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@OllieJones
OllieJones / wordpress-hooks.php
Last active Mar 16, 2022
Register WordPress Hooks Declaratively
View wordpress-hooks.php
<?php
namespace OllieJones;
use ReflectionClass;
use ReflectionMethod;
/**
* Automatically register WordPress hooks in classes derived from this one.
*
@OllieJones
OllieJones / h264tools.js
Created Feb 4, 2021
h.264: Create an 'avcC' atom from a sequence of NALUs emitted by MediaRecorder
View h264tools.js
'use static'
// noinspection JSUnusedLocalSymbols,JSUnusedGlobalSymbols
/**
* Tools for handling H.264 bitstream issues.
*/
/**
* Handle the parsing and creation of "avcC" atoms.
*/
@OllieJones
OllieJones / queue.js
Last active Sep 17, 2021
Queue class, super simple, based on Kate Morley's queue code.
View queue.js
'use strict';
/*
Queue.js
A class to represent a queue
Created by Kate Morley - https://code.iamkate.com/ - and released under the terms
of the CC0 1.0 Universal legal code:
View embl-browser.js
'use strict';
/*globals ebml */
if ( !window.ebml ) window.ebml = {};
ebml.EbmlDecoder = function EbmlDecoder( options ) {
var schema = {
"80": {
@OllieJones
OllieJones / streamPeek.js
Last active Sep 5, 2018
Read useful information from a MP4 data stream
View streamPeek.js
/*
* this code examines a MP4 data stream.
* it looks at the appropriate atoms to determine width, height, and frame rate.
*
* It is a sleazy approach, the equivalent of grepping for necessary
* boxes rather than using box lengths to parse the file.
*/
function read32( buff, fourcc, offset ) {
let start = 0;
@OllieJones
OllieJones / validateGithubWebhook.js
Created Oct 5, 2017
Github webhooks use a shared secret for validation. The webhook itself contains a header X-Hub-Signature containing a hash of the webhook body. This function checks that hash against the body.
View validateGithubWebhook.js
'use strict';
const crypto = require( 'crypto' );
function validateGithub( secret, signature, rawBody ) {
if( (!signature) || signature.length === 0 ) return false;
if( (!rawBody) || rawBody.length === 0 ) return false;
try {
const splits = signature.split( '=' );
@OllieJones
OllieJones / nonce.js
Created Oct 3, 2017
Snippets of Javascript.
View nonce.js
'use strict';
/* node.js nonce: crypto-quality random session key (filename safe base64, rfc4648) */
const btoa = require( 'btoa' );
const crypto = require( 'crypto' );
function nonce( length ) {
const rndLen = 1+(( (length)+(length<<1) +3)>>2);
const randomArray = crypto.randomBytes( rndLen );
@OllieJones
OllieJones / explanation.md
Last active Jul 20, 2016
Detecting a disconnected RDP session in a unix / linux / bsd server.
View explanation.md

Here is a way to obtain a list of disconnected xrdp sessions. It relies on the fact that the xrdp server is, in normal X session manager usage, the only client that establishes a TCP connection to the Xvnc X Window System display server. (The other client programs -- the ones doing things for the user -- use UNIX-domain sockets for their display connections).

When an xrdp session is active, the associated Xvnc display server has two TCP connections, one in the ESTABLISHED state, and the other in the LISTEN state. That looks something like this using the lsof(1) program.

$ sudo lsof  -b -w -n -c /^Xvnc$/b -a -iTCP:5900-5999 
COMMAND  PID  USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
Xvnc    1625 guest    1u  IPv4 252910      0t0  TCP 127.0.0.1:5910 (LISTEN)
Xvnc    1625 guest    9u  IPv4 261226      0t0  TCP 127.0.0.1:5910->127.0.0.1:35242 (ESTABLISHED)

If the user of the remote session abandons it by closing the RDP connection (or, in the case of an Apache Guacamole RDP session

@OllieJones
OllieJones / DataTableResultSet.cs
Last active Mar 30, 2022
C# code for handling Ajax calls for the DataTables.net client table-rendering plugin.
View DataTableResultSet.cs
/// <summary>
/// Resultset to be JSON stringified and set back to client.
/// </summary>
[Serializable]
[SuppressMessage("ReSharper", "InconsistentNaming")]
public class DataTableResultSet
{
/// <summary>Array of records. Each element of the array is itself an array of columns</summary>
public List<List<string>> data = new List<List<string>>();
View ActivateSigAlgoritms.cs
CryptoConfig.AddAlgorithm(typeof(RsaPkCs1Sha512SignatureDescription),
"http://www.w3.org/2001/04/xmldsig-more#rsa-sha512");
CryptoConfig.AddAlgorithm(typeof(RsaPkCs1Sha384SignatureDescription),
"http://www.w3.org/2001/04/xmldsig-more#rsa-sha384");
CryptoConfig.AddAlgorithm(typeof(RsaPkCs1Sha256SignatureDescription),
"http://www.w3.org/2001/04/xmldsig-more#rsa-sha256");