/*
 * 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.
 *
 * 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
 */

/*
 * rpc_sample.c, Sample client-server code outputter for the RPC protocol compiler
 * Copyright (C) 1987, Sun Microsystems, Inc.
 */

#include <stdio.h>
#include <string.h>
#include "rpc_parse.h"
#include "rpc_scan.h"
#include "rpc_util.h"


static char RQSTP[] = "rqstp";

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

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);
        f_print(fout, "(char *host)\n{\n");
        f_print(fout, "\tCLIENT *clnt;\n");

        i = 0;
        for (proc = vp->procs; proc != NULL; proc = proc->next) {
                f_print(fout, "\t");
                if (mtflag) {
                        f_print(fout, "enum clnt_stat retval_%d;\n\t", ++i);
                        ptype(proc->res_prefix, proc->res_type, 1);
                        f_print(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);
                        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);
                                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 == (CLIENT *) 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");
                        pvname_svc(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");
                        }
                        else
                                f_print(fout, "\tbool_t retval;\n");
                        f_print(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);
                f_print(fout,"_freeresult(SVCXPRT *transp, xdrproc_t xdr_result, caddr_t result)\n");
                f_print(fout, "{\n");
                f_print(fout, "\t(void) xdr_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}\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");
        f_print(fout, "int\n");
        f_print(fout, "main(int argc, char *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");
}