class Brakeman::Rails3ConfigProcessor

Processes configuration. Results are put in tracker.config.

Configuration of Rails via Rails::Initializer are stored in tracker.config.rails. For example:

MyApp::Application.configure do
  config.active_record.whitelist_attributes = true
end

will be stored in

tracker.config.rails[:active_record][:whitelist_attributes]

Values for tracker.config.rails will still be Sexps.

Constants

RAILS_CONFIG

Public Class Methods

new(*args) click to toggle source
Calls superclass method Brakeman::BasicProcessor::new
# File lib/brakeman/processors/lib/rails3_config_processor.rb, line 21
def initialize *args
  super
  @inside_config = false
end

Public Instance Methods

get_rails_config(exp) click to toggle source

Returns an array of symbols for each 'level' in the config

config.action_controller.session_store = :cookie

becomes

[:action_controller, :session_store]
# File lib/brakeman/processors/lib/rails3_config_processor.rb, line 118
def get_rails_config exp
  if node_type? exp, :attrasgn
    attribute = exp.method.to_s[0..-2].to_sym
    get_rails_config(exp.target) << attribute
  elsif call? exp
    if exp.target == RAILS_CONFIG
      [exp.method]
    else
      get_rails_config(exp.target) << exp.method
    end
  else
    raise "WHAT"
  end
end
include_rails_config?(exp) click to toggle source

Check if an expression includes a call to set Rails config

# File lib/brakeman/processors/lib/rails3_config_processor.rb, line 96
def include_rails_config? exp
  target = exp.target
  if call? target
    if target.target == RAILS_CONFIG
      true
    else
      include_rails_config? target
    end
  elsif target == RAILS_CONFIG
    true
  else
    false
  end
end
process_attrasgn(exp) click to toggle source

Look for configuration settings

# File lib/brakeman/processors/lib/rails3_config_processor.rb, line 75
def process_attrasgn exp
  return exp unless @inside_config

  if exp.target == RAILS_CONFIG
    #Get rid of '=' at end
    attribute = exp.method.to_s[0..-2].to_sym
    if exp.args.length > 1
      #Multiple arguments?...not sure if this will ever happen
      @tracker.config.rails[attribute] = exp.args
    else
      @tracker.config.rails[attribute] = exp.first_arg
    end
  elsif include_rails_config? exp
    options_path = get_rails_config exp
    @tracker.config.set_rails_config(exp.first_arg, *options_path)
  end

  exp
end
process_call(exp) click to toggle source

Look for configuration settings that are just a call like

config.load_defaults 5.2
# File lib/brakeman/processors/lib/rails3_config_processor.rb, line 64
def process_call exp
  return exp unless @inside_config

  if exp.target == RAILS_CONFIG and exp.first_arg
    @tracker.config.rails[exp.method] = exp.first_arg
  end

  exp
end
process_class(exp) click to toggle source

Look for class Application < Rails::Application

# File lib/brakeman/processors/lib/rails3_config_processor.rb, line 50
def process_class exp
  if exp.class_name == :Application
    @inside_config = true
    process_all exp.body if sexp? exp.body
    @inside_config = false
  end

  exp
end
process_config(src, current_file) click to toggle source

Use this method to process configuration file

# File lib/brakeman/processors/lib/rails3_config_processor.rb, line 27
def process_config src, current_file
  @current_file = current_file
  res = Brakeman::AliasProcessor.new(@tracker).process_safely(src, nil, @current_file)
  process res
end
process_iter(exp) click to toggle source

Look for MyApp::Application.configure do … end

# File lib/brakeman/processors/lib/rails3_config_processor.rb, line 34
def process_iter exp
  call = exp.block_call

  if node_type?(call.target, :colon2) and
    call.target.rhs == :Application and
    call.method == :configure

    @inside_config = true
    process exp.block if sexp? exp.block
    @inside_config = false
  end

  exp
end