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1238 lines
28 KiB
1238 lines
28 KiB
<?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) 2004-2012, Ryan Parman, Geoffrey 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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* @version 1.4-dev |
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* @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue |
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* @author Ryan Parman |
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* @author Geoffrey 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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/** |
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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 Geoffrey Sneddon |
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* @author Steve Minutillo |
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* @author Ryan McCue |
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* @copyright 2007-2012 Geoffrey 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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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|
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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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|
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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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else |
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{ |
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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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{ |
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if (method_exists($this, 'get_' . $name) || isset($this->$name)) |
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{ |
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return true; |
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} |
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else |
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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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/** |
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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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/** |
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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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* 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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else |
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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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|
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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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else |
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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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|
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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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* 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 |
|
$string = preg_replace_callback('/(?:%[A-Fa-f0-9]{2})+/', array($this, 'remove_iunreserved_percent_encoded'), $string); |
|
|
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// Replace invalid percent characters |
|
$string = preg_replace('/%(?![A-Fa-f0-9]{2})/', '%25', $string); |
|
|
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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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// Now replace any bytes that aren't allowed with their pct-encoded versions |
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$position = 0; |
|
$strlen = strlen($string); |
|
while (($position += strspn($string, $extra_chars, $position)) < $strlen) |
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{ |
|
$value = ord($string[$position]); |
|
|
|
// Start position |
|
$start = $position; |
|
|
|
// By default we are valid |
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$valid = true; |
|
|
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// No one byte sequences are valid due to the while. |
|
// Two byte sequence: |
|
if (($value & 0xE0) === 0xC0) |
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{ |
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$character = ($value & 0x1F) << 6; |
|
$length = 2; |
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$remaining = 1; |
|
} |
|
// Three byte sequence: |
|
elseif (($value & 0xF0) === 0xE0) |
|
{ |
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$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->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 $iri |
|
* @return bool |
|
*/ |
|
public function set_iri($iri) |
|
{ |
|
static $cache; |
|
if (!$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; |
|
} |
|
else |
|
{ |
|
$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) |
|
{ |
|
static $cache; |
|
if (!$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; |
|
} |
|
else |
|
{ |
|
$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; |
|
} |
|
else |
|
{ |
|
$this->port = null; |
|
return false; |
|
} |
|
} |
|
|
|
/** |
|
* Set the ipath. |
|
* |
|
* @param string $ipath |
|
* @return bool |
|
*/ |
|
public function set_path($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 $iquery |
|
* @return bool |
|
*/ |
|
public function set_query($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) |
|
{ |
|
$iauthority .= ':' . $this->port; |
|
} |
|
return $iauthority; |
|
} |
|
else |
|
{ |
|
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); |
|
else |
|
return $iauthority; |
|
} |
|
}
|
|
|