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require 'rouge'
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# Custom highlighting support for Metasploit's prompt
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# https://rouge-ruby.github.io/docs/file.LexerDevelopment.html
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module Rouge
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  # Custom tokens specific to Msf, as the inbuilt lexer tokens can't capture
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  # the detail required for Msf's print_warning/print_good/etc calls.
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  module Tokens
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    def self.token(name, shortname, &b)
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      tok = Token.make_token(name, shortname, &b)
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      const_set(name, tok)
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    end
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    # The 'shortname' is the class used when generating the HTML. It is intentionally
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    # short to reduce HTML size.
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    # https://github.com/rouge-ruby/rouge/blob/a4ed658d2778a3e2d3e68873f7221b91149a2ed4/lib/rouge/token.rb#L69
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    SHORTNAME = 'z'
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    token :Msf, SHORTNAME do
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      # prompt - msf / msf5 / msf6 / meterpreter
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      token :Prompt, "#{SHORTNAME}p"
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      # [-]
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      token :Error, "#{SHORTNAME}e"
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      # [+]
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      token :Good, "#{SHORTNAME}g"
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      # [*]
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      token :Status, "#{SHORTNAME}s"
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      # [!]
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      token :Warning, "#{SHORTNAME}w"
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    end
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  end
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  module Lexers
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    class MetasploitConsoleLanguage < Rouge::RegexLexer
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      title 'msf'
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      tag 'msf'
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      desc 'Metasploit console highlighter'
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      filenames []
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      mimetypes []
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      def self.keywords
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        @keywords ||= Set.new %w()
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      end
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      state :whitespace do
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        rule %r/\s+/, Text
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      end
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      state :root do
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        mixin :whitespace
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        # Match msf, msf5, msf6, meterpreter
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        rule %r{^(msf\d?|meterpreter)}, Tokens::Msf::Prompt, :msf_prompt
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        rule %r{^\[-\]}, Tokens::Msf::Error
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        rule %r{^\[\+\]}, Tokens::Msf::Good
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        rule %r{^\[\*\]}, Tokens::Msf::Status
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        rule %r{^\[\!\]}, Tokens::Msf::Warning
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        rule %r{.+}, Text
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      end
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      # State for highlighting the prompt such as
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      # msf6 auxiliary(admin/dcerpc/cve_2022_26923_certifried) >
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      state :msf_prompt do
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        mixin :whitespace
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        rule %r{exploit|payload|auxiliary|encoder|evasion|post|nop}, Text
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        rule %r{\(}, Punctuation
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        rule %r{\)}, Punctuation
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        rule %r{[\w/]+}, Keyword::Constant
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        rule %r{>}, Punctuation, :pop!
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      end
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    end
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  end
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end
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