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Tidied up 'Parse UDP' operation

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n1474335 2019-08-23 10:56:13 +01:00
parent 46fa7475cf
commit 0031345383
3 changed files with 16 additions and 23 deletions
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34
src/core/operations/ParseUDP.mjs
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@ -24,37 +24,35 @@ class ParseUDP extends Operation {
this.module = "Default";
this.description = "Parses a UDP header and payload (if present).";
this.infoURL = "https://wikipedia.org/wiki/User_Datagram_Protocol";
this.inputType = "byteArray";
this.inputType = "ArrayBuffer";
this.outputType = "json";
this.presentType = "html";
this.args = [];
}
/**
* @param {Uint8Array} input
* @param {ArrayBuffer} input
* @returns {Object}
*/
run(input, args) {
if (input.length < "8"){
if (input.byteLength < 8) {
throw new OperationError("Need 8 bytes for a UDP Header");
}
const s = new Stream(input);
//Parse Header
const s = new Stream(new Uint8Array(input));
// Parse Header
const UDPPacket = {
"Source port": s.readInt(2),
"Destination port": s.readInt(2),
"Length": s.readInt(2),
"Checksum": toHex(s.getBytes(2), "0x")
"Checksum": toHex(s.getBytes(2), "")
};
//Parse data if present
if (s.hasMore()){
UDPPacket.Data = toHex(s.getBytes(UDPPacket.Length - 8), "0x");
// Parse data if present
if (s.hasMore()) {
UDPPacket.Data = toHex(s.getBytes(UDPPacket.Length - 8), "");
}
return UDPPacket;
}
/**
@ -64,21 +62,17 @@ class ParseUDP extends Operation {
*/
present(data) {
const html = [];
html.push("<table class='table table-hover table-sm table-bordered' style='table-layout: fixed'>");
html.push("<table class='table table-hover table-sm table-bordered table-nonfluid' style='table-layout: fixed'>");
html.push("<tr>");
html.push("<th>Field</th>");
html.push("<th>Value</th>");
html.push("</tr>");
for (const key in data) {
switch (key){
default: {
html.push("<tr>");
html.push("<td style=\"word-wrap:break-word\">" + key + "</td>");
html.push("<td>" + data[key] + "</td>");
html.push("</tr>");
}
}
html.push("<tr>");
html.push("<td style=\"word-wrap:break-word\">" + key + "</td>");
html.push("<td>" + data[key] + "</td>");
html.push("</tr>");
}
html.push("</table>");
return html.join("");