forked from GNUsocial/gnu-social
943 lines
27 KiB
PHP
943 lines
27 KiB
PHP
<?php
|
|
/**
|
|
* Net_URL2, a class representing a URL as per RFC 3986.
|
|
*
|
|
* PHP version 5
|
|
*
|
|
* LICENSE:
|
|
*
|
|
* Copyright (c) 2007-2009, Peytz & Co. A/S
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * 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.
|
|
* * Neither the name of the Net_URL2 nor the names of its contributors may
|
|
* 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.
|
|
*
|
|
* @category Networking
|
|
* @package Net_URL2
|
|
* @author Christian Schmidt <schmidt@php.net>
|
|
* @copyright 2007-2009 Peytz & Co. A/S
|
|
* @license http://www.opensource.org/licenses/bsd-license.php New BSD License
|
|
* @version CVS: $Id: URL2.php 309223 2011-03-14 14:26:32Z till $
|
|
* @link http://www.rfc-editor.org/rfc/rfc3986.txt
|
|
*/
|
|
|
|
/**
|
|
* Represents a URL as per RFC 3986.
|
|
*
|
|
* @category Networking
|
|
* @package Net_URL2
|
|
* @author Christian Schmidt <schmidt@php.net>
|
|
* @copyright 2007-2009 Peytz & Co. A/S
|
|
* @license http://www.opensource.org/licenses/bsd-license.php New BSD License
|
|
* @version Release: @package_version@
|
|
* @link http://pear.php.net/package/Net_URL2
|
|
*/
|
|
class Net_URL2
|
|
{
|
|
/**
|
|
* Do strict parsing in resolve() (see RFC 3986, section 5.2.2). Default
|
|
* is true.
|
|
*/
|
|
const OPTION_STRICT = 'strict';
|
|
|
|
/**
|
|
* Represent arrays in query using PHP's [] notation. Default is true.
|
|
*/
|
|
const OPTION_USE_BRACKETS = 'use_brackets';
|
|
|
|
/**
|
|
* URL-encode query variable keys. Default is true.
|
|
*/
|
|
const OPTION_ENCODE_KEYS = 'encode_keys';
|
|
|
|
/**
|
|
* Query variable separators when parsing the query string. Every character
|
|
* is considered a separator. Default is "&".
|
|
*/
|
|
const OPTION_SEPARATOR_INPUT = 'input_separator';
|
|
|
|
/**
|
|
* Query variable separator used when generating the query string. Default
|
|
* is "&".
|
|
*/
|
|
const OPTION_SEPARATOR_OUTPUT = 'output_separator';
|
|
|
|
/**
|
|
* Default options corresponds to how PHP handles $_GET.
|
|
*/
|
|
private $_options = array(
|
|
self::OPTION_STRICT => true,
|
|
self::OPTION_USE_BRACKETS => true,
|
|
self::OPTION_ENCODE_KEYS => true,
|
|
self::OPTION_SEPARATOR_INPUT => '&',
|
|
self::OPTION_SEPARATOR_OUTPUT => '&',
|
|
);
|
|
|
|
/**
|
|
* @var string|bool
|
|
*/
|
|
private $_scheme = false;
|
|
|
|
/**
|
|
* @var string|bool
|
|
*/
|
|
private $_userinfo = false;
|
|
|
|
/**
|
|
* @var string|bool
|
|
*/
|
|
private $_host = false;
|
|
|
|
/**
|
|
* @var string|bool
|
|
*/
|
|
private $_port = false;
|
|
|
|
/**
|
|
* @var string
|
|
*/
|
|
private $_path = '';
|
|
|
|
/**
|
|
* @var string|bool
|
|
*/
|
|
private $_query = false;
|
|
|
|
/**
|
|
* @var string|bool
|
|
*/
|
|
private $_fragment = false;
|
|
|
|
/**
|
|
* Constructor.
|
|
*
|
|
* @param string $url an absolute or relative URL
|
|
* @param array $options an array of OPTION_xxx constants
|
|
*
|
|
* @return $this
|
|
* @uses self::parseUrl()
|
|
*/
|
|
public function __construct($url, array $options = array())
|
|
{
|
|
foreach ($options as $optionName => $value) {
|
|
if (array_key_exists($optionName, $this->_options)) {
|
|
$this->_options[$optionName] = $value;
|
|
}
|
|
}
|
|
|
|
$this->parseUrl($url);
|
|
}
|
|
|
|
/**
|
|
* Magic Setter.
|
|
*
|
|
* This method will magically set the value of a private variable ($var)
|
|
* with the value passed as the args
|
|
*
|
|
* @param string $var The private variable to set.
|
|
* @param mixed $arg An argument of any type.
|
|
* @return void
|
|
*/
|
|
public function __set($var, $arg)
|
|
{
|
|
$method = 'set' . $var;
|
|
if (method_exists($this, $method)) {
|
|
$this->$method($arg);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Magic Getter.
|
|
*
|
|
* This is the magic get method to retrieve the private variable
|
|
* that was set by either __set() or it's setter...
|
|
*
|
|
* @param string $var The property name to retrieve.
|
|
* @return mixed $this->$var Either a boolean false if the
|
|
* property is not set or the value
|
|
* of the private property.
|
|
*/
|
|
public function __get($var)
|
|
{
|
|
$method = 'get' . $var;
|
|
if (method_exists($this, $method)) {
|
|
return $this->$method();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns the scheme, e.g. "http" or "urn", or false if there is no
|
|
* scheme specified, i.e. if this is a relative URL.
|
|
*
|
|
* @return string|bool
|
|
*/
|
|
public function getScheme()
|
|
{
|
|
return $this->_scheme;
|
|
}
|
|
|
|
/**
|
|
* Sets the scheme, e.g. "http" or "urn". Specify false if there is no
|
|
* scheme specified, i.e. if this is a relative URL.
|
|
*
|
|
* @param string|bool $scheme e.g. "http" or "urn", or false if there is no
|
|
* scheme specified, i.e. if this is a relative
|
|
* URL
|
|
*
|
|
* @return $this
|
|
* @see getScheme()
|
|
*/
|
|
public function setScheme($scheme)
|
|
{
|
|
$this->_scheme = $scheme;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns the user part of the userinfo part (the part preceding the first
|
|
* ":"), or false if there is no userinfo part.
|
|
*
|
|
* @return string|bool
|
|
*/
|
|
public function getUser()
|
|
{
|
|
return $this->_userinfo !== false
|
|
? preg_replace('@:.*$@', '', $this->_userinfo)
|
|
: false;
|
|
}
|
|
|
|
/**
|
|
* Returns the password part of the userinfo part (the part after the first
|
|
* ":"), or false if there is no userinfo part (i.e. the URL does not
|
|
* contain "@" in front of the hostname) or the userinfo part does not
|
|
* contain ":".
|
|
*
|
|
* @return string|bool
|
|
*/
|
|
public function getPassword()
|
|
{
|
|
return $this->_userinfo !== false
|
|
? substr(strstr($this->_userinfo, ':'), 1)
|
|
: false;
|
|
}
|
|
|
|
/**
|
|
* Returns the userinfo part, or false if there is none, i.e. if the
|
|
* authority part does not contain "@".
|
|
*
|
|
* @return string|bool
|
|
*/
|
|
public function getUserinfo()
|
|
{
|
|
return $this->_userinfo;
|
|
}
|
|
|
|
/**
|
|
* Sets the userinfo part. If two arguments are passed, they are combined
|
|
* in the userinfo part as username ":" password.
|
|
*
|
|
* @param string|bool $userinfo userinfo or username
|
|
* @param string|bool $password optional password, or false
|
|
*
|
|
* @return $this
|
|
*/
|
|
public function setUserinfo($userinfo, $password = false)
|
|
{
|
|
$this->_userinfo = $userinfo;
|
|
if ($password !== false) {
|
|
$this->_userinfo .= ':' . $password;
|
|
}
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns the host part, or false if there is no authority part, e.g.
|
|
* relative URLs.
|
|
*
|
|
* @return string|bool a hostname, an IP address, or false
|
|
*/
|
|
public function getHost()
|
|
{
|
|
return $this->_host;
|
|
}
|
|
|
|
/**
|
|
* Sets the host part. Specify false if there is no authority part, e.g.
|
|
* relative URLs.
|
|
*
|
|
* @param string|bool $host a hostname, an IP address, or false
|
|
*
|
|
* @return $this
|
|
*/
|
|
public function setHost($host)
|
|
{
|
|
$this->_host = $host;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns the port number, or false if there is no port number specified,
|
|
* i.e. if the default port is to be used.
|
|
*
|
|
* @return string|bool
|
|
*/
|
|
public function getPort()
|
|
{
|
|
return $this->_port;
|
|
}
|
|
|
|
/**
|
|
* Sets the port number. Specify false if there is no port number specified,
|
|
* i.e. if the default port is to be used.
|
|
*
|
|
* @param string|bool $port a port number, or false
|
|
*
|
|
* @return $this
|
|
*/
|
|
public function setPort($port)
|
|
{
|
|
$this->_port = $port;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns the authority part, i.e. [ userinfo "@" ] host [ ":" port ], or
|
|
* false if there is no authority.
|
|
*
|
|
* @return string|bool
|
|
*/
|
|
public function getAuthority()
|
|
{
|
|
if (!$this->_host) {
|
|
return false;
|
|
}
|
|
|
|
$authority = '';
|
|
|
|
if ($this->_userinfo !== false) {
|
|
$authority .= $this->_userinfo . '@';
|
|
}
|
|
|
|
$authority .= $this->_host;
|
|
|
|
if ($this->_port !== false) {
|
|
$authority .= ':' . $this->_port;
|
|
}
|
|
|
|
return $authority;
|
|
}
|
|
|
|
/**
|
|
* Sets the authority part, i.e. [ userinfo "@" ] host [ ":" port ]. Specify
|
|
* false if there is no authority.
|
|
*
|
|
* @param string|false $authority a hostname or an IP addresse, possibly
|
|
* with userinfo prefixed and port number
|
|
* appended, e.g. "foo:bar@example.org:81".
|
|
*
|
|
* @return $this
|
|
*/
|
|
public function setAuthority($authority)
|
|
{
|
|
$this->_userinfo = false;
|
|
$this->_host = false;
|
|
$this->_port = false;
|
|
if (preg_match('@^(([^\@]*)\@)?([^:]+)(:(\d*))?$@', $authority, $reg)) {
|
|
if ($reg[1]) {
|
|
$this->_userinfo = $reg[2];
|
|
}
|
|
|
|
$this->_host = $reg[3];
|
|
if (isset($reg[5])) {
|
|
$this->_port = $reg[5];
|
|
}
|
|
}
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns the path part (possibly an empty string).
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getPath()
|
|
{
|
|
return $this->_path;
|
|
}
|
|
|
|
/**
|
|
* Sets the path part (possibly an empty string).
|
|
*
|
|
* @param string $path a path
|
|
*
|
|
* @return $this
|
|
*/
|
|
public function setPath($path)
|
|
{
|
|
$this->_path = $path;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns the query string (excluding the leading "?"), or false if "?"
|
|
* is not present in the URL.
|
|
*
|
|
* @return string|bool
|
|
* @see self::getQueryVariables()
|
|
*/
|
|
public function getQuery()
|
|
{
|
|
return $this->_query;
|
|
}
|
|
|
|
/**
|
|
* Sets the query string (excluding the leading "?"). Specify false if "?"
|
|
* is not present in the URL.
|
|
*
|
|
* @param string|bool $query a query string, e.g. "foo=1&bar=2"
|
|
*
|
|
* @return $this
|
|
* @see self::setQueryVariables()
|
|
*/
|
|
public function setQuery($query)
|
|
{
|
|
$this->_query = $query;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns the fragment name, or false if "#" is not present in the URL.
|
|
*
|
|
* @return string|bool
|
|
*/
|
|
public function getFragment()
|
|
{
|
|
return $this->_fragment;
|
|
}
|
|
|
|
/**
|
|
* Sets the fragment name. Specify false if "#" is not present in the URL.
|
|
*
|
|
* @param string|bool $fragment a fragment excluding the leading "#", or
|
|
* false
|
|
*
|
|
* @return $this
|
|
*/
|
|
public function setFragment($fragment)
|
|
{
|
|
$this->_fragment = $fragment;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns the query string like an array as the variables would appear in
|
|
* $_GET in a PHP script. If the URL does not contain a "?", an empty array
|
|
* is returned.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getQueryVariables()
|
|
{
|
|
$pattern = '/[' .
|
|
preg_quote($this->getOption(self::OPTION_SEPARATOR_INPUT), '/') .
|
|
']/';
|
|
$parts = preg_split($pattern, $this->_query, -1, PREG_SPLIT_NO_EMPTY);
|
|
$return = array();
|
|
|
|
foreach ($parts as $part) {
|
|
if (strpos($part, '=') !== false) {
|
|
list($key, $value) = explode('=', $part, 2);
|
|
} else {
|
|
$key = $part;
|
|
$value = null;
|
|
}
|
|
|
|
if ($this->getOption(self::OPTION_ENCODE_KEYS)) {
|
|
$key = rawurldecode($key);
|
|
}
|
|
$value = rawurldecode($value);
|
|
|
|
if ($this->getOption(self::OPTION_USE_BRACKETS) &&
|
|
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->getOption(self::OPTION_USE_BRACKETS)
|
|
&& !empty($return[$key])
|
|
) {
|
|
$return[$key] = (array) $return[$key];
|
|
$return[$key][] = $value;
|
|
} else {
|
|
$return[$key] = $value;
|
|
}
|
|
}
|
|
|
|
return $return;
|
|
}
|
|
|
|
/**
|
|
* Sets the query string to the specified variable in the query string.
|
|
*
|
|
* @param array $array (name => value) array
|
|
*
|
|
* @return $this
|
|
*/
|
|
public function setQueryVariables(array $array)
|
|
{
|
|
if (!$array) {
|
|
$this->_query = false;
|
|
} else {
|
|
$this->_query = $this->buildQuery(
|
|
$array,
|
|
$this->getOption(self::OPTION_SEPARATOR_OUTPUT)
|
|
);
|
|
}
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Sets the specified variable in the query string.
|
|
*
|
|
* @param string $name variable name
|
|
* @param mixed $value variable value
|
|
*
|
|
* @return $this
|
|
*/
|
|
public function setQueryVariable($name, $value)
|
|
{
|
|
$array = $this->getQueryVariables();
|
|
$array[$name] = $value;
|
|
$this->setQueryVariables($array);
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Removes the specifed variable from the query string.
|
|
*
|
|
* @param string $name a query string variable, e.g. "foo" in "?foo=1"
|
|
*
|
|
* @return void
|
|
*/
|
|
public function unsetQueryVariable($name)
|
|
{
|
|
$array = $this->getQueryVariables();
|
|
unset($array[$name]);
|
|
$this->setQueryVariables($array);
|
|
}
|
|
|
|
/**
|
|
* Returns a string representation of this URL.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getURL()
|
|
{
|
|
// See RFC 3986, section 5.3
|
|
$url = "";
|
|
|
|
if ($this->_scheme !== false) {
|
|
$url .= $this->_scheme . ':';
|
|
}
|
|
|
|
$authority = $this->getAuthority();
|
|
if ($authority !== false) {
|
|
$url .= '//' . $authority;
|
|
}
|
|
$url .= $this->_path;
|
|
|
|
if ($this->_query !== false) {
|
|
$url .= '?' . $this->_query;
|
|
}
|
|
|
|
if ($this->_fragment !== false) {
|
|
$url .= '#' . $this->_fragment;
|
|
}
|
|
|
|
return $url;
|
|
}
|
|
|
|
/**
|
|
* Returns a string representation of this URL.
|
|
*
|
|
* @return string
|
|
* @see toString()
|
|
*/
|
|
public function __toString()
|
|
{
|
|
return $this->getURL();
|
|
}
|
|
|
|
/**
|
|
* Returns a normalized string representation of this URL. This is useful
|
|
* for comparison of URLs.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getNormalizedURL()
|
|
{
|
|
$url = clone $this;
|
|
$url->normalize();
|
|
return $url->getUrl();
|
|
}
|
|
|
|
/**
|
|
* Returns a normalized Net_URL2 instance.
|
|
*
|
|
* @return Net_URL2
|
|
*/
|
|
public function normalize()
|
|
{
|
|
// See RFC 3886, section 6
|
|
|
|
// Schemes are case-insensitive
|
|
if ($this->_scheme) {
|
|
$this->_scheme = strtolower($this->_scheme);
|
|
}
|
|
|
|
// Hostnames are case-insensitive
|
|
if ($this->_host) {
|
|
$this->_host = strtolower($this->_host);
|
|
}
|
|
|
|
// Remove default port number for known schemes (RFC 3986, section 6.2.3)
|
|
if ($this->_port &&
|
|
$this->_scheme &&
|
|
$this->_port == getservbyname($this->_scheme, 'tcp')) {
|
|
|
|
$this->_port = false;
|
|
}
|
|
|
|
// Normalize case of %XX percentage-encodings (RFC 3986, section 6.2.2.1)
|
|
foreach (array('_userinfo', '_host', '_path') as $part) {
|
|
if ($this->$part) {
|
|
$this->$part = preg_replace('/%[0-9a-f]{2}/ie',
|
|
'strtoupper("\0")',
|
|
$this->$part);
|
|
}
|
|
}
|
|
|
|
// Path segment normalization (RFC 3986, section 6.2.2.3)
|
|
$this->_path = self::removeDotSegments($this->_path);
|
|
|
|
// Scheme based normalization (RFC 3986, section 6.2.3)
|
|
if ($this->_host && !$this->_path) {
|
|
$this->_path = '/';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns whether this instance represents an absolute URL.
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function isAbsolute()
|
|
{
|
|
return (bool) $this->_scheme;
|
|
}
|
|
|
|
/**
|
|
* Returns an Net_URL2 instance representing an absolute URL relative to
|
|
* this URL.
|
|
*
|
|
* @param Net_URL2|string $reference relative URL
|
|
*
|
|
* @return Net_URL2
|
|
*/
|
|
public function resolve($reference)
|
|
{
|
|
if (!$reference instanceof Net_URL2) {
|
|
$reference = new self($reference);
|
|
}
|
|
if (!$this->isAbsolute()) {
|
|
throw new Exception('Base-URL must be absolute');
|
|
}
|
|
|
|
// A non-strict parser may ignore a scheme in the reference if it is
|
|
// identical to the base URI's scheme.
|
|
if (!$this->getOption(self::OPTION_STRICT) && $reference->_scheme == $this->_scheme) {
|
|
$reference->_scheme = false;
|
|
}
|
|
|
|
$target = new self('');
|
|
if ($reference->_scheme !== false) {
|
|
$target->_scheme = $reference->_scheme;
|
|
$target->setAuthority($reference->getAuthority());
|
|
$target->_path = self::removeDotSegments($reference->_path);
|
|
$target->_query = $reference->_query;
|
|
} else {
|
|
$authority = $reference->getAuthority();
|
|
if ($authority !== false) {
|
|
$target->setAuthority($authority);
|
|
$target->_path = self::removeDotSegments($reference->_path);
|
|
$target->_query = $reference->_query;
|
|
} else {
|
|
if ($reference->_path == '') {
|
|
$target->_path = $this->_path;
|
|
if ($reference->_query !== false) {
|
|
$target->_query = $reference->_query;
|
|
} else {
|
|
$target->_query = $this->_query;
|
|
}
|
|
} else {
|
|
if (substr($reference->_path, 0, 1) == '/') {
|
|
$target->_path = self::removeDotSegments($reference->_path);
|
|
} else {
|
|
// Merge paths (RFC 3986, section 5.2.3)
|
|
if ($this->_host !== false && $this->_path == '') {
|
|
$target->_path = '/' . $this->_path;
|
|
} else {
|
|
$i = strrpos($this->_path, '/');
|
|
if ($i !== false) {
|
|
$target->_path = substr($this->_path, 0, $i + 1);
|
|
}
|
|
$target->_path .= $reference->_path;
|
|
}
|
|
$target->_path = self::removeDotSegments($target->_path);
|
|
}
|
|
$target->_query = $reference->_query;
|
|
}
|
|
$target->setAuthority($this->getAuthority());
|
|
}
|
|
$target->_scheme = $this->_scheme;
|
|
}
|
|
|
|
$target->_fragment = $reference->_fragment;
|
|
|
|
return $target;
|
|
}
|
|
|
|
/**
|
|
* Removes dots as described in RFC 3986, section 5.2.4, e.g.
|
|
* "/foo/../bar/baz" => "/bar/baz"
|
|
*
|
|
* @param string $path a path
|
|
*
|
|
* @return string a path
|
|
*/
|
|
public static function removeDotSegments($path)
|
|
{
|
|
$output = '';
|
|
|
|
// Make sure not to be trapped in an infinite loop due to a bug in this
|
|
// method
|
|
$j = 0;
|
|
while ($path && $j++ < 100) {
|
|
if (substr($path, 0, 2) == './') {
|
|
// Step 2.A
|
|
$path = substr($path, 2);
|
|
} elseif (substr($path, 0, 3) == '../') {
|
|
// Step 2.A
|
|
$path = substr($path, 3);
|
|
} elseif (substr($path, 0, 3) == '/./' || $path == '/.') {
|
|
// Step 2.B
|
|
$path = '/' . substr($path, 3);
|
|
} elseif (substr($path, 0, 4) == '/../' || $path == '/..') {
|
|
// Step 2.C
|
|
$path = '/' . substr($path, 4);
|
|
$i = strrpos($output, '/');
|
|
$output = $i === false ? '' : substr($output, 0, $i);
|
|
} elseif ($path == '.' || $path == '..') {
|
|
// Step 2.D
|
|
$path = '';
|
|
} else {
|
|
// Step 2.E
|
|
$i = strpos($path, '/');
|
|
if ($i === 0) {
|
|
$i = strpos($path, '/', 1);
|
|
}
|
|
if ($i === false) {
|
|
$i = strlen($path);
|
|
}
|
|
$output .= substr($path, 0, $i);
|
|
$path = substr($path, $i);
|
|
}
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Percent-encodes all non-alphanumeric characters except these: _ . - ~
|
|
* Similar to PHP's rawurlencode(), except that it also encodes ~ in PHP
|
|
* 5.2.x and earlier.
|
|
*
|
|
* @param $raw the string to encode
|
|
* @return string
|
|
*/
|
|
public static function urlencode($string)
|
|
{
|
|
$encoded = rawurlencode($string);
|
|
|
|
// This is only necessary in PHP < 5.3.
|
|
$encoded = str_replace('%7E', '~', $encoded);
|
|
return $encoded;
|
|
}
|
|
|
|
/**
|
|
* Returns a Net_URL2 instance representing the canonical URL of the
|
|
* currently executing PHP script.
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function getCanonical()
|
|
{
|
|
if (!isset($_SERVER['REQUEST_METHOD'])) {
|
|
// ALERT - no current URL
|
|
throw new Exception('Script was not called through a webserver');
|
|
}
|
|
|
|
// Begin with a relative URL
|
|
$url = new self($_SERVER['PHP_SELF']);
|
|
$url->_scheme = isset($_SERVER['HTTPS']) ? 'https' : 'http';
|
|
$url->_host = $_SERVER['SERVER_NAME'];
|
|
$port = $_SERVER['SERVER_PORT'];
|
|
if ($url->_scheme == 'http' && $port != 80 ||
|
|
$url->_scheme == 'https' && $port != 443) {
|
|
|
|
$url->_port = $port;
|
|
}
|
|
return $url;
|
|
}
|
|
|
|
/**
|
|
* Returns the URL used to retrieve the current request.
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function getRequestedURL()
|
|
{
|
|
return self::getRequested()->getUrl();
|
|
}
|
|
|
|
/**
|
|
* Returns a Net_URL2 instance representing the URL used to retrieve the
|
|
* current request.
|
|
*
|
|
* @return Net_URL2
|
|
*/
|
|
public static function getRequested()
|
|
{
|
|
if (!isset($_SERVER['REQUEST_METHOD'])) {
|
|
// ALERT - no current URL
|
|
throw new Exception('Script was not called through a webserver');
|
|
}
|
|
|
|
// Begin with a relative URL
|
|
$url = new self($_SERVER['REQUEST_URI']);
|
|
$url->_scheme = isset($_SERVER['HTTPS']) ? 'https' : 'http';
|
|
// Set host and possibly port
|
|
$url->setAuthority($_SERVER['HTTP_HOST']);
|
|
return $url;
|
|
}
|
|
|
|
/**
|
|
* Returns the value of the specified option.
|
|
*
|
|
* @param string $optionName The name of the option to retrieve
|
|
*
|
|
* @return mixed
|
|
*/
|
|
public function getOption($optionName)
|
|
{
|
|
return isset($this->_options[$optionName])
|
|
? $this->_options[$optionName] : false;
|
|
}
|
|
|
|
/**
|
|
* A simple version of http_build_query in userland. The encoded string is
|
|
* percentage encoded according to RFC 3986.
|
|
*
|
|
* @param array $data An array, which has to be converted into
|
|
* QUERY_STRING. Anything is possible.
|
|
* @param string $seperator See {@link self::OPTION_SEPARATOR_OUTPUT}
|
|
* @param string $key For stacked values (arrays in an array).
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function buildQuery(array $data, $separator, $key = null)
|
|
{
|
|
$query = array();
|
|
foreach ($data as $name => $value) {
|
|
if ($this->getOption(self::OPTION_ENCODE_KEYS) === true) {
|
|
$name = rawurlencode($name);
|
|
}
|
|
if ($key !== null) {
|
|
if ($this->getOption(self::OPTION_USE_BRACKETS) === true) {
|
|
$name = $key . '[' . $name . ']';
|
|
} else {
|
|
$name = $key;
|
|
}
|
|
}
|
|
if (is_array($value)) {
|
|
$query[] = $this->buildQuery($value, $separator, $name);
|
|
} else {
|
|
$query[] = $name . '=' . rawurlencode($value);
|
|
}
|
|
}
|
|
return implode($separator, $query);
|
|
}
|
|
|
|
/**
|
|
* This method uses a funky regex to parse the url into the designated parts.
|
|
*
|
|
* @param string $url
|
|
*
|
|
* @return void
|
|
* @uses self::$_scheme, self::setAuthority(), self::$_path, self::$_query,
|
|
* self::$_fragment
|
|
* @see self::__construct()
|
|
*/
|
|
protected function parseUrl($url)
|
|
{
|
|
// The regular expression is copied verbatim from RFC 3986, appendix B.
|
|
// The expression does not validate the URL but matches any string.
|
|
preg_match('!^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?!',
|
|
$url,
|
|
$matches);
|
|
|
|
// "path" is always present (possibly as an empty string); the rest
|
|
// are optional.
|
|
$this->_scheme = !empty($matches[1]) ? $matches[2] : false;
|
|
$this->setAuthority(!empty($matches[3]) ? $matches[4] : false);
|
|
$this->_path = $matches[5];
|
|
$this->_query = !empty($matches[6]) ? $matches[7] : false;
|
|
$this->_fragment = !empty($matches[8]) ? $matches[9] : false;
|
|
}
|
|
}
|