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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Encoder
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  Rank = GreatRanking
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  def initialize
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    super(
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      'Name' => 'PHP Minify Encoder',
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      'Description' => %q{
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        This encoder minifies a PHP payload by removing leasing spaces, trailing
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        new lines, comments, ...
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      },
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      'Author' => 'Julien Voisin',
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      'License' => BSD_LICENSE,
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      'Arch' => ARCH_PHP)
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  end
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  def encode_block(_, buf)
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    # Remove comments
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    buf.gsub!(/^\s*#.*$/, '')
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    # Remove spaces after keywords
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    buf.gsub!(/^\s*(if|else|elsif|while|for|foreach)\s*\(/, '\1(')
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    # Remove spaces before block opening
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    buf.gsub!(/\s*{$/, '{')
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    # Remove empty lines
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    buf.squeeze!("\n")
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    # Remove leading/trailing spaces
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    buf.gsub!(/^[ \t]+/, '')
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    # Remove new lines
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    buf.gsub!(/([;{}])\n/, '\1')
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    return buf
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  end
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end
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