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-rw-r--r--getrandom/src/wasm32_stdweb.rs114
1 files changed, 0 insertions, 114 deletions
diff --git a/getrandom/src/wasm32_stdweb.rs b/getrandom/src/wasm32_stdweb.rs
deleted file mode 100644
index 6e5e78a..0000000
--- a/getrandom/src/wasm32_stdweb.rs
+++ /dev/null
@@ -1,114 +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
-extern crate std;
-
-use core::mem;
-
-use stdweb::js;
-use stdweb::unstable::TryInto;
-use stdweb::web::error::Error as WebError;
-
-use crate::error::{STDWEB_NO_RNG, STDWEB_RNG_FAILED};
-use crate::Error;
-use std::sync::Once;
-
-#[derive(Clone, Copy, Debug)]
-enum RngSource {
- Browser,
- Node,
-}
-
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
- assert_eq!(mem::size_of::<usize>(), 4);
- static ONCE: Once = Once::new();
- static mut RNG_SOURCE: Result<RngSource, Error> = Ok(RngSource::Node);
-
- // SAFETY: RNG_SOURCE is only written once, before being read.
- ONCE.call_once(|| unsafe {
- RNG_SOURCE = getrandom_init();
- });
- getrandom_fill(unsafe { RNG_SOURCE }?, dest)
-}
-
-fn getrandom_init() -> Result<RngSource, 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(RngSource::Browser)
- } else if ty == 2 {
- Ok(RngSource::Node)
- } else {
- unreachable!()
- }
- } else {
- let _err: WebError = js! { return @{ result }.error }.try_into().unwrap();
- error!("getrandom unavailable: {}", _err);
- Err(STDWEB_NO_RNG)
- }
-}
-
-fn getrandom_fill(source: RngSource, dest: &mut [u8]) -> Result<(), Error> {
- for chunk in dest.chunks_mut(65536) {
- let len = chunk.len() as u32;
- let ptr = chunk.as_mut_ptr() as i32;
-
- let result = match source {
- RngSource::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 };
- }
- },
- RngSource::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 {
- let _err: WebError = js! { return @{ result }.error }.try_into().unwrap();
- error!("getrandom failed: {}", _err);
- return Err(STDWEB_RNG_FAILED);
- }
- }
- Ok(())
-}