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use getrandom instead of rand

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This commit is contained in:
newpavlov
2019-10-28 18:33:15 +03:00
parent 8653216b1a
commit b67f2c9f18
6 changed files with 17 additions and 16 deletions
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4
lib/emscripten/src/syscalls/windows.rs
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@ -2,7 +2,6 @@ use crate::utils::{copy_cstr_into_wasm, get_cstr_path};
use crate::varargs::VarArgs;
use libc::mkdir;
use libc::open;
use rand::Rng;
use std::env;
use std::ffi::CString;
use std::fs::File;
@ -39,7 +38,8 @@ pub fn ___syscall5(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
let ptr = tmp_dir_c_str.as_ptr() as *const i8;
let mut urandom_file = File::create(tmp_dir).unwrap();
// create some random bytes and put them into the file
let random_bytes = rand::thread_rng().gen::<[u8; 32]>();
let mut random_bytes = [0u8; 32];
getrandom::getrandom(random_bytes).unwrap();
let _ = urandom_file.write_all(&random_bytes).unwrap();
// put the file path string into wasm memory
let urandom_file_offset = unsafe { copy_cstr_into_wasm(ctx, ptr) };