debian-mirror-gitlab/config/initializers/rack_attack.rb

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# Specs for this file can be found on:
# * spec/lib/gitlab/throttle_spec.rb
# * spec/requests/rack_attack_global_spec.rb
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module Gitlab::Throttle
def self.settings
Gitlab::CurrentSettings.current_application_settings
end
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# Returns true if we should use the Admin Area protected paths throttle
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def self.protected_paths_enabled?
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self.settings.throttle_protected_paths_enabled?
end
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def self.omnibus_protected_paths_present?
Rack::Attack.throttles.key?('protected paths')
end
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def self.unauthenticated_options
limit_proc = proc { |req| settings.throttle_unauthenticated_requests_per_period }
period_proc = proc { |req| settings.throttle_unauthenticated_period_in_seconds.seconds }
{ limit: limit_proc, period: period_proc }
end
def self.authenticated_api_options
limit_proc = proc { |req| settings.throttle_authenticated_api_requests_per_period }
period_proc = proc { |req| settings.throttle_authenticated_api_period_in_seconds.seconds }
{ limit: limit_proc, period: period_proc }
end
def self.authenticated_web_options
limit_proc = proc { |req| settings.throttle_authenticated_web_requests_per_period }
period_proc = proc { |req| settings.throttle_authenticated_web_period_in_seconds.seconds }
{ limit: limit_proc, period: period_proc }
end
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def self.protected_paths_options
limit_proc = proc { |req| settings.throttle_protected_paths_requests_per_period }
period_proc = proc { |req| settings.throttle_protected_paths_period_in_seconds.seconds }
{ limit: limit_proc, period: period_proc }
end
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end
class Rack::Attack
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# Order conditions by how expensive they are:
# 1. The most expensive is the `req.unauthenticated?` and
# `req.authenticated_user_id` as it performs an expensive
# DB/Redis query to validate the request
# 2. Slightly less expensive is the need to query DB/Redis
# to unmarshal settings (`Gitlab::Throttle.settings`)
#
# We deliberately skip `/-/health|liveness|readiness`
# from Rack Attack as they need to always be accessible
# by Load Balancer and additional measure is implemented
# (token and whitelisting) to prevent abuse.
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throttle('throttle_unauthenticated', Gitlab::Throttle.unauthenticated_options) do |req|
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if !req.should_be_skipped? &&
Gitlab::Throttle.settings.throttle_unauthenticated_enabled &&
req.unauthenticated?
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req.ip
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end
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end
throttle('throttle_authenticated_api', Gitlab::Throttle.authenticated_api_options) do |req|
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if req.api_request? &&
Gitlab::Throttle.settings.throttle_authenticated_api_enabled
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req.authenticated_user_id([:api])
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end
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end
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# Product analytics feature is in experimental stage.
# At this point we want to limit amount of events registered
# per application (aid stands for application id).
throttle('throttle_product_analytics_collector', limit: 100, period: 60) do |req|
if req.product_analytics_collector_request?
req.params['aid']
end
end
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throttle('throttle_authenticated_web', Gitlab::Throttle.authenticated_web_options) do |req|
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if req.web_request? &&
Gitlab::Throttle.settings.throttle_authenticated_web_enabled
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req.authenticated_user_id([:api, :rss, :ics])
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end
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end
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throttle('throttle_unauthenticated_protected_paths', Gitlab::Throttle.protected_paths_options) do |req|
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if req.post? &&
!req.should_be_skipped? &&
req.protected_path? &&
Gitlab::Throttle.protected_paths_enabled? &&
req.unauthenticated?
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req.ip
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end
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end
throttle('throttle_authenticated_protected_paths_api', Gitlab::Throttle.protected_paths_options) do |req|
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if req.post? &&
req.api_request? &&
req.protected_path? &&
Gitlab::Throttle.protected_paths_enabled?
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req.authenticated_user_id([:api])
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end
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end
throttle('throttle_authenticated_protected_paths_web', Gitlab::Throttle.protected_paths_options) do |req|
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if req.post? &&
req.web_request? &&
req.protected_path? &&
Gitlab::Throttle.protected_paths_enabled?
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req.authenticated_user_id([:api, :rss, :ics])
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end
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end
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class Request
def unauthenticated?
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!(authenticated_user_id([:api, :rss, :ics]) || authenticated_runner_id)
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end
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def authenticated_user_id(request_formats)
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request_authenticator.user(request_formats)&.id
end
def authenticated_runner_id
request_authenticator.runner&.id
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end
def api_request?
path.start_with?('/api')
end
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def api_internal_request?
path =~ %r{^/api/v\d+/internal/}
end
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def health_check_request?
path =~ %r{^/-/(health|liveness|readiness)}
end
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def product_analytics_collector_request?
path.start_with?('/-/collector/i')
end
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def should_be_skipped?
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api_internal_request? || health_check_request?
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end
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def web_request?
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!api_request? && !health_check_request?
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end
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def protected_path?
!protected_path_regex.nil?
end
def protected_path_regex
path =~ protected_paths_regex
end
private
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def request_authenticator
@request_authenticator ||= Gitlab::Auth::RequestAuthenticator.new(self)
end
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def protected_paths
Gitlab::CurrentSettings.current_application_settings.protected_paths
end
def protected_paths_regex
Regexp.union(protected_paths.map { |path| /\A#{Regexp.escape(path)}/ })
end
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end
end
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::Rack::Attack.extend_if_ee('::EE::Gitlab::Rack::Attack')
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::Rack::Attack::Request.prepend_if_ee('::EE::Gitlab::Rack::Attack::Request')