| // 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()) }; |
| // errSecSuccess (from SecBase.h) is always zero. |
| if ret != 0 { |
| Err(Error::IOS_SEC_RANDOM) |
| } else { |
| Ok(()) |
| } |
| } |
