Class: GoogleJWT

Inherits:
Object
  • Object
show all
Defined in:
lib/google-jwt.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(claim_set, private_key, password, header = nil) ⇒ GoogleJWT

Returns a new instance of GoogleJWT.



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# File 'lib/google-jwt.rb', line 19

def initialize(claim_set, private_key, password, header = nil)
  # Symbolize the keys.
  self.claim_set = claim_set.inject({}){|item,(k,v)| item[k.to_sym] = v; item}

  # Remove unknown/invalid keys.
  self.claim_set = self.claim_set.delete_if {|k,v| ![:iss, :scope, :aud, :exp, :iat, :prn].include?(k)}

  # Make sure we have all the required keys.
  [:iss, :scope, :aud].each {|r| raise RuntimeError "Missing required claim key: #{r}" unless self.claim_set[r]}

  # Set defaults for create/expire time.
  self.claim_set[:exp] ||= Time.now.to_i + 3600
  self.claim_set[:iat] ||= Time.now.to_i

  # Make sure the header is clean and has required items.
  self.header ||= {:alg => "RS256", :typ => "JWT"}
  self.header = self.header.inject({}){|item,(k,v)| item[k.to_sym] = v; item}
  self.header = self.header.delete_if {|k,v| ![:alg, :typ].include?(k)}
  [:alg, :typ].each {|r| raise RuntimeError "Missing required header key: #{r}" unless self.header[r]}

  # Make sure we were passed the private key and password.
  raise RuntimeError "Missing required private key parameter." unless private_key
  raise RuntimeError "Missing required password parameter." unless password

  # Set the private key.
  self.private_key = key_from_pkcs12(private_key, password)
end

Instance Attribute Details

#claim_set ⇒ Object

Returns the value of attribute claim_set.



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# File 'lib/google-jwt.rb', line 18

def claim_set
  @claim_set
end

#header ⇒ Object

Returns the value of attribute header.



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# File 'lib/google-jwt.rb', line 18

def header
  @header
end

#private_key ⇒ Object

Returns the value of attribute private_key.



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# File 'lib/google-jwt.rb', line 18

def private_key
  @private_key
end

Instance Method Details

#jwt ⇒ Object 



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# File 'lib/google-jwt.rb', line 47

def jwt
  header = self.header.to_json.clean_base64_encode
  claim_set = self.claim_set.to_json.clean_base64_encode
  signature = "#{header}.#{claim_set}".sign(self.private_key).clean_base64_encode
  "#{header}.#{claim_set}.#{signature}"
end