1
1
mirror of https://github.com/wader/fq.git synced 2024-12-23 05:13:30 +03:00
fq/format/dns/dns_tcp.go
Mattias Wadman 8e0dde03d0 decode: Support multiple format args and some rename and refactor
This will allow passing both cli options and format options to sub decoder.
Ex: pass keylog option to a tls decoder when decoding a pcap.
Ex: pass decode options to a format inside a http body inside a pcap.

Add ArgAs method to lookup argument based on type. This also makes the format
decode function have same signature as sub decoders in the decode API.

This change decode.Format a bit:
DecodeFn is now just func(d *D) any
DecodeInArg renamed to DefaultInArg
2023-02-18 21:38:51 +01:00

25 lines
487 B
Go

package dns
import (
"github.com/wader/fq/format"
"github.com/wader/fq/pkg/decode"
"github.com/wader/fq/pkg/interp"
)
func init() {
interp.RegisterFormat(decode.Format{
Name: format.DNS_TCP,
Description: "DNS packet (TCP)",
Groups: []string{format.TCP_STREAM},
DecodeFn: dnsTCPDecode,
})
}
func dnsTCPDecode(d *decode.D) any {
var tsi format.TCPStreamIn
if d.ArgAs(&tsi) {
tsi.MustIsPort(d.Fatalf, format.TCPPortDomain)
}
return dnsDecode(d, true)
}