171 lines
4.8 KiB
PHP
171 lines
4.8 KiB
PHP
<?php
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/**
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* Slim - a micro PHP 5 framework
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*
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* @author Josh Lockhart <info@slimframework.com>
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* @copyright 2011 Josh Lockhart
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* @link http://www.slimframework.com
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* @license http://www.slimframework.com/license
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* @version 2.2.0
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* @package Slim
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*
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* MIT LICENSE
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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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namespace Slim\Middleware;
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/**
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* Content Types
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*
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* This is middleware for a Slim application that intercepts
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* the HTTP request body and parses it into the appropriate
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* PHP data structure if possible; else it returns the HTTP
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* request body unchanged. This is particularly useful
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* for preparing the HTTP request body for an XML or JSON API.
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*
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* @package Slim
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* @author Josh Lockhart
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* @since 1.6.0
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*/
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class ContentTypes extends \Slim\Middleware
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{
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/**
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* @var array
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*/
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protected $contentTypes;
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/**
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* Constructor
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* @param array $settings
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*/
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public function __construct($settings = array())
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{
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$this->contentTypes = array_merge(array(
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'application/json' => array($this, 'parseJson'),
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'application/xml' => array($this, 'parseXml'),
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'text/xml' => array($this, 'parseXml'),
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'text/csv' => array($this, 'parseCsv')
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), $settings);
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}
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/**
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* Call
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*/
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public function call()
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{
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$mediaType = $this->app->request()->getMediaType();
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if ($mediaType) {
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$env = $this->app->environment();
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$env['slim.input_original'] = $env['slim.input'];
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$env['slim.input'] = $this->parse($env['slim.input'], $mediaType);
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}
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$this->next->call();
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}
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/**
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* Parse input
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*
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* This method will attempt to parse the request body
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* based on its content type if available.
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*
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* @param string $input
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* @param string $contentType
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* @return mixed
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*/
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protected function parse ($input, $contentType)
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{
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if (isset($this->contentTypes[$contentType]) && is_callable($this->contentTypes[$contentType])) {
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$result = call_user_func($this->contentTypes[$contentType], $input);
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if ($result) {
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return $result;
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}
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}
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return $input;
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}
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/**
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* Parse JSON
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*
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* This method converts the raw JSON input
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* into an associative array.
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*
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* @param string $input
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* @return array|string
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*/
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protected function parseJson($input)
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{
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if (function_exists('json_decode')) {
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$result = json_decode($input, true);
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if ($result) {
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return $result;
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}
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}
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}
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/**
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* Parse XML
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*
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* This method creates a SimpleXMLElement
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* based upon the XML input. If the SimpleXML
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* extension is not available, the raw input
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* will be returned unchanged.
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*
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* @param string $input
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* @return \SimpleXMLElement|string
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*/
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protected function parseXml($input)
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{
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if (class_exists('SimpleXMLElement')) {
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try {
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return new \SimpleXMLElement($input);
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} catch (\Exception $e) {
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// Do nothing
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}
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}
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return $input;
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}
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/**
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* Parse CSV
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*
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* This method parses CSV content into a numeric array
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* containing an array of data for each CSV line.
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*
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* @param string $input
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* @return array
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*/
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protected function parseCsv($input)
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{
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$temp = fopen('php://memory', 'rw');
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fwrite($temp, $input);
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fseek($temp, 0);
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$res = array();
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while (($data = fgetcsv($temp)) !== false) {
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$res[] = $data;
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}
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fclose($temp);
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return $res;
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}
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}
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