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# -*- coding: binary -*-
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require 'rex/exploitation/jsobfu'
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module Msf
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  module Exploit::JSObfu
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    def initialize(info={})
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      super
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      register_advanced_options([
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        OptInt.new('JsObfuscate', [false, "Number of times to obfuscate JavaScript", 0]),
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        OptString.new('JsIdentifiers', [false, "Identifiers to preserve for JsObfu"])
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      ], Exploit::JSObfu)
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    end
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    #
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    # Returns an JSObfu object. A wrapper of ::Rex::Exploitation::JSObfu.new(js).obfuscate
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    #
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    # @param js [String] JavaScript code
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    # @param opts [Hash] obfuscation options
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    #    * :iterations [FixNum] Number of times to obfuscate
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    #    * :preserved_identifiers [Array] An array of identifiers to preserve during obfuscation
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    # @return [::Rex::Exploitation::JSObfu]
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    #
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    def js_obfuscate(js, opts={})
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      iterations = (opts[:iterations] || datastore['JsObfuscate']).to_i
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      identifiers = opts[:preserved_identifiers].blank? ? (datastore['JsIdentifiers'] || '').split(',') : opts[:preserved_identifiers]
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      obfu = ::Rex::Exploitation::JSObfu.new(js)
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      obfu_opts = {}
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      obfu_opts.merge!(iterations: iterations)
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      obfu_opts.merge!(preserved_identifiers: identifiers)
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      obfu.obfuscate(obfu_opts)
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      obfu
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    end
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  end
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end
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