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dns64
mirror of https://github.com/serverwentdown/dns64.git
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Rewrite code for new CoreDNS and proxy API 

Also changes our API. Closes #9
pull/10/head
Ambrose Chua 2019-09-20 15:01:11 +08:00
parent 19a768ab4c
commit 9974ddb0d2
Signed by: ambrose
GPG Key ID: BC367D33F140B5C2
7 changed files with 742 additions and 173 deletions
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98
README.md
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@ -1,6 +1,7 @@
# dns64 # dns64
The *dns64* plugin implements the DNS64 IPv6 transition mechanism. From Wikipedia: The `dns64` plugin implements the DNS64 IPv6 transition mechanism. From Wikipedia:
> DNS64 describes a DNS server that when asked for a domain's AAAA records, but only finds > DNS64 describes a DNS server that when asked for a domain's AAAA records, but only finds
> A records, synthesizes the AAAA records from the A records. > A records, synthesizes the AAAA records from the A records.
@ -11,62 +12,85 @@ The synthesis in only performed if the query came in via IPv6.
Not all features required by DNS64 are implemented, only basic AAAA synthesis. Not all features required by DNS64 are implemented, only basic AAAA synthesis.
* [ ] Support other `proxy` protocols in the configuration file
- Requires writing a custom parser for the proxy plugin
* [ ] Support "mapping of separate IPv4 ranges to separate IPv6 prefixes"
* [ ] Resolve PTR records * [ ] Resolve PTR records
* [ ] Follow CNAME records * [ ] Follow CNAME records
* [ ] Make resolver DNSSEC aware * [ ] Make resolver DNSSEC aware
## Syntax ## Usage
~~~ > **The syntax has changed since 20 September 2019**. "upstream" has been renamed to proxy
Translate with the well known prefix. Applies to all queries
```
dns64
```
Use a custom prefix
```
dns64 64:1337::/96
# Or
dns64 { dns64 {
upstream ADDRESS... prefix 64:1337::/96
prefix IPV6
} }
~~~ ```
* `upstream` specifies the upstream resolver. Use a reverse proxy, with a custom prefix
* `prefix` specifies any local IPv6 prefix to use, in addition to the well known
prefix (64:ff9b::/96).
## Examples ```
In recursive resolver mode:
~~~
# Perform dns64 AAAA synthesizing using 8.8.8.8 for resolving any A
dns64 { dns64 {
upstream 8.8.8.8:53 proxy . 1.1.1.1 1.0.0.1
prefix 64:1337::/96
} }
proxy . 8.8.8.8:53 ```
~~~
To make DNS64 resolve authoritatively, do: Enable translation even if an existing AAAA record is present
~~~ ```
dns64 { dns64 {
   upstream localhost:53 translateAll
   # caveat: additional round trip through networking stack
} }
file example.com.db ```
~~~
* `prefix` specifies any local IPv6 prefix to use, instead of the well known prefix (64:ff9b::/96)
* `proxy` optionally specifies upstream DNS protocol addresses like the `proxy` plugin
## See Also ## See Also
<https://en.wikipedia.org/wiki/IPv6_transition_mechanism#DNS64> and RFC 6147. RFC 6147
## Installation ## Installation
```console See [CoreDNS Documentation](https://coredns.io/2017/07/25/compile-time-enabling-or-disabling-plugins/) for more information on how to include this plugin. Here's the summary:
$ go get github.com/coredns/coredns
$ go get github.com/serverwentdown/dns64
$ cd $GOPATH/src/github.com/coredns/coredns
$ vim plugin.cfg
Add to end of file:
proxy:github.com/coredns/proxy
dns64:github.com/serverwentdown/dns64
$ go generate
$ go build
$ ./coredns -plugins | grep dns64
``` ```
package main
import (
_ "github.com/coredns/coredns/core/plugin"
_ "github.com/coredns/proxy"
_ "github.com/serverwentdown/dns64"
"github.com/coredns/coredns/core/dnsserver"
"github.com/coredns/coredns/coremain"
)
var additionalDirectives = []string{
"dns64",
"proxy",
}
func init() {
dnsserver.Directives = append(dnsserver.Directives, additionalDirectives...)
}
func main() {
coremain.Run()
}
```
You might have to copy CoreDNS's `go.mod`

159
dns64.go
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@ -8,7 +8,9 @@ import (
"time" "time"
"github.com/coredns/coredns/plugin" "github.com/coredns/coredns/plugin"
"github.com/coredns/coredns/plugin/pkg/nonwriter"
"github.com/coredns/coredns/plugin/pkg/response" "github.com/coredns/coredns/plugin/pkg/response"
"github.com/coredns/coredns/plugin/pkg/upstream"
"github.com/coredns/coredns/request" "github.com/coredns/coredns/request"
"github.com/coredns/proxy" "github.com/coredns/proxy"
@ -17,89 +19,81 @@ import (
// DNS64 performs DNS64. // DNS64 performs DNS64.
type DNS64 struct { type DNS64 struct {
Next plugin.Handler *proxy.Proxy
Proxy proxy.Proxy NativeUpstream *upstream.Upstream
Prefix *net.IPNet Next plugin.Handler
translateAll bool Prefix *net.IPNet
TranslateAll bool // Not comply with 5.1.1
} }
// ServeDNS implements the plugin.Handler interface. // ServeDNS implements the plugin.Handler interface.
func (d DNS64) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) { func (d DNS64) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
drr := &ResponseWriter{d, w} hijackedWriter := &ResponseWriter{w, d, ctx, r}
return d.Next.ServeDNS(ctx, drr, r) return d.Next.ServeDNS(ctx, hijackedWriter, r)
} }
// Name implements the Handler interface. // Name implements the Handler interface.
func (d DNS64) Name() string { return "dns64" } func (d DNS64) Name() string { return "dns64" }
// ResponseWriter is a response writer that implements DNS64, when an AAAA query returns // ResponseWriter is a response writer that implements DNS64, when an AAAA question returns
// NODATA, it will try and fetch any A records and synthesize the AAAA records on the fly. // NODATA, it will try and fetch any A records and synthesize the AAAA records on the fly.
type ResponseWriter struct { type ResponseWriter struct {
DNS64
dns.ResponseWriter dns.ResponseWriter
DNS64
ctx context.Context
req *dns.Msg
} }
// WriteMsg implements the dns.ResponseWriter interface. // WriteMsg implements the dns.ResponseWriter interface.
func (r *ResponseWriter) WriteMsg(res *dns.Msg) error { func (r *ResponseWriter) WriteMsg(res *dns.Msg) error {
state := request.Request{W: r, Req: res} state := request.Request{W: r, Req: res}
// only respond with this when the request came in over IPv6. // Only respond with this when the request came in over IPv6. This is not mentioned in the RFC
if state.Family() == 1 { // if it came in over v4, don't do anything. // File an issue if you think we should translate even requests made using IPv4, or have a configuration flag
if state.Family() == 1 { // If it came in over v4, don't do anything.
return r.ResponseWriter.WriteMsg(res) return r.ResponseWriter.WriteMsg(res)
} }
// do not modify if query is not AAAA or not of class IN. // Do not modify if question is not AAAA or not of class IN. See 5.1
if state.QType() != dns.TypeAAAA || state.QClass() != dns.ClassINET { if state.QType() != dns.TypeAAAA || state.QClass() != dns.ClassINET {
return r.ResponseWriter.WriteMsg(res) return r.ResponseWriter.WriteMsg(res)
} }
// do not modify if there are AAAA records or NameError. continue if NoData or any other error.
ty, _ := response.Typify(res, time.Now().UTC()) ty, _ := response.Typify(res, time.Now().UTC())
if ty == response.NoError || ty == response.NameError {
if hasAAAA(res) && !r.translateAll { // Handle NameError normally. See 5.1.2
if ty == response.NameError {
return r.ResponseWriter.WriteMsg(res)
}
// If results in no error and has AAAA, handle normally. See 5.1.6
if ty == response.NoError {
// TranslateAll will disable this behaviour and translate all queries. See 5.1.1
if hasAAAA(res) && !r.TranslateAll {
return r.ResponseWriter.WriteMsg(res) return r.ResponseWriter.WriteMsg(res)
} }
} }
// perform request to upstream. // Perform Lookup
res2, err := r.Proxy.Lookup(state, state.Name(), dns.TypeA) var replacement *dns.Msg
var err error
if len(*r.Upstreams) > 0 {
// Use Proxy to lookup
req := new(dns.Msg)
req.SetQuestion(state.Name(), dns.TypeA)
nw := nonwriter.New(state.W)
_, err = r.Proxy.ServeDNS(r.ctx, nw, req)
replacement = nw.Msg
} else {
// Use NativeUpstream to lookup
replacement, err = r.NativeUpstream.Lookup(r.ctx, state, state.Name(), dns.TypeA)
}
if err != nil { if err != nil {
log.Warningf("[WARNING] Unable to query upstream DNS: %v", err) return err
res.MsgHdr.Rcode = dns.RcodeServerFailure
return r.ResponseWriter.WriteMsg(res)
} }
// modify response. // Modify response.
res.MsgHdr.Rcode = dns.RcodeSuccess r.AnswerRewrite(res, replacement)
nsTtl := uint32(600)
for i := 0; i < len(res.Ns); i++ {
if res.Ns[i].Header().Rrtype == dns.TypeSOA {
nsTtl = res.Ns[i].Header().Ttl
}
}
res.Answer = res2.Answer
for i := 0; i < len(res.Answer); i++ {
ans := res.Answer[i]
hdr := ans.Header()
if hdr.Rrtype == dns.TypeA {
aaaa, _ := To6(r.Prefix, ans.(*dns.A).A)
ttl := nsTtl
if ans.Header().Ttl < ttl {
ttl = ans.Header().Ttl
}
res.Answer[i] = &dns.AAAA{
Hdr: dns.RR_Header{
Name: hdr.Name,
Rrtype: dns.TypeAAAA,
Class: hdr.Class,
Ttl: ttl,
},
AAAA: aaaa,
}
}
}
res.Ns = []dns.RR{}
return r.ResponseWriter.WriteMsg(res) return r.ResponseWriter.WriteMsg(res)
} }
@ -116,15 +110,64 @@ func (r *ResponseWriter) Hijack() {
return return
} }
// To6 takes a prefix and IPv4 address and returns an IPv6 address according to RFC 6052. // AnswerRewrite turns A responses into AAAA responses
func To6(prefix *net.IPNet, addr net.IP) (net.IP, error) { func (dns64 DNS64) AnswerRewrite(r *dns.Msg, replacement *dns.Msg) {
r.MsgHdr.Rcode = dns.RcodeSuccess
// Extract TTLs
nsTtl := uint32(600) // Default NS record TTL
for i := 0; i < len(r.Ns); i++ {
if r.Ns[i].Header().Rrtype == dns.TypeSOA {
nsTtl = r.Ns[i].Header().Ttl // Use specified NS record TTL
}
}
// Replace all our AAAA answers with A answers
r.Answer = replacement.Answer
for i := 0; i < len(r.Answer); i++ {
ans := r.Answer[i]
hdr := ans.Header()
// All of the answers should be A answers. Ensure that
if hdr.Rrtype == dns.TypeA {
aaaa, _ := to6(dns64.Prefix, ans.(*dns.A).A)
ttl := nsTtl
// Limit the TTL to the NS record TTL
if ans.Header().Ttl < ttl {
ttl = ans.Header().Ttl
}
// Replace A answer with a DNS64 AAAA answer
r.Answer[i] = &dns.AAAA{
Hdr: dns.RR_Header{
Name: hdr.Name,
Rrtype: dns.TypeAAAA,
Class: hdr.Class,
Ttl: ttl,
},
AAAA: aaaa,
}
}
}
// TODO: Explain this
r.Ns = []dns.RR{}
}
// hasAAAA checks if AAAA records exists in dns.Msg
func hasAAAA(res *dns.Msg) bool {
for _, a := range res.Answer {
if a.Header().Rrtype == dns.TypeAAAA {
return true
}
}
return false
}
// to6 takes a prefix and IPv4 address and returns an IPv6 address according to RFC 6052.
func to6(prefix *net.IPNet, addr net.IP) (net.IP, error) {
addr = addr.To4() addr = addr.To4()
if addr == nil { if addr == nil {
return nil, errors.New("Not a valid IPv4 address") return nil, errors.New("Not a valid IPv4 address")
} }
n, _ := prefix.Mask.Size() n, _ := prefix.Mask.Size()
// assumes prefix has been validated during setup // Assumes prefix has been validated during setup
v6 := make([]byte, 16) v6 := make([]byte, 16)
i, j := 0, 0 i, j := 0, 0
@ -143,13 +186,3 @@ func To6(prefix *net.IPNet, addr net.IP) (net.IP, error) {
return v6, nil return v6, nil
} }
// hasAAAA checks if AAAA records exists in dns.Msg
func hasAAAA(res *dns.Msg) bool {
for _, a := range res.Answer {
if a.Header().Rrtype == dns.TypeAAAA {
return true
}
}
return false
}

2
dns64_test.go
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@ -10,7 +10,7 @@ func WrapperTo6(prefix, address string) (net.IP, error) {
_, pref, _ := net.ParseCIDR(prefix) _, pref, _ := net.ParseCIDR(prefix)
addr := net.ParseIP(address) addr := net.ParseIP(address)
v6, err := To6(pref, addr) v6, err := to6(pref, addr)
return v6, err return v6, err
} }

11
go.mod Normal file
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@ -0,0 +1,11 @@
module github.com/serverwentdown/dns64
go 1.12
require (
github.com/caddyserver/caddy v1.0.3
github.com/coredns/coredns v1.6.3
github.com/coredns/proxy v0.0.0-20190703061257-ce7578ebb7dd
github.com/mholt/caddy v0.11.4
github.com/miekg/dns v1.1.17
)

438
go.sum Normal file
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@ -0,0 +1,438 @@
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cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
cloud.google.com/go v0.41.0/go.mod h1:OauMR7DV8fzvZIl2qg6rkaIhD/vmgk4iwEw/h6ercmg=
github.com/Azure/azure-sdk-for-go v31.1.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
github.com/Azure/go-autorest v11.1.2+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
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github.com/Shopify/sarama v1.21.0/go.mod h1:yuqtN/pe8cXRWG5zPaO7hCfNJp5MwmkoJEoLjkm5tCQ=
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github.com/caddyserver/caddy v1.0.3 h1:i9gRhBgvc5ifchwWtSe7pDpsdS9+Q0Rw9oYQmYUTw1w=
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github.com/cheekybits/genny v0.0.0-20170328200008-9127e812e1e9/go.mod h1:+tQajlRqAUrPI7DOSpB0XAqZYtQakVtB7wXkRAgjxjQ=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/cockroachdb/datadriven v0.0.0-20190809214429-80d97fb3cbaa/go.mod h1:zn76sxSg3SzpJ0PPJaLDCu+Bu0Lg3sKTORVIj19EIF8=
github.com/coredns/coredns v1.4.1-0.20190312110147-91d645168488/go.mod h1:lCPlCTDuEbx701jyBww8zIU8zQDzKyHhZVcJC5EfKKA=
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github.com/coredns/coredns v1.6.3/go.mod h1:jFo9+Ty/23oC866Rq0eSJshAZ6g8pYrEfZ4WzkHyEBY=
github.com/coredns/federation v0.0.0-20190818181423-e032b096babe/go.mod h1:MoqTEFX8GlnKkyq8eBCF94VzkNAOgjdlCJ+Pz/oCLPk=
github.com/coredns/proxy v0.0.0-20190303110311-afc937d015b9/go.mod h1:BXx1AhWPTL4TJqe70SRiT1MT41j8yWJGU6kEInPiDAA=
github.com/coredns/proxy v0.0.0-20190703061257-ce7578ebb7dd h1:eRh9sbuD6hGLNFevF8q5TstXqffzTANmnqR/vQSi+Sk=
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github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
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github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/dimchansky/utfbom v1.1.0/go.mod h1:rO41eb7gLfo8SF1jd9F8HplJm1Fewwi4mQvIirEdv+8=
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github.com/docker/spdystream v0.0.0-20160310174837-449fdfce4d96/go.mod h1:Qh8CwZgvJUkLughtfhJv5dyTYa91l1fOUCrgjqmcifM=
github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
github.com/eapache/go-resiliency v1.1.0/go.mod h1:kFI+JgMyC7bLPUVY133qvEBtVayf5mFgVsvEsIPBvNs=
github.com/eapache/go-xerial-snappy v0.0.0-20160609142408-bb955e01b934/go.mod h1:+020luEh2TKB4/GOp8oxxtq0Daoen/Cii55CzbTV6DU=
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github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
github.com/elazarl/goproxy v0.0.0-20170405201442-c4fc26588b6e/go.mod h1:/Zj4wYkgs4iZTTu3o/KG3Itv/qCCa8VVMlb3i9OVuzc=
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github.com/farsightsec/golang-framestream v0.0.0-20180124174429-c06a5734334d/go.mod h1:eNde4IQyEiA5br02AouhEHCu3p3UzrCdFR4LuQHklMI=
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github.com/farsightsec/golang-framestream v0.0.0-20181102145529-8a0cb8ba8710/go.mod h1:eNde4IQyEiA5br02AouhEHCu3p3UzrCdFR4LuQHklMI=
github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 h1:BHsljHzVlRcyQhjrss6TZTdY2VfCqZPbv5k3iBFa2ZQ=
github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
github.com/go-acme/lego v2.5.0+incompatible h1:5fNN9yRQfv8ymH3DSsxla+4aYeQt2IgfZqHKVnK8f0s=
github.com/go-acme/lego v2.5.0+incompatible/go.mod h1:yzMNe9CasVUhkquNvti5nAtPmG94USbYxYrZfTkIn0M=
github.com/go-ini/ini v1.37.0/go.mod h1:ByCAeIL28uOIIG0E3PJtZPDL8WnHpFKFOtgjp+3Ies8=
github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
github.com/go-logr/logr v0.1.0/go.mod h1:ixOQHD9gLJUVQQ2ZOR7zLEifBX6tGkNJF4QyIY7sIas=
github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
github.com/gogo/protobuf v0.0.0-20171007142547-342cbe0a0415/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
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github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
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github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
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github.com/golang/mock v1.3.1/go.mod h1:sBzyDLLjw3U8JLTeZvSv8jJB+tU5PVekmnlKIyFUx0Y=
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github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
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github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
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github.com/gophercloud/gophercloud v0.0.0-20180928224355-bfc006765209/go.mod h1:3WdhXV3rUYy9p6AUW8d94kr+HS62Y4VL9mBnFxsD8q4=
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github.com/gregjones/httpcache v0.0.0-20170728041850-787624de3eb7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=
github.com/grpc-ecosystem/grpc-gateway v1.9.5/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
github.com/grpc-ecosystem/grpc-opentracing v0.0.0-20180507213350-8e809c8a8645 h1:MJG/KsmcqMwFAkh8mTnAwhyKoB+sTAnY4CACC110tbU=
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github.com/hashicorp/go-syslog v1.0.0/go.mod h1:qPfqrKkXGihmCqbJM2mZgkZGvKG1dFdvsLplgctolz4=
github.com/hashicorp/golang-lru v0.0.0-20180201235237-0fb14efe8c47/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
github.com/imdario/mergo v0.3.5/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
github.com/imdario/mergo v0.3.7/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
github.com/jimstudt/http-authentication v0.0.0-20140401203705-3eca13d6893a/go.mod h1:wK6yTYYcgjHE1Z1QtXACPDjcFJyBskHEdagmnq3vsP8=
github.com/jmespath/go-jmespath v0.0.0-20160202185014-0b12d6b521d8/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
github.com/json-iterator/go v0.0.0-20180701071628-ab8a2e0c74be/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
github.com/json-iterator/go v1.1.7/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=
github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
github.com/klauspost/cpuid v1.2.0 h1:NMpwD2G9JSFOE1/TJjGSo5zG7Yb2bTe7eq1jH+irmeE=
github.com/klauspost/cpuid v1.2.0/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/kylelemons/godebug v0.0.0-20170820004349-d65d576e9348/go.mod h1:B69LEHPfb2qLo0BaaOLcbitczOKLWTsrBG9LczfCD4k=
github.com/lucas-clemente/aes12 v0.0.0-20171027163421-cd47fb39b79f/go.mod h1:JpH9J1c9oX6otFSgdUHwUBUizmKlrMjxWnIAjff4m04=
github.com/lucas-clemente/quic-clients v0.1.0/go.mod h1:y5xVIEoObKqULIKivu+gD/LU90pL73bTdtQjPBvtCBk=
github.com/lucas-clemente/quic-go v0.10.2/go.mod h1:hvaRS9IHjFLMq76puFJeWNfmn+H70QZ/CXoxqw9bzao=
github.com/lucas-clemente/quic-go-certificates v0.0.0-20160823095156-d2f86524cced/go.mod h1:NCcRLrOTZbzhZvixZLlERbJtDtYsmMw8Jc4vS8Z0g58=
github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
github.com/marten-seemann/qtls v0.2.3/go.mod h1:xzjG7avBwGGbdZ8dTGxlBnLArsVKLvwmjgmPuiQEcYk=
github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
github.com/mattn/go-runewidth v0.0.2/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
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github.com/spf13/afero v1.2.2/go.mod h1:9ZxEEn6pIJ8Rxe320qSDBk6AsU0r9pR7Q4OcevTdifk=
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github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/ugorji/go v0.0.0-20161130061742-9c7f9b7a2bc3/go.mod h1:hnLbHMwcvSihnDhEfx2/BzKp2xb0Y+ErdfYcrs9tkJQ=
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github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
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go.etcd.io/bbolt v1.3.3/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
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go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
golang.org/x/crypto v0.0.0-20180621125126-a49355c7e3f8/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20181001203147-e3636079e1a4/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20181025213731-e84da0312774/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190123085648-057139ce5d2b/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190228161510-8dd112bcdc25/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20190418165655-df01cb2cc480/go.mod h1:WFFai1msRO1wXaEeE5yQxYXgSfI8pQAWXbQop6sCtWE=
golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20190829043050-9756ffdc2472 h1:Gv7RPwsi3eZ2Fgewe3CBsuOebPwO27PoXzRpJPsvSSM=
golang.org/x/crypto v0.0.0-20190829043050-9756ffdc2472/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
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golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
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golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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golang.org/x/net v0.0.0-20181201002055-351d144fa1fc/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20181220203305-927f97764cc3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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k8s.io/apimachinery v0.0.0-20190612205821-1799e75a0719/go.mod h1:I4A+glKBHiTgiEjQiCCQfCAIcIMFGt291SmsvcrFzJA=
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k8s.io/client-go v10.0.0+incompatible/go.mod h1:7vJpHMYJwNQCWgzmNV+VYUl1zCObLyodBc8nIyt8L5s=
k8s.io/klog v0.0.0-20181108234604-8139d8cb77af/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
k8s.io/klog v0.3.0/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
k8s.io/klog v0.3.1/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
k8s.io/klog v0.4.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I=
k8s.io/kube-openapi v0.0.0-20180928202339-9dfdf9be683f/go.mod h1:BXM9ceUBTj2QnfH2MK1odQs778ajze1RxcmP6S8RVVc=
k8s.io/kube-openapi v0.0.0-20190228160746-b3a7cee44a30/go.mod h1:BXM9ceUBTj2QnfH2MK1odQs778ajze1RxcmP6S8RVVc=
k8s.io/kube-openapi v0.0.0-20190306001800-15615b16d372/go.mod h1:BXM9ceUBTj2QnfH2MK1odQs778ajze1RxcmP6S8RVVc=
k8s.io/utils v0.0.0-20190221042446-c2654d5206da/go.mod h1:8k8uAuAQ0rXslZKaEWd0c3oVhZz7sSzSiPnVZayjIX0=
k8s.io/utils v0.0.0-20190529001817-6999998975a7/go.mod h1:sZAwmy6armz5eXlNoLmJcl4F1QuKu7sr+mFQ0byX7Ew=
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=

119
setup.go
View File

@ -2,15 +2,16 @@ package dns64
import ( import (
"net" "net"
"strconv"
"github.com/coredns/proxy"
"github.com/coredns/coredns/core/dnsserver" "github.com/coredns/coredns/core/dnsserver"
"github.com/coredns/coredns/plugin" "github.com/coredns/coredns/plugin"
clog "github.com/coredns/coredns/plugin/pkg/log" clog "github.com/coredns/coredns/plugin/pkg/log"
"github.com/coredns/coredns/plugin/pkg/parse" "github.com/coredns/coredns/plugin/pkg/upstream"
"github.com/coredns/proxy"
"github.com/mholt/caddy" "github.com/caddyserver/caddy"
"github.com/caddyserver/caddy/caddyfile"
) )
var log = clog.NewWithPlugin("dns64") var log = clog.NewWithPlugin("dns64")
@ -23,71 +24,113 @@ func init() {
} }
func setup(c *caddy.Controller) error { func setup(c *caddy.Controller) error {
prxy, pref, translateAll, err := dns64Parse(c) dns64, err := dns64Parse(&c.Dispenser)
if err != nil { if err != nil {
return plugin.Error("dns64", err) return plugin.Error("dns64", err)
} }
t := dnsserver.GetConfig(c).Handler("trace")
dns64.Trace = t
dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler { dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
return DNS64{Next: next, Proxy: prxy, Prefix: pref, translateAll: translateAll} dns64.Next = next
return dns64
}) })
for i := range *dns64.Upstreams {
u := (*dns64.Upstreams)[i]
c.OnStartup(func() error {
return u.Exchanger().OnStartup(dns64.Proxy)
})
c.OnShutdown(func() error {
return u.Exchanger().OnShutdown(dns64.Proxy)
})
// Register shutdown handlers.
c.OnShutdown(u.Stop)
}
return nil return nil
} }
func dns64Parse(c *caddy.Controller) (proxy.Proxy, *net.IPNet, bool, error) { func dns64Parse(c *caddyfile.Dispenser) (DNS64, error) {
prxy := proxy.Proxy{} _, defaultPref, _ := net.ParseCIDR("64:ff9b::/96")
_, pref, _ := net.ParseCIDR("64:ff9b::/96") dns64 := DNS64{
translateAll := false Proxy: &proxy.Proxy{
Upstreams: &[]proxy.Upstream{},
},
NativeUpstream: upstream.New(),
Prefix: defaultPref,
TranslateAll: false,
}
for c.Next() { for c.Next() {
args := c.RemainingArgs() args := c.RemainingArgs()
if len(args) == 1 {
pref, err := parsePrefix(c, args[0])
if err != nil {
return dns64, err
}
dns64.Prefix = pref
continue
}
if len(args) > 0 { if len(args) > 0 {
return prxy, pref, translateAll, c.ArgErr() return dns64, c.ArgErr()
} }
for c.NextBlock() { for c.NextBlock() {
switch c.Val() { switch c.Val() {
case "upstream": case "proxy":
// Fake proxy arguments. Need a better solution
args := c.RemainingArgs() args := c.RemainingArgs()
if len(args) == 0 { fakeTokens := []caddyfile.Token{}
return prxy, pref, translateAll, c.ArgErr() for _, arg := range args {
fakeTokens = append(fakeTokens, caddyfile.Token{
File: c.File(),
Line: c.Line(),
Text: arg,
})
} }
ups, err := parse.HostPortOrFile(args...) fakeDispenser := caddyfile.NewDispenserTokens(c.File(), fakeTokens)
u, err := proxy.NewStaticUpstream(&fakeDispenser)
if err != nil { if err != nil {
return prxy, pref, translateAll, err return dns64, err
} }
prxy = proxy.NewLookup(ups) *dns64.Upstreams = append(*dns64.Upstreams, u)
log.Infof("Upstream %v", ups)
case "prefix": case "prefix":
if !c.NextArg() { if !c.NextArg() {
return prxy, pref, translateAll, c.ArgErr() return dns64, c.ArgErr()
}
var err error
_, pref, err = net.ParseCIDR(c.Val())
// test for valid prefix
n, total := pref.Mask.Size()
if total != 128 {
return prxy, pref, translateAll, c.Errf("'%s' not a valid IPv6 address", pref)
}
if n%8 != 0 || n < 32 || n > 96 {
return prxy, pref, translateAll, c.Errf("'%s' not a valid prefix length", pref)
} }
pref, err := parsePrefix(c, c.Val())
if err != nil { if err != nil {
return prxy, pref, translateAll, err return dns64, err
} }
log.Infof("Prefix %v", pref) dns64.Prefix = pref
case "translateAll": case "translateAll":
args := c.RemainingArgs() dns64.TranslateAll = true
if len(args) > 0 {
translateAll, _ = strconv.ParseBool(args[0])
}
default: default:
return prxy, pref, translateAll, c.Errf("unknown property '%s'", c.Val()) return dns64, c.Errf("unknown property '%s'", c.Val())
} }
} }
} }
return prxy, pref, translateAll, nil return dns64, nil
}
func parsePrefix(c *caddyfile.Dispenser, addr string) (*net.IPNet, error) {
_, pref, err := net.ParseCIDR(addr)
if err != nil {
return nil, err
}
// Test for valid prefix
n, total := pref.Mask.Size()
if total != 128 {
return nil, c.Errf("'%s' not a valid IPv6 address", pref)
}
if n%8 != 0 || n < 32 || n > 96 {
return nil, c.Errf("'%s' not a valid prefix length", pref)
}
return pref, nil
} }

88
setup_test.go
View File

@ -3,7 +3,7 @@ package dns64
import ( import (
"testing" "testing"
"github.com/mholt/caddy" "github.com/caddyserver/caddy"
) )
func TestSetupDns64(t *testing.T) { func TestSetupDns64(t *testing.T) {
@ -17,91 +17,111 @@ func TestSetupDns64(t *testing.T) {
false, false,
"64:ff9b::/96", "64:ff9b::/96",
}, },
{
`dns64 64:dead::/96`,
false,
"64:dead::/96",
},
{ {
`dns64 { `dns64 {
upstream 8.8.8.8 translateAll
}`, }`,
false, false,
"64:ff9b::/96", "64:ff9b::/96",
}, },
{ {
`dns64 { `dns64 {
prefix 64:ff9b::/96 translateAll
}`, proxy . 8.8.8.8
}`,
false, false,
"64:ff9b::/96", "64:ff9b::/96",
}, },
{ {
`dns64 { `dns64 {
prefix 64:ff9b::/32 proxy . 8.8.8.8
}`, }`,
false,
"64:ff9b::/96",
},
{
`dns64 {
prefix 64:ff9b::/96
}`,
false,
"64:ff9b::/96",
},
{
`dns64 {
prefix 64:ff9b::/32
}`,
false, false,
"64:ff9b::/32", "64:ff9b::/32",
}, },
{ {
`dns64 { `dns64 {
prefix 64:ff9b::/52 prefix 64:ff9b::/52
}`, }`,
true, true,
"64:ff9b::/52", "64:ff9b::/52",
}, },
{ {
`dns64 { `dns64 {
prefix 64:ff9b::/104 prefix 64:ff9b::/104
}`, }`,
true, true,
"64:ff9b::/104", "64:ff9b::/104",
}, },
{ {
`dns64 { `dns64 {
prefix 8.8.8.8/24 prefix 8.8.8.8/24
}`, }`,
true, true,
"8.8.9.9/24", "8.8.9.9/24",
}, },
{ {
`dns64 { `dns64 {
upstream 8.8.8.8 8.8.4.4 proxy . 8.8.8.8 8.8.4.4
}`, }`,
false, false,
"64:ff9b::/96", "64:ff9b::/96",
}, },
{ {
`dns64 { `dns64 {
upstream some_not_useable_domain proxy . some_not_useable_domain
}`, }`,
true, true,
"64:ff9b::/96", "64:ff9b::/96",
}, },
{ {
`dns64 { `dns64 {
prefix 64:ff9b::/96 prefix 64:ff9b::/96
upstream 8.8.8.8 proxy . 8.8.8.8
}`, }`,
false, false,
"64:ff9b::/96", "64:ff9b::/96",
}, },
{ {
`dns64 { `dns64 {
prefix 2002:ac12:b083::/96 prefix 2002:ac12:b083::/96
upstream 8.8.8.8 proxy . 8.8.8.8
}`, }`,
false, false,
"2002:ac12:b083::/96", "2002:ac12:b083::/96",
}, },
{ {
`dns64 { `dns64 {
prefix 2002:c0a8:a88a::/48 prefix 2002:c0a8:a88a::/48
upstream 8.8.8.8 proxy . 8.8.8.8
}`, }`,
false, false,
"2002:c0a8:a88a::/48", "2002:c0a8:a88a::/48",
}, },
{ {
`dns64 foobar { `dns64 foobar {
prefix 64:ff9b::/96 prefix 64:ff9b::/96
upstream 8.8.8.8 proxy . 8.8.8.8
}`, }`,
true, true,
"64:ff9b::/96", "64:ff9b::/96",
}, },
@ -112,8 +132,8 @@ func TestSetupDns64(t *testing.T) {
}, },
{ {
`dns64 { `dns64 {
foobar foobar
}`, }`,
true, true,
"64:ff9b::/96", "64:ff9b::/96",
}, },
@ -121,13 +141,13 @@ func TestSetupDns64(t *testing.T) {
for i, test := range tests { for i, test := range tests {
c := caddy.NewTestController("dns", test.inputUpstreams) c := caddy.NewTestController("dns", test.inputUpstreams)
_, pref, err := dns64Parse(c) dns64, err := dns64Parse(&c.Dispenser)
if (err != nil) != test.shouldErr { if (err != nil) != test.shouldErr {
t.Errorf("Test %d expected %v error, got %v for %s", i+1, test.shouldErr, err, test.inputUpstreams) t.Errorf("Test %d expected %v error, got %v for %s", i+1, test.shouldErr, err, test.inputUpstreams)
} }
if err == nil { if err == nil {
if pref.String() != test.prefix { if dns64.Prefix.String() != test.prefix {
t.Errorf("Test %d expected prefix %s, got %v", i+1, test.prefix, pref.String()) t.Errorf("Test %d expected prefix %s, got %v", i+1, test.prefix, dns64.Prefix.String())
} }
} }
} }