PHP simple google OAuth in Linux

Steps involved!

1. Create a parent directory php-google-signin
2. Download google-api-php-client  library from Github to parent dir
3. Obtain OAuth 2.0 client credentials from the Google API Console. Save the json file as key.json  in to parent dir
4. Set your redirect URL in google api key console

Create a file index.php

<?php
    require_once __DIR__.'/google-api-php-client-2.1.1/vendor/autoload.php';
    date_default_timezone_set('asia/kolkata');
    session_start();

    // to find localhost and production server https
    if ($_SERVER['SERVER_NAME'] == "localhost") {
        $protocol = "http://";
    }else{
        $protocol = "https://";
    }
    $redirect_uri = $protocol . $_SERVER['HTTP_HOST'] . "/index.php";
    $client = new Google_Client();
    $client->setAuthConfigFile('key.json');
    $client->setRedirectUri($protocol . $_SERVER['HTTP_HOST'] . "/index.php");
    $client->setScopes('email'); // You want to retrieve email and domain name
    

// on logout
    if (isset($_REQUEST['logout'])) {
      unset($_SESSION['id_token_token']);
    }

// once you get code after auth success
    if (isset($_GET['code'])) {
      $token = $client->fetchAccessTokenWithAuthCode($_GET['code']);
      $client->setAccessToken($token);
      $_SESSION['id_token_token'] = $token;
      header('Location: ' . filter_var($redirect_uri, FILTER_SANITIZE_URL));
    }
    if ( !empty($_SESSION['id_token_token']) && isset($_SESSION['id_token_token']['id_token']) ) {
      $client->setAccessToken($_SESSION['id_token_token']);
    } else {
      $authUrl = $client->createAuthUrl();
    }
    // success
    if ($client->getAccessToken()) {
      $token_data = $client->verifyIdToken();

// print all the data related after auth
      print_r($token_data)
    }
?>

Convert sec to hh:mm:sec in Javascript

Convert seconds to hour:minute:seconds in javascript

This pattern can be used to calculate call duration

Number.prototype.calltimer = function () {
    var sec_num = parseInt(this, 10);
    var hours   = Math.floor(sec_num / 3600);
    var minutes = Math.floor((sec_num - (hours * 3600)) / 60);
    var seconds = sec_num - (hours * 3600) - (minutes * 60);
    if (hours   < 10) {hours   = "0"+hours;}
    if (minutes < 10) {minutes = "0"+minutes;}
    if (seconds < 10) {seconds = "0"+seconds;}
    return hours+':'+minutes+':'+seconds;
}

var time = 120; 

time.calltimer()

will give you "00:02:00"

linux find and cp/mv to a path

If you want to find for a particular string/date and then do list/copy/move, then below command will help you out

Find .wav files created on Dec 30th
 find . -type f -name "*.wav" -newermt 2016-12-30 ! -newermt 2016-12-31 -exec ls -l {} \;

If above cmd shows proper output then try
find . -type f -name "*.wav" -newermt 2016-12-30 ! -newermt 2016-12-31 -exec cp  {} /dest/path/ \;

Node render html file and pass json data to html

Create a server.js file with below code
var express = require('express'),
app = express(),
        http = require('http'),
        httpServer = http.createServer(app);

app.use('/',express.static(path.join(__dirname, '/public')));
app.set('view engine', 'ejs'); // send HTML files
app.engine('html', require('ejs').renderFile);

app.get('test',function(req, res){
 res.render('hello.html',{ 'id' : 'w8m4r9vdfm' });
});

httpServer.listen(8000,"0.0.0.0",function(){
    console.log('http on 8000');
});

Folder structure:
app
  server.js
  public/hello.html

Exclude a folder while copy in linux

let's say you have main Folder application with 3 folders inside
folderA  folderB folderC and want to exclude folderA the you can simply execute below command

rsync -av --progress application /destinationfolder --exclude folderA  

Shared library support linux

Shared libs are know by linking its path in /etc/ld.so.conf.d/

Recently i came across an error in asterisk while trying to compile OPUS codec as shared lib support to asterisk

asterisk: error while loading shared libraries: libopus.so

But OPUS was install under /usr/local/lib

Now to make it available to asterisk do

echo '/usr/local/lib' > /etc/ld.so.conf.d/usr_local.conf

then update ldconfig by
ldconfig && ldconfig -v

Redis server

Redis to run in background

redis-server --daemonize yes