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# frozen_string_literal: true
# This class is part of the Gitlab::HTTP wrapper. It handles local requests and header timeouts
#
# 1. Local requests
# Depending on the value of the global setting allow_local_requests_from_web_hooks_and_services,
# this adapter will allow/block connection to internal IPs and/or urls.
#
# This functionality can be overridden by providing the setting the option
# allow_local_requests = true in the request. For example:
# Gitlab::HTTP.get('http://www.gitlab.com', allow_local_requests: true)
#
# This option will take precedence over the global setting.
#
# 2. Header timeouts
# When the use_read_total_timeout option is used, that means the receiver
# of the HTTP request cannot be trusted. Gitlab::BufferedIo will be used,
# to read header data. It is a modified version of Net::BufferedIO that
# raises a timeout error if reading header data takes too much time.
module Gitlab
class HTTPConnectionAdapter < HTTParty::ConnectionAdapter
extend ::Gitlab::Utils::Override
override :connection
def connection
result = validate_url_with_proxy!(uri)
@uri = result.uri
hostname = result.hostname
http = super
http.hostname_override = hostname if hostname
unless result.use_proxy
http.proxy_from_env = false
http.proxy_address = nil
end
gitlab_http = Gitlab::NetHttpAdapter.new(http.address, http.port)
http.instance_variables.each do |variable|
gitlab_http.instance_variable_set(variable, http.instance_variable_get(variable))
end
gitlab_http
end
private
def validate_url_with_proxy!(url)
Gitlab::UrlBlocker.validate_url_with_proxy!(
url, allow_local_network: allow_local_requests?,
allow_localhost: allow_local_requests?,
allow_object_storage: allow_object_storage?,
dns_rebind_protection: dns_rebind_protection?,
schemes: %w[http https])
rescue Gitlab::UrlBlocker::BlockedUrlError => e
raise Gitlab::HTTP::BlockedUrlError, "URL is blocked: #{e.message}"
end
def allow_local_requests?
options.fetch(:allow_local_requests, allow_settings_local_requests?)
end
def allow_object_storage?
options.fetch(:allow_object_storage, false)
end
def dns_rebind_protection?
Gitlab::CurrentSettings.dns_rebinding_protection_enabled?
end
def allow_settings_local_requests?
Gitlab::CurrentSettings.allow_local_requests_from_web_hooks_and_services?
end
end
end
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