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/*

 * 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 or with the express written consent of

 * Sun Microsystems, Inc.

 *

 * 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

 */

#if !defined(lint) && defined(SCCSIDS)

static char sccsid[] = "@(#)netname.c 1.8 91/03/11 Copyr 1986 Sun Micro";

#endif

/*

 * netname utility routines

 * convert from unix names to network names and vice-versa

 * This module is operating system dependent!

 * What we define here will work with any unix system that has adopted

 * the sun NIS domain architecture.

 */

#include <sys/param.h>

#include <rpc/rpc.h>

#include <rpc/rpc_com.h>

#ifdef YP

#include <rpcsvc/yp_prot.h>

#include <rpcsvc/ypclnt.h>

#endif

#include <ctype.h>

#include <stdlib.h>

#include <unistd.h>

#include <string.h>

#include <stdio.h>

#ifndef MAXHOSTNAMELEN

#define MAXHOSTNAMELEN 256

#endif

#ifndef NGROUPS

#define NGROUPS 16

#endif

static char *OPSYS = "unix";

/*

 * Figure out my fully qualified network name

 */

int

getnetname(name)

        char name[MAXNETNAMELEN+1];

{

        uid_t uid;

        uid = geteuid();

        if (uid == 0) {

                return (host2netname(name, (char *) NULL, (char *) NULL));

        } else {

                return (user2netname(name, uid, (char *) NULL));

        }

}

/*

 * Convert unix cred to network-name

 */

int

user2netname(netname, uid, domain)

        char netname[MAXNETNAMELEN + 1];

        uid_t uid;

        char *domain;

{

        char *dfltdom;

#define MAXIPRINT       (11)    /* max length of printed integer */

        if (domain == NULL) {

                if (_rpc_get_default_domain(&dfltdom) != 0) {

                        return (0);

                }

                domain = dfltdom;

        }

        if (strlen(domain) + 1 + MAXIPRINT > MAXNETNAMELEN) {

                return (0);

        }

        (void) sprintf(netname, "%s.%ld@%s", OPSYS, (u_long)uid, domain);

        return (1);

}

/*

 * Convert host to network-name

 */

int

host2netname(netname, host, domain)

        char netname[MAXNETNAMELEN + 1];

        char *host;

        char *domain;

{

        char *dfltdom;

        char hostname[MAXHOSTNAMELEN+1];

        if (domain == NULL) {

                if (_rpc_get_default_domain(&dfltdom) != 0) {

                        return (0);

                }

                domain = dfltdom;

        }

        if (host == NULL) {

                (void) gethostname(hostname, sizeof(hostname));

                host = hostname;

        }

        if (strlen(domain) + 1 + strlen(host) > MAXNETNAMELEN) {

                return (0);

        }

        (void) sprintf(netname, "%s.%s@%s", OPSYS, host, domain);

        return (1);

}