308 lines
10 KiB
Go
308 lines
10 KiB
Go
package resolvconf
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import (
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"bytes"
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"io/ioutil"
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"os"
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"testing"
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"github.com/docker/docker/pkg/ioutils"
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_ "github.com/docker/libnetwork/testutils"
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"github.com/docker/libnetwork/types"
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)
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func TestGet(t *testing.T) {
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resolvConfUtils, err := Get()
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if err != nil {
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t.Fatal(err)
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}
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resolvConfSystem, err := ioutil.ReadFile("/etc/resolv.conf")
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if err != nil {
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t.Fatal(err)
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}
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if string(resolvConfUtils.Content) != string(resolvConfSystem) {
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t.Fatalf("/etc/resolv.conf and GetResolvConf have different content.")
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}
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hashSystem, err := ioutils.HashData(bytes.NewReader(resolvConfSystem))
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if err != nil {
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t.Fatal(err)
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}
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if resolvConfUtils.Hash != hashSystem {
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t.Fatalf("/etc/resolv.conf and GetResolvConf have different hashes.")
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}
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}
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func TestGetNameservers(t *testing.T) {
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for resolv, result := range map[string][]string{`
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nameserver 1.2.3.4
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nameserver 40.3.200.10
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search example.com`: {"1.2.3.4", "40.3.200.10"},
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`search example.com`: {},
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`nameserver 1.2.3.4
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search example.com
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nameserver 4.30.20.100`: {"1.2.3.4", "4.30.20.100"},
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``: {},
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` nameserver 1.2.3.4 `: {"1.2.3.4"},
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`search example.com
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nameserver 1.2.3.4
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#nameserver 4.3.2.1`: {"1.2.3.4"},
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`search example.com
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nameserver 1.2.3.4 # not 4.3.2.1`: {"1.2.3.4"},
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} {
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test := GetNameservers([]byte(resolv), types.IP)
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if !strSlicesEqual(test, result) {
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t.Fatalf("Wrong nameserver string {%s} should be %v. Input: %s", test, result, resolv)
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}
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}
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}
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func TestGetNameserversAsCIDR(t *testing.T) {
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for resolv, result := range map[string][]string{`
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nameserver 1.2.3.4
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nameserver 40.3.200.10
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search example.com`: {"1.2.3.4/32", "40.3.200.10/32"},
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`search example.com`: {},
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`nameserver 1.2.3.4
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search example.com
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nameserver 4.30.20.100`: {"1.2.3.4/32", "4.30.20.100/32"},
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``: {},
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` nameserver 1.2.3.4 `: {"1.2.3.4/32"},
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`search example.com
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nameserver 1.2.3.4
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#nameserver 4.3.2.1`: {"1.2.3.4/32"},
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`search example.com
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nameserver 1.2.3.4 # not 4.3.2.1`: {"1.2.3.4/32"},
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} {
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test := GetNameserversAsCIDR([]byte(resolv))
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if !strSlicesEqual(test, result) {
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t.Fatalf("Wrong nameserver string {%s} should be %v. Input: %s", test, result, resolv)
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}
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}
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}
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func TestGetSearchDomains(t *testing.T) {
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for resolv, result := range map[string][]string{
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`search example.com`: {"example.com"},
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`search example.com # ignored`: {"example.com"},
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` search example.com `: {"example.com"},
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` search example.com # ignored`: {"example.com"},
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`search foo.example.com example.com`: {"foo.example.com", "example.com"},
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` search foo.example.com example.com `: {"foo.example.com", "example.com"},
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` search foo.example.com example.com # ignored`: {"foo.example.com", "example.com"},
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``: {},
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`# ignored`: {},
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`nameserver 1.2.3.4
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search foo.example.com example.com`: {"foo.example.com", "example.com"},
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`nameserver 1.2.3.4
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search dup1.example.com dup2.example.com
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search foo.example.com example.com`: {"foo.example.com", "example.com"},
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`nameserver 1.2.3.4
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search foo.example.com example.com
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nameserver 4.30.20.100`: {"foo.example.com", "example.com"},
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} {
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test := GetSearchDomains([]byte(resolv))
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if !strSlicesEqual(test, result) {
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t.Fatalf("Wrong search domain string {%s} should be %v. Input: %s", test, result, resolv)
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}
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}
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}
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func TestGetOptions(t *testing.T) {
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for resolv, result := range map[string][]string{
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`options opt1`: {"opt1"},
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`options opt1 # ignored`: {"opt1"},
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` options opt1 `: {"opt1"},
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` options opt1 # ignored`: {"opt1"},
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`options opt1 opt2 opt3`: {"opt1", "opt2", "opt3"},
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`options opt1 opt2 opt3 # ignored`: {"opt1", "opt2", "opt3"},
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` options opt1 opt2 opt3 `: {"opt1", "opt2", "opt3"},
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` options opt1 opt2 opt3 # ignored`: {"opt1", "opt2", "opt3"},
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``: {},
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`# ignored`: {},
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`nameserver 1.2.3.4`: {},
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`nameserver 1.2.3.4
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options opt1 opt2 opt3`: {"opt1", "opt2", "opt3"},
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`nameserver 1.2.3.4
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options opt1 opt2
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options opt3 opt4`: {"opt3", "opt4"},
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} {
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test := GetOptions([]byte(resolv))
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if !strSlicesEqual(test, result) {
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t.Fatalf("Wrong options string {%s} should be %v. Input: %s", test, result, resolv)
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}
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}
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}
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func strSlicesEqual(a, b []string) bool {
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if len(a) != len(b) {
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return false
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}
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for i, v := range a {
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if v != b[i] {
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return false
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}
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}
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return true
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}
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func TestBuild(t *testing.T) {
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file, err := ioutil.TempFile("", "")
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if err != nil {
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t.Fatal(err)
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}
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defer os.Remove(file.Name())
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_, err = Build(file.Name(), []string{"ns1", "ns2", "ns3"}, []string{"search1"}, []string{"opt1"})
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if err != nil {
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t.Fatal(err)
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}
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content, err := ioutil.ReadFile(file.Name())
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if err != nil {
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t.Fatal(err)
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}
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if expected := "search search1\nnameserver ns1\nnameserver ns2\nnameserver ns3\noptions opt1\n"; !bytes.Contains(content, []byte(expected)) {
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t.Fatalf("Expected to find '%s' got '%s'", expected, content)
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}
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}
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func TestBuildWithZeroLengthDomainSearch(t *testing.T) {
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file, err := ioutil.TempFile("", "")
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if err != nil {
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t.Fatal(err)
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}
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defer os.Remove(file.Name())
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_, err = Build(file.Name(), []string{"ns1", "ns2", "ns3"}, []string{"."}, []string{"opt1"})
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if err != nil {
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t.Fatal(err)
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}
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content, err := ioutil.ReadFile(file.Name())
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if err != nil {
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t.Fatal(err)
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}
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if expected := "nameserver ns1\nnameserver ns2\nnameserver ns3\noptions opt1\n"; !bytes.Contains(content, []byte(expected)) {
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t.Fatalf("Expected to find '%s' got '%s'", expected, content)
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}
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if notExpected := "search ."; bytes.Contains(content, []byte(notExpected)) {
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t.Fatalf("Expected to not find '%s' got '%s'", notExpected, content)
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}
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}
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func TestBuildWithNoOptions(t *testing.T) {
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file, err := ioutil.TempFile("", "")
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if err != nil {
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t.Fatal(err)
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}
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defer os.Remove(file.Name())
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_, err = Build(file.Name(), []string{"ns1", "ns2", "ns3"}, []string{"search1"}, []string{})
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if err != nil {
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t.Fatal(err)
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}
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content, err := ioutil.ReadFile(file.Name())
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if err != nil {
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t.Fatal(err)
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}
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if expected := "search search1\nnameserver ns1\nnameserver ns2\nnameserver ns3\n"; !bytes.Contains(content, []byte(expected)) {
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t.Fatalf("Expected to find '%s' got '%s'", expected, content)
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}
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if notExpected := "search ."; bytes.Contains(content, []byte(notExpected)) {
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t.Fatalf("Expected to not find '%s' got '%s'", notExpected, content)
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}
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}
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func TestFilterResolvDns(t *testing.T) {
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ns0 := "nameserver 10.16.60.14\nnameserver 10.16.60.21\n"
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if result, _ := FilterResolvDNS([]byte(ns0), false); result != nil {
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if ns0 != string(result.Content) {
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t.Fatalf("Failed No Localhost: expected \n<%s> got \n<%s>", ns0, string(result.Content))
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}
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}
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ns1 := "nameserver 10.16.60.14\nnameserver 10.16.60.21\nnameserver 127.0.0.1\n"
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if result, _ := FilterResolvDNS([]byte(ns1), false); result != nil {
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if ns0 != string(result.Content) {
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t.Fatalf("Failed Localhost: expected \n<%s> got \n<%s>", ns0, string(result.Content))
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}
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}
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ns1 = "nameserver 10.16.60.14\nnameserver 127.0.0.1\nnameserver 10.16.60.21\n"
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if result, _ := FilterResolvDNS([]byte(ns1), false); result != nil {
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if ns0 != string(result.Content) {
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t.Fatalf("Failed Localhost: expected \n<%s> got \n<%s>", ns0, string(result.Content))
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}
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}
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ns1 = "nameserver 127.0.1.1\nnameserver 10.16.60.14\nnameserver 10.16.60.21\n"
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if result, _ := FilterResolvDNS([]byte(ns1), false); result != nil {
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if ns0 != string(result.Content) {
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t.Fatalf("Failed Localhost: expected \n<%s> got \n<%s>", ns0, string(result.Content))
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}
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}
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ns1 = "nameserver ::1\nnameserver 10.16.60.14\nnameserver 127.0.2.1\nnameserver 10.16.60.21\n"
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if result, _ := FilterResolvDNS([]byte(ns1), false); result != nil {
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if ns0 != string(result.Content) {
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t.Fatalf("Failed Localhost: expected \n<%s> got \n<%s>", ns0, string(result.Content))
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}
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}
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ns1 = "nameserver 10.16.60.14\nnameserver ::1\nnameserver 10.16.60.21\nnameserver ::1"
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if result, _ := FilterResolvDNS([]byte(ns1), false); result != nil {
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if ns0 != string(result.Content) {
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t.Fatalf("Failed Localhost: expected \n<%s> got \n<%s>", ns0, string(result.Content))
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}
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}
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// with IPv6 disabled (false param), the IPv6 nameserver should be removed
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ns1 = "nameserver 10.16.60.14\nnameserver 2002:dead:beef::1\nnameserver 10.16.60.21\nnameserver ::1"
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if result, _ := FilterResolvDNS([]byte(ns1), false); result != nil {
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if ns0 != string(result.Content) {
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t.Fatalf("Failed Localhost+IPv6 off: expected \n<%s> got \n<%s>", ns0, string(result.Content))
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}
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}
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// with IPv6 disabled (false param), the IPv6 link-local nameserver with zone ID should be removed
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ns1 = "nameserver 10.16.60.14\nnameserver FE80::BB1%1\nnameserver FE80::BB1%eth0\nnameserver 10.16.60.21\n"
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if result, _ := FilterResolvDNS([]byte(ns1), false); result != nil {
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if ns0 != string(result.Content) {
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t.Fatalf("Failed Localhost+IPv6 off: expected \n<%s> got \n<%s>", ns0, string(result.Content))
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}
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}
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// with IPv6 enabled, the IPv6 nameserver should be preserved
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ns0 = "nameserver 10.16.60.14\nnameserver 2002:dead:beef::1\nnameserver 10.16.60.21\n"
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ns1 = "nameserver 10.16.60.14\nnameserver 2002:dead:beef::1\nnameserver 10.16.60.21\nnameserver ::1"
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if result, _ := FilterResolvDNS([]byte(ns1), true); result != nil {
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if ns0 != string(result.Content) {
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t.Fatalf("Failed Localhost+IPv6 on: expected \n<%s> got \n<%s>", ns0, string(result.Content))
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}
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}
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// with IPv6 enabled, and no non-localhost servers, Google defaults (both IPv4+IPv6) should be added
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ns0 = "\nnameserver 8.8.8.8\nnameserver 8.8.4.4\nnameserver 2001:4860:4860::8888\nnameserver 2001:4860:4860::8844"
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ns1 = "nameserver 127.0.0.1\nnameserver ::1\nnameserver 127.0.2.1"
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if result, _ := FilterResolvDNS([]byte(ns1), true); result != nil {
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if ns0 != string(result.Content) {
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t.Fatalf("Failed no Localhost+IPv6 enabled: expected \n<%s> got \n<%s>", ns0, string(result.Content))
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}
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}
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// with IPv6 disabled, and no non-localhost servers, Google defaults (only IPv4) should be added
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ns0 = "\nnameserver 8.8.8.8\nnameserver 8.8.4.4"
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ns1 = "nameserver 127.0.0.1\nnameserver ::1\nnameserver 127.0.2.1"
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if result, _ := FilterResolvDNS([]byte(ns1), false); result != nil {
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if ns0 != string(result.Content) {
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t.Fatalf("Failed no Localhost+IPv6 enabled: expected \n<%s> got \n<%s>", ns0, string(result.Content))
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}
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}
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}
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