Class: Brakeman::Warning

Inherits:
Object show all
Defined in:
lib/brakeman/warning.rb

Overview

The Warning class stores information about warnings

Constant Summary

TEXT_CONFIDENCE =
[ "High", "Medium", "Weak" ]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Warning

options can be a result from Tracker#find_call. Otherwise, it can be nil.



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# File 'lib/brakeman/warning.rb', line 16

def initialize options = {}
  @view_name = nil

  [:called_from, :check, :class, :code, :confidence, :controller, :file, :gem_info, :line, :link_path,
    :message, :method, :model, :relative_path, :template, :user_input, :warning_set, :warning_type].each do |option|

    self.instance_variable_set("@#{option}", options[option])
  end

  result = options[:result]
  if result
    @code ||= result[:call]
    @file ||= result[:location][:file]

    if result[:location][:type] == :template #template result
      @template ||= result[:location][:template]
    else
      @class ||= result[:location][:class]
      @method ||= result[:location][:method]
    end
  end

  if @method.to_s =~ /^fake_filter\d+/
    @method = :before_filter
  end

  if not @line
    if @user_input and @user_input.respond_to? :line
      @line = @user_input.line
    elsif @code and @code.respond_to? :line
      @line = @code.line
    end
  end

  if @gem_info
    if @gem_info.is_a? Hash
      @line ||= @gem_info[:line]
      @file ||= @gem_info[:file]
    else
      # Fallback behavior returns just a string for the file name
      @file ||= @gem_info
    end
  end

  unless @warning_set
    if self.model
      @warning_set = :model
    elsif self.template
      @warning_set = :template
      @called_from = self.template[:caller]
    elsif self.controller
      @warning_set = :controller
    else
      @warning_set = :warning
    end
  end

  if options[:warning_code]
    @warning_code = Brakeman::WarningCodes.code options[:warning_code]
  end

  Brakeman.debug("Warning created without warning code: #{options[:warning_code]}") unless @warning_code

  @format_message = nil
  @row = nil
end

Instance Attribute Details

#called_fromObject (readonly)

Returns the value of attribute called_from



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# File 'lib/brakeman/warning.rb', line 7

def called_from
  @called_from
end

#checkObject (readonly)

Returns the value of attribute check



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# File 'lib/brakeman/warning.rb', line 7

def check
  @check
end

#classObject (readonly)

Returns the value of attribute class



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# File 'lib/brakeman/warning.rb', line 7

def class
  @class
end

#codeObject

Returns the value of attribute code



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# File 'lib/brakeman/warning.rb', line 11

def code
  @code
end

#confidenceObject (readonly)

Returns the value of attribute confidence



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# File 'lib/brakeman/warning.rb', line 7

def confidence
  @confidence
end

#contextObject

Returns the value of attribute context



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# File 'lib/brakeman/warning.rb', line 11

def context
  @context
end

#controllerObject (readonly)

Returns the value of attribute controller



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# File 'lib/brakeman/warning.rb', line 7

def controller
  @controller
end

#fileObject

Returns the value of attribute file



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# File 'lib/brakeman/warning.rb', line 11

def file
  @file
end

#lineObject (readonly)

Returns the value of attribute line



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# File 'lib/brakeman/warning.rb', line 7

def line
  @line
end

#messageObject

Returns the value of attribute message



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# File 'lib/brakeman/warning.rb', line 11

def message
  @message
end

#methodObject (readonly)

Returns the value of attribute method



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# File 'lib/brakeman/warning.rb', line 7

def method
  @method
end

#modelObject (readonly)

Returns the value of attribute model



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# File 'lib/brakeman/warning.rb', line 7

def model
  @model
end

#relative_pathObject

Returns the value of attribute relative_path



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# File 'lib/brakeman/warning.rb', line 11

def relative_path
  @relative_path
end

#templateObject (readonly)

Returns the value of attribute template



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# File 'lib/brakeman/warning.rb', line 7

def template
  @template
end

#user_inputObject (readonly)

Returns the value of attribute user_input



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# File 'lib/brakeman/warning.rb', line 7

def user_input
  @user_input
end

#warning_codeObject (readonly)

Returns the value of attribute warning_code



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# File 'lib/brakeman/warning.rb', line 7

def warning_code
  @warning_code
end

#warning_setObject (readonly)

Returns the value of attribute warning_set



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# File 'lib/brakeman/warning.rb', line 7

def warning_set
  @warning_set
end

#warning_typeObject (readonly)

Returns the value of attribute warning_type



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# File 'lib/brakeman/warning.rb', line 7

def warning_type
  @warning_type
end

Instance Method Details

#eql?(other_warning) ⇒ Boolean

Returns:

  • (Boolean)


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# File 'lib/brakeman/warning.rb', line 87

def eql? other_warning
  self.hash == other_warning.hash
end

#fingerprintObject



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# File 'lib/brakeman/warning.rb', line 177

def fingerprint
  loc = self.location
  location_string = loc && loc.sort_by { |k, v| k.to_s }.inspect
  warning_code_string = sprintf("%03d", @warning_code)
  code_string = @code.inspect

  Digest::SHA2.new(256).update("#{warning_code_string}#{code_string}#{location_string}#{@relative_path}#{self.confidence}").to_s
end

#format_code(strip = true) ⇒ Object

Return String of the code output from the OutputProcessor and stripped of newlines and tabs.



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# File 'lib/brakeman/warning.rb', line 103

def format_code strip = true
  format_ruby self.code, strip
end

#format_messageObject

Return formatted warning message



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# File 'lib/brakeman/warning.rb', line 114

def format_message
  return @format_message if @format_message

  @format_message = self.message.dup

  if self.line
    @format_message << " near line #{self.line}"
  end

  if self.code
    @format_message << ": #{format_code}"
  end

  @format_message
end

#format_user_input(strip = true) ⇒ Object

Return String of the user input formatted and stripped of newlines and tabs.



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# File 'lib/brakeman/warning.rb', line 109

def format_user_input strip = true
  format_ruby self.user_input, strip
end

#hashObject



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# File 'lib/brakeman/warning.rb', line 83

def hash
  self.to_s.hash
end


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# File 'lib/brakeman/warning.rb', line 130

def link
  return @link if @link

  if @link_path
    if @link_path.start_with? "http"
      @link = @link_path
    else
      @link = "http://brakemanscanner.org/docs/warning_types/#{@link_path}"
    end
  else
    warning_path = self.warning_type.to_s.downcase.gsub(/\s+/, '_') + "/"
    @link = "http://brakemanscanner.org/docs/warning_types/#{warning_path}"
  end

  @link
end

#locationObject



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# File 'lib/brakeman/warning.rb', line 186

def location
  case @warning_set
  when :template
    location = { :type => :template, :template => self.view_name }
  when :model
    location = { :type => :model, :model => self.model }
  when :controller
    location = { :type => :controller, :controller => self.controller }
  when :warning
    if self.class
      location = { :type => :method, :class => self.class, :method => self.method }
    else
      location = nil
    end
  end
end

#to_hashObject



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# File 'lib/brakeman/warning.rb', line 203

def to_hash
  { :warning_type => self.warning_type,
    :warning_code => @warning_code,
    :fingerprint => self.fingerprint,
    :message => self.message,
    :file => self.file,
    :line => self.line,
    :link => self.link,
    :code => (@code && self.format_code(false)),
    :render_path => self.called_from,
    :location => self.location,
    :user_input => (@user_input && self.format_user_input(false)),
    :confidence => TEXT_CONFIDENCE[self.confidence]
  }
end

#to_jsonObject



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# File 'lib/brakeman/warning.rb', line 219

def to_json
  MultiJson.dump self.to_hash
end

#to_row(type = :warning) ⇒ Object

Generates a hash suitable for inserting into a table



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# File 'lib/brakeman/warning.rb', line 148

def to_row type = :warning
  @row = { "Confidence" => self.confidence,
    "Warning Type" => self.warning_type.to_s,
    "Message" => self.format_message }

  case type
  when :template
    @row["Template"] = self.view_name.to_s
  when :model
    @row["Model"] = self.model.to_s
  when :controller
    @row["Controller"] = self.controller.to_s
  when :warning
    @row["Class"] = self.class.to_s
    @row["Method"] = self.method.to_s
  end

  @row
end

#to_sObject



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# File 'lib/brakeman/warning.rb', line 168

def to_s
 output =  "(#{TEXT_CONFIDENCE[self.confidence]}) #{self.warning_type} - #{self.message}"
 output << " near line #{self.line}" if self.line
 output << " in #{self.file}" if self.file
 output << ": #{self.format_code}" if self.code

 output
end

#view_nameObject

Returns name of a view, including where it was rendered from



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# File 'lib/brakeman/warning.rb', line 92

def view_name
  return @view_name if @view_name
  if called_from
    @view_name = "#{template[:name]} (#{called_from.last})"
  else
    @view_name = template[:name]
  end
end