usr/src/lib/librpc/rpcgen/rpc_svcout.c

/* @(#)rpc_svcout.c     2.1 88/08/01 4.0 RPCSRC */
/*
 * 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
 */
#ifndef lint
static char sccsid[] = "@(#)rpc_svcout.c 1.6 87/06/24 (C) 1987 SMI";
#endif

/*
 * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler
 * Copyright (C) 1987, Sun Microsytsems, Inc.
 */
#include <stdio.h>
#include <strings.h>
#include "rpc_parse.h"
#include "rpc_util.h"

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


/*
 * write most of the service, that is, everything but the registrations.
 */
void
write_most()
{
        list *l;
        definition *def;
        version_list *vp;

        for (l = defined; l != NULL; l = l->next) {
                def = (definition *) l->val;
                if (def->def_kind == DEF_PROGRAM) {
                        for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
                                f_print(fout, "\nstatic void ");
                                pvname(def->def_name, vp->vers_num);
                                f_print(fout, "();");
                        }
                }
        }
        f_print(fout, "\n\n");
        f_print(fout, "main()\n");
        f_print(fout, "{\n");
        f_print(fout, "\tSVCXPRT *%s;\n", TRANSP);
        f_print(fout, "\n");
        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, "\t(void)pmap_unset(%s, %s);\n", def->def_name, vp->vers_name);
                }
        }
}


/*
 * write a registration for the given transport
 */
void
write_register(transp)
        char *transp;
{
        list *l;
        definition *def;
        version_list *vp;

        f_print(fout, "\n");
        f_print(fout, "\t%s = svc%s_create(RPC_ANYSOCK", TRANSP, transp);
        if (streq(transp, "tcp")) {
                f_print(fout, ", 0, 0");
        }
        f_print(fout, ");\n");
        f_print(fout, "\tif (%s == NULL) {\n", TRANSP);
        f_print(fout, "\t\t(void)fprintf(stderr, \"cannot create %s service.\\n\");\n", transp);
        f_print(fout, "\t\texit(1);\n");
        f_print(fout, "\t}\n");

        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,
                                "\tif (!svc_register(%s, %s, %s, ",
                                TRANSP, def->def_name, vp->vers_name);
                        pvname(def->def_name, vp->vers_num);
                        f_print(fout, ", IPPROTO_%s)) {\n",
                                streq(transp, "udp") ? "UDP" : "TCP");
                        f_print(fout,
                                "\t\t(void)fprintf(stderr, \"unable to register (%s, %s, %s).\\n\");\n",
                                def->def_name, vp->vers_name, transp);
                        f_print(fout, "\t\texit(1);\n");
                        f_print(fout, "\t}\n");
                }
        }
}


/*
 * write the rest of the service
 */
void
write_rest()
{
        f_print(fout, "\tsvc_run();\n");
        f_print(fout, "\t(void)fprintf(stderr, \"svc_run returned\\n\");\n");
        f_print(fout, "\texit(1);\n");
        f_print(fout, "}\n");
}

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

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


static
write_program(def, storage)
        definition *def;
        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);
                f_print(fout, "(%s, %s)\n", RQSTP, TRANSP);
                f_print(fout, " struct svc_req *%s;\n", RQSTP);
                f_print(fout, " 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 (streq(proc->arg_type, "void")) {
                                continue;
                        }
                        filled = 1;
                        f_print(fout, "\t\t");
                        ptype(proc->arg_prefix, proc->arg_type, 0);
                        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);
                f_print(fout, "\tchar *%s;\n", RESULT);
                f_print(fout, "\tbool_t (*xdr_%s)(), (*xdr_%s)();\n", ARG, RESULT);
                f_print(fout, "\tchar *(*%s)();\n", ROUTINE);
                f_print(fout, "\n");
                f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP);

                if (!nullproc(vp->procs)) {
                        f_print(fout, "\tcase NULLPROC:\n");
                        f_print(fout, "\t\t(void)svc_sendreply(%s, xdr_void, (char *)NULL);\n", TRANSP);
                        f_print(fout, "\t\treturn;\n\n");
                }
                for (proc = vp->procs; proc != NULL; proc = proc->next) {
                        f_print(fout, "\tcase %s:\n", proc->proc_name);
                        f_print(fout, "\t\txdr_%s = xdr_%s;\n", ARG,
                                stringfix(proc->arg_type));
                        f_print(fout, "\t\txdr_%s = xdr_%s;\n", RESULT,
                                stringfix(proc->res_type));
                        f_print(fout, "\t\t%s = (char *(*)()) ", ROUTINE);
                        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);
                f_print(fout, "\t\treturn;\n");
                f_print(fout, "\t}\n");

                f_print(fout, "\tbzero((char *)&%s, sizeof(%s));\n", ARG, ARG);
                printif("getargs", TRANSP, "&", ARG);
                printerr("decode", TRANSP);
                f_print(fout, "\t\treturn;\n");
                f_print(fout, "\t}\n");

                f_print(fout, "\t%s = (*%s)(&%s, %s);\n", RESULT, ROUTINE, ARG,
                        RQSTP);
                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");

                printif("freeargs", TRANSP, "&", ARG);
                f_print(fout, "\t\t(void)fprintf(stderr, \"unable to free arguments\\n\");\n");
                f_print(fout, "\t\texit(1);\n");
                f_print(fout, "\t}\n");

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

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

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


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