DZone Snippets: mac code

Mac Wifi MAC spoofing

markpercival (Mark Percival) — Mon, 21 Apr 2008 18:03:44 GMT

A certain unnamed national provider of bagels has seen fit to limit free wifi during lunch hours. They do this based on MAC address. I never liked my MAC address anyways.

Update -- My previous code had two considerable bugs when I posted it. Caius Durling (http://caius.name/) made a considerable improvement with his own script. I've deleted my old code and just placed his here.



#!/usr/bin/env ruby

# 

# USAGE: Turn off wireless, run this, then turn it back on.

# ./random_mac.rb  # =>  random mac address

# ./random_mac.rb --reset # =>  original mac address



# Set this to your Original MAC Address

original_mac = ""



# Just a little warning

puts "Warning: You haven't set your original Mac Address in the script yet." if original_mac.empty?



# Generates a 2 digit code

def generate_pair

  a = rand(255).to_s(16)

  return (a.length < 2 ? generate_pair : a)

end



# Sets the mac address to the passed value

def set_mac_address( mac_addr )

  raise "MacAddressFormatError" if mac_addr.scan(/^(?:[\w\d]{2}\:){5}[\w\d]{2}$/).empty?

  puts "Old MAC address: #{`ifconfig en1 | grep ether`.match(/ether\s(.+)/)[1]}"

  `sudo ifconfig en1 ether #{mac_addr}`

  puts "New MAC address: #{`ifconfig en1 | grep ether`.match(/ether\s(.+)/)[1]}"

end







case ARGV.first

when "--reset"

  # Try to reset to old mac address

  if original_mac.empty?

    puts "ERROR - You need to set the old mac address in the script"

    exit(1)

  end

  puts "Resetting to old mac address"

  set_mac_address( original_mac )

  

when nil

  # Generate & set a random mac address

  random_mac = (0..5).map { |x| generate_pair }.join(":")

  set_mac_address( random_mac )

  

when "--help"

  # Show some help I guess

  puts [

    "USAGE: Turn off wireless, run this, then turn it back on.",

    "./random_mac.rb  # =>  random mac address",

    "./random_mac.rb --reset # =>  original mac address"

    ].join("\n")

  

else

  # Who knows?

  puts "Unknown Flag, try --help"

  exit(2)

end

Kill the cornball dock in Leopard

sikelianos (Zeke Sikelianos) — Mon, 29 Oct 2007 23:54:46 GMT



defaults write com.apple.dock no-glass -boolean YES

killall Dock

Mac Menu effect js

Gne (Paolo) — Tue, 25 Sep 2007 10:48:19 GMT

Here the html code

JS

and the javascript, require prototypejs



var maxDist = 0;



function mousemove(e) {

	var eX = Position.page($('menuitems'))[0];

	var eY = Position.page($('menuitems'))[1];

	var eWidth = parseInt($('menuitems').getStyle('width'));

	var pX = Event.pointerX(e);

	var pY = Event.pointerY(e);

	var imgs = $('menuitems').immediateDescendants();

	for (var i = 0; i < imgs.length; i++) {

		var distFromMouse = calcDistFromMouse(pX, pY, imgs[i].firstDescendant());

		if (distFromMouse < 45) {

			var newSize = parseInt(distFromMouse * (-0.4) + 50);

			imgs[i].firstDescendant().setStyle({ width: newSize, height: newSize});

		} else {

			imgs[i].firstDescendant().setStyle({ width: 20, height: 20});

		}

	}

}



function resetScaling () {

	var imgs = $('menuitems').immediateDescendants();

	for (var i = 0; i < imgs.length; i++) {

		var newSize = 20;

		imgs[i].setStyle({ width: newSize, height: newSize});

	}

}



function calcDistFromMouse(mX, mY, elem) {

	var elemCenterX = parseInt(Position.page(elem)[0]) + (parseInt(elem.getStyle('width')) / 2);

	var elemCenterY = parseInt(Position.page(elem)[1]) + (parseInt(elem.getStyle('height')) / 2);

	var distance = parseInt(Math.sqrt((elemCenterX - mX) * (elemCenterX - mX) + (elemCenterY - mY) * (elemCenterY - mY)));

	return distance;

}



function checkMousePos(pX, pY, eX, eY, eWidth ){

	if (pY - eY > 200)

		return false;

	if (pX > eX) {

		if (pX - (eX + eWidth) > 200)

			return false;

	} else {

		if (eX - pX > 200)

			return false;

	}

	return true;

}



Event.observe(window,'load', function() {

  Event.observe(document,'mousemove',mousemove, false);

});

restart appache

counter202 (jensen) — Sat, 12 May 2007 19:35:56 GMT

// description of your code here

sudo apachectl restart

..

Building curb under Mac OS X

willcodeforfoo () — Sat, 06 Jan 2007 00:44:55 GMT

Had a bit of a problem getting curb to work in OS X, but if you have the curl port installed, its easy:

sudo port install curl

cd src

curl -O http://rubyforge.iasi.roedu.net/files/curb/curb-0.1.0.tar.gz

tar -zxvf curb-0.1.0.tar.gz

cd curb-0.1.0.tar.gz

ruby extconf.rb --with-curl-lib=/opt/local/lib/ --with-curl-include=/opt/local/include/

ruby tests/alltests.rb

sudo make install

Configure command key as alt-gr key in a Apple Powerbook with Ubuntu GNU/Linux

dirtyaffairs (Dirty Affairs) — Sun, 03 Dec 2006 16:20:55 GMT

Set this Option in "InputDevice" section at your /etc/X11/xorg.conf



Option          "XkbOptions"    "lv3:lwin_switch"

Ruby HMAC verifier

exabrial (Jon) — Sun, 05 Nov 2006 01:54:20 GMT

// Ruby script to verify the HMAC of a file or string.



#!/usr/bin/env ruby

#

#  Created by Jon (exabrial+hmacruby@gmail.com) on 2006-11-04.

#  Copyright (c) 2006. All rights reserved.

#  Released under MIT License



require 'openssl'

require "getopt/std"

include OpenSSL

include Digest



def printhelp

  help=<Purpose: Provides HMAC-SHA1 of a file or string. Text passwords are SHA1 hashed.

Usage: hmac.rb ["string to digest"] [-f (pathtofile)] [-k (pathtokeyfile)]

Options:

  -f (pathtofile) digests a file instead of a string

  -k (pathtokeyfile) does not prompt for key and uses the specified file as a key instead.

end

  puts help

  exit

end



if ARGV.size < 1

  printhelp

elsif ARGV.size==1

  @plaintext=ARGV.shift

else

  begin

    opt = Getopt::Std.getopts("f:k:")

  rescue Getopt::StdError

    printhelp

  end

  

  if opt["f"]

    @plaintext=File.read(opt["f"])

  end

  if opt["k"]

    @key=File.read(opt["k"])

  end

  

  printhelp if (!@plaintext&&!@key)

end



def getkey

  return @key if @key

  print "Please type your key then push enter:"

  return SHA1.new(gets()).to_s

end



def main

  hmacd=HMAC.new(getkey(), SHA1.new)

  hmacd.update(@plaintext)

  puts hmacd.to_s

end



main

Use Launchd to run Rsnapshot daily

SimonDorfman (Simon Dorfman) — Sat, 15 Apr 2006 20:42:57 GMT

// run rsnapshot daily at 3am











        Label

        local.my-mac.rsnapshot-daily

        ProgramArguments

        

                /opt/local/bin/rsnapshot

                daily

        

        StartCalendarInterval

        

                Hour

                3

Restart apache on Mac OS X

jnunemaker () — Mon, 10 Apr 2006 17:36:32 GMT



sudo apachectl restart

Change iChat status from terminal.app

jnunemaker () — Mon, 10 Apr 2006 17:27:30 GMT



osascript ichatloc.scpt "This is a test"