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# frozen_string_literal: false
require 'test/unit'
require 'resolv'
class TestResolvSvcbHttps < Test::Unit::TestCase
# Wraps a RR in answer section
def wrap_rdata(rrtype, rrclass, rdata)
[
"\x00\x00\x00\x00", # ID/FLAGS
[0, 1, 0, 0].pack('nnnn'), # QDCOUNT/ANCOUNT/NSCOUNT/ARCOUNT
"\x07example\x03com\x00", # NAME
[rrtype, rrclass, 0, rdata.bytesize].pack('nnNn'), # TYPE/CLASS/TTL/RDLENGTH
rdata,
].join.b
end
def test_svcparams
params = Resolv::DNS::SvcParams.new([Resolv::DNS::SvcParam::Mandatory.new([1])])
assert_equal 1, params.count
params.add Resolv::DNS::SvcParam::NoDefaultALPN.new
params.add Resolv::DNS::SvcParam::ALPN.new(%w[h2 h3])
assert_equal 3, params.count
assert_equal [1], params[:mandatory].keys
assert_equal [1], params[0].keys
assert_equal %w[h2 h3], params[:alpn].protocol_ids
assert_equal %w[h2 h3], params[1].protocol_ids
params.delete :mandatory
params.delete :alpn
assert_equal 1, params.count
assert_nil params[:mandatory]
assert_nil params[1]
ary = params.each.to_a
assert_instance_of Resolv::DNS::SvcParam::NoDefaultALPN, ary.first
end
def test_svcb
rr = Resolv::DNS::Resource::IN::SVCB.new(0, 'example.com.')
assert_equal 0, rr.priority
assert rr.alias_mode?
assert !rr.service_mode?
assert_equal Resolv::DNS::Name.create('example.com.'), rr.target
assert rr.params.empty?
rr = Resolv::DNS::Resource::IN::SVCB.new(16, 'example.com.', [
Resolv::DNS::SvcParam::ALPN.new(%w[h2 h3]),
])
assert_equal 16, rr.priority
assert !rr.alias_mode?
assert rr.service_mode?
assert_equal 1, rr.params.count
assert_instance_of Resolv::DNS::SvcParam::ALPN, rr.params[:alpn]
end
def test_svcb_encode_order
msg = Resolv::DNS::Message.new(0)
msg.add_answer(
'example.com.', 0,
Resolv::DNS::Resource::IN::SVCB.new(16, 'foo.example.org.', [
Resolv::DNS::SvcParam::ALPN.new(%w[h2 h3-19]),
Resolv::DNS::SvcParam::Mandatory.new([4, 1]),
Resolv::DNS::SvcParam::IPv4Hint.new(['192.0.2.1']),
])
)
expected = wrap_rdata 64, 1, "\x00\x10\x03foo\x07example\x03org\x00" +
"\x00\x00\x00\x04\x00\x01\x00\x04" +
"\x00\x01\x00\x09\x02h2\x05h3-19" +
"\x00\x04\x00\x04\xc0\x00\x02\x01"
assert_equal expected, msg.encode
end
## Test vectors from [RFC9460]
def test_alias_mode
wire = wrap_rdata 65, 1, "\x00\x00\x03foo\x07example\x03com\x00"
msg = Resolv::DNS::Message.decode(wire)
_, _, rr = msg.answer.first
assert_equal 0, rr.priority
assert_equal Resolv::DNS::Name.create('foo.example.com.'), rr.target
assert_equal 0, rr.params.count
assert_equal wire, msg.encode
end
def test_target_name_is_root
wire = wrap_rdata 64, 1, "\x00\x01\x00"
msg = Resolv::DNS::Message.decode(wire)
_, _, rr = msg.answer.first
assert_equal 1, rr.priority
assert_equal Resolv::DNS::Name.create('.'), rr.target
assert_equal 0, rr.params.count
assert_equal wire, msg.encode
end
def test_specifies_port
wire = wrap_rdata 64, 1, "\x00\x10\x03foo\x07example\x03com\x00" +
"\x00\x03\x00\x02\x00\x35"
msg = Resolv::DNS::Message.decode(wire)
_, _, rr = msg.answer.first
assert_equal 16, rr.priority
assert_equal Resolv::DNS::Name.create('foo.example.com.'), rr.target
assert_equal 1, rr.params.count
assert_equal 53, rr.params[:port].port
assert_equal wire, msg.encode
end
def test_generic_key
wire = wrap_rdata 64, 1, "\x00\x01\x03foo\x07example\x03com\x00" +
"\x02\x9b\x00\x05hello"
msg = Resolv::DNS::Message.decode(wire)
_, _, rr = msg.answer.first
assert_equal 1, rr.priority
assert_equal Resolv::DNS::Name.create('foo.example.com.'), rr.target
assert_equal 1, rr.params.count
assert_equal 'hello', rr.params[:key667].value
assert_equal wire, msg.encode
end
def test_two_ipv6hints
wire = wrap_rdata 64, 1, "\x00\x01\x03foo\x07example\x03com\x00" +
"\x00\x06\x00\x20" +
("\x20\x01\x0d\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01" +
"\x20\x01\x0d\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x53\x00\x01")
msg = Resolv::DNS::Message.decode(wire)
_, _, rr = msg.answer.first
assert_equal 1, rr.priority
assert_equal Resolv::DNS::Name.create('foo.example.com.'), rr.target
assert_equal 1, rr.params.count
assert_equal [Resolv::IPv6.create('2001:db8::1'), Resolv::IPv6.create('2001:db8::53:1')],
rr.params[:ipv6hint].addresses
assert_equal wire, msg.encode
end
def test_ipv6hint_embedded_ipv4
wire = wrap_rdata 64, 1, "\x00\x01\x07example\x03com\x00" +
"\x00\x06\x00\x10\x20\x01\x0d\xb8\x01\x22\x03\x44\x00\x00\x00\x00\xc0\x00\x02\x21"
msg = Resolv::DNS::Message.decode(wire)
_, _, rr = msg.answer.first
assert_equal 1, rr.priority
assert_equal Resolv::DNS::Name.create('example.com.'), rr.target
assert_equal 1, rr.params.count
assert_equal [Resolv::IPv6.create('2001:db8:122:344::192.0.2.33')],
rr.params[:ipv6hint].addresses
assert_equal wire, msg.encode
end
def test_mandatory_alpn_ipv4hint
wire = wrap_rdata 64, 1, "\x00\x10\x03foo\x07example\x03org\x00" +
"\x00\x00\x00\x04\x00\x01\x00\x04" +
"\x00\x01\x00\x09\x02h2\x05h3-19" +
"\x00\x04\x00\x04\xc0\x00\x02\x01"
msg = Resolv::DNS::Message.decode(wire)
_, _, rr = msg.answer.first
assert_equal 16, rr.priority
assert_equal Resolv::DNS::Name.create('foo.example.org.'), rr.target
assert_equal 3, rr.params.count
assert_equal [1, 4], rr.params[:mandatory].keys
assert_equal ['h2', 'h3-19'], rr.params[:alpn].protocol_ids
assert_equal [Resolv::IPv4.create('192.0.2.1')], rr.params[:ipv4hint].addresses
assert_equal wire, msg.encode
end
def test_alpn_comma_backslash
wire = wrap_rdata 64, 1, "\x00\x10\x03foo\x07example\x03org\x00" +
"\x00\x01\x00\x0c\x08f\\oo,bar\x02h2"
msg = Resolv::DNS::Message.decode(wire)
_, _, rr = msg.answer.first
assert_equal 16, rr.priority
assert_equal Resolv::DNS::Name.create('foo.example.org.'), rr.target
assert_equal 1, rr.params.count
assert_equal ['f\oo,bar', 'h2'], rr.params[:alpn].protocol_ids
assert_equal wire, msg.encode
end
## For [RFC9461]
def test_dohpath
wire = wrap_rdata 64, 1, "\x00\x01\x03one\x03one\x03one\x03one\x00" +
"\x00\x01\x00\x03\x02h2" +
"\x00\x03\x00\x02\x01\xbb" +
"\x00\x04\x00\x08\x01\x01\x01\x01\x01\x00\x00\x01" +
"\x00\x06\x00\x20" +
("\x26\x06\x47\x00\x47\x00\x00\x00\x00\x00\x00\x00\x00\x00\x11\x11" +
"\x26\x06\x47\x00\x47\x00\x00\x00\x00\x00\x00\x00\x00\x00\x10\x01") +
"\x00\x07\x00\x10/dns-query{?dns}"
msg = Resolv::DNS::Message.decode(wire)
_, _, rr = msg.answer.first
assert_equal 1, rr.priority
assert_equal Resolv::DNS::Name.create('one.one.one.one.'), rr.target
assert_equal 5, rr.params.count
assert_equal ['h2'], rr.params[:alpn].protocol_ids
assert_equal 443, rr.params[:port].port
assert_equal [Resolv::IPv4.create('1.1.1.1'), Resolv::IPv4.create('1.0.0.1')],
rr.params[:ipv4hint].addresses
assert_equal [Resolv::IPv6.create('2606:4700:4700::1111'), Resolv::IPv6.create('2606:4700:4700::1001')],
rr.params[:ipv6hint].addresses
assert_equal '/dns-query{?dns}', rr.params[:dohpath].template
assert_equal wire, msg.encode
end
end
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