317 lines
11 KiB
Go
317 lines
11 KiB
Go
package querylog
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import (
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"bytes"
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"encoding/base64"
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"net"
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"strings"
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"testing"
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"time"
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"github.com/AdguardTeam/AdGuardHome/internal/aghtest"
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"github.com/AdguardTeam/AdGuardHome/internal/filtering"
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"github.com/AdguardTeam/golibs/log"
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"github.com/AdguardTeam/urlfilter/rules"
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"github.com/miekg/dns"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestDecodeLogEntry(t *testing.T) {
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logOutput := &bytes.Buffer{}
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aghtest.ReplaceLogWriter(t, logOutput)
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aghtest.ReplaceLogLevel(t, log.DEBUG)
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t.Run("success", func(t *testing.T) {
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const ansStr = `Qz+BgAABAAEAAAAAAmFuBnlhbmRleAJydQAAAQABwAwAAQABAAAACgAEAAAAAA==`
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const data = `{"IP":"127.0.0.1",` +
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`"CID":"cli42",` +
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`"T":"2020-11-25T18:55:56.519796+03:00",` +
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`"QH":"an.yandex.ru",` +
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`"QT":"A",` +
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`"QC":"IN",` +
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`"CP":"",` +
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`"Answer":"` + ansStr + `",` +
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`"Cached":true,` +
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`"Result":{` +
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`"IsFiltered":true,` +
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`"Reason":3,` +
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`"IPList":["127.0.0.2"],` +
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`"Rules":[{"FilterListID":42,"Text":"||an.yandex.ru","IP":"127.0.0.2"},` +
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`{"FilterListID":43,"Text":"||an2.yandex.ru","IP":"127.0.0.3"}],` +
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`"CanonName":"example.com",` +
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`"ServiceName":"example.org",` +
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`"DNSRewriteResult":{"RCode":0,"Response":{"1":["127.0.0.2"]}}},` +
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`"Upstream":"https://some.upstream",` +
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`"Elapsed":837429}`
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ans, err := base64.StdEncoding.DecodeString(ansStr)
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require.NoError(t, err)
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want := &logEntry{
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IP: net.IPv4(127, 0, 0, 1),
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Time: time.Date(2020, 11, 25, 15, 55, 56, 519796000, time.UTC),
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QHost: "an.yandex.ru",
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QType: "A",
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QClass: "IN",
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ClientID: "cli42",
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ClientProto: "",
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Answer: ans,
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Cached: true,
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Result: filtering.Result{
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IsFiltered: true,
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Reason: filtering.FilteredBlockList,
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IPList: []net.IP{net.IPv4(127, 0, 0, 2)},
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Rules: []*filtering.ResultRule{{
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FilterListID: 42,
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Text: "||an.yandex.ru",
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IP: net.IPv4(127, 0, 0, 2),
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}, {
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FilterListID: 43,
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Text: "||an2.yandex.ru",
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IP: net.IPv4(127, 0, 0, 3),
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}},
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CanonName: "example.com",
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ServiceName: "example.org",
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DNSRewriteResult: &filtering.DNSRewriteResult{
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RCode: dns.RcodeSuccess,
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Response: filtering.DNSRewriteResultResponse{
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dns.TypeA: []rules.RRValue{net.IPv4(127, 0, 0, 2)},
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},
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},
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},
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Upstream: "https://some.upstream",
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Elapsed: 837429,
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}
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got := &logEntry{}
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decodeLogEntry(got, data)
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s := logOutput.String()
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assert.Empty(t, s)
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// Correct for time zones.
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got.Time = got.Time.UTC()
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assert.Equal(t, want, got)
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})
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testCases := []struct {
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name string
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log string
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want string
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}{{
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name: "all_right_old_rule",
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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}`,
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want: "",
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}, {
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name: "bad_filter_id_old_rule",
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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}`,
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want: "decodeResult handler err: strconv.ParseInt: parsing \"1.5\": invalid syntax\n",
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}, {
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name: "bad_is_filtered",
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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}`,
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want: "decodeLogEntry err: invalid character 'o' in literal true (expecting 'u')\n",
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}, {
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name: "bad_elapsed",
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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}`,
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want: "",
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}, {
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name: "bad_ip",
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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}`,
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want: "",
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}, {
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name: "bad_time",
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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}`,
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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",
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}, {
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name: "bad_host",
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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}`,
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want: "",
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}, {
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name: "bad_type",
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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}`,
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want: "",
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}, {
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name: "bad_class",
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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}`,
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want: "",
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}, {
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name: "bad_client_proto",
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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}`,
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want: "",
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}, {
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name: "very_bad_client_proto",
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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}`,
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want: "decodeLogEntry handler err: invalid client proto: \"dog\"\n",
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}, {
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name: "bad_answer",
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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}`,
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want: "",
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}, {
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name: "very_bad_answer",
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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}`,
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want: "decodeLogEntry handler err: illegal base64 data at input byte 61\n",
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}, {
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name: "bad_rule",
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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}`,
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want: "",
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}, {
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name: "bad_reason",
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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}`,
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want: "",
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}, {
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name: "bad_reverse_hosts",
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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}`,
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want: "decodeResultReverseHosts: unexpected delim \"{\"\n",
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}, {
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name: "bad_ip_list",
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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}`,
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want: "decodeResultIPList: unexpected delim \"{\"\n",
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}}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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decodeLogEntry(new(logEntry), tc.log)
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s := logOutput.String()
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if tc.want == "" {
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assert.Empty(t, s)
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} else {
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assert.True(t, strings.HasSuffix(s, tc.want),
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"got %q", s)
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}
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logOutput.Reset()
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})
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}
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}
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func TestDecodeLogEntry_backwardCompatability(t *testing.T) {
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var (
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a1, a2 = net.IP{127, 0, 0, 1}.To16(), net.IP{127, 0, 0, 2}.To16()
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aaaa1, aaaa2 = net.ParseIP("::1"), net.ParseIP("::2")
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)
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testCases := []struct {
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want *logEntry
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entry string
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name string
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}{{
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entry: `{"Result":{"ReverseHosts":["example.net","example.org"]}`,
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want: &logEntry{
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Result: filtering.Result{DNSRewriteResult: &filtering.DNSRewriteResult{
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RCode: dns.RcodeSuccess,
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Response: filtering.DNSRewriteResultResponse{
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dns.TypePTR: []rules.RRValue{"example.net.", "example.org."},
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},
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}},
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},
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name: "reverse_hosts",
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}, {
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entry: `{"Result":{"IPList":["127.0.0.1","127.0.0.2","::1","::2"],"Reason":10}}`,
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want: &logEntry{
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Result: filtering.Result{
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DNSRewriteResult: &filtering.DNSRewriteResult{
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RCode: dns.RcodeSuccess,
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Response: filtering.DNSRewriteResultResponse{
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dns.TypeA: []rules.RRValue{a1, a2},
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dns.TypeAAAA: []rules.RRValue{aaaa1, aaaa2},
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},
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},
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Reason: filtering.RewrittenAutoHosts,
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},
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},
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name: "iplist_autohosts",
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}, {
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entry: `{"Result":{"IPList":["127.0.0.1","127.0.0.2","::1","::2"],"Reason":9}}`,
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want: &logEntry{
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Result: filtering.Result{
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IPList: []net.IP{
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a1,
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a2,
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aaaa1,
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aaaa2,
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},
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Reason: filtering.Rewritten,
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},
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},
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name: "iplist_rewritten",
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}}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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e := &logEntry{}
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decodeLogEntry(e, tc.entry)
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assert.Equal(t, tc.want, e)
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})
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}
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}
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// anonymizeIPSlow masks ip to anonymize the client if the ip is a valid one.
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// It only exists in purposes of benchmark comparison, see BenchmarkAnonymizeIP.
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func anonymizeIPSlow(ip net.IP) {
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if ip4 := ip.To4(); ip4 != nil {
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copy(ip4[net.IPv4len-2:net.IPv4len], []byte{0, 0})
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} else if len(ip) == net.IPv6len {
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copy(ip[net.IPv6len-10:net.IPv6len], []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
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}
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}
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func BenchmarkAnonymizeIP(b *testing.B) {
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benchCases := []struct {
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name string
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ip net.IP
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want net.IP
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}{{
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name: "v4",
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ip: net.IP{1, 2, 3, 4},
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want: net.IP{1, 2, 0, 0},
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}, {
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name: "v4_mapped",
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ip: net.IP{1, 2, 3, 4}.To16(),
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want: net.IP{1, 2, 0, 0}.To16(),
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}, {
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name: "v6",
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ip: net.IP{
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0xa, 0xb, 0x0, 0x0,
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0x0, 0xb, 0xa, 0x9,
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0x8, 0x7, 0x6, 0x5,
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0x4, 0x3, 0x2, 0x1,
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},
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want: net.IP{
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0xa, 0xb, 0x0, 0x0,
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0x0, 0xb, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0,
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},
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}, {
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name: "invalid",
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ip: net.IP{1, 2, 3},
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want: net.IP{1, 2, 3},
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}}
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for _, bc := range benchCases {
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b.Run(bc.name, func(b *testing.B) {
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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AnonymizeIP(bc.ip)
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}
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assert.Equal(b, bc.want, bc.ip)
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})
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b.Run(bc.name+"_slow", func(b *testing.B) {
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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anonymizeIPSlow(bc.ip)
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}
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assert.Equal(b, bc.want, bc.ip)
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})
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}
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}
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