Update protobufs to 8d92cf5fc15a4382f8964b08e1f42a

This syncs the protobuf version with the one that is used with
containerd.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

hack/vendor.sh

@@ -67,7 +67,7 @@ clone git github.com/seccomp/libseccomp-golang 1b506fc7c24eec5a3693cdcbed40d9c22
 clone git github.com/coreos/go-systemd v4
 clone git github.com/godbus/dbus v4.0.0
 clone git github.com/syndtr/gocapability 2c00daeb6c3b45114c80ac44119e7b8801fdd852
-clone git github.com/golang/protobuf 68415e7123da32b07eab49c96d2c4d6158360e9b
+clone git github.com/golang/protobuf 8d92cf5fc15a4382f8964b08e1f42a75c0591aa3
 
 # gelf logging driver deps
 clone git github.com/Graylog2/go-gelf aab2f594e4585d43468ac57287b0dece9d806883

vendor/src/github.com/golang/protobuf/proto/Makefile

@@ -39,5 +39,5 @@ test: install generate-test-pbs
 generate-test-pbs:
 	make install
 	make -C testdata
-	protoc --go_out=Mtestdata/test.proto=github.com/golang/protobuf/proto/testdata:. proto3_proto/proto3.proto
+	protoc --go_out=Mtestdata/test.proto=github.com/golang/protobuf/proto/testdata,Mgoogle/protobuf/any.proto=github.com/golang/protobuf/ptypes/any:. proto3_proto/proto3.proto
 	make

vendor/src/github.com/golang/protobuf/proto/decode.go

@@ -768,10 +768,11 @@ func (o *Buffer) dec_new_map(p *Properties, base structPointer) error {
 		}
 	}
 	keyelem, valelem := keyptr.Elem(), valptr.Elem()
-	if !keyelem.IsValid() || !valelem.IsValid() {
-		// We did not decode the key or the value in the map entry.
-		// Either way, it's an invalid map entry.
-		return fmt.Errorf("proto: bad map data: missing key/val")
+	if !keyelem.IsValid() {
+		keyelem = reflect.Zero(p.mtype.Key())
+	}
+	if !valelem.IsValid() {
+		valelem = reflect.Zero(p.mtype.Elem())
 	}
 
 	v.SetMapIndex(keyelem, valelem)

vendor/src/github.com/golang/protobuf/proto/encode.go

@@ -64,6 +64,10 @@ var (
 	// a struct with a repeated field containing a nil element.
 	errRepeatedHasNil = errors.New("proto: repeated field has nil element")
 
+	// errOneofHasNil is the error returned if Marshal is called with
+	// a struct with a oneof field containing a nil element.
+	errOneofHasNil = errors.New("proto: oneof field has nil value")
+
 	// ErrNil is the error returned if Marshal is called with nil.
 	ErrNil = errors.New("proto: Marshal called with nil")
 )
@@ -1222,7 +1226,9 @@ func (o *Buffer) enc_struct(prop *StructProperties, base structPointer) error {
 	// Do oneof fields.
 	if prop.oneofMarshaler != nil {
 		m := structPointer_Interface(base, prop.stype).(Message)
-		if err := prop.oneofMarshaler(m, o); err != nil {
+		if err := prop.oneofMarshaler(m, o); err == ErrNil {
+			return errOneofHasNil
+		} else if err != nil {
 			return err
 		}
 	}

vendor/src/github.com/golang/protobuf/proto/equal.go

@@ -50,7 +50,9 @@ Equality is defined in this way:
     are equal, and extensions sets are equal.
   - Two set scalar fields are equal iff their values are equal.
     If the fields are of a floating-point type, remember that
-    NaN != x for all x, including NaN.
+    NaN != x for all x, including NaN. If the message is defined
+    in a proto3 .proto file, fields are not "set"; specifically,
+    zero length proto3 "bytes" fields are equal (nil == {}).
   - Two repeated fields are equal iff their lengths are the same,
     and their corresponding elements are equal (a "bytes" field,
     although represented by []byte, is not a repeated field)
@@ -88,6 +90,7 @@ func Equal(a, b Message) bool {
 
 // v1 and v2 are known to have the same type.
 func equalStruct(v1, v2 reflect.Value) bool {
+	sprop := GetProperties(v1.Type())
 	for i := 0; i < v1.NumField(); i++ {
 		f := v1.Type().Field(i)
 		if strings.HasPrefix(f.Name, "XXX_") {
@@ -113,7 +116,7 @@ func equalStruct(v1, v2 reflect.Value) bool {
 			}
 			f1, f2 = f1.Elem(), f2.Elem()
 		}
-		if !equalAny(f1, f2) {
+		if !equalAny(f1, f2, sprop.Prop[i]) {
 			return false
 		}
 	}
@@ -140,7 +143,8 @@ func equalStruct(v1, v2 reflect.Value) bool {
 }
 
 // v1 and v2 are known to have the same type.
-func equalAny(v1, v2 reflect.Value) bool {
+// prop may be nil.
+func equalAny(v1, v2 reflect.Value, prop *Properties) bool {
 	if v1.Type() == protoMessageType {
 		m1, _ := v1.Interface().(Message)
 		m2, _ := v2.Interface().(Message)
@@ -163,7 +167,7 @@ func equalAny(v1, v2 reflect.Value) bool {
 		if e1.Type() != e2.Type() {
 			return false
 		}
-		return equalAny(e1, e2)
+		return equalAny(e1, e2, nil)
 	case reflect.Map:
 		if v1.Len() != v2.Len() {
 			return false
@@ -174,16 +178,22 @@ func equalAny(v1, v2 reflect.Value) bool {
 				// This key was not found in the second map.
 				return false
 			}
-			if !equalAny(v1.MapIndex(key), val2) {
+			if !equalAny(v1.MapIndex(key), val2, nil) {
 				return false
 			}
 		}
 		return true
 	case reflect.Ptr:
-		return equalAny(v1.Elem(), v2.Elem())
+		return equalAny(v1.Elem(), v2.Elem(), prop)
 	case reflect.Slice:
 		if v1.Type().Elem().Kind() == reflect.Uint8 {
 			// short circuit: []byte
+
+			// Edge case: if this is in a proto3 message, a zero length
+			// bytes field is considered the zero value.
+			if prop != nil && prop.proto3 && v1.Len() == 0 && v2.Len() == 0 {
+				return true
+			}
 			if v1.IsNil() != v2.IsNil() {
 				return false
 			}
@@ -194,7 +204,7 @@ func equalAny(v1, v2 reflect.Value) bool {
 			return false
 		}
 		for i := 0; i < v1.Len(); i++ {
-			if !equalAny(v1.Index(i), v2.Index(i)) {
+			if !equalAny(v1.Index(i), v2.Index(i), prop) {
 				return false
 			}
 		}
@@ -229,7 +239,7 @@ func equalExtensions(base reflect.Type, em1, em2 map[int32]Extension) bool {
 
 		if m1 != nil && m2 != nil {
 			// Both are unencoded.
-			if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2)) {
+			if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
 				return false
 			}
 			continue
@@ -257,7 +267,7 @@ func equalExtensions(base reflect.Type, em1, em2 map[int32]Extension) bool {
 			log.Printf("proto: badly encoded extension %d of %v: %v", extNum, base, err)
 			return false
 		}
-		if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2)) {
+		if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
 			return false
 		}
 	}

vendor/src/github.com/golang/protobuf/proto/lib.go

@@ -70,6 +70,12 @@ for a protocol buffer variable v:
 	with distinguished wrapper types for each possible field value.
   - Marshal and Unmarshal are functions to encode and decode the wire format.
 
+When the .proto file specifies `syntax="proto3"`, there are some differences:
+
+  - Non-repeated fields of non-message type are values instead of pointers.
+  - Getters are only generated for message and oneof fields.
+  - Enum types do not get an Enum method.
+
 The simplest way to describe this is to see an example.
 Given file test.proto, containing
 
@@ -229,6 +235,7 @@ To create and play with a Test object:
 		test := &pb.Test{
 			Label: proto.String("hello"),
 			Type:  proto.Int32(17),
+			Reps:  []int64{1, 2, 3},
 			Optionalgroup: &pb.Test_OptionalGroup{
 				RequiredField: proto.String("good bye"),
 			},
@@ -881,3 +888,7 @@ func isProto3Zero(v reflect.Value) bool {
 	}
 	return false
 }
+
+// ProtoPackageIsVersion1 is referenced from generated protocol buffer files
+// to assert that that code is compatible with this version of the proto package.
+const ProtoPackageIsVersion1 = true

vendor/src/github.com/golang/protobuf/proto/properties.go

@@ -173,6 +173,7 @@ func (sp *StructProperties) Swap(i, j int) { sp.order[i], sp.order[j] = sp.order
 type Properties struct {
 	Name     string // name of the field, for error messages
 	OrigName string // original name before protocol compiler (always set)
+	JSONName string // name to use for JSON; determined by protoc
 	Wire     string
 	WireType int
 	Tag      int
@@ -229,8 +230,9 @@ func (p *Properties) String() string {
 	if p.Packed {
 		s += ",packed"
 	}
-	if p.OrigName != p.Name {
-		s += ",name=" + p.OrigName
+	s += ",name=" + p.OrigName
+	if p.JSONName != p.OrigName {
+		s += ",json=" + p.JSONName
 	}
 	if p.proto3 {
 		s += ",proto3"
@@ -310,6 +312,8 @@ func (p *Properties) Parse(s string) {
 			p.Packed = true
 		case strings.HasPrefix(f, "name="):
 			p.OrigName = f[5:]
+		case strings.HasPrefix(f, "json="):
+			p.JSONName = f[5:]
 		case strings.HasPrefix(f, "enum="):
 			p.Enum = f[5:]
 		case f == "proto3":

vendor/src/github.com/golang/protobuf/proto/text.go

@@ -175,7 +175,93 @@ type raw interface {
 	Bytes() []byte
 }
 
-func writeStruct(w *textWriter, sv reflect.Value) error {
+func requiresQuotes(u string) bool {
+	// When type URL contains any characters except [0-9A-Za-z./\-]*, it must be quoted.
+	for _, ch := range u {
+		switch {
+		case ch == '.' || ch == '/' || ch == '_':
+			continue
+		case '0' <= ch && ch <= '9':
+			continue
+		case 'A' <= ch && ch <= 'Z':
+			continue
+		case 'a' <= ch && ch <= 'z':
+			continue
+		default:
+			return true
+		}
+	}
+	return false
+}
+
+// isAny reports whether sv is a google.protobuf.Any message
+func isAny(sv reflect.Value) bool {
+	type wkt interface {
+		XXX_WellKnownType() string
+	}
+	t, ok := sv.Addr().Interface().(wkt)
+	return ok && t.XXX_WellKnownType() == "Any"
+}
+
+// writeProto3Any writes an expanded google.protobuf.Any message.
+//
+// It returns (false, nil) if sv value can't be unmarshaled (e.g. because
+// required messages are not linked in).
+//
+// It returns (true, error) when sv was written in expanded format or an error
+// was encountered.
+func (tm *TextMarshaler) writeProto3Any(w *textWriter, sv reflect.Value) (bool, error) {
+	turl := sv.FieldByName("TypeUrl")
+	val := sv.FieldByName("Value")
+	if !turl.IsValid() || !val.IsValid() {
+		return true, errors.New("proto: invalid google.protobuf.Any message")
+	}
+
+	b, ok := val.Interface().([]byte)
+	if !ok {
+		return true, errors.New("proto: invalid google.protobuf.Any message")
+	}
+
+	parts := strings.Split(turl.String(), "/")
+	mt := MessageType(parts[len(parts)-1])
+	if mt == nil {
+		return false, nil
+	}
+	m := reflect.New(mt.Elem())
+	if err := Unmarshal(b, m.Interface().(Message)); err != nil {
+		return false, nil
+	}
+	w.Write([]byte("["))
+	u := turl.String()
+	if requiresQuotes(u) {
+		writeString(w, u)
+	} else {
+		w.Write([]byte(u))
+	}
+	if w.compact {
+		w.Write([]byte("]:<"))
+	} else {
+		w.Write([]byte("]: <\n"))
+		w.ind++
+	}
+	if err := tm.writeStruct(w, m.Elem()); err != nil {
+		return true, err
+	}
+	if w.compact {
+		w.Write([]byte("> "))
+	} else {
+		w.ind--
+		w.Write([]byte(">\n"))
+	}
+	return true, nil
+}
+
+func (tm *TextMarshaler) writeStruct(w *textWriter, sv reflect.Value) error {
+	if tm.ExpandAny && isAny(sv) {
+		if canExpand, err := tm.writeProto3Any(w, sv); canExpand {
+			return err
+		}
+	}
 	st := sv.Type()
 	sprops := GetProperties(st)
 	for i := 0; i < sv.NumField(); i++ {
@@ -227,7 +313,7 @@ func writeStruct(w *textWriter, sv reflect.Value) error {
 					}
 					continue
 				}
-				if err := writeAny(w, v, props); err != nil {
+				if err := tm.writeAny(w, v, props); err != nil {
 					return err
 				}
 				if err := w.WriteByte('\n'); err != nil {
@@ -269,7 +355,7 @@ func writeStruct(w *textWriter, sv reflect.Value) error {
 						return err
 					}
 				}
-				if err := writeAny(w, key, props.mkeyprop); err != nil {
+				if err := tm.writeAny(w, key, props.mkeyprop); err != nil {
 					return err
 				}
 				if err := w.WriteByte('\n'); err != nil {
@@ -286,7 +372,7 @@ func writeStruct(w *textWriter, sv reflect.Value) error {
 							return err
 						}
 					}
-					if err := writeAny(w, val, props.mvalprop); err != nil {
+					if err := tm.writeAny(w, val, props.mvalprop); err != nil {
 						return err
 					}
 					if err := w.WriteByte('\n'); err != nil {
@@ -358,7 +444,7 @@ func writeStruct(w *textWriter, sv reflect.Value) error {
 		}
 
 		// Enums have a String method, so writeAny will work fine.
-		if err := writeAny(w, fv, props); err != nil {
+		if err := tm.writeAny(w, fv, props); err != nil {
 			return err
 		}
 
@@ -370,7 +456,7 @@ func writeStruct(w *textWriter, sv reflect.Value) error {
 	// Extensions (the XXX_extensions field).
 	pv := sv.Addr()
 	if pv.Type().Implements(extendableProtoType) {
-		if err := writeExtensions(w, pv); err != nil {
+		if err := tm.writeExtensions(w, pv); err != nil {
 			return err
 		}
 	}
@@ -400,7 +486,7 @@ func writeRaw(w *textWriter, b []byte) error {
 }
 
 // writeAny writes an arbitrary field.
-func writeAny(w *textWriter, v reflect.Value, props *Properties) error {
+func (tm *TextMarshaler) writeAny(w *textWriter, v reflect.Value, props *Properties) error {
 	v = reflect.Indirect(v)
 
 	// Floats have special cases.
@@ -449,15 +535,15 @@ func writeAny(w *textWriter, v reflect.Value, props *Properties) error {
 			}
 		}
 		w.indent()
-		if tm, ok := v.Interface().(encoding.TextMarshaler); ok {
-			text, err := tm.MarshalText()
+		if etm, ok := v.Interface().(encoding.TextMarshaler); ok {
+			text, err := etm.MarshalText()
 			if err != nil {
 				return err
 			}
 			if _, err = w.Write(text); err != nil {
 				return err
 			}
-		} else if err := writeStruct(w, v); err != nil {
+		} else if err := tm.writeStruct(w, v); err != nil {
 			return err
 		}
 		w.unindent()
@@ -601,7 +687,7 @@ func (s int32Slice) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
 
 // writeExtensions writes all the extensions in pv.
 // pv is assumed to be a pointer to a protocol message struct that is extendable.
-func writeExtensions(w *textWriter, pv reflect.Value) error {
+func (tm *TextMarshaler) writeExtensions(w *textWriter, pv reflect.Value) error {
 	emap := extensionMaps[pv.Type().Elem()]
 	ep := pv.Interface().(extendableProto)
 
@@ -636,13 +722,13 @@ func writeExtensions(w *textWriter, pv reflect.Value) error {
 
 		// Repeated extensions will appear as a slice.
 		if !desc.repeated() {
-			if err := writeExtension(w, desc.Name, pb); err != nil {
+			if err := tm.writeExtension(w, desc.Name, pb); err != nil {
 				return err
 			}
 		} else {
 			v := reflect.ValueOf(pb)
 			for i := 0; i < v.Len(); i++ {
-				if err := writeExtension(w, desc.Name, v.Index(i).Interface()); err != nil {
+				if err := tm.writeExtension(w, desc.Name, v.Index(i).Interface()); err != nil {
 					return err
 				}
 			}
@@ -651,7 +737,7 @@ func writeExtensions(w *textWriter, pv reflect.Value) error {
 	return nil
 }
 
-func writeExtension(w *textWriter, name string, pb interface{}) error {
+func (tm *TextMarshaler) writeExtension(w *textWriter, name string, pb interface{}) error {
 	if _, err := fmt.Fprintf(w, "[%s]:", name); err != nil {
 		return err
 	}
@@ -660,7 +746,7 @@ func writeExtension(w *textWriter, name string, pb interface{}) error {
 			return err
 		}
 	}
-	if err := writeAny(w, reflect.ValueOf(pb), nil); err != nil {
+	if err := tm.writeAny(w, reflect.ValueOf(pb), nil); err != nil {
 		return err
 	}
 	if err := w.WriteByte('\n'); err != nil {
@@ -685,7 +771,15 @@ func (w *textWriter) writeIndent() {
 	w.complete = false
 }
 
-func marshalText(w io.Writer, pb Message, compact bool) error {
+// TextMarshaler is a configurable text format marshaler.
+type TextMarshaler struct {
+	Compact   bool // use compact text format (one line).
+	ExpandAny bool // expand google.protobuf.Any messages of known types
+}
+
+// Marshal writes a given protocol buffer in text format.
+// The only errors returned are from w.
+func (tm *TextMarshaler) Marshal(w io.Writer, pb Message) error {
 	val := reflect.ValueOf(pb)
 	if pb == nil || val.IsNil() {
 		w.Write([]byte("<nil>"))
@@ -700,11 +794,11 @@ func marshalText(w io.Writer, pb Message, compact bool) error {
 	aw := &textWriter{
 		w:        ww,
 		complete: true,
-		compact:  compact,
+		compact:  tm.Compact,
 	}
 
-	if tm, ok := pb.(encoding.TextMarshaler); ok {
-		text, err := tm.MarshalText()
+	if etm, ok := pb.(encoding.TextMarshaler); ok {
+		text, err := etm.MarshalText()
 		if err != nil {
 			return err
 		}
@@ -718,7 +812,7 @@ func marshalText(w io.Writer, pb Message, compact bool) error {
 	}
 	// Dereference the received pointer so we don't have outer < and >.
 	v := reflect.Indirect(val)
-	if err := writeStruct(aw, v); err != nil {
+	if err := tm.writeStruct(aw, v); err != nil {
 		return err
 	}
 	if bw != nil {
@@ -727,25 +821,29 @@ func marshalText(w io.Writer, pb Message, compact bool) error {
 	return nil
 }
 
+// Text is the same as Marshal, but returns the string directly.
+func (tm *TextMarshaler) Text(pb Message) string {
+	var buf bytes.Buffer
+	tm.Marshal(&buf, pb)
+	return buf.String()
+}
+
+var (
+	defaultTextMarshaler = TextMarshaler{}
+	compactTextMarshaler = TextMarshaler{Compact: true}
+)
+
+// TODO: consider removing some of the Marshal functions below.
+
 // MarshalText writes a given protocol buffer in text format.
 // The only errors returned are from w.
-func MarshalText(w io.Writer, pb Message) error {
-	return marshalText(w, pb, false)
-}
+func MarshalText(w io.Writer, pb Message) error { return defaultTextMarshaler.Marshal(w, pb) }
 
 // MarshalTextString is the same as MarshalText, but returns the string directly.
-func MarshalTextString(pb Message) string {
-	var buf bytes.Buffer
-	marshalText(&buf, pb, false)
-	return buf.String()
-}
+func MarshalTextString(pb Message) string { return defaultTextMarshaler.Text(pb) }
 
 // CompactText writes a given protocol buffer in compact text format (one line).
-func CompactText(w io.Writer, pb Message) error { return marshalText(w, pb, true) }
+func CompactText(w io.Writer, pb Message) error { return compactTextMarshaler.Marshal(w, pb) }
 
 // CompactTextString is the same as CompactText, but returns the string directly.
-func CompactTextString(pb Message) string {
-	var buf bytes.Buffer
-	marshalText(&buf, pb, true)
-	return buf.String()
-}
+func CompactTextString(pb Message) string { return compactTextMarshaler.Text(pb) }

vendor/src/github.com/golang/protobuf/proto/text_parser.go

@@ -119,6 +119,14 @@ func isWhitespace(c byte) bool {
 	return false
 }
 
+func isQuote(c byte) bool {
+	switch c {
+	case '"', '\'':
+		return true
+	}
+	return false
+}
+
 func (p *textParser) skipWhitespace() {
 	i := 0
 	for i < len(p.s) && (isWhitespace(p.s[i]) || p.s[i] == '#') {
@@ -155,7 +163,7 @@ func (p *textParser) advance() {
 	p.cur.offset, p.cur.line = p.offset, p.line
 	p.cur.unquoted = ""
 	switch p.s[0] {
-	case '<', '>', '{', '}', ':', '[', ']', ';', ',':
+	case '<', '>', '{', '}', ':', '[', ']', ';', ',', '/':
 		// Single symbol
 		p.cur.value, p.s = p.s[0:1], p.s[1:len(p.s)]
 	case '"', '\'':
@@ -333,13 +341,13 @@ func (p *textParser) next() *token {
 	p.advance()
 	if p.done {
 		p.cur.value = ""
-	} else if len(p.cur.value) > 0 && p.cur.value[0] == '"' {
+	} else if len(p.cur.value) > 0 && isQuote(p.cur.value[0]) {
 		// Look for multiple quoted strings separated by whitespace,
 		// and concatenate them.
 		cat := p.cur
 		for {
 			p.skipWhitespace()
-			if p.done || p.s[0] != '"' {
+			if p.done || !isQuote(p.s[0]) {
 				break
 			}
 			p.advance()
@@ -443,7 +451,10 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 	fieldSet := make(map[string]bool)
 	// A struct is a sequence of "name: value", terminated by one of
 	// '>' or '}', or the end of the input.  A name may also be
-	// "[extension]".
+	// "[extension]" or "[type/url]".
+	//
+	// The whole struct can also be an expanded Any message, like:
+	// [type/url] < ... struct contents ... >
 	for {
 		tok := p.next()
 		if tok.err != nil {
@@ -453,33 +464,66 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 			break
 		}
 		if tok.value == "[" {
-			// Looks like an extension.
+			// Looks like an extension or an Any.
 			//
 			// TODO: Check whether we need to handle
 			// namespace rooted names (e.g. ".something.Foo").
-			tok = p.next()
-			if tok.err != nil {
-				return tok.err
+			extName, err := p.consumeExtName()
+			if err != nil {
+				return err
 			}
+
+			if s := strings.LastIndex(extName, "/"); s >= 0 {
+				// If it contains a slash, it's an Any type URL.
+				messageName := extName[s+1:]
+				mt := MessageType(messageName)
+				if mt == nil {
+					return p.errorf("unrecognized message %q in google.protobuf.Any", messageName)
+				}
+				tok = p.next()
+				if tok.err != nil {
+					return tok.err
+				}
+				// consume an optional colon
+				if tok.value == ":" {
+					tok = p.next()
+					if tok.err != nil {
+						return tok.err
+					}
+				}
+				var terminator string
+				switch tok.value {
+				case "<":
+					terminator = ">"
+				case "{":
+					terminator = "}"
+				default:
+					return p.errorf("expected '{' or '<', found %q", tok.value)
+				}
+				v := reflect.New(mt.Elem())
+				if pe := p.readStruct(v.Elem(), terminator); pe != nil {
+					return pe
+				}
+				b, err := Marshal(v.Interface().(Message))
+				if err != nil {
+					return p.errorf("failed to marshal message of type %q: %v", messageName, err)
+				}
+				sv.FieldByName("TypeUrl").SetString(extName)
+				sv.FieldByName("Value").SetBytes(b)
+				continue
+			}
+
 			var desc *ExtensionDesc
 			// This could be faster, but it's functional.
 			// TODO: Do something smarter than a linear scan.
 			for _, d := range RegisteredExtensions(reflect.New(st).Interface().(Message)) {
-				if d.Name == tok.value {
+				if d.Name == extName {
 					desc = d
 					break
 				}
 			}
 			if desc == nil {
-				return p.errorf("unrecognized extension %q", tok.value)
-			}
-			// Check the extension terminator.
-			tok = p.next()
-			if tok.err != nil {
-				return tok.err
-			}
-			if tok.value != "]" {
-				return p.errorf("unrecognized extension terminator %q", tok.value)
+				return p.errorf("unrecognized extension %q", extName)
 			}
 
 			props := &Properties{}
@@ -635,6 +679,35 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 	return reqFieldErr
 }
 
+// consumeExtName consumes extension name or expanded Any type URL and the
+// following ']'. It returns the name or URL consumed.
+func (p *textParser) consumeExtName() (string, error) {
+	tok := p.next()
+	if tok.err != nil {
+		return "", tok.err
+	}
+
+	// If extension name or type url is quoted, it's a single token.
+	if len(tok.value) > 2 && isQuote(tok.value[0]) && tok.value[len(tok.value)-1] == tok.value[0] {
+		name, err := unquoteC(tok.value[1:len(tok.value)-1], rune(tok.value[0]))
+		if err != nil {
+			return "", err
+		}
+		return name, p.consumeToken("]")
+	}
+
+	// Consume everything up to "]"
+	var parts []string
+	for tok.value != "]" {
+		parts = append(parts, tok.value)
+		tok = p.next()
+		if tok.err != nil {
+			return "", p.errorf("unrecognized type_url or extension name: %s", tok.err)
+		}
+	}
+	return strings.Join(parts, ""), nil
+}
+
 // consumeOptionalSeparator consumes an optional semicolon or comma.
 // It is used in readStruct to provide backward compatibility.
 func (p *textParser) consumeOptionalSeparator() error {