226 lines
8.0 KiB
PHP
226 lines
8.0 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 1.6.0
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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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/**
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* Environment
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*
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* This class creates and returns a key/value array of common
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* environment variables for the current HTTP request.
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*
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* This is a singleton class; derived environment variables will
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* be common across multiple Slim applications.
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*
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* This class matches the Rack (Ruby) specification as closely
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* as possible. More information available below.
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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 Slim_Environment implements ArrayAccess, IteratorAggregate {
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/**
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* @var array
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*/
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protected $properties;
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/**
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* @var Slim_Environment
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*/
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protected static $environment;
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/**
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* Get environment instance (singleton)
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*
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* This creates and/or returns an Environment instance (singleton)
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* derived from $_SERVER variables. You may override the global server
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* variables by using `Environment::mock()` instead.
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*
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* @param bool $refresh Refresh properties using global server variables?
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* @return Slim_Environment
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*/
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public static function getInstance( $refresh = false ) {
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if ( is_null(self::$environment) || $refresh ) {
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self::$environment = new self();
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}
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return self::$environment;
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}
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/**
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* Get mock environment instance
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*
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* @param array $userSettings
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* @return Environment
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*/
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public static function mock( $userSettings = array() ) {
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self::$environment = new self(array_merge(array(
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'REQUEST_METHOD' => 'GET',
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'SCRIPT_NAME' => '',
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'PATH_INFO' => '',
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'QUERY_STRING' => '',
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'SERVER_NAME' => 'localhost',
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'SERVER_PORT' => 80,
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'ACCEPT' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
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'ACCEPT_LANGUAGE' => 'en-US,en;q=0.8',
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'ACCEPT_CHARSET' => 'ISO-8859-1,utf-8;q=0.7,*;q=0.3',
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'USER_AGENT' => 'Slim Framework',
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'REMOTE_ADDR' => '127.0.0.1',
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'slim.url_scheme' => 'http',
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'slim.input' => '',
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'slim.errors' => @fopen('php://stderr', 'w')
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), $userSettings));
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return self::$environment;
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}
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/**
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* Constructor (private access)
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*
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* @param array|null $settings If present, these are used instead of global server variables
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* @return void
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*/
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private function __construct( $settings = null ) {
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if ( $settings ) {
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$this->properties = $settings;
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} else {
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$env = array();
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//The HTTP request method
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$env['REQUEST_METHOD'] = $_SERVER['REQUEST_METHOD'];
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//The IP
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$env['REMOTE_ADDR'] = $_SERVER['REMOTE_ADDR'];
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/**
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* Application paths
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*
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* This derives two paths: SCRIPT_NAME and PATH_INFO. The SCRIPT_NAME
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* is the real, physical path to the application, be it in the root
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* directory or a subdirectory of the public document root. The PATH_INFO is the
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* virtual path to the requested resource within the application context.
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*
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* With htaccess, the SCRIPT_NAME will be an absolute path (without file name);
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* if not using htaccess, it will also include the file name. If it is "/",
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* it is set to an empty string (since it cannot have a trailing slash).
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*
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* The PATH_INFO will be an absolute path with a leading slash; this will be
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* used for application routing.
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*/
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if ( strpos($_SERVER['REQUEST_URI'], $_SERVER['SCRIPT_NAME']) === 0 ) {
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$env['SCRIPT_NAME'] = $_SERVER['SCRIPT_NAME']; //Without URL rewrite
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} else {
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$env['SCRIPT_NAME'] = pathinfo($_SERVER['SCRIPT_NAME'], PATHINFO_DIRNAME); //With URL rewrite
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}
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$env['PATH_INFO'] = substr_replace($_SERVER['REQUEST_URI'], '', 0, strlen($env['SCRIPT_NAME']));
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if ( strpos($env['PATH_INFO'], '?') !== false ) {
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$env['PATH_INFO'] = substr_replace($env['PATH_INFO'], '', strpos($env['PATH_INFO'], '?')); //query string is not removed automatically
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}
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$env['SCRIPT_NAME'] = rtrim($env['SCRIPT_NAME'], '/');
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$env['PATH_INFO'] = '/' . ltrim($env['PATH_INFO'], '/');
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//The portion of the request URI following the '?'
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$env['QUERY_STRING'] = isset($_SERVER['QUERY_STRING']) ? $_SERVER['QUERY_STRING'] : '';
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//Name of server host that is running the script
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$env['SERVER_NAME'] = $_SERVER['SERVER_NAME'];
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//Number of server port that is running the script
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$env['SERVER_PORT'] = $_SERVER['SERVER_PORT'];
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//HTTP request headers
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$specialHeaders = array('CONTENT_TYPE', 'CONTENT_LENGTH', 'PHP_AUTH_USER', 'PHP_AUTH_PW', 'PHP_AUTH_DIGEST', 'AUTH_TYPE');
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foreach ( $_SERVER as $key => $value ) {
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if ( strpos($key, 'HTTP_') === 0 ) {
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$env[substr($key, 5)] = $value;
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} else if ( strpos($key, 'X_') === 0 || in_array($key, $specialHeaders) ) {
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$env[$key] = $value;
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}
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}
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//Is the application running under HTTPS or HTTP protocol?
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$env['slim.url_scheme'] = empty($_SERVER['HTTPS']) || $_SERVER['HTTPS'] === 'off' ? 'http' : 'https';
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//Input stream (readable one time only; not available for mutipart/form-data requests)
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$rawInput = @file_get_contents('php://input');
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if ( !$rawInput ) {
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$rawInput = '';
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}
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$env['slim.input'] = $rawInput;
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//Error stream
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$env['slim.errors'] = fopen('php://stderr', 'w');
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$this->properties = $env;
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}
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}
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/**
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* Array Access: Offset Exists
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*/
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public function offsetExists( $offset ) {
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return isset($this->properties[$offset]);
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}
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/**
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* Array Access: Offset Get
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*/
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public function offsetGet( $offset ) {
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if ( isset($this->properties[$offset]) ) {
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return $this->properties[$offset];
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} else {
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return null;
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}
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}
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/**
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* Array Access: Offset Set
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*/
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public function offsetSet( $offset, $value ) {
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$this->properties[$offset] = $value;
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}
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/**
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* Array Access: Offset Unset
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*/
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public function offsetUnset( $offset ) {
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unset($this->properties[$offset]);
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}
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/**
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* IteratorAggregate
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*
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* @return ArrayIterator
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*/
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public function getIterator() {
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return new ArrayIterator($this->properties);
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}
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}
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