1 files changed, 0 insertions, 287 deletions
diff --git a/vendor/github.com/miekg/dns/xfr.go b/vendor/github.com/miekg/dns/xfr.go
deleted file mode 100644
index 5cfbb516a..000000000
--- a/vendor/github.com/miekg/dns/xfr.go
+++ /dev/null
@@ -1,287 +0,0 @@
-package dns
-
-import (
-	"crypto/tls"
-	"fmt"
-	"time"
-)
-
-// Envelope is used when doing a zone transfer with a remote server.
-type Envelope struct {
-	RR    []RR  // The set of RRs in the answer section of the xfr reply message.
-	Error error // If something went wrong, this contains the error.
-}
-
-// A Transfer defines parameters that are used during a zone transfer.
-type Transfer struct {
-	*Conn
-	DialTimeout    time.Duration     // net.DialTimeout, defaults to 2 seconds
-	ReadTimeout    time.Duration     // net.Conn.SetReadTimeout value for connections, defaults to 2 seconds
-	WriteTimeout   time.Duration     // net.Conn.SetWriteTimeout value for connections, defaults to 2 seconds
-	TsigProvider   TsigProvider      // An implementation of the TsigProvider interface. If defined it replaces TsigSecret and is used for all TSIG operations.
-	TsigSecret     map[string]string // Secret(s) for Tsig map[<zonename>]<base64 secret>, zonename must be in canonical form (lowercase, fqdn, see RFC 4034 Section 6.2)
-	tsigTimersOnly bool
-	TLS            *tls.Config // TLS config. If Xfr over TLS will be attempted
-}
-
-func (t *Transfer) tsigProvider() TsigProvider {
-	if t.TsigProvider != nil {
-		return t.TsigProvider
-	}
-	if t.TsigSecret != nil {
-		return tsigSecretProvider(t.TsigSecret)
-	}
-	return nil
-}
-
-// TODO: Think we need to away to stop the transfer
-
-// In performs an incoming transfer with the server in a.
-// If you would like to set the source IP, or some other attribute
-// of a Dialer for a Transfer, you can do so by specifying the attributes
-// in the Transfer.Conn:
-//
-//	d := net.Dialer{LocalAddr: transfer_source}
-//	con, err := d.Dial("tcp", master)
-//	dnscon := &dns.Conn{Conn:con}
-//	transfer = &dns.Transfer{Conn: dnscon}
-//	channel, err := transfer.In(message, master)
-func (t *Transfer) In(q *Msg, a string) (env chan *Envelope, err error) {
-	switch q.Question[0].Qtype {
-	case TypeAXFR, TypeIXFR:
-	default:
-		return nil, &Error{"unsupported question type"}
-	}
-
-	timeout := dnsTimeout
-	if t.DialTimeout != 0 {
-		timeout = t.DialTimeout
-	}
-
-	if t.Conn == nil {
-		if t.TLS != nil {
-			t.Conn, err = DialTimeoutWithTLS("tcp-tls", a, t.TLS, timeout)
-		} else {
-			t.Conn, err = DialTimeout("tcp", a, timeout)
-		}
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	if err := t.WriteMsg(q); err != nil {
-		return nil, err
-	}
-
-	env = make(chan *Envelope)
-	switch q.Question[0].Qtype {
-	case TypeAXFR:
-		go t.inAxfr(q, env)
-	case TypeIXFR:
-		go t.inIxfr(q, env)
-	}
-
-	return env, nil
-}
-
-func (t *Transfer) inAxfr(q *Msg, c chan *Envelope) {
-	first := true
-	defer func() {
-		// First close the connection, then the channel. This allows functions blocked on
-		// the channel to assume that the connection is closed and no further operations are
-		// pending when they resume.
-		t.Close()
-		close(c)
-	}()
-	timeout := dnsTimeout
-	if t.ReadTimeout != 0 {
-		timeout = t.ReadTimeout
-	}
-	for {
-		t.Conn.SetReadDeadline(time.Now().Add(timeout))
-		in, err := t.ReadMsg()
-		if err != nil {
-			c <- &Envelope{nil, err}
-			return
-		}
-		if q.Id != in.Id {
-			c <- &Envelope{in.Answer, ErrId}
-			return
-		}
-		if first {
-			if in.Rcode != RcodeSuccess {
-				c <- &Envelope{in.Answer, &Error{err: fmt.Sprintf(errXFR, in.Rcode)}}
-				return
-			}
-			if !isSOAFirst(in) {
-				c <- &Envelope{in.Answer, ErrSoa}
-				return
-			}
-			first = !first
-			// only one answer that is SOA, receive more
-			if len(in.Answer) == 1 {
-				t.tsigTimersOnly = true
-				c <- &Envelope{in.Answer, nil}
-				continue
-			}
-		}
-
-		if !first {
-			t.tsigTimersOnly = true // Subsequent envelopes use this.
-			if isSOALast(in) {
-				c <- &Envelope{in.Answer, nil}
-				return
-			}
-			c <- &Envelope{in.Answer, nil}
-		}
-	}
-}
-
-func (t *Transfer) inIxfr(q *Msg, c chan *Envelope) {
-	var serial uint32 // The first serial seen is the current server serial
-	axfr := true
-	n := 0
-	qser := q.Ns[0].(*SOA).Serial
-	defer func() {
-		// First close the connection, then the channel. This allows functions blocked on
-		// the channel to assume that the connection is closed and no further operations are
-		// pending when they resume.
-		t.Close()
-		close(c)
-	}()
-	timeout := dnsTimeout
-	if t.ReadTimeout != 0 {
-		timeout = t.ReadTimeout
-	}
-	for {
-		t.SetReadDeadline(time.Now().Add(timeout))
-		in, err := t.ReadMsg()
-		if err != nil {
-			c <- &Envelope{nil, err}
-			return
-		}
-		if q.Id != in.Id {
-			c <- &Envelope{in.Answer, ErrId}
-			return
-		}
-		if in.Rcode != RcodeSuccess {
-			c <- &Envelope{in.Answer, &Error{err: fmt.Sprintf(errXFR, in.Rcode)}}
-			return
-		}
-		if n == 0 {
-			// Check if the returned answer is ok
-			if !isSOAFirst(in) {
-				c <- &Envelope{in.Answer, ErrSoa}
-				return
-			}
-			// This serial is important
-			serial = in.Answer[0].(*SOA).Serial
-			// Check if there are no changes in zone
-			if qser >= serial {
-				c <- &Envelope{in.Answer, nil}
-				return
-			}
-		}
-		// Now we need to check each message for SOA records, to see what we need to do
-		t.tsigTimersOnly = true
-		for _, rr := range in.Answer {
-			if v, ok := rr.(*SOA); ok {
-				if v.Serial == serial {
-					n++
-					// quit if it's a full axfr or the servers' SOA is repeated the third time
-					if axfr && n == 2 || n == 3 {
-						c <- &Envelope{in.Answer, nil}
-						return
-					}
-				} else if axfr {
-					// it's an ixfr
-					axfr = false
-				}
-			}
-		}
-		c <- &Envelope{in.Answer, nil}
-	}
-}
-
-// Out performs an outgoing transfer with the client connecting in w.
-// Basic use pattern:
-//
-//	ch := make(chan *dns.Envelope)
-//	tr := new(dns.Transfer)
-//	var wg sync.WaitGroup
-//	wg.Add(1)
-//	go func() {
-//		tr.Out(w, r, ch)
-//		wg.Done()
-//	}()
-//	ch <- &dns.Envelope{RR: []dns.RR{soa, rr1, rr2, rr3, soa}}
-//	close(ch)
-//	wg.Wait() // wait until everything is written out
-//	w.Close() // close connection
-//
-// The server is responsible for sending the correct sequence of RRs through the channel ch.
-func (t *Transfer) Out(w ResponseWriter, q *Msg, ch chan *Envelope) error {
-	for x := range ch {
-		r := new(Msg)
-		// Compress?
-		r.SetReply(q)
-		r.Authoritative = true
-		// assume it fits TODO(miek): fix
-		r.Answer = append(r.Answer, x.RR...)
-		if tsig := q.IsTsig(); tsig != nil && w.TsigStatus() == nil {
-			r.SetTsig(tsig.Hdr.Name, tsig.Algorithm, tsig.Fudge, time.Now().Unix())
-		}
-		if err := w.WriteMsg(r); err != nil {
-			return err
-		}
-		w.TsigTimersOnly(true)
-	}
-	return nil
-}
-
-// ReadMsg reads a message from the transfer connection t.
-func (t *Transfer) ReadMsg() (*Msg, error) {
-	m := new(Msg)
-	p := make([]byte, MaxMsgSize)
-	n, err := t.Read(p)
-	if err != nil && n == 0 {
-		return nil, err
-	}
-	p = p[:n]
-	if err := m.Unpack(p); err != nil {
-		return nil, err
-	}
-	if ts, tp := m.IsTsig(), t.tsigProvider(); ts != nil && tp != nil {
-		// Need to work on the original message p, as that was used to calculate the tsig.
-		err = TsigVerifyWithProvider(p, tp, t.tsigRequestMAC, t.tsigTimersOnly)
-		t.tsigRequestMAC = ts.MAC
-	}
-	return m, err
-}
-
-// WriteMsg writes a message through the transfer connection t.
-func (t *Transfer) WriteMsg(m *Msg) (err error) {
-	var out []byte
-	if ts, tp := m.IsTsig(), t.tsigProvider(); ts != nil && tp != nil {
-		out, t.tsigRequestMAC, err = TsigGenerateWithProvider(m, tp, t.tsigRequestMAC, t.tsigTimersOnly)
-	} else {
-		out, err = m.Pack()
-	}
-	if err != nil {
-		return err
-	}
-	_, err = t.Write(out)
-	return err
-}
-
-func isSOAFirst(in *Msg) bool {
-	return len(in.Answer) > 0 &&
-		in.Answer[0].Header().Rrtype == TypeSOA
-}
-
-func isSOALast(in *Msg) bool {
-	return len(in.Answer) > 0 &&
-		in.Answer[len(in.Answer)-1].Header().Rrtype == TypeSOA
-}
-
-const errXFR = "bad xfr rcode: %d"