aboutsummaryrefslogtreecommitdiff
path: root/rand/rand_os/src
diff options
context:
space:
mode:
Diffstat (limited to 'rand/rand_os/src')
-rw-r--r--rand/rand_os/src/cloudabi.rs39
-rw-r--r--rand/rand_os/src/dragonfly_haiku_emscripten.rs39
-rw-r--r--rand/rand_os/src/dummy_log.rs10
-rw-r--r--rand/rand_os/src/freebsd.rs45
-rw-r--r--rand/rand_os/src/fuchsia.rs43
-rw-r--r--rand/rand_os/src/lib.rs439
-rw-r--r--rand/rand_os/src/linux_android.rs182
-rw-r--r--rand/rand_os/src/macos.rs53
-rw-r--r--rand/rand_os/src/netbsd.rs54
-rw-r--r--rand/rand_os/src/openbsd_bitrig.rs40
-rw-r--r--rand/rand_os/src/random_device.rs70
-rw-r--r--rand/rand_os/src/redox.rs30
-rw-r--r--rand/rand_os/src/sgx.rs38
-rw-r--r--rand/rand_os/src/solaris.rs175
-rw-r--r--rand/rand_os/src/wasm32_bindgen.rs125
-rw-r--r--rand/rand_os/src/wasm32_stdweb.rs107
-rw-r--r--rand/rand_os/src/windows.rs44
17 files changed, 53 insertions, 1480 deletions
diff --git a/rand/rand_os/src/cloudabi.rs b/rand/rand_os/src/cloudabi.rs
deleted file mode 100644
index 8b96a2b..0000000
--- a/rand/rand_os/src/cloudabi.rs
+++ /dev/null
@@ -1,39 +0,0 @@
-// 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 CloudABI
-
-extern crate cloudabi;
-
-use std::io;
-use rand_core::{Error, ErrorKind};
-use super::OsRngImpl;
-
-#[derive(Clone, Debug)]
-pub struct OsRng;
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> { Ok(OsRng) }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- let errno = unsafe { cloudabi::random_get(dest) };
- if errno == cloudabi::errno::SUCCESS {
- Ok(())
- } else {
- // Cloudlibc provides its own `strerror` implementation so we
- // can use `from_raw_os_error` here.
- Err(Error::with_cause(
- ErrorKind::Unavailable,
- "random_get() system call failed",
- io::Error::from_raw_os_error(errno as i32),
- ))
- }
- }
-
- fn method_str(&self) -> &'static str { "cloudabi::random_get" }
-}
diff --git a/rand/rand_os/src/dragonfly_haiku_emscripten.rs b/rand/rand_os/src/dragonfly_haiku_emscripten.rs
deleted file mode 100644
index 6132d7a..0000000
--- a/rand/rand_os/src/dragonfly_haiku_emscripten.rs
+++ /dev/null
@@ -1,39 +0,0 @@
-// 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 DragonFly / Haiku / Emscripten
-
-use rand_core::Error;
-use super::random_device;
-use super::OsRngImpl;
-use std::fs::File;
-
-#[derive(Clone, Debug)]
-pub struct OsRng();
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> {
- random_device::open("/dev/random", &|p| File::open(p))?;
- Ok(OsRng())
- }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- random_device::read(dest)
- }
-
- #[cfg(target_os = "emscripten")]
- fn max_chunk_size(&self) -> usize {
- // `Crypto.getRandomValues` documents `dest` should be at most 65536
- // bytes. `crypto.randomBytes` documents: "To minimize threadpool
- // task length variation, partition large randomBytes requests when
- // doing so as part of fulfilling a client request.
- 65536
- }
-
- fn method_str(&self) -> &'static str { "/dev/random" }
-}
diff --git a/rand/rand_os/src/dummy_log.rs b/rand/rand_os/src/dummy_log.rs
deleted file mode 100644
index ccfe4ba..0000000
--- a/rand/rand_os/src/dummy_log.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-#[allow(unused)]
-macro_rules! trace { ($($x:tt)*) => () }
-#[allow(unused)]
-macro_rules! debug { ($($x:tt)*) => () }
-#[allow(unused)]
-macro_rules! info { ($($x:tt)*) => () }
-#[allow(unused)]
-macro_rules! warn { ($($x:tt)*) => () }
-#[allow(unused)]
-macro_rules! error { ($($x:tt)*) => () }
diff --git a/rand/rand_os/src/freebsd.rs b/rand/rand_os/src/freebsd.rs
deleted file mode 100644
index 6b8e672..0000000
--- a/rand/rand_os/src/freebsd.rs
+++ /dev/null
@@ -1,45 +0,0 @@
-// 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 FreeBSD
-
-extern crate libc;
-
-use rand_core::{Error, ErrorKind};
-use super::OsRngImpl;
-
-use std::ptr;
-use std::io;
-
-#[derive(Clone, Debug)]
-pub struct OsRng;
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> { Ok(OsRng) }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- let mib = [libc::CTL_KERN, libc::KERN_ARND];
- let mut len = dest.len();
- let ret = unsafe {
- libc::sysctl(mib.as_ptr(), mib.len() as libc::c_uint,
- dest.as_mut_ptr() as *mut _, &mut len,
- ptr::null(), 0)
- };
- if ret == -1 || len != dest.len() {
- return Err(Error::with_cause(
- ErrorKind::Unavailable,
- "kern.arandom sysctl failed",
- io::Error::last_os_error()));
- }
- Ok(())
- }
-
- fn max_chunk_size(&self) -> usize { 256 }
-
- fn method_str(&self) -> &'static str { "kern.arandom" }
-}
diff --git a/rand/rand_os/src/fuchsia.rs b/rand/rand_os/src/fuchsia.rs
deleted file mode 100644
index 7063ff6..0000000
--- a/rand/rand_os/src/fuchsia.rs
+++ /dev/null
@@ -1,43 +0,0 @@
-// 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 Fuchsia Zircon
-
-extern crate fuchsia_zircon;
-
-use rand_core::{Error, ErrorKind};
-use super::OsRngImpl;
-
-#[derive(Clone, Debug)]
-pub struct OsRng;
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> { Ok(OsRng) }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- let mut read = 0;
- while read < dest.len() {
- match fuchsia_zircon::cprng_draw(&mut dest[read..]) {
- Ok(actual) => read += actual,
- Err(e) => {
- return Err(Error::with_cause(
- ErrorKind::Unavailable,
- "cprng_draw failed",
- e.into_io_error()));
- }
- };
- }
- Ok(())
- }
-
- fn max_chunk_size(&self) -> usize {
- fuchsia_zircon::sys::ZX_CPRNG_DRAW_MAX_LEN
- }
-
- fn method_str(&self) -> &'static str { "cprng_draw" }
-}
diff --git a/rand/rand_os/src/lib.rs b/rand/rand_os/src/lib.rs
index 67b0dfe..abfdf79 100644
--- a/rand/rand_os/src/lib.rs
+++ b/rand/rand_os/src/lib.rs
@@ -8,118 +8,8 @@
// except according to those terms.
//! Interface to the random number generator of the operating system.
-//!
-//! `OsRng` is the preferred external source of entropy for most applications.
-//! Commonly it is used to initialize a user-space RNG, which can then be used
-//! to generate random values with much less overhead than `OsRng`.
-//!
-//! You may prefer to use [`EntropyRng`] instead of `OsRng`. It is unlikely, but
-//! not entirely theoretical, for `OsRng` to fail. In such cases [`EntropyRng`]
-//! falls back on a good alternative entropy source.
-//!
-//! `OsRng::new()` is guaranteed to be very cheap (after the first successful
-//! call), and will never consume more than one file handle per process.
-//!
-//! # Usage example
-//! ```
-//! use rand_os::OsRng;
-//! use rand_os::rand_core::RngCore;
-//!
-//! let mut os_rng = OsRng::new().unwrap();
-//! let mut key = [0u8; 16];
-//! os_rng.fill_bytes(&mut key);
-//! let random_u64 = os_rng.next_u64();
-//! ```
-//!
-//! # Platform sources
-//!
-//! | OS | interface
-//! |------------------|---------------------------------------------------------
-//! | Linux, Android | [`getrandom`][1] system call if available, otherwise [`/dev/urandom`][2] after reading from `/dev/random` once
-//! | Windows | [`RtlGenRandom`][3]
-//! | macOS, iOS | [`SecRandomCopyBytes`][4]
-//! | FreeBSD | [`kern.arandom`][5]
-//! | OpenBSD, Bitrig | [`getentropy`][6]
-//! | NetBSD | [`/dev/urandom`][7] after reading from `/dev/random` once
-//! | Dragonfly BSD | [`/dev/random`][8]
-//! | Solaris, illumos | [`getrandom`][9] system call if available, otherwise [`/dev/random`][10]
-//! | Fuchsia OS | [`cprng_draw`][11]
-//! | Redox | [`rand:`][12]
-//! | CloudABI | [`random_get`][13]
-//! | Haiku | `/dev/random` (identical to `/dev/urandom`)
-//! | Web browsers | [`Crypto.getRandomValues`][14] (see [Support for WebAssembly and ams.js][14])
-//! | Node.js | [`crypto.randomBytes`][15] (see [Support for WebAssembly and ams.js][16])
-//!
-//! Rand doesn't have a blanket implementation for all Unix-like operating
-//! systems that reads from `/dev/urandom`. This ensures all supported operating
-//! systems are using the recommended interface and respect maximum buffer
-//! sizes.
-//!
-//! ## Support for WebAssembly and ams.js
-//!
-//! The three Emscripten targets `asmjs-unknown-emscripten`,
-//! `wasm32-unknown-emscripten` and `wasm32-experimental-emscripten` use
-//! Emscripten's emulation of `/dev/random` on web browsers and Node.js.
-//!
-//! The bare WASM target `wasm32-unknown-unknown` tries to call the javascript
-//! methods directly, using either `stdweb` or `wasm-bindgen` depending on what
-//! features are activated for this crate. Note that if both features are
-//! enabled `wasm-bindgen` will be used.
-//!
-//! ## Early boot
-//!
-//! It is possible that early in the boot process the OS hasn't had enough time
-//! yet to collect entropy to securely seed its RNG, especially on virtual
-//! machines.
-//!
-//! Some operating systems always block the thread until the RNG is securely
-//! seeded. This can take anywhere from a few seconds to more than a minute.
-//! Others make a best effort to use a seed from before the shutdown and don't
-//! document much.
-//!
-//! A few, Linux, NetBSD and Solaris, offer a choice between blocking, and
-//! getting an error. With `try_fill_bytes` we choose to get the error
-//! ([`ErrorKind::NotReady`]), while the other methods use a blocking interface.
-//!
-//! On Linux (when the `genrandom` system call is not available) and on NetBSD
-//! reading from `/dev/urandom` never blocks, even when the OS hasn't collected
-//! enough entropy yet. As a countermeasure we try to do a single read from
-//! `/dev/random` until we know the OS RNG is initialized (and store this in a
-//! global static).
-//!
-//! # Panics and error handling
-//!
-//! We cannot guarantee that `OsRng` will fail, but if it does, it will likely
-//! be either when `OsRng::new()` is first called or when data is first read.
-//! If you wish to catch errors early, then test reading of at least one byte
-//! from `OsRng` via [`try_fill_bytes`]. If this succeeds, it is extremely
-//! unlikely that any further errors will occur.
-//!
-//! Only [`try_fill_bytes`] is able to report the cause of an error; the other
-//! [`RngCore`] methods may (depending on the error kind) retry several times,
-//! but must eventually panic if the error persists.
-//!
-//! [`EntropyRng`]: ../rand/rngs/struct.EntropyRng.html
-//! [`RngCore`]: ../rand_core/trait.RngCore.html
-//! [`try_fill_bytes`]: ../rand_core/trait.RngCore.html#method.tymethod.try_fill_bytes
-//! [`ErrorKind::NotReady`]: ../rand_core/enum.ErrorKind.html#variant.NotReady
-//!
-//! [1]: http://man7.org/linux/man-pages/man2/getrandom.2.html
-//! [2]: http://man7.org/linux/man-pages/man4/urandom.4.html
-//! [3]: https://msdn.microsoft.com/en-us/library/windows/desktop/aa387694.aspx
-//! [4]: https://developer.apple.com/documentation/security/1399291-secrandomcopybytes?language=objc
-//! [5]: https://www.freebsd.org/cgi/man.cgi?query=random&sektion=4
-//! [6]: https://man.openbsd.org/getentropy.2
-//! [7]: http://netbsd.gw.com/cgi-bin/man-cgi?random+4+NetBSD-current
-//! [8]: https://leaf.dragonflybsd.org/cgi/web-man?command=random&section=4
-//! [9]: https://docs.oracle.com/cd/E88353_01/html/E37841/getrandom-2.html
-//! [10]: https://docs.oracle.com/cd/E86824_01/html/E54777/random-7d.html
-//! [11]: https://fuchsia.googlesource.com/zircon/+/HEAD/docs/syscalls/cprng_draw.md
-//! [12]: https://github.com/redox-os/randd/blob/master/src/main.rs
-//! [13]: https://github.com/NuxiNL/cloudabi/blob/v0.20/cloudabi.txt#L1826
-//! [14]: https://www.w3.org/TR/WebCryptoAPI/#Crypto-method-getRandomValues
-//! [15]: https://nodejs.org/api/crypto.html#crypto_crypto_randombytes_size_callback
-//! [16]: #support-for-webassembly-and-amsjs
+// Note: keep this code in sync with the rand::rngs::os module!
+
#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk.png",
html_favicon_url = "https://www.rust-lang.org/favicon.ico",
html_root_url = "https://rust-random.github.io/rand/")]
@@ -127,46 +17,54 @@
#![deny(missing_debug_implementations)]
#![doc(test(attr(allow(unused_variables), deny(warnings))))]
-#![cfg_attr(feature = "stdweb", recursion_limit="128")]
-
-pub extern crate rand_core;
-#[cfg(feature = "log")]
-#[macro_use] extern crate log;
-
-// We have to do it here because we load macros
-#[cfg(all(target_arch = "wasm32", not(target_os = "emscripten"),
- feature = "wasm-bindgen"))]
-extern crate wasm_bindgen;
-#[cfg(all(target_arch = "wasm32", not(target_os = "emscripten"),
- not(feature = "wasm-bindgen"),
- feature = "stdweb"))]
-#[macro_use] extern crate stdweb;
+#![no_std] // but see getrandom crate
-#[cfg(target_env = "sgx")]
-extern crate rdrand;
+#![deprecated(since="0.2.2", note="OsRng is now provided by rand_core and rand")]
-#[cfg(not(feature = "log"))]
-#[macro_use]
-mod dummy_log;
+pub use rand_core; // re-export
-use std::fmt;
+use getrandom::getrandom;
use rand_core::{CryptoRng, RngCore, Error, impls};
-/// A random number generator that retrieves randomness straight from the
+/// A random number generator that retrieves randomness from from the
/// operating system.
-#[derive(Clone)]
-pub struct OsRng(imp::OsRng);
-
-impl fmt::Debug for OsRng {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- self.0.fmt(f)
- }
-}
+///
+/// This is a zero-sized struct. It can be freely constructed with `OsRng`.
+///
+/// The implementation is provided by the [getrandom] crate. Refer to
+/// [getrandom] documentation for details.
+///
+/// # Blocking and error handling
+///
+/// It is possible that when used during early boot the first call to `OsRng`
+/// will block until the system's RNG is initialised. It is also possible
+/// (though highly unlikely) for `OsRng` to fail on some platforms, most
+/// likely due to system mis-configuration.
+///
+/// After the first successful call, it is highly unlikely that failures or
+/// significant delays will occur (although performance should be expected to
+/// be much slower than a user-space PRNG).
+///
+/// # Usage example
+/// ```
+/// #![allow(deprecated)]
+/// use rand_os::rand_core::RngCore;
+/// use rand_os::OsRng;
+///
+/// let mut key = [0u8; 16];
+/// OsRng.fill_bytes(&mut key);
+/// let random_u64 = OsRng.next_u64();
+/// ```
+///
+/// [getrandom]: https://crates.io/crates/getrandom
+#[derive(Clone, Copy, Debug, Default)]
+pub struct OsRng;
impl OsRng {
/// Create a new `OsRng`.
+ #[deprecated(since="0.2.0", note="replace OsRng::new().unwrap() with just OsRng")]
pub fn new() -> Result<OsRng, Error> {
- imp::OsRng::new().map(OsRng)
+ Ok(OsRng)
}
}
@@ -182,258 +80,27 @@ impl RngCore for OsRng {
}
fn fill_bytes(&mut self, dest: &mut [u8]) {
- use std::{time, thread};
-
- // We cannot return Err(..), so we try to handle before panicking.
- const MAX_RETRY_PERIOD: u32 = 10; // max 10s
- const WAIT_DUR_MS: u32 = 100; // retry every 100ms
- let wait_dur = time::Duration::from_millis(WAIT_DUR_MS as u64);
- const RETRY_LIMIT: u32 = (MAX_RETRY_PERIOD * 1000) / WAIT_DUR_MS;
- const TRANSIENT_RETRIES: u32 = 8;
- let mut err_count = 0;
- let mut error_logged = false;
-
- // Maybe block until the OS RNG is initialized
- let mut read = 0;
- if let Ok(n) = self.0.test_initialized(dest, true) { read = n };
- let dest = &mut dest[read..];
-
- loop {
- if let Err(e) = self.try_fill_bytes(dest) {
- if err_count >= RETRY_LIMIT {
- error!("OsRng failed too many times; last error: {}", e);
- panic!("OsRng failed too many times; last error: {}", e);
- }
-
- if e.kind.should_wait() {
- if !error_logged {
- warn!("OsRng failed; waiting up to {}s and retrying. Error: {}",
- MAX_RETRY_PERIOD, e);
- error_logged = true;
- }
- err_count += 1;
- thread::sleep(wait_dur);
- continue;
- } else if e.kind.should_retry() {
- if !error_logged {
- warn!("OsRng failed; retrying up to {} times. Error: {}",
- TRANSIENT_RETRIES, e);
- error_logged = true;
- }
- err_count += (RETRY_LIMIT + TRANSIENT_RETRIES - 1)
- / TRANSIENT_RETRIES; // round up
- continue;
- } else {
- error!("OsRng failed: {}", e);
- panic!("OsRng fatal error: {}", e);
- }
- }
-
- break;
+ if let Err(e) = self.try_fill_bytes(dest) {
+ panic!("Error: {}", e);
}
}
fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- // Some systems do not support reading 0 random bytes.
- // (And why waste a system call?)
- if dest.len() == 0 { return Ok(()); }
-
- let read = self.0.test_initialized(dest, false)?;
- let dest = &mut dest[read..];
-
- let max = self.0.max_chunk_size();
- if dest.len() <= max {
- trace!("OsRng: reading {} bytes via {}",
- dest.len(), self.0.method_str());
- } else {
- trace!("OsRng: reading {} bytes via {} in {} chunks of {} bytes",
- dest.len(), self.0.method_str(), (dest.len() + max) / max, max);
- }
- for slice in dest.chunks_mut(max) {
- self.0.fill_chunk(slice)?;
- }
+ getrandom(dest)?;
Ok(())
}
}
-trait OsRngImpl where Self: Sized {
- // Create a new `OsRng` platform interface.
- fn new() -> Result<Self, Error>;
-
- // Fill a chunk with random bytes.
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error>;
-
- // Test whether the OS RNG is initialized. This method may not be possible
- // to support cheaply (or at all) on all operating systems.
- //
- // If `blocking` is set, this will cause the OS the block execution until
- // its RNG is initialized.
- //
- // Random values that are read while this are stored in `dest`, the amount
- // of read bytes is returned.
- fn test_initialized(&mut self, _dest: &mut [u8], _blocking: bool)
- -> Result<usize, Error> { Ok(0) }
-
- // Maximum chunk size supported.
- fn max_chunk_size(&self) -> usize { ::std::usize::MAX }
-
- // Name of the OS interface (used for logging).
- fn method_str(&self) -> &'static str;
-}
-
-#[cfg(any(target_os = "linux", target_os = "android",
- target_os = "netbsd", target_os = "dragonfly",
- target_os = "solaris", target_os = "redox",
- target_os = "haiku", target_os = "emscripten"))]
-mod random_device;
-
-macro_rules! mod_use {
- ($cond:meta, $module:ident) => {
- #[$cond]
- mod $module;
- #[$cond]
- use $module as imp;
- }
-}
-
-mod_use!(cfg(target_os = "android"), linux_android);
-mod_use!(cfg(target_os = "bitrig"), openbsd_bitrig);
-mod_use!(cfg(target_os = "cloudabi"), cloudabi);
-mod_use!(cfg(target_os = "dragonfly"), dragonfly_haiku_emscripten);
-mod_use!(cfg(target_os = "emscripten"), dragonfly_haiku_emscripten);
-mod_use!(cfg(target_os = "freebsd"), freebsd);
-mod_use!(cfg(target_os = "fuchsia"), fuchsia);
-mod_use!(cfg(target_os = "haiku"), dragonfly_haiku_emscripten);
-mod_use!(cfg(target_os = "ios"), macos);
-mod_use!(cfg(target_os = "linux"), linux_android);
-mod_use!(cfg(target_os = "macos"), macos);
-mod_use!(cfg(target_os = "netbsd"), netbsd);
-mod_use!(cfg(target_os = "openbsd"), openbsd_bitrig);
-mod_use!(cfg(target_os = "redox"), redox);
-mod_use!(cfg(target_os = "solaris"), solaris);
-mod_use!(cfg(windows), windows);
-mod_use!(cfg(target_env = "sgx"), sgx);
-
-mod_use!(
- cfg(all(
- target_arch = "wasm32",
- not(target_os = "emscripten"),
- feature = "wasm-bindgen"
- )),
- wasm32_bindgen
-);
-
-mod_use!(
- cfg(all(
- target_arch = "wasm32",
- not(target_os = "emscripten"),
- not(feature = "wasm-bindgen"),
- feature = "stdweb",
- )),
- wasm32_stdweb
-);
-
-/// Per #678 we use run-time failure where WASM bindings are missing
-#[cfg(all(
- target_arch = "wasm32",
- not(target_os = "emscripten"),
- not(feature = "wasm-bindgen"),
- not(feature = "stdweb"),
-))]
-mod imp {
- use rand_core::{Error, ErrorKind};
- use super::OsRngImpl;
-
- #[derive(Clone, Debug)]
- pub struct OsRng;
-
- impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> {
- Err(Error::new(ErrorKind::Unavailable,
- "OsRng: support for wasm32 requires emscripten, stdweb or wasm-bindgen"))
- }
-
- fn fill_chunk(&mut self, _dest: &mut [u8]) -> Result<(), Error> {
- unimplemented!()
- }
-
- fn method_str(&self) -> &'static str { unimplemented!() }
- }
+#[test]
+fn test_os_rng() {
+ let x = OsRng.next_u64();
+ let y = OsRng.next_u64();
+ assert!(x != 0);
+ assert!(x != y);
}
-#[cfg(not(any(
- target_os = "android",
- target_os = "bitrig",
- target_os = "cloudabi",
- target_os = "dragonfly",
- target_os = "emscripten",
- target_os = "freebsd",
- target_os = "fuchsia",
- target_os = "haiku",
- target_os = "ios",
- target_os = "linux",
- target_os = "macos",
- target_os = "netbsd",
- target_os = "openbsd",
- target_os = "redox",
- target_os = "solaris",
- windows,
- target_arch = "wasm32",
- target_env = "sgx"
-)))]
-compile_error!("OS RNG support is not available for this platform");
-
-// Due to rustwasm/wasm-bindgen#201 this can't be defined in the inner os
-// modules, so hack around it for now and place it at the root.
-#[cfg(all(feature = "wasm-bindgen", target_arch = "wasm32"))]
-#[doc(hidden)]
-#[allow(missing_debug_implementations)]
-pub mod __wbg_shims {
-
- // `extern { type Foo; }` isn't supported on 1.22 syntactically, so use a
- // macro to work around that.
- macro_rules! rust_122_compat {
- ($($t:tt)*) => ($($t)*)
- }
-
- rust_122_compat! {
- extern crate wasm_bindgen;
-
- pub use wasm_bindgen::prelude::*;
-
- #[wasm_bindgen]
- extern "C" {
- pub type Function;
- #[wasm_bindgen(constructor)]
- pub fn new(s: &str) -> Function;
- #[wasm_bindgen(method)]
- pub fn call(this: &Function, self_: &JsValue) -> JsValue;
-
- pub type This;
- #[wasm_bindgen(method, getter, structural, js_name = self)]
- pub fn self_(me: &This) -> JsValue;
- #[wasm_bindgen(method, getter, structural)]
- pub fn crypto(me: &This) -> JsValue;
-
- #[derive(Clone, Debug)]
- pub type BrowserCrypto;
-
- // TODO: these `structural` annotations here ideally wouldn't be here to
- // avoid a JS shim, but for now with feature detection they're
- // unavoidable.
- #[wasm_bindgen(method, js_name = getRandomValues, structural, getter)]
- pub fn get_random_values_fn(me: &BrowserCrypto) -> JsValue;
- #[wasm_bindgen(method, js_name = getRandomValues, structural)]
- pub fn get_random_values(me: &BrowserCrypto, buf: &mut [u8]);
-
- #[wasm_bindgen(js_name = require)]
- pub fn node_require(s: &str) -> NodeCrypto;
-
- #[derive(Clone, Debug)]
- pub type NodeCrypto;
-
- #[wasm_bindgen(method, js_name = randomFillSync, structural)]
- pub fn random_fill_sync(me: &NodeCrypto, buf: &mut [u8]);
- }
- }
+#[test]
+fn test_construction() {
+ let mut rng = OsRng::default();
+ assert!(rng.next_u64() != 0);
}
diff --git a/rand/rand_os/src/linux_android.rs b/rand/rand_os/src/linux_android.rs
deleted file mode 100644
index 9622f93..0000000
--- a/rand/rand_os/src/linux_android.rs
+++ /dev/null
@@ -1,182 +0,0 @@
-// 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 Linux / Android
-
-extern crate libc;
-
-use rand_core::{Error, ErrorKind};
-use super::random_device;
-use super::OsRngImpl;
-
-use std::io;
-use std::io::Read;
-use std::fs::{File, OpenOptions};
-use std::os::unix::fs::OpenOptionsExt;
-use std::sync::atomic::{AtomicBool, ATOMIC_BOOL_INIT, Ordering};
-use std::sync::{Once, ONCE_INIT};
-
-#[derive(Clone, Debug)]
-pub struct OsRng {
- method: OsRngMethod,
- initialized: bool,
-}
-
-#[derive(Clone, Debug)]
-enum OsRngMethod {
- GetRandom,
- RandomDevice,
-}
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> {
- if is_getrandom_available() {
- return Ok(OsRng { method: OsRngMethod::GetRandom,
- initialized: false });
- }
- random_device::open("/dev/urandom", &|p| File::open(p))?;
- Ok(OsRng { method: OsRngMethod::RandomDevice, initialized: false })
- }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- match self.method {
- OsRngMethod::GetRandom => getrandom_try_fill(dest, false),
- OsRngMethod::RandomDevice => random_device::read(dest),
- }
- }
-
- fn test_initialized(&mut self, dest: &mut [u8], blocking: bool)
- -> Result<usize, Error>
- {
- static OS_RNG_INITIALIZED: AtomicBool = ATOMIC_BOOL_INIT;
- if !self.initialized {
- self.initialized = OS_RNG_INITIALIZED.load(Ordering::Relaxed);
- }
- if self.initialized { return Ok(0); }
-
- let result = match self.method {
- OsRngMethod::GetRandom => {
- getrandom_try_fill(dest, blocking)?;
- Ok(dest.len())
- }
- OsRngMethod::RandomDevice => {
- info!("OsRng: testing random device /dev/random");
- let mut file = OpenOptions::new()
- .read(true)
- .custom_flags(if blocking { 0 } else { libc::O_NONBLOCK })
- .open("/dev/random")
- .map_err(random_device::map_err)?;
- file.read(&mut dest[..1]).map_err(random_device::map_err)?;
- Ok(1)
- }
- };
- OS_RNG_INITIALIZED.store(true, Ordering::Relaxed);
- self.initialized = true;
- result
- }
-
- fn method_str(&self) -> &'static str {
- match self.method {
- OsRngMethod::GetRandom => "getrandom",
- OsRngMethod::RandomDevice => "/dev/urandom",
- }
- }
-}
-
-#[cfg(target_arch = "x86_64")]
-const NR_GETRANDOM: libc::c_long = 318;
-#[cfg(target_arch = "x86")]
-const NR_GETRANDOM: libc::c_long = 355;
-#[cfg(target_arch = "arm")]
-const NR_GETRANDOM: libc::c_long = 384;
-#[cfg(target_arch = "aarch64")]
-const NR_GETRANDOM: libc::c_long = 278;
- #[cfg(target_arch = "s390x")]
-const NR_GETRANDOM: libc::c_long = 349;
-#[cfg(target_arch = "powerpc")]
-const NR_GETRANDOM: libc::c_long = 359;
-#[cfg(target_arch = "powerpc64")]
-const NR_GETRANDOM: libc::c_long = 359;
-#[cfg(target_arch = "mips")] // old ABI
-const NR_GETRANDOM: libc::c_long = 4353;
-#[cfg(target_arch = "mips64")]
-const NR_GETRANDOM: libc::c_long = 5313;
-#[cfg(target_arch = "sparc")]
-const NR_GETRANDOM: libc::c_long = 347;
-#[cfg(target_arch = "sparc64")]
-const NR_GETRANDOM: libc::c_long = 347;
-#[cfg(not(any(target_arch = "x86_64", target_arch = "x86",
- target_arch = "arm", target_arch = "aarch64",
- target_arch = "s390x", target_arch = "powerpc",
- target_arch = "powerpc64", target_arch = "mips",
- target_arch = "mips64", target_arch = "sparc",
- target_arch = "sparc64")))]
-const NR_GETRANDOM: libc::c_long = 0;
-
-fn getrandom(buf: &mut [u8], blocking: bool) -> libc::c_long {
- const GRND_NONBLOCK: libc::c_uint = 0x0001;
-
- if NR_GETRANDOM == 0 { return -1 };
-
- unsafe {
- libc::syscall(NR_GETRANDOM, buf.as_mut_ptr(), buf.len(),
- if blocking { 0 } else { GRND_NONBLOCK })
- }
-}
-
-fn getrandom_try_fill(dest: &mut [u8], blocking: bool) -> Result<(), Error> {
- let mut read = 0;
- while read < dest.len() {
- let result = getrandom(&mut dest[read..], blocking);
- if result == -1 {
- let err = io::Error::last_os_error();
- let kind = err.kind();
- if kind == io::ErrorKind::Interrupted {
- continue;
- } else if kind == io::ErrorKind::WouldBlock {
- return Err(Error::with_cause(
- ErrorKind::NotReady,
- "getrandom not ready",
- err,
- ));
- } else {
- return Err(Error::with_cause(
- ErrorKind::Unavailable,
- "unexpected getrandom error",
- err,
- ));
- }
- } else {
- read += result as usize;
- }
- }
- Ok(())
-}
-
-fn is_getrandom_available() -> bool {
- static CHECKER: Once = ONCE_INIT;
- static AVAILABLE: AtomicBool = ATOMIC_BOOL_INIT;
-
- if NR_GETRANDOM == 0 { return false };
-
- CHECKER.call_once(|| {
- debug!("OsRng: testing getrandom");
- let mut buf: [u8; 0] = [];
- let result = getrandom(&mut buf, false);
- let available = if result == -1 {
- let err = io::Error::last_os_error().raw_os_error();
- err != Some(libc::ENOSYS)
- } else {
- true
- };
- AVAILABLE.store(available, Ordering::Relaxed);
- info!("OsRng: using {}", if available { "getrandom" } else { "/dev/urandom" });
- });
-
- AVAILABLE.load(Ordering::Relaxed)
-}
diff --git a/rand/rand_os/src/macos.rs b/rand/rand_os/src/macos.rs
deleted file mode 100644
index 6c67251..0000000
--- a/rand/rand_os/src/macos.rs
+++ /dev/null
@@ -1,53 +0,0 @@
-// 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 MacOS / iOS
-
-extern crate libc;
-
-use rand_core::{Error, ErrorKind};
-use super::OsRngImpl;
-
-use std::io;
-use self::libc::{c_int, size_t};
-
-#[derive(Clone, Debug)]
-pub struct OsRng;
-
-enum SecRandom {}
-
-#[allow(non_upper_case_globals)]
-const kSecRandomDefault: *const SecRandom = 0 as *const SecRandom;
-
-#[link(name = "Security", kind = "framework")]
-extern {
- fn SecRandomCopyBytes(rnd: *const SecRandom,
- count: size_t, bytes: *mut u8) -> c_int;
-}
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> { Ok(OsRng) }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- let ret = unsafe {
- SecRandomCopyBytes(kSecRandomDefault,
- dest.len() as size_t,
- dest.as_mut_ptr())
- };
- if ret == -1 {
- Err(Error::with_cause(
- ErrorKind::Unavailable,
- "couldn't generate random bytes",
- io::Error::last_os_error()))
- } else {
- Ok(())
- }
- }
-
- fn method_str(&self) -> &'static str { "SecRandomCopyBytes" }
-}
diff --git a/rand/rand_os/src/netbsd.rs b/rand/rand_os/src/netbsd.rs
deleted file mode 100644
index cf4b6c7..0000000
--- a/rand/rand_os/src/netbsd.rs
+++ /dev/null
@@ -1,54 +0,0 @@
-// 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 NetBSD
-
-use rand_core::Error;
-use super::random_device;
-use super::OsRngImpl;
-
-use std::fs::File;
-use std::io::Read;
-use std::sync::atomic::{AtomicBool, ATOMIC_BOOL_INIT, Ordering};
-
-#[derive(Clone, Debug)]
-pub struct OsRng { initialized: bool }
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> {
- random_device::open("/dev/urandom", &|p| File::open(p))?;
- Ok(OsRng { initialized: false })
- }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- random_device::read(dest)
- }
-
- // Read a single byte from `/dev/random` to determine if the OS RNG is
- // already seeded. NetBSD always blocks if not yet ready.
- fn test_initialized(&mut self, dest: &mut [u8], _blocking: bool)
- -> Result<usize, Error>
- {
- static OS_RNG_INITIALIZED: AtomicBool = ATOMIC_BOOL_INIT;
- if !self.initialized {
- self.initialized = OS_RNG_INITIALIZED.load(Ordering::Relaxed);
- }
- if self.initialized { return Ok(0); }
-
- info!("OsRng: testing random device /dev/random");
- let mut file =
- File::open("/dev/random").map_err(random_device::map_err)?;
- file.read(&mut dest[..1]).map_err(random_device::map_err)?;
-
- OS_RNG_INITIALIZED.store(true, Ordering::Relaxed);
- self.initialized = true;
- Ok(1)
- }
-
- fn method_str(&self) -> &'static str { "/dev/urandom" }
-}
diff --git a/rand/rand_os/src/openbsd_bitrig.rs b/rand/rand_os/src/openbsd_bitrig.rs
deleted file mode 100644
index c9b35a6..0000000
--- a/rand/rand_os/src/openbsd_bitrig.rs
+++ /dev/null
@@ -1,40 +0,0 @@
-// 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 OpenBSD / Bitrig
-
-extern crate libc;
-
-use rand_core::{Error, ErrorKind};
-use super::OsRngImpl;
-
-use std::io;
-
-#[derive(Clone, Debug)]
-pub struct OsRng;
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> { Ok(OsRng) }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- let ret = unsafe {
- libc::getentropy(dest.as_mut_ptr() as *mut libc::c_void, dest.len())
- };
- if ret == -1 {
- return Err(Error::with_cause(
- ErrorKind::Unavailable,
- "getentropy failed",
- io::Error::last_os_error()));
- }
- Ok(())
- }
-
- fn max_chunk_size(&self) -> usize { 256 }
-
- fn method_str(&self) -> &'static str { "getentropy" }
-}
diff --git a/rand/rand_os/src/random_device.rs b/rand/rand_os/src/random_device.rs
deleted file mode 100644
index 5da9194..0000000
--- a/rand/rand_os/src/random_device.rs
+++ /dev/null
@@ -1,70 +0,0 @@
-// 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.
-
-//! Helper functions to read from a random device such as `/dev/urandom`.
-//!
-//! All instances use a single internal file handle, to prevent possible
-//! exhaustion of file descriptors.
-use rand_core::{Error, ErrorKind};
-use std::fs::File;
-use std::io;
-use std::io::Read;
-use std::sync::{Once, Mutex, ONCE_INIT};
-
-// TODO: remove outer Option when `Mutex::new(None)` is a constant expression
-static mut READ_RNG_FILE: Option<Mutex<Option<File>>> = None;
-static READ_RNG_ONCE: Once = ONCE_INIT;
-
-#[allow(unused)]
-pub fn open<F>(path: &'static str, open_fn: F) -> Result<(), Error>
- where F: Fn(&'static str) -> Result<File, io::Error>
-{
- READ_RNG_ONCE.call_once(|| {
- unsafe { READ_RNG_FILE = Some(Mutex::new(None)) }
- });
-
- // We try opening the file outside the `call_once` fn because we cannot
- // clone the error, thus we must retry on failure.
-
- let mutex = unsafe { READ_RNG_FILE.as_ref().unwrap() };
- let mut guard = mutex.lock().unwrap();
- if (*guard).is_none() {
- info!("OsRng: opening random device {}", path);
- let file = open_fn(path).map_err(map_err)?;
- *guard = Some(file);
- };
- Ok(())
-}
-
-pub fn read(dest: &mut [u8]) -> Result<(), Error> {
- // We expect this function only to be used after `random_device::open`
- // was succesful. Therefore we can assume that our memory was set with a
- // valid object.
- let mutex = unsafe { READ_RNG_FILE.as_ref().unwrap() };
- let mut guard = mutex.lock().unwrap();
- let file = (*guard).as_mut().unwrap();
-
- // Use `std::io::read_exact`, which retries on `ErrorKind::Interrupted`.
- file.read_exact(dest).map_err(|err| {
- Error::with_cause(ErrorKind::Unavailable,
- "error reading random device", err)
- })
-
-}
-
-pub fn map_err(err: io::Error) -> Error {
- match err.kind() {
- io::ErrorKind::Interrupted =>
- Error::new(ErrorKind::Transient, "interrupted"),
- io::ErrorKind::WouldBlock =>
- Error::with_cause(ErrorKind::NotReady,
- "OS RNG not yet seeded", err),
- _ => Error::with_cause(ErrorKind::Unavailable,
- "error while opening random device", err)
- }
-}
diff --git a/rand/rand_os/src/redox.rs b/rand/rand_os/src/redox.rs
deleted file mode 100644
index 36fae26..0000000
--- a/rand/rand_os/src/redox.rs
+++ /dev/null
@@ -1,30 +0,0 @@
-// 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 Redox
-
-use rand_core::Error;
-use super::random_device;
-use super::OsRngImpl;
-use std::fs::File;
-
-#[derive(Clone, Debug)]
-pub struct OsRng();
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> {
- random_device::open("rand:", &|p| File::open(p))?;
- Ok(OsRng())
- }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- random_device::read(dest)
- }
-
- fn method_str(&self) -> &'static str { "'rand:'" }
-}
diff --git a/rand/rand_os/src/sgx.rs b/rand/rand_os/src/sgx.rs
deleted file mode 100644
index 43ae0ef..0000000
--- a/rand/rand_os/src/sgx.rs
+++ /dev/null
@@ -1,38 +0,0 @@
-// 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.
-
-use super::OsRngImpl;
-use Error;
-use rdrand::RdRand;
-use rand_core::RngCore;
-use std::fmt::{Debug, Formatter, Result as FmtResult};
-
-#[derive(Clone)]
-pub struct OsRng{
- gen: RdRand
-}
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> {
- let rng = RdRand::new()?;
- Ok(OsRng{ gen: rng })
- }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- self.gen.try_fill_bytes(dest)
- }
-
- fn method_str(&self) -> &'static str { "RDRAND" }
-}
-
-impl Debug for OsRng {
- fn fmt(&self, f: &mut Formatter) -> FmtResult {
- f.debug_struct("OsRng")
- .finish()
- }
-}
diff --git a/rand/rand_os/src/solaris.rs b/rand/rand_os/src/solaris.rs
deleted file mode 100644
index e8965fd..0000000
--- a/rand/rand_os/src/solaris.rs
+++ /dev/null
@@ -1,175 +0,0 @@
-// 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 the Solaris family
-//!
-//! Read from `/dev/random`, with chunks of limited size (1040 bytes).
-//! `/dev/random` uses the Hash_DRBG with SHA512 algorithm from NIST SP 800-90A.
-//! `/dev/urandom` uses the FIPS 186-2 algorithm, which is considered less
-//! secure. We choose to read from `/dev/random`.
-//!
-//! Since Solaris 11.3 the `getrandom` syscall is available. To make sure we can
-//! compile on both Solaris and on OpenSolaris derivatives, that do not have the
-//! function, we do a direct syscall instead of calling a library function.
-//!
-//! We have no way to differentiate between Solaris, illumos, SmartOS, etc.
-extern crate libc;
-
-use rand_core::{Error, ErrorKind};
-use super::random_device;
-use super::OsRngImpl;
-
-use std::io;
-use std::io::Read;
-use std::fs::{File, OpenOptions};
-use std::os::unix::fs::OpenOptionsExt;
-use std::sync::atomic::{AtomicBool, ATOMIC_BOOL_INIT, Ordering};
-use std::cmp;
-
-#[derive(Clone, Debug)]
-pub struct OsRng {
- method: OsRngMethod,
- initialized: bool,
-}
-
-#[derive(Clone, Debug)]
-enum OsRngMethod {
- GetRandom,
- RandomDevice,
-}
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> {
- if is_getrandom_available() {
- return Ok(OsRng { method: OsRngMethod::GetRandom,
- initialized: false });
- }
- let open = |p| OpenOptions::new()
- .read(true)
- .custom_flags(libc::O_NONBLOCK)
- .open(p);
- random_device::open("/dev/random", &open)?;
- Ok(OsRng { method: OsRngMethod::RandomDevice, initialized: false })
- }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- match self.method {
- OsRngMethod::GetRandom => getrandom_try_fill(dest, false),
- OsRngMethod::RandomDevice => random_device::read(dest),
- }
- }
-
- fn test_initialized(&mut self, dest: &mut [u8], blocking: bool)
- -> Result<usize, Error>
- {
- static OS_RNG_INITIALIZED: AtomicBool = ATOMIC_BOOL_INIT;
- if !self.initialized {
- self.initialized = OS_RNG_INITIALIZED.load(Ordering::Relaxed);
- }
- if self.initialized { return Ok(0); }
-
- let chunk_len = cmp::min(1024, dest.len());
- let dest = &mut dest[..chunk_len];
-
- match self.method {
- OsRngMethod::GetRandom => getrandom_try_fill(dest, blocking)?,
- OsRngMethod::RandomDevice => {
- if blocking {
- info!("OsRng: testing random device /dev/random");
- // We already have a non-blocking handle, but now need a
- // blocking one. Not much choice except opening it twice
- let mut file = File::open("/dev/random")
- .map_err(random_device::map_err)?;
- file.read(dest).map_err(random_device::map_err)?;
- } else {
- self.fill_chunk(dest)?;
- }
- }
- };
- OS_RNG_INITIALIZED.store(true, Ordering::Relaxed);
- self.initialized = true;
- Ok(chunk_len)
- }
-
- fn max_chunk_size(&self) -> usize {
- // The documentation says 1024 is the maximum for getrandom, but
- // 1040 for /dev/random.
- 1024
- }
-
- fn method_str(&self) -> &'static str {
- match self.method {
- OsRngMethod::GetRandom => "getrandom",
- OsRngMethod::RandomDevice => "/dev/random",
- }
- }
-}
-
-fn getrandom(buf: &mut [u8], blocking: bool) -> libc::c_long {
- extern "C" {
- fn syscall(number: libc::c_long, ...) -> libc::c_long;
- }
-
- const SYS_GETRANDOM: libc::c_long = 143;
- const GRND_NONBLOCK: libc::c_uint = 0x0001;
- const GRND_RANDOM: libc::c_uint = 0x0002;
-
- unsafe {
- syscall(SYS_GETRANDOM, buf.as_mut_ptr(), buf.len(),
- if blocking { 0 } else { GRND_NONBLOCK } | GRND_RANDOM)
- }
-}
-
-fn getrandom_try_fill(dest: &mut [u8], blocking: bool) -> Result<(), Error> {
- let result = getrandom(dest, blocking);
- if result == -1 || result == 0 {
- let err = io::Error::last_os_error();
- let kind = err.kind();
- if kind == io::ErrorKind::WouldBlock {
- return Err(Error::with_cause(
- ErrorKind::NotReady,
- "getrandom not ready",
- err,
- ));
- } else {
- return Err(Error::with_cause(
- ErrorKind::Unavailable,
- "unexpected getrandom error",
- err,
- ));
- }
- } else if result != dest.len() as i64 {
- return Err(Error::new(ErrorKind::Unavailable,
- "unexpected getrandom error"));
- }
- Ok(())
-}
-
-fn is_getrandom_available() -> bool {
- use std::sync::atomic::{AtomicBool, ATOMIC_BOOL_INIT, Ordering};
- use std::sync::{Once, ONCE_INIT};
-
- static CHECKER: Once = ONCE_INIT;
- static AVAILABLE: AtomicBool = ATOMIC_BOOL_INIT;
-
- CHECKER.call_once(|| {
- debug!("OsRng: testing getrandom");
- let mut buf: [u8; 0] = [];
- let result = getrandom(&mut buf, false);
- let available = if result == -1 {
- let err = io::Error::last_os_error().raw_os_error();
- err != Some(libc::ENOSYS)
- } else {
- true
- };
- AVAILABLE.store(available, Ordering::Relaxed);
- info!("OsRng: using {}", if available { "getrandom" } else { "/dev/random" });
- });
-
- AVAILABLE.load(Ordering::Relaxed)
-}
diff --git a/rand/rand_os/src/wasm32_bindgen.rs b/rand/rand_os/src/wasm32_bindgen.rs
deleted file mode 100644
index 8e7c979..0000000
--- a/rand/rand_os/src/wasm32_bindgen.rs
+++ /dev/null
@@ -1,125 +0,0 @@
-// 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 WASM via wasm-bindgen
-
-use rand_core::{Error, ErrorKind};
-use super::OsRngImpl;
-
-use wasm_bindgen::prelude::*;
-
-#[wasm_bindgen]
-extern "C" {
- pub type Function;
- #[wasm_bindgen(constructor)]
- pub fn new(s: &str) -> Function;
- #[wasm_bindgen(method)]
- pub fn call(this: &Function, self_: &JsValue) -> JsValue;
-
- pub type This;
- #[wasm_bindgen(method, getter, structural, js_name = self)]
- pub fn self_(me: &This) -> JsValue;
- #[wasm_bindgen(method, getter, structural)]
- pub fn crypto(me: &This) -> JsValue;
-
- #[derive(Clone, Debug)]
- pub type BrowserCrypto;
-
- // TODO: these `structural` annotations here ideally wouldn't be here to
- // avoid a JS shim, but for now with feature detection they're
- // unavoidable.
- #[wasm_bindgen(method, js_name = getRandomValues, structural, getter)]
- pub fn get_random_values_fn(me: &BrowserCrypto) -> JsValue;
- #[wasm_bindgen(method, js_name = getRandomValues, structural)]
- pub fn get_random_values(me: &BrowserCrypto, buf: &mut [u8]);
-
- #[wasm_bindgen(js_name = require)]
- pub fn node_require(s: &str) -> NodeCrypto;
-
- #[derive(Clone, Debug)]
- pub type NodeCrypto;
-
- #[wasm_bindgen(method, js_name = randomFillSync, structural)]
- pub fn random_fill_sync(me: &NodeCrypto, buf: &mut [u8]);
-}
-
-#[derive(Clone, Debug)]
-pub enum OsRng {
- Node(NodeCrypto),
- Browser(BrowserCrypto),
-}
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> {
- // First up we need to detect if we're running in node.js or a
- // browser. To do this we get ahold of the `this` object (in a bit
- // of a roundabout fashion).
- //
- // Once we have `this` we look at its `self` property, which is
- // only defined on the web (either a main window or web worker).
- let this = Function::new("return this").call(&JsValue::undefined());
- assert!(this != JsValue::undefined());
- let this = This::from(this);
- let is_browser = this.self_() != JsValue::undefined();
-
- if !is_browser {
- return Ok(OsRng::Node(node_require("crypto")))
- }
-
- // If `self` is defined then we're in a browser somehow (main window
- // or web worker). Here we want to try to use
- // `crypto.getRandomValues`, but if `crypto` isn't defined we assume
- // we're in an older web browser and the OS RNG isn't available.
- let crypto = this.crypto();
- if crypto.is_undefined() {
- let msg = "self.crypto is undefined";
- return Err(Error::new(ErrorKind::Unavailable, msg))
- }
-
- // Test if `crypto.getRandomValues` is undefined as well
- let crypto: BrowserCrypto = crypto.into();
- if crypto.get_random_values_fn().is_undefined() {
- let msg = "crypto.getRandomValues is undefined";
- return Err(Error::new(ErrorKind::Unavailable, msg))
- }
-
- // Ok! `self.crypto.getRandomValues` is a defined value, so let's
- // assume we can do browser crypto.
- Ok(OsRng::Browser(crypto))
- }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- match *self {
- OsRng::Node(ref n) => n.random_fill_sync(dest),
- OsRng::Browser(ref n) => n.get_random_values(dest),
- }
- Ok(())
- }
-
- fn max_chunk_size(&self) -> usize {
- match *self {
- OsRng::Node(_) => usize::max_value(),
- OsRng::Browser(_) => {
- // see https://developer.mozilla.org/en-US/docs/Web/API/Crypto/getRandomValues
- //
- // where it says:
- //
- // > A QuotaExceededError DOMException is thrown if the
- // > requested length is greater than 65536 bytes.
- 65536
- }
- }
- }
-
- fn method_str(&self) -> &'static str {
- match *self {
- OsRng::Node(_) => "crypto.randomFillSync",
- OsRng::Browser(_) => "crypto.getRandomValues",
- }
- }
-}
diff --git a/rand/rand_os/src/wasm32_stdweb.rs b/rand/rand_os/src/wasm32_stdweb.rs
deleted file mode 100644
index 3be0ce6..0000000
--- a/rand/rand_os/src/wasm32_stdweb.rs
+++ /dev/null
@@ -1,107 +0,0 @@
-// 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 WASM via stdweb
-
-use std::mem;
-use stdweb::unstable::TryInto;
-use stdweb::web::error::Error as WebError;
-use rand_core::{Error, ErrorKind};
-use super::OsRngImpl;
-
-#[derive(Clone, Debug)]
-enum OsRngMethod {
- Browser,
- Node
-}
-
-#[derive(Clone, Debug)]
-pub struct OsRng(OsRngMethod);
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> {
- let result = js! {
- try {
- if (
- typeof self === "object" &&
- typeof self.crypto === "object" &&
- typeof self.crypto.getRandomValues === "function"
- ) {
- return { success: true, ty: 1 };
- }
-
- if (typeof require("crypto").randomBytes === "function") {
- return { success: true, ty: 2 };
- }
-
- return { success: false, error: new Error("not supported") };
- } catch(err) {
- return { success: false, error: err };
- }
- };
-
- if js!{ return @{ result.as_ref() }.success } == true {
- let ty = js!{ return @{ result }.ty };
-
- if ty == 1 { Ok(OsRng(OsRngMethod::Browser)) }
- else if ty == 2 { Ok(OsRng(OsRngMethod::Node)) }
- else { unreachable!() }
- } else {
- let err: WebError = js!{ return @{ result }.error }.try_into().unwrap();
- Err(Error::with_cause(ErrorKind::Unavailable, "WASM Error", err))
- }
- }
-
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- assert_eq!(mem::size_of::<usize>(), 4);
-
- let len = dest.len() as u32;
- let ptr = dest.as_mut_ptr() as i32;
-
- let result = match self.0 {
- OsRngMethod::Browser => js! {
- try {
- let array = new Uint8Array(@{ len });
- self.crypto.getRandomValues(array);
- HEAPU8.set(array, @{ ptr });
-
- return { success: true };
- } catch(err) {
- return { success: false, error: err };
- }
- },
- OsRngMethod::Node => js! {
- try {
- let bytes = require("crypto").randomBytes(@{ len });
- HEAPU8.set(new Uint8Array(bytes), @{ ptr });
-
- return { success: true };
- } catch(err) {
- return { success: false, error: err };
- }
- }
- };
-
- if js!{ return @{ result.as_ref() }.success } == true {
- Ok(())
- } else {
- let err: WebError = js!{ return @{ result }.error }.try_into().unwrap();
- Err(Error::with_cause(ErrorKind::Unexpected, "WASM Error", err))
- }
- }
-
- fn max_chunk_size(&self) -> usize { 65536 }
-
- fn method_str(&self) -> &'static str {
- match self.0 {
- OsRngMethod::Browser => "Crypto.getRandomValues",
- OsRngMethod::Node => "crypto.randomBytes",
- }
- }
-}
diff --git a/rand/rand_os/src/windows.rs b/rand/rand_os/src/windows.rs
deleted file mode 100644
index 6b06c7a..0000000
--- a/rand/rand_os/src/windows.rs
+++ /dev/null
@@ -1,44 +0,0 @@
-// 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 Windows
-
-extern crate winapi;
-
-use rand_core::{Error, ErrorKind};
-use super::OsRngImpl;
-
-use std::io;
-
-use self::winapi::shared::minwindef::ULONG;
-use self::winapi::um::ntsecapi::RtlGenRandom;
-use self::winapi::um::winnt::PVOID;
-
-#[derive(Clone, Debug)]
-pub struct OsRng;
-
-impl OsRngImpl for OsRng {
- fn new() -> Result<OsRng, Error> { Ok(OsRng) }
-
- fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
- let ret = unsafe {
- RtlGenRandom(dest.as_mut_ptr() as PVOID, dest.len() as ULONG)
- };
- if ret == 0 {
- return Err(Error::with_cause(
- ErrorKind::Unavailable,
- "couldn't generate random bytes",
- io::Error::last_os_error()));
- }
- Ok(())
- }
-
- fn max_chunk_size(&self) -> usize { <ULONG>::max_value() as usize }
-
- fn method_str(&self) -> &'static str { "RtlGenRandom" }
-}
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-08 13:58:47 +0000