discourse/app/models/concerns/second_factor_manager.rb

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module SecondFactorManager
extend ActiveSupport::Concern
def totp
self.create_totp
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ROTP::TOTP.new(self.user_second_factors.totp.data, issuer: SiteSetting.title)
end
def create_totp(opts = {})
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if !self.user_second_factors.totp
UserSecondFactor.create!({
user_id: self.id,
method: UserSecondFactor.methods[:totp],
data: ROTP::Base32.random_base32
}.merge(opts))
end
end
def totp_provisioning_uri
self.totp.provisioning_uri(self.email)
end
def authenticate_totp(token)
totp = self.totp
last_used = 0
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if self.user_second_factors.totp.last_used
last_used = self.user_second_factors.totp.last_used.to_i
end
authenticated = !token.blank? && totp.verify_with_drift_and_prior(token, 30, last_used)
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self.user_second_factors.totp.update!(last_used: DateTime.now) if authenticated
!!authenticated
end
def totp_enabled?
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!!(self&.user_second_factors&.totp&.enabled?) &&
!SiteSetting.enable_sso &&
SiteSetting.enable_local_logins
end
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def backup_codes_enabled?
!!(self&.user_second_factors&.backup_codes&.present?) &&
!SiteSetting.enable_sso &&
SiteSetting.enable_local_logins
end
def remaining_backup_codes
self&.user_second_factors&.backup_codes&.count
end
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def authenticate_second_factor(token, second_factor_method)
if second_factor_method == UserSecondFactor.methods[:totp]
authenticate_totp(token)
elsif second_factor_method == UserSecondFactor.methods[:backup_codes]
authenticate_backup_code(token)
end
end
def generate_backup_codes
codes = []
10.times do
codes << SecureRandom.hex(8)
end
codes_json = codes.map do |code|
salt = SecureRandom.hex(16)
{ salt: salt,
code_hash: hash_backup_code(code, salt)
}
end
if self.user_second_factors.backup_codes.empty?
create_backup_codes(codes_json)
else
self.user_second_factors.where(method: UserSecondFactor.methods[:backup_codes]).destroy_all
create_backup_codes(codes_json)
end
codes
end
def create_backup_codes(codes)
codes.each do |code|
UserSecondFactor.create!(
user_id: self.id,
data: code.to_json,
enabled: true,
method: UserSecondFactor.methods[:backup_codes]
)
end
end
def authenticate_backup_code(backup_code)
if !backup_code.blank?
codes = self&.user_second_factors&.backup_codes
codes.each do |code|
stored_code = JSON.parse(code.data)["code_hash"]
stored_salt = JSON.parse(code.data)["salt"]
backup_hash = hash_backup_code(backup_code, stored_salt)
next unless backup_hash == stored_code
code.update(enabled: false, last_used: DateTime.now)
return true
end
false
end
false
end
def hash_backup_code(code, salt)
Pbkdf2.hash_password(code, salt, Rails.configuration.pbkdf2_iterations, Rails.configuration.pbkdf2_algorithm)
end
end