235 lines
7 KiB
PHP
235 lines
7 KiB
PHP
<?php
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class FB2Bridge extends BridgeAbstract{
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const MAINTAINER = "teromene";
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const NAME = "Facebook Alternate";
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const URI = "https://www.facebook.com/";
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const CACHE_TIMEOUT = 1000;
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const 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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const PARAMETERS =array( array(
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'u'=>array(
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'name'=>'Username',
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'required'=>true
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)
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));
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public function collectData() {
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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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$link = self::URI.$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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//Utility function for converting facebook emoticons
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$unescape_fb_emote = function ($matches) {
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static $facebook_emoticons = array(
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'smile' => ':)',
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'frown' => ':(',
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'tongue' => ':P',
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'grin' => ':D',
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'gasp' => ':O',
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'wink' => ';)',
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'pacman' => ':<',
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'grumpy' => '>_<',
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'unsure' => ':/',
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'cry' => ':\'(',
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'kiki' => '^_^',
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'glasses' => '8-)',
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'sunglasses' => 'B-)',
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'heart' => '<3',
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'devil' => ']:D',
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'angel' => '0:)',
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'squint' => '-_-',
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'confused' => 'o_O',
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'upset' => 'xD',
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'colonthree' => ':3',
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'like' => '👍');
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$len = count($matches);
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if ($len > 1)
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for ($i = 1; $i < $len; $i++)
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foreach ($facebook_emoticons as $name => $emote)
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if ($matches[$i] === $name)
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return $emote;
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return $matches[0];
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};
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if($this->getInput('u') !== NULL) {
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$page = "https://touch.facebook.com/" . $this->getInput('u');
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$cookies = $this->getCookies($page);
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$pageID = $this->getPageID($page, $cookies);
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if($pageID === null) {
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echo "Unable to get the page id. You should consider getting the ID by hand, then importing it into FB2Bridge";
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die();
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}
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}
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//Build the string for the first request
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$requestString = "https://touch.facebook.com/pages_reaction_units/more/?page_id=" . $pageID . "&cursor={\"card_id\"%3A\"videos\"%2C\"has_next_page\"%3Atrue}&surface=mobile_page_home&unit_count=8";
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$fileContent = file_get_contents($requestString);
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$articleIndex = 0;
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$maxArticle = 3;
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$html = $this->buildContent($fileContent);
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$author = $this->getInput('u');
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foreach($html->find("article") as $content) {
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$item = array();
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$item['uri'] = "http://touch.facebook.com" . $content->find("div._52jc", 0)->find("a", 0)->getAttribute("href");
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$content->find("header", 0)->innertext = "";
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$content->find("footer", 0)->innertext = "";
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//Remove html nodes, keep only img, links, basic formatting
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$content = strip_tags($content,'<a><img><i><u><br><p>');
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//Adapt link hrefs: convert relative links into absolute links and bypass external link redirection
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$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>', $content);
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//Convert textual representation of emoticons eg "<i><u>smile emoticon</u></i>" back to ASCII emoticons eg ":)"
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$content = preg_replace_callback('/<i><u>([^ <>]+) ([^<>]+)<\/u><\/i>/i', $unescape_fb_emote, $content);
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$item['content'] = $content;
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$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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$item['title'] = $title;
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$item['author'] = $author;
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array_push($this->items, $item);
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}
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}
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// Currently not used. Is used to get more than only 3 elements, as they appear on another page.
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private function computeNextLink($string, $pageID) {
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$regex = "/timeline_unit\\\\\\\\u00253A1\\\\\\\\u00253A([0-9]*)\\\\\\\\u00253A([0-9]*)\\\\\\\\u00253A([0-9]*)\\\\\\\\u00253A([0-9]*)/";
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preg_match($regex, $string, $result);
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return "https://touch.facebook.com/pages_reaction_units/more/?page_id=".$pageID."&cursor=%7B%22timeline_cursor%22%3A%22timeline_unit%3A1%3A".$result[1]."%3A".$result[2]."%3A".$result[3]."%3A".$result[4]."%22%2C%22timeline_section_cursor%22%3A%7B%7D%2C%22has_next_page%22%3Atrue%7D&surface=mobile_page_home&unit_count=3";
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}
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//Builds the HTML from the encoded JS that Facebook provides.
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private function buildContent($pageContent) {
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$regex = "/\\\"html\\\":\\\"(.*?)\\\",\\\"replace/";
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preg_match($regex, $pageContent, $result);
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return str_get_html(html_entity_decode(json_decode('"' . $result[1] . '"')));
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}
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//Builds the cookie from the page, as Facebook sometimes refuses to give the page if no cookie is provided.
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private function getCookies($pageURL) {
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$ctx = stream_context_create(array(
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'http' => array(
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'user_agent' => "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:46.0) Gecko/20100101 Firefox/46.0",
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'Accept' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'
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)
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)
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);
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$a = file_get_contents($pageURL, 0, $ctx);
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//First request to get the cookie
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$cookies = "";
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foreach ($http_response_header as $hdr) {
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if(strpos($hdr, "Set-Cookie") !== false) {
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$cLine = explode(":", $hdr)[1];
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$cLine = explode(";", $cLine)[0];
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$cookies .= ";".$cLine;
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}
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}
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return substr($cookies, 1);
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}
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//Get the page ID from the Facebook page.
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private function getPageID($page, $cookies) {
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$context = stream_context_create(array(
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'http' => array(
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'user_agent' => "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:46.0) Gecko/20100101 Firefox/46.0",
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'header' => 'Cookie: ' .$cookies
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)
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)
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);
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$pageContent = file_get_contents($page, 0, $context);
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//Get the page ID if we don't have a captcha
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$regex = "/page_id=([0-9]*)&/";
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preg_match($regex, $pageContent, $matches);
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if(count($matches) > 0) {
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return $matches[1];
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}
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//Get the page ID if we do have a captcha
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$regex = "/\"pageID\":\"([0-9]*)\"/";
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preg_match($regex, $pageContent, $matches);
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return $matches[1];
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}
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public function getName() {
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return (isset($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 60 * 60 * 3; // 5 minutes
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}
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}
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