mirror of
https://github.com/wader/fq.git
synced 2024-11-27 06:04:47 +03:00
394717cae8
SLL2 support merged upstream https://github.com/gopacket/gopacket/pull/1 This also cuts down a bit on some indirect deps
78 lines
2.4 KiB
Go
78 lines
2.4 KiB
Go
package pcap
|
|
|
|
import (
|
|
"github.com/wader/fq/format"
|
|
"github.com/wader/fq/format/inet/flowsdecoder"
|
|
"github.com/wader/fq/pkg/bitio"
|
|
"github.com/wader/fq/pkg/decode"
|
|
)
|
|
|
|
var linkToDecodeFn = map[int]func(fd *flowsdecoder.Decoder, bs []byte) error{
|
|
format.LinkTypeNULL: (*flowsdecoder.Decoder).LoopbackFrame,
|
|
format.LinkTypeETHERNET: (*flowsdecoder.Decoder).EthernetFrame,
|
|
format.LinkTypeLINUX_SLL: (*flowsdecoder.Decoder).SLLPacket,
|
|
format.LinkTypeLINUX_SLL2: (*flowsdecoder.Decoder).SLL2Packet,
|
|
}
|
|
|
|
// TODO: make some of this shared if more packet capture formats are added
|
|
func fieldFlows(d *decode.D, fd *flowsdecoder.Decoder, tcpStreamFormat decode.Group, ipv4PacketFormat decode.Group) {
|
|
d.FieldArray("ipv4_reassembled", func(d *decode.D) {
|
|
for _, p := range fd.IPV4Reassembled {
|
|
br := bitio.NewBitReader(p.Datagram, -1)
|
|
if dv, _, _ := d.TryFieldFormatBitBuf(
|
|
"ipv4_packet",
|
|
br,
|
|
ipv4PacketFormat,
|
|
nil,
|
|
); dv == nil {
|
|
d.FieldRootBitBuf("ipv4_packet", br)
|
|
}
|
|
}
|
|
})
|
|
|
|
d.FieldArray("tcp_connections", func(d *decode.D) {
|
|
for _, s := range fd.TCPConnections {
|
|
d.FieldStruct("tcp_connection", func(d *decode.D) {
|
|
f := func(d *decode.D, td *flowsdecoder.TCPDirection, tsi format.TCPStreamIn) {
|
|
d.FieldValueStr("ip", td.Endpoint.IP.String())
|
|
d.FieldValueU("port", uint64(td.Endpoint.Port), format.TCPPortMap)
|
|
d.FieldValueBool("has_start", td.HasStart)
|
|
d.FieldValueBool("has_end", td.HasEnd)
|
|
d.FieldValueU("skipped_bytes", td.SkippedBytes)
|
|
|
|
br := bitio.NewBitReader(td.Buffer.Bytes(), -1)
|
|
if dv, _, _ := d.TryFieldFormatBitBuf(
|
|
"stream",
|
|
br,
|
|
tcpStreamFormat,
|
|
tsi,
|
|
); dv == nil {
|
|
d.FieldRootBitBuf("stream", br)
|
|
}
|
|
}
|
|
|
|
d.FieldStruct("client", func(d *decode.D) {
|
|
f(d, &s.Client, format.TCPStreamIn{
|
|
IsClient: true,
|
|
HasStart: s.Client.HasStart,
|
|
HasEnd: s.Client.HasEnd,
|
|
SkippedBytes: s.Client.SkippedBytes,
|
|
SourcePort: s.Client.Endpoint.Port,
|
|
DestinationPort: s.Server.Endpoint.Port,
|
|
})
|
|
})
|
|
d.FieldStruct("server", func(d *decode.D) {
|
|
f(d, &s.Server, format.TCPStreamIn{
|
|
IsClient: false,
|
|
HasStart: s.Server.HasStart,
|
|
HasEnd: s.Server.HasEnd,
|
|
SkippedBytes: s.Server.SkippedBytes,
|
|
SourcePort: s.Server.Endpoint.Port,
|
|
DestinationPort: s.Client.Endpoint.Port,
|
|
})
|
|
})
|
|
})
|
|
}
|
|
})
|
|
}
|