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# -*- coding: binary -*-
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require 'rails'
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module Msf
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  module Simple
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    module Framework
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      module ModulePaths
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        attr_accessor :configured_module_paths
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        attr_accessor :module_paths_inited
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        # Initialize the module paths
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        #
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        # @return [void]
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        def init_module_paths(opts = {})
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          if @module_paths_inited
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            raise 'Module paths already initialized.  To add more module paths call `modules.add_module_path`'
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          end
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          @configured_module_paths = []
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          extract_engine_module_paths(Rails.application).each do |path|
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            @configured_module_paths << path
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          end
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          if Msf::Config.user_module_directory
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            @configured_module_paths << Msf::Config.user_module_directory
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          end
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          ::Rails::Engine.subclasses.map(&:instance).each do |engine|
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            extract_engine_module_paths(engine).each do |path|
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              @configured_module_paths << path
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            end
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          end
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          # If additional module paths have been defined globally, then load them.
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          # They should be separated by semi-colons.
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          self.datastore['MsfModulePaths'].to_s.split(";").each do |path|
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            @configured_module_paths << path
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          end
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          # If the caller had additional paths to search, load them.
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          # They should be separated by semi-colons.
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          opts.delete(:module_paths).to_s.split(";").each do |path|
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            @configured_module_paths << path
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          end
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          # Remove any duplicate paths
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          @configured_module_paths.uniq!
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          # return early if we're deferring module loading
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          return if opts.delete(:defer_module_loads)
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          # Update the module cache from the database
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          self.modules.refresh_cache_from_database(@configured_module_paths)
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          # Load each of the module paths
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          @configured_module_paths.each do |path|
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            self.modules.add_module_path(path, opts, recalculate: false)
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          end
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          @module_paths_inited = true
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        end
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        private
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        # Extract directories `engine.paths['modules']` from `engine`.
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        #
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        # @param engine [Rails::Engine] a rails engine or application
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        # @return [Array<String>] The list of module paths to load
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        def extract_engine_module_paths(engine)
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          engine.paths['modules'] ? engine.paths['modules'].existent_directories : []
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        end
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      end
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    end
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  end
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end
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