# frozen_string_literal: true

##
# This file is part of WhatWeb and may be subject to
# redistribution and commercial restrictions. Please see the WhatWeb
# web site for more information on licensing and terms of use.
# http://www.morningstarsecurity.com/research/whatweb
##
# Version 0.2 # 2011-03-19 #
# Added local file path aggressive match
##
WhatWeb::Plugin.define "ViewVC" do
  @author = "Brendan Coles <bcoles@gmail.com>" # 2011-03-18
  @version = "0.2"
  @description = "ViewVC (formerly known as ViewCVS) is a browser interface for CVS and Subversion version control repositories. It generates templatized HTML to present navigable directory, revision, and change log listings. It can display specific versions of files as well as diffs between those versions."
  @website = "http://viewvc.tigris.org/"

  # Google results as at 2011-03-19 #
  # 288 for "Powered by viewvc"
  # 107 for inurl:viewvc.cgi ext:cgi
  #  99 for inurl:viewcvs.cgi ext:cgi

  # Matches #
  @matches = [

    # Title
    { text: '<title>ViewVC Repository Listing</title>' },

    # HTML Comment
    { text: '<!-- ViewVC :: http://www.viewvc.org/ -->' },
    { text: '<!-- ViewCVS -- http://viewcvs.sourceforge.net/' },

    # Version Detection # Powered by link
    { version: /<td>Powered by <a href="http:\/\/viewvc.tigris.org\/">ViewVC ([^<]+)<\/a><\/td>/ },
    { version: /Powered by <a href="http:\/\/viewcvs.sourceforge.net\/">ViewCVS ([^<]+)<\/a><\/td>/ },

    # Version Detection # Meta Generator
    { version: /<meta name="generator" content="ViewVC ([^"]+)" \/>/ },
    { version: /<meta name="generator" content="ViewCVS ([^"]+)">/ },

  ]

  # Aggressive #
  def aggressive(target)
    m = []

    # Local File Path Detection # Find application base path
    if /^[^\n]*\/(viewcvs|viewvc)/i.match?(target.uri.path)

      # Generate Random File Name
      random_fname = rand(36**6).to_s(36)

      # Detect /viewcv/ or /viewcvs/
      target_url = target.uri.path.scan(/^([^\n]*\/viewvc\/|[^\n]*\/viewcvs\/)/i).flatten.first + "/*docroot*/" + random_fname if target.uri.path =~ /^([^\n]*\/viewvc\/|[^\n]*\/viewcvs\/)/i

      # Detect /viewvc or /viewcvs
      target_url = target.uri.path.scan(/^([^\n]*\/viewvc$|^[^\n]*\/viewcvs$)/i).flatten.first + "/*docroot*/" + random_fname if target.uri.path =~ /^([^\n]*\/viewvc$|[^\n]*\/viewcvs$)/i

      # Detect /viewvc.cgi or /viewcvs.cgi
      target_url = target.uri.path.scan(/^([^\n]*\/viewvc\.cgi|[^\n]*\/viewcvs\.cgi)/i).flatten.first + "/*docroot*/" + random_fname if target.uri.path =~ /^([^\n]*\/viewvc\.cgi|[^\n]*\/viewcvs\.cgi)/i

      # Open application base url + "/*docroot*/" + random filename
      unless target_url.nil?

        url = URI.join(target.uri.to_s, target_url).to_s
        new_target = WhatWeb::Target.new(url)

        # Extract local file path
        m << { filepath: new_target.body.scan(/\(\[Errno 2\] No such file or directory: '([^']+)#{random_fname}'\)/).flatten } if body =~ /\(\[Errno 2\] No such file or directory: '([^']+)#{random_fname}'\)/

      end

    end

    # Return aggressive matches
    m
  end
end