Class: SelfSDK::Operation

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(operation) ⇒ Operation

Returns a new instance of Operation.

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# File 'lib/signature_graph.rb', line 17

def initialize(operation)
  @jws = operation

  payload = Base64.urlsafe_decode64(@jws[:payload])
  header = Base64.urlsafe_decode64(@jws[:protected])

  op = JSON.parse(payload, symbolize_names: true)
  hdr = JSON.parse(header, symbolize_names: true)

  @sequence = op[:sequence]
  @previous = op[:previous]
  @timestamp = op[:timestamp]
  @version = op[:version]
  @actions = op[:actions]
  @signing_key = hdr[:kid]

  validate!
end

Instance Attribute Details

#actions ⇒ Object (readonly)

Returns the value of attribute actions.


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# File 'lib/signature_graph.rb', line 15

def actions
  @actions
end

#jws ⇒ Object (readonly)

Returns the value of attribute jws.


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# File 'lib/signature_graph.rb', line 15

def jws
  @jws
end

#previous ⇒ Object (readonly)

Returns the value of attribute previous.


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# File 'lib/signature_graph.rb', line 15

def previous
  @previous
end

#sequence ⇒ Object (readonly)

Returns the value of attribute sequence.


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# File 'lib/signature_graph.rb', line 15

def sequence
  @sequence
end

#signing_key ⇒ Object (readonly)

Returns the value of attribute signing_key.


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# File 'lib/signature_graph.rb', line 15

def signing_key
  @signing_key
end

#timestamp ⇒ Object (readonly)

Returns the value of attribute timestamp.


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# File 'lib/signature_graph.rb', line 15

def timestamp
  @timestamp
end

Instance Method Details

#revokes(kid) ⇒ Object

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# File 'lib/signature_graph.rb', line 46

def revokes(kid)
  @actions.each do |action|
    if action[:kid] == kid && action[:action] == ACTION_REVOKE
      return true
    end
  end
  return false
end

#validate! ⇒ Object

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# File 'lib/signature_graph.rb', line 36

def validate!
  raise "unknown operation version" if @version != "1.0.0"
  raise "invalid operation sequence" if @sequence < 0
  raise "operation does not specify a previous signature" if @previous.nil?
  raise "invalid operation timestamp" if @timestamp < 1
  raise "operation does not specify any actions" if @actions.nil?
  raise "operation does not specify any actions" if @actions.length < 1
  raise "operation does not specify an identifier for the signing key" if @signing_key.nil?
end