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Generic custom extension add fn return type

This commit is contained in:
Benjamin Saunders 2018-03-10 22:30:54 -08:00
parent b0bc1c770e
commit e02dbde2f7
3 changed files with 30 additions and 30 deletions
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42
openssl/src/ssl/callbacks.rs
View File

@ -2,8 +2,6 @@ use ffi;
use libc::{c_char, c_int, c_uchar, c_uint, c_void};
#[cfg(all(feature = "v111", ossl111))]
use libc::size_t;
#[cfg(all(feature = "v111", ossl111))]
use std::borrow::Cow;
use std::ffi::CStr;
use std::ptr;
use std::slice;
@ -426,17 +424,18 @@ where
}
#[cfg(all(feature = "v111", ossl111))]
pub struct CustomExtAddState(Option<Cow<'static, [u8]>>);
pub struct CustomExtAddState<T>(Option<T>);
#[cfg(all(feature = "v111", ossl111))]
pub extern "C" fn raw_custom_ext_add<F>(ssl: *mut ffi::SSL, _: c_uint,
context: c_uint,
out: *mut *const c_uchar,
outlen: *mut size_t, x: *mut ffi::X509,
chainidx: size_t, al: *mut c_int,
_: *mut c_void)
-> c_int
where F: Fn(&mut SslRef, ExtensionContext, Option<(usize, &X509Ref)>) -> Result<Option<Cow<'static, [u8]>>, SslAlert> + 'static
pub extern "C" fn raw_custom_ext_add<F, T>(ssl: *mut ffi::SSL, _: c_uint,
context: c_uint,
out: *mut *const c_uchar,
outlen: *mut size_t, x: *mut ffi::X509,
chainidx: size_t, al: *mut c_int,
_: *mut c_void)
-> c_int
where F: Fn(&mut SslRef, ExtensionContext, Option<(usize, &X509Ref)>) -> Result<Option<T>, SslAlert> + 'static,
T: AsRef<[u8]> + 'static,
{
unsafe {
let ssl_ctx = ffi::SSL_get_SSL_CTX(ssl as *const _);
@ -448,13 +447,13 @@ pub extern "C" fn raw_custom_ext_add<F>(ssl: *mut ffi::SSL, _: c_uint,
match (callback)(ssl, ectx, cert) {
Ok(None) => 0,
Ok(Some(buf)) => {
*outlen = buf.len() as size_t;
*out = buf.as_ptr();
*outlen = buf.as_ref().len() as size_t;
*out = buf.as_ref().as_ptr();
let idx = get_ssl_callback_idx::<CustomExtAddState>();
let idx = get_ssl_callback_idx::<CustomExtAddState<T>>();
let ptr = ffi::SSL_get_ex_data(ssl.as_ptr(), idx);
if ptr.is_null() {
let x = Box::into_raw(Box::<CustomExtAddState>::new(CustomExtAddState(Some(buf)))) as *mut c_void;
let x = Box::into_raw(Box::<CustomExtAddState<T>>::new(CustomExtAddState(Some(buf)))) as *mut c_void;
ffi::SSL_set_ex_data(ssl.as_ptr(), idx, x);
} else {
*(ptr as *mut _) = CustomExtAddState(Some(buf))
@ -470,14 +469,15 @@ pub extern "C" fn raw_custom_ext_add<F>(ssl: *mut ffi::SSL, _: c_uint,
}
#[cfg(all(feature = "v111", ossl111))]
pub extern "C" fn raw_custom_ext_free(ssl: *mut ffi::SSL, _: c_uint,
_: c_uint,
_: *mut *const c_uchar,
_: *mut c_void)
pub extern "C" fn raw_custom_ext_free<T>(ssl: *mut ffi::SSL, _: c_uint,
_: c_uint,
_: *mut *const c_uchar,
_: *mut c_void)
where T: 'static
{
unsafe {
let state = ffi::SSL_get_ex_data(ssl, get_ssl_callback_idx::<CustomExtAddState>());
let state = &mut (*(state as *mut CustomExtAddState)).0;
let state = ffi::SSL_get_ex_data(ssl, get_ssl_callback_idx::<CustomExtAddState<T>>());
let state = &mut (*(state as *mut CustomExtAddState<T>)).0;
state.take();
}
}

14
openssl/src/ssl/mod.rs
View File

@ -61,8 +61,6 @@ use ffi;
use foreign_types::{ForeignType, ForeignTypeRef, Opaque};
use libc::{c_char, c_int, c_long, c_uchar, c_uint, c_ulong, c_void};
use std::any::TypeId;
#[cfg(all(feature = "v111", ossl111))]
use std::borrow::Cow;
use std::cmp;
use std::collections::HashMap;
use std::ffi::{CStr, CString};
@ -1511,10 +1509,12 @@ impl SslContextBuilder {
///
/// [`SSL_CTX_add_custom_ext`]: https://www.openssl.org/docs/manmaster/man3/SSL_CTX_add_custom_ext.html
#[cfg(all(feature = "v111", ossl111))]
pub fn add_custom_ext<AddFn, ParseFn>(&mut self, ext_type: u16, context: ExtensionContext, add_cb: AddFn, parse_cb: ParseFn)
-> Result<(), ErrorStack>
pub fn add_custom_ext<AddFn, ParseFn, T>(
&mut self, ext_type: u16, context: ExtensionContext, add_cb: AddFn, parse_cb: ParseFn
) -> Result<(), ErrorStack>
where AddFn: Fn(&mut SslRef, ExtensionContext, Option<(usize, &X509Ref)>)
-> Result<Option<Cow<'static, [u8]>>, SslAlert> + 'static + Sync + Send,
-> Result<Option<T>, SslAlert> + 'static + Sync + Send,
T: AsRef<[u8]> + 'static,
ParseFn: Fn(&mut SslRef, ExtensionContext, &[u8], Option<(usize, &X509Ref)>)
-> Result<(), SslAlert> + 'static + Sync + Send,
{
@ -1534,8 +1534,8 @@ impl SslContextBuilder {
);
ffi::SSL_CTX_add_custom_ext(self.as_ptr(), ext_type as c_uint, context.bits(),
Some(raw_custom_ext_add::<AddFn>),
Some(raw_custom_ext_free),
Some(raw_custom_ext_add::<AddFn, T>),
Some(raw_custom_ext_free::<T>),
ptr::null_mut(),
Some(raw_custom_ext_parse::<ParseFn>),
ptr::null_mut())

4
openssl/src/ssl/test.rs
View File

@ -1370,7 +1370,7 @@ fn custom_extensions() {
.unwrap();
ctx.add_custom_ext(
12345, ssl::ExtensionContext::CLIENT_HELLO,
|_, _, _| unreachable!(),
|_, _, _| -> Result<Option<&'static [u8]>, _> { unreachable!() },
|_, _, data, _| { FOUND_EXTENSION.store(data == b"hello", Ordering::SeqCst); Ok(()) }
).unwrap();
let ssl = Ssl::new(&ctx.build()).unwrap();
@ -1381,7 +1381,7 @@ fn custom_extensions() {
let mut ctx = SslContext::builder(SslMethod::tls()).unwrap();
ctx.add_custom_ext(
12345, ssl::ExtensionContext::CLIENT_HELLO,
|_, _, _| Ok(Some(b"hello"[..].into())),
|_, _, _| Ok(Some(b"hello")),
|_, _, _, _| unreachable!()
).unwrap();
let ssl = Ssl::new(&ctx.build()).unwrap();