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107 lines
3.3 KiB
107 lines
3.3 KiB
#-- encoding: UTF-8
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#-- copyright
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# OpenProject is a project management system.
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# Copyright (C) 2012-2013 the OpenProject Foundation (OPF)
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License version 3.
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#
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# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
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# Copyright (C) 2006-2013 Jean-Philippe Lang
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# Copyright (C) 2010-2013 the ChiliProject Team
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# See doc/COPYRIGHT.rdoc for more details.
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#++
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module Redmine
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module Ciphering
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def self.included(base)
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base.extend ClassMethods
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end
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class << self
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def encrypt_text(text)
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if cipher_key.blank?
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text
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else
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c = OpenSSL::Cipher::Cipher.new("aes-256-cbc")
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iv = c.random_iv
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c.encrypt
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c.key = cipher_key
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c.iv = iv
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e = c.update(text.to_s)
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e << c.final
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"aes-256-cbc:" + [e, iv].map {|v| Base64.encode64(v).strip}.join('--')
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end
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end
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def decrypt_text(text)
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if text && match = text.match(/\Aaes-256-cbc:(.+)\Z/)
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text = match[1]
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c = OpenSSL::Cipher::Cipher.new("aes-256-cbc")
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e, iv = text.split("--").map {|s| Base64.decode64(s)}
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c.decrypt
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c.key = cipher_key
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c.iv = iv
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d = c.update(e)
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d << c.final
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else
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text
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end
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end
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def cipher_key
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key = Redmine::Configuration['database_cipher_key'].to_s
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key.blank? ? nil : Digest::SHA256.hexdigest(key)
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end
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end
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module ClassMethods
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def encrypt_all(attribute)
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transaction do
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all.each do |object|
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clear = object.send(attribute)
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object.send "#{attribute}=", clear
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raise(ActiveRecord::Rollback) unless object.save(:validate => false)
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end
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end ? true : false
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end
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def decrypt_all(attribute)
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transaction do
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all.each do |object|
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clear = object.send(attribute)
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object[attribute] = clear
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raise(ActiveRecord::Rollback) unless object.save(:validate => false)
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end
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end
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end ? true : false
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end
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private
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# Returns the value of the given ciphered attribute
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def read_ciphered_attribute(attribute)
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Redmine::Ciphering.decrypt_text(read_attribute(attribute))
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end
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# Sets the value of the given ciphered attribute
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def write_ciphered_attribute(attribute, value)
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write_attribute(attribute, Redmine::Ciphering.encrypt_text(value))
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end
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end
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end
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