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[feature/request-class] Add server(), header() and is_ajax() to request

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Extend the request class with helpers for reading server vars (server())
and HTTP request headers (header()). Refactor the existing code base
to make use of these helpers, make $_SERVER a deactivated super global.

Also introduce an is_ajax() method, which checks the X-Requested-With
header for the value 'XMLHttpRequest', which is sent by JavaScript
libraries, such as jQuery.

PHPBB3-9716
This commit is contained in:
Igor Wiedler
2011-07-13 19:20:16 +02:00
parent 09e0460e5b
commit 0bf6966c52
23 changed files with 318 additions and 152 deletions
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61
phpBB/includes/request/request.php
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@@ -32,7 +32,8 @@ class phpbb_request implements phpbb_request_interface
phpbb_request_interface::POST => '_POST',
phpbb_request_interface::GET => '_GET',
phpbb_request_interface::REQUEST => '_REQUEST',
phpbb_request_interface::COOKIE => '_COOKIE'
phpbb_request_interface::COOKIE => '_COOKIE',
phpbb_request_interface::SERVER => '_SERVER',
);
/**
@@ -193,11 +194,12 @@ class phpbb_request implements phpbb_request_interface
* Default is false, causing all bytes outside the ASCII range (0-127) to be replaced with question marks
* @param phpbb_request_interface::POST|GET|REQUEST|COOKIE $super_global
* Specifies which super global should be used
* @param bool $html_encode When true, html encoding will be applied
*
* @return mixed The value of $_REQUEST[$var_name] run through {@link set_var set_var} to ensure that the type is the
* the same as that of $default. If the variable is not set $default is returned.
*/
public function variable($var_name, $default, $multibyte = false, $super_global = phpbb_request_interface::REQUEST)
public function variable($var_name, $default, $multibyte = false, $super_global = phpbb_request_interface::REQUEST, $html_encode = true)
{
$path = false;
@@ -236,11 +238,54 @@ class phpbb_request implements phpbb_request_interface
}
}
$this->type_cast_helper->recursive_set_var($var, $default, $multibyte);
$this->type_cast_helper->recursive_set_var($var, $default, $multibyte, $html_encode);
return $var;
}
/**
* Shortcut method to retrieve SERVER variables.
*
* Also fall back to getenv(), some CGI setups may need it (probably not, but
* whatever).
*
* @param string|array $var_name See phpbb_request_interface::variable
* @param mixed $Default See phpbb_request_interface::variable
* @param bool $html_encode See phpbb_request_interface::variable
*
* @return mixed The server variable value.
*/
public function server($var_name, $default = '', $html_encode = false)
{
$multibyte = true;
if ($this->is_set($var_name, phpbb_request_interface::SERVER))
{
return $this->variable($var_name, $default, $multibyte, phpbb_request_interface::SERVER);
}
else
{
$var = getenv($var_name);
$this->type_cast_helper->recursive_set_var($var, $default, $multibyte);
return $var;
}
}
/**
* Shortcut method to retrieve the value of client HTTP headers.
*
* @param string|array $header_name The name of the header to retrieve.
* @param mixed $default See phpbb_request_interface::variable
* @param bool $html_encode See phpbb_request_interface::variable
*
* @return mixed The header value.
*/
public function header($header_name, $default = '', $html_encode = true)
{
$var_name = 'HTTP_'.str_replace('-', '_', strtoupper($header_name));
return $this->server($var_name, $default, $html_encode);
}
/**
* Checks whether a certain variable was sent via POST.
* To make sure that a request was sent using POST you should call this function
@@ -271,6 +316,16 @@ class phpbb_request implements phpbb_request_interface
return isset($this->input[$super_global][$var]);
}
/**
* Checks whether the current request is an AJAX request (XMLHttpRequest)
*
* @return bool True if the current request is an ajax request
*/
public function is_ajax()
{
return $this->header('X-Requested-With') == 'XMLHttpRequest';
}
/**
* Returns all variable names for a given super global
*