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use std::rt::io::{Stream, Decorator};
use std::unstable::atomics::{AtomicBool, INIT_ATOMIC_BOOL, Acquire, Release};
use std::task;
use std::ptr;
mod ffi;
static mut STARTED_INIT: AtomicBool = INIT_ATOMIC_BOOL;
static mut FINISHED_INIT: AtomicBool = INIT_ATOMIC_BOOL;
pub fn init() {
unsafe {
if STARTED_INIT.swap(true, Acquire) {
while !FINISHED_INIT.load(Release) {
task::deschedule();
}
return;
}
ffi::SSL_library_init();
ffi::SSL_load_error_strings();
FINISHED_INIT.store(true, Release);
}
}
pub enum SslMethod {
Sslv23
}
impl SslMethod {
unsafe fn to_raw(&self) -> *ffi::SSL_METHOD {
match *self {
Sslv23 => ffi::SSLv23_method()
}
}
}
pub struct SslCtx {
priv ctx: *ffi::SSL_CTX
}
impl Drop for SslCtx {
fn drop(&mut self) {
unsafe { ffi::SSL_CTX_free(self.ctx); }
}
}
impl SslCtx {
pub fn new(method: SslMethod) -> SslCtx {
init();
let ctx = unsafe { ffi::SSL_CTX_new(method.to_raw()) };
assert!(ctx != ptr::null());
SslCtx {
ctx: ctx
}
}
}
struct Ssl {
ssl: *ffi::SSL
}
impl Drop for Ssl {
fn drop(&mut self) {
unsafe { ffi::SSL_free(self.ssl); }
}
}
impl Ssl {
fn new(ctx: &SslCtx) -> Ssl {
let ssl = unsafe { ffi::SSL_new(ctx.ctx) };
assert!(ssl != ptr::null());
Ssl { ssl: ssl }
}
fn set_bio(&self, rbio: &MemBio, wbio: &MemBio) {
unsafe { ffi::SSL_set_bio(self.ssl, rbio.bio, wbio.bio); }
}
fn set_connect_state(&self) {
unsafe { ffi::SSL_set_connect_state(self.ssl); }
}
}
struct MemBio {
bio: *ffi::BIO
}
impl Drop for MemBio {
fn drop(&mut self) {
unsafe { ffi::BIO_free(self.bio); }
}
}
impl MemBio {
fn new() -> MemBio {
let bio = unsafe { ffi::BIO_new(ffi::BIO_s_mem()) };
assert!(bio != ptr::null());
MemBio { bio: bio }
}
}
pub struct SslStream<S> {
priv ctx: SslCtx,
priv ssl: Ssl,
priv rbio: MemBio,
priv wbio: MemBio,
priv stream: S
}
impl<S: Stream> SslStream<S> {
pub fn new(ctx: SslCtx, stream: S) -> SslStream<S> {
let ssl = Ssl::new(&ctx);
let rbio = MemBio::new();
let wbio = MemBio::new();
ssl.set_bio(&rbio, &wbio);
ssl.set_connect_state();
let stream = SslStream {
ctx: ctx,
ssl: ssl,
rbio: rbio,
wbio: wbio,
stream: stream
}
stream
}
}
impl<S: Stream> Decorator<S> for SslStream<S> {
fn inner(self) -> S {
self.stream
}
fn inner_ref<'a>(&'a self) -> &'a S {
&self.stream
}
fn inner_mut_ref<'a>(&'a mut self) -> &'a mut S {
&mut self.stream
}
}
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