mirror of
https://github.com/wallabag/wallabag.git
synced 2024-12-05 15:26:27 +00:00
315 lines
9.7 KiB
PHP
315 lines
9.7 KiB
PHP
|
<?php
|
||
|
/**
|
||
|
* SimplePie
|
||
|
*
|
||
|
* A PHP-Based RSS and Atom Feed Framework.
|
||
|
* Takes the hard work out of managing a complete RSS/Atom solution.
|
||
|
*
|
||
|
* Copyright (c) 2004-2009, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
|
||
|
* All rights reserved.
|
||
|
*
|
||
|
* Redistribution and use in source and binary forms, with or without modification, are
|
||
|
* permitted provided that the following conditions are met:
|
||
|
*
|
||
|
* * Redistributions of source code must retain the above copyright notice, this list of
|
||
|
* conditions and the following disclaimer.
|
||
|
*
|
||
|
* * Redistributions in binary form must reproduce the above copyright notice, this list
|
||
|
* of conditions and the following disclaimer in the documentation and/or other materials
|
||
|
* provided with the distribution.
|
||
|
*
|
||
|
* * Neither the name of the SimplePie Team nor the names of its contributors may be used
|
||
|
* to endorse or promote products derived from this software without specific prior
|
||
|
* written permission.
|
||
|
*
|
||
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
|
||
|
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
||
|
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
|
||
|
* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
|
* POSSIBILITY OF SUCH DAMAGE.
|
||
|
*
|
||
|
* @package SimplePie
|
||
|
* @version 1.3-dev
|
||
|
* @copyright 2004-2010 Ryan Parman, Geoffrey Sneddon, Ryan McCue
|
||
|
* @author Ryan Parman
|
||
|
* @author Geoffrey Sneddon
|
||
|
* @author Ryan McCue
|
||
|
* @link http://simplepie.org/ SimplePie
|
||
|
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
|
||
|
* @todo phpDoc comments
|
||
|
*/
|
||
|
|
||
|
|
||
|
class SimplePie_Locator
|
||
|
{
|
||
|
var $useragent;
|
||
|
var $timeout;
|
||
|
var $file;
|
||
|
var $local = array();
|
||
|
var $elsewhere = array();
|
||
|
var $file_class = 'SimplePie_File';
|
||
|
var $cached_entities = array();
|
||
|
var $http_base;
|
||
|
var $base;
|
||
|
var $base_location = 0;
|
||
|
var $checked_feeds = 0;
|
||
|
var $max_checked_feeds = 10;
|
||
|
var $content_type_sniffer_class = 'SimplePie_Content_Type_Sniffer';
|
||
|
|
||
|
public function __construct(&$file, $timeout = 10, $useragent = null, $file_class = 'SimplePie_File', $max_checked_feeds = 10, $content_type_sniffer_class = 'SimplePie_Content_Type_Sniffer')
|
||
|
{
|
||
|
$this->file =& $file;
|
||
|
$this->file_class = $file_class;
|
||
|
$this->useragent = $useragent;
|
||
|
$this->timeout = $timeout;
|
||
|
$this->max_checked_feeds = $max_checked_feeds;
|
||
|
$this->content_type_sniffer_class = $content_type_sniffer_class;
|
||
|
}
|
||
|
|
||
|
public function find($type = SIMPLEPIE_LOCATOR_ALL, &$working)
|
||
|
{
|
||
|
if ($this->is_feed($this->file))
|
||
|
{
|
||
|
return $this->file;
|
||
|
}
|
||
|
|
||
|
if ($this->file->method & SIMPLEPIE_FILE_SOURCE_REMOTE)
|
||
|
{
|
||
|
$sniffer = new $this->content_type_sniffer_class($this->file);
|
||
|
if ($sniffer->get_type() !== 'text/html')
|
||
|
{
|
||
|
return null;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if ($type & ~SIMPLEPIE_LOCATOR_NONE)
|
||
|
{
|
||
|
$this->get_base();
|
||
|
}
|
||
|
|
||
|
if ($type & SIMPLEPIE_LOCATOR_AUTODISCOVERY && $working = $this->autodiscovery())
|
||
|
{
|
||
|
return $working[0];
|
||
|
}
|
||
|
|
||
|
if ($type & (SIMPLEPIE_LOCATOR_LOCAL_EXTENSION | SIMPLEPIE_LOCATOR_LOCAL_BODY | SIMPLEPIE_LOCATOR_REMOTE_EXTENSION | SIMPLEPIE_LOCATOR_REMOTE_BODY) && $this->get_links())
|
||
|
{
|
||
|
if ($type & SIMPLEPIE_LOCATOR_LOCAL_EXTENSION && $working = $this->extension($this->local))
|
||
|
{
|
||
|
return $working;
|
||
|
}
|
||
|
|
||
|
if ($type & SIMPLEPIE_LOCATOR_LOCAL_BODY && $working = $this->body($this->local))
|
||
|
{
|
||
|
return $working;
|
||
|
}
|
||
|
|
||
|
if ($type & SIMPLEPIE_LOCATOR_REMOTE_EXTENSION && $working = $this->extension($this->elsewhere))
|
||
|
{
|
||
|
return $working;
|
||
|
}
|
||
|
|
||
|
if ($type & SIMPLEPIE_LOCATOR_REMOTE_BODY && $working = $this->body($this->elsewhere))
|
||
|
{
|
||
|
return $working;
|
||
|
}
|
||
|
}
|
||
|
return null;
|
||
|
}
|
||
|
|
||
|
public function is_feed(&$file)
|
||
|
{
|
||
|
if ($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE)
|
||
|
{
|
||
|
$sniffer = new $this->content_type_sniffer_class($file);
|
||
|
$sniffed = $sniffer->get_type();
|
||
|
if (in_array($sniffed, array('application/rss+xml', 'application/rdf+xml', 'text/rdf', 'application/atom+xml', 'text/xml', 'application/xml')))
|
||
|
{
|
||
|
return true;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
}
|
||
|
elseif ($file->method & SIMPLEPIE_FILE_SOURCE_LOCAL)
|
||
|
{
|
||
|
return true;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
public function get_base()
|
||
|
{
|
||
|
$this->http_base = $this->file->url;
|
||
|
$this->base = $this->http_base;
|
||
|
$elements = SimplePie_Misc::get_element('base', $this->file->body);
|
||
|
foreach ($elements as $element)
|
||
|
{
|
||
|
if ($element['attribs']['href']['data'] !== '')
|
||
|
{
|
||
|
$this->base = SimplePie_Misc::absolutize_url(trim($element['attribs']['href']['data']), $this->http_base);
|
||
|
$this->base_location = $element['offset'];
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
public function autodiscovery()
|
||
|
{
|
||
|
$links = array_merge(SimplePie_Misc::get_element('link', $this->file->body), SimplePie_Misc::get_element('a', $this->file->body), SimplePie_Misc::get_element('area', $this->file->body));
|
||
|
$done = array();
|
||
|
$feeds = array();
|
||
|
foreach ($links as $link)
|
||
|
{
|
||
|
if ($this->checked_feeds === $this->max_checked_feeds)
|
||
|
{
|
||
|
break;
|
||
|
}
|
||
|
if (isset($link['attribs']['href']['data']) && isset($link['attribs']['rel']['data']))
|
||
|
{
|
||
|
$rel = array_unique(SimplePie_Misc::space_seperated_tokens(strtolower($link['attribs']['rel']['data'])));
|
||
|
|
||
|
if ($this->base_location < $link['offset'])
|
||
|
{
|
||
|
$href = SimplePie_Misc::absolutize_url(trim($link['attribs']['href']['data']), $this->base);
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
$href = SimplePie_Misc::absolutize_url(trim($link['attribs']['href']['data']), $this->http_base);
|
||
|
}
|
||
|
|
||
|
if (!in_array($href, $done) && in_array('feed', $rel) || (in_array('alternate', $rel) && !in_array('stylesheet', $rel) && !empty($link['attribs']['type']['data']) && in_array(strtolower(SimplePie_Misc::parse_mime($link['attribs']['type']['data'])), array('application/rss+xml', 'application/atom+xml'))) && !isset($feeds[$href]))
|
||
|
{
|
||
|
$this->checked_feeds++;
|
||
|
$headers = array(
|
||
|
'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
|
||
|
);
|
||
|
$feed = new $this->file_class($href, $this->timeout, 5, $headers, $this->useragent);
|
||
|
if ($feed->success && ($feed->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($feed->status_code === 200 || $feed->status_code > 206 && $feed->status_code < 300)) && $this->is_feed($feed))
|
||
|
{
|
||
|
$feeds[$href] = $feed;
|
||
|
}
|
||
|
}
|
||
|
$done[] = $href;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (!empty($feeds))
|
||
|
{
|
||
|
return array_values($feeds);
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
return null;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
public function get_links()
|
||
|
{
|
||
|
$links = SimplePie_Misc::get_element('a', $this->file->body);
|
||
|
foreach ($links as $link)
|
||
|
{
|
||
|
if (isset($link['attribs']['href']['data']))
|
||
|
{
|
||
|
$href = trim($link['attribs']['href']['data']);
|
||
|
$parsed = SimplePie_Misc::parse_url($href);
|
||
|
if ($parsed['scheme'] === '' || preg_match('/^(http(s)|feed)?$/i', $parsed['scheme']))
|
||
|
{
|
||
|
if ($this->base_location < $link['offset'])
|
||
|
{
|
||
|
$href = SimplePie_Misc::absolutize_url(trim($link['attribs']['href']['data']), $this->base);
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
$href = SimplePie_Misc::absolutize_url(trim($link['attribs']['href']['data']), $this->http_base);
|
||
|
}
|
||
|
|
||
|
$current = SimplePie_Misc::parse_url($this->file->url);
|
||
|
|
||
|
if ($parsed['authority'] === '' || $parsed['authority'] === $current['authority'])
|
||
|
{
|
||
|
$this->local[] = $href;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
$this->elsewhere[] = $href;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
$this->local = array_unique($this->local);
|
||
|
$this->elsewhere = array_unique($this->elsewhere);
|
||
|
if (!empty($this->local) || !empty($this->elsewhere))
|
||
|
{
|
||
|
return true;
|
||
|
}
|
||
|
return null;
|
||
|
}
|
||
|
|
||
|
public function extension(&$array)
|
||
|
{
|
||
|
foreach ($array as $key => $value)
|
||
|
{
|
||
|
if ($this->checked_feeds === $this->max_checked_feeds)
|
||
|
{
|
||
|
break;
|
||
|
}
|
||
|
if (in_array(strtolower(strrchr($value, '.')), array('.rss', '.rdf', '.atom', '.xml')))
|
||
|
{
|
||
|
$this->checked_feeds++;
|
||
|
|
||
|
$headers = array(
|
||
|
'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
|
||
|
);
|
||
|
$feed = new $this->file_class($value, $this->timeout, 5, $headers, $this->useragent);
|
||
|
if ($feed->success && ($feed->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($feed->status_code === 200 || $feed->status_code > 206 && $feed->status_code < 300)) && $this->is_feed($feed))
|
||
|
{
|
||
|
return $feed;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
unset($array[$key]);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
return null;
|
||
|
}
|
||
|
|
||
|
public function body(&$array)
|
||
|
{
|
||
|
foreach ($array as $key => $value)
|
||
|
{
|
||
|
if ($this->checked_feeds === $this->max_checked_feeds)
|
||
|
{
|
||
|
break;
|
||
|
}
|
||
|
if (preg_match('/(rss|rdf|atom|xml)/i', $value))
|
||
|
{
|
||
|
$this->checked_feeds++;
|
||
|
$headers = array(
|
||
|
'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
|
||
|
);
|
||
|
$feed = new $this->file_class($value, $this->timeout, 5, null, $this->useragent);
|
||
|
if ($feed->success && ($feed->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($feed->status_code === 200 || $feed->status_code > 206 && $feed->status_code < 300)) && $this->is_feed($feed))
|
||
|
{
|
||
|
return $feed;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
unset($array[$key]);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
return null;
|
||
|
}
|
||
|
}
|
||
|
|