Codeigniter Domain Masking for Amazon S3 Bucket

Question

In my web app, i'm using Amazon S3 bucket to hold images and i need my codeigniter host to show images from S3 bucket but with my host url.

For example:

mywebapp.com/products/image1.jpg will display content from mywebapp.s3.amazonaws.com/products/image1.jpg

I'm using Codeigniter and i'm not sure if i will handle this problem inside my codeigniter project or from other configurations.

Why not just use the S3 link directly whenever you need it? We'll at least need to know what exactly you want to achieve. — xiankai, Oct 15 '13 at 13:31
I know its not needed but i just thought that this kind of url redirect will seem more professional and also i want my all urls have same origin for a better look. — Yusuf Can Gürkan, Oct 15 '13 at 14:26
Then what you want is not url redirection, it is domain masking. http://en.wikipedia.org/wiki/Domain_Masking — xiankai, Oct 16 '13 at 03:33

score 0 · Answer 1 · answered Oct 15 '13 at 17:19

First load the url helper in your constructor if you haven't done it already:

$this->load->helper('url');

then whenever you need the redirect you can simply call:

$s3_url = "https://mywebapp.s3.amazonaws.com/products/image1.jpg";

// you can omit the last two parameters for the default redirect
redirect($s3_url, 'location', 301);

I guess you want a service where you access the url and get the image, here's my solution

<?php if (!defined('BASEPATH')) die();
class Img extends CI_Controller {

    public function __construct ()
    {
        parent::__construct();

        $this->load->helper('url');

        // this is the db model where you store the image's urls
        $this->load->model('images_model', 'img_m');
    }

    // accessed as example.com/img/<image_id>
    // redirects to the appropiate s3 URL
    public function index()
    {
        // get the second segment (returns false if not set)
        $image_id = $this->uri->segment(2);

        // if there was no image in the url set:
        if ($image_id === false)
        {
            // load an image index view
            $this->load->view('image_index_v');
            exit;
        }

        $url = $this->img_m->get_url($image_id);

        // get_url() should return something like this:
        $url = "https://mywebapp.s3.amazonaws.com/products/image1.jpg";

        // then you simply call:
        redirect($url, 'location', 301);
    }
}

Codeigniter Domain Masking for Amazon S3 Bucket

1 Answers1