5 files changed, 92 insertions, 19 deletions
diff --git a/vendor/github.com/miekg/dns/README.md b/vendor/github.com/miekg/dns/README.md
index 58275db3b..10ddda142 100644
--- a/vendor/github.com/miekg/dns/README.md
+++ b/vendor/github.com/miekg/dns/README.md
@@ -188,6 +188,9 @@ Example programs can be found in the `github.com/miekg/exdns` repository.
 * 8777 - DNS Reverse IP Automatic Multicast Tunneling (AMT) Discovery
 * 8914 - Extended DNS Errors
 * 8976 - Message Digest for DNS Zones (ZONEMD RR)
+* 9460 - Service Binding and Parameter Specification via the DNS
+* 9461 - Service Binding Mapping for DNS Servers
+* 9462 - Discovery of Designated Resolvers
 
 ## Loosely Based Upon
 
diff --git a/vendor/github.com/miekg/dns/scan_rr.go b/vendor/github.com/miekg/dns/scan_rr.go
index 7d1ade7d8..c1a76995e 100644
--- a/vendor/github.com/miekg/dns/scan_rr.go
+++ b/vendor/github.com/miekg/dns/scan_rr.go
@@ -55,7 +55,10 @@ func endingToTxtSlice(c *zlexer, errstr string) ([]string, *ParseError) {
 			sx := []string{}
 			p := 0
 			for {
-				i := escapedStringOffset(l.token[p:], 255)
+				i, ok := escapedStringOffset(l.token[p:], 255)
+				if !ok {
+					return nil, &ParseError{err: errstr, lex: l}
+				}
 				if i != -1 && p+i != len(l.token) {
 					sx = append(sx, l.token[p:p+i])
 				} else {
@@ -1919,29 +1922,36 @@ func (rr *APL) parse(c *zlexer, o string) *ParseError {
 
 // escapedStringOffset finds the offset within a string (which may contain escape
 // sequences) that corresponds to a certain byte offset. If the input offset is
-// out of bounds, -1 is returned.
-func escapedStringOffset(s string, byteOffset int) int {
-	if byteOffset == 0 {
-		return 0
+// out of bounds, -1 is returned (which is *not* considered an error).
+func escapedStringOffset(s string, desiredByteOffset int) (int, bool) {
+	if desiredByteOffset == 0 {
+		return 0, true
 	}
 
-	offset := 0
-	for i := 0; i < len(s); i++ {
-		offset += 1
+	currentByteOffset, i := 0, 0
+
+	for i < len(s) {
+		currentByteOffset += 1
 
 		// Skip escape sequences
 		if s[i] != '\\' {
-			// Not an escape sequence; nothing to do.
+			// Single plain byte, not an escape sequence.
+			i++
 		} else if isDDD(s[i+1:]) {
-			i += 3
+			// Skip backslash and DDD.
+			i += 4
+		} else if len(s[i+1:]) < 1 {
+			// No character following the backslash; that's an error.
+			return 0, false
 		} else {
-			i++
+			// Skip backslash and following byte.
+			i += 2
 		}
 
-		if offset >= byteOffset {
-			return i + 1
+		if currentByteOffset >= desiredByteOffset {
+			return i, true
 		}
 	}
 
-	return -1
+	return -1, true
 }
diff --git a/vendor/github.com/miekg/dns/server.go b/vendor/github.com/miekg/dns/server.go
index 0207d6da2..81580d1e5 100644
--- a/vendor/github.com/miekg/dns/server.go
+++ b/vendor/github.com/miekg/dns/server.go
@@ -188,6 +188,14 @@ type DecorateReader func(Reader) Reader
 // Implementations should never return a nil Writer.
 type DecorateWriter func(Writer) Writer
 
+// MsgInvalidFunc is a listener hook for observing incoming messages that were discarded
+// because they could not be parsed.
+// Every message that is read by a Reader will eventually be provided to the Handler,
+// rejected (or ignored) by the MsgAcceptFunc, or passed to this function.
+type MsgInvalidFunc func(m []byte, err error)
+
+func DefaultMsgInvalidFunc(m []byte, err error) {}
+
 // A Server defines parameters for running an DNS server.
 type Server struct {
 	// Address to listen on, ":dns" if empty.
@@ -233,6 +241,8 @@ type Server struct {
 	// AcceptMsgFunc will check the incoming message and will reject it early in the process.
 	// By default DefaultMsgAcceptFunc will be used.
 	MsgAcceptFunc MsgAcceptFunc
+	// MsgInvalidFunc is optional, will be called if a message is received but cannot be parsed.
+	MsgInvalidFunc MsgInvalidFunc
 
 	// Shutdown handling
 	lock     sync.RWMutex
@@ -277,6 +287,9 @@ func (srv *Server) init() {
 	if srv.MsgAcceptFunc == nil {
 		srv.MsgAcceptFunc = DefaultMsgAcceptFunc
 	}
+	if srv.MsgInvalidFunc == nil {
+		srv.MsgInvalidFunc = DefaultMsgInvalidFunc
+	}
 	if srv.Handler == nil {
 		srv.Handler = DefaultServeMux
 	}
@@ -531,6 +544,7 @@ func (srv *Server) serveUDP(l net.PacketConn) error {
 			if cap(m) == srv.UDPSize {
 				srv.udpPool.Put(m[:srv.UDPSize])
 			}
+			srv.MsgInvalidFunc(m, ErrShortRead)
 			continue
 		}
 		wg.Add(1)
@@ -611,6 +625,7 @@ func (srv *Server) serveUDPPacket(wg *sync.WaitGroup, m []byte, u net.PacketConn
 func (srv *Server) serveDNS(m []byte, w *response) {
 	dh, off, err := unpackMsgHdr(m, 0)
 	if err != nil {
+		srv.MsgInvalidFunc(m, err)
 		// Let client hang, they are sending crap; any reply can be used to amplify.
 		return
 	}
@@ -620,10 +635,12 @@ func (srv *Server) serveDNS(m []byte, w *response) {
 
 	switch action := srv.MsgAcceptFunc(dh); action {
 	case MsgAccept:
-		if req.unpack(dh, m, off) == nil {
+		err := req.unpack(dh, m, off)
+		if err == nil {
 			break
 		}
 
+		srv.MsgInvalidFunc(m, err)
 		fallthrough
 	case MsgReject, MsgRejectNotImplemented:
 		opcode := req.Opcode
diff --git a/vendor/github.com/miekg/dns/svcb.go b/vendor/github.com/miekg/dns/svcb.go
index c1a740b68..310c7d11f 100644
--- a/vendor/github.com/miekg/dns/svcb.go
+++ b/vendor/github.com/miekg/dns/svcb.go
@@ -14,7 +14,7 @@ import (
 // SVCBKey is the type of the keys used in the SVCB RR.
 type SVCBKey uint16
 
-// Keys defined in draft-ietf-dnsop-svcb-https-08 Section 14.3.2.
+// Keys defined in rfc9460
 const (
 	SVCB_MANDATORY SVCBKey = iota
 	SVCB_ALPN
@@ -23,7 +23,8 @@ const (
 	SVCB_IPV4HINT
 	SVCB_ECHCONFIG
 	SVCB_IPV6HINT
-	SVCB_DOHPATH // draft-ietf-add-svcb-dns-02 Section 9
+	SVCB_DOHPATH // rfc9461 Section 5
+	SVCB_OHTTP   // rfc9540 Section 8
 
 	svcb_RESERVED SVCBKey = 65535
 )
@@ -37,6 +38,7 @@ var svcbKeyToStringMap = map[SVCBKey]string{
 	SVCB_ECHCONFIG:       "ech",
 	SVCB_IPV6HINT:        "ipv6hint",
 	SVCB_DOHPATH:         "dohpath",
+	SVCB_OHTTP:           "ohttp",
 }
 
 var svcbStringToKeyMap = reverseSVCBKeyMap(svcbKeyToStringMap)
@@ -201,6 +203,8 @@ func makeSVCBKeyValue(key SVCBKey) SVCBKeyValue {
 		return new(SVCBIPv6Hint)
 	case SVCB_DOHPATH:
 		return new(SVCBDoHPath)
+	case SVCB_OHTTP:
+		return new(SVCBOhttp)
 	case svcb_RESERVED:
 		return nil
 	default:
@@ -771,8 +775,8 @@ func (s *SVCBIPv6Hint) copy() SVCBKeyValue {
 // SVCBDoHPath pair is used to indicate the URI template that the
 // clients may use to construct a DNS over HTTPS URI.
 //
-// See RFC xxxx (https://datatracker.ietf.org/doc/html/draft-ietf-add-svcb-dns-02)
-// and RFC yyyy (https://datatracker.ietf.org/doc/html/draft-ietf-add-ddr-06).
+// See RFC 9461 (https://datatracker.ietf.org/doc/html/rfc9461)
+// and RFC 9462 (https://datatracker.ietf.org/doc/html/rfc9462).
 //
 // A basic example of using the dohpath option together with the alpn
 // option to indicate support for DNS over HTTPS on a certain path:
@@ -816,6 +820,44 @@ func (s *SVCBDoHPath) copy() SVCBKeyValue {
 	}
 }
 
+// The "ohttp" SvcParamKey is used to indicate that a service described in a SVCB RR
+// can be accessed as a target using an associated gateway.
+// Both the presentation and wire-format values for the "ohttp" parameter MUST be empty.
+//
+// See RFC 9460 (https://datatracker.ietf.org/doc/html/rfc9460/)
+// and RFC 9230 (https://datatracker.ietf.org/doc/html/rfc9230/)
+//
+// A basic example of using the dohpath option together with the alpn
+// option to indicate support for DNS over HTTPS on a certain path:
+//
+//	s := new(dns.SVCB)
+//	s.Hdr = dns.RR_Header{Name: ".", Rrtype: dns.TypeSVCB, Class: dns.ClassINET}
+//	e := new(dns.SVCBAlpn)
+//	e.Alpn = []string{"h2", "h3"}
+//	p := new(dns.SVCBOhttp)
+//	s.Value = append(s.Value, e, p)
+type SVCBOhttp struct{}
+
+func (*SVCBOhttp) Key() SVCBKey          { return SVCB_OHTTP }
+func (*SVCBOhttp) copy() SVCBKeyValue    { return &SVCBOhttp{} }
+func (*SVCBOhttp) pack() ([]byte, error) { return []byte{}, nil }
+func (*SVCBOhttp) String() string        { return "" }
+func (*SVCBOhttp) len() int              { return 0 }
+
+func (*SVCBOhttp) unpack(b []byte) error {
+	if len(b) != 0 {
+		return errors.New("dns: svcbotthp: svcbotthp must have no value")
+	}
+	return nil
+}
+
+func (*SVCBOhttp) parse(b string) error {
+	if b != "" {
+		return errors.New("dns: svcbotthp: svcbotthp must have no value")
+	}
+	return nil
+}
+
 // SVCBLocal pair is intended for experimental/private use. The key is recommended
 // to be in the range [SVCB_PRIVATE_LOWER, SVCB_PRIVATE_UPPER].
 // Basic use pattern for creating a keyNNNNN option:
diff --git a/vendor/github.com/miekg/dns/xfr.go b/vendor/github.com/miekg/dns/xfr.go
index 2187c456d..5cfbb516a 100644
--- a/vendor/github.com/miekg/dns/xfr.go
+++ b/vendor/github.com/miekg/dns/xfr.go
@@ -209,6 +209,7 @@ func (t *Transfer) inIxfr(q *Msg, c chan *Envelope) {
 //	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()