Contents

# Copyright (c) 2021 Contrast Security, Inc. See https://www.contrastsecurity.com/enduser-terms-0317a for more details.
# frozen_string_literal: true

require 'contrast/components/interface'
# This module is used to find funchook library and determine availability
module Funchook
  include Contrast::Components::Interface
  access_component :logging
  attr_accessor :path

  # Possible platform library files
  ACCEPTABLE_FILES = %w[libfunchook.dylib libfunchook.so].cs__freeze

  # Top level agent directories that should have the funchook libraries
  SEARCH_DIRS = [
    File.join('ext'),
    File.join('shared_libraries'),
    File.join('funchook', 'src')
  ].cs__freeze

  AGENT_ROOT = File.join(__dir__, '..', '..', '..')

  def self.resolve_path!
    actual_path_segments = SEARCH_DIRS.product(ACCEPTABLE_FILES).find do |potential_funchook_path|
      load_path = absolute_path(potential_funchook_path)
      File.exist?(load_path)
    end

    if actual_path_segments.nil?
      logger.warn('Unable to find funchook')
    else
      @path = absolute_path(actual_path_segments)
      logger.info('Funchook found', path: @path)
    end
    @path
  end

  def self.absolute_path path_array
    File.absolute_path(File.join(AGENT_ROOT, *path_array))
  end

  def self.available?
    @_available ||= !!resolve_path!
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
contrast-agent-4.6.0	lib/contrast/funchook/funchook.rb
contrast-agent-4.5.0	lib/contrast/funchook/funchook.rb