/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

#include <stdio.h>
#include <stdlib.h>

#include "apr_errno.h"
#include "apr_general.h"
#include "apr_user.h"

#if !APR_HAS_USER
int main(void)
{
    fprintf(stderr,
            "This program won't work on this platform because !APR_HAS_USER.\n");
    return 0;
}
#else
int main(int argc, char *argv[])
{
    apr_pool_t *p;
    apr_status_t rv;
    char msgbuf[80];
    char *groupname;
    char *username;
    char *homedir;
    apr_uid_t userid;
    apr_gid_t groupid, newgroupid;

    if (apr_initialize() != APR_SUCCESS) {
        fprintf(stderr, "Something went wrong\n");
        exit(-1);
    }
    atexit(apr_terminate);

    if (apr_pool_create(&p, NULL) != APR_SUCCESS) {
        fprintf(stderr, "Something went wrong\n");
        exit(-1);
    }

    if (argc != 2) {
        fprintf(stderr,
                "optional: %s username\n",
                argv[0]);
        if ((rv = apr_current_userid(&userid, &groupid, p)) != APR_SUCCESS) {
            fprintf(stderr, "apr_current_userid failed: %s\n",
                    apr_strerror(rv, msgbuf, sizeof(msgbuf)));
            exit(-1);
        }
        apr_get_username(&username, userid, p);
        if (rv != APR_SUCCESS) {
            fprintf(stderr, "apr_get_username(,,) failed: %s\n",
                    apr_strerror(rv, msgbuf, sizeof(msgbuf)));
            exit(-1);
        }
    }
    else {
        username = argv[1];

        rv = apr_get_userid(&userid, &groupid, username, p);
        if (rv != APR_SUCCESS) {
            fprintf(stderr, "apr_get_userid(,,%s,) failed: %s\n",
                    username,
                    apr_strerror(rv, msgbuf, sizeof(msgbuf)));
            exit(-1);
        }
    }

    rv = apr_get_groupname(&groupname, groupid, p);
    if (rv != APR_SUCCESS)
        groupname = "(none)";

    rv = apr_get_groupid(&newgroupid, groupname, p);
    if (rv != APR_SUCCESS) {
        fprintf(stderr, "apr_get_groupid(,%s,) failed: %s\n",
                groupname,
                apr_strerror(rv, msgbuf, sizeof msgbuf));
        exit(-1);
    }

    if (groupid != newgroupid) {
        fprintf(stderr, "oops, we got a different result for the "
                "group name/id mapping\n");
        /* whoever hits this problem gets to figure out how to 
         * portably display groupid and newgroupid :) 
         */
        fprintf(stderr, "group: %s\n",
                groupname);
    }

    printf("user/group ids for %s: %d/%d\n",
           username,
           (int)userid, (int)groupid);

    rv = apr_get_home_directory(&homedir, username, p);
    if (rv != APR_SUCCESS) {
        fprintf(stderr, "apr_get_home_directory(,%s,) failed: %s\n",
                username,
                apr_strerror(rv, msgbuf, sizeof(msgbuf)));
        exit(-1);
    }
    printf("home directory for %s (member of %s) is:\n`%s'\n",
           username, groupname, homedir);

    return 0;
}
#endif /* APR_HAS_USER */