, "&result_%d, ", i);

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

	}

      if (mtflag)

	{

	  f_print(fout, "\tif (retval_%d != RPC_SUCCESS) {\n", i);

	}

      else

	{

	  f_print(fout, "\tif (result_%d == (", i);

	  ptype(proc->res_prefix, proc->res_type, 1);

	  f_print(fout, "*) NULL) {\n");

	}

      f_print(fout, "\t\tclnt_perror (clnt, \"call failed\");\n");

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

    }

  f_print (fout, "#ifndef\tDEBUG\n");

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

  f_print (fout, "#endif\t /* DEBUG */\n");

  f_print (fout, "}\n");

}

static void

write_sample_server (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 (!mtflag)

	    {

	      return_type (proc);

	      f_print (fout, "*\n");

	    }

	  else

	    f_print (fout, "bool_t\n");

	  if (Cflag || mtflag)

	    pvname_svc (proc->proc_name, vp->vers_num);

	  else

	    pvname(proc->proc_name, vp->vers_num);

	  printarglist(proc, "result", RQSTP, "struct svc_req *");

	  f_print(fout, "{\n");

	  if (!mtflag)

	    {

	      f_print(fout, "\tstatic ");

	      if(!streq(proc->res_type, "void"))

		return_type(proc);

	      else

		f_print(fout, "char *");

				/* cannot have void type */

	      /* f_print(fout, " result;\n", proc->res_type); */

	      f_print(fout, " result;\n");

	    }

	  else

	    f_print(fout, "\tbool_t retval;\n");

	  fprintf (fout, "\n\t/*\n\t * insert server code here\n\t */\n\n");

	  if (!mtflag)

	    {

	      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");

	    }

	  else

	    f_print(fout, "\treturn retval;\n}\n");

	}

      /* put in sample freeing routine */

      if (mtflag)

	{

	  f_print(fout, "\nint\n");

	  pvname(def->def_name, vp->vers_num);

	  if (Cflag)

	    f_print(fout,"_freeresult (SVCXPRT *transp, xdrproc_t xdr_result, caddr_t result)\n");

	  else

	    {

	      f_print(fout,"_freeresult (transp, xdr_result, result)\n");

	      f_print(fout,"\tSVCXPRT *transp;\n");

	      f_print(fout,"\txdrproc_t xdr_result;\n");

	      f_print(fout,"\tcaddr_t result;\n");

	    }

	  f_print(fout, "{\n");

	  f_print(fout, "\txdr_free (xdr_result, result);\n");

	  f_print(fout,

		  "\n\t/*\n\t * Insert additional freeing code here, if needed\n\t */\n");

	  f_print(fout, "\n\treturn 1;\n}\n");

	}

    }

}

static void

return_type (proc_list * plist)

{

  ptype (plist->res_prefix, plist->res_type, 1);

}

void

add_sample_msg (void)

{

  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 (void)

{

  list *l;

  definition *def;

  version_list *vp;

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

  if (Cflag)

    f_print (fout, "int\nmain (int argc, char *argv[])\n{\n");

  else

    f_print (fout, "int\nmain (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, "exit (0);\n}\n");

}