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// Copyright 2018 Developers of the Rand project.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! Implementation for iOS
use crate::{error::SEC_RANDOM_FAILED, Error};
// TODO: Make extern once extern_types feature is stabilized. See:
// https://github.com/rust-lang/rust/issues/43467
#[repr(C)]
struct SecRandom([u8; 0]);
#[link(name = "Security", kind = "framework")]
extern "C" {
static kSecRandomDefault: *const SecRandom;
fn SecRandomCopyBytes(rnd: *const SecRandom, count: usize, bytes: *mut u8) -> i32;
}
pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
let ret = unsafe { SecRandomCopyBytes(kSecRandomDefault, dest.len(), dest.as_mut_ptr()) };
if ret == -1 {
Err(SEC_RANDOM_FAILED)
} else {
Ok(())
}
}
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