package querylog import ( "bytes" "encoding/base64" "net" "strings" "testing" "time" "github.com/AdguardTeam/AdGuardHome/internal/aghtest" "github.com/AdguardTeam/AdGuardHome/internal/filtering" "github.com/AdguardTeam/golibs/log" "github.com/AdguardTeam/urlfilter/rules" "github.com/miekg/dns" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" ) func TestDecodeLogEntry(t *testing.T) { logOutput := &bytes.Buffer{} aghtest.ReplaceLogWriter(t, logOutput) aghtest.ReplaceLogLevel(t, log.DEBUG) t.Run("success", func(t *testing.T) { const ansStr = `Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==` const data = `{"IP":"127.0.0.1",` + `"CID":"cli42",` + `"T":"2020-11-25T18:55:56.519796+03:00",` + `"QH":"an.yandex.ru",` + `"QT":"A",` + `"QC":"IN",` + `"CP":"",` + `"Answer":"` + ansStr + `",` + `"Result":{` + `"IsFiltered":true,` + `"Reason":3,` + `"ReverseHosts":["example.net"],` + `"IPList":["127.0.0.2"],` + `"Rules":[{"FilterListID":42,"Text":"||an.yandex.ru","IP":"127.0.0.2"},` + `{"FilterListID":43,"Text":"||an2.yandex.ru","IP":"127.0.0.3"}],` + `"CanonName":"example.com",` + `"ServiceName":"example.org",` + `"DNSRewriteResult":{"RCode":0,"Response":{"1":["127.0.0.2"]}}},` + `"Elapsed":837429}` ans, err := base64.StdEncoding.DecodeString(ansStr) require.NoError(t, err) want := &logEntry{ IP: net.IPv4(127, 0, 0, 1), Time: time.Date(2020, 11, 25, 15, 55, 56, 519796000, time.UTC), QHost: "an.yandex.ru", QType: "A", QClass: "IN", ClientID: "cli42", ClientProto: "", Answer: ans, Result: filtering.Result{ IsFiltered: true, Reason: filtering.FilteredBlockList, ReverseHosts: []string{"example.net"}, IPList: []net.IP{net.IPv4(127, 0, 0, 2)}, Rules: []*filtering.ResultRule{{ FilterListID: 42, Text: "||an.yandex.ru", IP: net.IPv4(127, 0, 0, 2), }, { FilterListID: 43, Text: "||an2.yandex.ru", IP: net.IPv4(127, 0, 0, 3), }}, CanonName: "example.com", ServiceName: "example.org", DNSRewriteResult: &filtering.DNSRewriteResult{ RCode: dns.RcodeSuccess, Response: filtering.DNSRewriteResultResponse{ dns.TypeA: []rules.RRValue{net.IPv4(127, 0, 0, 2)}, }, }, }, Elapsed: 837429, } got := &logEntry{} decodeLogEntry(got, data) s := logOutput.String() assert.Empty(t, s) // Correct for time zones. got.Time = got.Time.UTC() assert.Equal(t, want, got) }) testCases := []struct { name string log string want string }{{ name: "all_right_old_rule", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3,"Rule":"||an.yandex.","FilterID":1,"ReverseHosts":["example.com"],"IPList":["127.0.0.1"]},"Elapsed":837429}`, want: "", }, { name: "bad_filter_id_old_rule", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3,"FilterID":1.5},"Elapsed":837429}`, want: "decodeResult handler err: strconv.ParseInt: parsing \"1.5\": invalid syntax\n", }, { name: "bad_is_filtered", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":trooe,"Reason":3},"Elapsed":837429}`, want: "decodeLogEntry err: invalid character 'o' in literal true (expecting 'u')\n", }, { name: "bad_elapsed", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3},"Elapsed":-1}`, want: "", }, { name: "bad_ip", log: `{"IP":127001,"T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3},"Elapsed":837429}`, want: "", }, { name: "bad_time", log: `{"IP":"127.0.0.1","T":"12/09/1998T15:00:00.000000+05:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3},"Elapsed":837429}`, want: "decodeLogEntry handler err: parsing time \"12/09/1998T15:00:00.000000+05:00\" as \"2006-01-02T15:04:05Z07:00\": cannot parse \"9/1998T15:00:00.000000+05:00\" as \"2006\"\n", }, { name: "bad_host", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":6,"QT":"A","QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3},"Elapsed":837429}`, want: "", }, { name: "bad_type", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":true,"QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3},"Elapsed":837429}`, want: "", }, { name: "bad_class", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":false,"CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3},"Elapsed":837429}`, want: "", }, { name: "bad_client_proto", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":8,"Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3},"Elapsed":837429}`, want: "", }, { name: "very_bad_client_proto", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"dog","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3},"Elapsed":837429}`, want: "decodeLogEntry handler err: invalid client proto: \"dog\"\n", }, { name: "bad_answer", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"","Answer":0.9,"Result":{"IsFiltered":true,"Reason":3},"Elapsed":837429}`, want: "", }, { name: "very_bad_answer", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3},"Elapsed":837429}`, want: "decodeLogEntry handler err: illegal base64 data at input byte 61\n", }, { name: "bad_rule", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3,"Rule":false},"Elapsed":837429}`, want: "", }, { name: "bad_reason", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":true},"Elapsed":837429}`, want: "", }, { name: "bad_reverse_hosts", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3,"ReverseHosts":[{}]},"Elapsed":837429}`, want: "decodeResultReverseHosts: unexpected delim \"{\"\n", }, { name: "bad_ip_list", log: `{"IP":"127.0.0.1","T":"2020-11-25T18:55:56.519796+03:00","QH":"an.yandex.ru","QT":"A","QC":"IN","CP":"","Answer":"Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==","Result":{"IsFiltered":true,"Reason":3,"ReverseHosts":["example.net"],"IPList":[{}]},"Elapsed":837429}`, want: "decodeResultIPList: unexpected delim \"{\"\n", }} for _, tc := range testCases { t.Run(tc.name, func(t *testing.T) { l := &logEntry{} decodeLogEntry(l, tc.log) s := logOutput.String() if tc.want == "" { assert.Empty(t, s) } else { assert.True(t, strings.HasSuffix(s, tc.want), "got %q", s) } logOutput.Reset() }) } }