mirror of
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205 lines
6.3 KiB
Go
205 lines
6.3 KiB
Go
package tcp
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import (
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"net"
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"os"
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"testing"
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"github.com/kr/pretty"
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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 TestIPMap(t *testing.T) {
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type testCaseExpect struct {
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expectNoMapping bool
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expectIdent string
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}
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type testCase struct {
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name string
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config map[string]string
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expectInitErr bool
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expect map[string]testCaseExpect
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}
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cases := []testCase{
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{
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name: "regular ips",
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expectInitErr: false,
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config: map[string]string{
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"192.168.123.234": "ident1",
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"192.168.20.23": "ident2",
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},
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expect: map[string]testCaseExpect{
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"192.168.123.234": {expectIdent: "ident1"},
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"192.168.20.23": {expectIdent: "ident2"},
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"192.168.20.10": {expectNoMapping: true},
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},
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},
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{
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name: "full wildcard",
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expectInitErr: false,
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config: map[string]string{
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"0.0.0.0/0": "*",
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"0::/0": "*",
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},
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expect: map[string]testCaseExpect{
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"10.123.234.24": {expectIdent: "10.123.234.24"},
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// '[' and ']' are forbiddenin dataset names
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"fe80::23:42": {expectIdent: "fe80::23:42"},
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},
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},
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{
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name: "longest prefix matching",
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expectInitErr: false,
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config: map[string]string{
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"10.1.2.3": "specific-host",
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"10.1.2.0/24": "subnet-one-two-*",
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"10.1.1.0/24": "subnet-one-one-*",
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"10.1.0.0/24": "subnet-one-zero-*",
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"10.1.0.0/16": "subnet-one-*",
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"fde4:8dba:82e1:1::1": "v6-48-1-specialhost",
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"fde4:8dba:82e1::/48": "v6-48-*",
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"fde4:8dba:82e1:1::/64": "v6-64-1-*",
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"fde4:8dba:82e1:2::/64": "v6-64-2-*",
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},
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expect: map[string]testCaseExpect{
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"10.1.2.3": {expectIdent: "specific-host"},
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"10.1.2.1": {expectIdent: "subnet-one-two-10.1.2.1"},
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"10.1.1.1": {expectIdent: "subnet-one-one-10.1.1.1"},
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"10.1.0.23": {expectIdent: "subnet-one-zero-10.1.0.23"},
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"10.1.3.1": {expectIdent: "subnet-one-10.1.3.1"},
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"10.2.1.1": {expectNoMapping: true},
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"fde4:8dba:82e1:1::1": {expectIdent: "v6-48-1-specialhost"},
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"fde4:8dba:82e1:23::1": {expectIdent: "v6-48-fde4:8dba:82e1:23::1"},
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"fde4:8dba:82e1:1::2": {expectIdent: "v6-64-1-fde4:8dba:82e1:1::2"},
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"fde4:8dba:82e1:2::1": {expectIdent: "v6-64-2-fde4:8dba:82e1:2::1"},
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"fde4:8dba:82e2::1": {expectNoMapping: true},
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},
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},
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{
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name: "different prefixes, mixed ipv4 ipv6, with interface ids",
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expectInitErr: false,
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config: map[string]string{
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"192.168.23.0/24": "db-*",
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"192.168.23.23": "db-twentythree",
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"192.168.42.0/24": "web-*",
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"10.1.4.0/24": "my-*-server",
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"2001:0db8:85a3:0000:0000:8a2e:0370:7334": "aspecifichost",
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"2001:0db8:85a3:0000:0000:8a2e:0370:7334%eth1": "aspecifichost",
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"fe80::/16%eth1": "san-*",
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"fde4:8dba:82e1::/64": "sub64-*",
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},
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expect: map[string]testCaseExpect{
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"10.1.2.3": {expectNoMapping: true},
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"192.168.23.1": {expectIdent: "db-192.168.23.1"},
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"192.168.23.23": {expectIdent: "db-twentythree"},
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"192.168.023.001": {expectIdent: "db-192.168.23.1"},
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"10.1.4.5": {expectIdent: "my-10.1.4.5-server"},
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// normalization
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"192.168.42.1": {expectIdent: "web-192.168.42.1"},
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"192.168.042.001": {expectIdent: "web-192.168.42.1"},
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// v6 matching
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"fe80::23:42%eth1": {expectIdent: "san-fe80::23:42-eth1"},
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"fe80::23:42%eth2": {expectNoMapping: true},
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// v6 subnet matching
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"fde4:8dba:82e1::1": {expectIdent: "sub64-fde4:8dba:82e1::1"},
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// v6 subnet matching with suffix that matches another allowed IPv4
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"fde4:8dba:82e1::c0a8:1717": {expectIdent: "sub64-fde4:8dba:82e1::c0a8:1717"},
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"2001:0db8:85a3:0000:0000:8a2e:0370:7334": {expectIdent: "aspecifichost"},
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"2001:0db8:85a3:0000:0000:8a2e:0370:7334%eth1": {expectIdent: "aspecifichost"},
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"2001:0db8:85a3:0000:0000:8a2e:0370:7334%eth2": {expectNoMapping: true},
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},
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},
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{
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name: "invalid user input: non ip or cidr",
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expectInitErr: true,
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config: map[string]string{
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"jimmy": "db",
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},
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},
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{
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name: "invalid user input: v4 ip with an identity containing *",
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expectInitErr: true,
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config: map[string]string{
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"192.168.1.2": "db-*",
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},
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},
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{
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name: "invalid user input: v4 subnet without an identity containing *",
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expectInitErr: true,
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config: map[string]string{
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"192.168.1.0/24": "db-",
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},
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},
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{
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name: "invalid user input: v6 ip with an identity containing *",
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expectInitErr: true,
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config: map[string]string{
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"2001:0db8:85a3:0000:0000:8a2e:0370:7334": "aspecifichost*",
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},
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},
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{
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name: "invalid user input: v6 subnet without identity containing *",
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expectInitErr: true,
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config: map[string]string{
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"fe80::/16%eth1": "db-",
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},
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},
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{
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name: "invalid user input with subnet match: client identity with forbidden zfs dataset name char @",
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expectInitErr: true,
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config: map[string]string{
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"fe80::/16": "db@-*",
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},
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},
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{
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name: "invalid user input with IP match: client identity with forbidden zfs dataset name char @",
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expectInitErr: true,
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config: map[string]string{
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"fe80::1": "db@foo",
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},
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},
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}
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for i := range cases {
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c := cases[i]
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t.Run(c.name, func(t *testing.T) {
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pretty.Fprintf(os.Stderr, "running %#v\n", c)
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m, err := ipMapFromConfig(c.config)
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if c.expectInitErr {
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require.Error(t, err)
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} else {
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require.NoError(t, err)
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require.NotNil(t, m)
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}
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for input, expect := range c.expect {
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// reuse newIPMapEntry to parse test case input
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// "test" is not used during testing but must not be empty.
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ipMapEntry, _ := newIPMapEntry(input, "test")
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ones, bits := ipMapEntry.subnet.Mask.Size()
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require.Equal(t, bits, net.IPv6len*8, "and we know ipMapEntry always expands its IPs to 16bytes")
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require.Equal(t, ones, net.IPv6len*8, "test case addresses must be fully specified")
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require.NotNil(t, ipMapEntry)
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ident, err := m.Get(&net.IPAddr{
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IP: ipMapEntry.subnet.IP,
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Zone: ipMapEntry.zone,
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})
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if expect.expectNoMapping {
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assert.Empty(t, ident)
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} else {
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assert.NoError(t, err)
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assert.Equal(t, expect.expectIdent, ident)
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}
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}
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})
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}
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}
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func TestPackageNetAssumptions(t *testing.T) {
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}
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