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93 lines
2.7 KiB
Ruby
93 lines
2.7 KiB
Ruby
# frozen_string_literal: true
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class UserPassword < ActiveRecord::Base
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MAX_PASSWORD_LENGTH = 200
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TARGET_PASSWORD_ALGORITHM =
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"$pbkdf2-#{Rails.configuration.pbkdf2_algorithm}$i=#{Rails.configuration.pbkdf2_iterations},l=32$"
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PASSWORD_SALT_LENGTH = 16
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belongs_to :user, required: true
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validates :user_id, uniqueness: true
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validate :password_validator
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before_save :ensure_password_is_hashed
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after_save :clear_raw_password
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def password
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# this getter method is still required, but we store the set password in @raw_password instead of making it easily accessible from the getter
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nil
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end
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def password=(pw)
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return if pw.blank?
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self.password_hash_will_change!
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@raw_password = pw
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end
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def password_validation_required?
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@raw_password.present?
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end
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def confirm_password?(pw)
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# nothing to confirm if this record has not been persisted yet
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return false if !persisted?
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return false if password_hash != hash_password(pw, password_salt, password_algorithm)
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regen_password!(pw) if password_algorithm != TARGET_PASSWORD_ALGORITHM
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true
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end
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private
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def clear_raw_password
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@raw_password = nil
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end
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def password_validator
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UserPasswordValidator.new(attributes: :password).validate_each(self, :password, @raw_password)
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end
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def hash_password(pw, salt, algorithm)
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raise StandardError.new("password is too long") if pw.size > MAX_PASSWORD_LENGTH
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PasswordHasher.hash_password(password: pw, salt: salt, algorithm: algorithm)
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end
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def ensure_password_is_hashed
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return if @raw_password.blank?
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self.password_salt = SecureRandom.hex(PASSWORD_SALT_LENGTH)
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self.password_algorithm = TARGET_PASSWORD_ALGORITHM
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self.password_hash = hash_password(@raw_password, password_salt, password_algorithm)
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self.password_expired_at = nil
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end
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def regen_password!(pw)
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# Regenerate password_hash with new algorithm and persist, we skip validation here since it has already run once when the hash was persisted the first time
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salt = SecureRandom.hex(PASSWORD_SALT_LENGTH)
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update_columns(
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password_algorithm: TARGET_PASSWORD_ALGORITHM,
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password_salt: salt,
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password_hash: hash_password(pw, salt, TARGET_PASSWORD_ALGORITHM),
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)
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end
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end
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# == Schema Information
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#
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# Table name: user_passwords
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#
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# id :integer not null, primary key
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# user_id :integer not null
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# password_hash :string(64) not null
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# password_salt :string(32) not null
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# password_algorithm :string(64) not null
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# password_expired_at :datetime
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# created_at :datetime not null
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# updated_at :datetime not null
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#
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# Indexes
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#
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# index_user_passwords_on_user_id (user_id) UNIQUE
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#
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