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<?php |
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/* |
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* Ntentan Framework |
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* Copyright (c) 2008-2015 James Ekow Abaka Ainooson |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining |
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* a copy of this software and associated documentation files (the |
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* "Software"), to deal in the Software without restriction, including |
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* without limitation the rights to use, copy, modify, merge, publish, |
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* distribute, sublicense, and/or sell copies of the Software, and to |
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* permit persons to whom the Software is furnished to do so, subject to |
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* the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be |
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* included in all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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* |
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*/ |
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namespace ntentan\utils; |
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/** |
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* An input filter class which is wraped around PHP's `filter_input` and |
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* `filter_input_array` classes. This class provides methods which allow safe |
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* and secure access to data passed to an application. |
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* |
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* @author James Ainooson |
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*/ |
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class Input |
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{ |
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/** |
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* Constant for POST request. |
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*/ |
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const POST = INPUT_POST; |
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/** |
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* Constant for GET request. |
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*/ |
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const GET = INPUT_GET; |
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//const REQUEST = INPUT_REQUEST; |
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const REQUEST_DECODER_INTERNAL = "Input::decodeInternal"; |
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const REQUEST_DECODER_PHP = "Input::decodePhp"; |
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private static $decoder = self::REQUEST_DECODER_PHP; |
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/** |
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* Cache or arrays which hold decoded query strings. |
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* |
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* @var array |
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*/ |
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private static $arrays = []; |
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/** |
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* Does the actual work of calling either the filter_input of |
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* filter_input_array. Calls the filter_input when a data key is provided |
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* and callse the filte_input_array when a data key is absent. |
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* |
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* @param string $input Input type |
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* @param string $key The data key |
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* @return string|array The value. |
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*/ |
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private static function getVariable(int $input, string $key = null): string | array | null |
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{ |
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if ($key === null) { |
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if (!isset(self::$arrays[$input])) { |
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self::$arrays[$input] = filter_input_array($input);// ?? []; |
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} |
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$return = self::$arrays[$input]; |
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} else { |
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$return = filter_input($input, $key); // ?? ""; |
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} |
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if ($return === null && $key === null) { |
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$return = array(); |
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} |
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return $return; |
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} |
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/** |
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* Retrieves GET request variables. |
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* |
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* @param string $key |
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* @return string|array |
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*/ |
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public static function get(string $key = null) |
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{ |
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return self::getVariable(INPUT_GET, $key); |
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} |
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/** |
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* Retrieves post request variables. |
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* |
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* @param string $key |
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* @return string|array |
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*/ |
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public static function post(string $key = null) |
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{ |
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return self::getVariable(INPUT_POST, $key); |
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} |
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/** |
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* Retrieves cookie variables. |
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* |
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* @param string $key |
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* @return string|array |
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*/ |
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public static function cookie(string $key = null) |
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{ |
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return self::getVariable(INPUT_COOKIE, $key); |
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} |
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/** |
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* Checks if a particular key exists in a given request query. |
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* |
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* @param string $input |
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* @param string $key |
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* @return bool |
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*/ |
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public static function exists(string $input, string $key): bool |
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{ |
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return isset(self::getVariable($input, null)[$key]); |
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} |
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/** |
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* Retrieves uploaded files as instances of UploadedFile or an array of UploadedFile if multiples exist. |
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* |
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* @param string $key |
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* @return array|filesystem\UploadedFile|null |
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*/ |
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public static function files(string $key = null) |
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{ |
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if (!isset($_FILES[$key])) { |
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return null; |
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} |
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if (is_array($_FILES[$key]['name'])) { |
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return self::getFileObjects($key); |
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} else { |
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return new filesystem\UploadedFile($_FILES); |
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} |
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} |
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private static function getFileObjects($key) |
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{ |
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$files = []; |
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$numFiles = count($_FILES[$key]['name']); |
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for ($i = 0; $i < $numFiles; $i++) { |
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$files[] = new filesystem\UploadedFile([ |
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'name' => $_FILES[$key]['name'][$i], |
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'type' => $_FILES[$key]['type'][$i], |
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'tmp_name' => $_FILES[$key]['tmp_name'][$i], |
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'error' => $_FILES[$key]['error'][$i], |
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'size' => $_FILES[$key]['size'][$i], |
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]); |
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} |
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return $files; |
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} |
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} |
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