use libc::*;
use std::mem;
use std::ptr;

use super::*;

pub const TLS1_VERSION: c_int = 0x301;
pub const TLS1_1_VERSION: c_int = 0x302;
pub const TLS1_2_VERSION: c_int = 0x303;
#[cfg(any(ossl111, libressl340))]
pub const TLS1_3_VERSION: c_int = 0x304;

pub const TLS1_AD_DECODE_ERROR: c_int = 50;
pub const TLS1_AD_UNRECOGNIZED_NAME: c_int = 112;

pub const TLSEXT_NAMETYPE_host_name: c_int = 0;
pub const TLSEXT_STATUSTYPE_ocsp: c_int = 1;

pub unsafe fn SSL_set_tlsext_host_name(s: *mut SSL, name: *mut c_char) -> c_long {
    SSL_ctrl(s, SSL_CTRL_SET_TLSEXT_HOSTNAME, TLSEXT_NAMETYPE_host_name as c_long, name as *mut c_void)
}

pub unsafe fn SSL_set_tlsext_status_type(s: *mut SSL, type_: c_int) -> c_long {
    SSL_ctrl(s, SSL_CTRL_SET_TLSEXT_STATUS_REQ_TYPE, type_ as c_long, ptr::null_mut())
}

pub unsafe fn SSL_get_tlsext_status_ocsp_resp(ssl: *mut SSL, resp: *mut *mut c_uchar) -> c_long {
    SSL_ctrl(ssl, SSL_CTRL_GET_TLSEXT_STATUS_REQ_OCSP_RESP, 0, resp as *mut c_void)
}

pub unsafe fn SSL_set_tlsext_status_ocsp_resp(ssl: *mut SSL, resp: *mut c_uchar, len: c_long) -> c_long {
    SSL_ctrl(ssl, SSL_CTRL_SET_TLSEXT_STATUS_REQ_OCSP_RESP, len, resp as *mut c_void)
}

#[deprecated(note = "use SSL_CTX_set_tlsext_servername_callback__fixed_rust instead")]
#[allow(deprecated)]
pub unsafe fn SSL_CTX_set_tlsext_servername_callback(
    ctx: *mut SSL_CTX,
    // FIXME should have the right signature
    cb: Option<extern "C" fn()>,
) -> c_long {
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TLSEXT_SERVERNAME_CB, cb)
}

pub unsafe fn SSL_CTX_set_tlsext_servername_callback__fixed_rust(
    ctx: *mut SSL_CTX,
    cb: Option<unsafe extern "C" fn(*mut SSL, *mut c_int, *mut c_void) -> c_int>,
) -> c_long {
    SSL_CTX_callback_ctrl__fixed_rust(ctx, SSL_CTRL_SET_TLSEXT_SERVERNAME_CB, mem::transmute(cb))
}

pub const SSL_TLSEXT_ERR_OK: c_int = 0;
pub const SSL_TLSEXT_ERR_ALERT_WARNING: c_int = 1;
pub const SSL_TLSEXT_ERR_ALERT_FATAL: c_int = 2;
pub const SSL_TLSEXT_ERR_NOACK: c_int = 3;

pub unsafe fn SSL_CTX_set_tlsext_servername_arg(ctx: *mut SSL_CTX, arg: *mut c_void) -> c_long {
    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG, 0, arg)
}

pub unsafe fn SSL_CTX_set_tlsext_status_cb(ctx: *mut SSL_CTX, cb: Option<unsafe extern "C" fn(*mut SSL, *mut c_void) -> c_int>) -> c_long {
    SSL_CTX_callback_ctrl__fixed_rust(ctx, SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB, mem::transmute(cb))
}

pub unsafe fn SSL_CTX_set_tlsext_status_arg(ctx: *mut SSL_CTX, arg: *mut c_void) -> c_long {
    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB_ARG, 0, arg)
}