rust_asio 0.6.0

Asynchronous I/O library
Documentation 
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use openssl_sys::*;
use libc::{c_void, c_char, c_int, c_long, size_t};

pub type VerifyCallback = extern "C" fn(c_int, *mut X509_STORE_CTX) -> c_int;

pub const SSL_SENT_SHUTDOWN: c_int = 1;
pub const SSL_RECEIVED_SHUTDOWN: c_int = 2;

extern {
    pub fn ERR_clear_error(_: c_void) -> c_void;

    pub fn SSL_CTX_get_default_passwd_cb_userdata(ctx: *mut SSL_CTX) -> *mut c_void;
    pub fn SSL_CTX_set_default_passwd_cb_userdata(ctx: *mut SSL_CTX, user_data: *mut c_void);
    pub fn SSL_CTX_set_default_passwd_cb(ctx: *mut SSL_CTX, callback: PasswordCallback);
    pub fn SSL_CTX_get_verify_mode(ctx: *mut SSL_CTX) -> c_int;
    pub fn SSL_CTX_get_verify_callback(ctx: *mut SSL_CTX) -> Option<VerifyCallback>;
    pub fn SSL_CTX_get_app_data(ctx: *mut SSL_CTX) -> *mut c_void;
    pub fn SSL_CTX_set_app_data(ctx: *mut SSL_CTX, user_data: *mut c_void);
    pub fn SSL_CTX_set_options(ctx: *mut SSL_CTX, options: c_long) -> c_long;
    pub fn SSL_CTX_clear_options(ctx: *mut SSL_CTX, options: c_long) -> c_long;

    pub fn SSL_get_verify_mode(ssl: *mut SSL) -> c_int;
    pub fn SSL_set_verify_depth(ssl: *mut SSL, depth: c_int);
    pub fn SSL_get_verify_callback(ssl: *mut SSL) -> Option<VerifyCallback>;
    pub fn SSL_get_app_data(ssl: *mut SSL) -> *mut c_void;
    pub fn SSL_set_app_data(ssl: *mut SSL, user_data: *mut c_void);
    pub fn SSL_get_shutdown(ssl: *mut SSL) -> c_int;

    pub fn BIO_wpending(bio: *mut BIO) -> c_int;
    pub fn BIO_new_bio_pair(bio1: *mut *mut BIO, writebuf1: size_t,
                            bio2: *mut *mut BIO, writebuf2: size_t) -> c_int;
    pub fn BIO_ctrl_pending(bio: *mut BIO) -> size_t;
}

pub unsafe fn SSL_set_mode(ssl: *mut SSL, mode: c_long) -> c_long {
    use std::ptr;
    SSL_ctrl(ssl, SSL_CTRL_MODE, mode, ptr::null_mut())
}

pub fn clear_error() {
    use std::mem;
    unsafe { ERR_clear_error(mem::uninitialized()) };
}