/*
 * Copyright (C) 2000-2007 Carsten Haitzler, Geoff Harrison and various contributors
 * Copyright (C) 2012-2022 Kim Woelders
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies of the Software, its documentation and marketing & publicity
 * materials, and acknowledgment shall be given in the documentation, materials
 * and software packages that this Software was used.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#include "config.h"

#include <pwd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>

#include "file.h"
#include "user.h"
#include "util.h"

static int      usr_uid = -1;
static const char *usr_name = "unknown";
static const char *usr_home = "/tmp";

static void
_user_init(void)
{
    const char     *ss;
    struct passwd  *pwd;

    usr_uid = getuid();
    pwd = getpwuid(usr_uid);

    if (!pwd)
    {
        ss = getenv("TMPDIR");
        if (ss)
            usr_home = ss;
        return;
    }

    ss = Estrdup(pwd->pw_name);
    if (ss)
        usr_name = ss;
    ss = Estrdup(pwd->pw_dir);
    if (ss)
        usr_home = ss;
}

const char     *
username(void)
{
    if (usr_uid < 0)
        _user_init();
    return usr_name;
}

const char     *
userhome(void)
{
    if (usr_uid < 0)
        _user_init();
    return usr_home;
}