package dnsforward import ( "net" "testing" "github.com/AdguardTeam/urlfilter/rules" "github.com/miekg/dns" "github.com/stretchr/testify/assert" ) func TestGenAnswerHTTPS_andSVCB(t *testing.T) { // Preconditions. s := &Server{ conf: ServerConfig{ FilteringConfig: FilteringConfig{ BlockedResponseTTL: 3600, }, }, } req := &dns.Msg{ Question: []dns.Question{{ Name: "abcd", }}, } // Constants and helper values. const host = "example.com" const prio = 32 ip4 := net.IPv4(127, 0, 0, 1) ip6 := net.IP{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1} // Helper functions. dnssvcb := func(key, value string) (svcb *rules.DNSSVCB) { svcb = &rules.DNSSVCB{ Target: host, Priority: prio, } if key == "" { return svcb } svcb.Params = map[string]string{ key: value, } return svcb } wantsvcb := func(kv dns.SVCBKeyValue) (want *dns.SVCB) { want = &dns.SVCB{ Hdr: s.hdr(req, dns.TypeSVCB), Priority: prio, Target: dns.Fqdn(host), } if kv == nil { return want } want.Value = []dns.SVCBKeyValue{kv} return want } // Tests. testCases := []struct { svcb *rules.DNSSVCB want *dns.SVCB name string }{{ svcb: dnssvcb("", ""), want: wantsvcb(nil), name: "no_params", }, { svcb: dnssvcb("foo", "bar"), want: wantsvcb(nil), name: "invalid", }, { svcb: dnssvcb("alpn", "h3"), want: wantsvcb(&dns.SVCBAlpn{Alpn: []string{"h3"}}), name: "alpn", }, { svcb: dnssvcb("ech", "AAAA"), want: wantsvcb(&dns.SVCBECHConfig{ECH: []byte{0, 0, 0}}), name: "ech", }, { svcb: dnssvcb("echconfig", "AAAA"), want: wantsvcb(&dns.SVCBECHConfig{ECH: []byte{0, 0, 0}}), name: "ech_deprecated", }, { svcb: dnssvcb("echconfig", "%BAD%"), want: wantsvcb(nil), name: "ech_invalid", }, { svcb: dnssvcb("ipv4hint", "127.0.0.1"), want: wantsvcb(&dns.SVCBIPv4Hint{Hint: []net.IP{ip4}}), name: "ipv4hint", }, { svcb: dnssvcb("ipv4hint", "127.0.01"), want: wantsvcb(nil), name: "ipv4hint_invalid", }, { svcb: dnssvcb("ipv6hint", "::1"), want: wantsvcb(&dns.SVCBIPv6Hint{Hint: []net.IP{ip6}}), name: "ipv6hint", }, { svcb: dnssvcb("ipv6hint", ":::1"), want: wantsvcb(nil), name: "ipv6hint_invalid", }, { svcb: dnssvcb("mandatory", "alpn"), want: wantsvcb(&dns.SVCBMandatory{Code: []dns.SVCBKey{dns.SVCB_ALPN}}), name: "mandatory", }, { svcb: dnssvcb("mandatory", "alpnn"), want: wantsvcb(nil), name: "mandatory_invalid", }, { svcb: dnssvcb("no-default-alpn", ""), want: wantsvcb(&dns.SVCBNoDefaultAlpn{}), name: "no_default_alpn", }, { svcb: dnssvcb("dohpath", "/dns-query"), want: wantsvcb(&dns.SVCBDoHPath{Template: "/dns-query"}), name: "dohpath", }, { svcb: dnssvcb("port", "8080"), want: wantsvcb(&dns.SVCBPort{Port: 8080}), name: "port", }, { svcb: dnssvcb("port", "1005008080"), want: wantsvcb(nil), name: "bad_port", }} for _, tc := range testCases { t.Run("https", func(t *testing.T) { t.Run(tc.name, func(t *testing.T) { want := &dns.HTTPS{SVCB: *tc.want} want.Hdr.Rrtype = dns.TypeHTTPS got := s.genAnswerHTTPS(req, tc.svcb) assert.Equal(t, want, got) }) }) t.Run("svcb", func(t *testing.T) { t.Run(tc.name, func(t *testing.T) { got := s.genAnswerSVCB(req, tc.svcb) assert.Equal(t, tc.want, got) }) }) } }