forked from blallo/rss-bridge
300b8bba9b
Remove a bunch of useless html node properties Bypass all l.php facebook link redirections Restore <u> and <i> basic formatting
127 lines
4.5 KiB
PHP
127 lines
4.5 KiB
PHP
<?php
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/**
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* @name Facebook
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* @homepage http://facebook.com/
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* @description Input a page title or a profile log. For a profile log, please insert the parameter as follow : myExamplePage/132621766841117
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* @update 23/10/2015
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* @maintainer teromene
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* @use1(u="username")
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*/
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class FacebookBridge extends BridgeAbstract{
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private $name;
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public function collectData(array $param){
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//Extract a string using start and end delimiters
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function ExtractFromDelimiters($string, $start, $end) {
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if (strpos($string, $start) !== false) {
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$section_retrieved = substr($string, strpos($string, $start) + strlen($start));
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$section_retrieved = substr($section_retrieved, 0, strpos($section_retrieved, $end));
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return $section_retrieved;
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} return false;
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}
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//Utility function for cleaning a Facebook link
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$unescape_fb_link = function ($matches) {
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if (is_array($matches) && count($matches) > 1) {
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$link = $matches[1];
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if (strpos($link, '/') === 0)
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$link = 'https://facebook.com'.$link.'"';
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if (strpos($link, 'facebook.com/l.php?u=') !== false)
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$link = urldecode(ExtractFromDelimiters($link, 'facebook.com/l.php?u=', '&'));
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return ' href="'.$link.'"';
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}
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};
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$html = '';
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if(isset($param['u'])) {
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if(!strpos($param['u'], "/")) {
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$html = file_get_html('https://facebook.com/'.urlencode($param['u']).'?_fb_noscript=1') or $this->returnError('No results for this query.', 404);
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} else {
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$html = file_get_html('https://facebook.com/pages/'.$param['u'].'?_fb_noscript=1') or $this->returnError('No results for this query.', 404);
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}
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} else {
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$this->returnError('You must specify a Facebook username.', 400);
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}
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$element = $html->find('[id^=PagePostsSectionPagelet-]')[0]->children(0)->children(0);
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if(isset($element)) {
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$author = str_replace(' | Facebook', '', $html->find('title#pageTitle', 0)->innertext);
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$profilePic = 'https://graph.facebook.com/'.$param['u'].'/picture?width=200&height=200';
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$this->name = $author;
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foreach($element->children() as $post) {
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$item = new \Item();
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if($post->hasAttribute("data-time")) {
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//Retrieve post contents
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$content = preg_replace('/(?i)><div class=\"clearfix([^>]+)>(.+?)div\ class=\"userContent\"/i', '', $post);
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$content = preg_replace('/(?i)><div class=\"_59tj([^>]+)>(.+?)<\/div><\/div><a/i', '', $content);
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$content = preg_replace('/(?i)><div class=\"_3dp([^>]+)>(.+?)div\ class=\"[^u]+userContent\"/i', '', $content);
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$content = preg_replace('/(?i)><div class=\"_4l5([^>]+)>(.+?)<\/div>/i', '', $content);
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//Remove html nodes, keep only img, links, basic formatting
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$content = strip_tags($content,'<a><img><i><u>');
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//Adapt link hrefs: convert relative links into absolute links and bypass external link redirection
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$content = preg_replace_callback('/ href=\"([^"]+)\"/i', $unescape_fb_link, $content);
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//Clean useless html tag properties and fix link closing tags
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foreach (array('onmouseover', 'onclick', 'target', 'ajaxify', 'tabindex',
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'class', 'style', 'data-[^=]*', 'aria-[^=]*', 'role', 'rel', 'id') as $property_name)
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$content = preg_replace('/ '.$property_name.'=\"[^"]*\"/i', '', $content);
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$content = preg_replace('/<\/a [^>]+>/i', '</a>', $content);
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//Retrieve date of the post
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$date = $post->find("abbr")[0];
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if(isset($date) && $date->hasAttribute('data-utime')) {
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$date = $date->getAttribute('data-utime');
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} else {
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$date = 0;
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}
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//Build title from username and content
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$title = $author;
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if (strlen($title) > 24)
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$title = substr($title, 0, strpos(wordwrap($title, 24), "\n")).'...';
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$title = $title.' | '.strip_tags($content);
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if (strlen($title) > 64)
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$title = substr($title, 0, strpos(wordwrap($title, 64), "\n")).'...';
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//Use first image as thumbnail if available, or profile pic fallback
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$thumbnail = $post->find('img', 1)->src;
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if (strlen($thumbnail) == 0)
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$thumbnail = $profilePic;
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//Build and add final item
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$item->uri = 'https://facebook.com'.str_replace('&', '&', $post->find('abbr')[0]->parent()->getAttribute('href'));
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$item->thumbnailUri = $thumbnail;
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$item->content = $content;
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$item->title = $title;
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$item->author = $author;
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$item->timestamp = $date;
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$this->items[] = $item;
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}
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}
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}
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}
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public function getName() {
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return (isset($this->name) ? $this->name.' - ' : '').'Facebook Bridge';
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}
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public function getURI() {
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return 'http://facebook.com';
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}
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public function getCacheDuration() {
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return 300; // 5 minutes
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}
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}
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