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288 lines
7.0 KiB
288 lines
7.0 KiB
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package netutil
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import (
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"fmt"
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"math/rand"
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"net"
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"net/netip"
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"reflect"
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"testing"
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"testing/quick"
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"github.com/davecgh/go-spew/spew"
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)
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func TestParseNetlist(t *testing.T) {
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var tests = []struct {
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input string
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wantErr string
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wantList *Netlist
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}{
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{
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input: "",
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wantList: &Netlist{},
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},
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{
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input: "127.0.0.0/8",
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wantList: &Netlist{netip.MustParsePrefix("127.0.0.0/8")},
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},
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{
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input: "127.0.0.0/44",
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wantErr: `netip.ParsePrefix("127.0.0.0/44"): prefix length out of range`,
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},
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{
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input: "127.0.0.0/16, 23.23.23.23/24,",
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wantList: &Netlist{
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netip.MustParsePrefix("127.0.0.0/16"),
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netip.MustParsePrefix("23.23.23.23/24"),
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},
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},
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}
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for _, test := range tests {
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l, err := ParseNetlist(test.input)
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if err == nil && test.wantErr != "" {
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t.Errorf("%q: got no error, expected %q", test.input, test.wantErr)
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continue
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} else if err != nil && err.Error() != test.wantErr {
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t.Errorf("%q: got error %q, want %q", test.input, err, test.wantErr)
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continue
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}
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if !reflect.DeepEqual(l, test.wantList) {
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spew.Dump(l)
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spew.Dump(test.wantList)
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t.Errorf("%q: got %v, want %v", test.input, l, test.wantList)
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}
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}
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}
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func TestNilNetListContains(t *testing.T) {
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var list *Netlist
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checkContains(t, list.Contains, list.ContainsAddr, nil, []string{"1.2.3.4"})
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}
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func TestIsLAN(t *testing.T) {
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checkContains(t, IsLAN, AddrIsLAN,
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[]string{ // included
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"127.0.0.1",
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"10.0.1.1",
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"10.22.0.3",
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"172.31.252.251",
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"192.168.1.4",
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"fe80::f4a1:8eff:fec5:9d9d",
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"febf::ab32:2233",
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"fc00::4",
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// 4-in-6
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"::ffff:127.0.0.1",
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"::ffff:10.10.0.2",
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},
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[]string{ // excluded
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"192.0.2.1",
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"1.0.0.0",
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"172.32.0.1",
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"fec0::2233",
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// 4-in-6
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"::ffff:88.99.100.2",
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},
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)
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}
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func TestIsSpecialNetwork(t *testing.T) {
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checkContains(t, IsSpecialNetwork, AddrIsSpecialNetwork,
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[]string{ // included
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"0.0.0.0",
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"0.2.0.8",
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"192.0.2.1",
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"192.0.2.44",
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"2001:db8:85a3:8d3:1319:8a2e:370:7348",
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"255.255.255.255",
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"224.0.0.22", // IPv4 multicast
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"ff05::1:3", // IPv6 multicast
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// 4-in-6
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"::ffff:255.255.255.255",
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"::ffff:192.0.2.1",
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},
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[]string{ // excluded
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"192.0.3.1",
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"1.0.0.0",
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"172.32.0.1",
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"fec0::2233",
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},
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)
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}
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func checkContains(t *testing.T, fn func(net.IP) bool, fn2 func(netip.Addr) bool, inc, exc []string) {
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for _, s := range inc {
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if !fn(parseIP(s)) {
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t.Error("returned false for included net.IP", s)
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}
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if !fn2(netip.MustParseAddr(s)) {
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t.Error("returned false for included netip.Addr", s)
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}
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}
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for _, s := range exc {
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if fn(parseIP(s)) {
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t.Error("returned true for excluded net.IP", s)
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}
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if fn2(netip.MustParseAddr(s)) {
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t.Error("returned true for excluded netip.Addr", s)
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}
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}
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}
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func parseIP(s string) net.IP {
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ip := net.ParseIP(s)
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if ip == nil {
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panic("invalid " + s)
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}
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return ip
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}
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func TestCheckRelayIP(t *testing.T) {
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tests := []struct {
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sender, addr string
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want error
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}{
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{"127.0.0.1", "0.0.0.0", errUnspecified},
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{"192.168.0.1", "0.0.0.0", errUnspecified},
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{"23.55.1.242", "0.0.0.0", errUnspecified},
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{"127.0.0.1", "255.255.255.255", errSpecial},
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{"192.168.0.1", "255.255.255.255", errSpecial},
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{"23.55.1.242", "255.255.255.255", errSpecial},
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{"192.168.0.1", "127.0.2.19", errLoopback},
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{"23.55.1.242", "192.168.0.1", errLAN},
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{"127.0.0.1", "127.0.2.19", nil},
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{"127.0.0.1", "192.168.0.1", nil},
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{"127.0.0.1", "23.55.1.242", nil},
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{"192.168.0.1", "192.168.0.1", nil},
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{"192.168.0.1", "23.55.1.242", nil},
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{"23.55.1.242", "23.55.1.242", nil},
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}
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for _, test := range tests {
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err := CheckRelayIP(parseIP(test.sender), parseIP(test.addr))
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if err != test.want {
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t.Errorf("%s from %s: got %q, want %q", test.addr, test.sender, err, test.want)
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}
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}
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}
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func BenchmarkCheckRelayIP(b *testing.B) {
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sender := parseIP("23.55.1.242")
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addr := parseIP("23.55.1.2")
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for i := 0; i < b.N; i++ {
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CheckRelayIP(sender, addr)
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}
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}
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func TestSameNet(t *testing.T) {
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tests := []struct {
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ip, other string
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bits uint
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want bool
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}{
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{"0.0.0.0", "0.0.0.0", 32, true},
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{"0.0.0.0", "0.0.0.1", 0, true},
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{"0.0.0.0", "0.0.0.1", 31, true},
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{"0.0.0.0", "0.0.0.1", 32, false},
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{"0.33.0.1", "0.34.0.2", 8, true},
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{"0.33.0.1", "0.34.0.2", 13, true},
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{"0.33.0.1", "0.34.0.2", 15, false},
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}
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for _, test := range tests {
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if ok := SameNet(test.bits, parseIP(test.ip), parseIP(test.other)); ok != test.want {
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t.Errorf("SameNet(%d, %s, %s) == %t, want %t", test.bits, test.ip, test.other, ok, test.want)
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}
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}
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}
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func ExampleSameNet() {
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// This returns true because the IPs are in the same /24 network:
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fmt.Println(SameNet(24, net.IP{127, 0, 0, 1}, net.IP{127, 0, 0, 3}))
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// This call returns false:
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fmt.Println(SameNet(24, net.IP{127, 3, 0, 1}, net.IP{127, 5, 0, 3}))
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// Output:
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// true
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// false
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}
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func TestDistinctNetSet(t *testing.T) {
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ops := []struct {
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add, remove string
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fails bool
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}{
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{add: "127.0.0.1"},
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{add: "127.0.0.2"},
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{add: "127.0.0.3", fails: true},
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{add: "127.32.0.1"},
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{add: "127.32.0.2"},
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{add: "127.32.0.3", fails: true},
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{add: "127.33.0.1", fails: true},
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{add: "127.34.0.1"},
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{add: "127.34.0.2"},
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{add: "127.34.0.3", fails: true},
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// Make room for an address, then add again.
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{remove: "127.0.0.1"},
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{add: "127.0.0.3"},
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{add: "127.0.0.3", fails: true},
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}
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set := DistinctNetSet{Subnet: 15, Limit: 2}
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for _, op := range ops {
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var desc string
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if op.add != "" {
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desc = fmt.Sprintf("Add(%s)", op.add)
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if ok := set.Add(parseIP(op.add)); ok != !op.fails {
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t.Errorf("%s == %t, want %t", desc, ok, !op.fails)
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}
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} else {
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desc = fmt.Sprintf("Remove(%s)", op.remove)
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set.Remove(parseIP(op.remove))
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}
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t.Logf("%s: %v", desc, set)
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}
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}
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func TestDistinctNetSetAddRemove(t *testing.T) {
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cfg := &quick.Config{
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Values: func(s []reflect.Value, rng *rand.Rand) {
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slice := make([]netip.Addr, rng.Intn(20)+1)
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for i := range slice {
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slice[i] = RandomAddr(rng, false)
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}
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s[0] = reflect.ValueOf(slice)
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},
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}
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fn := func(ips []netip.Addr) bool {
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s := DistinctNetSet{Limit: 3, Subnet: 2}
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for _, ip := range ips {
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s.AddAddr(ip)
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}
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for _, ip := range ips {
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s.RemoveAddr(ip)
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}
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return s.Len() == 0
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}
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if err := quick.Check(fn, cfg); err != nil {
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t.Fatal(err)
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}
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}
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