text: package dns
  
  import (
  	"encoding/base64"
  	"net"
  	"strconv"
  	"strings"
  )
  
  type parserFunc struct {
  	// Func defines the function that parses the tokens and returns the RR
  	// or an error. The last string contains any comments in the line as
  	// they returned by the lexer as well.
  	Func func(h RR_Header, c chan lex, origin string, file string) (RR, *ParseError, string)
  	// Signals if the RR ending is of variable length, like TXT or records
  	// that have Hexadecimal or Base64 as their last element in the Rdata. Records
  	// that have a fixed ending or for instance A, AAAA, SOA and etc.
  	Variable bool
  }
  
  // Parse the rdata of each rrtype.
  // All data from the channel c is either zString or zBlank.
  // After the rdata there may come a zBlank and then a zNewline
  // or immediately a zNewline. If this is not the case we flag
  // an *ParseError: garbage after rdata.
  func setRR(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	parserfunc, ok := typeToparserFunc[h.Rrtype]
  	if ok {
  		r, e, cm := parserfunc.Func(h, c, o, f)
  		if parserfunc.Variable {
  			return r, e, cm
  		}
  		if e != nil {
  			return nil, e, ""
  		}
  		e, cm = slurpRemainder(c, f)
  		if e != nil {
  			return nil, e, ""
  		}
  		return r, nil, cm
  	}
  	// RFC3957 RR (Unknown RR handling)
  	return setRFC3597(h, c, o, f)
  }
  
  // A remainder of the rdata with embedded spaces, return the parsed string (sans the spaces)
  // or an error
  func endingToString(c chan lex, errstr, f string) (string, *ParseError, string) {
  	s := ""
  	l := <-c // zString
  	for l.value != zNewline && l.value != zEOF {
  		if l.err {
  			return s, &ParseError{f, errstr, l}, ""
  		}
  		switch l.value {
  		case zString:
  			s += l.token
  		case zBlank: // Ok
  		default:
  			return "", &ParseError{f, errstr, l}, ""
  		}
  		l = <-c
  	}
  	return s, nil, l.comment
  }
  
  // A remainder of the rdata with embedded spaces, return the parsed string slice (sans the spaces)
  // or an error
  func endingToTxtSlice(c chan lex, errstr, f string) ([]string, *ParseError, string) {
  	// Get the remaining data until we see a zNewline
  	quote := false
  	l := <-c
  	var s []string
  	if l.err {
  		return s, &ParseError{f, errstr, l}, ""
  	}
  	switch l.value == zQuote {
  	case true: // A number of quoted string
  		s = make([]string, 0)
  		empty := true
  		for l.value != zNewline && l.value != zEOF {
  			if l.err {
  				return nil, &ParseError{f, errstr, l}, ""
  			}
  			switch l.value {
  			case zString:
  				empty = false
  				if len(l.token) > 255 {
  					// split up tokens that are larger than 255 into 255-chunks
  					sx := []string{}
  					p, i := 0, 255
  					for {
  						if i <= len(l.token) {
  							sx = append(sx, l.token[p:i])
  						} else {
  							sx = append(sx, l.token[p:])
  							break
  
  						}
  						p, i = p+255, i+255
  					}
  					s = append(s, sx...)
  					break
  				}
  
  				s = append(s, l.token)
  			case zBlank:
  				if quote {
  					// zBlank can only be seen in between txt parts.
  					return nil, &ParseError{f, errstr, l}, ""
  				}
  			case zQuote:
  				if empty && quote {
  					s = append(s, "")
  				}
  				quote = !quote
  				empty = true
  			default:
  				return nil, &ParseError{f, errstr, l}, ""
  			}
  			l = <-c
  		}
  		if quote {
  			return nil, &ParseError{f, errstr, l}, ""
  		}
  	case false: // Unquoted text record
  		s = make([]string, 1)
  		for l.value != zNewline && l.value != zEOF {
  			if l.err {
  				return s, &ParseError{f, errstr, l}, ""
  			}
  			s[0] += l.token
  			l = <-c
  		}
  	}
  	return s, nil, l.comment
  }
  
  func setA(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(A)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 { // Dynamic updates.
  		return rr, nil, ""
  	}
  	rr.A = net.ParseIP(l.token)
  	if rr.A == nil || l.err {
  		return nil, &ParseError{f, "bad A A", l}, ""
  	}
  	return rr, nil, ""
  }
  
  func setAAAA(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(AAAA)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	rr.AAAA = net.ParseIP(l.token)
  	if rr.AAAA == nil || l.err {
  		return nil, &ParseError{f, "bad AAAA AAAA", l}, ""
  	}
  	return rr, nil, ""
  }
  
  func setNS(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(NS)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Ns = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Ns = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad NS Ns", l}, ""
  	}
  	if rr.Ns[l.length-1] != '.' {
  		rr.Ns = appendOrigin(rr.Ns, o)
  	}
  	return rr, nil, ""
  }
  
  func setPTR(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(PTR)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Ptr = l.token
  	if l.length == 0 { // dynamic update rr.
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Ptr = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad PTR Ptr", l}, ""
  	}
  	if rr.Ptr[l.length-1] != '.' {
  		rr.Ptr = appendOrigin(rr.Ptr, o)
  	}
  	return rr, nil, ""
  }
  
  func setNSAPPTR(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(NSAPPTR)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Ptr = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Ptr = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad NSAP-PTR Ptr", l}, ""
  	}
  	if rr.Ptr[l.length-1] != '.' {
  		rr.Ptr = appendOrigin(rr.Ptr, o)
  	}
  	return rr, nil, ""
  }
  
  func setRP(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(RP)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Mbox = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Mbox = o
  	} else {
  		_, ok := IsDomainName(l.token)
  		if !ok || l.length == 0 || l.err {
  			return nil, &ParseError{f, "bad RP Mbox", l}, ""
  		}
  		if rr.Mbox[l.length-1] != '.' {
  			rr.Mbox = appendOrigin(rr.Mbox, o)
  		}
  	}
  	<-c // zBlank
  	l = <-c
  	rr.Txt = l.token
  	if l.token == "@" {
  		rr.Txt = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad RP Txt", l}, ""
  	}
  	if rr.Txt[l.length-1] != '.' {
  		rr.Txt = appendOrigin(rr.Txt, o)
  	}
  	return rr, nil, ""
  }
  
  func setMR(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(MR)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Mr = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Mr = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad MR Mr", l}, ""
  	}
  	if rr.Mr[l.length-1] != '.' {
  		rr.Mr = appendOrigin(rr.Mr, o)
  	}
  	return rr, nil, ""
  }
  
  func setMB(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(MB)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Mb = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Mb = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad MB Mb", l}, ""
  	}
  	if rr.Mb[l.length-1] != '.' {
  		rr.Mb = appendOrigin(rr.Mb, o)
  	}
  	return rr, nil, ""
  }
  
  func setMG(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(MG)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Mg = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Mg = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad MG Mg", l}, ""
  	}
  	if rr.Mg[l.length-1] != '.' {
  		rr.Mg = appendOrigin(rr.Mg, o)
  	}
  	return rr, nil, ""
  }
  
  func setHINFO(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(HINFO)
  	rr.Hdr = h
  
  	chunks, e, c1 := endingToTxtSlice(c, "bad HINFO Fields", f)
  	if e != nil {
  		return nil, e, c1
  	}
  
  	if ln := len(chunks); ln == 0 {
  		return rr, nil, ""
  	} else if ln == 1 {
  		// Can we split it?
  		if out := strings.Fields(chunks[0]); len(out) > 1 {
  			chunks = out
  		} else {
  			chunks = append(chunks, "")
  		}
  	}
  
  	rr.Cpu = chunks[0]
  	rr.Os = strings.Join(chunks[1:], " ")
  
  	return rr, nil, ""
  }
  
  func setMINFO(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(MINFO)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Rmail = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Rmail = o
  	} else {
  		_, ok := IsDomainName(l.token)
  		if !ok || l.length == 0 || l.err {
  			return nil, &ParseError{f, "bad MINFO Rmail", l}, ""
  		}
  		if rr.Rmail[l.length-1] != '.' {
  			rr.Rmail = appendOrigin(rr.Rmail, o)
  		}
  	}
  	<-c // zBlank
  	l = <-c
  	rr.Email = l.token
  	if l.token == "@" {
  		rr.Email = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad MINFO Email", l}, ""
  	}
  	if rr.Email[l.length-1] != '.' {
  		rr.Email = appendOrigin(rr.Email, o)
  	}
  	return rr, nil, ""
  }
  
  func setMF(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(MF)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Mf = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Mf = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad MF Mf", l}, ""
  	}
  	if rr.Mf[l.length-1] != '.' {
  		rr.Mf = appendOrigin(rr.Mf, o)
  	}
  	return rr, nil, ""
  }
  
  func setMD(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(MD)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Md = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Md = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad MD Md", l}, ""
  	}
  	if rr.Md[l.length-1] != '.' {
  		rr.Md = appendOrigin(rr.Md, o)
  	}
  	return rr, nil, ""
  }
  
  func setMX(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(MX)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad MX Pref", l}, ""
  	}
  	rr.Preference = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	rr.Mx = l.token
  	if l.token == "@" {
  		rr.Mx = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad MX Mx", l}, ""
  	}
  	if rr.Mx[l.length-1] != '.' {
  		rr.Mx = appendOrigin(rr.Mx, o)
  	}
  	return rr, nil, ""
  }
  
  func setRT(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(RT)
  	rr.Hdr = h
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil {
  		return nil, &ParseError{f, "bad RT Preference", l}, ""
  	}
  	rr.Preference = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	rr.Host = l.token
  	if l.token == "@" {
  		rr.Host = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad RT Host", l}, ""
  	}
  	if rr.Host[l.length-1] != '.' {
  		rr.Host = appendOrigin(rr.Host, o)
  	}
  	return rr, nil, ""
  }
  
  func setAFSDB(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(AFSDB)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad AFSDB Subtype", l}, ""
  	}
  	rr.Subtype = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	rr.Hostname = l.token
  	if l.token == "@" {
  		rr.Hostname = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad AFSDB Hostname", l}, ""
  	}
  	if rr.Hostname[l.length-1] != '.' {
  		rr.Hostname = appendOrigin(rr.Hostname, o)
  	}
  	return rr, nil, ""
  }
  
  func setX25(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(X25)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.err {
  		return nil, &ParseError{f, "bad X25 PSDNAddress", l}, ""
  	}
  	rr.PSDNAddress = l.token
  	return rr, nil, ""
  }
  
  func setKX(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(KX)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad KX Pref", l}, ""
  	}
  	rr.Preference = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	rr.Exchanger = l.token
  	if l.token == "@" {
  		rr.Exchanger = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad KX Exchanger", l}, ""
  	}
  	if rr.Exchanger[l.length-1] != '.' {
  		rr.Exchanger = appendOrigin(rr.Exchanger, o)
  	}
  	return rr, nil, ""
  }
  
  func setCNAME(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(CNAME)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Target = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Target = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad CNAME Target", l}, ""
  	}
  	if rr.Target[l.length-1] != '.' {
  		rr.Target = appendOrigin(rr.Target, o)
  	}
  	return rr, nil, ""
  }
  
  func setDNAME(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(DNAME)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Target = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Target = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad CNAME Target", l}, ""
  	}
  	if rr.Target[l.length-1] != '.' {
  		rr.Target = appendOrigin(rr.Target, o)
  	}
  	return rr, nil, ""
  }
  
  func setSOA(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(SOA)
  	rr.Hdr = h
  
  	l := <-c
  	rr.Ns = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	<-c // zBlank
  	if l.token == "@" {
  		rr.Ns = o
  	} else {
  		_, ok := IsDomainName(l.token)
  		if !ok || l.length == 0 || l.err {
  			return nil, &ParseError{f, "bad SOA Ns", l}, ""
  		}
  		if rr.Ns[l.length-1] != '.' {
  			rr.Ns = appendOrigin(rr.Ns, o)
  		}
  	}
  
  	l = <-c
  	rr.Mbox = l.token
  	if l.token == "@" {
  		rr.Mbox = o
  	} else {
  		_, ok := IsDomainName(l.token)
  		if !ok || l.length == 0 || l.err {
  			return nil, &ParseError{f, "bad SOA Mbox", l}, ""
  		}
  		if rr.Mbox[l.length-1] != '.' {
  			rr.Mbox = appendOrigin(rr.Mbox, o)
  		}
  	}
  	<-c // zBlank
  
  	var (
  		v  uint32
  		ok bool
  	)
  	for i := 0; i < 5; i++ {
  		l = <-c
  		if l.err {
  			return nil, &ParseError{f, "bad SOA zone parameter", l}, ""
  		}
  		if j, e := strconv.Atoi(l.token); e != nil {
  			if i == 0 {
  				// Serial should be a number
  				return nil, &ParseError{f, "bad SOA zone parameter", l}, ""
  			}
  			if v, ok = stringToTtl(l.token); !ok {
  				return nil, &ParseError{f, "bad SOA zone parameter", l}, ""
  
  			}
  		} else {
  			v = uint32(j)
  		}
  		switch i {
  		case 0:
  			rr.Serial = v
  			<-c // zBlank
  		case 1:
  			rr.Refresh = v
  			<-c // zBlank
  		case 2:
  			rr.Retry = v
  			<-c // zBlank
  		case 3:
  			rr.Expire = v
  			<-c // zBlank
  		case 4:
  			rr.Minttl = v
  		}
  	}
  	return rr, nil, ""
  }
  
  func setSRV(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(SRV)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad SRV Priority", l}, ""
  	}
  	rr.Priority = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad SRV Weight", l}, ""
  	}
  	rr.Weight = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad SRV Port", l}, ""
  	}
  	rr.Port = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	rr.Target = l.token
  	if l.token == "@" {
  		rr.Target = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad SRV Target", l}, ""
  	}
  	if rr.Target[l.length-1] != '.' {
  		rr.Target = appendOrigin(rr.Target, o)
  	}
  	return rr, nil, ""
  }
  
  func setNAPTR(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(NAPTR)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad NAPTR Order", l}, ""
  	}
  	rr.Order = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad NAPTR Preference", l}, ""
  	}
  	rr.Preference = uint16(i)
  	// Flags
  	<-c     // zBlank
  	l = <-c // _QUOTE
  	if l.value != zQuote {
  		return nil, &ParseError{f, "bad NAPTR Flags", l}, ""
  	}
  	l = <-c // Either String or Quote
  	if l.value == zString {
  		rr.Flags = l.token
  		l = <-c // _QUOTE
  		if l.value != zQuote {
  			return nil, &ParseError{f, "bad NAPTR Flags", l}, ""
  		}
  	} else if l.value == zQuote {
  		rr.Flags = ""
  	} else {
  		return nil, &ParseError{f, "bad NAPTR Flags", l}, ""
  	}
  
  	// Service
  	<-c     // zBlank
  	l = <-c // _QUOTE
  	if l.value != zQuote {
  		return nil, &ParseError{f, "bad NAPTR Service", l}, ""
  	}
  	l = <-c // Either String or Quote
  	if l.value == zString {
  		rr.Service = l.token
  		l = <-c // _QUOTE
  		if l.value != zQuote {
  			return nil, &ParseError{f, "bad NAPTR Service", l}, ""
  		}
  	} else if l.value == zQuote {
  		rr.Service = ""
  	} else {
  		return nil, &ParseError{f, "bad NAPTR Service", l}, ""
  	}
  
  	// Regexp
  	<-c     // zBlank
  	l = <-c // _QUOTE
  	if l.value != zQuote {
  		return nil, &ParseError{f, "bad NAPTR Regexp", l}, ""
  	}
  	l = <-c // Either String or Quote
  	if l.value == zString {
  		rr.Regexp = l.token
  		l = <-c // _QUOTE
  		if l.value != zQuote {
  			return nil, &ParseError{f, "bad NAPTR Regexp", l}, ""
  		}
  	} else if l.value == zQuote {
  		rr.Regexp = ""
  	} else {
  		return nil, &ParseError{f, "bad NAPTR Regexp", l}, ""
  	}
  	// After quote no space??
  	<-c     // zBlank
  	l = <-c // zString
  	rr.Replacement = l.token
  	if l.token == "@" {
  		rr.Replacement = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad NAPTR Replacement", l}, ""
  	}
  	if rr.Replacement[l.length-1] != '.' {
  		rr.Replacement = appendOrigin(rr.Replacement, o)
  	}
  	return rr, nil, ""
  }
  
  func setTALINK(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(TALINK)
  	rr.Hdr = h
  
  	l := <-c
  	rr.PreviousName = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.PreviousName = o
  	} else {
  		_, ok := IsDomainName(l.token)
  		if !ok || l.length == 0 || l.err {
  			return nil, &ParseError{f, "bad TALINK PreviousName", l}, ""
  		}
  		if rr.PreviousName[l.length-1] != '.' {
  			rr.PreviousName = appendOrigin(rr.PreviousName, o)
  		}
  	}
  	<-c // zBlank
  	l = <-c
  	rr.NextName = l.token
  	if l.token == "@" {
  		rr.NextName = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad TALINK NextName", l}, ""
  	}
  	if rr.NextName[l.length-1] != '.' {
  		rr.NextName = appendOrigin(rr.NextName, o)
  	}
  	return rr, nil, ""
  }
  
  func setLOC(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(LOC)
  	rr.Hdr = h
  	// Non zero defaults for LOC record, see RFC 1876, Section 3.
  	rr.HorizPre = 165 // 10000
  	rr.VertPre = 162  // 10
  	rr.Size = 18      // 1
  	ok := false
  	// North
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad LOC Latitude", l}, ""
  	}
  	rr.Latitude = 1000 * 60 * 60 * uint32(i)
  
  	<-c // zBlank
  	// Either number, 'N' or 'S'
  	l = <-c
  	if rr.Latitude, ok = locCheckNorth(l.token, rr.Latitude); ok {
  		goto East
  	}
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad LOC Latitude minutes", l}, ""
  	}
  	rr.Latitude += 1000 * 60 * uint32(i)
  
  	<-c // zBlank
  	l = <-c
  	if i, e := strconv.ParseFloat(l.token, 32); e != nil || l.err {
  		return nil, &ParseError{f, "bad LOC Latitude seconds", l}, ""
  	} else {
  		rr.Latitude += uint32(1000 * i)
  	}
  	<-c // zBlank
  	// Either number, 'N' or 'S'
  	l = <-c
  	if rr.Latitude, ok = locCheckNorth(l.token, rr.Latitude); ok {
  		goto East
  	}
  	// If still alive, flag an error
  	return nil, &ParseError{f, "bad LOC Latitude North/South", l}, ""
  
  East:
  	// East
  	<-c // zBlank
  	l = <-c
  	if i, e := strconv.Atoi(l.token); e != nil || l.err {
  		return nil, &ParseError{f, "bad LOC Longitude", l}, ""
  	} else {
  		rr.Longitude = 1000 * 60 * 60 * uint32(i)
  	}
  	<-c // zBlank
  	// Either number, 'E' or 'W'
  	l = <-c
  	if rr.Longitude, ok = locCheckEast(l.token, rr.Longitude); ok {
  		goto Altitude
  	}
  	if i, e := strconv.Atoi(l.token); e != nil || l.err {
  		return nil, &ParseError{f, "bad LOC Longitude minutes", l}, ""
  	} else {
  		rr.Longitude += 1000 * 60 * uint32(i)
  	}
  	<-c // zBlank
  	l = <-c
  	if i, e := strconv.ParseFloat(l.token, 32); e != nil || l.err {
  		return nil, &ParseError{f, "bad LOC Longitude seconds", l}, ""
  	} else {
  		rr.Longitude += uint32(1000 * i)
  	}
  	<-c // zBlank
  	// Either number, 'E' or 'W'
  	l = <-c
  	if rr.Longitude, ok = locCheckEast(l.token, rr.Longitude); ok {
  		goto Altitude
  	}
  	// If still alive, flag an error
  	return nil, &ParseError{f, "bad LOC Longitude East/West", l}, ""
  
  Altitude:
  	<-c // zBlank
  	l = <-c
  	if l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad LOC Altitude", l}, ""
  	}
  	if l.token[len(l.token)-1] == 'M' || l.token[len(l.token)-1] == 'm' {
  		l.token = l.token[0 : len(l.token)-1]
  	}
  	if i, e := strconv.ParseFloat(l.token, 32); e != nil {
  		return nil, &ParseError{f, "bad LOC Altitude", l}, ""
  	} else {
  		rr.Altitude = uint32(i*100.0 + 10000000.0 + 0.5)
  	}
  
  	// And now optionally the other values
  	l = <-c
  	count := 0
  	for l.value != zNewline && l.value != zEOF {
  		switch l.value {
  		case zString:
  			switch count {
  			case 0: // Size
  				e, m, ok := stringToCm(l.token)
  				if !ok {
  					return nil, &ParseError{f, "bad LOC Size", l}, ""
  				}
  				rr.Size = (e & 0x0f) | (m << 4 & 0xf0)
  			case 1: // HorizPre
  				e, m, ok := stringToCm(l.token)
  				if !ok {
  					return nil, &ParseError{f, "bad LOC HorizPre", l}, ""
  				}
  				rr.HorizPre = (e & 0x0f) | (m << 4 & 0xf0)
  			case 2: // VertPre
  				e, m, ok := stringToCm(l.token)
  				if !ok {
  					return nil, &ParseError{f, "bad LOC VertPre", l}, ""
  				}
  				rr.VertPre = (e & 0x0f) | (m << 4 & 0xf0)
  			}
  			count++
  		case zBlank:
  			// Ok
  		default:
  			return nil, &ParseError{f, "bad LOC Size, HorizPre or VertPre", l}, ""
  		}
  		l = <-c
  	}
  	return rr, nil, ""
  }
  
  func setHIP(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(HIP)
  	rr.Hdr = h
  
  	// HitLength is not represented
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, l.comment
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad HIP PublicKeyAlgorithm", l}, ""
  	}
  	rr.PublicKeyAlgorithm = uint8(i)
  	<-c     // zBlank
  	l = <-c // zString
  	if l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad HIP Hit", l}, ""
  	}
  	rr.Hit = l.token // This can not contain spaces, see RFC 5205 Section 6.
  	rr.HitLength = uint8(len(rr.Hit)) / 2
  
  	<-c     // zBlank
  	l = <-c // zString
  	if l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad HIP PublicKey", l}, ""
  	}
  	rr.PublicKey = l.token // This cannot contain spaces
  	rr.PublicKeyLength = uint16(base64.StdEncoding.DecodedLen(len(rr.PublicKey)))
  
  	// RendezvousServers (if any)
  	l = <-c
  	var xs []string
  	for l.value != zNewline && l.value != zEOF {
  		switch l.value {
  		case zString:
  			if l.token == "@" {
  				xs = append(xs, o)
  				l = <-c
  				continue
  			}
  			_, ok := IsDomainName(l.token)
  			if !ok || l.length == 0 || l.err {
  				return nil, &ParseError{f, "bad HIP RendezvousServers", l}, ""
  			}
  			if l.token[l.length-1] != '.' {
  				l.token = appendOrigin(l.token, o)
  			}
  			xs = append(xs, l.token)
  		case zBlank:
  			// Ok
  		default:
  			return nil, &ParseError{f, "bad HIP RendezvousServers", l}, ""
  		}
  		l = <-c
  	}
  	rr.RendezvousServers = xs
  	return rr, nil, l.comment
  }
  
  func setCERT(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(CERT)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, l.comment
  	}
  	if v, ok := StringToCertType[l.token]; ok {
  		rr.Type = v
  	} else if i, e := strconv.Atoi(l.token); e != nil {
  		return nil, &ParseError{f, "bad CERT Type", l}, ""
  	} else {
  		rr.Type = uint16(i)
  	}
  	<-c     // zBlank
  	l = <-c // zString
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad CERT KeyTag", l}, ""
  	}
  	rr.KeyTag = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	if v, ok := StringToAlgorithm[l.token]; ok {
  		rr.Algorithm = v
  	} else if i, e := strconv.Atoi(l.token); e != nil {
  		return nil, &ParseError{f, "bad CERT Algorithm", l}, ""
  	} else {
  		rr.Algorithm = uint8(i)
  	}
  	s, e1, c1 := endingToString(c, "bad CERT Certificate", f)
  	if e1 != nil {
  		return nil, e1, c1
  	}
  	rr.Certificate = s
  	return rr, nil, c1
  }
  
  func setOPENPGPKEY(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(OPENPGPKEY)
  	rr.Hdr = h
  
  	s, e, c1 := endingToString(c, "bad OPENPGPKEY PublicKey", f)
  	if e != nil {
  		return nil, e, c1
  	}
  	rr.PublicKey = s
  	return rr, nil, c1
  }
  
  func setSIG(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	r, e, s := setRRSIG(h, c, o, f)
  	if r != nil {
  		return &SIG{*r.(*RRSIG)}, e, s
  	}
  	return nil, e, s
  }
  
  func setRRSIG(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(RRSIG)
  	rr.Hdr = h
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, l.comment
  	}
  	if t, ok := StringToType[l.tokenUpper]; !ok {
  		if strings.HasPrefix(l.tokenUpper, "TYPE") {
  			t, ok = typeToInt(l.tokenUpper)
  			if !ok {
  				return nil, &ParseError{f, "bad RRSIG Typecovered", l}, ""
  			}
  			rr.TypeCovered = t
  		} else {
  			return nil, &ParseError{f, "bad RRSIG Typecovered", l}, ""
  		}
  	} else {
  		rr.TypeCovered = t
  	}
  	<-c // zBlank
  	l = <-c
  	i, err := strconv.Atoi(l.token)
  	if err != nil || l.err {
  		return nil, &ParseError{f, "bad RRSIG Algorithm", l}, ""
  	}
  	rr.Algorithm = uint8(i)
  	<-c // zBlank
  	l = <-c
  	i, err = strconv.Atoi(l.token)
  	if err != nil || l.err {
  		return nil, &ParseError{f, "bad RRSIG Labels", l}, ""
  	}
  	rr.Labels = uint8(i)
  	<-c // zBlank
  	l = <-c
  	i, err = strconv.Atoi(l.token)
  	if err != nil || l.err {
  		return nil, &ParseError{f, "bad RRSIG OrigTtl", l}, ""
  	}
  	rr.OrigTtl = uint32(i)
  	<-c // zBlank
  	l = <-c
  	if i, err := StringToTime(l.token); err != nil {
  		// Try to see if all numeric and use it as epoch
  		if i, err := strconv.ParseInt(l.token, 10, 64); err == nil {
  			// TODO(miek): error out on > MAX_UINT32, same below
  			rr.Expiration = uint32(i)
  		} else {
  			return nil, &ParseError{f, "bad RRSIG Expiration", l}, ""
  		}
  	} else {
  		rr.Expiration = i
  	}
  	<-c // zBlank
  	l = <-c
  	if i, err := StringToTime(l.token); err != nil {
  		if i, err := strconv.ParseInt(l.token, 10, 64); err == nil {
  			rr.Inception = uint32(i)
  		} else {
  			return nil, &ParseError{f, "bad RRSIG Inception", l}, ""
  		}
  	} else {
  		rr.Inception = i
  	}
  	<-c // zBlank
  	l = <-c
  	i, err = strconv.Atoi(l.token)
  	if err != nil || l.err {
  		return nil, &ParseError{f, "bad RRSIG KeyTag", l}, ""
  	}
  	rr.KeyTag = uint16(i)
  	<-c // zBlank
  	l = <-c
  	rr.SignerName = l.token
  	if l.token == "@" {
  		rr.SignerName = o
  	} else {
  		_, ok := IsDomainName(l.token)
  		if !ok || l.length == 0 || l.err {
  			return nil, &ParseError{f, "bad RRSIG SignerName", l}, ""
  		}
  		if rr.SignerName[l.length-1] != '.' {
  			rr.SignerName = appendOrigin(rr.SignerName, o)
  		}
  	}
  	s, e, c1 := endingToString(c, "bad RRSIG Signature", f)
  	if e != nil {
  		return nil, e, c1
  	}
  	rr.Signature = s
  	return rr, nil, c1
  }
  
  func setNSEC(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(NSEC)
  	rr.Hdr = h
  
  	l := <-c
  	rr.NextDomain = l.token
  	if l.length == 0 {
  		return rr, nil, l.comment
  	}
  	if l.token == "@" {
  		rr.NextDomain = o
  	} else {
  		_, ok := IsDomainName(l.token)
  		if !ok || l.length == 0 || l.err {
  			return nil, &ParseError{f, "bad NSEC NextDomain", l}, ""
  		}
  		if rr.NextDomain[l.length-1] != '.' {
  			rr.NextDomain = appendOrigin(rr.NextDomain, o)
  		}
  	}
  
  	rr.TypeBitMap = make([]uint16, 0)
  	var (
  		k  uint16
  		ok bool
  	)
  	l = <-c
  	for l.value != zNewline && l.value != zEOF {
  		switch l.value {
  		case zBlank:
  			// Ok
  		case zString:
  			if k, ok = StringToType[l.tokenUpper]; !ok {
  				if k, ok = typeToInt(l.tokenUpper); !ok {
  					return nil, &ParseError{f, "bad NSEC TypeBitMap", l}, ""
  				}
  			}
  			rr.TypeBitMap = append(rr.TypeBitMap, k)
  		default:
  			return nil, &ParseError{f, "bad NSEC TypeBitMap", l}, ""
  		}
  		l = <-c
  	}
  	return rr, nil, l.comment
  }
  
  func setNSEC3(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(NSEC3)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, l.comment
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad NSEC3 Hash", l}, ""
  	}
  	rr.Hash = uint8(i)
  	<-c // zBlank
  	l = <-c
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad NSEC3 Flags", l}, ""
  	}
  	rr.Flags = uint8(i)
  	<-c // zBlank
  	l = <-c
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad NSEC3 Iterations", l}, ""
  	}
  	rr.Iterations = uint16(i)
  	<-c
  	l = <-c
  	if len(l.token) == 0 || l.err {
  		return nil, &ParseError{f, "bad NSEC3 Salt", l}, ""
  	}
  	rr.SaltLength = uint8(len(l.token)) / 2
  	rr.Salt = l.token
  
  	<-c
  	l = <-c
  	if len(l.token) == 0 || l.err {
  		return nil, &ParseError{f, "bad NSEC3 NextDomain", l}, ""
  	}
  	rr.HashLength = 20 // Fix for NSEC3 (sha1 160 bits)
  	rr.NextDomain = l.token
  
  	rr.TypeBitMap = make([]uint16, 0)
  	var (
  		k  uint16
  		ok bool
  	)
  	l = <-c
  	for l.value != zNewline && l.value != zEOF {
  		switch l.value {
  		case zBlank:
  			// Ok
  		case zString:
  			if k, ok = StringToType[l.tokenUpper]; !ok {
  				if k, ok = typeToInt(l.tokenUpper); !ok {
  					return nil, &ParseError{f, "bad NSEC3 TypeBitMap", l}, ""
  				}
  			}
  			rr.TypeBitMap = append(rr.TypeBitMap, k)
  		default:
  			return nil, &ParseError{f, "bad NSEC3 TypeBitMap", l}, ""
  		}
  		l = <-c
  	}
  	return rr, nil, l.comment
  }
  
  func setNSEC3PARAM(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(NSEC3PARAM)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad NSEC3PARAM Hash", l}, ""
  	}
  	rr.Hash = uint8(i)
  	<-c // zBlank
  	l = <-c
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad NSEC3PARAM Flags", l}, ""
  	}
  	rr.Flags = uint8(i)
  	<-c // zBlank
  	l = <-c
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad NSEC3PARAM Iterations", l}, ""
  	}
  	rr.Iterations = uint16(i)
  	<-c
  	l = <-c
  	rr.SaltLength = uint8(len(l.token))
  	rr.Salt = l.token
  	return rr, nil, ""
  }
  
  func setEUI48(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(EUI48)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.length != 17 || l.err {
  		return nil, &ParseError{f, "bad EUI48 Address", l}, ""
  	}
  	addr := make([]byte, 12)
  	dash := 0
  	for i := 0; i < 10; i += 2 {
  		addr[i] = l.token[i+dash]
  		addr[i+1] = l.token[i+1+dash]
  		dash++
  		if l.token[i+1+dash] != '-' {
  			return nil, &ParseError{f, "bad EUI48 Address", l}, ""
  		}
  	}
  	addr[10] = l.token[15]
  	addr[11] = l.token[16]
  
  	i, e := strconv.ParseUint(string(addr), 16, 48)
  	if e != nil {
  		return nil, &ParseError{f, "bad EUI48 Address", l}, ""
  	}
  	rr.Address = i
  	return rr, nil, ""
  }
  
  func setEUI64(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(EUI64)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.length != 23 || l.err {
  		return nil, &ParseError{f, "bad EUI64 Address", l}, ""
  	}
  	addr := make([]byte, 16)
  	dash := 0
  	for i := 0; i < 14; i += 2 {
  		addr[i] = l.token[i+dash]
  		addr[i+1] = l.token[i+1+dash]
  		dash++
  		if l.token[i+1+dash] != '-' {
  			return nil, &ParseError{f, "bad EUI64 Address", l}, ""
  		}
  	}
  	addr[14] = l.token[21]
  	addr[15] = l.token[22]
  
  	i, e := strconv.ParseUint(string(addr), 16, 64)
  	if e != nil {
  		return nil, &ParseError{f, "bad EUI68 Address", l}, ""
  	}
  	rr.Address = uint64(i)
  	return rr, nil, ""
  }
  
  func setSSHFP(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(SSHFP)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad SSHFP Algorithm", l}, ""
  	}
  	rr.Algorithm = uint8(i)
  	<-c // zBlank
  	l = <-c
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad SSHFP Type", l}, ""
  	}
  	rr.Type = uint8(i)
  	<-c // zBlank
  	s, e1, c1 := endingToString(c, "bad SSHFP Fingerprint", f)
  	if e1 != nil {
  		return nil, e1, c1
  	}
  	rr.FingerPrint = s
  	return rr, nil, ""
  }
  
  func setDNSKEYs(h RR_Header, c chan lex, o, f, typ string) (RR, *ParseError, string) {
  	rr := new(DNSKEY)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, l.comment
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad " + typ + " Flags", l}, ""
  	}
  	rr.Flags = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad " + typ + " Protocol", l}, ""
  	}
  	rr.Protocol = uint8(i)
  	<-c     // zBlank
  	l = <-c // zString
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad " + typ + " Algorithm", l}, ""
  	}
  	rr.Algorithm = uint8(i)
  	s, e1, c1 := endingToString(c, "bad "+typ+" PublicKey", f)
  	if e1 != nil {
  		return nil, e1, c1
  	}
  	rr.PublicKey = s
  	return rr, nil, c1
  }
  
  func setKEY(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	r, e, s := setDNSKEYs(h, c, o, f, "KEY")
  	if r != nil {
  		return &KEY{*r.(*DNSKEY)}, e, s
  	}
  	return nil, e, s
  }
  
  func setDNSKEY(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	r, e, s := setDNSKEYs(h, c, o, f, "DNSKEY")
  	return r, e, s
  }
  
  func setCDNSKEY(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	r, e, s := setDNSKEYs(h, c, o, f, "CDNSKEY")
  	if r != nil {
  		return &CDNSKEY{*r.(*DNSKEY)}, e, s
  	}
  	return nil, e, s
  }
  
  func setRKEY(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(RKEY)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, l.comment
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad RKEY Flags", l}, ""
  	}
  	rr.Flags = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad RKEY Protocol", l}, ""
  	}
  	rr.Protocol = uint8(i)
  	<-c     // zBlank
  	l = <-c // zString
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad RKEY Algorithm", l}, ""
  	}
  	rr.Algorithm = uint8(i)
  	s, e1, c1 := endingToString(c, "bad RKEY PublicKey", f)
  	if e1 != nil {
  		return nil, e1, c1
  	}
  	rr.PublicKey = s
  	return rr, nil, c1
  }
  
  func setEID(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(EID)
  	rr.Hdr = h
  	s, e, c1 := endingToString(c, "bad EID Endpoint", f)
  	if e != nil {
  		return nil, e, c1
  	}
  	rr.Endpoint = s
  	return rr, nil, c1
  }
  
  func setNIMLOC(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(NIMLOC)
  	rr.Hdr = h
  	s, e, c1 := endingToString(c, "bad NIMLOC Locator", f)
  	if e != nil {
  		return nil, e, c1
  	}
  	rr.Locator = s
  	return rr, nil, c1
  }
  
  func setGPOS(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(GPOS)
  	rr.Hdr = h
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	_, e := strconv.ParseFloat(l.token, 64)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad GPOS Longitude", l}, ""
  	}
  	rr.Longitude = l.token
  	<-c // zBlank
  	l = <-c
  	_, e = strconv.ParseFloat(l.token, 64)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad GPOS Latitude", l}, ""
  	}
  	rr.Latitude = l.token
  	<-c // zBlank
  	l = <-c
  	_, e = strconv.ParseFloat(l.token, 64)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad GPOS Altitude", l}, ""
  	}
  	rr.Altitude = l.token
  	return rr, nil, ""
  }
  
  func setDSs(h RR_Header, c chan lex, o, f, typ string) (RR, *ParseError, string) {
  	rr := new(DS)
  	rr.Hdr = h
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, l.comment
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad " + typ + " KeyTag", l}, ""
  	}
  	rr.KeyTag = uint16(i)
  	<-c // zBlank
  	l = <-c
  	if i, e := strconv.Atoi(l.token); e != nil {
  		i, ok := StringToAlgorithm[l.tokenUpper]
  		if !ok || l.err {
  			return nil, &ParseError{f, "bad " + typ + " Algorithm", l}, ""
  		}
  		rr.Algorithm = i
  	} else {
  		rr.Algorithm = uint8(i)
  	}
  	<-c // zBlank
  	l = <-c
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad " + typ + " DigestType", l}, ""
  	}
  	rr.DigestType = uint8(i)
  	s, e1, c1 := endingToString(c, "bad "+typ+" Digest", f)
  	if e1 != nil {
  		return nil, e1, c1
  	}
  	rr.Digest = s
  	return rr, nil, c1
  }
  
  func setDS(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	r, e, s := setDSs(h, c, o, f, "DS")
  	return r, e, s
  }
  
  func setDLV(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	r, e, s := setDSs(h, c, o, f, "DLV")
  	if r != nil {
  		return &DLV{*r.(*DS)}, e, s
  	}
  	return nil, e, s
  }
  
  func setCDS(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	r, e, s := setDSs(h, c, o, f, "CDS")
  	if r != nil {
  		return &CDS{*r.(*DS)}, e, s
  	}
  	return nil, e, s
  }
  
  func setTA(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(TA)
  	rr.Hdr = h
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, l.comment
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad TA KeyTag", l}, ""
  	}
  	rr.KeyTag = uint16(i)
  	<-c // zBlank
  	l = <-c
  	if i, e := strconv.Atoi(l.token); e != nil {
  		i, ok := StringToAlgorithm[l.tokenUpper]
  		if !ok || l.err {
  			return nil, &ParseError{f, "bad TA Algorithm", l}, ""
  		}
  		rr.Algorithm = i
  	} else {
  		rr.Algorithm = uint8(i)
  	}
  	<-c // zBlank
  	l = <-c
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad TA DigestType", l}, ""
  	}
  	rr.DigestType = uint8(i)
  	s, e, c1 := endingToString(c, "bad TA Digest", f)
  	if e != nil {
  		return nil, e.(*ParseError), c1
  	}
  	rr.Digest = s
  	return rr, nil, c1
  }
  
  func setTLSA(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(TLSA)
  	rr.Hdr = h
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, l.comment
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad TLSA Usage", l}, ""
  	}
  	rr.Usage = uint8(i)
  	<-c // zBlank
  	l = <-c
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad TLSA Selector", l}, ""
  	}
  	rr.Selector = uint8(i)
  	<-c // zBlank
  	l = <-c
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad TLSA MatchingType", l}, ""
  	}
  	rr.MatchingType = uint8(i)
  	// So this needs be e2 (i.e. different than e), because...??t
  	s, e2, c1 := endingToString(c, "bad TLSA Certificate", f)
  	if e2 != nil {
  		return nil, e2, c1
  	}
  	rr.Certificate = s
  	return rr, nil, c1
  }
  
  func setRFC3597(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(RFC3597)
  	rr.Hdr = h
  	l := <-c
  	if l.token != "\\#" {
  		return nil, &ParseError{f, "bad RFC3597 Rdata", l}, ""
  	}
  	<-c // zBlank
  	l = <-c
  	rdlength, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad RFC3597 Rdata ", l}, ""
  	}
  
  	s, e1, c1 := endingToString(c, "bad RFC3597 Rdata", f)
  	if e1 != nil {
  		return nil, e1, c1
  	}
  	if rdlength*2 != len(s) {
  		return nil, &ParseError{f, "bad RFC3597 Rdata", l}, ""
  	}
  	rr.Rdata = s
  	return rr, nil, c1
  }
  
  func setSPF(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(SPF)
  	rr.Hdr = h
  
  	s, e, c1 := endingToTxtSlice(c, "bad SPF Txt", f)
  	if e != nil {
  		return nil, e, ""
  	}
  	rr.Txt = s
  	return rr, nil, c1
  }
  
  func setTXT(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(TXT)
  	rr.Hdr = h
  
  	// no zBlank reading here, because all this rdata is TXT
  	s, e, c1 := endingToTxtSlice(c, "bad TXT Txt", f)
  	if e != nil {
  		return nil, e, ""
  	}
  	rr.Txt = s
  	return rr, nil, c1
  }
  
  // identical to setTXT
  func setNINFO(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(NINFO)
  	rr.Hdr = h
  
  	s, e, c1 := endingToTxtSlice(c, "bad NINFO ZSData", f)
  	if e != nil {
  		return nil, e, ""
  	}
  	rr.ZSData = s
  	return rr, nil, c1
  }
  
  func setURI(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(URI)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 { // Dynamic updates.
  		return rr, nil, ""
  	}
  
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad URI Priority", l}, ""
  	}
  	rr.Priority = uint16(i)
  	<-c // zBlank
  	l = <-c
  	i, e = strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad URI Weight", l}, ""
  	}
  	rr.Weight = uint16(i)
  
  	<-c // zBlank
  	s, err, c1 := endingToTxtSlice(c, "bad URI Target", f)
  	if err != nil {
  		return nil, err, ""
  	}
  	if len(s) > 1 {
  		return nil, &ParseError{f, "bad URI Target", l}, ""
  	}
  	rr.Target = s[0]
  	return rr, nil, c1
  }
  
  func setDHCID(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	// awesome record to parse!
  	rr := new(DHCID)
  	rr.Hdr = h
  
  	s, e, c1 := endingToString(c, "bad DHCID Digest", f)
  	if e != nil {
  		return nil, e, c1
  	}
  	rr.Digest = s
  	return rr, nil, c1
  }
  
  func setNID(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(NID)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad NID Preference", l}, ""
  	}
  	rr.Preference = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	u, err := stringToNodeID(l)
  	if err != nil || l.err {
  		return nil, err, ""
  	}
  	rr.NodeID = u
  	return rr, nil, ""
  }
  
  func setL32(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(L32)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad L32 Preference", l}, ""
  	}
  	rr.Preference = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	rr.Locator32 = net.ParseIP(l.token)
  	if rr.Locator32 == nil || l.err {
  		return nil, &ParseError{f, "bad L32 Locator", l}, ""
  	}
  	return rr, nil, ""
  }
  
  func setLP(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(LP)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad LP Preference", l}, ""
  	}
  	rr.Preference = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	rr.Fqdn = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Fqdn = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad LP Fqdn", l}, ""
  	}
  	if rr.Fqdn[l.length-1] != '.' {
  		rr.Fqdn = appendOrigin(rr.Fqdn, o)
  	}
  	return rr, nil, ""
  }
  
  func setL64(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(L64)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad L64 Preference", l}, ""
  	}
  	rr.Preference = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	u, err := stringToNodeID(l)
  	if err != nil || l.err {
  		return nil, err, ""
  	}
  	rr.Locator64 = u
  	return rr, nil, ""
  }
  
  func setUID(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(UID)
  	rr.Hdr = h
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad UID Uid", l}, ""
  	}
  	rr.Uid = uint32(i)
  	return rr, nil, ""
  }
  
  func setGID(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(GID)
  	rr.Hdr = h
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad GID Gid", l}, ""
  	}
  	rr.Gid = uint32(i)
  	return rr, nil, ""
  }
  
  func setUINFO(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(UINFO)
  	rr.Hdr = h
  	s, e, c1 := endingToTxtSlice(c, "bad UINFO Uinfo", f)
  	if e != nil {
  		return nil, e, ""
  	}
  	rr.Uinfo = s[0] // silently discard anything above
  	return rr, nil, c1
  }
  
  func setPX(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(PX)
  	rr.Hdr = h
  
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	i, e := strconv.Atoi(l.token)
  	if e != nil || l.err {
  		return nil, &ParseError{f, "bad PX Preference", l}, ""
  	}
  	rr.Preference = uint16(i)
  	<-c     // zBlank
  	l = <-c // zString
  	rr.Map822 = l.token
  	if l.length == 0 {
  		return rr, nil, ""
  	}
  	if l.token == "@" {
  		rr.Map822 = o
  		return rr, nil, ""
  	}
  	_, ok := IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad PX Map822", l}, ""
  	}
  	if rr.Map822[l.length-1] != '.' {
  		rr.Map822 = appendOrigin(rr.Map822, o)
  	}
  	<-c     // zBlank
  	l = <-c // zString
  	rr.Mapx400 = l.token
  	if l.token == "@" {
  		rr.Mapx400 = o
  		return rr, nil, ""
  	}
  	_, ok = IsDomainName(l.token)
  	if !ok || l.length == 0 || l.err {
  		return nil, &ParseError{f, "bad PX Mapx400", l}, ""
  	}
  	if rr.Mapx400[l.length-1] != '.' {
  		rr.Mapx400 = appendOrigin(rr.Mapx400, o)
  	}
  	return rr, nil, ""
  }
  
  func setIPSECKEY(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(IPSECKEY)
  	rr.Hdr = h
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, l.comment
  	}
  	i, err := strconv.Atoi(l.token)
  	if err != nil || l.err {
  		return nil, &ParseError{f, "bad IPSECKEY Precedence", l}, ""
  	}
  	rr.Precedence = uint8(i)
  	<-c // zBlank
  	l = <-c
  	i, err = strconv.Atoi(l.token)
  	if err != nil || l.err {
  		return nil, &ParseError{f, "bad IPSECKEY GatewayType", l}, ""
  	}
  	rr.GatewayType = uint8(i)
  	<-c // zBlank
  	l = <-c
  	i, err = strconv.Atoi(l.token)
  	if err != nil || l.err {
  		return nil, &ParseError{f, "bad IPSECKEY Algorithm", l}, ""
  	}
  	rr.Algorithm = uint8(i)
  
  	// Now according to GatewayType we can have different elements here
  	<-c // zBlank
  	l = <-c
  	switch rr.GatewayType {
  	case 0:
  		fallthrough
  	case 3:
  		rr.GatewayName = l.token
  		if l.token == "@" {
  			rr.GatewayName = o
  		}
  		_, ok := IsDomainName(l.token)
  		if !ok || l.length == 0 || l.err {
  			return nil, &ParseError{f, "bad IPSECKEY GatewayName", l}, ""
  		}
  		if rr.GatewayName[l.length-1] != '.' {
  			rr.GatewayName = appendOrigin(rr.GatewayName, o)
  		}
  	case 1:
  		rr.GatewayA = net.ParseIP(l.token)
  		if rr.GatewayA == nil {
  			return nil, &ParseError{f, "bad IPSECKEY GatewayA", l}, ""
  		}
  	case 2:
  		rr.GatewayAAAA = net.ParseIP(l.token)
  		if rr.GatewayAAAA == nil {
  			return nil, &ParseError{f, "bad IPSECKEY GatewayAAAA", l}, ""
  		}
  	default:
  		return nil, &ParseError{f, "bad IPSECKEY GatewayType", l}, ""
  	}
  
  	s, e, c1 := endingToString(c, "bad IPSECKEY PublicKey", f)
  	if e != nil {
  		return nil, e, c1
  	}
  	rr.PublicKey = s
  	return rr, nil, c1
  }
  
  func setCAA(h RR_Header, c chan lex, o, f string) (RR, *ParseError, string) {
  	rr := new(CAA)
  	rr.Hdr = h
  	l := <-c
  	if l.length == 0 {
  		return rr, nil, l.comment
  	}
  	i, err := strconv.Atoi(l.token)
  	if err != nil || l.err {
  		return nil, &ParseError{f, "bad CAA Flag", l}, ""
  	}
  	rr.Flag = uint8(i)
  
  	<-c     // zBlank
  	l = <-c // zString
  	if l.value != zString {
  		return nil, &ParseError{f, "bad CAA Tag", l}, ""
  	}
  	rr.Tag = l.token
  
  	<-c // zBlank
  	s, e, c1 := endingToTxtSlice(c, "bad CAA Value", f)
  	if e != nil {
  		return nil, e, ""
  	}
  	if len(s) > 1 {
  		return nil, &ParseError{f, "bad CAA Value", l}, ""
  	}
  	rr.Value = s[0]
  	return rr, nil, c1
  }
  
  var typeToparserFunc = map[uint16]parserFunc{
  	TypeAAAA:       {setAAAA, false},
  	TypeAFSDB:      {setAFSDB, false},
  	TypeA:          {setA, false},
  	TypeCAA:        {setCAA, true},
  	TypeCDS:        {setCDS, true},
  	TypeCDNSKEY:    {setCDNSKEY, true},
  	TypeCERT:       {setCERT, true},
  	TypeCNAME:      {setCNAME, false},
  	TypeDHCID:      {setDHCID, true},
  	TypeDLV:        {setDLV, true},
  	TypeDNAME:      {setDNAME, false},
  	TypeKEY:        {setKEY, true},
  	TypeDNSKEY:     {setDNSKEY, true},
  	TypeDS:         {setDS, true},
  	TypeEID:        {setEID, true},
  	TypeEUI48:      {setEUI48, false},
  	TypeEUI64:      {setEUI64, false},
  	TypeGID:        {setGID, false},
  	TypeGPOS:       {setGPOS, false},
  	TypeHINFO:      {setHINFO, true},
  	TypeHIP:        {setHIP, true},
  	TypeIPSECKEY:   {setIPSECKEY, true},
  	TypeKX:         {setKX, false},
  	TypeL32:        {setL32, false},
  	TypeL64:        {setL64, false},
  	TypeLOC:        {setLOC, true},
  	TypeLP:         {setLP, false},
  	TypeMB:         {setMB, false},
  	TypeMD:         {setMD, false},
  	TypeMF:         {setMF, false},
  	TypeMG:         {setMG, false},
  	TypeMINFO:      {setMINFO, false},
  	TypeMR:         {setMR, false},
  	TypeMX:         {setMX, false},
  	TypeNAPTR:      {setNAPTR, false},
  	TypeNID:        {setNID, false},
  	TypeNIMLOC:     {setNIMLOC, true},
  	TypeNINFO:      {setNINFO, true},
  	TypeNSAPPTR:    {setNSAPPTR, false},
  	TypeNSEC3PARAM: {setNSEC3PARAM, false},
  	TypeNSEC3:      {setNSEC3, true},
  	TypeNSEC:       {setNSEC, true},
  	TypeNS:         {setNS, false},
  	TypeOPENPGPKEY: {setOPENPGPKEY, true},
  	TypePTR:        {setPTR, false},
  	TypePX:         {setPX, false},
  	TypeSIG:        {setSIG, true},
  	TypeRKEY:       {setRKEY, true},
  	TypeRP:         {setRP, false},
  	TypeRRSIG:      {setRRSIG, true},
  	TypeRT:         {setRT, false},
  	TypeSOA:        {setSOA, false},
  	TypeSPF:        {setSPF, true},
  	TypeSRV:        {setSRV, false},
  	TypeSSHFP:      {setSSHFP, true},
  	TypeTALINK:     {setTALINK, false},
  	TypeTA:         {setTA, true},
  	TypeTLSA:       {setTLSA, true},
  	TypeTXT:        {setTXT, true},
  	TypeUID:        {setUID, false},
  	TypeUINFO:      {setUINFO, true},
  	TypeURI:        {setURI, true},
  	TypeX25:        {setX25, false},
  }
  