[rustc.git] / vendor / getrandom / src / ios.rs

// 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(())
    }
}
Commit	Line	Data
f20569fa XL	1	// Copyright 2018 Developers of the Rand project.
	2	//
	3	// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
	4	// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
	5	// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
	6	// option. This file may not be copied, modified, or distributed
	7	// except according to those terms.
	8
	9	//! Implementation for iOS
	10	use crate::Error;
	11	use core::{ffi::c_void, ptr::null};
	12
	13	#[link(name = "Security", kind = "framework")]
	14	extern "C" {
	15	fn SecRandomCopyBytes(rnd: const c_void, count: usize, bytes: mut u8) -> i32;
	16	}
	17
	18	pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
	19	// Apple's documentation guarantees kSecRandomDefault is a synonym for NULL.
	20	let ret = unsafe { SecRandomCopyBytes(null(), dest.len(), dest.as_mut_ptr()) };
	21	if ret == -1 {
	22	Err(Error::IOS_SEC_RANDOM)
	23	} else {
	24	Ok(())
	25	}
	26	}