#![allow(dead_code, non_camel_case_types)]

extern crate libc;

pub use self::utmpx::{UT_NAMESIZE, UT_LINESIZE, DEFAULT_FILE, USER_PROCESS, BOOT_TIME};
pub use self::utmpx::c_utmp;

extern "C" {
    pub fn getutxent() -> *const c_utmp;
    pub fn getutxid(ut: *const c_utmp) -> *const c_utmp;
    pub fn getutxline(ut: *const c_utmp) -> *const c_utmp;
    pub fn pututxline(ut: *const c_utmp) -> *const c_utmp;
    pub fn setutxent();
    pub fn endutxent();

    #[cfg(any(target_os = "macos", target_os = "linux"))]
    pub fn utmpxname(file: *const libc::c_char) -> libc::c_int;
}

#[cfg(target_os = "freebsd")]
pub unsafe extern fn utmpxname(_file: *const libc::c_char) -> libc::c_int {
    0
}

#[cfg(target_os = "linux")]
mod utmpx {
    use super::libc;

    pub static DEFAULT_FILE: &'static str = "/var/run/utmp";

    pub const UT_LINESIZE: usize = 32;
    pub const UT_NAMESIZE: usize = 32;
    pub const UT_IDSIZE: usize = 4;
    pub const UT_HOSTSIZE: usize = 256;

    pub const EMPTY: libc::c_short = 0;
    pub const RUN_LVL: libc::c_short = 1;
    pub const BOOT_TIME: libc::c_short = 2;
    pub const NEW_TIME: libc::c_short = 3;
    pub const OLD_TIME: libc::c_short = 4;
    pub const INIT_PROCESS: libc::c_short = 5;
    pub const LOGIN_PROCESS: libc::c_short = 6;
    pub const USER_PROCESS: libc::c_short = 7;
    pub const DEAD_PROCESS: libc::c_short = 8;
    pub const ACCOUNTING: libc::c_short = 9;

    #[repr(C)]
    pub struct __exit_status {
        pub e_termination: libc::c_short,
        pub e_exit: libc::c_short,
    }

    #[repr(C)]
    #[derive(Copy, Clone)]
    pub struct __timeval {
        pub tv_sec: libc::int32_t,
        pub tv_usec: libc::int32_t,
    }

    #[repr(C)]
    pub struct c_utmp {
        pub ut_type: libc::c_short,
        pub ut_pid: libc::pid_t,
        pub ut_line: [libc::c_char; UT_LINESIZE],
        pub ut_id: [libc::c_char; UT_IDSIZE],

        pub ut_user: [libc::c_char; UT_NAMESIZE],
        pub ut_host: [libc::c_char; UT_HOSTSIZE],
        pub ut_exit: __exit_status,

        #[cfg(target_pointer_width = "32")]
        pub ut_session: libc::c_long,
        #[cfg(target_pointer_width = "32")]
        pub ut_tv: libc::timeval,

        #[cfg(target_pointer_width = "64")]
        pub ut_session: libc::int32_t,
        #[cfg(target_pointer_width = "64")]
        pub ut_tv: __timeval,

        pub ut_addr_v6: [libc::int32_t; 4],
        __glibc_reserved: [libc::c_char; 20],
    }
}

#[cfg(target_os = "macos")]
mod utmpx {
    use super::libc;

    pub static DEFAULT_FILE: &'static str = "/var/run/utmpx";

    pub const UT_LINESIZE: usize = 32;
    pub const UT_NAMESIZE: usize = 256;
    pub const UT_IDSIZE: usize = 4;
    pub const UT_HOSTSIZE: usize = 256;

    pub const EMPTY: libc::c_short = 0;
    pub const RUN_LVL: libc::c_short = 1;
    pub const BOOT_TIME: libc::c_short = 2;
    pub const OLD_TIME: libc::c_short = 3;
    pub const NEW_TIME: libc::c_short = 4;
    pub const INIT_PROCESS: libc::c_short = 5;
    pub const LOGIN_PROCESS: libc::c_short = 6;
    pub const USER_PROCESS: libc::c_short = 7;
    pub const DEAD_PROCESS: libc::c_short = 8;
    pub const ACCOUNTING: libc::c_short = 9;

    #[repr(C)]
    pub struct c_utmp {
        pub ut_user: [libc::c_char; UT_NAMESIZE],
        pub ut_id: [libc::c_char; UT_IDSIZE],
        pub ut_line: [libc::c_char; UT_LINESIZE],
        pub ut_pid: libc::pid_t,
        pub ut_type: libc::c_short,
        pub ut_tv: libc::timeval,
        pub ut_host: [libc::c_char; UT_HOSTSIZE],
        pub __unused: [libc::uint32_t; 16],
    }
}

#[cfg(target_os = "freebsd")]
mod utmpx {
    use super::libc;

    pub static DEFAULT_FILE: &'static str = "";

    pub const UT_LINESIZE: usize = 16;
    pub const UT_NAMESIZE: usize = 32;
    pub const UT_IDSIZE: usize = 8;
    pub const UT_HOSTSIZE: usize = 128;

    pub const EMPTY: libc::c_short = 0;
    pub const BOOT_TIME: libc::c_short = 1;
    pub const OLD_TIME: libc::c_short = 2;
    pub const NEW_TIME: libc::c_short = 3;
    pub const USER_PROCESS: libc::c_short = 4;
    pub const INIT_PROCESS: libc::c_short = 5;
    pub const LOGIN_PROCESS: libc::c_short = 6;
    pub const DEAD_PROCESS: libc::c_short = 7;
    pub const SHUTDOWN_TIME: libc::c_short = 8;

    #[repr(C)]
    pub struct c_utmp {
        pub ut_type: libc::c_short,
        pub ut_tv: libc::timeval,
        pub ut_id: [libc::c_char; UT_IDSIZE],
        pub ut_pid: libc::pid_t,
        pub ut_user: [libc::c_char; UT_NAMESIZE],
        pub ut_line: [libc::c_char; UT_LINESIZE],
        pub ut_host: [libc::c_char; UT_HOSTSIZE],
        pub ut_spare: [libc::c_char; 64],
    }
}