109 lines
3.4 KiB
Ruby
109 lines
3.4 KiB
Ruby
# frozen_string_literal: true
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require 'doorkeeper/grape/authorization_decorator'
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class Rack::Attack
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class Request
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def authenticated_token
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return @token if defined?(@token)
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@token = Doorkeeper::OAuth::Token.authenticate(
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Doorkeeper::Grape::AuthorizationDecorator.new(self),
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*Doorkeeper.configuration.access_token_methods
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)
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end
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def remote_ip
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@remote_ip ||= (@env["action_dispatch.remote_ip"] || ip).to_s
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end
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def authenticated_user_id
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authenticated_token&.resource_owner_id
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end
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def unauthenticated?
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!authenticated_user_id
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end
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def api_request?
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path.start_with?('/api')
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end
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def web_request?
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!api_request?
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end
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def paging_request?
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params['page'].present? || params['min_id'].present? || params['max_id'].present? || params['since_id'].present?
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end
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end
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PROTECTED_PATHS = %w(
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/auth/sign_in
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/auth
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/auth/password
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).freeze
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PROTECTED_PATHS_REGEX = Regexp.union(PROTECTED_PATHS.map { |path| /\A#{Regexp.escape(path)}/ })
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# Always allow requests from localhost
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# (blocklist & throttles are skipped)
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Rack::Attack.safelist('allow from localhost') do |req|
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# Requests are allowed if the return value is truthy
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req.remote_ip == '127.0.0.1' || req.remote_ip == '::1'
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end
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throttle('throttle_authenticated_api', limit: 300, period: 5.minutes) do |req|
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req.authenticated_user_id if req.api_request?
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end
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throttle('throttle_unauthenticated_api', limit: 300, period: 5.minutes) do |req|
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req.remote_ip if req.api_request? && req.unauthenticated?
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end
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throttle('throttle_api_media', limit: 30, period: 30.minutes) do |req|
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req.authenticated_user_id if req.post? && req.path.start_with?('/api/v1/media')
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end
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throttle('throttle_media_proxy', limit: 30, period: 10.minutes) do |req|
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req.remote_ip if req.path.start_with?('/media_proxy')
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end
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throttle('throttle_api_sign_up', limit: 5, period: 30.minutes) do |req|
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req.remote_ip if req.post? && req.path == '/api/v1/accounts'
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end
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# Throttle paging, as it is mainly used for public pages and AP collections
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throttle('throttle_authenticated_paging', limit: 300, period: 15.minutes) do |req|
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req.authenticated_user_id if req.paging_request?
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end
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throttle('throttle_unauthenticated_paging', limit: 300, period: 15.minutes) do |req|
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req.remote_ip if req.paging_request? && req.unauthenticated?
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end
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API_DELETE_REBLOG_REGEX = /\A\/api\/v1\/statuses\/[\d]+\/unreblog/.freeze
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API_DELETE_STATUS_REGEX = /\A\/api\/v1\/statuses\/[\d]+/.freeze
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throttle('throttle_api_delete', limit: 30, period: 30.minutes) do |req|
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req.authenticated_user_id if (req.post? && req.path =~ API_DELETE_REBLOG_REGEX) || (req.delete? && req.path =~ API_DELETE_STATUS_REGEX)
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end
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throttle('protected_paths', limit: 25, period: 5.minutes) do |req|
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req.remote_ip if req.post? && req.path =~ PROTECTED_PATHS_REGEX
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end
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self.throttled_response = lambda do |env|
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now = Time.now.utc
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match_data = env['rack.attack.match_data']
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headers = {
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'Content-Type' => 'application/json',
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'X-RateLimit-Limit' => match_data[:limit].to_s,
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'X-RateLimit-Remaining' => '0',
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'X-RateLimit-Reset' => (now + (match_data[:period] - now.to_i % match_data[:period])).iso8601(6),
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}
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[429, headers, [{ error: I18n.t('errors.429') }.to_json]]
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end
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end
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