/libraries/joomla/environment/uri.php
PHP | 722 lines | 347 code | 76 blank | 299 comment | 52 complexity | 2739b840aa8885f126f1facba8f56ea8 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.1, BSD-3-Clause
- <?php
- /**
- * @package Joomla.Platform
- * @subpackage Environment
- *
- * @copyright Copyright (C) 2005 - 2011 Open Source Matters, Inc. All rights reserved.
- * @license GNU General Public License version 2 or later; see LICENSE
- */
- defined('JPATH_PLATFORM') or die;
- jimport('joomla.utilities.string');
- /**
- * JURI Class
- *
- * This class serves two purposes. First to parse a URI and provide a common interface
- * for the Joomla Framework to access and manipulate a URI. Second to obtain the URI of
- * the current executing script from the server regardless of server.
- *
- * @package Joomla.Platform
- * @subpackage Environment
- * @since 11.1
- */
- class JURI extends JObject
- {
- /**
- * @var string Original URI
- */
- protected $_uri = null;
- /**
- * @var string Protocol
- */
- protected $_scheme = null;
- /**
- * @var string Host
- */
- protected $_host = null;
- /**
- * @var integer Port
- */
- protected $_port = null;
- /**
- * @var string Username
- */
- protected $_user = null;
- /**
- * @var string Password
- */
- protected $_pass = null;
- /**
- * @var string Path
- */
- protected $_path = null;
- /**
- * @var string Query
- */
- protected $_query = null;
- /**
- * @var string Anchor
- */
- protected $_fragment = null;
- /**
- * @var array Query variable hash.
- */
- protected $_vars = array ();
- /**
- * Constructor.
- * You can pass a URI string to the constructor to initialise a specific URI.
- *
- * @param string $uri The optional URI string
- */
- public function __construct($uri = null)
- {
- if (!is_null($uri)) {
- $this->parse($uri);
- }
- }
- /**
- * Magic method to get the string representation of the URI object.
- *
- * @return string
- * @since 11.1
- */
- public function __toString()
- {
- return $this->toString();
- }
- /**
- * Returns the global JURI object, only creating it
- * if it doesn't already exist.
- *
- * @param string $uri The URI to parse. [optional: if null uses script URI]
- * @return JURI The URI object.
- * @since 11.1
- */
- public static function getInstance($uri = 'SERVER')
- {
- static $instances = array();
- if (!isset($instances[$uri]))
- {
- // Are we obtaining the URI from the server?
- if ($uri == 'SERVER')
- {
- // Determine if the request was over SSL (HTTPS).
- if (isset($_SERVER['HTTPS']) && !empty($_SERVER['HTTPS']) && (strtolower($_SERVER['HTTPS']) != 'off')) {
- $https = 's://';
- }
- else {
- $https = '://';
- }
- /*
- * Since we are assigning the URI from the server variables, we first need
- * to determine if we are running on apache or IIS. If PHP_SELF and REQUEST_URI
- * are present, we will assume we are running on apache.
- */
- if (!empty($_SERVER['PHP_SELF']) && !empty ($_SERVER['REQUEST_URI']))
- {
- // To build the entire URI we need to prepend the protocol, and the http host
- // to the URI string.
- $theURI = 'http' . $https . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
- // Since we do not have REQUEST_URI to work with, we will assume we are
- // running on IIS and will therefore need to work some magic with the SCRIPT_NAME and
- // QUERY_STRING environment variables.
- //
- }
- else
- {
- // IIS uses the SCRIPT_NAME variable instead of a REQUEST_URI variable... thanks, MS
- $theURI = 'http' . $https . $_SERVER['HTTP_HOST'] . $_SERVER['SCRIPT_NAME'];
- // If the query string exists append it to the URI string
- if (isset($_SERVER['QUERY_STRING']) && !empty($_SERVER['QUERY_STRING'])) {
- $theURI .= '?' . $_SERVER['QUERY_STRING'];
- }
- }
- // Now we need to clean what we got since we can't trust the server var
- $theURI = urldecode($theURI);
- $theURI = str_replace('"', '"',$theURI);
- $theURI = str_replace('<', '<',$theURI);
- $theURI = str_replace('>', '>',$theURI);
- $theURI = preg_replace('/eval\((.*)\)/', '', $theURI);
- $theURI = preg_replace('/[\\\"\\\'][\\s]*javascript:(.*)[\\\"\\\']/', '""', $theURI);
- }
- else
- {
- // We were given a URI
- $theURI = $uri;
- }
- // Create the new JURI instance
- $instances[$uri] = new JURI($theURI);
- }
- return $instances[$uri];
- }
- /**
- * Returns the base URI for the request.
- *
- * @static
- * @param boolean $pathonly If false, prepend the scheme, host and port information. Default is false.
- * @return string The base URI string
- * @since 11.1
- */
- public static function base($pathonly = false)
- {
- static $base;
- // Get the base request path.
- if (!isset($base))
- {
- $config = JFactory::getConfig();
- $live_site = $config->get('live_site');
- if (trim($live_site) != '')
- {
- $uri = self::getInstance($live_site);
- $base['prefix'] = $uri->toString(array('scheme', 'host', 'port'));
- $base['path'] = rtrim($uri->toString(array('path')), '/\\');
- if (JPATH_BASE == JPATH_ADMINISTRATOR) {
- $base['path'] .= '/administrator';
- }
- }
- else
- {
- $uri = self::getInstance();
- $base['prefix'] = $uri->toString(array('scheme', 'host', 'port'));
- if (strpos(php_sapi_name(), 'cgi') !== false && !ini_get('cgi.fix_pathinfo') && !empty($_SERVER['REQUEST_URI']))
- {
- // PHP-CGI on Apache with "cgi.fix_pathinfo = 0"
- // We shouldn't have user-supplied PATH_INFO in PHP_SELF in this case
- // because PHP will not work with PATH_INFO at all.
- $script_name = $_SERVER['PHP_SELF'];
- }
- else
- {
- // Others
- $script_name = $_SERVER['SCRIPT_NAME'];
- }
- $base['path'] = rtrim(dirname($script_name), '/\\');
- }
- }
- return $pathonly === false ? $base['prefix'].$base['path'].'/' : $base['path'];
- }
- /**
- * Returns the root URI for the request.
- *
- * @param boolean $pathonly If false, prepend the scheme, host and port information. Default is false..
- * @return string The root URI string.
- * @since 11.1
- */
- public static function root($pathonly = false, $path = null)
- {
- static $root;
- // Get the scheme
- if (!isset($root))
- {
- $uri = self::getInstance(self::base());
- $root['prefix'] = $uri->toString(array('scheme', 'host', 'port'));
- $root['path'] = rtrim($uri->toString(array('path')), '/\\');
- }
- // Get the scheme
- if (isset($path)) {
- $root['path'] = $path;
- }
- return $pathonly === false ? $root['prefix'].$root['path'].'/' : $root['path'];
- }
- /**
- * Returns the URL for the request, minus the query.
- *
- * @return string
- * @since 11.1
- */
- public static function current()
- {
- static $current;
- // Get the current URL.
- if (!isset($current))
- {
- $uri = self::getInstance();
- $current = $uri->toString(array('scheme', 'host', 'port', 'path'));
- }
- return $current;
- }
- /**
- * Parse a given URI and populate the class fields.
- *
- * @param string $uri The URI string to parse.
- * @return boolean True on success.
- * @since 11.1
- */
- public function parse($uri)
- {
- // Initialise variables
- $retval = false;
- // Set the original URI to fall back on
- $this->_uri = $uri;
- /*
- * Parse the URI and populate the object fields. If URI is parsed properly,
- * set method return value to true.
- */
- if ($_parts = JString::parse_url($uri)) {
- $retval = true;
- }
- // We need to replace & with & for parse_str to work right...
- if (isset ($_parts['query']) && strpos($_parts['query'], '&')) {
- $_parts['query'] = str_replace('&', '&', $_parts['query']);
- }
- $this->_scheme = isset ($_parts['scheme']) ? $_parts['scheme'] : null;
- $this->_user = isset ($_parts['user']) ? $_parts['user'] : null;
- $this->_pass = isset ($_parts['pass']) ? $_parts['pass'] : null;
- $this->_host = isset ($_parts['host']) ? $_parts['host'] : null;
- $this->_port = isset ($_parts['port']) ? $_parts['port'] : null;
- $this->_path = isset ($_parts['path']) ? $_parts['path'] : null;
- $this->_query = isset ($_parts['query'])? $_parts['query'] : null;
- $this->_fragment = isset ($_parts['fragment']) ? $_parts['fragment'] : null;
- // Parse the query
- if (isset($_parts['query'])) {
- parse_str($_parts['query'], $this->_vars);
- }
- return $retval;
- }
- /**
- * Returns full uri string.
- *
- * @param array $parts An array specifying the parts to render.
- *
- * @return string The rendered URI string.
- * @since 11.1
- */
- public function toString($parts = array('scheme', 'user', 'pass', 'host', 'port', 'path', 'query', 'fragment'))
- {
- // Make sure the query is created
- $query = $this->getQuery();
- $uri = '';
- $uri .= in_array('scheme', $parts) ? (!empty($this->_scheme) ? $this->_scheme.'://' : '') : '';
- $uri .= in_array('user', $parts) ? $this->_user : '';
- $uri .= in_array('pass', $parts) ? (!empty ($this->_pass) ? ':' : '') .$this->_pass. (!empty ($this->_user) ? '@' : '') : '';
- $uri .= in_array('host', $parts) ? $this->_host : '';
- $uri .= in_array('port', $parts) ? (!empty ($this->_port) ? ':' : '').$this->_port : '';
- $uri .= in_array('path', $parts) ? $this->_path : '';
- $uri .= in_array('query', $parts) ? (!empty ($query) ? '?'.$query : '') : '';
- $uri .= in_array('fragment', $parts)? (!empty ($this->_fragment) ? '#'.$this->_fragment : '') : '';
- return $uri;
- }
- /**
- * Adds a query variable and value, replacing the value if it
- * already exists and returning the old value.
- *
- * @param string $name Name of the query variable to set.
- * @param string $value Value of the query variable.
- * @return string Previous value for the query variable.
- * @since 11.1
- */
- public function setVar($name, $value)
- {
- $tmp = @$this->_vars[$name];
- $this->_vars[$name] = $value;
- // Empty the query
- $this->_query = null;
- return $tmp;
- }
- /**
- * Checks if variable exists.
- *
- * @param string $name Name of the query variable to check.
- * @return bool exists.
- * @since 11.1
- */
- public function hasVar($name)
- {
- return array_key_exists($name, $this->_vars);
- }
- /**
- * Returns a query variable by name.
- *
- * @param string $name Name of the query variable to get.
- * @return array Query variables.
- * @since 11.1
- */
- public function getVar($name, $default=null)
- {
- if (array_key_exists($name, $this->_vars)) {
- return $this->_vars[$name];
- }
- return $default;
- }
- /**
- * Removes an item from the query string variables if it exists.
- *
- * @param string $name Name of variable to remove.
- * @since 11.1
- */
- public function delVar($name)
- {
- if (array_key_exists($name, $this->_vars))
- {
- unset($this->_vars[$name]);
- //empty the query
- $this->_query = null;
- }
- }
- /**
- * Sets the query to a supplied string in format:
- * foo=bar&x=y
- *
- * @param mixed (array|string) $query The query string.
- * @since 11.1
- */
- public function setQuery($query)
- {
- if (is_array($query))
- {
- $this->_vars = $query;
- } else {
- if (strpos($query, '&') !== false)
- {
- $query = str_replace('&','&',$query);
- }
- parse_str($query, $this->_vars);
- }
- // Empty the query
- $this->_query = null;
- }
- /**
- * Returns flat query string.
- *
- * @return string Query string.
- * @since 11.1
- */
- public function getQuery($toArray = false)
- {
- if ($toArray) {
- return $this->_vars;
- }
- // If the query is empty build it first
- if (is_null($this->_query)) {
- $this->_query = self::buildQuery($this->_vars);
- }
- return $this->_query;
- }
- /**
- * Build a query from a array (reverse of the PHP parse_str()).
- *
- * @return string The resulting query string.
- * @since 11.1
- * @see parse_str()
- */
- public static function buildQuery($params, $akey = null)
- {
- if (!is_array($params) || count($params) == 0) {
- return false;
- }
- $out = array();
- // Reset in case we are looping
- if (!isset($akey) && !count($out)) {
- unset($out);
- $out = array();
- }
- foreach ($params as $key => $val)
- {
- if (is_array($val))
- {
- if (!is_null($akey)) {
- $out[] = self::buildQuery($val,$akey.'['.$key.']');
- } else {
- $out[] = self::buildQuery($val,$key);
- }
- continue;
- }
- $thekey = (!$akey) ? $key : $akey.'['.$key.']';
- $out[] = $thekey."=".urlencode($val);
- }
- return implode("&",$out);
- }
- /**
- * Get URI scheme (protocol)
- * ie. http, https, ftp, etc...
- *
- * @return string The URI scheme.
- * @since 11.1
- */
- public function getScheme()
- {
- return $this->_scheme;
- }
- /**
- * Set URI scheme (protocol)
- * ie. http, https, ftp, etc...
- *
- * @param string $scheme The URI scheme.
- * @since 11.1
- */
- public function setScheme($scheme)
- {
- $this->_scheme = $scheme;
- }
- /**
- * Get URI username
- * Returns the username, or null if no username was specified.
- *
- * @return string The URI username.
- * @since 11.1
- */
- public function getUser()
- {
- return $this->_user;
- }
- /**
- * Set URI username.
- *
- * @param string $user The URI username.
- * @since 11.1
- */
- public function setUser($user)
- {
- $this->_user = $user;
- }
- /**
- * Get URI password
- * Returns the password, or null if no password was specified.
- *
- * @return string The URI password.
- * @since 11.1
- */
- public function getPass()
- {
- return $this->_pass;
- }
- /**
- * Set URI password.
- *
- * @param string $pass The URI password.
- * @since 11.1
- */
- public function setPass($pass)
- {
- $this->_pass = $pass;
- }
- /**
- * Get URI host
- * Returns the hostname/ip or null if no hostname/ip was specified.
- *
- * @return string The URI host.
- * @since 11.1
- */
- public function getHost()
- {
- return $this->_host;
- }
- /**
- * Set URI host.
- *
- * @param string $host The URI host.
- * @since 11.1
- */
- public function setHost($host)
- {
- $this->_host = $host;
- }
- /**
- * Get URI port
- * Returns the port number, or null if no port was specified.
- *
- * @return int The URI port number.
- */
- public function getPort()
- {
- return (isset ($this->_port)) ? $this->_port : null;
- }
- /**
- * Set URI port.
- *
- * @param int $port The URI port number.
- * @since 11.1
- */
- public function setPort($port)
- {
- $this->_port = $port;
- }
- /**
- * Gets the URI path string.
- *
- * @return string The URI path string.
- * @since 11.1
- */
- public function getPath()
- {
- return $this->_path;
- }
- /**
- * Set the URI path string.
- *
- * @param string $path The URI path string.
- * @since 11.1
- */
- public function setPath($path)
- {
- $this->_path = $this->_cleanPath($path);
- }
- /**
- * Get the URI archor string
- * Everything after the "#".
- *
- * @return string The URI anchor string.
- * @since 11.1
- */
- public function getFragment()
- {
- return $this->_fragment;
- }
- /**
- * Set the URI anchor string
- * everything after the "#".
- *
- * @param string $anchor The URI anchor string.
- * @since 11.1
- */
- public function setFragment($anchor)
- {
- $this->_fragment = $anchor;
- }
- /**
- * Checks whether the current URI is using HTTPS.
- *
- * @return boolean True if using SSL via HTTPS.
- * @since 11.1
- */
- public function isSSL()
- {
- return $this->getScheme() == 'https' ? true : false;
- }
- /**
- * Checks if the supplied URL is internal
- *
- * @param string $url The URL to check.
- * @return boolean True if Internal.
- * @since 11.1
- */
- public static function isInternal($url)
- {
- $uri = self::getInstance($url);
- $base = $uri->toString(array('scheme', 'host', 'port', 'path'));
- $host = $uri->toString(array('scheme', 'host', 'port'));
- if (stripos($base, self::base()) !== 0 && !empty($host)) {
- return false;
- }
- return true;
- }
- /**
- * 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
- *
- * @param string $uri The URI path to clean.
- * @return string Cleaned and resolved URI path.
- * @since 11.1
- */
- private function _cleanPath($path)
- {
- $path = explode('/', preg_replace('#(/+)#', '/', $path));
- for ($i = 0, $n = count($path); $i < $n; $i ++)
- {
- if ($path[$i] == '.' OR $path[$i] == '..')
- {
- if(($path[$i] == '.') OR ($path[$i] == '..' AND $i == 1 AND $path[0] == ''))
- {
- unset ($path[$i]);
- $path = array_values($path);
- $i --;
- $n --;
- }
- elseif ($path[$i] == '..' AND ($i > 1 OR ($i == 1 AND $path[0] != '')))
- {
- unset ($path[$i]);
- unset ($path[$i -1]);
- $path = array_values($path);
- $i -= 2;
- $n -= 2;
- }
- }
- }
- return implode('/', $path);
- }
- }