Class: Brakeman::MethodInfo

Inherits:
Object
  • Object
show all
Includes:
Util
Defined in:
lib/brakeman/tracker/method_info.rb

Constant Summary

Constants included from Util

Util::ALL_COOKIES, Util::ALL_PARAMETERS, Util::COOKIES, Util::COOKIES_SEXP, Util::DIR_CONST, Util::LITERALS, Util::PARAMETERS, Util::PARAMS_SEXP, Util::PATH_PARAMETERS, Util::QUERY_PARAMETERS, Util::REQUEST_COOKIES, Util::REQUEST_ENV, Util::REQUEST_PARAMETERS, Util::REQUEST_PARAMS, Util::REQUEST_REQUEST_PARAMETERS, Util::SAFE_LITERAL, Util::SESSION, Util::SESSION_SEXP, Util::SIMPLE_LITERALS

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Util

#all_literals?, #array?, #block?, #call?, #camelize, #class_name, #constant?, #contains_class?, #cookies?, #dir_glob?, #false?, #hash?, #hash_access, #hash_insert, #hash_iterate, #hash_values, #integer?, #kwsplat?, #literal?, #make_call, #node_type?, #number?, #params?, #pluralize, #rails_version, #recurse_check?, #regexp?, #remove_kwsplat, #request_env?, #request_value?, #result?, #safe_literal, #safe_literal?, #safe_literal_target?, #set_env_defaults, #sexp?, #simple_literal?, #string?, #string_interp?, #symbol?, #template_path_to_name, #true?, #underscore

Constructor Details

#initialize(name, src, owner, file) ⇒ MethodInfo

Returns a new instance of MethodInfo.



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# File 'lib/brakeman/tracker/method_info.rb', line 9

def initialize name, src, owner, file
  @name = name
  @src = src
  @owner = owner
  @file = file
  @type = case src.node_type
          when :defn
            :instance
          when :defs
            :class
          else
            raise "Expected sexp type: #{src.node_type}"
          end

  @simple_method = nil
end

Instance Attribute Details

#file ⇒ Object (readonly)

Returns the value of attribute file.



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# File 'lib/brakeman/tracker/method_info.rb', line 7

def file
  @file
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/brakeman/tracker/method_info.rb', line 7

def name
  @name
end

#owner ⇒ Object (readonly)

Returns the value of attribute owner.



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# File 'lib/brakeman/tracker/method_info.rb', line 7

def owner
  @owner
end

#src ⇒ Object (readonly)

Returns the value of attribute src.



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# File 'lib/brakeman/tracker/method_info.rb', line 7

def src
  @src
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/brakeman/tracker/method_info.rb', line 7

def type
  @type
end

Instance Method Details

#[](attr) ⇒ Object

To support legacy code that expected a Hash



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# File 'lib/brakeman/tracker/method_info.rb', line 27

def [] attr
  self.send(attr)
end

#first_body ⇒ Object 



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# File 'lib/brakeman/tracker/method_info.rb', line 61

def first_body
  case @type
  when :class
    src[4]
  when :instance
    src[3]
  end
end

#return_value(env = nil) ⇒ Object 



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# File 'lib/brakeman/tracker/method_info.rb', line 53

def return_value env = nil
  if very_simple_method?
    return @return_value
  else
    nil
  end
end

#very_simple_method? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/brakeman/tracker/method_info.rb', line 31

def very_simple_method?
  return @simple_method == :very unless @simple_method.nil?

  # Very simple methods have one (simple) expression in the body and
  # no arguments
  if src.formal_args.length == 1 # no args
    if src.method_length == 1 # Single expression in body
      value = first_body # First expression in body

      if simple_literal? value or
          (array? value and all_literals? value) or
          (hash? value and all_literals? value, :hash)

        @return_value = value
        @simple_method = :very
      end
    end
  end

  @simple_method ||= false
end