/*
 * 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_svcout.c, Server-skeleton 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 char TRANSP[] = "transp";
static char ARG[] = "argument";
static char RESULT[] = "result";
static char ROUTINE[] = "local";
static char RETVAL[] = "retval";

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

void internal_proctype( proc_list * );
static void write_real_program( definition * );
static void write_program(definition *, const char *);
static void printerr(const char *, const char *);
static void printif(const char *, const char *, const char *, const char *);
static void write_inetmost(const char *);
static void print_return(const char *);
static void print_pmapunset(const char *);
static void print_err_message(const char *);
static void write_timeout_func( void );
static void write_pm_most(const char *, int);
static void write_rpc_svc_fg(const char *, const char *);
static void open_log_file(const char *, const char *);
static void write_msg_out( void );


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

void
internal_proctype(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, int netflag, int nomain)
{
        if (inetdflag || pmflag) {
                const char *var_type;
                var_type = (nomain? "extern" : "static");
                f_print(fout, "%s int _rpcpmstart;", var_type);
                f_print(fout, "\t\t/* Started by a port monitor ? */\n");
                if (!tirpcflag || tirpc_socket) {
                        f_print(fout, "%s int _rpcfdtype;", var_type);
                        f_print(fout, "\n\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, "pthread_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((char *)NULL);

        if (nomain)
                return;

        f_print(fout, "\nint\n");
        f_print(fout, "main()\n");
        f_print(fout, "{\n");
        if (inetdflag) {
                write_inetmost(infile);
                /* Includes call to write_rpc_svc_fg() */
        } else {
                if (tirpcflag) {
                        if (netflag) {
                                f_print(fout,
                                        "\tregister SVCXPRT *%s;\n", TRANSP);
                                f_print(fout,
                                        "\tstruct netconfig *nconf = NULL;\n");
                        }
                        f_print(fout, "\tpid_t pid;\n");
                        f_print(fout, "\tint i;\n");
                        if (pmflag) {
                                if (tirpc_socket) {
                                        f_print(fout, "\tstruct sockaddr_storage saddr;\n");
                                        f_print(fout, "\tsocklen_t asize = sizeof (saddr);\n\n");
                                } else
                                        f_print(fout, "\tchar mname[FMNAMESZ + 1];\n\n");
                        }

                        if (mtflag & timerflag)
                                f_print(fout, "\tmutex_init(&_svcstate_lock, USYNC_THREAD, NULL);\n");
                        if (pmflag) {
                                write_pm_most(infile, netflag);
                                f_print(fout, "\telse {\n");
                                write_rpc_svc_fg(infile, "\t\t");
                                f_print(fout, "\t}\n");
                        } else
                                write_rpc_svc_fg(infile, "\t\t");

                } else {
                        f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP);
                        f_print(fout, "\n");
                        print_pmapunset("\t");
                }
        }

        if (logflag && !inetdflag) {
                open_log_file(infile, "\t");
        }
}

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

        sp = "";
        f_print(fout, "\n");
        f_print(fout, "%s\tnconf = getnetconfigent(\"%s\");\n", sp, transp);
        f_print(fout, "%s\tif (nconf == NULL) {\n", sp);
        (void) sprintf(_errbuf, "cannot find %s netid.", transp);
        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 (tirpcflag) {
                f_print(fout, "%s\t%s = svc_tli_create(RPC_ANYFD, ",
                    sp, TRANSP);
                f_print(fout,"nconf, 0, RPC_MAXDATASIZE, RPC_MAXDATASIZE);\n");
        } else {
                f_print(fout,
                    "%s\t%s = svc_tli_create(RPC_ANYFD, nconf, 0, 0, 0);\n",
                    sp, TRANSP);
        }
        f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP);
        (void) sprintf(_errbuf, "cannot create %s service.", transp);
        print_err_message(tmpbuf);
        f_print(fout, "%s\t\texit(1);\n", sp);
        f_print(fout, "%s\t}\n", sp);

        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\t(void) rpcb_unset(%s, %s, nconf);\n",
                                sp, def->def_name, vp->vers_name);
                        f_print(fout,
                                "%s\tif (!svc_reg(%s, %s, %s, ",
                                sp, TRANSP, def->def_name, vp->vers_name);
                        pvname(def->def_name, vp->vers_num);
                        f_print(fout, ", nconf)) {\n");
                        (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);
                }
        }
        f_print(fout, "%s\tfreenetconfigent(nconf);\n", sp);
}

/*
 * write a registration for the given transport for TLI
 */
void
write_nettype_register(const char *transp)
{
        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) {
                        continue;
                }
                for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
                        f_print(fout, "\tif (!svc_create(");
                        pvname(def->def_name, vp->vers_num);
                        f_print(fout, ", %s, %s, \"%s\")) {\n",
                                def->def_name, vp->vers_name, transp);
                        (void) sprintf(_errbuf,
                                "unable to create (%s, %s) for %s.",
                                        def->def_name, vp->vers_name, transp);
                        print_err_message("\t\t");
                        f_print(fout, "\t\texit(1);\n");
                        f_print(fout, "\t}\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, closedown);\n");
                        f_print(fout, "\t\t(void) \
alarm(_RPCSVC_CLOSEDOWN/2);\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 definition 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(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) {
                        f_print(fout, "\n");
                        if (!mtflag)
                                internal_proctype(proc);
                        else
                                f_print(fout, "int");
                        f_print(fout, "\n_");
                        pvname(proc->proc_name, vp->vers_num);
                        f_print(fout, "(");
                        /* arg name */
                        if (proc->arg_num > 1)
                                fputs(proc->args.argname, fout);
                        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);

                        f_print(fout, "{\n");
                        f_print(fout, "\treturn (");
                        pvname_svc(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);
                        }
                        if (mtflag)
                                f_print(fout, "%s, ",RESULT);
                        f_print(fout, "%s));\n}\n", RQSTP);
                }
        }
}

static void
write_program(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);

                f_print(fout, "(struct svc_req *%s, ", 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 (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")) {
                                        continue;
                                }
                                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);

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

                if (timerflag) {
                        if (mtflag)
                                f_print(fout, "\tpthread_mutex_lock(&_svcstate_lock);\n");

                        f_print(fout, "\t_rpcsvcstate = _SERVING;\n");                          
                        if (mtflag)
                                f_print(fout, "\tpthread_mutex_unlock(&_svcstate_lock);\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,\n\t\t\t"
                                "(xdrproc_t) 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 (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);
                        if (newstyle) { /* new style: calls internal routine */
                                f_print(fout, "_");
                        }
                        if (!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,
                        "\t(void) memset((char *)&%s, 0, sizeof (%s));\n",
                        ARG, ARG);
                printif("getargs", TRANSP, "(caddr_t) &", ARG);
                printerr("decode", TRANSP);
                print_return("\t\t");
                f_print(fout, "\t}\n");

                if (!mtflag)
                        f_print(fout, "\t%s = (*%s)((char *)&%s, %s);\n",
                                RESULT, ROUTINE, ARG, RQSTP);
                else
                        f_print(fout, "\t%s = (bool_t) (*%s)((char *)&%s, (void *)&%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");

                printif("freeargs", TRANSP, "(caddr_t) &", ARG);
                (void) 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, (char *)%s%s)) {\n",
                proc, transp, arg, prefix, arg);
}

int
nullproc(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, "\tsocklen_t asize = sizeof (saddr);\n");
        f_print(fout, "\n");
        f_print(fout,
        "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n");
        f_print(fout, "\t\tsocklen_t 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");
        open_log_file(infile, "\t\t");
        f_print(fout, "\t} else {\n");
        write_rpc_svc_fg(infile, "\t\t");
        f_print(fout, "\t\tsock = RPC_ANYSOCK;\n");
        print_pmapunset("\t\t");
        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 (mtflag)
                                f_print(fout, "%spthread_mutex_lock(&_svcstate_lock);\n", space);
                        f_print(fout, "%s_rpcsvcstate = _SERVED;\n", space);
                        if (mtflag)
                                f_print(fout, "%spthread_mutex_unlock(&_svcstate_lock);\n", space);
                }
                f_print(fout, "%sreturn;\n", space);
        }
}

static void
print_pmapunset(const char *space)
{
        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, "%s(void) pmap_unset(%s, %s);\n",
                                        space, def->def_name, vp->vers_name);
                        }
                }
        }
}

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();
        if (!nomain)
                write_timeout_func();
}

/*
 * Write the _msgout function
 */

static void
write_msg_out(void)
{
        f_print(fout, "\n");
/*
 * Avoid making _msgout() static -- it's useful to have it visible
 * in the toplevel RPC server code.
 */
        f_print(fout, "static\n");
        f_print(fout, "void _msgout(const 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, \"%%s\", msg);\n");
        f_print(fout, "\telse\n");
        f_print(fout,
                "\t\t(void) fprintf(stderr, \"%%s\\n\", msg);\n");
        f_print(fout, "#else\n");
        f_print(fout, "\tsyslog(LOG_ERR, \"%%s\", msg);\n");
        f_print(fout, "#endif\n");
        f_print(fout, "}\n");
}

/*
 * Write the timeout function
 */
static void
write_timeout_func(void)
{
        if (!timerflag)
                return;

        f_print(fout, "\n");
        f_print(fout, "static void\n");
        f_print(fout, "closedown(int sig)\n");
        f_print(fout, "{\n");
        if (mtflag)
                f_print(fout, "\tpthread_mutex_lock(&_svcstate_lock);\n");
        f_print(fout, "\tif (_rpcsvcstate == _IDLE) {\n");
        f_print(fout, "\t\textern fd_set svc_fdset;\n");
        f_print(fout, "\t\tstatic int size;\n");
        f_print(fout, "\t\tint i, openfd;\n");
        if (tirpcflag && pmflag) {
                f_print(fout, "\t\tstruct t_info tinfo;\n\n");
                f_print(fout,
                        "\t\tif (!t_getinfo(0, &tinfo) && (tinfo.servtype == T_CLTS))\n");
        } else {
                f_print(fout, "\n\t\tif (_rpcfdtype == SOCK_DGRAM)\n");
        }
        f_print(fout, "\t\t\texit(0);\n");
        f_print(fout, "\t\tif (size == 0) {\n");
        if (tirpcflag) {
                f_print(fout, "\t\t\tstruct rlimit rl;\n\n");
                f_print(fout, "\t\t\trl.rlim_max = 0;\n");
                f_print(fout, "\t\t\tif (getrlimit(RLIMIT_NOFILE, &rl) == -1)\n");
                f_print(fout, "\t\t\t\treturn;\n");
                f_print(fout, "\t\t\tif ((size = rl.rlim_max) == 0) {\n");
                
                if (mtflag)
                        f_print(fout, "\t\t\t\tpthread_mutex_unlock(&_svcstate_lock);\n");

                f_print(fout, "\t\t\t\treturn;\n\t\t\t}\n");
        } else {
                f_print(fout, "\t\t\tsize = getdtablesize();\n");
        }
        f_print(fout, "\t\t}\n");
        f_print(fout,
                "\t\tfor (i = 0, openfd = 0; i < size && openfd < 2; i++)\n");
        f_print(fout, "\t\t\tif (FD_ISSET(i, &svc_fdset))\n");
        f_print(fout, "\t\t\t\topenfd++;\n");
        f_print(fout, "\t\tif (openfd <= 1)\n");
        f_print(fout, "\t\t\texit(0);\n");
        f_print(fout, "\t}\n");
        f_print(fout, "\tif (_rpcsvcstate == _SERVED)\n");
        f_print(fout, "\t\t_rpcsvcstate = _IDLE;\n\n");
        if (mtflag)
                f_print(fout, "\tpthread_mutex_unlock(&_svcstate_lock);\n");

        f_print(fout, "\t(void) signal(SIGALRM, closedown);\n");
        f_print(fout, "\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n");
        f_print(fout, "}\n");

}

/*
 * Write the most of port monitor support
 */
static void
write_pm_most(const char *infile, int netflag)
{
        list *l;
        definition *def;
        version_list *vp;

        if (tirpc_socket) {
                f_print(fout,
                "\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n");
                f_print(fout, "\t\tsocklen_t ssize = sizeof (int);\n");
        } else {
                f_print(fout, "\tif (!ioctl(0, I_LOOK, mname) &&\n");
                f_print(fout, "\t\t(!strcmp(mname, \"sockmod\") ||");
                f_print(fout, " !strcmp(mname, \"timod\"))) {\n");
        }
        f_print(fout, "\t\tchar *netid;\n");
        if (!netflag) { /* Not included by -n option */
                f_print(fout, "\t\tstruct netconfig *nconf = NULL;\n");
                f_print(fout, "\t\tSVCXPRT *%s;\n", TRANSP);
        }
        if (timerflag)
                f_print(fout, "\t\tint pmclose;\n");
/*
 *  Not necessary, defined in /usr/include/stdlib
 *  f_print(fout, "\t\textern char *getenv();\n");
 */
        f_print(fout, "\n");
        if (tirpc_socket) {
                f_print(fout, "\t\tif (saddr.ss_family != AF_INET &&\n");
                f_print(fout, "\t\t    saddr.ss_family != AF_INET6)\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\t_rpcpmstart = 1;\n");
        open_log_file(infile, "\t\t");
        f_print(fout, "\n\t\tif ((netid = \
getenv(\"NLSPROVIDER\")) == NULL) {\n");

        if (timerflag) {
                f_print(fout, "\t\t/* started from inetd */\n");
                f_print(fout, "\t\t\tpmclose = 1;\n");
        }
        f_print(fout,
                "\t\t} else {\n");
        f_print(fout, "\t\t\tif ((nconf = getnetconfigent(netid)) == NULL)\n");
        sprintf(_errbuf, "cannot get transport info");
        print_err_message("\t\t\t\t");
       if (timerflag) {
                if (tirpc_socket)
                        f_print(fout, "\n\t\t\tpmclose = 1;\t/* XXX */\n");
                else
                        f_print(fout,
                            "\n\t\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n");
        }
        f_print(fout, "\t\t}\n");
        /*
         * A kludgy support for inetd services. Inetd only works with
         * sockmod, and RPC works only with timod, hence all this jugglery
         */
        if (!tirpc_socket) {
                f_print(fout, "\t\tif (strcmp(mname, \"sockmod\") == 0) {\n");
                f_print(fout, "\t\t\tif (ioctl(0, I_POP, 0) || ");
                f_print(fout, "ioctl(0, I_PUSH, \"timod\")) {\n");
                sprintf(_errbuf, "could not get the right module");
                print_err_message("\t\t\t\t");
                f_print(fout, "\t\t\t\texit(1);\n");
                f_print(fout, "\t\t\t}\n");
                f_print(fout, "\t\t}\n");
        }
        if (tirpcflag) {
                f_print(fout,
                "\t\tif ((%s = svc_tli_create(0, nconf, NULL, \
                RPC_MAXDATASIZE, RPC_MAXDATASIZE)) \
                == NULL) {\n",
                TRANSP);
        } else {
                f_print(fout,
                    "\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) \
                    == NULL) {\n",
                    TRANSP);
        }
        sprintf(_errbuf, "cannot create server handle");
        print_err_message("\t\t\t");
        f_print(fout, "\t\t\texit(1);\n");
        f_print(fout, "\t\t}\n");
        f_print(fout, "\t\tif (nconf)\n");
        f_print(fout, "\t\t\tfreenetconfigent(nconf);\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\tif (!svc_reg(%s, %s, %s, ",
                                TRANSP, def->def_name, vp->vers_name);
                        pvname(def->def_name, vp->vers_num);
                        f_print(fout, ", 0)) {\n");
                        (void) sprintf(_errbuf, "unable to register (%s, %s).",
                                        def->def_name, vp->vers_name);
                        print_err_message("\t\t\t");
                        f_print(fout, "\t\t\texit(1);\n");
                        f_print(fout, "\t\t}\n");
                }
        }
        if (timerflag) {
                f_print(fout, "\t\tif (pmclose) {\n");
                f_print(fout, "\t\t\t(void) signal(SIGALRM, closedown);\n");
                f_print(fout, "\t\t\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n");
                f_print(fout, "\t\t}\n");
        }
        f_print(fout, "\t\tsvc_run();\n");
        f_print(fout, "\t\texit(1);\n");
        f_print(fout, "\t\t/* NOTREACHED */\n");
        f_print(fout, "\t}");
}

/*
 * Support for backgrounding the server if self started.
 */
static void
write_rpc_svc_fg(const char *infile, const char *sp)
{
        f_print(fout, "#ifndef RPC_SVC_FG\n");
        f_print(fout, "%sint size;\n", sp);
        if (tirpcflag)
                f_print(fout, "%sstruct rlimit rl;\n", sp);
        if (inetdflag)
                f_print(fout, "%sint pid, i;\n\n", sp);
        f_print(fout, "%spid = fork();\n", sp);
        f_print(fout, "%sif (pid < 0) {\n", sp);
        f_print(fout, "%s\tperror(\"cannot fork\");\n", sp);
        f_print(fout, "%s\texit(1);\n", sp);
        f_print(fout, "%s}\n", sp);
        f_print(fout, "%sif (pid)\n", sp);
        f_print(fout, "%s\texit(0);\n", sp);
        /* get number of file descriptors */
        if (tirpcflag) {
                f_print(fout, "%srl.rlim_max = 0;\n", sp);
                f_print(fout, "%sif (getrlimit(RLIMIT_NOFILE, &rl) == -1) {\n",
                    sp);
                f_print(fout, "%s\tperror(\"getrlimit\");\n", sp);
                f_print(fout, "%s\texit(1);\n", sp);
                f_print(fout, "%s}\n", sp);
                f_print(fout, "%sif ((size = rl.rlim_max) == 0)\n", sp);
                f_print(fout, "%s\texit(1);\n", sp);
        } else {
                f_print(fout, "%ssize = getdtablesize();\n", sp);
        }

        f_print(fout, "%sfor (i = 0; i < size; i++)\n", sp);
        f_print(fout, "%s\t(void) close(i);\n", sp);
        /* Redirect stderr and stdout to console */
        f_print(fout, "%si = open(\"/dev/console\", 2);\n", sp);
        f_print(fout, "%s(void) dup2(i, 1);\n", sp);
        f_print(fout, "%s(void) dup2(i, 2);\n", sp);
        /* This removes control of the controlling terminal */
        if (tirpcflag)
                f_print(fout, "%ssetsid();\n", sp);
        else {
                f_print(fout, "%si = open(\"/dev/tty\", 2);\n", sp);
                f_print(fout, "%sif (i >= 0) {\n", sp);
                f_print(fout,
                        "%s\t(void) ioctl(i, TIOCNOTTY, (char *)NULL);\n", sp);
                f_print(fout, "%s\t(void) close(i);\n", sp);
                f_print(fout, "%s}\n", sp);
        }
        if (!logflag)
                open_log_file(infile, sp);
        f_print(fout, "#endif\n");
        if (logflag)
                open_log_file(infile, sp);
}

static void
open_log_file(const char *infile, const char *sp)
{
        char *s;

        s = strrchr(infile, '.');
        if (s)
                *s = '\0';
        f_print(fout, "%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, infile);
        if (s)
                *s = '.';
}




/*
 * 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, "udp"))
                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");
}