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add packers for ipv4/6 to

This commit is contained in:
Miek Gieben 2010-08-04 23:41:05 +02:00
parent 2001d57c2e
commit ddeeadc22a
1 changed files with 23 additions and 0 deletions
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23
dnsmsg.go
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@ -177,6 +177,29 @@ func packStructValue(val *reflect.StructValue, msg []byte, off int) (off1 int, o
BadType:
fmt.Fprintf(os.Stderr, "net: dns: unknown packing type %v", f.Type)
return len(msg), false
case *reflect.SliceValue:
switch f.Tag {
default:
fmt.Fprintf(os.Stderr, "net: dns: unknown IP tag %v", f.Tag)
return len(msg), false
case "ipv4":
if fv.Len() > net.IPv4len || off+fv.Len() > len(msg) {
return len(msg), false
}
msg[off] = byte(fv.Elem(0).(*reflect.UintValue).Get())
msg[off+1] = byte(fv.Elem(1).(*reflect.UintValue).Get())
msg[off+2] = byte(fv.Elem(2).(*reflect.UintValue).Get())
msg[off+3] = byte(fv.Elem(3).(*reflect.UintValue).Get())
off += net.IPv4len
case "ipv6":
if fv.Len() > net.IPv6len || off+fv.Len() > len(msg) {
return len(msg), false
}
for j:=0; j<net.IPv6len; j++ {
msg[off] = byte(fv.Elem(j).(*reflect.UintValue).Get())
off++
}
}
case *reflect.StructValue:
off, ok = packStructValue(fv, msg, off)
case *reflect.UintValue: