Add crypto.getRandomValues() (#2327)

cli/BUILD.gn

@@ -88,6 +88,7 @@ ts_sources = [
   "../js/files.ts",
   "../js/flatbuffers.ts",
   "../js/form_data.ts",
+  "../js/get_random_values.ts",
   "../js/globals.ts",
   "../js/headers.ts",
   "../js/io.ts",

cli/main.rs

@@ -11,6 +11,7 @@ extern crate clap;
 extern crate deno;
 #[cfg(unix)]
 extern crate nix;
+extern crate rand;
 
 mod ansi;
 pub mod compiler;

cli/msg.fbs

@@ -19,6 +19,7 @@ union Any {
   FetchRes,
   FormatError,
   FormatErrorRes,
+  GetRandomValues,
   GlobalTimer,
   GlobalTimerRes,
   GlobalTimerStop,
@@ -578,4 +579,6 @@ table Seek {
   whence: uint;
 }
 
+table GetRandomValues {}
+
 root_type Base;

cli/ops.rs

@@ -13,6 +13,7 @@ use crate::js_errors::apply_source_map;
 use crate::js_errors::JSErrorColor;
 use crate::msg;
 use crate::msg_util;
+use crate::rand;
 use crate::repl;
 use crate::resolve_addr::resolve_addr;
 use crate::resources;
@@ -39,6 +40,7 @@ use futures::Sink;
 use futures::Stream;
 use hyper;
 use hyper::rt::Future;
+use rand::{thread_rng, Rng};
 use remove_dir_all::remove_dir_all;
 use std;
 use std::convert::From;
@@ -195,6 +197,7 @@ pub fn op_selector_std(inner_type: msg::Any) -> Option<OpCreator> {
     msg::Any::Exit => Some(op_exit),
     msg::Any::Fetch => Some(op_fetch),
     msg::Any::FormatError => Some(op_format_error),
+    msg::Any::GetRandomValues => Some(op_get_random_values),
     msg::Any::GlobalTimer => Some(op_global_timer),
     msg::Any::GlobalTimerStop => Some(op_global_timer_stop),
     msg::Any::IsTTY => Some(op_is_tty),
@@ -2168,3 +2171,12 @@ fn op_host_post_message(
   });
   Box::new(op)
 }
+
+fn op_get_random_values(
+  _state: &ThreadSafeState,
+  _base: &msg::Base<'_>,
+  data: Option<PinnedBuf>,
+) -> Box<OpWithError> {
+  thread_rng().fill(&mut data.unwrap()[..]);
+  Box::new(ok_future(empty_buf()))
+}