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tree_test.go
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package mmdbwriter
import (
"bytes"
"fmt"
"io/ioutil"
"math/big"
"net"
"os"
"testing"
"time"
"github.com/maxmind/mmdbwriter/inserter"
"github.com/maxmind/mmdbwriter/mmdbtype"
"github.com/oschwald/maxminddb-golang"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type testInsert struct {
network string
start string
end string
value mmdbtype.DataType
}
type testInsertError struct {
network string
start string
end string
value mmdbtype.DataType
expectedErrorMsg string
}
type testGet struct {
ip string
expectedNetwork string
expectedGetValue mmdbtype.DataType
expectedLookupValue *interface{}
}
func TestTreeInsertAndGet(t *testing.T) {
bigInt := big.Int{}
bigInt.SetString("1329227995784915872903807060280344576", 10)
uint128 := mmdbtype.Uint128(bigInt)
var allTypesGetSubmap mmdbtype.DataType = mmdbtype.Map{
"mapX": mmdbtype.Map{
"arrayX": mmdbtype.Slice{
mmdbtype.Uint64(0x7),
mmdbtype.Uint64(0x8),
mmdbtype.Uint64(0x9),
},
"utf8_stringX": mmdbtype.String("hello"),
},
}
var allTypesGetRecord mmdbtype.DataType = mmdbtype.Map{
"array": mmdbtype.Slice{
mmdbtype.Uint64(1),
mmdbtype.Uint64(2),
mmdbtype.Uint64(3),
},
"boolean": mmdbtype.Bool(true),
"bytes": mmdbtype.Bytes{
0x0,
0x0,
0x0,
0x2a,
},
"double": mmdbtype.Float64(42.123456),
"float": mmdbtype.Float32(1.1),
"int32": mmdbtype.Int32(-268435456),
"map": allTypesGetSubmap,
"uint128": &uint128,
"uint16": mmdbtype.Uint64(0x64),
"uint32": mmdbtype.Uint64(0x10000000),
"uint64": mmdbtype.Uint64(0x1000000000000000),
"utf8_string": mmdbtype.String("unicode! ☯ - ♫"),
}
var allTypesLookupSubmap interface{} = map[string]interface{}{
"mapX": map[string]interface{}{
"arrayX": []interface{}{
uint64(0x7),
uint64(0x8),
uint64(0x9),
},
"utf8_stringX": "hello",
},
}
var allTypesLookupRecord interface{} = map[string]interface{}{
"array": []interface{}{
uint64(1),
uint64(2),
uint64(3),
},
"boolean": true,
"bytes": []uint8{
0x0,
0x0,
0x0,
0x2a,
},
"double": 42.123456,
"float": float32(1.1),
"int32": -268435456,
"map": allTypesLookupSubmap,
"uint128": &bigInt,
"uint16": uint64(0x64),
"uint32": uint64(0x10000000),
"uint64": uint64(0x1000000000000000),
"utf8_string": "unicode! ☯ - ♫",
}
tests := []struct {
name string
disableIPv4Aliasing bool
includeReservedNetworks bool
insertType string // "net" or "range or "" for both.
inserts []testInsert
insertErrors []testInsertError
gets []testGet
expectedNodeCount int
}{
{
name: "::/0 insert",
disableIPv4Aliasing: true,
includeReservedNetworks: true,
inserts: []testInsert{
{
network: "::/0",
start: "::",
end: "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
value: mmdbtype.String("string"),
},
},
gets: []testGet{
{
ip: "8.1.1.0",
expectedNetwork: "::/1",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
{
ip: "8000::",
expectedNetwork: "8000::/1",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
},
expectedNodeCount: 1,
},
{
name: "::/1 insert, IPv4 lookup",
includeReservedNetworks: true,
inserts: []testInsert{
{
network: "::/1",
start: "::",
end: "7fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
value: mmdbtype.String("string"),
},
},
gets: []testGet{
{
ip: "1.1.1.1",
expectedNetwork: "0.0.0.0/1",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
},
expectedNodeCount: 142,
},
{
name: "8000::/1 insert",
includeReservedNetworks: true,
inserts: []testInsert{
{
network: "8000::/1",
start: "8000::",
end: "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
value: mmdbtype.String("string"),
},
},
gets: []testGet{
{
ip: "8000::",
expectedNetwork: "8000::/1",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
},
expectedNodeCount: 142,
},
{
name: "overwriting smaller network with bigger network",
includeReservedNetworks: true,
inserts: []testInsert{
{
network: "2003:1000::/32",
start: "2003:1000::",
end: "2003:1000:ffff:ffff:ffff:ffff:ffff:ffff",
value: mmdbtype.String("string"),
},
{
network: "2003::/16",
start: "2003::",
end: "2003:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
value: mmdbtype.String("new string"),
},
},
gets: []testGet{
{
ip: "2003::",
expectedNetwork: "2003::/16",
expectedGetValue: mmdbtype.String("new string"),
expectedLookupValue: s2ip("new string"),
},
{
ip: "2003:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
expectedNetwork: "2003::/16",
expectedGetValue: mmdbtype.String("new string"),
expectedLookupValue: s2ip("new string"),
},
},
expectedNodeCount: 142,
},
{
name: "insert smaller network into bigger network",
includeReservedNetworks: true,
inserts: []testInsert{
{
network: "2003::/16",
start: "2003::",
end: "2003:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
value: mmdbtype.String("string"),
},
{
network: "2003:1000::/32",
start: "2003:1000::",
end: "2003:1000:ffff:ffff:ffff:ffff:ffff:ffff",
value: mmdbtype.String("new string"),
},
},
gets: []testGet{
{
ip: "2003::",
expectedNetwork: "2003::/20",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
{
ip: "2003:1000::",
expectedNetwork: "2003:1000::/32",
expectedGetValue: mmdbtype.String("new string"),
expectedLookupValue: s2ip("new string"),
},
{
ip: "2003:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
expectedNetwork: "2003:8000::/17",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
},
expectedNodeCount: 158,
},
{
name: "inserting IPv4 address in IPv6 tree, without aliasing",
disableIPv4Aliasing: true,
includeReservedNetworks: true,
inserts: []testInsert{
{
network: "1.1.1.1/32",
start: "1.1.1.1",
end: "1.1.1.1",
value: mmdbtype.String("string"),
},
},
gets: []testGet{
{
ip: "1.1.1.1",
expectedNetwork: "1.1.1.1/32",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
{
ip: "::1.1.1.1",
expectedNetwork: "::101:101/128",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
{
// The IPv4 network should not be aliased
ip: "2002:100:100::",
expectedNetwork: "2000::/3",
},
},
expectedNodeCount: 128,
},
{
name: "reserved and aliased networks",
inserts: []testInsert{
{
network: "::/1",
start: "::",
end: "7fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
value: mmdbtype.String("string"),
},
},
insertErrors: []testInsertError{
{
network: "10.0.0.0/8",
start: "10.0.0.0",
end: "10.255.255.255",
expectedErrorMsg: "attempt to insert ::a00:0/104, which is in a reserved network",
},
{
network: "10.0.0.1/32",
start: "10.0.0.1",
end: "10.0.0.1",
expectedErrorMsg: "attempt to insert ::a00:1/128, which is in a reserved network",
},
{
network: "2002:100::/24",
start: "2002:100::",
end: "2002:1ff:ffff:ffff:ffff:ffff:ffff:ffff",
expectedErrorMsg: "attempt to insert 2002:100::/24, which is in an aliased network",
},
},
gets: []testGet{
{
ip: "1.1.1.1",
expectedNetwork: "1.0.0.0/8",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
{
// This is within a reserved network
ip: "203.0.113.0",
expectedNetwork: "203.0.113.0/24",
},
{
// This is in an aliased network
ip: "2002:100:100::",
expectedNetwork: "2002:100::/24",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
},
expectedNodeCount: 352,
},
{
name: "all types and pointers",
inserts: []testInsert{
{
network: "1.1.1.0/24",
start: "1.1.1.0",
end: "1.1.1.255",
value: allTypesGetSubmap,
},
{
network: "1.1.2.0/24",
start: "1.1.2.0",
end: "1.1.2.255",
value: allTypesGetRecord,
},
},
gets: []testGet{
{
ip: "1.1.1.0",
expectedNetwork: "1.1.1.0/24",
expectedGetValue: allTypesGetSubmap,
expectedLookupValue: &allTypesLookupSubmap,
},
{
ip: "1.1.2.128",
expectedNetwork: "1.1.2.0/24",
expectedGetValue: allTypesGetRecord,
expectedLookupValue: &allTypesLookupRecord,
},
},
expectedNodeCount: 369,
},
{
name: "node pruning",
inserts: []testInsert{
{
network: "1.1.0.0/24",
start: "1.1.0.0",
end: "1.1.0.255",
value: mmdbtype.Map{"a": mmdbtype.Slice{mmdbtype.Uint64(1), mmdbtype.Bytes{1, 2}}},
},
{
network: "1.1.1.0/24",
start: "1.1.1.0",
end: "1.1.1.255",
// We intentionally don't use the same variable for
// here and above as we want them to be different instances.
value: mmdbtype.Map{"a": mmdbtype.Slice{mmdbtype.Uint64(1), mmdbtype.Bytes{1, 2}}},
},
},
gets: []testGet{
{
ip: "1.1.0.0",
expectedNetwork: "1.1.0.0/23",
expectedGetValue: mmdbtype.Map{"a": mmdbtype.Slice{mmdbtype.Uint64(1), mmdbtype.Bytes{1, 2}}},
expectedLookupValue: func() *interface{} {
v := interface{}(map[string]interface{}{"a": []interface{}{uint64(1), []byte{1, 2}}})
return &v
}(),
},
},
expectedNodeCount: 367,
},
{
name: "insertion of range with multiple subnets",
insertType: "range",
inserts: []testInsert{
{
start: "1.1.1.0",
end: "1.1.1.6",
value: mmdbtype.String("string"),
},
},
gets: []testGet{
{
ip: "1.1.1.0",
expectedNetwork: "1.1.1.0/30",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
{
ip: "1.1.1.1",
expectedNetwork: "1.1.1.0/30",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
{
ip: "1.1.1.2",
expectedNetwork: "1.1.1.0/30",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
{
ip: "1.1.1.3",
expectedNetwork: "1.1.1.0/30",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
{
ip: "1.1.1.4",
expectedNetwork: "1.1.1.4/31",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
{
ip: "1.1.1.5",
expectedNetwork: "1.1.1.4/31",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
{
ip: "1.1.1.6",
expectedNetwork: "1.1.1.6/32",
expectedGetValue: mmdbtype.String("string"),
expectedLookupValue: s2ip("string"),
},
},
expectedNodeCount: 376,
},
}
for _, recordSize := range []int{24, 28, 32} {
t.Run(fmt.Sprintf("Record Size: %d", recordSize), func(t *testing.T) {
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
epoch := time.Now().Unix()
tree, err := New(
Options{
BuildEpoch: epoch,
DatabaseType: "mmdbwriter-test",
Description: map[string]string{"en": "Test database"},
DisableIPv4Aliasing: test.disableIPv4Aliasing,
IncludeReservedNetworks: test.includeReservedNetworks,
RecordSize: recordSize,
},
)
require.NoError(t, err)
if test.insertType == "" || test.insertType == "net" {
for _, insert := range test.inserts {
_, network, err := net.ParseCIDR(insert.network)
require.NoError(t, err)
require.NoError(t, tree.Insert(network, insert.value))
}
for _, insert := range test.insertErrors {
_, network, err := net.ParseCIDR(insert.network)
require.NoError(t, err)
err = tree.Insert(network, insert.value)
assert.EqualError(t, err, insert.expectedErrorMsg)
}
} else if test.insertType == "" || test.insertType == "range" {
for _, insert := range test.inserts {
start := net.ParseIP(insert.start)
require.NotNil(t, start)
end := net.ParseIP(insert.end)
require.NotNil(t, end)
require.NoError(t, tree.InsertRange(start, end, insert.value))
}
for _, insert := range test.insertErrors {
start := net.ParseIP(insert.start)
require.NotNil(t, start)
end := net.ParseIP(insert.end)
require.NotNil(t, end)
err = tree.InsertRange(start, end, insert.value)
assert.EqualError(t, err, insert.expectedErrorMsg)
}
}
tree.finalize()
for _, get := range test.gets {
network, value := tree.Get(net.ParseIP(get.ip))
assert.Equal(t, get.expectedNetwork, network.String(), "network for %s", get.ip)
assert.Equal(t, get.expectedGetValue, value, "value for %s", get.ip)
}
assert.Equal(t, test.expectedNodeCount, tree.nodeCount)
buf := &bytes.Buffer{}
numBytes, err := tree.WriteTo(buf)
require.NoError(t, err)
checkMMDB(t, buf, test.gets, "MMDB lookups on New tree")
assert.Equal(t, int64(buf.Len()), numBytes, "number of bytes")
f, err := ioutil.TempFile("", "mmdbwriter")
require.NoError(t, err)
defer func() { require.NoError(t, os.Remove(f.Name())) }()
bufBytes := buf.Bytes()
_, err = f.Write(bufBytes)
require.NoError(t, err)
require.NoError(t, f.Close())
loadBuf := &bytes.Buffer{}
tree, err = Load(f.Name(),
Options{
BuildEpoch: epoch,
DisableIPv4Aliasing: test.disableIPv4Aliasing,
IncludeReservedNetworks: test.includeReservedNetworks,
},
)
require.NoError(t, err)
_, err = tree.WriteTo(loadBuf)
require.NoError(t, err)
checkMMDB(t, loadBuf, test.gets, "MMDB lookups on Load tree")
assert.Equal(t, bufBytes, loadBuf.Bytes(), "Load + WriteTo generates an identical database")
})
}
})
}
}
func checkMMDB(t *testing.T, buf *bytes.Buffer, gets []testGet, name string) {
t.Run(name, func(t *testing.T) {
reader, err := maxminddb.FromBytes(buf.Bytes())
require.NoError(t, err)
defer reader.Close()
for _, get := range gets {
var v interface{}
network, ok, err := reader.LookupNetwork(net.ParseIP(get.ip), &v)
require.NoError(t, err)
assert.Equal(t, get.expectedNetwork, network.String(), "network for %s in database", get.ip)
if get.expectedLookupValue == nil {
assert.False(t, ok, "%s is not in the database", get.ip)
} else {
assert.Equal(t, *get.expectedLookupValue, v, "value for %s in database", get.ip)
}
}
assert.NoError(t, reader.Verify(), "verify database format")
})
}
// This test case exists to test a bug that we experienced where a value
// could reappear on a later insert after being removed from the record.
// This happened as we were only changing the record type and not
// removing the underlying data.
func TestInsertFunc_RemovalAndLaterInsert(t *testing.T) {
tree, err := New(
Options{},
)
require.NoError(t, err)
_, network, err := net.ParseCIDR("::1.1.1.0/120")
require.NoError(t, err)
value := mmdbtype.String("value")
require.NoError(t, tree.Insert(network, value))
ip := net.ParseIP("::1.1.1.1")
recNetwork, recValue := tree.Get(ip)
assert.Equal(t, network, recNetwork)
assert.Equal(t, value, recValue)
_, removedNetwork, err := net.ParseCIDR("::1.1.1.1/128")
require.NoError(t, err)
err = tree.InsertFunc(
removedNetwork,
inserter.Remove,
)
require.NoError(t, err)
recNetwork, recValue = tree.Get(ip)
assert.Equal(t, removedNetwork, recNetwork)
assert.Nil(t, recValue)
err = tree.InsertFunc(
removedNetwork,
func(v mmdbtype.DataType) (mmdbtype.DataType, error) {
return v, nil
},
)
require.NoError(t, err)
recNetwork, recValue = tree.Get(ip)
assert.Equal(t, removedNetwork, recNetwork)
assert.Nil(t, recValue)
}
func s2ip(v string) *interface{} {
i := interface{}(v)
return &i
}