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checker_test.go
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package ip
import (
"net"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestIsAuthorized(t *testing.T) {
testCases := []struct {
desc string
whiteList []string
remoteAddr string
authorized bool
}{
{
desc: "remoteAddr not in range",
whiteList: []string{"1.2.3.4/24"},
remoteAddr: "10.2.3.1:123",
authorized: false,
},
{
desc: "remoteAddr in range",
whiteList: []string{"1.2.3.4/24"},
remoteAddr: "1.2.3.1:123",
authorized: true,
},
}
for _, test := range testCases {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
ipChecker, err := NewChecker(test.whiteList)
require.NoError(t, err)
err = ipChecker.IsAuthorized(test.remoteAddr)
if test.authorized {
require.NoError(t, err)
} else {
require.Error(t, err)
}
})
}
}
func TestNew(t *testing.T) {
testCases := []struct {
desc string
trustedIPs []string
expectedAuthorizedIPs []*net.IPNet
errMessage string
}{
{
desc: "nil trusted IPs",
trustedIPs: nil,
expectedAuthorizedIPs: nil,
errMessage: "no trusted IPs provided",
}, {
desc: "empty trusted IPs",
trustedIPs: []string{},
expectedAuthorizedIPs: nil,
errMessage: "no trusted IPs provided",
}, {
desc: "trusted IPs containing empty string",
trustedIPs: []string{
"1.2.3.4/24",
"",
"fe80::/16",
},
expectedAuthorizedIPs: nil,
errMessage: "parsing CIDR trusted IPs <nil>: invalid CIDR address: ",
}, {
desc: "trusted IPs containing only an empty string",
trustedIPs: []string{
"",
},
expectedAuthorizedIPs: nil,
errMessage: "parsing CIDR trusted IPs <nil>: invalid CIDR address: ",
}, {
desc: "trusted IPs containing an invalid string",
trustedIPs: []string{
"foo",
},
expectedAuthorizedIPs: nil,
errMessage: "parsing CIDR trusted IPs <nil>: invalid CIDR address: foo",
}, {
desc: "IPv4 & IPv6 trusted IPs",
trustedIPs: []string{
"1.2.3.4/24",
"fe80::/16",
},
expectedAuthorizedIPs: []*net.IPNet{
{IP: net.IPv4(1, 2, 3, 0).To4(), Mask: net.IPv4Mask(255, 255, 255, 0)},
{IP: net.ParseIP("fe80::"), Mask: net.IPMask(net.ParseIP("ffff::"))},
},
errMessage: "",
}, {
desc: "IPv4 only",
trustedIPs: []string{
"127.0.0.1/8",
},
expectedAuthorizedIPs: []*net.IPNet{
{IP: net.IPv4(127, 0, 0, 0).To4(), Mask: net.IPv4Mask(255, 0, 0, 0)},
},
errMessage: "",
},
}
for _, test := range testCases {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
ipChecker, err := NewChecker(test.trustedIPs)
if test.errMessage != "" {
require.EqualError(t, err, test.errMessage)
} else {
require.NoError(t, err)
for index, actual := range ipChecker.authorizedIPsNet {
expected := test.expectedAuthorizedIPs[index]
assert.Equal(t, expected.IP, actual.IP)
assert.Equal(t, expected.Mask.String(), actual.Mask.String())
}
}
})
}
}
func TestContainsIsAllowed(t *testing.T) {
testCases := []struct {
desc string
trustedIPs []string
passIPs []string
rejectIPs []string
}{
{
desc: "IPv4",
trustedIPs: []string{"1.2.3.4/24"},
passIPs: []string{
"1.2.3.1",
"1.2.3.32",
"1.2.3.156",
"1.2.3.255",
},
rejectIPs: []string{
"1.2.16.1",
"1.2.32.1",
"127.0.0.1",
"8.8.8.8",
},
},
{
desc: "IPv4 single IP",
trustedIPs: []string{"8.8.8.8"},
passIPs: []string{"8.8.8.8"},
rejectIPs: []string{
"8.8.8.7",
"8.8.8.9",
"8.8.8.0",
"8.8.8.255",
"4.4.4.4",
"127.0.0.1",
},
},
{
desc: "IPv4 Net single IP",
trustedIPs: []string{"8.8.8.8/32"},
passIPs: []string{"8.8.8.8"},
rejectIPs: []string{
"8.8.8.7",
"8.8.8.9",
"8.8.8.0",
"8.8.8.255",
"4.4.4.4",
"127.0.0.1",
},
},
{
desc: "multiple IPv4",
trustedIPs: []string{"1.2.3.4/24", "8.8.8.8/8"},
passIPs: []string{
"1.2.3.1",
"1.2.3.32",
"1.2.3.156",
"1.2.3.255",
"8.8.4.4",
"8.0.0.1",
"8.32.42.128",
"8.255.255.255",
},
rejectIPs: []string{
"1.2.16.1",
"1.2.32.1",
"127.0.0.1",
"4.4.4.4",
"4.8.8.8",
},
},
{
desc: "IPv6",
trustedIPs: []string{"2a03:4000:6:d080::/64"},
passIPs: []string{
"2a03:4000:6:d080::",
"2a03:4000:6:d080::1",
"2a03:4000:6:d080:dead:beef:ffff:ffff",
"2a03:4000:6:d080::42",
},
rejectIPs: []string{
"2a03:4000:7:d080::",
"2a03:4000:7:d080::1",
"fe80::",
"4242::1",
},
},
{
desc: "IPv6 single IP",
trustedIPs: []string{"2a03:4000:6:d080::42/128"},
passIPs: []string{"2a03:4000:6:d080::42"},
rejectIPs: []string{
"2a03:4000:6:d080::1",
"2a03:4000:6:d080:dead:beef:ffff:ffff",
"2a03:4000:6:d080::43",
},
},
{
desc: "multiple IPv6",
trustedIPs: []string{"2a03:4000:6:d080::/64", "fe80::/16"},
passIPs: []string{
"2a03:4000:6:d080::",
"2a03:4000:6:d080::1",
"2a03:4000:6:d080:dead:beef:ffff:ffff",
"2a03:4000:6:d080::42",
"fe80::1",
"fe80:aa00:00bb:4232:ff00:eeee:00ff:1111",
"fe80::fe80",
},
rejectIPs: []string{
"2a03:4000:7:d080::",
"2a03:4000:7:d080::1",
"4242::1",
},
},
{
desc: "multiple IPv6 & IPv4",
trustedIPs: []string{"2a03:4000:6:d080::/64", "fe80::/16", "1.2.3.4/24", "8.8.8.8/8"},
passIPs: []string{
"2a03:4000:6:d080::",
"2a03:4000:6:d080::1",
"2a03:4000:6:d080:dead:beef:ffff:ffff",
"2a03:4000:6:d080::42",
"fe80::1",
"fe80:aa00:00bb:4232:ff00:eeee:00ff:1111",
"fe80::fe80",
"1.2.3.1",
"1.2.3.32",
"1.2.3.156",
"1.2.3.255",
"8.8.4.4",
"8.0.0.1",
"8.32.42.128",
"8.255.255.255",
},
rejectIPs: []string{
"2a03:4000:7:d080::",
"2a03:4000:7:d080::1",
"4242::1",
"1.2.16.1",
"1.2.32.1",
"127.0.0.1",
"4.4.4.4",
"4.8.8.8",
},
},
{
desc: "broken IP-addresses",
trustedIPs: []string{"127.0.0.1/32"},
passIPs: nil,
},
}
for _, test := range testCases {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
ipChecker, err := NewChecker(test.trustedIPs)
require.NoError(t, err)
require.NotNil(t, ipChecker)
for _, testIP := range test.passIPs {
allowed, err := ipChecker.Contains(testIP)
require.NoError(t, err)
assert.Truef(t, allowed, "%s should have passed.", testIP)
}
for _, testIP := range test.rejectIPs {
allowed, err := ipChecker.Contains(testIP)
require.NoError(t, err)
assert.Falsef(t, allowed, "%s should not have passed.", testIP)
}
})
}
}
func TestContainsBrokenIPs(t *testing.T) {
brokenIPs := []string{
"foo",
"10.0.0.350",
"fe:::80",
"",
"\\&$§&/(",
}
ipChecker, err := NewChecker([]string{"1.2.3.4/24"})
require.NoError(t, err)
for _, testIP := range brokenIPs {
_, err := ipChecker.Contains(testIP)
assert.Error(t, err)
}
}