coredns/core/dnsserver/https.go
Ondřej Benkovský c74c212bdf
prevent panics when using DoHWriter (#6120)
Signed-off-by: Ondřej Benkovský <ondrej.benkovsky@jamf.com>
2023-06-02 09:33:34 -04:00

65 lines
1.4 KiB
Go

package dnsserver
import (
"net"
"net/http"
"github.com/miekg/dns"
)
// DoHWriter is a dns.ResponseWriter that adds more specific LocalAddr and RemoteAddr methods.
type DoHWriter struct {
// raddr is the remote's address. This can be optionally set.
raddr net.Addr
// laddr is our address. This can be optionally set.
laddr net.Addr
// request is the HTTP request we're currently handling.
request *http.Request
// Msg is a response to be written to the client.
Msg *dns.Msg
}
// WriteMsg stores the message to be written to the client.
func (d *DoHWriter) WriteMsg(m *dns.Msg) error {
d.Msg = m
return nil
}
// Write stores the message to be written to the client.
func (d *DoHWriter) Write(b []byte) (int, error) {
d.Msg = new(dns.Msg)
return len(b), d.Msg.Unpack(b)
}
// RemoteAddr returns the remote address.
func (d *DoHWriter) RemoteAddr() net.Addr {
return d.raddr
}
// LocalAddr returns the local address.
func (d *DoHWriter) LocalAddr() net.Addr {
return d.laddr
}
// Request returns the HTTP request.
func (d *DoHWriter) Request() *http.Request {
return d.request
}
// Close no-op implementation.
func (d *DoHWriter) Close() error {
return nil
}
// TsigStatus no-op implementation.
func (d *DoHWriter) TsigStatus() error {
return nil
}
// TsigTimersOnly no-op implementation.
func (d *DoHWriter) TsigTimersOnly(_ bool) {}
// Hijack no-op implementation.
func (d *DoHWriter) Hijack() {}