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Brakeman::Rails3ConfigProcessor

Processes configuration. Results are put in tracker.config.

Configuration of Rails via Rails::Initializer are stored in tracker.config. 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 will still be Sexps.

Constants

RAILS_CONFIG

Public Class Methods

new(*args) click to toggle source
# File lib/brakeman/processors/lib/rails3_config_processor.rb, line 18
def initialize *args
  super
  @tracker.config[:rails] ||= {}
  @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 102
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 80
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 53
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 = get_rails_config exp
    level = @tracker.config[:rails]
    options[0..-2].each do |o|
      level[o] ||= {}
      level = level[o]
    end

    level[options.last] = 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 42
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) click to toggle source

Use this method to process configuration file

# File lib/brakeman/processors/lib/rails3_config_processor.rb, line 25
def process_config src
  res = Brakeman::AliasProcessor.new(@tracker).process_safely(src)
  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 31
def process_iter exp
  if node_type?(exp.block_call.target, :colon2) and exp.block_call.method == :Application
    @inside_config = true
    process_all exp.body if sexp? exp.body
    @inside_config = false
  end

  exp
end

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