Class: Nexmo::Rack::VerifySignature

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

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ VerifySignature

Returns a new instance of VerifySignature.



5
6
7
8
9
10
11
 
# File 'lib/nexmo_rack/verify_signature.rb', line 5

def initialize(app)
  @app = app
  @nexmo = Nexmo::Client.new(
    signature_secret: signature_secret,
    signature_method: signature_method
  )
end

Instance Method Details

#call(env) ⇒ Object 



13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
# File 'lib/nexmo_rack/verify_signature.rb', line 13

def call(env)
  req = ::Rack::Request.new(env)

  # Duplicate the request params in case nexmo_client.check() modifies them
  params = req.params.dup

  # If there is no `sig` field, ignore this middleware unless we explicitly
  # require it to be present
  unless ENV['NEXMO_SIGNATURE_REQUIRED']
    return @app.call(env) unless req.params['sig']
  end

  # Otherwise calculate the signature and check that it matches
  if req.params['sig'] && @nexmo.signature.check(params)
    @app.call(env)
  else
    [403, {}, ['']]
  end
end