Class: Stream::Signer

Inherits:
Object
  • Object
show all
Defined in:
lib/stream/signer.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(key) ⇒ Signer

Returns a new instance of Signer.



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# File 'lib/stream/signer.rb', line 8

def initialize(key)
  @key = key.to_s
  @sha1 = OpenSSL::Digest.new('sha1')
end

Class Method Details

.create_jwt_token(resource, action, api_secret, feed_id = nil, user_id = nil) ⇒ Object 



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# File 'lib/stream/signer.rb', line 27

def self.create_jwt_token(resource, action, api_secret, feed_id = nil, user_id = nil)
  payload = {
      resource: resource,
      action: action
  }
  payload['feed_id'] = feed_id if feed_id
  payload['user_id'] = user_id if user_id

  JWT.encode(payload, api_secret, 'HS256')
end

Instance Method Details

#sign(feed_slug, user_id) ⇒ Object 



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# File 'lib/stream/signer.rb', line 23

def sign(feed_slug, user_id)
  sign_message("#{feed_slug}#{user_id}")
end

#sign_message(message) ⇒ Object 



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# File 'lib/stream/signer.rb', line 17

def sign_message(message)
  key = Digest::SHA1.digest @key.to_s
  token = Base64.strict_encode64(OpenSSL::HMAC.digest(@sha1, key, message))
  urlsafe_encodeb64(token)
end

#urlsafe_encodeb64(value) ⇒ Object 



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# File 'lib/stream/signer.rb', line 13

def urlsafe_encodeb64(value)
  value.tr('+', '-').tr('/', '_').gsub(/^=+/, '').gsub(/=+$/, '')
end