pasoib8_protocols

package main

import (
    "net/http"

    "github.com/google/gopacket/layers"
)

//SaveTCPLayer saves data from TCP fields
func SaveTCPLayer(w http.ResponseWriter, req *http.Request) layers.TCP {
    var (
        tcp layers.TCP
    )

    tcp.SrcPort = layers.TCPPort(StringToUint16(req.FormValue("tcpsrcPort")))
    tcp.DstPort = layers.TCPPort(StringToUint16(req.FormValue("tcpdstPort")))
    tcp.Seq = StringToUint32(req.FormValue("tcpseq"))
    tcp.Ack = StringToUint32(req.FormValue("tcpack"))
    tcp.DataOffset = StringToUint8(req.FormValue("tcpoffset"))
    tcp.FIN = RadioToBool(req.FormValue("finflag"))
    tcp.SYN = RadioToBool(req.FormValue("synflag"))
    tcp.RST = RadioToBool(req.FormValue("rstflag"))
    tcp.PSH = RadioToBool(req.FormValue("pshflag"))
    tcp.ACK = RadioToBool(req.FormValue("ackflag"))
    tcp.URG = RadioToBool(req.FormValue("urgflag"))
    tcp.ECE = RadioToBool(req.FormValue("eceflag"))
    tcp.CWR = RadioToBool(req.FormValue("cwrflag"))
    tcp.NS = RadioToBool(req.FormValue("nsflag"))

    tcp.Window = StringToUint16(req.FormValue("window"))
    tcp.Checksum = StringToUint16(req.FormValue("checksumtcp"))
    tcp.Options = append(tcp.Options, layers.TCPOption{
        OptionType:   layers.TCPOptionKind(StringToUint8(req.FormValue("tcpoptionType"))),
        OptionLength: StringToUint8(req.FormValue("tcpoptionLength")),
        OptionData:   []byte(req.FormValue("tcpoptionData")),
    })
    return tcp
}

//SaveUDPLayer saves data from UDP fields
func SaveUDPLayer(w http.ResponseWriter, req *http.Request) layers.UDP {
    var (
        udp layers.UDP
    )

    udp.Length = StringToUint16(req.FormValue("udplength"))
    udp.Checksum = StringToUint16(req.FormValue("udpchecksum"))
    udp.SrcPort = layers.UDPPort(StringToUint16(req.FormValue("udpsrcPort")))
    udp.DstPort = layers.UDPPort(StringToUint16(req.FormValue("udpdstPort")))
    return udp
}

//SaveICMPLayer saves data fro m ICMP fields
func SaveICMPLayer(w http.ResponseWriter, req *http.Request) layers.ICMPv4 {
    var (
        icmp layers.ICMPv4
    )
    icmp.TypeCode = layers.CreateICMPv4TypeCode(8, 0)
    icmp.Id = StringToUint16(req.FormValue("icmpid"))
    icmp.Seq = StringToUint16(req.FormValue("icmpseq"))
    icmp.Checksum = StringToUint16(req.FormValue("icmpchecksum"))
    //icmp.TypeCode = layers.ICMPv4TypeCode(StringToUint16(req.FormValue("typecode")))
    return icmp
}