39 lines
1.3 KiB
Ruby
39 lines
1.3 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module DnsHelpers
|
|
def block_dns!
|
|
stub_all_dns!
|
|
stub_invalid_dns!
|
|
permit_local_dns!
|
|
end
|
|
|
|
def permit_dns!
|
|
allow(Addrinfo).to receive(:getaddrinfo).and_call_original
|
|
end
|
|
|
|
def stub_all_dns!
|
|
allow(Addrinfo).to receive(:getaddrinfo).with(anything, anything, nil, :STREAM).and_return([])
|
|
allow(Addrinfo).to receive(:getaddrinfo).with(anything, anything, nil, :STREAM, anything, anything).and_return([])
|
|
end
|
|
|
|
def stub_invalid_dns!
|
|
allow(Addrinfo).to receive(:getaddrinfo).with(/\Afoobar\.\w|(\d{1,3}\.){4,}\d{1,3}\z/i, anything, nil, :STREAM) do
|
|
raise SocketError, "getaddrinfo: Name or service not known"
|
|
end
|
|
end
|
|
|
|
def permit_local_dns!
|
|
local_addresses = %r{
|
|
\A
|
|
::1? | # IPV6
|
|
(127|10)\.0\.0\.\d{1,3} | # 127.0.0.x or 10.0.0.x local network
|
|
(192\.168|172\.16)\.\d{1,3}\.\d{1,3} | # 192.168.x.x or 172.16.x.x local network
|
|
0\.0\.0\.0 | # loopback
|
|
localhost
|
|
\z
|
|
}xi
|
|
allow(Addrinfo).to receive(:getaddrinfo).with(local_addresses, anything, nil, :STREAM).and_call_original
|
|
allow(Addrinfo).to receive(:getaddrinfo).with(local_addresses, anything, nil, :STREAM, anything, anything, any_args).and_call_original
|
|
end
|
|
end
|