Class: PxModule::PerimeterxCookieValidator

Inherits:
Object
  • Object
show all
Defined in:
lib/perimeterx/internal/validators/perimeter_x_cookie_validator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(px_config) ⇒ PerimeterxCookieValidator

Returns a new instance of PerimeterxCookieValidator.



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# File 'lib/perimeterx/internal/validators/perimeter_x_cookie_validator.rb', line 13

def initialize(px_config)
  @px_config = px_config
  @logger = px_config[:logger]
end

Instance Attribute Details

#px_config ⇒ Object

Returns the value of attribute px_config.



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# File 'lib/perimeterx/internal/validators/perimeter_x_cookie_validator.rb', line 11

def px_config
  @px_config
end

Instance Method Details

#verify(px_ctx) ⇒ Object 



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# File 'lib/perimeterx/internal/validators/perimeter_x_cookie_validator.rb', line 19

def verify(px_ctx)
  begin
    if px_ctx.context[:px_cookie].empty?
      @logger.warn("PerimeterxCookieValidator:[verify]: no cookie")
      px_ctx.context[:s2s_call_reason] = PxModule::NO_COOKIE
      return false, px_ctx
    end
    
    # Deserialize cookie start
    cookie = PerimeterxPayload.px_cookie_factory(px_ctx, @px_config)
    if !cookie.deserialize()
      @logger.warn("PerimeterxCookieValidator:[verify]: invalid cookie")
      px_ctx.context[:px_orig_cookie] = px_ctx.get_px_cookie
      px_ctx.context[:s2s_call_reason] =  PxModule::COOKIE_DECRYPTION_FAILED
      return false, px_ctx
    end
    px_ctx.context[:decoded_cookie] = cookie.decoded_cookie
    px_ctx.context[:score] = cookie.cookie_score()
    px_ctx.context[:uuid] = cookie.decoded_cookie[:u]
    px_ctx.context[:block_action] = px_ctx.set_block_action_type(cookie.cookie_block_action())
    px_ctx.context[:cookie_hmac] = cookie.cookie_hmac()

    vid = cookie.decoded_cookie[:v]
    if vid.is_a?(String) && vid.match(PxModule::VID_REGEX)
      px_ctx.context[:vid_source] = "risk_cookie"
      px_ctx.context[:vid] = vid
    end

    if cookie.expired?
      @logger.warn("PerimeterxCookieValidator:[verify]: cookie expired")
      px_ctx.context[:s2s_call_reason] = PxModule::EXPIRED_COOKIE
      return false, px_ctx
    end

    if cookie.high_score?
      @logger.warn("PerimeterxCookieValidator:[verify]: cookie high score")
      px_ctx.context[:blocking_reason] = 'cookie_high_score'
      return true, px_ctx
    end

    if !cookie.secured?
      @logger.warn("PerimeterxCookieValidator:[verify]: cookie invalid hmac")
      px_ctx.context[:s2s_call_reason] = PxModule:: COOKIE_VALIDATION_FAILED
      return false, px_ctx
    end

    if px_ctx.context[:sensitive_route]
      @logger.info("PerimeterxCookieValidator:[verify]: cookie was verified but route is sensitive")
      px_ctx.context[:s2s_call_reason] = PxModule::SENSITIVE_ROUTE
      return false, px_ctx
    end

    @logger.debug("PerimeterxCookieValidator:[verify]: cookie validation passed succesfully")

    px_ctx.context[:pass_reason] = 'cookie'
    return true, px_ctx
  rescue Exception => e
    @logger.error("PerimeterxCookieValidator:[verify]: exception while verifying cookie => #{e.message}")
    px_ctx.context[:px_orig_cookie] = px_ctx.context[:px_cookie]
    px_ctx.context[:s2s_call_reason] = PxModule::COOKIE_DECRYPTION_FAILED
    return false, px_ctx
  end
end