root/usr/src/cmd/bnu/getpwinfo.c
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */


#ident  "%Z%%M% %I%     %E% SMI"        /* from SVR4 bnu:getpwinfo.c 2.8 */

#include "uucp.h"

#include <pwd.h>
extern struct passwd *getpwuid(), *getpwnam();
extern char     *getlogin();


/*
 * get passwd file info for logname or uid
 *      uid     -> uid #
 *      name    -> address of buffer to return ascii user name
 *              This will be set to pw->pw_name.
 *
 * return:
 *      0       -> success
 *      FAIL    -> failure (logname and uid not found)
 */
int
guinfo(uid, name)
uid_t uid;
char *name;
{
        register struct passwd *pwd;
        char    *login_name;

        /* look for this user as logged in utmp */
        if ((login_name = getlogin()) != NULL) {
                pwd = getpwnam(login_name);
                if (pwd != NULL && pwd->pw_uid == uid)
                        goto uid_found;
        }

        /* no dice on utmp -- get first from passwd file */
        if ((pwd = getpwuid(uid)) == NULL) {
            if ((pwd = getpwuid(UUCPUID)) == NULL)
                /* can not find uid in passwd file */
                return(FAIL);
        }

uid_found:
        (void) strcpy(name, pwd->pw_name);
        return(0);
}

/*
 * get passwd file info for name
 *      name    -> ascii user name
 *      uid     -> address of integer to return uid # in
 *      path    -> address of buffer to return working directory in
 * returns:
 *      0       -> success
 *      FAIL    -> failure
 */
int
gninfo(name, uid, path)
char *path, *name;
uid_t *uid;
{
        register struct passwd *pwd;

        if ((pwd = getpwnam(name)) == NULL) {
                /* can not find name in passwd file */
                *path = '\0';
                return(FAIL);
        }

        (void) strcpy(path, pwd->pw_dir);
        *uid = pwd->pw_uid;
        return(0);
}