HIP unpack support -- not tested
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parent
f45d4d933d
commit
c82a1af1e3
72
msg.go
72
msg.go
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@ -109,7 +109,7 @@ var Rr_str = map[uint16]string{
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TypeOPT: "OPT",
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TypeDS: "DS",
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TypeDHCID: "DHCID",
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TypeHIP: "HIP",
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TypeHIP: "HIP",
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TypeIPSECKEY: "IPSECKEY",
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TypeSSHFP: "SSHFP",
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TypeRRSIG: "RRSIG",
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@ -370,21 +370,21 @@ func packStructValue(val reflect.Value, msg []byte, off int, compression map[str
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default:
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println("dns: unknown tag packing slice", val.Type().Field(i).Tag)
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return lenmsg, false
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case "txt":
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case "txt":
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for j := 0; j < val.Field(i).Len(); j++ {
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element := val.Field(i).Index(j).String()
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// Counted string: 1 byte length.
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if len(element) > 255 || off+1+len(element) > lenmsg {
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println("dns: overflow packing TXT string")
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return len(msg), false
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}
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msg[off] = byte(len(element))
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off++
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for i := 0; i < len(element); i++ {
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msg[off+i] = element[i]
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}
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off += len(element)
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}
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element := val.Field(i).Index(j).String()
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// Counted string: 1 byte length.
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if len(element) > 255 || off+1+len(element) > lenmsg {
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println("dns: overflow packing TXT string")
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return len(msg), false
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}
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msg[off] = byte(len(element))
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off++
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for i := 0; i < len(element); i++ {
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msg[off+i] = element[i]
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}
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off += len(element)
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}
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case "opt": // edns
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// Length of the entire option section
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for j := 0; j < val.Field(i).Len(); j++ {
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@ -642,22 +642,34 @@ func unpackStructValue(val reflect.Value, msg []byte, off int) (off1 int, ok boo
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default:
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println("dns: unknown tag unpacking slice", val.Type().Field(i).Tag)
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return lenmsg, false
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// Need to add domain-name for HIP
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case "txt":
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txt := make([]string,0)
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case "domain-name":
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// HIP record slice of name (or none)
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servers := make([]string, 0)
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var s string
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for off < lenmsg {
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s, off, ok = UnpackDomainName(msg, off)
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if !ok {
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println("dns: failure unpacking domain-name")
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return lenmsg, false
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}
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servers = append(servers, s)
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}
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fv.Set(reflect.ValueOf(servers))
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case "txt":
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txt := make([]string, 0)
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rdlength := int(val.FieldByName("Hdr").FieldByName("Rdlength").Uint())
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Txts:
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l := int(msg[off])
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if off + l + 1 > lenmsg {
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println("dns: failure unpacking txt strings")
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return lenmsg, false
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}
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txt = append(txt, string(msg[off+1:off+l+1]))
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off += l+1
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if off < rdlength {
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// More
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goto Txts
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}
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Txts:
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l := int(msg[off])
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if off+l+1 > lenmsg {
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println("dns: failure unpacking txt strings")
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return lenmsg, false
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}
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txt = append(txt, string(msg[off+1:off+l+1]))
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off += l + 1
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if off < rdlength {
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// More
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goto Txts
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}
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fv.Set(reflect.ValueOf(txt))
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case "opt": // edns0
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if off+2 > lenmsg {
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