oconnore

(function(exports) {

  'use strict';

  /*
    activecontexts is a two level map
    Map(object -> Map(context -> true))
    The second map is simply used for efficient set lookup (has)
  */
  var activecontexts = new WeakMap();

oconnore

Hey Ryan,

I thought this would be the easiest way to answer you in 140+ characters.

My first point is that the entropy of a random string is not defined by the number of possible characters. If you were to randomly pick a number between 1 and 100, and I randomly picked seven 1's or 0's, my string would have more entropy

log(100,2) = 6.64
and
2^7 > 2^6.64

oconnore

class RawStorable a where
  storeMemRaw ::
    (AllocationContext b z t r, AllocationType t r) =>
    a -> b -> t -> IO (Ptr a)
  loadMemRaw :: Ptr a -> IO a

instance RawStorable Int where
  storeMemRaw el ctx typ = storeMemRaw (WrapStorable el) ctx typ >>= return . castPtr
  loadMemRaw ptr = loadMemRaw (castPtr ptr) >>= return . unwrap

oconnore

{-# LANGUAGE OverloadedStrings, ScopedTypeVariables #-}
{-# LANGUAGE DeriveDataTypeable #-}
 
module Main where

import Control.Exception
import Control.Failure
import Control.Applicative
import Control.Monad
import Control.Monad.Trans

oconnore

import Control.Concurrent
import Control.Exception
import Control.Monad
import System.IO
import Text.Printf
import Data.Maybe
import Data.Map as Map
import Data.Set as Set
import Data.String

oconnore

#!/bin/sh
set -e 

SWAPNAME="swapfile"
SWAPFILE="/var/swapfile.crypt"

MEMORY=`cat /proc/meminfo | grep MemTotal | sel -c 2`
# Next power of 2 Megabytes above reported memory
MEGABYTES=$(perl -e "use POSIX; print 2**ceil(log(ceil($MEMORY/(2**10)))/log(2))")

oconnore

var b32 = require('thirty-two');
var crypto = require('crypto');


module.exports.randomStr = function(bits) {
  bits = (typeof bits === 'number' && bits >= 80) ? bits : 128;
  var randb32 = b32.encode(
    crypto.randomBytes(Math.ceil(bits / 8))).toString('utf8');
  var idx = randb32.indexOf('=');
  return randb32.substr(0, idx > 0 ? idx : randb32.length);

oconnore

// also no control characters or spaces...

var crypto = require('crypto');
var b32 = require('thirty-two');

function randomStr(n) {
  var randb32 = b32.encode(crypto.randomBytes(n)).toString('utf8');
  var idx = randb32.indexOf('=');
  return randb32.substr(0, idx > 0 ? idx : randb32.length);
}

oconnore

var fs = require('fs');
function chmodFile(cb) {
  fs.chmod('./hello', 0644, function(err) {
    cb(err);
  });
}
function statFile(cb) {
  fs.stat('./hello', function(err, st) {
    if ((st.mode & 07777) !== 0644) {
      console.log('chmodding after stat', st.mode);

oconnore

#!/bin/sh
set -e 

SWAPNAME="swapfile"
SWAPFILE="/var/swapfile.crypt"

MEMORY=`cat /proc/meminfo | grep MemTotal | sel -c 2`
# Next power of 2 Megabytes above reported memory
MEGABYTES=$(perl -e "use POSIX; print 2**ceil(log(ceil($MEMORY/(2**10)))/log(2))")