mastodon/config/initializers/rack_attack.rb
Eugen Rochko 05ef749a0f Add REST API for creating an account
The method is available to apps with a token obtained via the client
credentials grant. It creates a user and account records, as well as
an access token for the app that initiated the request. The user is
unconfirmed, and an e-mail is sent as usual.

The method returns the access token, which the app should save for
later. The REST API is not available to users with unconfirmed
accounts, so the app must be smart to wait for the user to click a
link in their e-mail inbox.

The method is rate-limited by IP to 5 requests per 30 minutes.
2018-12-19 07:02:06 +01:00

82 lines
2.2 KiB
Ruby

# frozen_string_literal: true
require 'doorkeeper/grape/authorization_decorator'
class Rack::Attack
class Request
def authenticated_token
return @token if defined?(@token)
@token = Doorkeeper::OAuth::Token.authenticate(
Doorkeeper::Grape::AuthorizationDecorator.new(self),
*Doorkeeper.configuration.access_token_methods
)
end
def authenticated_user_id
authenticated_token&.resource_owner_id
end
def unauthenticated?
!authenticated_user_id
end
def api_request?
path.start_with?('/api')
end
def web_request?
!api_request?
end
end
PROTECTED_PATHS = %w(
/auth/sign_in
/auth
/auth/password
).freeze
PROTECTED_PATHS_REGEX = Regexp.union(PROTECTED_PATHS.map { |path| /\A#{Regexp.escape(path)}/ })
# Always allow requests from localhost
# (blocklist & throttles are skipped)
Rack::Attack.safelist('allow from localhost') do |req|
# Requests are allowed if the return value is truthy
req.ip == '127.0.0.1' || req.ip == '::1'
end
throttle('throttle_authenticated_api', limit: 300, period: 5.minutes) do |req|
req.api_request? && req.authenticated_user_id
end
throttle('throttle_unauthenticated_api', limit: 7_500, period: 5.minutes) do |req|
req.ip if req.api_request?
end
throttle('throttle_media', limit: 30, period: 30.minutes) do |req|
req.authenticated_user_id if req.post? && req.path.start_with?('/api/v1/media')
end
throttle('throttle_api_sign_up', limit: 5, period: 30.minutes) do |req|
req.ip if req.post? && req.path == '/api/v1/accounts'
end
throttle('protected_paths', limit: 25, period: 5.minutes) do |req|
req.ip if req.post? && req.path =~ PROTECTED_PATHS_REGEX
end
self.throttled_response = lambda do |env|
now = Time.now.utc
match_data = env['rack.attack.match_data']
headers = {
'Content-Type' => 'application/json',
'X-RateLimit-Limit' => match_data[:limit].to_s,
'X-RateLimit-Remaining' => '0',
'X-RateLimit-Reset' => (now + (match_data[:period] - now.to_i % match_data[:period])).iso8601(6),
}
[429, headers, [{ error: I18n.t('errors.429') }.to_json]]
end
end