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package nebula
import (
"net"
"regexp"
"testing"
"github.com/slackhq/nebula/cidr"
"github.com/slackhq/nebula/config"
"github.com/slackhq/nebula/test"
"github.com/stretchr/testify/assert"
)
func TestNewAllowListFromConfig(t *testing.T) {
l := test.NewLogger()
c := config.NewC(l)
c.Settings["allowlist"] = map[interface{}]interface{}{
"192.168.0.0": true,
}
r, err := newAllowListFromConfig(c, "allowlist", nil)
assert.EqualError(t, err, "config `allowlist` has invalid CIDR: 192.168.0.0")
assert.Nil(t, r)
c.Settings["allowlist"] = map[interface{}]interface{}{
"192.168.0.0/16": "abc",
}
r, err = newAllowListFromConfig(c, "allowlist", nil)
assert.EqualError(t, err, "config `allowlist` has invalid value (type string): abc")
c.Settings["allowlist"] = map[interface{}]interface{}{
"192.168.0.0/16": true,
"10.0.0.0/8": false,
}
r, err = newAllowListFromConfig(c, "allowlist", nil)
assert.EqualError(t, err, "config `allowlist` contains both true and false rules, but no default set for 0.0.0.0/0")
c.Settings["allowlist"] = map[interface{}]interface{}{
"0.0.0.0/0": true,
"10.0.0.0/8": false,
"10.42.42.0/24": true,
"fd00::/8": true,
"fd00:fd00::/16": false,
}
r, err = newAllowListFromConfig(c, "allowlist", nil)
assert.EqualError(t, err, "config `allowlist` contains both true and false rules, but no default set for ::/0")
c.Settings["allowlist"] = map[interface{}]interface{}{
"0.0.0.0/0": true,
"10.0.0.0/8": false,
"10.42.42.0/24": true,
}
r, err = newAllowListFromConfig(c, "allowlist", nil)
if assert.NoError(t, err) {
assert.NotNil(t, r)
}
c.Settings["allowlist"] = map[interface{}]interface{}{
"0.0.0.0/0": true,
"10.0.0.0/8": false,
"10.42.42.0/24": true,
"::/0": false,
"fd00::/8": true,
"fd00:fd00::/16": false,
}
r, err = newAllowListFromConfig(c, "allowlist", nil)
if assert.NoError(t, err) {
assert.NotNil(t, r)
}
// Test interface names
c.Settings["allowlist"] = map[interface{}]interface{}{
"interfaces": map[interface{}]interface{}{
`docker.*`: "foo",
},
}
lr, err := NewLocalAllowListFromConfig(c, "allowlist")
assert.EqualError(t, err, "config `allowlist.interfaces` has invalid value (type string): foo")
c.Settings["allowlist"] = map[interface{}]interface{}{
"interfaces": map[interface{}]interface{}{
`docker.*`: false,
`eth.*`: true,
},
}
lr, err = NewLocalAllowListFromConfig(c, "allowlist")
assert.EqualError(t, err, "config `allowlist.interfaces` values must all be the same true/false value")
c.Settings["allowlist"] = map[interface{}]interface{}{
"interfaces": map[interface{}]interface{}{
`docker.*`: false,
},
}
lr, err = NewLocalAllowListFromConfig(c, "allowlist")
if assert.NoError(t, err) {
assert.NotNil(t, lr)
}
}
func TestAllowList_Allow(t *testing.T) {
assert.Equal(t, true, ((*AllowList)(nil)).Allow(net.ParseIP("1.1.1.1")))
tree := cidr.NewTree6[bool]()
tree.AddCIDR(cidr.Parse("0.0.0.0/0"), true)
tree.AddCIDR(cidr.Parse("10.0.0.0/8"), false)
tree.AddCIDR(cidr.Parse("10.42.42.42/32"), true)
tree.AddCIDR(cidr.Parse("10.42.0.0/16"), true)
tree.AddCIDR(cidr.Parse("10.42.42.0/24"), true)
tree.AddCIDR(cidr.Parse("10.42.42.0/24"), false)
tree.AddCIDR(cidr.Parse("::1/128"), true)
tree.AddCIDR(cidr.Parse("::2/128"), false)
al := &AllowList{cidrTree: tree}
assert.Equal(t, true, al.Allow(net.ParseIP("1.1.1.1")))
assert.Equal(t, false, al.Allow(net.ParseIP("10.0.0.4")))
assert.Equal(t, true, al.Allow(net.ParseIP("10.42.42.42")))
assert.Equal(t, false, al.Allow(net.ParseIP("10.42.42.41")))
assert.Equal(t, true, al.Allow(net.ParseIP("10.42.0.1")))
assert.Equal(t, true, al.Allow(net.ParseIP("::1")))
assert.Equal(t, false, al.Allow(net.ParseIP("::2")))
}
func TestLocalAllowList_AllowName(t *testing.T) {
assert.Equal(t, true, ((*LocalAllowList)(nil)).AllowName("docker0"))
rules := []AllowListNameRule{
{Name: regexp.MustCompile("^docker.*$"), Allow: false},
{Name: regexp.MustCompile("^tun.*$"), Allow: false},
}
al := &LocalAllowList{nameRules: rules}
assert.Equal(t, false, al.AllowName("docker0"))
assert.Equal(t, false, al.AllowName("tun0"))
assert.Equal(t, true, al.AllowName("eth0"))
rules = []AllowListNameRule{
{Name: regexp.MustCompile("^eth.*$"), Allow: true},
{Name: regexp.MustCompile("^ens.*$"), Allow: true},
}
al = &LocalAllowList{nameRules: rules}
assert.Equal(t, false, al.AllowName("docker0"))
assert.Equal(t, true, al.AllowName("eth0"))
assert.Equal(t, true, al.AllowName("ens5"))
}
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