I am try to build restful API in codeigniter using Phil Sturgeon's rest server
Problem is I can't figure out how to do token based authentication. I am building that API for mobile app and it is over HTTPS. At first user will authentication by logging in and then he will be able to use app functionalities. I want to implement in the way explained here: How token-based authentication works
Questions:
If I send token to server in request where should I check validity?
Does rest server library support token based authentication?
If it does which configurations do I need to do? or I need to implement my authentication methods?
or there is better/simpler way for authentication instead of token based?
It does not support token auth. Here's the modifications I made to add it. REST_Controller.php search for "switch ($rest_auth) {" add add this case to it:
case 'token':
$this->_check_token();
break;
Then add this function:
/** Check to see if the user is logged in with a token
* @access protected
*/
protected function _check_token () {
if (!empty($this->_args[$this->config->item('rest_token_name')])
&& $row = $this->rest->db->where('token', $this->_args[$this->config->item('rest_token_name')])->get($this->config->item('rest_tokens_table'))->row()) {
$this->api_token = $row;
} else {
$this->response([
$this->config->item('rest_status_field_name') => FALSE,
$this->config->item('rest_message_field_name') => $this->lang->line('text_rest_unauthorized')
], self::HTTP_UNAUTHORIZED);
}
}
config/rest.php
// *** Tokens ***
/* Default table schema:
* CREATE TABLE `api_tokens` (
`api_token_id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`token` VARCHAR(50) NOT NULL,
`created` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`api_token_id`)
)
COLLATE='latin1_swedish_ci'
ENGINE=InnoDB
*/
$config['rest_token_name'] = 'X-Auth-Token';
$config['rest_tokens_table'] = 'api_tokens';
Controller to get the token:
I built a rest controllers to get the token.
require APPPATH . 'libraries/REST_Controller.php';
class Token extends REST_Controller {
/**
* @response array
*/
public function index_get() {
$data = $this->Api_model->create_token($this->api_customer_id);
// ***** Response ******
$http_code = $data['http_code'];
unset($data['http_code']);
$this->response($data, $http_code);
}
}
Function in Model for Token:
/** Creates a new token
* @param type $in
* @return type
*/
function create_token ($customer_id) {
$this->load->database();
// ***** Generate Token *****
$char = "bcdfghjkmnpqrstvzBCDFGHJKLMNPQRSTVWXZaeiouyAEIOUY!@#%";
$token = '';
for ($i = 0; $i < 47; $i++) $token .= $char[(rand() % strlen($char))];
// ***** Insert into Database *****
$sql = "INSERT INTO api_tokens SET `token` = ?, customer_id = ?;";
$this->db->query($sql, [$token, $customer_id];
return array('http_code' => 200, 'token' => $token);
}