Blouson

Gem Version Build Status

Blouson is a filter tool for Rails to conceal sensitive data from various logs.

  • HTTP Request parameters in Rails log
  • SQL query in Rails log
  • Exception messages in ActiveRecord::StatementInvalid
  • Sentry Raven parameters

Installation

Add this line to your application's Gemfile:

gem 'blouson'

And then execute:

$ bundle

Or install it yourself as:

$ gem install blouson

Usage

SensitiveParamsSilencer

If there is a HTTP request parameter prefixed with secure_, Blouson conceals sensitive data from logging. Blouson enables this filter automatically.

Example:

Started PUT "/employees/1" for 127.0.0.1 at Tue Jan 1 00:00:00 +0900 2013
Processing by EmployeesController#update as HTML
  Parameters: {"commit"=>"Update Employee", "id"=>"1", "employee"=>{"name"=>"", "secure_personal_information"=>"[FILTERED]"}, "utf8"=>"✓"}
  [Blouson::SensitiveParamsSilencer] SQL Log is skipped for sensitive data

SensitiveQueryFilter

If there is a table prefixed with secure_, in exception message of ActiveRecord::StatementInvalid, Blouson conceals sensitive data from exception messages. Blouson enables this filter automatically.

Example:

RuntimeError: error: SELECT  `secure_users`.* FROM `secure_users` WHERE `secure_users`.`email` = '[FILTERED]'  ORDER BY `secure_users`.`id` ASC LIMIT 1

SensitiveTableQueryLogSilencer

Blouson provides an Arproxy module to suppress query logs for secure_ prefix tables. If there is a query log for secure_ prefix table, Blouson conceals it. This proxy does not works automatically, so that you have to set Blouson::SensitiveTableQueryLogSilencer in your Arproxy initializer.

require 'blouson/sensitive_table_query_log_silencer'
# your initializers

Arproxy.configure do |config|
  config.adapter = "mysql2"
  config.use Blouson::SensitiveTableQueryLogSilencer
end
Arproxy.enable!

RavenParameterFilterProcessor

Blouson provides an Raven-Ruby processor to conceal sensitive data from query string, request body, request headers and cookie values.

require 'blouson/raven_parameter_filter_processor'

filter_pattern = Rails.application.config.filter_parameters
secure_headers = %w(secret_token)

Raven.configure do |config|
  ...
  config.processors = [Blouson::RavenParameterFilterProcessor.create(filter_pattern, secure_headers)]
  ...
end

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/cookpad/blouson.

License

The gem is available as open source under the terms of the MIT License.