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[feature/request-class] Extracted type casting helpers from the request class.
These methods should be available without having to instantiate a request class object, better separation of concerns. A set_var wrapper around this class no longer requires a request object at all. PHPBB3-9716
This commit is contained in:
Nils Adermann
178
phpBB/includes/request/type_cast_helper.php
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178
phpBB/includes/request/type_cast_helper.php
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@@ -0,0 +1,178 @@
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<?php
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/**
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*
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* @package phpbb_request
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* @copyright (c) 2010 phpBB Group
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License
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*
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*/
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/**
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* @ignore
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*/
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if (!defined('IN_PHPBB'))
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{
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exit;
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}
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/**
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* A helper class that provides convenience methods for type casting.
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*
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* @package phpbb_request
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*/
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class phpbb_type_cast_helper implements phpbb_type_cast_helper_interface
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{
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/**
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* @var string Whether slashes need to be stripped from input
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*/
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protected $strip;
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/**
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* Initialises the type cast helper class.
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* All it does is find out whether magic quotes are turned on.
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*/
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public function __construct()
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{
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if (version_compare(PHP_VERSION, '6.0.0-dev', '>='))
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{
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$this->strip = false;
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}
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else
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{
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$this->strip = (@get_magic_quotes_gpc()) ? true : false;
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}
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}
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/**
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* Recursively applies addslashes to a variable.
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*
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* @param mixed &$var Variable passed by reference to which slashes will be added.
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*/
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public function addslashes_recursively(&$var)
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{
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if (is_string($var))
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{
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$var = addslashes($var);
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}
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else if (is_array($var))
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{
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$var_copy = $var;
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$var = array();
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foreach ($var_copy as $key => $value)
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{
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if (is_string($key))
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{
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$key = addslashes($key);
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}
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$var[$key] = $value;
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$this->addslashes_recursively($var[$key]);
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}
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}
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}
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/**
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* Recursively applies addslashes to a variable if magic quotes are turned on.
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*
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* @param mixed &$var Variable passed by reference to which slashes will be added.
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*/
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public function add_magic_quotes(&$var)
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{
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if ($this->strip)
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{
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$this->addslashes_recursively($var);
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}
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}
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/**
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* Set variable $result to a particular type.
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*
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* @param mixed &$result The variable to fill
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* @param mixed $var The contents to fill with
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* @param mixed $type The variable type. Will be used with {@link settype()}
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* @param bool $multibyte Indicates whether string values may contain UTF-8 characters.
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* Default is false, causing all bytes outside the ASCII range (0-127) to be replaced with question marks.
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*/
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public function set_var(&$result, $var, $type, $multibyte = false)
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{
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settype($var, $type);
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$result = $var;
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if ($type == 'string')
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{
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$result = trim(htmlspecialchars(str_replace(array("\r\n", "\r", "\0"), array("\n", "\n", ''), $result), ENT_COMPAT, 'UTF-8'));
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if (!empty($result))
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{
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// Make sure multibyte characters are wellformed
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if ($multibyte)
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{
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if (!preg_match('/^./u', $result))
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{
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$result = '';
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}
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}
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else
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{
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// no multibyte, allow only ASCII (0-127)
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$result = preg_replace('/[\x80-\xFF]/', '?', $result);
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}
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}
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$result = ($this->strip) ? stripslashes($result) : $result;
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}
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}
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/**
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* Recursively sets a variable to a given type using {@link set_var set_var}
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*
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* @param string $var The value which shall be sanitised (passed by reference).
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* @param mixed $default Specifies the type $var shall have.
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* If it is an array and $var is not one, then an empty array is returned.
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* Otherwise var is cast to the same type, and if $default is an array all
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* keys and values are cast recursively using this function too.
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* @param bool $multibyte Indicates whether string keys and values may contain UTF-8 characters.
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* Default is false, causing all bytes outside the ASCII range (0-127) to
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* be replaced with question marks.
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*/
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public function recursive_set_var(&$var, $default, $multibyte)
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{
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if (is_array($var) !== is_array($default))
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{
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$var = (is_array($default)) ? array() : $default;
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return;
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}
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if (!is_array($default))
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{
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$type = gettype($default);
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$this->set_var($var, $var, $type, $multibyte);
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}
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else
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{
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// make sure there is at least one key/value pair to use get the
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// types from
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if (empty($default))
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{
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$var = array();
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return;
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}
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list($default_key, $default_value) = each($default);
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$value_type = gettype($default_value);
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$key_type = gettype($default_key);
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$_var = $var;
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$var = array();
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foreach ($_var as $k => $v)
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{
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$this->set_var($k, $k, $key_type, $multibyte, $multibyte);
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$this->recursive_set_var($v, $default_value, $multibyte);
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$this->set_var($var[$k], $v, $value_type, $multibyte);
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}
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}
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}
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}
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63
phpBB/includes/request/type_cast_helper_interface.php
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63
phpBB/includes/request/type_cast_helper_interface.php
Normal file
@@ -0,0 +1,63 @@
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<?php
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/**
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*
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* @package phpbb_request
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* @copyright (c) 2010 phpBB Group
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License
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*
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*/
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/**
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* @ignore
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*/
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if (!defined('IN_PHPBB'))
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{
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exit;
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}
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/**
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* An interface for type cast operations.
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*
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* @package phpbb_request
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*/
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interface phpbb_type_cast_helper_interface
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{
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/**
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* Recursively applies addslashes to a variable.
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*
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* @param mixed &$var Variable passed by reference to which slashes will be added.
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*/
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public function addslashes_recursively(&$var);
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/**
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* Recursively applies addslashes to a variable if magic quotes are turned on.
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*
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* @param mixed &$var Variable passed by reference to which slashes will be added.
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*/
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public function add_magic_quotes(&$var);
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/**
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* Set variable $result to a particular type.
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*
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* @param mixed &$result The variable to fill
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* @param mixed $var The contents to fill with
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* @param mixed $type The variable type. Will be used with {@link settype()}
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* @param bool $multibyte Indicates whether string values may contain UTF-8 characters.
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* Default is false, causing all bytes outside the ASCII range (0-127) to be replaced with question marks.
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*/
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public function set_var(&$result, $var, $type, $multibyte = false);
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/**
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* Recursively sets a variable to a given type using {@link set_var set_var}.
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*
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* @param string $var The value which shall be sanitised (passed by reference).
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* @param mixed $default Specifies the type $var shall have.
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* If it is an array and $var is not one, then an empty array is returned.
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* Otherwise var is cast to the same type, and if $default is an array all
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* keys and values are cast recursively using this function too.
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* @param bool $multibyte Indicates whether string keys and values may contain UTF-8 characters.
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* Default is false, causing all bytes outside the ASCII range (0-127) to
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* be replaced with question marks.
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*/
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public function recursive_set_var(&$var, $default, $multibyte);
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}
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