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ip4.go
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ip4.go
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/*
* NETCAP - Traffic Analysis Framework
* Copyright (c) 2017 Philipp Mieden <dreadl0ck [at] protonmail [dot] ch>
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package types
import (
"encoding/hex"
"strconv"
"strings"
)
func (i IPv4) CSVHeader() []string {
return filter([]string{
"Timestamp",
"Version", // int32
"IHL", // int32
"TOS", // int32
"Length", // int32
"Id", // int32
"Flags", // int32
"FragOffset", // int32
"TTL", // int32
"Protocol", // int32
"Checksum", // int32
"SrcIP", // string
"DstIP", // string
"Padding", // []byte
"Options", // []*IPv4Option
"PayloadEntropy", // float64
"PayloadSize", // int32
})
}
func (i IPv4) CSVRecord() []string {
var opts []string
for _, o := range i.Options {
opts = append(opts, o.ToString())
}
return filter([]string{
formatTimestamp(i.Timestamp),
formatInt32(i.Version), // int32
formatInt32(i.IHL), // int32
formatInt32(i.TOS), // int32
formatInt32(i.Length), // int32
formatInt32(i.Id), // int32
formatInt32(i.Flags), // int32
formatInt32(i.FragOffset), // int32
formatInt32(i.TTL), // int32
formatInt32(i.Protocol), // int32
formatInt32(i.Checksum), // int32
i.SrcIP, // string
i.DstIP, // string
hex.EncodeToString(i.Padding), // []byte
strings.Join(opts, ""), // []*IPv4Option
strconv.FormatFloat(i.PayloadEntropy, 'f', 6, 64), // float64
formatInt32(i.PayloadSize), // int32
})
}
func (i IPv4) NetcapTimestamp() string {
return i.Timestamp
}
func (i IPv4Option) ToString() string {
var b strings.Builder
b.WriteString(begin)
b.WriteString(formatInt32(i.OptionType))
b.WriteString(sep)
b.WriteString(formatInt32(i.OptionLength))
b.WriteString(sep)
b.WriteString(hex.EncodeToString(i.OptionData))
b.WriteString(end)
return b.String()
}