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1088 lines
28 KiB
PHP
1088 lines
28 KiB
PHP
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<?php
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/**
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* IRI parser/serialiser/normaliser
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*
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* @package Requests
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* @subpackage Utilities
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*/
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/**
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* IRI parser/serialiser/normaliser
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*
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* Copyright (c) 2007-2010, Geoffrey Sneddon and Steve Minutillo.
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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 are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* * Neither the name of the SimplePie Team nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @package Requests
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* @subpackage Utilities
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* @author Geoffrey Sneddon
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* @author Steve Minutillo
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* @copyright 2007-2009 Geoffrey Sneddon and Steve Minutillo
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* @license http://www.opensource.org/licenses/bsd-license.php
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* @link http://hg.gsnedders.com/iri/
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*
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* @property string $iri IRI we're working with
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* @property-read string $uri IRI in URI form, {@see to_uri}
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* @property string $scheme Scheme part of the IRI
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* @property string $authority Authority part, formatted for a URI (userinfo + host + port)
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* @property string $iauthority Authority part of the IRI (userinfo + host + port)
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* @property string $userinfo Userinfo part, formatted for a URI (after '://' and before '@')
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* @property string $iuserinfo Userinfo part of the IRI (after '://' and before '@')
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* @property string $host Host part, formatted for a URI
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* @property string $ihost Host part of the IRI
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* @property string $port Port part of the IRI (after ':')
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* @property string $path Path part, formatted for a URI (after first '/')
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* @property string $ipath Path part of the IRI (after first '/')
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* @property string $query Query part, formatted for a URI (after '?')
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* @property string $iquery Query part of the IRI (after '?')
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* @property string $fragment Fragment, formatted for a URI (after '#')
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* @property string $ifragment Fragment part of the IRI (after '#')
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*/
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class Requests_IRI {
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/**
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* Scheme
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*
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* @var string
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*/
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protected $scheme = null;
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/**
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* User Information
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*
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* @var string
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*/
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protected $iuserinfo = null;
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/**
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* ihost
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*
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* @var string
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*/
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protected $ihost = null;
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/**
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* Port
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*
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* @var string
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*/
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protected $port = null;
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/**
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* ipath
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*
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* @var string
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*/
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protected $ipath = '';
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/**
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* iquery
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*
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* @var string
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*/
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protected $iquery = null;
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/**
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* ifragment
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*
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* @var string
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*/
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protected $ifragment = null;
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/**
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* Normalization database
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*
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* Each key is the scheme, each value is an array with each key as the IRI
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* part and value as the default value for that part.
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*/
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protected $normalization = array(
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'acap' => array(
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'port' => 674
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),
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'dict' => array(
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'port' => 2628
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),
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'file' => array(
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'ihost' => 'localhost'
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),
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'http' => array(
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'port' => 80,
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),
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'https' => array(
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'port' => 443,
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),
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);
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/**
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* Return the entire IRI when you try and read the object as a string
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*
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* @return string
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*/
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public function __toString() {
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return $this->get_iri();
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}
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/**
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* Overload __set() to provide access via properties
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*
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* @param string $name Property name
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* @param mixed $value Property value
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*/
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public function __set($name, $value) {
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if (method_exists($this, 'set_' . $name)) {
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call_user_func(array($this, 'set_' . $name), $value);
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}
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elseif (
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$name === 'iauthority'
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|| $name === 'iuserinfo'
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|| $name === 'ihost'
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|| $name === 'ipath'
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|| $name === 'iquery'
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|| $name === 'ifragment'
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) {
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call_user_func(array($this, 'set_' . substr($name, 1)), $value);
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}
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}
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/**
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* Overload __get() to provide access via properties
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*
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* @param string $name Property name
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* @return mixed
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*/
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public function __get($name) {
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// isset() returns false for null, we don't want to do that
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// Also why we use array_key_exists below instead of isset()
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$props = get_object_vars($this);
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if (
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$name === 'iri' ||
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$name === 'uri' ||
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$name === 'iauthority' ||
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$name === 'authority'
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) {
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$method = 'get_' . $name;
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$return = $this->$method();
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}
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elseif (array_key_exists($name, $props)) {
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$return = $this->$name;
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}
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// host -> ihost
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elseif (($prop = 'i' . $name) && array_key_exists($prop, $props)) {
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$name = $prop;
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$return = $this->$prop;
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}
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// ischeme -> scheme
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elseif (($prop = substr($name, 1)) && array_key_exists($prop, $props)) {
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$name = $prop;
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$return = $this->$prop;
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}
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else {
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trigger_error('Undefined property: ' . get_class($this) . '::' . $name, E_USER_NOTICE);
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$return = null;
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}
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if ($return === null && isset($this->normalization[$this->scheme][$name])) {
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return $this->normalization[$this->scheme][$name];
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}
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else {
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return $return;
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}
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}
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/**
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* Overload __isset() to provide access via properties
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*
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* @param string $name Property name
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* @return bool
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*/
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public function __isset($name) {
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return (method_exists($this, 'get_' . $name) || isset($this->$name));
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}
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/**
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* Overload __unset() to provide access via properties
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*
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* @param string $name Property name
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*/
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public function __unset($name) {
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if (method_exists($this, 'set_' . $name)) {
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call_user_func(array($this, 'set_' . $name), '');
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}
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}
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/**
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* Create a new IRI object, from a specified string
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*
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* @param string|null $iri
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*/
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public function __construct($iri = null) {
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$this->set_iri($iri);
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}
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/**
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* Create a new IRI object by resolving a relative IRI
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*
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* Returns false if $base is not absolute, otherwise an IRI.
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*
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* @param IRI|string $base (Absolute) Base IRI
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* @param IRI|string $relative Relative IRI
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* @return IRI|false
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*/
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public static function absolutize($base, $relative) {
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if (!($relative instanceof Requests_IRI)) {
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$relative = new Requests_IRI($relative);
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}
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if (!$relative->is_valid()) {
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return false;
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}
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elseif ($relative->scheme !== null) {
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return clone $relative;
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}
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if (!($base instanceof Requests_IRI)) {
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$base = new Requests_IRI($base);
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}
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if ($base->scheme === null || !$base->is_valid()) {
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return false;
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}
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if ($relative->get_iri() !== '') {
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if ($relative->iuserinfo !== null || $relative->ihost !== null || $relative->port !== null) {
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$target = clone $relative;
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$target->scheme = $base->scheme;
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}
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else {
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$target = new Requests_IRI;
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$target->scheme = $base->scheme;
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$target->iuserinfo = $base->iuserinfo;
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$target->ihost = $base->ihost;
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$target->port = $base->port;
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if ($relative->ipath !== '') {
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if ($relative->ipath[0] === '/') {
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$target->ipath = $relative->ipath;
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}
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elseif (($base->iuserinfo !== null || $base->ihost !== null || $base->port !== null) && $base->ipath === '') {
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$target->ipath = '/' . $relative->ipath;
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}
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elseif (($last_segment = strrpos($base->ipath, '/')) !== false) {
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$target->ipath = substr($base->ipath, 0, $last_segment + 1) . $relative->ipath;
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}
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else {
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$target->ipath = $relative->ipath;
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}
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$target->ipath = $target->remove_dot_segments($target->ipath);
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$target->iquery = $relative->iquery;
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}
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else {
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$target->ipath = $base->ipath;
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if ($relative->iquery !== null) {
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$target->iquery = $relative->iquery;
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}
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elseif ($base->iquery !== null) {
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$target->iquery = $base->iquery;
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}
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}
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$target->ifragment = $relative->ifragment;
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}
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}
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else {
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$target = clone $base;
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$target->ifragment = null;
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}
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$target->scheme_normalization();
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return $target;
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}
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/**
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* Parse an IRI into scheme/authority/path/query/fragment segments
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*
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* @param string $iri
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* @return array
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*/
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protected function parse_iri($iri) {
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$iri = trim($iri, "\x20\x09\x0A\x0C\x0D");
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$has_match = preg_match('/^((?P<scheme>[^:\/?#]+):)?(\/\/(?P<authority>[^\/?#]*))?(?P<path>[^?#]*)(\?(?P<query>[^#]*))?(#(?P<fragment>.*))?$/', $iri, $match);
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if (!$has_match) {
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throw new Requests_Exception('Cannot parse supplied IRI', 'iri.cannot_parse', $iri);
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}
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if ($match[1] === '') {
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$match['scheme'] = null;
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}
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if (!isset($match[3]) || $match[3] === '') {
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$match['authority'] = null;
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}
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if (!isset($match[5])) {
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$match['path'] = '';
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}
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if (!isset($match[6]) || $match[6] === '') {
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$match['query'] = null;
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}
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if (!isset($match[8]) || $match[8] === '') {
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$match['fragment'] = null;
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}
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return $match;
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}
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||
|
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||
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|
/**
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||
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* Remove dot segments from a path
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||
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|
*
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||
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* @param string $input
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* @return string
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||
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*/
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||
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protected function remove_dot_segments($input) {
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$output = '';
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while (strpos($input, './') !== false || strpos($input, '/.') !== false || $input === '.' || $input === '..') {
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|
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// A: If the input buffer begins with a prefix of "../" or "./",
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|
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// then remove that prefix from the input buffer; otherwise,
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if (strpos($input, '../') === 0) {
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$input = substr($input, 3);
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}
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||
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elseif (strpos($input, './') === 0) {
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$input = substr($input, 2);
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||
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}
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||
|
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// B: if the input buffer begins with a prefix of "/./" or "/.",
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||
|
|
// where "." is a complete path segment, then replace that prefix
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||
|
|
// with "/" in the input buffer; otherwise,
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||
|
|
elseif (strpos($input, '/./') === 0) {
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||
|
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$input = substr($input, 2);
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||
|
|
}
|
||
|
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elseif ($input === '/.') {
|
||
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$input = '/';
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||
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}
|
||
|
|
// C: if the input buffer begins with a prefix of "/../" or "/..",
|
||
|
|
// where ".." is a complete path segment, then replace that prefix
|
||
|
|
// with "/" in the input buffer and remove the last segment and its
|
||
|
|
// preceding "/" (if any) from the output buffer; otherwise,
|
||
|
|
elseif (strpos($input, '/../') === 0) {
|
||
|
|
$input = substr($input, 3);
|
||
|
|
$output = substr_replace($output, '', strrpos($output, '/'));
|
||
|
|
}
|
||
|
|
elseif ($input === '/..') {
|
||
|
|
$input = '/';
|
||
|
|
$output = substr_replace($output, '', strrpos($output, '/'));
|
||
|
|
}
|
||
|
|
// D: if the input buffer consists only of "." or "..", then remove
|
||
|
|
// that from the input buffer; otherwise,
|
||
|
|
elseif ($input === '.' || $input === '..') {
|
||
|
|
$input = '';
|
||
|
|
}
|
||
|
|
// E: move the first path segment in the input buffer to the end of
|
||
|
|
// the output buffer, including the initial "/" character (if any)
|
||
|
|
// and any subsequent characters up to, but not including, the next
|
||
|
|
// "/" character or the end of the input buffer
|
||
|
|
elseif (($pos = strpos($input, '/', 1)) !== false) {
|
||
|
|
$output .= substr($input, 0, $pos);
|
||
|
|
$input = substr_replace($input, '', 0, $pos);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$output .= $input;
|
||
|
|
$input = '';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $output . $input;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Replace invalid character with percent encoding
|
||
|
|
*
|
||
|
|
* @param string $string Input string
|
||
|
|
* @param string $extra_chars Valid characters not in iunreserved or
|
||
|
|
* iprivate (this is ASCII-only)
|
||
|
|
* @param bool $iprivate Allow iprivate
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function replace_invalid_with_pct_encoding($string, $extra_chars, $iprivate = false) {
|
||
|
|
// Normalize as many pct-encoded sections as possible
|
||
|
|
$string = preg_replace_callback('/(?:%[A-Fa-f0-9]{2})+/', array(&$this, 'remove_iunreserved_percent_encoded'), $string);
|
||
|
|
|
||
|
|
// Replace invalid percent characters
|
||
|
|
$string = preg_replace('/%(?![A-Fa-f0-9]{2})/', '%25', $string);
|
||
|
|
|
||
|
|
// Add unreserved and % to $extra_chars (the latter is safe because all
|
||
|
|
// pct-encoded sections are now valid).
|
||
|
|
$extra_chars .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~%';
|
||
|
|
|
||
|
|
// Now replace any bytes that aren't allowed with their pct-encoded versions
|
||
|
|
$position = 0;
|
||
|
|
$strlen = strlen($string);
|
||
|
|
while (($position += strspn($string, $extra_chars, $position)) < $strlen) {
|
||
|
|
$value = ord($string[$position]);
|
||
|
|
|
||
|
|
// Start position
|
||
|
|
$start = $position;
|
||
|
|
|
||
|
|
// By default we are valid
|
||
|
|
$valid = true;
|
||
|
|
|
||
|
|
// No one byte sequences are valid due to the while.
|
||
|
|
// Two byte sequence:
|
||
|
|
if (($value & 0xE0) === 0xC0) {
|
||
|
|
$character = ($value & 0x1F) << 6;
|
||
|
|
$length = 2;
|
||
|
|
$remaining = 1;
|
||
|
|
}
|
||
|
|
// Three byte sequence:
|
||
|
|
elseif (($value & 0xF0) === 0xE0) {
|
||
|
|
$character = ($value & 0x0F) << 12;
|
||
|
|
$length = 3;
|
||
|
|
$remaining = 2;
|
||
|
|
}
|
||
|
|
// Four byte sequence:
|
||
|
|
elseif (($value & 0xF8) === 0xF0) {
|
||
|
|
$character = ($value & 0x07) << 18;
|
||
|
|
$length = 4;
|
||
|
|
$remaining = 3;
|
||
|
|
}
|
||
|
|
// Invalid byte:
|
||
|
|
else {
|
||
|
|
$valid = false;
|
||
|
|
$length = 1;
|
||
|
|
$remaining = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($remaining) {
|
||
|
|
if ($position + $length <= $strlen) {
|
||
|
|
for ($position++; $remaining; $position++) {
|
||
|
|
$value = ord($string[$position]);
|
||
|
|
|
||
|
|
// Check that the byte is valid, then add it to the character:
|
||
|
|
if (($value & 0xC0) === 0x80) {
|
||
|
|
$character |= ($value & 0x3F) << (--$remaining * 6);
|
||
|
|
}
|
||
|
|
// If it is invalid, count the sequence as invalid and reprocess the current byte:
|
||
|
|
else {
|
||
|
|
$valid = false;
|
||
|
|
$position--;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$position = $strlen - 1;
|
||
|
|
$valid = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Percent encode anything invalid or not in ucschar
|
||
|
|
if (
|
||
|
|
// Invalid sequences
|
||
|
|
!$valid
|
||
|
|
// Non-shortest form sequences are invalid
|
||
|
|
|| $length > 1 && $character <= 0x7F
|
||
|
|
|| $length > 2 && $character <= 0x7FF
|
||
|
|
|| $length > 3 && $character <= 0xFFFF
|
||
|
|
// Outside of range of ucschar codepoints
|
||
|
|
// Noncharacters
|
||
|
|
|| ($character & 0xFFFE) === 0xFFFE
|
||
|
|
|| $character >= 0xFDD0 && $character <= 0xFDEF
|
||
|
|
|| (
|
||
|
|
// Everything else not in ucschar
|
||
|
|
$character > 0xD7FF && $character < 0xF900
|
||
|
|
|| $character < 0xA0
|
||
|
|
|| $character > 0xEFFFD
|
||
|
|
)
|
||
|
|
&& (
|
||
|
|
// Everything not in iprivate, if it applies
|
||
|
|
!$iprivate
|
||
|
|
|| $character < 0xE000
|
||
|
|
|| $character > 0x10FFFD
|
||
|
|
)
|
||
|
|
) {
|
||
|
|
// If we were a character, pretend we weren't, but rather an error.
|
||
|
|
if ($valid) {
|
||
|
|
$position--;
|
||
|
|
}
|
||
|
|
|
||
|
|
for ($j = $start; $j <= $position; $j++) {
|
||
|
|
$string = substr_replace($string, sprintf('%%%02X', ord($string[$j])), $j, 1);
|
||
|
|
$j += 2;
|
||
|
|
$position += 2;
|
||
|
|
$strlen += 2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $string;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Callback function for preg_replace_callback.
|
||
|
|
*
|
||
|
|
* Removes sequences of percent encoded bytes that represent UTF-8
|
||
|
|
* encoded characters in iunreserved
|
||
|
|
*
|
||
|
|
* @param array $match PCRE match
|
||
|
|
* @return string Replacement
|
||
|
|
*/
|
||
|
|
protected function remove_iunreserved_percent_encoded($match) {
|
||
|
|
// As we just have valid percent encoded sequences we can just explode
|
||
|
|
// and ignore the first member of the returned array (an empty string).
|
||
|
|
$bytes = explode('%', $match[0]);
|
||
|
|
|
||
|
|
// Initialize the new string (this is what will be returned) and that
|
||
|
|
// there are no bytes remaining in the current sequence (unsurprising
|
||
|
|
// at the first byte!).
|
||
|
|
$string = '';
|
||
|
|
$remaining = 0;
|
||
|
|
|
||
|
|
// Loop over each and every byte, and set $value to its value
|
||
|
|
for ($i = 1, $len = count($bytes); $i < $len; $i++) {
|
||
|
|
$value = hexdec($bytes[$i]);
|
||
|
|
|
||
|
|
// If we're the first byte of sequence:
|
||
|
|
if (!$remaining) {
|
||
|
|
// Start position
|
||
|
|
$start = $i;
|
||
|
|
|
||
|
|
// By default we are valid
|
||
|
|
$valid = true;
|
||
|
|
|
||
|
|
// One byte sequence:
|
||
|
|
if ($value <= 0x7F) {
|
||
|
|
$character = $value;
|
||
|
|
$length = 1;
|
||
|
|
}
|
||
|
|
// Two byte sequence:
|
||
|
|
elseif (($value & 0xE0) === 0xC0) {
|
||
|
|
$character = ($value & 0x1F) << 6;
|
||
|
|
$length = 2;
|
||
|
|
$remaining = 1;
|
||
|
|
}
|
||
|
|
// Three byte sequence:
|
||
|
|
elseif (($value & 0xF0) === 0xE0) {
|
||
|
|
$character = ($value & 0x0F) << 12;
|
||
|
|
$length = 3;
|
||
|
|
$remaining = 2;
|
||
|
|
}
|
||
|
|
// Four byte sequence:
|
||
|
|
elseif (($value & 0xF8) === 0xF0) {
|
||
|
|
$character = ($value & 0x07) << 18;
|
||
|
|
$length = 4;
|
||
|
|
$remaining = 3;
|
||
|
|
}
|
||
|
|
// Invalid byte:
|
||
|
|
else {
|
||
|
|
$valid = false;
|
||
|
|
$remaining = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Continuation byte:
|
||
|
|
else {
|
||
|
|
// Check that the byte is valid, then add it to the character:
|
||
|
|
if (($value & 0xC0) === 0x80) {
|
||
|
|
$remaining--;
|
||
|
|
$character |= ($value & 0x3F) << ($remaining * 6);
|
||
|
|
}
|
||
|
|
// If it is invalid, count the sequence as invalid and reprocess the current byte as the start of a sequence:
|
||
|
|
else {
|
||
|
|
$valid = false;
|
||
|
|
$remaining = 0;
|
||
|
|
$i--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// If we've reached the end of the current byte sequence, append it to Unicode::$data
|
||
|
|
if (!$remaining) {
|
||
|
|
// Percent encode anything invalid or not in iunreserved
|
||
|
|
if (
|
||
|
|
// Invalid sequences
|
||
|
|
!$valid
|
||
|
|
// Non-shortest form sequences are invalid
|
||
|
|
|| $length > 1 && $character <= 0x7F
|
||
|
|
|| $length > 2 && $character <= 0x7FF
|
||
|
|
|| $length > 3 && $character <= 0xFFFF
|
||
|
|
// Outside of range of iunreserved codepoints
|
||
|
|
|| $character < 0x2D
|
||
|
|
|| $character > 0xEFFFD
|
||
|
|
// Noncharacters
|
||
|
|
|| ($character & 0xFFFE) === 0xFFFE
|
||
|
|
|| $character >= 0xFDD0 && $character <= 0xFDEF
|
||
|
|
// Everything else not in iunreserved (this is all BMP)
|
||
|
|
|| $character === 0x2F
|
||
|
|
|| $character > 0x39 && $character < 0x41
|
||
|
|
|| $character > 0x5A && $character < 0x61
|
||
|
|
|| $character > 0x7A && $character < 0x7E
|
||
|
|
|| $character > 0x7E && $character < 0xA0
|
||
|
|
|| $character > 0xD7FF && $character < 0xF900
|
||
|
|
) {
|
||
|
|
for ($j = $start; $j <= $i; $j++) {
|
||
|
|
$string .= '%' . strtoupper($bytes[$j]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
for ($j = $start; $j <= $i; $j++) {
|
||
|
|
$string .= chr(hexdec($bytes[$j]));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// If we have any bytes left over they are invalid (i.e., we are
|
||
|
|
// mid-way through a multi-byte sequence)
|
||
|
|
if ($remaining) {
|
||
|
|
for ($j = $start; $j < $len; $j++) {
|
||
|
|
$string .= '%' . strtoupper($bytes[$j]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $string;
|
||
|
|
}
|
||
|
|
|
||
|
|
protected function scheme_normalization() {
|
||
|
|
if (isset($this->normalization[$this->scheme]['iuserinfo']) && $this->iuserinfo === $this->normalization[$this->scheme]['iuserinfo']) {
|
||
|
|
$this->iuserinfo = null;
|
||
|
|
}
|
||
|
|
if (isset($this->normalization[$this->scheme]['ihost']) && $this->ihost === $this->normalization[$this->scheme]['ihost']) {
|
||
|
|
$this->ihost = null;
|
||
|
|
}
|
||
|
|
if (isset($this->normalization[$this->scheme]['port']) && $this->port === $this->normalization[$this->scheme]['port']) {
|
||
|
|
$this->port = null;
|
||
|
|
}
|
||
|
|
if (isset($this->normalization[$this->scheme]['ipath']) && $this->ipath === $this->normalization[$this->scheme]['ipath']) {
|
||
|
|
$this->ipath = '';
|
||
|
|
}
|
||
|
|
if (isset($this->ihost) && empty($this->ipath)) {
|
||
|
|
$this->ipath = '/';
|
||
|
|
}
|
||
|
|
if (isset($this->normalization[$this->scheme]['iquery']) && $this->iquery === $this->normalization[$this->scheme]['iquery']) {
|
||
|
|
$this->iquery = null;
|
||
|
|
}
|
||
|
|
if (isset($this->normalization[$this->scheme]['ifragment']) && $this->ifragment === $this->normalization[$this->scheme]['ifragment']) {
|
||
|
|
$this->ifragment = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if the object represents a valid IRI. This needs to be done on each
|
||
|
|
* call as some things change depending on another part of the IRI.
|
||
|
|
*
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
public function is_valid() {
|
||
|
|
$isauthority = $this->iuserinfo !== null || $this->ihost !== null || $this->port !== null;
|
||
|
|
if ($this->ipath !== '' &&
|
||
|
|
(
|
||
|
|
$isauthority && (
|
||
|
|
$this->ipath[0] !== '/' ||
|
||
|
|
substr($this->ipath, 0, 2) === '//'
|
||
|
|
) ||
|
||
|
|
(
|
||
|
|
$this->scheme === null &&
|
||
|
|
!$isauthority &&
|
||
|
|
strpos($this->ipath, ':') !== false &&
|
||
|
|
(strpos($this->ipath, '/') === false ? true : strpos($this->ipath, ':') < strpos($this->ipath, '/'))
|
||
|
|
)
|
||
|
|
)
|
||
|
|
) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the entire IRI. Returns true on success, false on failure (if there
|
||
|
|
* are any invalid characters).
|
||
|
|
*
|
||
|
|
* @param string $iri
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function set_iri($iri) {
|
||
|
|
static $cache;
|
||
|
|
if (!$cache) {
|
||
|
|
$cache = array();
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($iri === null) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
if (isset($cache[$iri])) {
|
||
|
|
list($this->scheme,
|
||
|
|
$this->iuserinfo,
|
||
|
|
$this->ihost,
|
||
|
|
$this->port,
|
||
|
|
$this->ipath,
|
||
|
|
$this->iquery,
|
||
|
|
$this->ifragment,
|
||
|
|
$return) = $cache[$iri];
|
||
|
|
return $return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$parsed = $this->parse_iri((string) $iri);
|
||
|
|
|
||
|
|
$return = $this->set_scheme($parsed['scheme'])
|
||
|
|
&& $this->set_authority($parsed['authority'])
|
||
|
|
&& $this->set_path($parsed['path'])
|
||
|
|
&& $this->set_query($parsed['query'])
|
||
|
|
&& $this->set_fragment($parsed['fragment']);
|
||
|
|
|
||
|
|
$cache[$iri] = array($this->scheme,
|
||
|
|
$this->iuserinfo,
|
||
|
|
$this->ihost,
|
||
|
|
$this->port,
|
||
|
|
$this->ipath,
|
||
|
|
$this->iquery,
|
||
|
|
$this->ifragment,
|
||
|
|
$return);
|
||
|
|
return $return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the scheme. Returns true on success, false on failure (if there are
|
||
|
|
* any invalid characters).
|
||
|
|
*
|
||
|
|
* @param string $scheme
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function set_scheme($scheme) {
|
||
|
|
if ($scheme === null) {
|
||
|
|
$this->scheme = null;
|
||
|
|
}
|
||
|
|
elseif (!preg_match('/^[A-Za-z][0-9A-Za-z+\-.]*$/', $scheme)) {
|
||
|
|
$this->scheme = null;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$this->scheme = strtolower($scheme);
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the authority. Returns true on success, false on failure (if there are
|
||
|
|
* any invalid characters).
|
||
|
|
*
|
||
|
|
* @param string $authority
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function set_authority($authority) {
|
||
|
|
static $cache;
|
||
|
|
if (!$cache) {
|
||
|
|
$cache = array();
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($authority === null) {
|
||
|
|
$this->iuserinfo = null;
|
||
|
|
$this->ihost = null;
|
||
|
|
$this->port = null;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
if (isset($cache[$authority])) {
|
||
|
|
list($this->iuserinfo,
|
||
|
|
$this->ihost,
|
||
|
|
$this->port,
|
||
|
|
$return) = $cache[$authority];
|
||
|
|
|
||
|
|
return $return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$remaining = $authority;
|
||
|
|
if (($iuserinfo_end = strrpos($remaining, '@')) !== false) {
|
||
|
|
$iuserinfo = substr($remaining, 0, $iuserinfo_end);
|
||
|
|
$remaining = substr($remaining, $iuserinfo_end + 1);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$iuserinfo = null;
|
||
|
|
}
|
||
|
|
if (($port_start = strpos($remaining, ':', strpos($remaining, ']'))) !== false) {
|
||
|
|
$port = substr($remaining, $port_start + 1);
|
||
|
|
if ($port === false || $port === '') {
|
||
|
|
$port = null;
|
||
|
|
}
|
||
|
|
$remaining = substr($remaining, 0, $port_start);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$port = null;
|
||
|
|
}
|
||
|
|
|
||
|
|
$return = $this->set_userinfo($iuserinfo) &&
|
||
|
|
$this->set_host($remaining) &&
|
||
|
|
$this->set_port($port);
|
||
|
|
|
||
|
|
$cache[$authority] = array($this->iuserinfo,
|
||
|
|
$this->ihost,
|
||
|
|
$this->port,
|
||
|
|
$return);
|
||
|
|
|
||
|
|
return $return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the iuserinfo.
|
||
|
|
*
|
||
|
|
* @param string $iuserinfo
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function set_userinfo($iuserinfo) {
|
||
|
|
if ($iuserinfo === null) {
|
||
|
|
$this->iuserinfo = null;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$this->iuserinfo = $this->replace_invalid_with_pct_encoding($iuserinfo, '!$&\'()*+,;=:');
|
||
|
|
$this->scheme_normalization();
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the ihost. Returns true on success, false on failure (if there are
|
||
|
|
* any invalid characters).
|
||
|
|
*
|
||
|
|
* @param string $ihost
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function set_host($ihost) {
|
||
|
|
if ($ihost === null) {
|
||
|
|
$this->ihost = null;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
if (substr($ihost, 0, 1) === '[' && substr($ihost, -1) === ']') {
|
||
|
|
if (Requests_IPv6::check_ipv6(substr($ihost, 1, -1))) {
|
||
|
|
$this->ihost = '[' . Requests_IPv6::compress(substr($ihost, 1, -1)) . ']';
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$this->ihost = null;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$ihost = $this->replace_invalid_with_pct_encoding($ihost, '!$&\'()*+,;=');
|
||
|
|
|
||
|
|
// Lowercase, but ignore pct-encoded sections (as they should
|
||
|
|
// remain uppercase). This must be done after the previous step
|
||
|
|
// as that can add unescaped characters.
|
||
|
|
$position = 0;
|
||
|
|
$strlen = strlen($ihost);
|
||
|
|
while (($position += strcspn($ihost, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ%', $position)) < $strlen) {
|
||
|
|
if ($ihost[$position] === '%') {
|
||
|
|
$position += 3;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$ihost[$position] = strtolower($ihost[$position]);
|
||
|
|
$position++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->ihost = $ihost;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->scheme_normalization();
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the port. Returns true on success, false on failure (if there are
|
||
|
|
* any invalid characters).
|
||
|
|
*
|
||
|
|
* @param string $port
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function set_port($port) {
|
||
|
|
if ($port === null) {
|
||
|
|
$this->port = null;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (strspn($port, '0123456789') === strlen($port)) {
|
||
|
|
$this->port = (int) $port;
|
||
|
|
$this->scheme_normalization();
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->port = null;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the ipath.
|
||
|
|
*
|
||
|
|
* @param string $ipath
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function set_path($ipath) {
|
||
|
|
static $cache;
|
||
|
|
if (!$cache) {
|
||
|
|
$cache = array();
|
||
|
|
}
|
||
|
|
|
||
|
|
$ipath = (string) $ipath;
|
||
|
|
|
||
|
|
if (isset($cache[$ipath])) {
|
||
|
|
$this->ipath = $cache[$ipath][(int) ($this->scheme !== null)];
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$valid = $this->replace_invalid_with_pct_encoding($ipath, '!$&\'()*+,;=@:/');
|
||
|
|
$removed = $this->remove_dot_segments($valid);
|
||
|
|
|
||
|
|
$cache[$ipath] = array($valid, $removed);
|
||
|
|
$this->ipath = ($this->scheme !== null) ? $removed : $valid;
|
||
|
|
}
|
||
|
|
$this->scheme_normalization();
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the iquery.
|
||
|
|
*
|
||
|
|
* @param string $iquery
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function set_query($iquery) {
|
||
|
|
if ($iquery === null) {
|
||
|
|
$this->iquery = null;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$this->iquery = $this->replace_invalid_with_pct_encoding($iquery, '!$&\'()*+,;=:@/?', true);
|
||
|
|
$this->scheme_normalization();
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the ifragment.
|
||
|
|
*
|
||
|
|
* @param string $ifragment
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function set_fragment($ifragment) {
|
||
|
|
if ($ifragment === null) {
|
||
|
|
$this->ifragment = null;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$this->ifragment = $this->replace_invalid_with_pct_encoding($ifragment, '!$&\'()*+,;=:@/?');
|
||
|
|
$this->scheme_normalization();
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Convert an IRI to a URI (or parts thereof)
|
||
|
|
*
|
||
|
|
* @param string|bool IRI to convert (or false from {@see get_iri})
|
||
|
|
* @return string|false URI if IRI is valid, false otherwise.
|
||
|
|
*/
|
||
|
|
protected function to_uri($string) {
|
||
|
|
if (!is_string($string)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
static $non_ascii;
|
||
|
|
if (!$non_ascii) {
|
||
|
|
$non_ascii = implode('', range("\x80", "\xFF"));
|
||
|
|
}
|
||
|
|
|
||
|
|
$position = 0;
|
||
|
|
$strlen = strlen($string);
|
||
|
|
while (($position += strcspn($string, $non_ascii, $position)) < $strlen) {
|
||
|
|
$string = substr_replace($string, sprintf('%%%02X', ord($string[$position])), $position, 1);
|
||
|
|
$position += 3;
|
||
|
|
$strlen += 2;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $string;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the complete IRI
|
||
|
|
*
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function get_iri() {
|
||
|
|
if (!$this->is_valid()) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$iri = '';
|
||
|
|
if ($this->scheme !== null) {
|
||
|
|
$iri .= $this->scheme . ':';
|
||
|
|
}
|
||
|
|
if (($iauthority = $this->get_iauthority()) !== null) {
|
||
|
|
$iri .= '//' . $iauthority;
|
||
|
|
}
|
||
|
|
$iri .= $this->ipath;
|
||
|
|
if ($this->iquery !== null) {
|
||
|
|
$iri .= '?' . $this->iquery;
|
||
|
|
}
|
||
|
|
if ($this->ifragment !== null) {
|
||
|
|
$iri .= '#' . $this->ifragment;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $iri;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the complete URI
|
||
|
|
*
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function get_uri() {
|
||
|
|
return $this->to_uri($this->get_iri());
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the complete iauthority
|
||
|
|
*
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function get_iauthority() {
|
||
|
|
if ($this->iuserinfo === null && $this->ihost === null && $this->port === null) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
$iauthority = '';
|
||
|
|
if ($this->iuserinfo !== null) {
|
||
|
|
$iauthority .= $this->iuserinfo . '@';
|
||
|
|
}
|
||
|
|
if ($this->ihost !== null) {
|
||
|
|
$iauthority .= $this->ihost;
|
||
|
|
}
|
||
|
|
if ($this->port !== null) {
|
||
|
|
$iauthority .= ':' . $this->port;
|
||
|
|
}
|
||
|
|
return $iauthority;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the complete authority
|
||
|
|
*
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function get_authority() {
|
||
|
|
$iauthority = $this->get_iauthority();
|
||
|
|
if (is_string($iauthority)) {
|
||
|
|
return $this->to_uri($iauthority);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
return $iauthority;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|