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POURL Security in CodeIgniter Application
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2012-01-08T18:37:28.297
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Disclaimer: I'm new to web development. Scenario: I've built an application using CodeIgniter that would be best described as an event calendar. There is a shared feature in the application that allows you to share your event calendar with another individual. When logged in, a user can travel to the shared page, and choose from a list of those who have shared their event calendars with them. Currently, when a user selects the name of the person who has shared their event calendar with them, the following URI is generated: <pre><code>http://example.com/folder/controller/method/id </code></pre> The <code>id</code> section is the the <code>owner_id</code> in the database of the user who has shared their calendar with the individual. Issue: It's easy to go change the <code>id</code> section of the URL to another user's <code>owner_id</code> in the database. This allows whoever does so to access the event calendar of an individual who has not authorized the sharing of their event calendar. Question: What are some methods to resolve this security gap? Please let me know if there is anything else that I need to provide, or explain in a clearer fashion. Thanks in advance for your time and energy. Model: <pre><code>class Shares_model extends crud_model { public function __construct() { parent::__construct(); $this->pk = 'id'; $this->table_name = 'shares'; } public function get($shared_to_user_id) { $this->db->where('shared_to_id', $shared_to_user_id); $ids = parent::get_all(); $users = array(); foreach ($ids as $id) { $users[$id->owner_id]['owner_id'] = $id->owner_id; $users[$id->owner_id]['owner_first_name'] = $id->owner_first_name; $users[$id->owner_id]['owner_last_name'] = $id->owner_last_name; } return $users; } } </code></pre> View: <pre><code><div class="panel"> <h4>Shared Planners</h4> <ol> <?php foreach($sharers as $s): ?> <li><a href="<?php echo base_url('user/shared/view/'.$s['owner_id']) ?>"><?php echo $s['owner_first_name']." ".$s['owner_last_name'] ?></a></li> <?php endforeach; ?> </ol> </div> </code></pre> Controller: <pre><code>class Shared extends Common_Auth_Controller { private $end_user; public function __construct() { parent::__construct(); $this->end_user = $this->ion_auth->user()->row(); $data['end_user'] = $this->end_user; $this->load->vars($data); $this->load->model('events_model', 'events'); } public function index() { $title['title'] = 'Shared'; $this->load->model('shares_model','shares'); $data['sharers'] = $this->shares->get($this->end_user->id); $this->load->view('public/head_view', $title); $this->load->view('user/header_view'); $this->load->view('user/shared_view', $data); $this->load->view('user/footer_view'); } </code></pre>
Tags
<php><database><security><codeigniter>
Title
URL Security in CodeIgniter Application
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1. COwhy have a table of authorizations for your events/calendars...?
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