Tips Posts

Nowadays, people are hacking secure data systems, so will See the security testing criteria for reCAPTCHA forms.

reCAPTCHA is a technology that assesses the probability that the entity that uses your web code (page, app, portal, etc.) is a human and not a bot (or the other way around). Grabbing information of behavior (of a user or a bot) encapsulates it in the token that gets sent to your server. On your server, the token is being sent again to Google for returning the assessment on how probable it is that the token was generated by a human. Part of the response returned from Google to your server:

Let's See the points how to Test 🛠️

First, we validate from the frontend

on any reCAPTCHA from removing that div from inspect element and then trying to save there must be valid and records should not store on the backend as shown in the image.

Remove this div then save the form there should be a validation message for reCAPTCHA verification and the form should not be saved, if the form is submitted then the data were stored in the data table which was False to the system.

Now Let's see how we validate from the postman

First, add testing form URL on browser and apply Post method and on body add all fields which are added in form lets see on the image.

Now add on the header at Key column CSRF token, X-Requested, cookie and add its perspective value as shown in the image.

CSRF token and XSRF-TOKEN will store in the cookie which will get from the front page from inspect element.

Now, click on send request and validate the status should be false as shown in the image

If the status changes to true, then the data stored in a table & will create a problem, and the reCAPTCHA form will validate false.

Hence, reCAPTCHA form Test, Hope this helps.

Last week, we run into a problem for one of the large Gatsby + ReactJS + Laravel projects in hosting which is hosted with Apache Webserver on Amazon AWS EC2. The problem we were facing was, for some reason, when we reload the Gatsby website, it was giving a 404 error page.

If you open a home page and then a normal visit then the website will fully function, but if you reload the page then it gives an error. And we found it happens when we are using Dynamic routing of React Route in Gatsby as per show in Gatsby documentation here.

Also, what we found, if we test the website build with gatsby serve then it works fine. But while using Apache, it behaves differently and we found that this problem has been faced by lots of people over the internet.

So what we came up with is, we used gatsby serve with an apache proxy. Here is how we did it,

Step 1 - Setup Project

As a first step, clone the project on the server and run a command, gatsby build to create a gatsby build.

Step 2 - Setup PM2 for Gatsby Serve

The next step that we need to do is run gatsby serve. But as you know, we can not run this command directly via console, because as you exit from the console, the command will be terminated.

So we will be using pm2 package, a NodeJS utility that is used to run nodejs apps.

For that, we will need to install pm2 globally. Run the following command to install it,

npm install pm2 -g

You can find other installation ways here if you need.

Once the installation has been done, let's run the gatsby serve command via pm2. For that run the following command from the gatsby project folder,

pm2 start gatsby --name my-web-app -- serve

where my-web-app you can replace with the name of your app.

Once, it's running, try to test it, if it's working correctly by opening the URL http://your-ip-address:9000/. Make sure, port 9000 is opened on your server for traffic.

Step 3 - Configure Apache

Once, gatsby serve is working and tested. The next step is to configure apache to proxy all port 80 traffic to port 9000.

For that, edit your apache conf file (or virtual host conf file), and add the following lines (or configure it to something like the following),

<VirtualHost *:80>
        ServerName my-web-app.infyom.com

        ServerAdmin webmaster@infyom.com

        ProxyRequests On
        ProxyPass / http://localhost:9000/
        ProxyPassReverse / http://localhost:9000/

        ErrorLog ${APACHE_LOG_DIR}/my-web-app.infyom.com.error.log
        CustomLog ${APACHE_LOG_DIR}/my-web-app.log combined

        ......
        # any other options below as per your need
        ......
</VirtualHost>

The next step you need to do is restart your apache server by,

sudo service apache2 restart

And then you can just open the URL https://my-web-app.infyom.com and it should work fine.

Bonus

New Deployment

Whenever you deploy a new code, you again need to run gatsby build and then pm2 restart my-web-app. Then only it will take new changes.

Troubleshooting

Sometimes, we found that we need to restart apache as well after the new deployment. so if you run into any trouble, then make sure to restart apache as well and it should solve the problem.

I hope it may help you to resolve your 404 problem.

Today we are going to see how we can image based on resolution. We have the most common issue of loading big images in small devices take time. So, the basic solution is to use the picture element to load a different image in different devices and resolutions.

The <picture> element will be for the art direction of responsive design.

The element contains two tags.

• <source>
• <img>

So, the browser will look for the first <source> element where the media query matches the current width, and then it will display the image. The <picture> element is required as the last child of the <picture> element.

Let me show you an example of how to display a different image in different widths.

Here is a Code example,

<picture>
    <source media="(min-width:900px)" srcset="infyom_logo_lg.jpg">
    <source media="(min-width:700px)" srcset="infyom_logo_md.jpg">
    <source media="(min-width:500px)" srcset="infyom_logo_sm.jpg">
    <img src="infyom_logo_xl.jpg" alt="Flowers" style="width:auto;">
</picture>

Recently, I've started working on one project where we need to set up a virtual host with HTTPS because I need to run that project with expose and Shopify in my local development machine. I've wamp 3.2.3 on my local machine.

I spent a lot of time setting it. so, I thought I should write one article for a step by step guide. So, I will show you in this article how to set up HTTPS for a local machine.

Step 1 - Install Wamp

Install wamp server if not installed in your local machine. you can download the latest version of the wamp server from here. wamp server is available in 32 bit and 64 bit. make sure you select the correct version of the wamp server based on your operating system (window)'s version.

Step 2 - Install OpenSSL

OpenSSL is an open-source command-line tool that is used to generate the SSL certificate and private key. OpenSSL is available in both versions 32 and 64 bit. download the latest version of OpenSSL from here.

I hope you successfully installed OpenSSL on your machine. let's take the next step

Step 3 - Create a Private key

Open your terminal as an Administrator otherwise you will get a permission denied error. Also, you can provide permission to the OpenSSL directory and run the terminal in normal mode.

Now, let go to where we installed OpenSSL

cd C:\Program Files\OpenSSL-Win64\bin

Let's create a private key which is 2048 bits encryption. fire one by one the following two commands to create it.

openssl genrsa -aes256 -out private.key 2048

openssl rsa -in private.key -out private.key

Your private.key is successfully generated here C:\Program Files\OpenSSL-Win64\bin

Step 4 - Create an SSL Certificate

Let's create a certificate using the following command,

openssl req -new -x509 -nodes -sha1 -key private.key -out certificate.crt -days 36500

You need to enter a detail that looks like

You can verify here

Step 5 - Move both Private Key and a Certificate

Open a directory D:\wamp64\bin\apache\apache2.4.46\conf (Based on where your wamp is installed) and create a key directory.

Now, move both files to the key directory.

Step 6 - Configure Your httpd.conf File

Open your D:\wamp64\bin\apache\apache2.4.46\conf\httpd.conf (the drive should be where your wamp is installed) and un-comment the following 3 lines one by one.

LoadModule ssl_module modules/mod_ssl.so
Include conf/extra/httpd-ssl.conf
LoadModule socache_shmcb_module modules/mod_socache_shmcb.so

Step 7 Configure Your httpd-ssl.conf File

Open your D:\wamp64\bin\apache\apache2.4.46\conf\extra\httpd-ssl.conf (the drive should be where your wamp is installed) and change the following lines.

DocumentRoot "${INSTALL_DIR}/www"
ServerName localhost:443
ServerAdmin admin@example.com
SSLCertificateKeyFile "${SRVROOT}/conf/key/private.key"
SSLCertificateFile "${SRVROOT}/conf/key/certificate.crt"

Make sure, these following all lines are set or not. if not, add it as well.

SSLSessionCache "shmcb:${SRVROOT}/logs/ssl_scache(512000)"
CustomLog "${SRVROOT}/logs/ssl_request.log" \
          "%t %h %{SSL_PROTOCOL}x %{SSL_CIPHER}x \"%r\" %b"

Step 8 Configure a Virtual Host

Hope you have created a virtual host. if not, create a virtual host using the virtual host manager which is provided by wamp.

Open an D:\wamp64\bin\apache\apache2.4.46\conf\extra\httpd-vhosts.conf and update your virtual host

Change the port :80 to :443

add the following lines into the VirtualHost.

SSLEngine on
SSLCertificateFile "${SRVROOT}/conf/key/certificate.crt"
SSLCertificateKeyFile "${SRVROOT}/conf/key/private.key"

Now, the code of VirtualHost looks like,

Now, we are done. Let's restart a wamp server.

If you see a green WAMP icon everything should be right. If the icon is orange there is a problem with your syntax somewhere.

Open terminal and go to the D:\wamp64\bin\apache\apache2.4.46\bin and run httpd -t in the command prompt and if there are any syntax errors they will be listed.

if fine then open https://ladumor.test on the browser

While developing complex applications, sometimes we have to validate fields and data in a totally customized way, at that time you can use laravel's custom validations rules functionality.

In this tutorial, we are going to create our own custom validation rule to compare UUID. In our case, I have to check the UUID which is actually a binary string, whether it exists on DB or not.

Laravel doesn't provide any rule to compare that binary UUID string, so we will create our own validation rule.

So let's create our custom validation rule::

Generate Custom Validation Class

So here we have created a new class named UuidExists into App\Rules

namespace App\Rules;
use Illuminate\Contracts\Validation\Rule;
use Ramsey\Uuid\Uuid;
class UuidExists implements Rule
{

    protected $table;
    protected $column;

    public function __construct($table, $column)
    {
        $this->table = $table;
        $this->column = $column;
    }
    public function passes($attribute, $value)
    {
        $value = Uuid::fromString(strtolower($value))->getBytes();
        return \DB::table($this->table)->where($this->column, $value)->exists();
    }
    public function message()
    {
        return 'The validation error message.';
    }
}

Add Rule to AppServiceProvider

Add your rule to AppServiceProvider.php into boot() method. here I have to give the name uuid_exists to my custom rule. you can give your own name whatever you want.

\Validator::extend('uuid_exists', function ($attribute, $value, $parameters, $validator) {
    list($table, $column) = $parameters;
    return (new UuidExists($table, $column))->passes($attribute, $value);
});

How to use custom rules?

You can use your custom rule as follows. Here we have using the required and uuid_exists rule, where we are passing attributes and values to our custom rule, which will be used to passes($attribute, $value) function.

'tenant_id' => ['required', 'uuid_exists:tenant_id,uuid']

Keep connected to us for more interesting posts about Laravel.

GIF logo file formats are not as widely used as they once were. They have a very limited color spectrum (only 256 colors out of millions in JPG) so solid color logos are a good candidate for this format. A special feature of the GIF file is that it supports smooth animation. You can create frames with frame animations and file sizes will be negligible as long as you keep the color flat and smooth (from red to blue). GIF files are pixel-based and do not expand well.

EPS and AI logo file formats are a sacred grail of file formats. They are made up of dots and lines, not pixels, allowing infinite scaling and expansion without losing quality. Many business owners and executives ignore these logo file formats because they cannot open them normally. Many common MS Office fee programs do not open the EPS logo file format. EPS files can also support pixels, which also makes this file format difficult. Software such as Adobe Illustrator, InDesign, or Photoshop can work with this file format and optimize and save almost any logo file format you need. Illustrator will allow resizing, color mode change, and more.

PDF logo file formats can also be difficult as PDF color mode can disguise spectra and resolution. Some common office fee software will open or import PDFs but one way to tell if the resolution is good is to zoom in very closely to the logo. If the edges stay crisp, you’re in business and a graphic designer who can use something in print and digital applications. If the edges become blurred or pixelated, you will be limited in the use and extension of this particular logo file format.

SVG files have become more common on websites and digital access and are considered the standard format for displaying vector graphics on the web. SVG logo file formats allow a resizable logo format that does not lose image quality as it is expanded or reduced. This is especially important with responsive web design where the logo file can be resized depending on the digital device the website is viewing. Another major advantage for the SVG logo file format is the relatively small file size - which allows a digital file to load on a website very quickly. Support is limited to SVG but website design is an important place for their use.

Many successful small business owners are constantly looking to expand their customer base and grow their businesses. However, business growth can be a difficult and long-term process. One of the key elements of growing a business is constant access to a steady stream of sales leads. A lead is a person or business if you have a company that sells to other businesses that are interested in the products or services you sell.

Here are some tips for building a system that will help you identify sales leads in your small business, and - with the right focus and effort - turn them into customers.

1. Increase your engagement with your customers

Relationships are all about sales and talking to the people who reach out to you to do so. For example, when people reach you with questions about your product or company, instead of just mentioning them on your blog, you can ask them if they mind having a quick chat with you.

2. Constantly refresh your email lists

It is impossible to generate leads from an old email list that contains incorrect information or does not match the parameters of your target person. If you haven't cleaned up your email list for a while, you may still be cold-emailed people who are already your customers.

3. Use chatbots on your website

Customers want to do business with companies that respond promptly to questions. Although companies respond within 12 hours on average, research shows that consumers expect responses within 1 hour. You might think, "Well, but they know we're not working right now," or, "They'll surely understand that we're in another realm of time." While customers can understand and understand later, there are thousands of businesses offering services just like yours, so you don't want to take that opportunity.

4. Join and participate in social media groups

LinkedIn and Facebook are great places to connect with other professionals, share your skills, and find leads. Once you join a group, don't start by pitching members as this can cause people to separate. Instead, do the following to establish a relationship:

• Start a conversation
• Engage in other people's conversations
• People appreciated their content and the events they were planning to organize

Once the group members recognize you, you can use the platform to generate interest in your products.

5. Use SEO to increase website traffic

High ranking your website in search results will increase your website traffic. To get a better rank, you must do search engine optimization on your website. Some of the basics of SEO include:

• Keyword optimization on both landing pages and blog content
• Constantly great content post
• Link building

Again, it is important to point out that SEO and content creation can be technical and time-consuming.

6. Create a sales funnel

Once you know who you are targeting and decide how to reach them, you need to have a plan to collect contact information. The first part of the process involves funneling all prospects into a standard form or landing page that encourages them to share their contact information, usually in exchange for a free gift, coupon, sample, or any other value-added incentive.

7. Use an email newsletter to build relationships

Now that you’re in touch with prospects, it’s time to cultivate those relationships so you can take them from the lead stage through sales (and ultimately repeat sales). One of the best ways to keep in touch with your prospects is through an email newsletter.

Basically, it works like a stack where each view is stacked on top of the other.

Create a drawable file for shadow view and assign the name image_shadow and add the below code in this file.

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners android:radius="10dp" />
    <gradient
    android:angle="270"
    android:centerX="300%"
    android:endColor="#99000000"
    android:startColor="#00000000"
    android:type="linear" />
    <size
    android:width="270dp"
    android:height="60dp" />
    <stroke
    android:width="1dp"
    android:color="#878787" />
</shape>

Now, open the XML file and add the below code into it, and set this drawable file as view background.

<androidx.appcompat.widget.LinearLayoutCompat
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context=".MainActivity">
<androidx.constraintlayout.widget.ConstraintLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <androidx.appcompat.widget.AppCompatImageView
        android:id="@+id/imageView"
        android:layout_width="250dp"
        android:layout_height="250dp"
        android:scaleType="centerCrop"
        android:src="@drawable/shopping_image"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>
    <View android:id="@+id/view"
        android:layout_width="250dp"
        android:layout_height="250dp"
        android:background="@drawable/image_shadow"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>
    <androidx.appcompat.widget.AppCompatTextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:textColor="@android:color/white"
        android:text="Write your text here"
        android:textSize="25sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintBottom_toBottomOf="@+id/view"/>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.appcompat.widget.LinearLayoutCompat>

That's it. You should be ready to go.