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a72e30d847
This brings SimplePie in sync with the most up to date version, 1.5.5. This update brings many bug fixes, small enhancements, and PHP compatibility fixes for newer versions of PHP. For a full list of changes, see https://github.com/simplepie/simplepie/blob/master/CHANGELOG.md#155-may-1-2020. Props dshanske, slushman, etruel, wpshades, dmenard, desrosj, hareesh-pillai, stevenkword, jrf, Ipstenu, johnbillion. Fixes #36669. Built from https://develop.svn.wordpress.org/trunk@47733 git-svn-id: http://core.svn.wordpress.org/trunk@47509 1a063a9b-81f0-0310-95a4-ce76da25c4cd
1237 lines
28 KiB
PHP
1237 lines
28 KiB
PHP
<?php
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/**
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* SimplePie
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*
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* A PHP-Based RSS and Atom Feed Framework.
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* Takes the hard work out of managing a complete RSS/Atom solution.
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*
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* Copyright (c) 2004-2016, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
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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 modification, are
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* 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, this list of
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* conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* 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 may be used
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* to endorse or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
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* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) 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 SimplePie
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* @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
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* @author Ryan Parman
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* @author Sam Sneddon
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* @author Ryan McCue
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* @link http://simplepie.org/ SimplePie
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License
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*/
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/**
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* IRI parser/serialiser/normaliser
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*
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* @package SimplePie
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* @subpackage HTTP
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* @author Sam Sneddon
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* @author Steve Minutillo
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* @author Ryan McCue
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* @copyright 2007-2012 Sam Sneddon, Steve Minutillo, Ryan McCue
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* @license http://www.opensource.org/licenses/bsd-license.php
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*/
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class SimplePie_IRI
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{
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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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'ipath' => '/'
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),
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'https' => array(
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'port' => 443,
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'ipath' => '/'
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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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{
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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, $value)
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{
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if (method_exists($this, 'set_' . $name))
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{
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call_user_func(array($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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|| $name === 'ifragment'
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)
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{
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call_user_func(array($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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{
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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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{
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$return = $this->{"get_$name"}();
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}
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elseif (array_key_exists($name, $props))
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{
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$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, $props))
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{
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$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, $props))
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{
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$name = $prop;
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$return = $this->$prop;
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}
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else
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{
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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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{
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return $this->normalization[$this->scheme][$name];
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}
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return $return;
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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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{
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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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{
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if (method_exists($this, 'set_' . $name))
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{
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call_user_func(array($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 $iri
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*/
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public function __construct($iri = null)
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{
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$this->set_iri($iri);
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}
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/**
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* Clean up
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*/
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public function __destruct() {
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$this->set_iri(null, true);
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$this->set_path(null, true);
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$this->set_authority(null, true);
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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, $relative)
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{
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if (!($relative instanceof SimplePie_IRI))
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{
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$relative = new SimplePie_IRI($relative);
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}
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if (!$relative->is_valid())
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{
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return false;
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}
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elseif ($relative->scheme !== null)
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{
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return clone $relative;
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}
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else
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{
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if (!($base instanceof SimplePie_IRI))
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{
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$base = new SimplePie_IRI($base);
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}
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if ($base->scheme !== null && $base->is_valid())
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{
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if ($relative->get_iri() !== '')
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{
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if ($relative->iuserinfo !== null || $relative->ihost !== null || $relative->port !== null)
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{
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$target = clone $relative;
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$target->scheme = $base->scheme;
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}
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else
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{
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$target = new SimplePie_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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{
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if ($relative->ipath[0] === '/')
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{
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$target->ipath = $relative->ipath;
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}
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elseif (($base->iuserinfo !== null || $base->ihost !== null || $base->port !== null) && $base->ipath === '')
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{
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$target->ipath = '/' . $relative->ipath;
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}
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elseif (($last_segment = strrpos($base->ipath, '/')) !== false)
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{
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$target->ipath = substr($base->ipath, 0, $last_segment + 1) . $relative->ipath;
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}
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else
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{
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$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 = $relative->iquery;
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}
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else
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{
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$target->ipath = $base->ipath;
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if ($relative->iquery !== null)
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{
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$target->iquery = $relative->iquery;
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}
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elseif ($base->iquery !== null)
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{
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$target->iquery = $base->iquery;
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}
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}
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$target->ifragment = $relative->ifragment;
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}
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}
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else
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{
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$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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return false;
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}
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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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{
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$iri = trim($iri, "\x20\x09\x0A\x0C\x0D");
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if (preg_match('/^((?P<scheme>[^:\/?#]+):)?(\/\/(?P<authority>[^\/?#]*))?(?P<path>[^?#]*)(\?(?P<query>[^#]*))?(#(?P<fragment>.*))?$/', $iri, $match))
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{
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if ($match[1] === '')
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{
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$match['scheme'] = null;
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}
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if (!isset($match[3]) || $match[3] === '')
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{
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$match['authority'] = null;
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}
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if (!isset($match[5]))
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{
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$match['path'] = '';
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}
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if (!isset($match[6]) || $match[6] === '')
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{
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$match['query'] = null;
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}
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if (!isset($match[8]) || $match[8] === '')
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{
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$match['fragment'] = null;
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}
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return $match;
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}
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// This can occur when a paragraph is accidentally parsed as a URI
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return false;
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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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* @param string $input
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* @return string
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*/
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protected function remove_dot_segments($input)
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{
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$output = '';
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while (strpos($input, './') !== false || strpos($input, '/.') !== false || $input === '.' || $input === '..')
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{
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// A: If the input buffer begins with a prefix of "../" or "./", then remove that prefix from the input buffer; otherwise,
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if (strpos($input, '../') === 0)
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{
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$input = substr($input, 3);
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}
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elseif (strpos($input, './') === 0)
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{
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$input = substr($input, 2);
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}
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// B: if the input buffer begins with a prefix of "/./" or "/.", where "." is a complete path segment, then replace that prefix with "/" in the input buffer; otherwise,
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elseif (strpos($input, '/./') === 0)
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{
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$input = substr($input, 2);
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}
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elseif ($input === '/.')
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{
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$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,
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elseif (strpos($input, '/../') === 0)
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{
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$input = substr($input, 3);
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$output = substr_replace($output, '', strrpos($output, '/'));
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}
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elseif ($input === '/..')
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{
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$input = '/';
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$output = substr_replace($output, '', strrpos($output, '/'));
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}
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// D: if the input buffer consists only of "." or "..", then remove that from the input buffer; otherwise,
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elseif ($input === '.' || $input === '..')
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{
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$input = '';
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}
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// 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
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elseif (($pos = strpos($input, '/', 1)) !== false)
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{
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$output .= substr($input, 0, $pos);
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$input = substr_replace($input, '', 0, $pos);
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}
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else
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{
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$output .= $input;
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$input = '';
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}
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}
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return $output . $input;
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}
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|
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/**
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* Replace invalid character with percent encoding
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*
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* @param string $string Input string
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* @param string $extra_chars Valid characters not in iunreserved or
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* iprivate (this is ASCII-only)
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* @param bool $iprivate Allow iprivate
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* @return string
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*/
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protected function replace_invalid_with_pct_encoding($string, $extra_chars, $iprivate = false)
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{
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// Normalize as many pct-encoded sections as possible
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$string = preg_replace_callback('/(?:%[A-Fa-f0-9]{2})+/', array($this, 'remove_iunreserved_percent_encoded'), $string);
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|
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// Replace invalid percent characters
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$string = preg_replace('/%(?![A-Fa-f0-9]{2})/', '%25', $string);
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|
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// Add unreserved and % to $extra_chars (the latter is safe because all
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// pct-encoded sections are now valid).
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$extra_chars .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~%';
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|
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// Now replace any bytes that aren't allowed with their pct-encoded versions
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$position = 0;
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$strlen = strlen($string);
|
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while (($position += strspn($string, $extra_chars, $position)) < $strlen)
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{
|
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$value = ord($string[$position]);
|
|
|
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// Start position
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$start = $position;
|
|
|
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// By default we are valid
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$valid = true;
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|
|
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// No one byte sequences are valid due to the while.
|
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// Two byte sequence:
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if (($value & 0xE0) === 0xC0)
|
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{
|
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$character = ($value & 0x1F) << 6;
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$length = 2;
|
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$remaining = 1;
|
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}
|
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// Three byte sequence:
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elseif (($value & 0xF0) === 0xE0)
|
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{
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$character = ($value & 0x0F) << 12;
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$length = 3;
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$remaining = 2;
|
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}
|
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// Four byte sequence:
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elseif (($value & 0xF8) === 0xF0)
|
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{
|
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$character = ($value & 0x07) << 18;
|
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$length = 4;
|
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$remaining = 3;
|
|
}
|
|
// Invalid byte:
|
|
else
|
|
{
|
|
$valid = false;
|
|
$length = 1;
|
|
$remaining = 0;
|
|
}
|
|
|
|
if ($remaining)
|
|
{
|
|
if ($position + $length <= $strlen)
|
|
{
|
|
for ($position++; $remaining; $position++)
|
|
{
|
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$value = ord($string[$position]);
|
|
|
|
// Check that the byte is valid, then add it to the character:
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|
if (($value & 0xC0) === 0x80)
|
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{
|
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$character |= ($value & 0x3F) << (--$remaining * 6);
|
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}
|
|
// If it is invalid, count the sequence as invalid and reprocess the current byte:
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else
|
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{
|
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$valid = false;
|
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$position--;
|
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break;
|
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}
|
|
}
|
|
}
|
|
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->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'])
|
|
{
|
|
$this->ifragment = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if the object represents a valid IRI. This needs to be done on each
|
|
* call as some things change depending on another part of the IRI.
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function is_valid()
|
|
{
|
|
if ($this->ipath === '') return true;
|
|
|
|
$isauthority = $this->iuserinfo !== null || $this->ihost !== null ||
|
|
$this->port !== null;
|
|
if ($isauthority && $this->ipath[0] === '/') return true;
|
|
|
|
if (!$isauthority && (substr($this->ipath, 0, 2) === '//')) return false;
|
|
|
|
// Relative urls cannot have a colon in the first path segment (and the
|
|
// slashes themselves are not included so skip the first character).
|
|
if (!$this->scheme && !$isauthority &&
|
|
strpos($this->ipath, ':') !== false &&
|
|
strpos($this->ipath, '/', 1) !== false &&
|
|
strpos($this->ipath, ':') < strpos($this->ipath, '/', 1)) return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Set the entire IRI. Returns true on success, false on failure (if there
|
|
* are any invalid characters).
|
|
*
|
|
* @param string $iri
|
|
* @return bool
|
|
*/
|
|
public function set_iri($iri, $clear_cache = false)
|
|
{
|
|
static $cache;
|
|
if ($clear_cache)
|
|
{
|
|
$cache = null;
|
|
return;
|
|
}
|
|
if (!$cache)
|
|
{
|
|
$cache = array();
|
|
}
|
|
|
|
if ($iri === null)
|
|
{
|
|
return true;
|
|
}
|
|
elseif (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) $iri);
|
|
if (!$parsed)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
$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 $scheme
|
|
* @return bool
|
|
*/
|
|
public function set_scheme($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 $authority
|
|
* @return bool
|
|
*/
|
|
public function set_authority($authority, $clear_cache = false)
|
|
{
|
|
static $cache;
|
|
if ($clear_cache)
|
|
{
|
|
$cache = null;
|
|
return;
|
|
}
|
|
if (!$cache)
|
|
$cache = array();
|
|
|
|
if ($authority === null)
|
|
{
|
|
$this->iuserinfo = null;
|
|
$this->ihost = null;
|
|
$this->port = null;
|
|
return true;
|
|
}
|
|
elseif (isset($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)
|
|
{
|
|
if (($port = substr($remaining, $port_start + 1)) === false)
|
|
{
|
|
$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 $iuserinfo
|
|
* @return bool
|
|
*/
|
|
public function set_userinfo($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 $ihost
|
|
* @return bool
|
|
*/
|
|
public function set_host($ihost)
|
|
{
|
|
if ($ihost === null)
|
|
{
|
|
$this->ihost = null;
|
|
return true;
|
|
}
|
|
elseif (substr($ihost, 0, 1) === '[' && substr($ihost, -1) === ']')
|
|
{
|
|
if (SimplePie_Net_IPv6::check_ipv6(substr($ihost, 1, -1)))
|
|
{
|
|
$this->ihost = '[' . SimplePie_Net_IPv6::compress(substr($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 $port
|
|
* @return bool
|
|
*/
|
|
public function set_port($port)
|
|
{
|
|
if ($port === null)
|
|
{
|
|
$this->port = null;
|
|
return true;
|
|
}
|
|
elseif (strspn($port, '0123456789') === strlen($port))
|
|
{
|
|
$this->port = (int) $port;
|
|
$this->scheme_normalization();
|
|
return true;
|
|
}
|
|
|
|
$this->port = null;
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Set the ipath.
|
|
*
|
|
* @param string $ipath
|
|
* @return bool
|
|
*/
|
|
public function set_path($ipath, $clear_cache = false)
|
|
{
|
|
static $cache;
|
|
if ($clear_cache)
|
|
{
|
|
$cache = null;
|
|
return;
|
|
}
|
|
if (!$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 $iquery
|
|
* @return bool
|
|
*/
|
|
public function set_query($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 $ifragment
|
|
* @return bool
|
|
*/
|
|
public function set_fragment($ifragment)
|
|
{
|
|
if ($ifragment === null)
|
|
{
|
|
$this->ifragment = null;
|
|
}
|
|
else
|
|
{
|
|
$this->ifragment = $this->replace_invalid_with_pct_encoding($ifragment, '!$&\'()*+,;=:@/?');
|
|
$this->scheme_normalization();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Convert an IRI to a URI (or parts thereof)
|
|
*
|
|
* @return string
|
|
*/
|
|
public function to_uri($string)
|
|
{
|
|
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 $string;
|
|
}
|
|
|
|
/**
|
|
* Get the complete IRI
|
|
*
|
|
* @return string
|
|
*/
|
|
public function get_iri()
|
|
{
|
|
if (!$this->is_valid())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
$iri = '';
|
|
if ($this->scheme !== null)
|
|
{
|
|
$iri .= $this->scheme . ':';
|
|
}
|
|
if (($iauthority = $this->get_iauthority()) !== null)
|
|
{
|
|
$iri .= '//' . $iauthority;
|
|
}
|
|
if ($this->ipath !== '')
|
|
{
|
|
$iri .= $this->ipath;
|
|
}
|
|
elseif (!empty($this->normalization[$this->scheme]['ipath']) && $iauthority !== null && $iauthority !== '')
|
|
{
|
|
$iri .= $this->normalization[$this->scheme]['ipath'];
|
|
}
|
|
if ($this->iquery !== null)
|
|
{
|
|
$iri .= '?' . $this->iquery;
|
|
}
|
|
if ($this->ifragment !== null)
|
|
{
|
|
$iri .= '#' . $this->ifragment;
|
|
}
|
|
|
|
return $iri;
|
|
}
|
|
|
|
/**
|
|
* Get the complete URI
|
|
*
|
|
* @return string
|
|
*/
|
|
public 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)
|
|
{
|
|
$iauthority = '';
|
|
if ($this->iuserinfo !== null)
|
|
{
|
|
$iauthority .= $this->iuserinfo . '@';
|
|
}
|
|
if ($this->ihost !== null)
|
|
{
|
|
$iauthority .= $this->ihost;
|
|
}
|
|
if ($this->port !== null && $this->port !== 0)
|
|
{
|
|
$iauthority .= ':' . $this->port;
|
|
}
|
|
return $iauthority;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Get the complete authority
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function get_authority()
|
|
{
|
|
$iauthority = $this->get_iauthority();
|
|
if (is_string($iauthority))
|
|
return $this->to_uri($iauthority);
|
|
|
|
return $iauthority;
|
|
}
|
|
}
|