Laravel CSRF protection exception now working - php

My Laravel project is in this link
http://localhost/demo/public // laravel project
and I have this external HTML form
http://localhost/attendance
Now I want to send data from the form to Laravel
but I got this error
419
Page Expired
so in my laravel project VerifyCsrfToken Class I wrote this
class VerifyCsrfToken extends Middleware
{
/**
* The URIs that should be excluded from CSRF verification.
*
* #var array
*/
protected $except = [
'http://localhost/attendance'
];
}
but still, got the same error
419 Page Expired

Laravel resolve for you the baseUrl of your application, there is no need to put the full path, in your case the Middleware should be like below:
class VerifyCsrfToken extends Middleware
{
/**
* The URIs that should be excluded from CSRF verification.
*
* #var array
*/
protected $except = [
'attendance/*'
];
}

One solution would be to send the data as a GET request instead of a POST one.
Once you put your work online, you would face cross-site protection on the browser.
The URI to be excluded is the one receiving the request so http://localhost/demo/public

Related

How to add VerifyCsrfToken exception for api in Laravel?

I want to implement socket with Echo in laravel. I have an API beside my main laravel project. In my laravel project all events are triggered and sockets working correctly. But in API it doesn't work and it returns 419 error. Client can not be authenticated, got HTTP status 419. I figured out that it needs CSRF token however in API we don't have it. By the way when I comment \App\Http\Middleware\VerifyCsrfToken::class in App\Http\Kernel.php it works!
How can I add it to an exception that if an user sending request to API not to verify its CSRF token?
Btw, you can put URIs that you want to make as exception inside this file app/Http/Middleware/VerifyCsrfToken.php at following line:
/**
* The URIs that should be excluded from CSRF verification.
*
* #var array
*/
protected $except = [
//
];
Those URIs under $except property will be ignore

Instamojo Payment Integration - Webhook Issue

The response from the instamojo api is successfully extracted but the issue is that, the webhook service is not working. In this I've provided a webhook url in request and i want to exclude the CSRF verification, for that I've included Except array with 'instamojo/*' in middleware but still no use.
class VerifyCsrfToken extends Middleware
{
/**
* The URIs that should be excluded from CSRF verification.
*
* #var array
*/
protected $except = [
'instamojo/*',
];
}
The current Route
Route::post('webhook','HomeController#webhook');
It can be solved by adding the posting route name in middleware's Except section.
Here I added webhook/* in my middleware.
Route
Route::post('webhook','HomeController#webhook');
Middleware
class VerifyCsrfToken extends Middleware
{
/**
* The URIs that should be excluded from CSRF verification.
*
* #var array
*/
protected $except = [
'webhook/*',
];
}
It work's fine.Thank you.

How to handle post request in Laravel app from another app?

I expect in Laravel 5.2 app post request from other system, when I handle it I receive:
TokenMismatchException in VerifyCsrfToken.php line 67:
Normally when I send post form I add in code {{ csrf_field() }}, but in this case request is from different app. So how to handle it without error?
You can add the URIs that should be excluded from verification to the $except property in the VerifyCsrfToken middleware.
<?php
namespace App\Http\Middleware;
use Illuminate\Foundation\Http\Middleware\VerifyCsrfToken as BaseVerifier;
class VerifyCsrfToken extends BaseVerifier
{
/**
* The URIs that should be excluded from CSRF verification.
*
* #var array
*/
protected $except = [
'api/*',
];
}
Documentation
You can exclude URI, to which reuqest from another application is send, from CSRF protection. This is described in doc here

How to have csrf token from mobile in Laravel Application

I am building a cordova application,
In the Login Authentication
From Web, I am sending the _token , email & password.
But From Mobile, I can't generate _token as it is basically a .html file.
I planned to do a request in the form document.ready to a controller which will generate _csrf token. So that i can use that token for that request.
But it can be watched from browser's Network Tab.
How can set the csrf _token to the form without others knowledge (safe way).
Or How it can be deal without any vulnerabilities
to disable csrf token for a specific url follow this.
First go to app/Http/Middleware/VerifyCsrfToken.php then use your url to avoid csrf token
protected $except = [
'my/url',
];
You can disable CSRF token checking in your laravel application for all routes. just open app/Http/Middleware/VerifyCsrfToken.php file and add '*' in $except array
Eg.
protected $except = [
'*'
];
my VerifyCsrfToken.php file
<?php
namespace App\Http\Middleware;
use Illuminate\Foundation\Http\Middleware\VerifyCsrfToken as BaseVerifier;
class VerifyCsrfToken extends BaseVerifier
{
/**
* The URIs that should be excluded from CSRF verification.
*
* #var array
*/
protected $except = [
'*'
];
}

Converting beforeFilter (4.*) to Middleware (5.*) in Laravel

Recently I've been trying to learn to work with Laravel. Most tutorials are in 4.*, but that's okay. Implementing/converting some deprectated functions are going fine until now. I found out that version 5.* has deprecated the beforeFilter as in:
public function __construct() {
$this->beforeFilter('csrf', array('on' => ['post', 'put', 'patch', 'delete']));
}
I want to convert this to version 5.*. From what I understand this can be done with Middleware, but I have no idea how I can achieve the same result. I have read the docs, but this didn't really help me understand the topic.
There already is a middleware file called VerifyCsrfToken.php in the app/Http/Middleware folder with this code:
namespace App\Http\Middleware;
use Illuminate\Foundation\Http\Middleware\VerifyCsrfToken as BaseVerifier;
class VerifyCsrfToken extends BaseVerifier
{
/**
* The URIs that should be excluded from CSRF verification.
*
* #var array
*/
protected $except = [
//
];
}
Can anyone guide me to set this up and help me understand Middleware a bit better? Thank you.
Because CSRF protection is something that Laravel 5 comes bundled with, this is actually something it checks by default within the Illuminate\Foundation\Http\Middleware\VerifyCsrfToken class that you see being extended in VerifyCsrfToken.php.
If you have a look in the handle method of that class, you'll see that the first condition that would make the verification successful, calls the isReading method which looks like this:
/**
* Determine if the HTTP request uses a ‘read’ verb.
*
* #param \Illuminate\Http\Request $request
* #return bool
*/
protected function isReading($request)
{
return in_array($request->method(), ['HEAD', 'GET', 'OPTIONS']);
}
This does the equivalent of what your beforeFilter did in Laravel 4, thus allowing the request to execute for "read" verbs and automatically verifying the token if any other verbs are used, such as post, put, patch, delete.
If you check the Laravel CSRF Protection Documentation you'll see there's one paragraph that reads:
You do not need to manually verify the CSRF token on POST, PUT, or DELETE requests. The VerifyCsrfToken HTTP middleware will verify that the token in the request input matches the token stored in the session.
So there's no more need for you to have that filter. As for understanding how Middleware works in Laravel, reading the entire HTTP Middleware Documentation will do a great job of helping you figure out how it works.

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