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cb8afde629
There was a bug with empty PTR responses for IPs that are in the hosts file Closes: #2085
112 lines
3 KiB
Go
112 lines
3 KiB
Go
package util
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import (
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"io/ioutil"
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"net"
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"os"
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"strings"
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"testing"
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"time"
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"github.com/miekg/dns"
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"github.com/stretchr/testify/assert"
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)
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func prepareTestDir() string {
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const dir = "./agh-test"
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_ = os.RemoveAll(dir)
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_ = os.MkdirAll(dir, 0755)
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return dir
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}
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func TestAutoHostsResolution(t *testing.T) {
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ah := AutoHosts{}
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dir := prepareTestDir()
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defer func() { _ = os.RemoveAll(dir) }()
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f, _ := ioutil.TempFile(dir, "")
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defer func() { _ = os.Remove(f.Name()) }()
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defer f.Close()
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_, _ = f.WriteString(" 127.0.0.1 host localhost # comment \n")
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_, _ = f.WriteString(" ::1 localhost#comment \n")
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ah.Init(f.Name())
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// Existing host
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ips := ah.Process("localhost", dns.TypeA)
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assert.NotNil(t, ips)
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assert.Equal(t, 1, len(ips))
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assert.Equal(t, net.ParseIP("127.0.0.1"), ips[0])
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// Unknown host
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ips = ah.Process("newhost", dns.TypeA)
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assert.Nil(t, ips)
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// Unknown host (comment)
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ips = ah.Process("comment", dns.TypeA)
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assert.Nil(t, ips)
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// Test hosts file
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table := ah.List()
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name, ok := table["127.0.0.1"]
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assert.True(t, ok)
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assert.Equal(t, "host", name)
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// Test PTR
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a, _ := dns.ReverseAddr("127.0.0.1")
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a = strings.TrimSuffix(a, ".")
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assert.True(t, ah.ProcessReverse(a, dns.TypePTR) == "host")
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a, _ = dns.ReverseAddr("::1")
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a = strings.TrimSuffix(a, ".")
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assert.True(t, ah.ProcessReverse(a, dns.TypePTR) == "localhost")
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}
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func TestAutoHostsFSNotify(t *testing.T) {
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ah := AutoHosts{}
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dir := prepareTestDir()
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defer func() { _ = os.RemoveAll(dir) }()
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f, _ := ioutil.TempFile(dir, "")
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defer func() { _ = os.Remove(f.Name()) }()
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defer f.Close()
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// Init
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_, _ = f.WriteString(" 127.0.0.1 host localhost \n")
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ah.Init(f.Name())
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// Unknown host
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ips := ah.Process("newhost", dns.TypeA)
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assert.Nil(t, ips)
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// Stat monitoring for changes
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ah.Start()
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defer ah.Close()
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// Update file
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_, _ = f.WriteString("127.0.0.2 newhost\n")
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_ = f.Sync()
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// wait until fsnotify has triggerred and processed the file-modification event
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time.Sleep(50 * time.Millisecond)
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// Check if we are notified about changes
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ips = ah.Process("newhost", dns.TypeA)
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assert.NotNil(t, ips)
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assert.Equal(t, 1, len(ips))
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assert.Equal(t, "127.0.0.2", ips[0].String())
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}
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func TestIP(t *testing.T) {
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assert.Equal(t, "127.0.0.1", DNSUnreverseAddr("1.0.0.127.in-addr.arpa").String())
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assert.Equal(t, "::abcd:1234", DNSUnreverseAddr("4.3.2.1.d.c.b.a.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa").String())
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assert.Equal(t, "::abcd:1234", DNSUnreverseAddr("4.3.2.1.d.c.B.A.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa").String())
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assert.Nil(t, DNSUnreverseAddr("1.0.0.127.in-addr.arpa."))
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assert.Nil(t, DNSUnreverseAddr(".0.0.127.in-addr.arpa"))
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assert.Nil(t, DNSUnreverseAddr(".3.2.1.d.c.b.a.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa"))
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assert.Nil(t, DNSUnreverseAddr("4.3.2.1.d.c.b.a.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0..ip6.arpa"))
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assert.Nil(t, DNSUnreverseAddr("4.3.2.1.d.c.b. .0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa"))
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}
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