Use Base64 for encoding asciicast data during transfer

app/assets/javascripts/player/movie.js.coffee

@@ -28,7 +28,9 @@ class AsciiIo.Movie
             @_data = event.data
             @trigger('movie-loaded', @model)
 
-          worker.postMessage(@model.get('escaped_stdout_data'))
+          data = @model.get('escaped_stdout_data')
+          data = atob(data)
+          worker.postMessage(data)
         else
           @trigger('movie-loaded', @model)
 
@@ -39,7 +41,7 @@ class AsciiIo.Movie
     unless @_data
       # fallback for webworker
       d = @model.get('escaped_stdout_data')
-      d = eval "'" + d + "'"
+      d = atob(d)
       d = ArchUtils.bz2.decode(d)
       @_data = d
 

app/decorators/asciicast_decorator.rb

@@ -1,3 +1,5 @@
+require 'base64'
+
 class AsciicastDecorator < ApplicationDecorator
   decorates :asciicast
 
@@ -14,7 +16,7 @@ class AsciicastDecorator < ApplicationDecorator
 
   def escaped_stdout_data
     if data = stdout.read
-      data.bytes.map { |b| '\x' + format('%02x', b) }.join
+      Base64.strict_encode64(data)
     else
       nil
     end

public/uncompress.js

@@ -444,7 +444,6 @@ this.tell = function() {
 this.onmessage = function(e) {
   var data = e.data;
 
-  data = eval("'" + data + "'");
   data = ArchUtils.bz2.decode(data);
 
   postMessage(data);