
In one of my previous
post I have shown how we can use both secure and non-secure URLs. Now I am going to show how we can do this, extending native libraries.
What we are going to do…
We will create secure version of some functions. For this we will create a helper file ‘my_url_helper.php’ and save it in ‘system/application/helpers’. We will be creating secure version of following functions:
- site_url()
- base_url()
- anchor()
- redirect()
Lets’ start…
First we will add the following config element in the config file:
$config['secure_base_url'] = 'https://example.com'; |
$config['secure_base_url'] = 'https://example.com';
Then, open the my_url_helper.php file (system/application/helpers/my_url_helper.php) and add the following codes.
if( ! function_exists('secure_site_url') )
{
function secure_site_url($uri = '')
{
$CI =& get_instance();
return $CI->config->secure_site_url($uri);
}
}
if( ! function_exists('secure_base_url') )
{
function secure_base_url()
{
$CI =& get_instance();
return $CI->config->slash_item('secure_base_url');
}
}
if ( ! function_exists('secure_anchor'))
{
function secure_anchor($uri = '', $title = '', $attributes = '')
{
$title = (string) $title;
if ( ! is_array($uri))
{
$secure_site_url = ( ! preg_match('!^\w+://! i', $uri)) ? secure_site_url($uri) : $uri;
}
else
{
$secure_site_url = secure_site_url($uri);
}
if ($title == '')
{
$title = $secure_site_url;
}
if ($attributes != '')
{
$attributes = _parse_attributes($attributes);
}
return '<a href="'.$secure_site_url.'" ' . $attributes . '>'.$title.'</a>';
}
}
if ( ! function_exists('secure_redirect'))
{
function secure_redirect($uri = '', $method = 'location', $http_response_code = 302)
{
switch($method)
{
case 'refresh' : header("Refresh:0;url=".secure_site_url($uri));
break;
default : header("Location: ".secure_site_url($uri), TRUE, $http_response_code);
break;
}
exit;
}
} |
if( ! function_exists('secure_site_url') )
{
function secure_site_url($uri = '')
{
$CI =& get_instance();
return $CI->config->secure_site_url($uri);
}
}
if( ! function_exists('secure_base_url') )
{
function secure_base_url()
{
$CI =& get_instance();
return $CI->config->slash_item('secure_base_url');
}
}
if ( ! function_exists('secure_anchor'))
{
function secure_anchor($uri = '', $title = '', $attributes = '')
{
$title = (string) $title;
if ( ! is_array($uri))
{
$secure_site_url = ( ! preg_match('!^\w+://! i', $uri)) ? secure_site_url($uri) : $uri;
}
else
{
$secure_site_url = secure_site_url($uri);
}
if ($title == '')
{
$title = $secure_site_url;
}
if ($attributes != '')
{
$attributes = _parse_attributes($attributes);
}
return '<a href="'.$secure_site_url.'" ' . $attributes . '>'.$title.'</a>';
}
}
if ( ! function_exists('secure_redirect'))
{
function secure_redirect($uri = '', $method = 'location', $http_response_code = 302)
{
switch($method)
{
case 'refresh' : header("Refresh:0;url=".secure_site_url($uri));
break;
default : header("Location: ".secure_site_url($uri), TRUE, $http_response_code);
break;
}
exit;
}
}
Now, I will extend the Config library (system/libraries/Config.php). I assume that the sub class prefix is set as ‘MY_’ in config file (system/application/config/config.php). Create a file ‘MY_Config.php’ in ‘system/application/libraries’ folder and save the file with following code.
class MY_Config extends CI_Config
{
function MY_Config()
{
parent::CI_Config();
}
function secure_site_url($uri = '')
{
if (is_array($uri))
{
$uri = implode('/', $uri);
}
if ($uri == '')
{
return $this->slash_item('secure_base_url').$this->item('index_page');
}
else
{
$suffix = ($this->item('url_suffix') == FALSE) ? '' : $this->item('url_suffix');
return $this->slash_item('secure_base_url').$this->slash_item('index_page').preg_replace("|^/*(.+?)/*$|", "\\1", $uri).$suffix;
}
}
} |
class MY_Config extends CI_Config
{
function MY_Config()
{
parent::CI_Config();
}
function secure_site_url($uri = '')
{
if (is_array($uri))
{
$uri = implode('/', $uri);
}
if ($uri == '')
{
return $this->slash_item('secure_base_url').$this->item('index_page');
}
else
{
$suffix = ($this->item('url_suffix') == FALSE) ? '' : $this->item('url_suffix');
return $this->slash_item('secure_base_url').$this->slash_item('index_page').preg_replace("|^/*(.+?)/*$|", "\\1", $uri).$suffix;
}
}
}
Now what we have…
Now we have secured versions of those function. You may now use them as their insecured version. Enjoy coding ;).