mirror of https://github.com/status-im/consul.git
228 lines
8.2 KiB
Go
228 lines
8.2 KiB
Go
package iptables
|
|
|
|
import (
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func TestSetup(t *testing.T) {
|
|
cases := []struct {
|
|
name string
|
|
cfg Config
|
|
expectedRules []string
|
|
}{
|
|
{
|
|
"no proxy outbound port provided",
|
|
Config{
|
|
ProxyUserID: "123",
|
|
ProxyInboundPort: 20000,
|
|
IptablesProvider: &fakeIptablesProvider{},
|
|
},
|
|
[]string{
|
|
"iptables -t nat -N CONSUL_PROXY_INBOUND",
|
|
"iptables -t nat -N CONSUL_PROXY_IN_REDIRECT",
|
|
"iptables -t nat -N CONSUL_PROXY_OUTPUT",
|
|
"iptables -t nat -N CONSUL_PROXY_REDIRECT",
|
|
"iptables -t nat -A CONSUL_PROXY_REDIRECT -p tcp -j REDIRECT --to-port 15001",
|
|
"iptables -t nat -A OUTPUT -p tcp -j CONSUL_PROXY_OUTPUT",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -m owner --uid-owner 123 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -d 127.0.0.1/32 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -j CONSUL_PROXY_REDIRECT",
|
|
"iptables -t nat -A CONSUL_PROXY_IN_REDIRECT -p tcp -j REDIRECT --to-port 20000",
|
|
"iptables -t nat -A PREROUTING -p tcp -j CONSUL_PROXY_INBOUND",
|
|
"iptables -t nat -A CONSUL_PROXY_INBOUND -p tcp -j CONSUL_PROXY_IN_REDIRECT",
|
|
},
|
|
},
|
|
{
|
|
"proxy outbound port is provided",
|
|
Config{
|
|
ProxyUserID: "123",
|
|
ProxyInboundPort: 20000,
|
|
ProxyOutboundPort: 21000,
|
|
IptablesProvider: &fakeIptablesProvider{},
|
|
},
|
|
[]string{
|
|
"iptables -t nat -N CONSUL_PROXY_INBOUND",
|
|
"iptables -t nat -N CONSUL_PROXY_IN_REDIRECT",
|
|
"iptables -t nat -N CONSUL_PROXY_OUTPUT",
|
|
"iptables -t nat -N CONSUL_PROXY_REDIRECT",
|
|
"iptables -t nat -A CONSUL_PROXY_REDIRECT -p tcp -j REDIRECT --to-port 21000",
|
|
"iptables -t nat -A OUTPUT -p tcp -j CONSUL_PROXY_OUTPUT",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -m owner --uid-owner 123 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -d 127.0.0.1/32 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -j CONSUL_PROXY_REDIRECT",
|
|
"iptables -t nat -A CONSUL_PROXY_IN_REDIRECT -p tcp -j REDIRECT --to-port 20000",
|
|
"iptables -t nat -A PREROUTING -p tcp -j CONSUL_PROXY_INBOUND",
|
|
"iptables -t nat -A CONSUL_PROXY_INBOUND -p tcp -j CONSUL_PROXY_IN_REDIRECT",
|
|
},
|
|
},
|
|
{
|
|
"exclude inbound ports is set",
|
|
Config{
|
|
ProxyUserID: "123",
|
|
ProxyInboundPort: 20000,
|
|
ProxyOutboundPort: 21000,
|
|
ExcludeInboundPorts: []string{"22000", "22500"},
|
|
IptablesProvider: &fakeIptablesProvider{},
|
|
},
|
|
[]string{
|
|
"iptables -t nat -N CONSUL_PROXY_INBOUND",
|
|
"iptables -t nat -N CONSUL_PROXY_IN_REDIRECT",
|
|
"iptables -t nat -N CONSUL_PROXY_OUTPUT",
|
|
"iptables -t nat -N CONSUL_PROXY_REDIRECT",
|
|
"iptables -t nat -A CONSUL_PROXY_REDIRECT -p tcp -j REDIRECT --to-port 21000",
|
|
"iptables -t nat -A OUTPUT -p tcp -j CONSUL_PROXY_OUTPUT",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -m owner --uid-owner 123 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -d 127.0.0.1/32 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -j CONSUL_PROXY_REDIRECT",
|
|
"iptables -t nat -A CONSUL_PROXY_IN_REDIRECT -p tcp -j REDIRECT --to-port 20000",
|
|
"iptables -t nat -A PREROUTING -p tcp -j CONSUL_PROXY_INBOUND",
|
|
"iptables -t nat -A CONSUL_PROXY_INBOUND -p tcp -j CONSUL_PROXY_IN_REDIRECT",
|
|
"iptables -t nat -I CONSUL_PROXY_INBOUND -p tcp --dport 22000 -j RETURN",
|
|
"iptables -t nat -I CONSUL_PROXY_INBOUND -p tcp --dport 22500 -j RETURN",
|
|
},
|
|
},
|
|
{
|
|
"exclude outbound ports is set",
|
|
Config{
|
|
ProxyUserID: "123",
|
|
ProxyInboundPort: 20000,
|
|
ProxyOutboundPort: 21000,
|
|
ExcludeOutboundPorts: []string{"22000", "22500"},
|
|
IptablesProvider: &fakeIptablesProvider{},
|
|
},
|
|
[]string{
|
|
"iptables -t nat -N CONSUL_PROXY_INBOUND",
|
|
"iptables -t nat -N CONSUL_PROXY_IN_REDIRECT",
|
|
"iptables -t nat -N CONSUL_PROXY_OUTPUT",
|
|
"iptables -t nat -N CONSUL_PROXY_REDIRECT",
|
|
"iptables -t nat -A CONSUL_PROXY_REDIRECT -p tcp -j REDIRECT --to-port 21000",
|
|
"iptables -t nat -A OUTPUT -p tcp -j CONSUL_PROXY_OUTPUT",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -m owner --uid-owner 123 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -d 127.0.0.1/32 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -j CONSUL_PROXY_REDIRECT",
|
|
"iptables -t nat -I CONSUL_PROXY_OUTPUT -p tcp --dport 22000 -j RETURN",
|
|
"iptables -t nat -I CONSUL_PROXY_OUTPUT -p tcp --dport 22500 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_IN_REDIRECT -p tcp -j REDIRECT --to-port 20000",
|
|
"iptables -t nat -A PREROUTING -p tcp -j CONSUL_PROXY_INBOUND",
|
|
"iptables -t nat -A CONSUL_PROXY_INBOUND -p tcp -j CONSUL_PROXY_IN_REDIRECT",
|
|
},
|
|
},
|
|
{
|
|
"exclude outbound CIDRs is set",
|
|
Config{
|
|
ProxyUserID: "123",
|
|
ProxyInboundPort: 20000,
|
|
ProxyOutboundPort: 21000,
|
|
ExcludeOutboundCIDRs: []string{"1.1.1.1", "2.2.2.2/24"},
|
|
IptablesProvider: &fakeIptablesProvider{},
|
|
},
|
|
[]string{
|
|
"iptables -t nat -N CONSUL_PROXY_INBOUND",
|
|
"iptables -t nat -N CONSUL_PROXY_IN_REDIRECT",
|
|
"iptables -t nat -N CONSUL_PROXY_OUTPUT",
|
|
"iptables -t nat -N CONSUL_PROXY_REDIRECT",
|
|
"iptables -t nat -A CONSUL_PROXY_REDIRECT -p tcp -j REDIRECT --to-port 21000",
|
|
"iptables -t nat -A OUTPUT -p tcp -j CONSUL_PROXY_OUTPUT",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -m owner --uid-owner 123 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -d 127.0.0.1/32 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -j CONSUL_PROXY_REDIRECT",
|
|
"iptables -t nat -I CONSUL_PROXY_OUTPUT -d 1.1.1.1 -j RETURN",
|
|
"iptables -t nat -I CONSUL_PROXY_OUTPUT -d 2.2.2.2/24 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_IN_REDIRECT -p tcp -j REDIRECT --to-port 20000",
|
|
"iptables -t nat -A PREROUTING -p tcp -j CONSUL_PROXY_INBOUND",
|
|
"iptables -t nat -A CONSUL_PROXY_INBOUND -p tcp -j CONSUL_PROXY_IN_REDIRECT",
|
|
},
|
|
},
|
|
{
|
|
"exclude UIDs is set",
|
|
Config{
|
|
ProxyUserID: "123",
|
|
ProxyInboundPort: 20000,
|
|
ProxyOutboundPort: 21000,
|
|
ExcludeUIDs: []string{"456", "789"},
|
|
IptablesProvider: &fakeIptablesProvider{},
|
|
},
|
|
[]string{
|
|
"iptables -t nat -N CONSUL_PROXY_INBOUND",
|
|
"iptables -t nat -N CONSUL_PROXY_IN_REDIRECT",
|
|
"iptables -t nat -N CONSUL_PROXY_OUTPUT",
|
|
"iptables -t nat -N CONSUL_PROXY_REDIRECT",
|
|
"iptables -t nat -A CONSUL_PROXY_REDIRECT -p tcp -j REDIRECT --to-port 21000",
|
|
"iptables -t nat -A OUTPUT -p tcp -j CONSUL_PROXY_OUTPUT",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -m owner --uid-owner 123 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -d 127.0.0.1/32 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_OUTPUT -j CONSUL_PROXY_REDIRECT",
|
|
"iptables -t nat -I CONSUL_PROXY_OUTPUT -m owner --uid-owner 456 -j RETURN",
|
|
"iptables -t nat -I CONSUL_PROXY_OUTPUT -m owner --uid-owner 789 -j RETURN",
|
|
"iptables -t nat -A CONSUL_PROXY_IN_REDIRECT -p tcp -j REDIRECT --to-port 20000",
|
|
"iptables -t nat -A PREROUTING -p tcp -j CONSUL_PROXY_INBOUND",
|
|
"iptables -t nat -A CONSUL_PROXY_INBOUND -p tcp -j CONSUL_PROXY_IN_REDIRECT",
|
|
},
|
|
},
|
|
}
|
|
|
|
for _, c := range cases {
|
|
t.Run(c.name, func(t *testing.T) {
|
|
err := Setup(c.cfg)
|
|
require.NoError(t, err)
|
|
require.Equal(t, c.expectedRules, c.cfg.IptablesProvider.Rules())
|
|
})
|
|
}
|
|
|
|
}
|
|
|
|
func TestSetup_errors(t *testing.T) {
|
|
cases := []struct {
|
|
name string
|
|
cfg Config
|
|
expErr string
|
|
}{
|
|
{
|
|
"no proxy UID",
|
|
Config{
|
|
IptablesProvider: &iptablesExecutor{},
|
|
},
|
|
"ProxyUserID is required to set up traffic redirection",
|
|
},
|
|
{
|
|
"no proxy inbound port",
|
|
Config{
|
|
ProxyUserID: "123",
|
|
ProxyOutboundPort: 21000,
|
|
IptablesProvider: &iptablesExecutor{},
|
|
},
|
|
"ProxyInboundPort is required to set up traffic redirection",
|
|
},
|
|
}
|
|
|
|
for _, c := range cases {
|
|
t.Run(c.name, func(t *testing.T) {
|
|
err := Setup(c.cfg)
|
|
require.EqualError(t, err, c.expErr)
|
|
})
|
|
}
|
|
}
|
|
|
|
type fakeIptablesProvider struct {
|
|
rules []string
|
|
}
|
|
|
|
func (f *fakeIptablesProvider) AddRule(name string, args ...string) {
|
|
var rule []string
|
|
rule = append(rule, name)
|
|
rule = append(rule, args...)
|
|
|
|
f.rules = append(f.rules, strings.Join(rule, " "))
|
|
}
|
|
|
|
func (f *fakeIptablesProvider) ApplyRules() error {
|
|
return nil
|
|
}
|
|
|
|
func (f *fakeIptablesProvider) Rules() []string {
|
|
return f.rules
|
|
}
|