1 files changed, 314 insertions, 0 deletions

diff --git a/inc/3rdparty/simplepie/SimplePie/Locator.php b/inc/3rdparty/simplepie/SimplePie/Locator.php
new file mode 100644
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--- /dev/null
+++ b/inc/3rdparty/simplepie/SimplePie/Locator.php
@@ -0,0 +1,314 @@
+<?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;
+        }
+}
+