#!/usr/bin/env ruby
require 'optparse'
require 'set'

$:.unshift "#{File.expand_path(File.dirname(__FILE__))}/../lib"

require 'version'
require 'brakeman'

trap("INT") do
  $stderr.puts "\nInterrupted - exiting."
  exit!
end

#Parse command line options
options = {}

OptionParser.new do |opts|
  opts.banner = "Usage: brakeman [options] rails/root/path"
 
  opts.on "-n", "--no-threads", "Run checks sequentially" do
    options[:parallel_checks] = false
  end

  opts.on "-p", "--path PATH", "Specify path to Rails application" do |path|
    options[:app_path] = File.expand_path path
  end

  opts.on "-q", "--quiet", "Suppress informational messages" do
    options[:quiet] = true
    $VERBOSE = nil
  end

  opts.on "-3", "--rails3", "[Experimental] Rails 3 support" do
    options[:rails3] = true
  end

  opts.separator ""
  opts.separator "Scanning options:"

  opts.on "-a", "--assume-routes", "Assume all controller methods are actions" do
    options[:assume_all_routes] = true
  end

  opts.on "--ignore-model-output", "Consider model attributes XSS-safe" do
    options[:ignore_model_output] = true
  end

  opts.on "-e", "--escape-html", "Escape HTML by default" do
    options[:escape_html] = true
  end

  opts.on "-r", "--report-direct", "Only report direct use of untrusted data" do |option|
    options[:check_arguments] = !option
  end

  opts.on "-s", "--safe-methods meth1,meth2,etc", Array, "Consider the specified methods safe" do |methods|
    options[:safe_methods] ||= Set.new
    options[:safe_methods].merge methods.map {|e| e.to_sym }
  end

  opts.on "-t", "--test Check1,Check2,etc", Array, "Only run the specified checks" do |checks|
    checks.each_with_index do |s, index|
      if s[0,5] != "Check"
        checks[index] = "Check" << s
      end
    end

    options[:run_checks] ||= Set.new
    options[:run_checks].merge checks
  end

  opts.on "-x", "--except Check1,Check2,etc", Array, "Skip the specified checks" do |skip|
    skip.each do |s|
      if s[0,5] != "Check"
        s = "Check" << s
      end

      options[:skip_checks] ||= Set.new
      options[:skip_checks] << s
    end
  end

  opts.separator ""
  opts.separator "Output options:"

  opts.on "-d", "--debug", "Lots of output" do
    options[:debug] = true 
  end

  opts.on "-f", 
    "--format TYPE", 
    [:pdf, :text, :html, :csv, :tabs], 
    "Specify output format. Default is text" do |type|
    
    type = "s" if type == :text
    options[:output_format] = ("to_" << type.to_s).to_sym
  end

  opts.on "-l", "--[no]-combine-locations", "Combine warning locations (Default)" do |combine|
    options[:combine_locations] = combine
  end

  opts.on "-m", "--routes", "Report controller information" do
    options[:report_routes] = true
  end

  opts.on "--message-limit LENGTH", "Limit message length in HTML report" do |limit|
    options[:message_limit] = limit.to_i
  end

  opts.on "-o", "--output FILE", "Specify file for output. Defaults to stdout" do |file|
    options[:output_file] = file
  end

  opts.on "-w", 
    "--confidence-level LEVEL", 
    ["1", "2", "3"], 
    "Set minimal confidence level (1 - 3). Default: 1" do |level|

    options[:min_confidence] =  3 - level.to_i
  end

  opts.separator ""
  opts.separator "Configuration files:"

  opts.on "-c", "--config-file FILE", "Use specified configuration file" do |file|
    options[:config_file] = File.expand_path(file)
  end

  opts.on "-C", "--create-config [FILE]", "Output configuration file based on options" do |file|
    if file
      options[:create_config] = file
    else
      options[:create_config] = true
    end
  end

  opts.separator ""

  opts.on "-k", "--checks", "List all available vulnerability checks" do
    options[:list_checks] = true
  end

  opts.on_tail "-h", "--help", "Display this message" do
    puts opts
    exit
  end
end.parse!(ARGV)

Brakeman.run options