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