| // 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; | |
| use core::{ffi::c_void, ptr::null}; | |
| #[link(name = "Security", kind = "framework")] | |
| extern "C" { | |
| fn SecRandomCopyBytes(rnd: *const c_void, count: usize, bytes: *mut u8) -> i32; | |
| } | |
| pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> { | |
| // Apple's documentation guarantees kSecRandomDefault is a synonym for NULL. | |
| let ret = unsafe { SecRandomCopyBytes(null(), dest.len(), dest.as_mut_ptr()) }; | |
| if ret == -1 { | |
| Err(Error::IOS_SEC_RANDOM) | |
| } else { | |
| Ok(()) | |
| } | |
| } |