Module: Dash

Extended by:
Dash
Included in:
Dash
Defined in:
lib/dash.rb,
lib/dash/version.rb

Constant Summary collapse

STRONG = 
'ABCDEFGHJKLMNPQRSTUVWabcdefghijkmnopqrstuvw0123456789+/-_*()[]{}'
WEAK = 
'ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
LENGTH = 
12
VERSION = 
"0.2.1"

Instance Method Summary collapse

Instance Method Details

#encode(s, c) ⇒ Object 



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# File 'lib/dash.rb', line 45

def encode(s,c)
  (t=s.unpack('C*').inject([0,'',0]){|a,v|a[0]==0?[2,a[1]+c[v>>2,1],v*16&48]:a[0]==2?[4,a[1]+c[v>>4|a[2],1],v*4&60]:[0,a[1]+c[v>>6|a[2],1]+c[v&63,1],0]})[1]+(t[0]==0?'':t[0]==2?c[t[2],1]+'==':c[t[2],1]+'=')
end

#encrypt(key) ⇒ Object 



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# File 'lib/dash.rb', line 49

def encrypt(key)
  Digest::SHA1.hexdigest key
end

#hash(args) ⇒ Object 



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# File 'lib/dash.rb', line 10

def hash(args)
  return unless parse_args(args)
  
  @key = encrypt @password
  @hash = encrypt "#{@key}#{@domain}"

  puts encode(@hash, @charset)[0,@length]
end

#parse_args(args) ⇒ Object 



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# File 'lib/dash.rb', line 19

def parse_args(args)
  opts = Slop.parse!(args) do
    banner "Usage: dash <domain> [options]"
    on :p, :password, 'Your master password', :argument => true
    on :w, :weak, 'Generate weak password with alphanumeric character set'
    on :l, :length, 'Length of generated password', :argument => true
  end
  
  @charset = opts.weak? ? WEAK : STRONG
  @length = opts.length? ? opts[:length].to_i : LENGTH
  
  unless password = opts[:password] || ENV['DASH_PASSWORD']
    puts opts.help
    return
  end
  
  unless domain = args.shift
    puts opts.help
    return
  end
  
  @password = password.strip
  @domain = domain.strip
  true 
end