aboutsummaryrefslogtreecommitdiff
path: root/rand/rand_os/src/wasm32_stdweb.rs
diff options
context:
space:
mode:
Diffstat (limited to 'rand/rand_os/src/wasm32_stdweb.rs')
-rw-r--r--rand/rand_os/src/wasm32_stdweb.rs107
1 files changed, 0 insertions, 107 deletions
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",
- }
- }
-}