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@pavelsr
Created April 12, 2020 23:46
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Yancy submit form using jquery.post - bypass of CSRF token validation failed
#!/usr/bin/env perl
# Demo of 'CSRF token validation failed' error bypass using jquery.post and serialize form data as JSON
use Mojolicious::Lite;
use Mojo::SQLite;
helper sqlite => sub {
state $path = app->home->child( 'data.db' );
state $sqlite = Mojo::SQLite->new( 'sqlite:' . $path );
return $sqlite;
};
app->sqlite->auto_migrate(1)->migrations->from_data;
plugin Yancy => {
backend => { Sqlite => app->sqlite },
read_schema => 1
};
get '/' => sub {
my ( $c ) = @_;
$c->render( template => 'index');
};
app->routes->post( '/cu' )->to( 'yancy#set', schema => 'users' );
app->routes->get( '/lu' )->to( 'yancy#list', schema => 'users' );
app->start;
__DATA__
@@ migrations
-- 1 up
CREATE TABLE users (
id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
email VARCHAR UNIQUE,
is_admin BOOLEAN DEFAULT FALSE,
password VARCHAR
);
@@ index.html.ep
% layout 'default';
% title 'Demo of issue #95';
%= app->yancy->form->form_for( 'users', properties => [ qw/email password/ ], action => '/cu' )
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" crossorigin="anonymous"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery.serializeJSON/2.9.0/jquery.serializejson.min.js" crossorigin="anonymous"></script>
<script type="text/javascript">
setTimeout(function () {
$(document).ready(function() {
$( "form" ).submit(function(e){
e.preventDefault();
$.post( "/cu", $('form').serializeJSON(), function( response ) {
console.log( response );
}, "json");
});
});
}, 0);
</script>
@@ layouts/default.html.ep
<!DOCTYPE html>
<html>
<head><title><%= title %></title></head>
<body><%= content %></body>
</html>
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