HTTP proxy support for outgoing request, manage access to hidden service (#7134)

* Add support for HTTP client proxy

* Add access control for darknet

Supress error when access to darknet via transparent proxy

* Fix the codes pointed out

* Lint

* Fix an omission + lint

* any? -> include?

* Change detection method to regexp to avoid test fail
master
MIYAGI Hikaru 6 years ago committed by Eugen Rochko
parent 9d4710ed00
commit f58dcbc981
  1. 7
      .env.production.sample
  2. 16
      app/lib/request.rb
  3. 24
      config/initializers/http_client_proxy.rb

@ -214,3 +214,10 @@ STREAMING_CLUSTER_NUM=1
# SAML_UID_ATTRIBUTE="urn:oid:0.9.2342.19200300.100.1.1"
# SAML_ATTRIBUTES_STATEMENTS_VERIFIED=
# SAML_ATTRIBUTES_STATEMENTS_VERIFIED_EMAIL=
# Use HTTP proxy for outgoing request (optional)
# http_proxy=http://gateway.local:8118
# Access control for hidden service.
# ALLOW_ACCESS_TO_HIDDEN_SERVICE=true
# If you use transparent proxy to access to hidden service, uncomment following for skipping private address check.
# HIDDEN_SERVICE_VIA_TRANSPARENT_PROXY=true

@ -11,9 +11,10 @@ class Request
def initialize(verb, url, **options)
@verb = verb
@url = Addressable::URI.parse(url).normalize
@options = options.merge(socket_class: Socket)
@options = options.merge(use_proxy? ? Rails.configuration.x.http_client_proxy : { socket_class: Socket })
@headers = {}
raise Mastodon::HostValidationError, 'Instance does not support hidden service connections' if block_hidden_service?
set_common_headers!
set_digest! if options.key?(:body)
end
@ -99,6 +100,14 @@ class Request
@http_client ||= HTTP.timeout(:per_operation, timeout).follow(max_hops: 2)
end
def use_proxy?
Rails.configuration.x.http_client_proxy.present?
end
def block_hidden_service?
!Rails.configuration.x.access_to_hidden_service && /\.(onion|i2p)$/.match(@url.host)
end
module ClientLimit
def body_with_limit(limit = 1.megabyte)
raise Mastodon::LengthValidationError if content_length.present? && content_length > limit
@ -129,6 +138,7 @@ class Request
class Socket < TCPSocket
class << self
def open(host, *args)
return super host, *args if thru_hidden_service? host
outer_e = nil
Addrinfo.foreach(host, nil, nil, :SOCK_STREAM) do |address|
begin
@ -142,6 +152,10 @@ class Request
end
alias new open
def thru_hidden_service?(host)
Rails.configuration.x.hidden_service_via_transparent_proxy && /\.(onion|i2p)$/.match(host)
end
end
end

@ -0,0 +1,24 @@
Rails.application.configure do
config.x.http_client_proxy = {}
if ENV['http_proxy'].present?
proxy = URI.parse(ENV['http_proxy'])
raise "Unsupported proxy type: #{proxy.scheme}" unless %w(http https).include? proxy.scheme
raise "No proxy host" unless proxy.host
host = proxy.host
host = host[1...-1] if host[0] == '[' #for IPv6 address
config.x.http_client_proxy[:proxy] = { proxy_address: host, proxy_port: proxy.port, proxy_username: proxy.user, proxy_password: proxy.password }.compact
end
config.x.access_to_hidden_service = ENV['ALLOW_ACCESS_TO_HIDDEN_SERVICE'] == 'true'
config.x.hidden_service_via_transparent_proxy = ENV['HIDDEN_SERVICE_VIA_TRANSPARENT_PROXY'] == 'true'
end
module Goldfinger
def self.finger(uri, opts = {})
to_hidden = /\.(onion|i2p)(:\d+)?$/.match(uri)
raise Mastodon::HostValidationError, 'Instance does not support hidden service connections' if !Rails.configuration.x.access_to_hidden_service && to_hidden
opts = opts.merge(Rails.configuration.x.http_client_proxy).merge(ssl: !to_hidden)
Goldfinger::Client.new(uri, opts).finger
end
end
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