/*	$OpenBSD: user_pwd.c,v 1.3 2012/09/25 17:38:55 eric Exp $	*/

/*
 * Copyright (c) 2011 Gilles Chehade <gilles@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/queue.h>
#include <sys/tree.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/stat.h>

#include <event.h>
#include <imsg.h>
#include <libgen.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "smtpd.h"
#include "log.h"

static int user_getpw_ret(struct mta_user *, struct passwd *); /* helper */
static int user_getpwnam(struct mta_user *, const char *);

struct user_backend user_backend_pwd = {
	user_getpwnam
};

static int
user_getpw_ret(struct mta_user *u, struct passwd *pw)
{
	if (strlcpy(u->username, pw->pw_name, sizeof (u->username))
	    >= sizeof (u->username))
		return 0;

	if (strlcpy(u->password, pw->pw_passwd, sizeof (u->password))
	    >= sizeof (u->password))
		return 0;

	if (strlcpy(u->directory, pw->pw_dir, sizeof (u->directory))
	    >= sizeof (u->directory))
		return 0;

	u->uid = pw->pw_uid;
	u->gid = pw->pw_gid;

	return 1;
}

static int
user_getpwnam(struct mta_user *u, const char *username)
{
	struct passwd *pw;

	pw = getpwnam(username);
	if (pw == NULL)
		return 0;

	return user_getpw_ret(u, pw);
}