sign.rb

require 'pathname'
require 'fileutils'

if ARGV.size < 3
  puts "Usage: ruby sign.rb App DeveloperId Provision"
  exit
end

puts "Working"

name = ARGV[0]
ipa = "#{name}.ipa"
app = "#{name}.app"
developer_id = ARGV[1]
provision = ARGV[2]

target_ipa = Pathname.new(File.dirname(__FILE__)).realpath + "#{name}_resigned.ipa"

if not File.exists? ipa
  puts "#{ipa} not found"
end

begin
  FileUtils.rmtree 'Payload'
  FileUtils.rmtree app
  
  puts `unzip #{ipa}`
  FileUtils.mv "Payload/#{app}", '.'

  puts `xcrun --sdk iphoneos PackageApplication -s "#{developer_id}" --embed "#{provision}" "#{app}" -o "#{target_ipa}"`

  FileUtils.rmtree 'Payload'
  FileUtils.rmtree app
rescue
  puts "Error, #{$!}"
end

great