501 lines
14 KiB
Go
501 lines
14 KiB
Go
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package dns
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import (
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"net"
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)
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// All data from c is either _STRING or _BLANK
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// After the rdata there may come 1 _BLANK and then a _NEWLINE
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// or immediately a _NEWLINE. If this is not the case we flag
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// an error: garbage after rdata.
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func slurpRemainder(c chan Lex) error {
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l := <-c
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switch l.value {
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case _BLANK:
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l = <-c
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if l.value != _NEWLINE {
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return &ParseError{err: "garbage after rdata", lex: l}
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}
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// Ok
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case _NEWLINE:
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// Ok
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default:
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return &ParseError{err: "garbage after rdata", lex: l}
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}
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return nil
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}
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func setRR(h RR_Header, c chan Lex) (RR, error) {
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var (
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r RR
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e error
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)
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switch h.Rrtype {
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case TypeA:
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r, e = setA(h, c)
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default:
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println("RR not supported")
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}
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if se := slurpRemainder(c); se != nil {
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return nil, se
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}
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return r, e
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}
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func setA(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_A)
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rr.Hdr = h
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l := <-c
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rr.A = net.ParseIP(l.token)
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if rr.A == nil {
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return nil, &ParseError{err: "bad a", lex: l}
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}
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return rr, nil
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}
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func setAAAA(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_AAAA)
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rr.Hdr = h
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l := <-c
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rr.AAAA = net.ParseIP(l.token)
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if rr.AAAA == nil {
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return nil, &ParseError{err: "bad AAAA", lex: l}
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}
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return rr, nil
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}
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func setNS(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_NS)
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rr.Hdr = h
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l := <-c
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rr.Ns = l.token
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if ! IsDomainName(l.token) {
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return nil, &ParseError{err: "bad NS", lex: l}
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}
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return rr, nil
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}
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func setMX(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_MX)
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rr.Hdr = h
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l := <-c
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i, e := strconv.Atoui(l.token)
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rr.Pref = uint16(i)
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l = <-c // _BLANK
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l = <-c // _STRING
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rr.Mx = l.token
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if e != nil {
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return nil, &ParseError{err: "bad MX", lex: l}
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}
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return rr, nil
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}
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func setCNAME(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_CNAME)
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rr.Hdr = h
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action setCNAME {
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rdf := fields(data[mark:p], 1)
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rr := new(RR_CNAME)
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rr.Hdr = hdr
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rr.Hdr.Rrtype = TypeCNAME
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rr.Cname = rdf[0]
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if ! IsDomainName(rdf[0]) {
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zp.Err <- &ParseError{Error: "bad CNAME", name: rdf[0], line: l}
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return
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}
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zp.RR <- rr
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}
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func setCNAME(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_CNAME)
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rr.Hdr = h
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action setSOA {
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var (
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i uint
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err os.Error
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)
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rdf := fields(data[mark:p], 7)
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rr := new(RR_SOA)
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rr.Hdr = hdr
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rr.Hdr.Rrtype = TypeSOA
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rr.Ns = rdf[0]
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rr.Mbox = rdf[1]
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if ! IsDomainName(rdf[0]) {
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zp.Err <- &ParseError{Error: "bad SOA", name: rdf[0], line: l}
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return
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}
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if ! IsDomainName(rdf[1]) {
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zp.Err <- &ParseError{Error: "bad SOA", name: rdf[1], line: l}
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return
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}
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for j, s := range rdf[2:7] {
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if i, err = strconv.Atoui(s); err != nil {
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zp.Err <- &ParseError{Error: "bad SOA", name: s, line: l}
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return
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}
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switch j {
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case 0: rr.Serial = uint32(i)
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case 1: rr.Refresh = uint32(i)
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case 2: rr.Retry = uint32(i)
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case 3: rr.Expire = uint32(i)
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case 4: rr.Minttl = uint32(i)
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}
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}
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z.PushRR(rr)
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zp.RR <- rr
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}
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func setCNAME(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_CNAME)
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rr.Hdr = h
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action setDS {
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var (
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i uint
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e os.Error
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)
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rdf := fields(data[mark:p], 4)
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rr := new(RR_DS)
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rr.Hdr = hdr
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rr.Hdr.Rrtype = TypeDS
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if i, e = strconv.Atoui(rdf[0]); e != nil {
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zp.Err <- &ParseError{Error: "bad DS", name: rdf[0], line: l}
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return
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}
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rr.KeyTag = uint16(i)
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if i, e = strconv.Atoui(rdf[1]); e != nil {
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zp.Err <- &ParseError{Error: "bad DS", name: rdf[1], line: l}
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return
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}
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rr.Algorithm = uint8(i)
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if i, e = strconv.Atoui(rdf[2]); e != nil {
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zp.Err <- &ParseError{Error: "bad DS", name: rdf[2], line: l}
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return
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}
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rr.DigestType = uint8(i)
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rr.Digest = rdf[3]
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zp.RR <- rr
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}
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func setCNAME(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_CNAME)
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rr.Hdr = h
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action setDLV {
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var (
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i uint
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e os.Error
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)
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rdf := fields(data[mark:p], 4)
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rr := new(RR_DLV)
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rr.Hdr = hdr
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rr.Hdr.Rrtype = TypeDLV
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if i, e = strconv.Atoui(rdf[0]); e != nil {
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zp.Err <- &ParseError{Error: "bad DS", name: rdf[0], line: l}
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return
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}
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rr.KeyTag = uint16(i)
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if i, e = strconv.Atoui(rdf[1]); e != nil {
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zp.Err <- &ParseError{Error: "bad DS", name: rdf[1], line: l}
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return
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}
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rr.Algorithm = uint8(i)
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if i, e = strconv.Atoui(rdf[2]); e != nil {
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zp.Err <- &ParseError{Error: "bad DS", name: rdf[2], line: l}
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return
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}
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rr.DigestType = uint8(i)
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rr.Digest = rdf[3]
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zp.RR <- rr
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}
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func setCNAME(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_CNAME)
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rr.Hdr = h
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action setTA {
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var (
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i uint
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e os.Error
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)
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rdf := fields(data[mark:p], 4)
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rr := new(RR_TA)
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rr.Hdr = hdr
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rr.Hdr.Rrtype = TypeTA
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if i, e = strconv.Atoui(rdf[0]); e != nil {
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zp.Err <- &ParseError{Error: "bad DS", name: rdf[0], line: l}
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return
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}
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rr.KeyTag = uint16(i)
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if i, e = strconv.Atoui(rdf[1]); e != nil {
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zp.Err <- &ParseError{Error: "bad DS", name: rdf[1], line: l}
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return
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}
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rr.Algorithm = uint8(i)
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if i, e = strconv.Atoui(rdf[2]); e != nil {
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zp.Err <- &ParseError{Error: "bad DS", name: rdf[2], line: l}
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return
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}
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rr.DigestType = uint8(i)
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rr.Digest = rdf[3]
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zp.RR <- rr
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}
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func setCNAME(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_CNAME)
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rr.Hdr = h
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action setDNSKEY {
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var (
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i uint
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e os.Error
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)
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rdf := fields(data[mark:p], 4)
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rr := new(RR_DNSKEY)
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rr.Hdr = hdr
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rr.Hdr.Rrtype = TypeDNSKEY
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if i, e = strconv.Atoui(rdf[0]); e != nil {
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zp.Err <- &ParseError{Error: "bad DNSKEY", name: rdf[0], line: l}
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return
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}
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rr.Flags = uint16(i)
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if i, e = strconv.Atoui(rdf[1]); e != nil {
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zp.Err <- &ParseError{Error: "bad DNSKEY", name: rdf[1], line: l}
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return
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}
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rr.Protocol = uint8(i)
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if i, e = strconv.Atoui(rdf[2]); e != nil {
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zp.Err <- &ParseError{Error: "bad DNSKEY", name: rdf[2], line: l}
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return
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}
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rr.Algorithm = uint8(i)
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rr.PublicKey = rdf[3]
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zp.RR <- rr
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}
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func setCNAME(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_CNAME)
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rr.Hdr = h
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action setRRSIG {
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var (
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i uint
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j uint32
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err os.Error
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)
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rdf := fields(data[mark:p], 9)
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rr := new(RR_RRSIG)
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rr.Hdr = hdr
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rr.Hdr.Rrtype = TypeRRSIG
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if _, ok := str_rr[strings.ToUpper(rdf[0])]; !ok {
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zp.Err <- &ParseError{Error: "bad RRSIG", name: rdf[0], line: l}
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return
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}
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rr.TypeCovered = str_rr[strings.ToUpper(rdf[0])]
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if i, err = strconv.Atoui(rdf[1]); err != nil {
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zp.Err <- &ParseError{Error: "bad RRSIG", name: rdf[1], line: l}
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return
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}
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rr.Algorithm = uint8(i)
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if i, err = strconv.Atoui(rdf[2]); err != nil {
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zp.Err <- &ParseError{Error: "bad RRSIG", name: rdf[2], line: l}
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return
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}
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rr.Labels = uint8(i)
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if i, err = strconv.Atoui(rdf[3]); err != nil {
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zp.Err <- &ParseError{Error: "bad RRSIG", name: rdf[3], line: l}
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return
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}
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rr.OrigTtl = uint32(i)
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if j, err = dateToTime(rdf[4]); err != nil {
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zp.Err <- &ParseError{Error: "bad RRSIG", name: rdf[4], line: l}
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return
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}
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rr.Expiration = j
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if j, err = dateToTime(rdf[5]); err != nil {
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zp.Err <- &ParseError{Error: "bad RRSIG", name: rdf[5], line: l}
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return
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}
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rr.Inception = j
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if i, err = strconv.Atoui(rdf[6]); err != nil {
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zp.Err <- &ParseError{Error: "bad RRSIG", name: rdf[3], line: l}
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return
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}
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rr.KeyTag = uint16(i)
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rr.SignerName = rdf[7]
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if ! IsDomainName(rdf[7]) {
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zp.Err <- &ParseError{Error: "bad RRSIG", name: rdf[7], line: l}
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return
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}
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// Check base64 TODO
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rr.Signature = rdf[8]
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zp.RR <- rr
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}
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func setCNAME(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_CNAME)
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rr.Hdr = h
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action setNSEC {
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rdf := fields(data[mark:p], 0)
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rr := new(RR_NSEC)
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rr.Hdr = hdr
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rr.Hdr.Rrtype = TypeNSEC
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rr.NextDomain = rdf[0]
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rr.TypeBitMap = make([]uint16, len(rdf)-1)
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// Fill the Type Bit Map
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for i := 1; i < len(rdf); i++ {
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// Check if its there in the map TODO
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rr.TypeBitMap[i-1] = str_rr[strings.ToUpper(rdf[i])]
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}
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zp.RR <- rr
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}
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func setCNAME(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_CNAME)
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rr.Hdr = h
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action setNSEC3 {
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var (
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i uint
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e os.Error
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)
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rdf := fields(data[mark:p], 0)
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rr := new(RR_NSEC3)
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rr.Hdr = hdr
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rr.Hdr.Rrtype = TypeNSEC3
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if i, e = strconv.Atoui(rdf[0]); e != nil {
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zp.Err <- &ParseError{Error: "bad NSEC3", name: rdf[0], line: l}
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return
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}
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rr.Hash = uint8(i)
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if i, e = strconv.Atoui(rdf[1]); e != nil {
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zp.Err <- &ParseError{Error: "bad NSEC3", name: rdf[1], line: l}
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return
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}
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rr.Flags = uint8(i)
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if i, e = strconv.Atoui(rdf[2]); e != nil {
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zp.Err <- &ParseError{Error: "bad NSEC3", name: rdf[2], line: l}
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return
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}
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rr.Iterations = uint16(i)
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rr.SaltLength = uint8(len(rdf[3]))
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rr.Salt = rdf[3]
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rr.HashLength = uint8(len(rdf[4]))
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rr.NextDomain = rdf[4]
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rr.TypeBitMap = make([]uint16, len(rdf)-5)
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// Fill the Type Bit Map
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for i := 5; i < len(rdf); i++ {
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// Check if its there in the map TODO
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rr.TypeBitMap[i-5] = str_rr[strings.ToUpper(rdf[i])]
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}
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zp.RR <- rr
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}
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func setCNAME(h RR_Header, c chan Lex) (RR, error) {
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rr := new(RR_CNAME)
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rr.Hdr = h
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action setNSEC3PARAM {
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var (
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i int
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e os.Error
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)
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rdf := fields(data[mark:p], 4)
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rr := new(RR_NSEC3PARAM)
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rr.Hdr = hdr
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rr.Hdr.Rrtype = TypeNSEC3PARAM
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if i, e = strconv.Atoi(rdf[0]); e != nil {
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zp.Err <- &ParseError{Error: "bad NSEC3PARAM", name: rdf[0], line: l}
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return
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}
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rr.Hash = uint8(i)
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if i, e = strconv.Atoi(rdf[1]); e != nil {
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zp.Err <- &ParseError{Error: "bad NSEC3PARAM", name: rdf[1], line: l}
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return
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|
}
|
||
|
rr.Flags = uint8(i)
|
||
|
if i, e = strconv.Atoi(rdf[2]); e != nil {
|
||
|
zp.Err <- &ParseError{Error: "bad NSEC3PARAM", name: rdf[2], line: l}
|
||
|
return
|
||
|
}
|
||
|
rr.Iterations = uint16(i)
|
||
|
rr.Salt = rdf[3]
|
||
|
rr.SaltLength = uint8(len(rr.Salt))
|
||
|
zp.RR <- rr
|
||
|
}
|
||
|
|
||
|
func setCNAME(h RR_Header, c chan Lex) (RR, error) {
|
||
|
rr := new(RR_CNAME)
|
||
|
rr.Hdr = h
|
||
|
action setTXT {
|
||
|
rdf := fields(data[mark:p], 1)
|
||
|
rr := new(RR_TXT)
|
||
|
rr.Hdr = hdr
|
||
|
rr.Hdr.Rrtype = TypeTXT
|
||
|
rr.Txt = rdf[0]
|
||
|
zp.RR <- rr
|
||
|
}
|
||
|
|
||
|
func setCNAME(h RR_Header, c chan Lex) (RR, error) {
|
||
|
rr := new(RR_CNAME)
|
||
|
rr.Hdr = h
|
||
|
action setSRV {
|
||
|
}
|
||
|
func setCNAME(h RR_Header, c chan Lex) (RR, error) {
|
||
|
rr := new(RR_CNAME)
|
||
|
rr.Hdr = h
|
||
|
|
||
|
action setCERT {
|
||
|
}
|
||
|
|
||
|
func setCNAME(h RR_Header, c chan Lex) (RR, error) {
|
||
|
rr := new(RR_CNAME)
|
||
|
rr.Hdr = h
|
||
|
action setPTR {
|
||
|
}
|
||
|
|
||
|
func setCNAME(h RR_Header, c chan Lex) (RR, error) {
|
||
|
rr := new(RR_CNAME)
|
||
|
rr.Hdr = h
|
||
|
action setDNAME {
|
||
|
}
|
||
|
|
||
|
func setCNAME(h RR_Header, c chan Lex) (RR, error) {
|
||
|
rr := new(RR_CNAME)
|
||
|
rr.Hdr = h
|
||
|
action setNAPTR {
|
||
|
}
|
||
|
|
||
|
func setCNAME(h RR_Header, c chan Lex) (RR, error) {
|
||
|
rr := new(RR_CNAME)
|
||
|
rr.Hdr = h
|
||
|
action setSSHFP {
|
||
|
var (
|
||
|
i int
|
||
|
e os.Error
|
||
|
)
|
||
|
rdf := fields(data[mark:p], 3)
|
||
|
rr := new(RR_SSHFP)
|
||
|
rr.Hdr = hdr
|
||
|
rr.Hdr.Rrtype = TypeSSHFP
|
||
|
if i, e = strconv.Atoi(rdf[0]); e != nil {
|
||
|
zp.Err <- &ParseError{Error: "bad SSHFP", name: rdf[0], line: l}
|
||
|
return
|
||
|
}
|
||
|
rr.Algorithm = uint8(i)
|
||
|
if i, e = strconv.Atoi(rdf[1]); e != nil {
|
||
|
zp.Err <- &ParseError{Error: "bad SSHFP", name: rdf[1], line: l}
|
||
|
return
|
||
|
}
|
||
|
rr.Type = uint8(i)
|
||
|
rr.FingerPrint = rdf[2]
|
||
|
zp.RR <- rr
|
||
|
}
|