Invalid saml requests will no longet cause exceptions

[amirhajimirsadeghi]

@zendesk/secdev

Description

Invalid Logout Requests would throw exceptions, fixed so that it responds with nil now

Risk

None: Just added a layer of protection where Exceptions were being thrown

[amirhajimirsadeghi]

@kintner fixed, what do you think?

[kintner]

Just a small style nit:

def self.inflate(data)
   inflater  = Zlib::Inflate.new(-Zlib::MAX_WBITS)
   decoded = inflater.inflate(data)
   inflater.finish
   inflater.close
   decoded
rescue Zlib::BufError, Zlib::DataError
  nil
end

[amirhajimirsadeghi]

@kintner 💇