forked from GNUsocial/gnu-social
486 lines
15 KiB
PHP
486 lines
15 KiB
PHP
<?php
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// +-----------------------------------------------------------------------+
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// | Copyright (c) 2002-2004, Richard Heyes |
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// | All rights reserved. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | o Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | o Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution.|
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// | o The names of the authors may not be used to endorse or promote |
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// | products derived from this software without specific prior written |
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// | permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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// | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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// | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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// | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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// | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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// | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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// | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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// | |
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// +-----------------------------------------------------------------------+
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// | Author: Richard Heyes <richard at php net> |
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// +-----------------------------------------------------------------------+
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//
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// $Id: URL.php,v 1.49 2007/06/28 14:43:07 davidc Exp $
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//
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// Net_URL Class
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class Net_URL
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{
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var $options = array('encode_query_keys' => false);
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/**
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* Full url
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* @var string
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*/
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var $url;
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/**
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* Protocol
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* @var string
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*/
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var $protocol;
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/**
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* Username
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* @var string
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*/
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var $username;
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/**
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* Password
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* @var string
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*/
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var $password;
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/**
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* Host
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* @var string
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*/
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var $host;
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/**
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* Port
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* @var integer
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*/
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var $port;
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/**
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* Path
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* @var string
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*/
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var $path;
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/**
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* Query string
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* @var array
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*/
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var $querystring;
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/**
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* Anchor
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* @var string
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*/
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var $anchor;
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/**
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* Whether to use []
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* @var bool
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*/
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var $useBrackets;
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/**
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* PHP4 Constructor
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*
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* @see __construct()
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*/
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function Net_URL($url = null, $useBrackets = true)
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{
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$this->__construct($url, $useBrackets);
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}
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/**
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* PHP5 Constructor
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*
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* Parses the given url and stores the various parts
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* Defaults are used in certain cases
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*
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* @param string $url Optional URL
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* @param bool $useBrackets Whether to use square brackets when
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* multiple querystrings with the same name
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* exist
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*/
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function __construct($url = null, $useBrackets = true)
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{
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$this->url = $url;
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$this->useBrackets = $useBrackets;
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$this->initialize();
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}
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function initialize()
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{
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$HTTP_SERVER_VARS = !empty($_SERVER) ? $_SERVER : $GLOBALS['HTTP_SERVER_VARS'];
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$this->user = '';
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$this->pass = '';
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$this->host = '';
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$this->port = 80;
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$this->path = '';
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$this->querystring = array();
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$this->anchor = '';
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// Only use defaults if not an absolute URL given
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if (!preg_match('/^[a-z0-9]+:\/\//i', $this->url)) {
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$this->protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on' ? 'https' : 'http');
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/**
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* Figure out host/port
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*/
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if (!empty($HTTP_SERVER_VARS['HTTP_HOST']) &&
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preg_match('/^(.*)(:([0-9]+))?$/U', $HTTP_SERVER_VARS['HTTP_HOST'], $matches))
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{
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$host = $matches[1];
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if (!empty($matches[3])) {
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$port = $matches[3];
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} else {
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$port = $this->getStandardPort($this->protocol);
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}
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}
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$this->user = '';
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$this->pass = '';
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$this->host = !empty($host) ? $host : (isset($HTTP_SERVER_VARS['SERVER_NAME']) ? $HTTP_SERVER_VARS['SERVER_NAME'] : 'localhost');
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$this->port = !empty($port) ? $port : (isset($HTTP_SERVER_VARS['SERVER_PORT']) ? $HTTP_SERVER_VARS['SERVER_PORT'] : $this->getStandardPort($this->protocol));
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$this->path = !empty($HTTP_SERVER_VARS['PHP_SELF']) ? $HTTP_SERVER_VARS['PHP_SELF'] : '/';
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$this->querystring = isset($HTTP_SERVER_VARS['QUERY_STRING']) ? $this->_parseRawQuerystring($HTTP_SERVER_VARS['QUERY_STRING']) : null;
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$this->anchor = '';
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}
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// Parse the url and store the various parts
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if (!empty($this->url)) {
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$urlinfo = parse_url($this->url);
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// Default querystring
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$this->querystring = array();
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foreach ($urlinfo as $key => $value) {
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switch ($key) {
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case 'scheme':
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$this->protocol = $value;
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$this->port = $this->getStandardPort($value);
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break;
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case 'user':
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case 'pass':
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case 'host':
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case 'port':
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$this->$key = $value;
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break;
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case 'path':
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if ($value{0} == '/') {
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$this->path = $value;
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} else {
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$path = dirname($this->path) == DIRECTORY_SEPARATOR ? '' : dirname($this->path);
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$this->path = sprintf('%s/%s', $path, $value);
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}
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break;
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case 'query':
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$this->querystring = $this->_parseRawQueryString($value);
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break;
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case 'fragment':
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$this->anchor = $value;
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break;
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}
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}
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}
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}
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/**
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* Returns full url
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*
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* @return string Full url
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* @access public
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*/
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function getURL()
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{
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$querystring = $this->getQueryString();
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$this->url = $this->protocol . '://'
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. $this->user . (!empty($this->pass) ? ':' : '')
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. $this->pass . (!empty($this->user) ? '@' : '')
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. $this->host . ($this->port == $this->getStandardPort($this->protocol) ? '' : ':' . $this->port)
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. $this->path
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. (!empty($querystring) ? '?' . $querystring : '')
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. (!empty($this->anchor) ? '#' . $this->anchor : '');
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return $this->url;
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}
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/**
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* Adds or updates a querystring item (URL parameter).
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* Automatically encodes parameters with rawurlencode() if $preencoded
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* is false.
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* You can pass an array to $value, it gets mapped via [] in the URL if
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* $this->useBrackets is activated.
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*
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* @param string $name Name of item
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* @param string $value Value of item
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* @param bool $preencoded Whether value is urlencoded or not, default = not
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* @access public
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*/
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function addQueryString($name, $value, $preencoded = false)
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{
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if ($this->getOption('encode_query_keys')) {
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$name = rawurlencode($name);
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}
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if ($preencoded) {
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$this->querystring[$name] = $value;
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} else {
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$this->querystring[$name] = is_array($value) ? array_map('rawurlencode', $value): rawurlencode($value);
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}
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}
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/**
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* Removes a querystring item
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*
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* @param string $name Name of item
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* @access public
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*/
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function removeQueryString($name)
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{
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if ($this->getOption('encode_query_keys')) {
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$name = rawurlencode($name);
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}
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if (isset($this->querystring[$name])) {
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unset($this->querystring[$name]);
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}
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}
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/**
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* Sets the querystring to literally what you supply
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*
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* @param string $querystring The querystring data. Should be of the format foo=bar&x=y etc
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* @access public
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*/
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function addRawQueryString($querystring)
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{
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$this->querystring = $this->_parseRawQueryString($querystring);
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}
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/**
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* Returns flat querystring
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*
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* @return string Querystring
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* @access public
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*/
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function getQueryString()
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{
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if (!empty($this->querystring)) {
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foreach ($this->querystring as $name => $value) {
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// Encode var name
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$name = rawurlencode($name);
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if (is_array($value)) {
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foreach ($value as $k => $v) {
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$querystring[] = $this->useBrackets ? sprintf('%s[%s]=%s', $name, $k, $v) : ($name . '=' . $v);
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}
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} elseif (!is_null($value)) {
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$querystring[] = $name . '=' . $value;
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} else {
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$querystring[] = $name;
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}
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}
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$querystring = implode(ini_get('arg_separator.output'), $querystring);
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} else {
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$querystring = '';
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}
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return $querystring;
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}
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/**
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* Parses raw querystring and returns an array of it
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*
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* @param string $querystring The querystring to parse
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* @return array An array of the querystring data
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* @access private
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*/
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function _parseRawQuerystring($querystring)
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{
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$parts = preg_split('/[' . preg_quote(ini_get('arg_separator.input'), '/') . ']/', $querystring, -1, PREG_SPLIT_NO_EMPTY);
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$return = array();
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foreach ($parts as $part) {
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if (strpos($part, '=') !== false) {
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$value = substr($part, strpos($part, '=') + 1);
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$key = substr($part, 0, strpos($part, '='));
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} else {
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$value = null;
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$key = $part;
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}
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if (!$this->getOption('encode_query_keys')) {
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$key = rawurldecode($key);
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}
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if (preg_match('#^(.*)\[([0-9a-z_-]*)\]#i', $key, $matches)) {
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$key = $matches[1];
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$idx = $matches[2];
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// Ensure is an array
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if (empty($return[$key]) || !is_array($return[$key])) {
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$return[$key] = array();
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}
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// Add data
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if ($idx === '') {
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$return[$key][] = $value;
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} else {
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$return[$key][$idx] = $value;
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}
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} elseif (!$this->useBrackets AND !empty($return[$key])) {
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$return[$key] = (array)$return[$key];
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$return[$key][] = $value;
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} else {
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$return[$key] = $value;
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}
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}
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return $return;
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}
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/**
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* Resolves //, ../ and ./ from a path and returns
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* the result. Eg:
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*
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* /foo/bar/../boo.php => /foo/boo.php
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* /foo/bar/../../boo.php => /boo.php
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* /foo/bar/.././/boo.php => /foo/boo.php
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*
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* This method can also be called statically.
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*
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* @param string $path URL path to resolve
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* @return string The result
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*/
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function resolvePath($path)
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{
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$path = explode('/', str_replace('//', '/', $path));
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for ($i=0; $i<count($path); $i++) {
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if ($path[$i] == '.') {
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unset($path[$i]);
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$path = array_values($path);
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$i--;
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} elseif ($path[$i] == '..' AND ($i > 1 OR ($i == 1 AND $path[0] != '') ) ) {
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unset($path[$i]);
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unset($path[$i-1]);
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$path = array_values($path);
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$i -= 2;
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} elseif ($path[$i] == '..' AND $i == 1 AND $path[0] == '') {
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unset($path[$i]);
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$path = array_values($path);
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$i--;
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} else {
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continue;
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}
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}
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return implode('/', $path);
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}
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/**
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* Returns the standard port number for a protocol
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*
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* @param string $scheme The protocol to lookup
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* @return integer Port number or NULL if no scheme matches
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*
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* @author Philippe Jausions <Philippe.Jausions@11abacus.com>
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*/
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function getStandardPort($scheme)
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{
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switch (strtolower($scheme)) {
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case 'http': return 80;
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case 'https': return 443;
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case 'ftp': return 21;
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case 'imap': return 143;
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case 'imaps': return 993;
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case 'pop3': return 110;
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case 'pop3s': return 995;
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default: return null;
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}
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}
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/**
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* Forces the URL to a particular protocol
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*
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* @param string $protocol Protocol to force the URL to
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* @param integer $port Optional port (standard port is used by default)
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*/
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function setProtocol($protocol, $port = null)
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{
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$this->protocol = $protocol;
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$this->port = is_null($port) ? $this->getStandardPort($protocol) : $port;
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}
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/**
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* Set an option
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*
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* This function set an option
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* to be used thorough the script.
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*
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* @access public
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* @param string $optionName The optionname to set
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* @param string $value The value of this option.
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*/
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function setOption($optionName, $value)
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{
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if (!array_key_exists($optionName, $this->options)) {
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return false;
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}
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$this->options[$optionName] = $value;
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$this->initialize();
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}
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/**
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* Get an option
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*
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* This function gets an option
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* from the $this->options array
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* and return it's value.
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*
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* @access public
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* @param string $opionName The name of the option to retrieve
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* @see $this->options
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*/
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function getOption($optionName)
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{
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if (!isset($this->options[$optionName])) {
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return false;
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}
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return $this->options[$optionName];
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}
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}
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?>
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