/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
 * University Copyright- Copyright (c) 1982, 1986, 1988
 * The Regents of the University of California
 * All Rights Reserved
 *
 * University Acknowledgment- Portions of this document are derived from
 * software developed by the University of California, Berkeley, and its
 * contributors.
 */

/*
 * rpc_main.c, Top level of the RPC protocol compiler.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/file.h>
#include <sys/stat.h>
#include "rpc_parse.h"
#include "rpc_util.h"
#include "rpc_scan.h"


extern void write_sample_svc(definition *);
extern int write_sample_clnt(definition *);
extern void write_sample_clnt_main(void);
extern void reinitialize(void);
extern void crash(void);
extern void add_type(int, char *);
extern void add_sample_msg(void);

static void svc_output(char *, char *, int, char *);
static void clnt_output(char *, char *, int, char *);
static void c_output(char *, char *, int, char *);
static void mkfile_output(struct commandline *);
static void c_initialize(void);
static void h_output(char *, char *, int, char *);
static void s_output(int, char *[], char *, char *, int, char *, int, int);
static void l_output(char *, char *, int, char *);
static void t_output(char *, char *, int, char *);
static int do_registers(int, char *[]);
static uint_t parseargs(int, char *[], struct commandline *);
static void usage(void);
static void version_info(void);
static void options_usage(void);

#define EXTEND          1               /* alias for TRUE */
#define DONT_EXTEND     0               /* alias for FALSE */

#define SUNOS_CPP "/usr/lib/cpp"
static int cppDefined = 0;      /* explicit path for C preprocessor */


static char *cmdname;

static char *svcclosetime = "120";
static char *CPP = SUNOS_CPP;
static char CPPFLAGS[] = "-C";
static char pathbuf[MAXPATHLEN + 1];
static char *allv[] = {
        "rpcgen", "-s", "udp", "-s", "tcp",
};
static int allc = sizeof (allv)/sizeof (allv[0]);
static char *allnv[] = {
        "rpcgen", "-s", "netpath",
};
static int allnc = sizeof (allnv)/sizeof (allnv[0]);

/*
 * machinations for handling expanding argument list
 */
static void addarg(char *);     /* add another argument to the list */
static void putarg(int, char *); /* put argument at specified location  */
static void clear_args(void);   /* clear argument list */
static void checkfiles(char *, char *); /* check if out file already exists */


#define ARGLISTLEN      20
#define FIXEDARGS       2

static char *arglist[ARGLISTLEN];
static int argcount = FIXEDARGS;


int nonfatalerrors;     /* errors */
int inetdflag;  /* Support for inetd  is now the default */
int pmflag;             /* Support for port monitors */
int logflag;            /* Use syslog instead of fprintf for errors */
int tblflag;            /* Support for dispatch table file */
int mtflag = 0;         /* Support for MT */
int mtauto = 0;         /* Enable automatic mode */
int rflag = 1;          /* Eliminate tail recursion from structures */
#define INLINE 5
/* length at which to start doing an inline */

int inlinelen = INLINE;
/*
 * Length at which to start doing an inline. INLINE = default
 * if 0, no xdr_inline code
 */

int indefinitewait;     /* If started by port monitors, hang till it wants */
int exitnow;            /* If started by port monitors, exit after the call */
int timerflag;          /* TRUE if !indefinite && !exitnow */
int newstyle;           /* newstyle of passing arguments (by value) */
int Cflag = 0;          /* ANSI C syntax */
int CCflag = 0;         /* C++ files */
static int allfiles;   /* generate all files */
int tirpcflag = 1;    /* generating code for tirpc, by default */
xdrfunc *xdrfunc_head = NULL; /* xdr function list */
xdrfunc *xdrfunc_tail = NULL; /* xdr function list */
pid_t childpid;


int
main(int argc, char *argv[])
{
        struct commandline cmd;

        (void) memset(&cmd, 0, sizeof (struct commandline));
        clear_args();
        if (!parseargs(argc, argv, &cmd))
                usage();
        /*
         * Only the client and server side stubs are likely to be customized,
         *  so in that case only, check if the outfile exists, and if so,
         *  print an error message and exit.
         */
        if (cmd.Ssflag || cmd.Scflag || cmd.makefileflag)
                checkfiles(cmd.infile, cmd.outfile);
        else
                checkfiles(cmd.infile, NULL);

        if (cmd.cflag) {
                c_output(cmd.infile, "-DRPC_XDR", DONT_EXTEND, cmd.outfile);
        } else if (cmd.hflag) {
                h_output(cmd.infile, "-DRPC_HDR", DONT_EXTEND, cmd.outfile);
        } else if (cmd.lflag) {
                l_output(cmd.infile, "-DRPC_CLNT", DONT_EXTEND, cmd.outfile);
        } else if (cmd.sflag || cmd.mflag || (cmd.nflag)) {
                s_output(argc, argv, cmd.infile, "-DRPC_SVC", DONT_EXTEND,
                    cmd.outfile, cmd.mflag, cmd.nflag);
        } else if (cmd.tflag) {
                t_output(cmd.infile, "-DRPC_TBL", DONT_EXTEND, cmd.outfile);
        } else if (cmd.Ssflag) {
                svc_output(cmd.infile, "-DRPC_SERVER", DONT_EXTEND,
                    cmd.outfile);
        } else if (cmd.Scflag) {
                clnt_output(cmd.infile, "-DRPC_CLIENT", DONT_EXTEND,
                    cmd.outfile);
        } else if (cmd.makefileflag) {
                mkfile_output(&cmd);
        } else {
                /* the rescans are required, since cpp may effect input */
                c_output(cmd.infile, "-DRPC_XDR", EXTEND, "_xdr.c");
                reinitialize();
                h_output(cmd.infile, "-DRPC_HDR", EXTEND, ".h");
                reinitialize();
                l_output(cmd.infile, "-DRPC_CLNT", EXTEND, "_clnt.c");
                reinitialize();
                if (inetdflag || !tirpcflag)
                        s_output(allc, allv, cmd.infile, "-DRPC_SVC", EXTEND,
                            "_svc.c", cmd.mflag, cmd.nflag);
                else
                        s_output(allnc, allnv, cmd.infile, "-DRPC_SVC",
                            EXTEND, "_svc.c", cmd.mflag, cmd.nflag);
                if (tblflag) {
                        reinitialize();
                        t_output(cmd.infile, "-DRPC_TBL", EXTEND, "_tbl.i");
                }

                if (allfiles) {
                        reinitialize();
                        svc_output(cmd.infile, "-DRPC_SERVER", EXTEND,
                            "_server.c");
                        reinitialize();
                        clnt_output(cmd.infile, "-DRPC_CLIENT", EXTEND,
                            "_client.c");

                }
                if (allfiles || (cmd.makefileflag == 1)) {
                        reinitialize();
                        mkfile_output(&cmd);
                }

        }
        return (nonfatalerrors);
}


/*
 * add extension to filename
 */
static char *
extendfile(char *file, char *ext)
{
        char *res;
        char *p;

        res = malloc(strlen(file) + strlen(ext) + 1);
        if (res == NULL)
                abort();
        p = strrchr(file, '.');
        if (p == NULL)
                p = file + strlen(file);
        (void) strcpy(res, file);
        (void) strcpy(res + (p - file), ext);
        return (res);
}

/*
 * Open output file with given extension
 */
static void
open_output(char *infile, char *outfile)
{

        if (outfile == NULL) {
                fout = stdout;
                return;
        }

        if (infile != NULL && streq(outfile, infile)) {
                f_print(stderr,
                    "%s: %s already exists.  No output generated.\n",
                    cmdname, infile);
                crash();
        }
        fout = fopen(outfile, "w");
        if (fout == NULL) {
                f_print(stderr, "%s: unable to open ", cmdname);
                perror(outfile);
                crash();
        }
        record_open(outfile);

}

static void
add_warning(void)
{
        f_print(fout, "/*\n");
        f_print(fout, " * Please do not edit this file.\n");
        f_print(fout, " * It was generated using rpcgen.\n");
        f_print(fout, " */\n\n");
}

/* clear list of arguments */
static void
clear_args(void)
{
        int i;

        for (i = FIXEDARGS; i < ARGLISTLEN; i++)
                arglist[i] = NULL;
        argcount = FIXEDARGS;
}

/* make sure that a CPP exists */
static void
find_cpp(void)
{
        struct stat buf;

        if (stat(CPP, &buf) < 0)  { /* SVR4 or explicit cpp does not exist */
                if (cppDefined) {
                        (void) fprintf(stderr,
                            "cannot find C preprocessor: %s \n", CPP);
                        crash();
                } else {        /* try the other one */
                        CPP = SUNOS_CPP;
                        if (stat(CPP, &buf) < 0) { /* can't find any cpp */
                                (void) fprintf(stderr,
                "cannot find any C preprocessor (cpp)\n");
                                crash();
                        }
                }
        }
}

/*
 * Open input file with given define for C-preprocessor
 */
static void
open_input(char *infile, char *define)
{
        int pd[2];

        infilename = (infile == NULL) ? "<stdin>" : infile;
        (void) pipe(pd);
        switch (childpid = fork()) {
        case 0:
                find_cpp();
                putarg(0, CPP);
                putarg(1, CPPFLAGS);
                addarg(define);
                if (infile)
                        addarg(infile);
                addarg((char *)NULL);
                (void) close(1);
                (void) dup2(pd[1], 1);
                (void) close(pd[0]);
                (void) execv(arglist[0], arglist);
                perror("execv");
                exit(1);
                /* NOTREACHED */
        case -1:
                perror("fork");
                exit(1);
        }
        (void) close(pd[1]);
        fin = fdopen(pd[0], "r");
        if (fin == NULL) {
                f_print(stderr, "%s: ", cmdname);
                perror(infilename);
                crash();
        }
}

/* valid tirpc nettypes */
static char *valid_ti_nettypes[] = {
        "netpath",
        "visible",
        "circuit_v",
        "datagram_v",
        "circuit_n",
        "datagram_n",
        "udp",
        "tcp",
        "raw",
        NULL
};

/* valid inetd nettypes */
static char *valid_i_nettypes[] = {
        "udp",
        "tcp",
        NULL
};

static int
check_nettype(char *name, char *list_to_check[])
{
        int i;
        for (i = 0; list_to_check[i] != NULL; i++) {
                if (strcmp(name, list_to_check[i]) == 0) {
                        return (1);
                }
        }
        f_print(stderr, "illegal nettype :\'%s\'\n", name);
        return (0);
}

static char *
file_name(char *file, char *ext)
{
        char *temp;
        temp = extendfile(file, ext);

        if (access(temp, F_OK) != -1)
                return (temp);
        else
                return ((char *)" ");
}


static void
c_output(char *infile, char *define, int extend, char *outfile)
{
        definition *def;
        char *include;
        char *outfilename;
        long tell;

        c_initialize();
        open_input(infile, define);
        outfilename = extend ? extendfile(infile, outfile) : outfile;
        open_output(infile, outfilename);
        add_warning();
        if (infile && (include = extendfile(infile, ".h"))) {
                f_print(fout, "#include \"%s\"\n", include);
                free(include);
                /* .h file already contains rpc/rpc.h */
        } else
                f_print(fout, "#include <rpc/rpc.h>\n");
        /*
         * Include stdlib.h to support mem_alloc calls.
         */
        f_print(fout, "\n#ifndef _KERNEL\n");
        f_print(fout, "#include <stdlib.h>\n");
        f_print(fout, "#endif /* !_KERNEL */\n\n");
        tell = ftell(fout);
        while (def = get_definition()) {
                emit(def);
        }
        if (extend && tell == ftell(fout)) {
                (void) unlink(outfilename);
        }
}


static void
c_initialize(void)
{
        /*
         * add all the starting basic types.
         * We may need to add some derived types
         * if we need to generate INLINE macros.
         * These types are defined in rpc/types.h
         */
        add_type(1, "int");
        add_type(1, "long");
        add_type(1, "short");
        add_type(1, "bool");
        add_type(1, "u_int");
        add_type(1, "u_long");
        add_type(1, "u_short");
        add_type(1, "rpcprog_t");
        add_type(1, "rpcvers_t");
        add_type(1, "rpcproc_t");
        add_type(1, "rpcprot_t");
        add_type(1, "rpcport_t");
}

char rpcgen_table_dcl1[] = "struct rpcgen_table {\n";

char rpcgen_table_dcl2[] = "\txdrproc_t\txdr_arg;\n"
                                "\tunsigned\tlen_arg;\n"
                                "\txdrproc_t\txdr_res;\n"
                                "\tunsigned\tlen_res;\n"
                                "};\n";

char rpcgen_table_proc[] = "\tvoid\t*(*proc)();\n";

char rpcgen_table_proc_b[] = "\tchar\t*(*proc)();\n";


char *
generate_guard(char *pathname)
{
        char *filename, *guard, *tmp;

        filename = strrchr(pathname, '/');  /* find last component */
        filename = ((filename == 0) ? pathname : filename+1);
        guard = extendfile(filename, "_H_RPCGEN");

        /*
         * Guard must be an ANSI C identifier composed of
         * upper case letters, digits, or '_'.
         * Convert invalid characters to '_'.
         */
        for (tmp = guard; *tmp; tmp++) {
                if (!isalpha(*tmp) && !isdigit(*tmp)) {
                        *tmp = '_';
                        continue;
                }
                if (islower(*tmp))
                        *tmp = toupper(*tmp);
        }

        /*
         * The first character must be a letter; the underscore '_'
         * counts as a letter.
         */
        if (!isalpha(guard[0]))
                guard[0] = '_';

        return (guard);
}

/*
 * Compile into an XDR header file
 */


static void
h_output(char *infile, char *define, int extend, char *outfile)
{
        definition *def;
        char *outfilename;
        long tell;
        char *guard;
        list *l;
        xdrfunc *xdrfuncp;
        int i;

        open_input(infile, define);
        outfilename =  extend ? extendfile(infile, outfile) : outfile;
        open_output(infile, outfilename);
        add_warning();
        if (outfilename || infile)
                guard = generate_guard(outfilename ? outfilename: infile);
        else
                guard = "STDIN_";

        f_print(fout, "#ifndef _%s\n#define     _%s\n\n", guard, guard);

        f_print(fout, "#include <rpc/rpc.h>\n");

        if (mtflag) {
                f_print(fout, "#ifndef _KERNEL\n");
                f_print(fout, "#include <synch.h>\n");
                f_print(fout, "#include <thread.h>\n");
                f_print(fout, "#endif /* !_KERNEL */\n");
        };

        /* put the C++ support */
        if (Cflag && !CCflag) {
                f_print(fout, "\n#ifdef __cplusplus\n");
                f_print(fout, "extern \"C\" {\n");
                f_print(fout, "#endif\n\n");
        }

        /* put in a typedef for quadprecision. Only with Cflag */

        /*
         * declaration of struct rpcgen_table must go before
         *  the definition of arrays like *_1_table[]
         */
        if (tblflag) {
                f_print(fout, rpcgen_table_dcl1);
                if (tirpcflag)
                        f_print(fout, rpcgen_table_proc);
                else
                        f_print(fout, rpcgen_table_proc_b);
                f_print(fout, rpcgen_table_dcl2);
        }

        tell = ftell(fout);

        /* print data definitions */
        while (def = get_definition())
                print_datadef(def);

        /*
         * print function declarations.
         *  Do this after data definitions because they might be used as
         *  arguments for functions
         */
        for (l = defined; l != NULL; l = l->next)
                print_funcdef(l->val);
        /* Now  print all xdr func declarations */
        if (xdrfunc_head != NULL) {
                f_print(fout, "\n/* the xdr functions */\n");

                if (CCflag) {
                        f_print(fout, "\n#ifdef __cplusplus\n");
                        f_print(fout, "extern \"C\" {\n");
                        f_print(fout, "#endif\n");
                }

                if (!Cflag) {
                        xdrfuncp = xdrfunc_head;
                        while (xdrfuncp != NULL) {
                                print_xdr_func_def(xdrfuncp->name,
                                    xdrfuncp->pointerp, 2);
                                xdrfuncp = xdrfuncp->next;
                        }
                } else {
                        for (i = 1; i < 3; i++) {
                                if (i == 1)
                                        f_print(fout,
"\n#if defined(__STDC__) || defined(__cplusplus)\n");
                                else
                                        f_print(fout, "\n#else /* K&R C */\n");

                                xdrfuncp = xdrfunc_head;
                                while (xdrfuncp != NULL) {
                                        print_xdr_func_def(xdrfuncp->name,
                                            xdrfuncp->pointerp, i);
                                        xdrfuncp = xdrfuncp->next;
                                }
                        }
                        f_print(fout, "\n#endif /* K&R C */\n");
                }
        }

        if (extend && tell == ftell(fout)) {
                (void) unlink(outfilename);
        }

        if (Cflag) {
                f_print(fout, "\n#ifdef __cplusplus\n");
                f_print(fout, "}\n");
                f_print(fout, "#endif\n");
        }

        f_print(fout, "\n#endif /* !_%s */\n", guard);
}

/*
 * Compile into an RPC service
 */
static void
s_output(int argc, char *argv[], char *infile, char *define, int extend,
                                        char *outfile, int nomain, int netflag)
{
        char *include;
        definition *def;
        int foundprogram = 0;
        char *outfilename;

        open_input(infile, define);
        outfilename = extend ? extendfile(infile, outfile) : outfile;
        open_output(infile, outfilename);
        add_warning();
        if (infile && (include = extendfile(infile, ".h"))) {
                f_print(fout, "#include \"%s\"\n", include);
                free(include);
        } else
                f_print(fout, "#include <rpc/rpc.h>\n");

        f_print(fout, "#include <stdio.h>\n");
        f_print(fout, "#include <stdlib.h> /* getenv, exit */\n");
        f_print(fout, "#include <signal.h>\n");

        if (Cflag) {
                f_print(fout,
                "#include <rpc/pmap_clnt.h> /* for pmap_unset */\n");
                f_print(fout, "#include <string.h> /* strcmp */\n");
        }
        if (strcmp(svcclosetime, "-1") == 0)
                indefinitewait = 1;
        else if (strcmp(svcclosetime, "0") == 0)
                exitnow = 1;
        else if (inetdflag || pmflag)
                timerflag = 1;

        if (!tirpcflag && inetdflag)
                f_print(fout, "#include <sys/termios.h> /* TIOCNOTTY */\n");
        if (Cflag && (inetdflag || pmflag))
                if (tirpcflag)
                        f_print(fout, "#include <unistd.h> /* setsid */\n");
        if (tirpcflag)
                f_print(fout, "#include <sys/types.h>\n");

        f_print(fout, "#include <memory.h>\n");
        f_print(fout, "#include <stropts.h>\n");
        if (inetdflag || !tirpcflag) {
                f_print(fout, "#include <sys/socket.h>\n");
                f_print(fout, "#include <netinet/in.h>\n");
                f_print(fout, "#include <rpc/svc_soc.h>\n");
        }

        if ((netflag || pmflag) && tirpcflag && !nomain)
                f_print(fout, "#include <netconfig.h>\n");
        if (tirpcflag)
                f_print(fout, "#include <sys/resource.h> /* rlimit */\n");
        if (logflag || inetdflag || pmflag)
                f_print(fout, "#include <syslog.h>\n");

        /* for ANSI-C */
        if (Cflag)
                f_print(fout,
                    "\n#ifndef SIG_PF\n#define  SIG_PF void(*)\
(int)\n#endif\n");

        f_print(fout, "\n#ifdef DEBUG\n#define  RPC_SVC_FG\n#endif\n");
        if (timerflag)
                f_print(fout, "\n#define        _RPCSVC_CLOSEDOWN %s\n",
                    svcclosetime);
        while (def = get_definition())
                foundprogram |= (def->def_kind == DEF_PROGRAM);
        if (extend && !foundprogram) {
                (void) unlink(outfilename);
                return;
        }
        write_most(infile, netflag, nomain);
        if (!nomain) {
                if (!do_registers(argc, argv)) {
                        if (outfilename)
                                (void) unlink(outfilename);
                        usage();
                }
                write_rest();
        }
}

/*
 * generate client side stubs
 */
static void
l_output(char *infile, char *define, int extend, char *outfile)
{
        char *include;
        definition *def;
        int foundprogram = 0;
        char *outfilename;

        open_input(infile, define);
        outfilename = extend ? extendfile(infile, outfile) : outfile;
        open_output(infile, outfilename);
        add_warning();
        if (Cflag)
                f_print(fout, "#include <memory.h> /* for memset */\n");
        if (infile && (include = extendfile(infile, ".h"))) {
                f_print(fout, "#include \"%s\"\n", include);
                free(include);
        } else
                f_print(fout, "#include <rpc/rpc.h>\n");

        f_print(fout, "#ifndef _KERNEL\n");
        f_print(fout, "#include <stdio.h>\n");
        f_print(fout, "#include <stdlib.h> /* getenv, exit */\n");
        f_print(fout, "#endif /* !_KERNEL */\n");

        while (def = get_definition())
                foundprogram |= (def->def_kind == DEF_PROGRAM);
        if (extend && !foundprogram) {
                (void) unlink(outfilename);
                return;
        }
        write_stubs();
}

/*
 * generate the dispatch table
 */
static void
t_output(char *infile, char *define, int extend, char *outfile)
{
        definition *def;
        int foundprogram = 0;
        char *outfilename;

        open_input(infile, define);
        outfilename = extend ? extendfile(infile, outfile) : outfile;
        open_output(infile, outfilename);
        add_warning();
        while (def = get_definition()) {
                foundprogram |= (def->def_kind == DEF_PROGRAM);
        }
        if (extend && !foundprogram) {
                (void) unlink(outfilename);
                return;
        }
        write_tables();
}

/* sample routine for the server template */
static void
svc_output(char *infile, char *define, int extend, char *outfile)
{
        definition *def;
        char *include;
        char *outfilename;
        long tell;
        open_input(infile, define);
        outfilename = extend ? extendfile(infile, outfile) : outfile;
        checkfiles(infile, outfilename);
        /*
         * Check if outfile already exists.
         * if so, print an error message and exit
         */
        open_output(infile, outfilename);
        add_sample_msg();

        if (infile && (include = extendfile(infile, ".h"))) {
                f_print(fout, "#include \"%s\"\n", include);
                free(include);
        } else {
                f_print(fout, "#include <rpc/rpc.h>\n");
        }

        f_print(fout, "#include <stdio.h>\n");
        f_print(fout, "#include <stdlib.h> /* getenv, exit */\n");
        f_print(fout, "#include <signal.h>\n");

        tell = ftell(fout);
        while (def = get_definition())
                write_sample_svc(def);
        if (extend && tell == ftell(fout))
                (void) unlink(outfilename);
}

/* sample main routine for client */
static void
clnt_output(char *infile, char *define, int extend, char *outfile)
{
        definition *def;
        char *include;
        char *outfilename;
        long tell;
        int has_program = 0;

        open_input(infile, define);
        outfilename = extend ? extendfile(infile, outfile) : outfile;
        checkfiles(infile, outfilename);
        /*
         * Check if outfile already exists.
         * if so, print an error message and exit
         */

        open_output(infile, outfilename);
        add_sample_msg();
        if (infile && (include = extendfile(infile, ".h"))) {
                f_print(fout, "#include \"%s\"\n", include);
                free(include);
        } else
                f_print(fout, "#include <rpc/rpc.h>\n");

        f_print(fout, "#include <stdio.h>\n");
        f_print(fout, "#include <stdlib.h> /* getenv, exit */\n");

        tell = ftell(fout);
        while (def = get_definition())
                has_program += write_sample_clnt(def);

        if (has_program)
                write_sample_clnt_main();

        if (extend && tell == ftell(fout))
                (void) unlink(outfilename);
}


static void
mkfile_output(struct commandline *cmd)
{
        char *mkfilename, *clientname, *clntname, *xdrname, *hdrname;
        char *servername, *svcname, *servprogname, *clntprogname;
        char *temp;

        svcname = file_name(cmd->infile, "_svc.c");
        clntname = file_name(cmd->infile, "_clnt.c");
        xdrname = file_name(cmd->infile, "_xdr.c");
        hdrname = file_name(cmd->infile, ".h");


        if (allfiles) {
                servername = extendfile(cmd->infile, "_server.c");
                clientname = extendfile(cmd->infile, "_client.c");
        } else {
                servername = " ";
                clientname = " ";
        }
        servprogname = extendfile(cmd->infile, "_server");
        clntprogname = extendfile(cmd->infile, "_client");

        if (allfiles) {
                mkfilename = malloc(strlen("makefile.") +
                    strlen(cmd->infile) + 1);
                if (mkfilename == NULL) {
                        f_print(stderr, "Out of memory!\n");
                        return;
                }
                temp = (char *)rindex(cmd->infile, '.');
                (void) strcpy(mkfilename, "makefile.");
                (void) strncat(mkfilename, cmd->infile,
                    (temp - cmd->infile));
        } else
                mkfilename = cmd->outfile;


        checkfiles(NULL, mkfilename);
        open_output(NULL, mkfilename);

        f_print(fout, "\n# This is a template makefile generated\
                by rpcgen \n");

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

        f_print(fout, "CLIENT = %s\nSERVER = %s\n\n",
            clntprogname, servprogname);
        f_print(fout, "SOURCES_CLNT.c = \nSOURCES_CLNT.h = \n");
        f_print(fout, "SOURCES_SVC.c = \nSOURCES_SVC.h = \n");
        f_print(fout, "SOURCES.x = %s\n\n", cmd->infile);
        f_print(fout, "TARGETS_SVC.c = %s %s %s \n",
            svcname, servername, xdrname);
        f_print(fout, "TARGETS_CLNT.c = %s %s %s \n",
            clntname, clientname, xdrname);
        f_print(fout, "TARGETS = %s %s %s %s %s %s\n\n",
            hdrname, xdrname, clntname,
            svcname, clientname, servername);

        f_print(fout, "OBJECTS_CLNT = $(SOURCES_CLNT.c:%%.c=%%.o) "
            "$(TARGETS_CLNT.c:%%.c=%%.o) ");

        f_print(fout, "\nOBJECTS_SVC = $(SOURCES_SVC.c:%%.c=%%.o) "
            "$(TARGETS_SVC.c:%%.c=%%.o) ");


        f_print(fout, "\n# Compiler flags \n");
        if (mtflag)
                f_print(fout, "\nCPPFLAGS += -D_REENTRANT\n"
                    "CFLAGS += -g\nLDLIBS += -lnsl\n");
        else
                f_print(fout, "\nCFLAGS += -g \nLDLIBS += -lnsl\n");
        f_print(fout, "RPCGENFLAGS = \n");

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

        f_print(fout, "all : $(CLIENT) $(SERVER)\n\n");
        f_print(fout, "$(TARGETS) : $(SOURCES.x) \n");
        f_print(fout, "\trpcgen $(RPCGENFLAGS) $(SOURCES.x)\n\n");
        f_print(fout, "$(OBJECTS_CLNT) : $(SOURCES_CLNT.c) $(SOURCES_CLNT.h) \
$(TARGETS_CLNT.c) \n\n");

        f_print(fout, "$(OBJECTS_SVC) : $(SOURCES_SVC.c) $(SOURCES_SVC.h) \
$(TARGETS_SVC.c) \n\n");
        f_print(fout, "$(CLIENT) : $(OBJECTS_CLNT) \n");
        f_print(fout, "\t$(LINK.c) -o $(CLIENT) $(OBJECTS_CLNT) \
$(LDLIBS) \n\n");
        f_print(fout, "$(SERVER) : $(OBJECTS_SVC) \n");
        f_print(fout, "\t$(LINK.c) -o $(SERVER) $(OBJECTS_SVC) $(LDLIBS)\n\n ");
        f_print(fout, "clean:\n\t $(RM) core $(TARGETS) $(OBJECTS_CLNT) \
$(OBJECTS_SVC) $(CLIENT) $(SERVER)\n\n");
}


/*
 * Perform registrations for service output
 * Return 0 if failed; 1 otherwise.
 */
static int
do_registers(int argc, char *argv[])
{
        int i;

        if (inetdflag || !tirpcflag) {
                for (i = 1; i < argc; i++) {
                        if (streq(argv[i], "-s")) {
                                if (!check_nettype(argv[i + 1],
                                    valid_i_nettypes))
                                        return (0);
                                write_inetd_register(argv[i + 1]);
                                i++;
                        }
                }
        } else {
                for (i = 1; i < argc; i++)
                        if (streq(argv[i], "-s")) {
                                if (!check_nettype(argv[i + 1],
                                    valid_ti_nettypes))
                                        return (0);
                                write_nettype_register(argv[i + 1]);
                                i++;
                        } else if (streq(argv[i], "-n")) {
                                write_netid_register(argv[i + 1]);
                                i++;
                        }
        }
        return (1);
}

/*
 * Add another argument to the arg list
 */
static void
addarg(char *cp)
{
        if (argcount >= ARGLISTLEN) {
                f_print(stderr, "rpcgen: too many defines\n");
                crash();
                /*NOTREACHED*/
        }
        arglist[argcount++] = cp;
}

static void
putarg(int where, char *cp)
{
        if (where >= ARGLISTLEN) {
                f_print(stderr, "rpcgen: arglist coding error\n");
                crash();
                /*NOTREACHED*/
        }
        arglist[where] = cp;
}

/*
 * if input file is stdin and an output file is specified then complain
 * if the file already exists. Otherwise the file may get overwritten
 * If input file does not exist, exit with an error
 */
static void
checkfiles(char *infile, char *outfile)
{
        struct stat buf;

        if (infile) {           /* infile ! = NULL */
                if (stat(infile, &buf) < 0) {
                        perror(infile);
                        crash();
                }
        }
        if (outfile) {
                if (stat(outfile, &buf) < 0)
                        return; /* file does not exist */
                f_print(stderr,
                    "file '%s' already exists and may be overwritten\n",
                    outfile);
                crash();
        }
}

/*
 * Parse command line arguments
 */
static uint_t
parseargs(int argc, char *argv[], struct commandline *cmd)
{
        int i;
        int j;
        char c, ch;
        char flag[(1 << 8 * sizeof (char))];
        int nflags;

        cmdname = argv[0];
        cmd->infile = cmd->outfile = NULL;
        if (argc < 2)
                return (0);
        allfiles = 0;
        flag['c'] = 0;
        flag['h'] = 0;
        flag['l'] = 0;
        flag['m'] = 0;
        flag['o'] = 0;
        flag['s'] = 0;
        flag['n'] = 0;
        flag['t'] = 0;
        flag['S'] = 0;
        flag['C'] = 0;
        flag['M'] = 0;

        for (i = 1; i < argc; i++) {
                if (argv[i][0] != '-') {
                        if (cmd->infile) {
                                f_print(stderr,
        "Cannot specify more than one input file.\n");

                                return (0);
                        }
                        cmd->infile = argv[i];
                } else {
                        for (j = 1; argv[i][j] != 0; j++) {
                                c = argv[i][j];
                                switch (c) {
                                case 'a':
                                        allfiles = 1;
                                        break;
                                case 'c':
                                case 'h':
                                case 'l':
                                case 'm':
                                case 't':
                                        if (flag[c])
                                                return (0);
                                        flag[c] = 1;
                                        break;
                                case 'S':
                                        /*
                                         * sample flag: Ss or Sc.
                                         *  Ss means set flag['S'];
                                         *  Sc means set flag['C'];
                                         *  Sm means set flag['M'];
                                         */
                                        ch = argv[i][++j]; /* get next char */
                                        if (ch == 's')
                                                ch = 'S';
                                        else if (ch == 'c')
                                                ch = 'C';
                                        else if (ch == 'm')
                                                ch = 'M';
                                        else
                                                return (0);

                                        if (flag[ch])
                                                return (0);
                                        flag[ch] = 1;
                                        break;
                                case 'C': /* ANSI C syntax */
                                        Cflag = 1;
                                        ch = argv[i][j+1]; /* get next char */

                                        if (ch != 'C')
                                                break;
                                        CCflag = 1;
                                        break;
                                case 'b':
                                        /*
                                         *  Turn TIRPC flag off for
                                         *  generating backward compatible
                                         *  code
                                         */
                                        tirpcflag = 0;
                                        break;

                                case 'I':
                                        inetdflag = 1;
                                        break;
                                case 'N':
                                        newstyle = 1;
                                        break;
                                case 'L':
                                        logflag = 1;
                                        break;
                                case 'K':
                                        if (++i == argc)
                                                return (0);
                                        svcclosetime = argv[i];
                                        goto nextarg;
                                case 'T':
                                        tblflag = 1;
                                        break;
                                case 'A':
                                        mtauto = 1;
                                        /* FALLTHRU */
                                case 'M':
                                        mtflag = 1;
                                        break;
                                case 'i' :
                                        if (++i == argc)
                                                return (0);
                                        inlinelen = atoi(argv[i]);
                                        goto nextarg;
                                case 'n':
                                case 'o':
                                case 's':
                                        if (argv[i][j - 1] != '-' ||
                                            argv[i][j + 1] != 0)
                                                return (0);
                                        flag[c] = 1;
                                        if (++i == argc)
                                                return (0);
                                        if (c == 'o') {
                                                if (cmd->outfile)
                                                        return (0);
                                                cmd->outfile = argv[i];
                                        }
                                        goto nextarg;
                                case 'D':
                                        if (argv[i][j - 1] != '-')
                                                return (0);
                                        (void) addarg(argv[i]);
                                        goto nextarg;
                                case 'v':
                                        version_info();
                                        return (0);
                                case 'Y':
                                        if (++i == argc)
                                                return (0);
                                        (void) strcpy(pathbuf, argv[i]);
                                        (void) strcat(pathbuf, "/cpp");
                                        CPP = pathbuf;
                                        cppDefined = 1;
                                        goto nextarg;
                                case 'r':
                                        rflag = !rflag;
                                        break;
                                default:
                                        return (0);
                                }
                        }
                nextarg:
                        ;
                }
        }

        cmd->cflag = flag['c'];
        cmd->hflag = flag['h'];
        cmd->lflag = flag['l'];
        cmd->mflag = flag['m'];
        cmd->nflag = flag['n'];
        cmd->sflag = flag['s'];
        cmd->tflag = flag['t'];
        cmd->Ssflag = flag['S'];
        cmd->Scflag = flag['C'];
        cmd->makefileflag = flag['M'];

        if (tirpcflag) {
                if (inetdflag) {
                        f_print(stderr,
                            "Cannot use -I flag without -b flag.\n");
                        return (0);
                }
                pmflag = 1;
        } else {                /* 4.1 mode */
                pmflag = 0;     /* set pmflag only in tirpcmode */
                inetdflag = 1;  /* inetdflag is TRUE by default */
                if (cmd->nflag) { /* netid needs TIRPC */
                        f_print(stderr,
                            "Cannot use netid flag without TIRPC.\n");
                        return (0);
                }
        }

        if (newstyle && (tblflag || cmd->tflag)) {
                f_print(stderr, "Cannot use table flags with newstyle.\n");
                return (0);
        }

        /* check no conflicts with file generation flags */
        nflags = cmd->cflag + cmd->hflag + cmd->lflag + cmd->mflag +
            cmd->sflag + cmd->nflag + cmd->tflag + cmd->Ssflag +
            cmd->Scflag + cmd->makefileflag;

        if (nflags == 0) {
                if (cmd->outfile != NULL || cmd->infile == NULL)
                        return (0);
        } else if (cmd->infile == NULL &&
            (cmd->Ssflag || cmd->Scflag || cmd->makefileflag)) {
                f_print(stderr, "\"infile\" is required for template"
                    " generation flags.\n");
                return (0);
        }
        if (nflags > 1) {
                f_print(stderr,
                    "Cannot have more than one file generation flag.\n");
                return (0);
        }
        return (1);
}

static void
usage(void)
{
        f_print(stderr, "%s  (%d.%d)\n", cmdname, RPCGEN_MAJOR, RPCGEN_MINOR);
        f_print(stderr, "usage:  %s infile\n", cmdname);
        f_print(stderr, "\t%s [-abCLNTMA] [-Dname[=value]] [-i size]"
            " [-I [-K seconds]] [-Y path] infile\n", cmdname);
        f_print(stderr, "\t%s [-c | -h | -l | -m | -t | -Sc | -Ss | -Sm]"
            " [-o outfile] [infile]\n", cmdname);
        f_print(stderr, "\t%s [-s nettype]* [-o outfile] [infile]\n", cmdname);
        f_print(stderr, "\t%s [-n netid]* [-o outfile] [infile]\n", cmdname);
        options_usage();
        exit(1);
}

static void
version_info(void)
{
        f_print(stderr, "%s %d.%d\n", cmdname, RPCGEN_MAJOR, RPCGEN_MINOR);
        exit(1);
}

static void
options_usage(void)
{
        /* BEGIN CSTYLED */
        f_print(stderr, "options:\n");
        f_print(stderr, "-a\t\tgenerate all files, including samples\n");
        f_print(stderr, "-A\t\tgenerate code to enable automatic MT mode\n");
        f_print(stderr, "-b\t\tbackward compatibility mode (generates code"
                        " for SunOS 4.X)\n");
        f_print(stderr, "-c\t\tgenerate XDR routines\n");
        f_print(stderr, "-C\t\tANSI C mode\n");
        f_print(stderr, "-Dname[=value]\tdefine a symbol (same as #define)\n");
        f_print(stderr, "-h\t\tgenerate header file\n");
        f_print(stderr, "-i size\t\tsize at which to start generating"
                        " inline code\n");
        f_print(stderr, "-I\t\tgenerate code for inetd support in server"
                        " (for SunOS 4.X)\n");
        f_print(stderr, "-K seconds\tserver exits after K seconds of"
                        " inactivity\n");
        f_print(stderr, "-l\t\tgenerate client side stubs\n");
        f_print(stderr, "-L\t\tserver errors will be printed to syslog\n");
        f_print(stderr, "-m\t\tgenerate server side stubs\n");
        f_print(stderr, "-M\t\tgenerate MT-safe code\n");
        f_print(stderr, "-n netid\tgenerate server code that supports"
                        " named netid\n");
        f_print(stderr, "-N\t\tsupports multiple arguments and"
                        " call-by-value\n");
        f_print(stderr, "-o outfile\tname of the output file\n");
        f_print(stderr, "-s nettype\tgenerate server code that supports named"
                        " nettype\n");
        f_print(stderr, "-Sc\t\tgenerate sample client code that uses remote"
                        " procedures\n");
        f_print(stderr, "-Ss\t\tgenerate sample server code that defines"
                        " remote procedures\n");
        f_print(stderr, "-Sm \t\tgenerate makefile template \n");

        f_print(stderr, "-t\t\tgenerate RPC dispatch table\n");
        f_print(stderr, "-T\t\tgenerate code to support RPC dispatch tables\n");
        f_print(stderr, "-v\t\tprint version information and exit\n");
        f_print(stderr, "-Y path\t\tpath where cpp is found\n");
        /* END CSTYLED */
        exit(1);
}