Mirrors/coredns
1
0
Fork 0
mirror of https://github.com/coredns/coredns.git synced 2025-10-27 16:24:19 -04:00
Code Issues Packages Projects Releases Wiki Activity

Doh: put in pkg/doh (#1946)

Browse Source 
* DoH: put in pkg/doh

Factor out the DoH stuff into its own package, add function to request
a DoH response. This can be used by forward (and maybe proxy) to
implement DoH client support.

Signed-off-by: Miek Gieben <miek@miek.nl>

* lint

Signed-off-by: Miek Gieben <miek@miek.nl>

* ... and make it compile

Signed-off-by: Miek Gieben <miek@miek.nl>
This commit is contained in:
Miek Gieben
2018-07-07 08:22:07 +01:00
committed by GitHub
parent bc50901234
commit 30a788fd3a
5 changed files with 175 additions and 134 deletions
Download Patch File Download Diff File Expand all files Collapse all files

51
core/dnsserver/https.go
View File

@@ -1,62 +1,11 @@
package dnsserver
import (
"encoding/base64"
"fmt"
"io/ioutil"
"net"
"net/http"
"github.com/coredns/coredns/plugin/pkg/nonwriter"
"github.com/miekg/dns"
)
// mimeTypeDOH is the DoH mimetype that should be used.
const mimeTypeDOH = "application/dns-message"
// pathDOH is the URL path that should be used.
const pathDOH = "/dns-query"
// postRequestToMsg extracts the dns message from the request body.
func postRequestToMsg(req *http.Request) (*dns.Msg, error) {
defer req.Body.Close()
buf, err := ioutil.ReadAll(req.Body)
if err != nil {
return nil, err
}
m := new(dns.Msg)
err = m.Unpack(buf)
return m, err
}
// getRequestToMsg extract the dns message from the GET request.
func getRequestToMsg(req *http.Request) (*dns.Msg, error) {
values := req.URL.Query()
b64, ok := values["dns"]
if !ok {
return nil, fmt.Errorf("no 'dns' query parameter found")
}
if len(b64) != 1 {
return nil, fmt.Errorf("multiple 'dns' query values found")
}
return base64ToMsg(b64[0])
}
func base64ToMsg(b64 string) (*dns.Msg, error) {
buf, err := b64Enc.DecodeString(b64)
if err != nil {
return nil, err
}
m := new(dns.Msg)
err = m.Unpack(buf)
return m, err
}
var b64Enc = base64.RawURLEncoding
// DoHWriter is a nonwriter.Writer that adds more specific LocalAddr and RemoteAddr methods.
type DoHWriter struct {
nonwriter.Writer