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-rw-r--r--bridges/FB2Bridge.php281
1 files changed, 281 insertions, 0 deletions
diff --git a/bridges/FB2Bridge.php b/bridges/FB2Bridge.php
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--- /dev/null
+++ b/bridges/FB2Bridge.php
@@ -0,0 +1,281 @@
+<?php
+class FB2Bridge extends BridgeAbstract {
+
+ const MAINTAINER = 'teromene';
+ const NAME = 'Facebook Alternate';
+ const URI = 'https://www.facebook.com/';
+ const CACHE_TIMEOUT = 1000;
+ const DESCRIPTION = 'Input a page title or a profile log. For a profile log,
+ please insert the parameter as follow : myExamplePage/132621766841117';
+
+ const PARAMETERS = array( array(
+ 'u' => array(
+ 'name' => 'Username',
+ 'required' => true
+ )
+ ));
+
+ public function collectData(){
+
+ function extractFromDelimiters($string, $start, $end){
+ if(strpos($string, $start) !== false) {
+ $section_retrieved = substr($string, strpos($string, $start) + strlen($start));
+ $section_retrieved = substr($section_retrieved, 0, strpos($section_retrieved, $end));
+ return $section_retrieved;
+ }
+
+ return false;
+ }
+
+ //Utility function for cleaning a Facebook link
+ $unescape_fb_link = function($matches){
+ if(is_array($matches) && count($matches) > 1) {
+ $link = $matches[1];
+ if(strpos($link, '/') === 0)
+ $link = self::URI . $link . '"';
+ if(strpos($link, 'facebook.com/l.php?u=') !== false)
+ $link = urldecode(extractFromDelimiters($link, 'facebook.com/l.php?u=', '&'));
+ return ' href="' . $link . '"';
+ }
+ };
+
+ //Utility function for converting facebook emoticons
+ $unescape_fb_emote = function($matches){
+ static $facebook_emoticons = array(
+ 'smile' => ':)',
+ 'frown' => ':(',
+ 'tongue' => ':P',
+ 'grin' => ':D',
+ 'gasp' => ':O',
+ 'wink' => ';)',
+ 'pacman' => ':<',
+ 'grumpy' => '>_<',
+ 'unsure' => ':/',
+ 'cry' => ':\'(',
+ 'kiki' => '^_^',
+ 'glasses' => '8-)',
+ 'sunglasses' => 'B-)',
+ 'heart' => '<3',
+ 'devil' => ']:D',
+ 'angel' => '0:)',
+ 'squint' => '-_-',
+ 'confused' => 'o_O',
+ 'upset' => 'xD',
+ 'colonthree' => ':3',
+ 'like' => '&#x1F44D;');
+ $len = count($matches);
+ if ($len > 1)
+ for ($i = 1; $i < $len; $i++)
+ foreach ($facebook_emoticons as $name => $emote)
+ if ($matches[$i] === $name)
+ return $emote;
+ return $matches[0];
+ };
+
+ if($this->getInput('u') !== null) {
+ $page = 'https://touch.facebook.com/' . $this->getInput('u');
+ $cookies = $this->getCookies($page);
+ $pageID = $this->getPageID($page, $cookies);
+
+ if($pageID === null) {
+ echo <<<EOD
+Unable to get the page id. You should consider getting the ID by hand, then importing it into FB2Bridge
+EOD;
+ die();
+ } elseif($pageID == -1) {
+ echo <<<EOD
+This page is not accessible without being logged in.
+EOD;
+ die();
+ }
+ }
+
+ //Build the string for the first request
+ $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';
+
+ $fileContent = file_get_contents($requestString);
+
+ $articleIndex = 0;
+ $maxArticle = 3;
+
+ $html = $this->buildContent($fileContent);
+ $author = $this->getInput('u');
+
+ foreach($html->find("article") as $content) {
+
+ $item = array();
+
+ $item['uri'] = "http://touch.facebook.com"
+ . $content->find("div[class='_52jc _5qc4 _24u0 _36xo']", 0)->find("a", 0)->getAttribute("href");
+
+ if($content->find("header", 0) !== null) {
+ $content->find("header", 0)->innertext = "";
+ }
+
+ if($content->find("footer", 0) !== null) {
+ $content->find("footer", 0)->innertext = "";
+ }
+
+ //Remove html nodes, keep only img, links, basic formatting
+ $content = strip_tags($content, '<a><img><i><u><br><p>');
+
+ //Adapt link hrefs: convert relative links into absolute links and bypass external link redirection
+ $content = preg_replace_callback('/ href=\"([^"]+)\"/i', $unescape_fb_link, $content);
+
+ //Clean useless html tag properties and fix link closing tags
+ foreach (array(
+ 'onmouseover',
+ 'onclick',
+ 'target',
+ 'ajaxify',
+ 'tabindex',
+ 'class',
+ 'style',
+ 'data-[^=]*',
+ 'aria-[^=]*',
+ 'role',
+ 'rel',
+ 'id') as $property_name)
+ $content = preg_replace('/ ' . $property_name . '=\"[^"]*\"/i', '', $content);
+ $content = preg_replace('/<\/a [^>]+>/i', '</a>', $content);
+
+ //Convert textual representation of emoticons eg
+ // "<i><u>smile emoticon</u></i>" back to ASCII emoticons eg ":)"
+ $content = preg_replace_callback('/<i><u>([^ <>]+) ([^<>]+)<\/u><\/i>/i', $unescape_fb_emote, $content);
+
+ $item['content'] = $content;
+
+ $title = $author;
+ if (strlen($title) > 24)
+ $title = substr($title, 0, strpos(wordwrap($title, 24), "\n")) . '...';
+ $title = $title . ' | ' . strip_tags($content);
+ if (strlen($title) > 64)
+ $title = substr($title, 0, strpos(wordwrap($title, 64), "\n")) . '...';
+
+ $item['title'] = $title;
+ $item['author'] = $author;
+
+ array_push($this->items, $item);
+ }
+ }
+
+
+ // Currently not used. Is used to get more than only 3 elements, as they appear on another page.
+ private function computeNextLink($string, $pageID){
+
+ $regex = implode(
+ '',
+ array(
+ "/timeline_unit",
+ "\\\\\\\\u00253A1",
+ "\\\\\\\\u00253A([0-9]*)",
+ "\\\\\\\\u00253A([0-9]*)",
+ "\\\\\\\\u00253A([0-9]*)",
+ "\\\\\\\\u00253A([0-9]*)/"
+ )
+ );
+
+ preg_match($regex, $string, $result);
+
+ return implode(
+ '',
+ array(
+ "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",
+ $result[4],
+ "%22%2C%22timeline_section_cursor%22%3A%7B%7D%2C%22",
+ "has_next_page%22%3Atrue%7D&surface=mobile_page_home&unit_count=3"
+ )
+ );
+ }
+
+ //Builds the HTML from the encoded JS that Facebook provides.
+ private function buildContent($pageContent){
+
+ $regex = "/\\\"html\\\":\\\"(.*?)\\\",\\\"replace/";
+ preg_match($regex, $pageContent, $result);
+
+ return str_get_html(html_entity_decode(json_decode('"' . $result[1] . '"')));
+ }
+
+
+ //Builds the cookie from the page, as Facebook sometimes refuses to give
+ //the page if no cookie is provided.
+ private function getCookies($pageURL){
+
+ $ctx = stream_context_create(array(
+ 'http' => array(
+ 'user_agent' => "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:46.0) Gecko/20100101 Firefox/46.0",
+ 'Accept' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'
+ )
+ )
+ );
+ $a = file_get_contents($pageURL, 0, $ctx);
+
+ //First request to get the cookie
+ $cookies = "";
+ foreach($http_response_header as $hdr) {
+ if(strpos($hdr, "Set-Cookie") !== false) {
+ $cLine = explode(":", $hdr)[1];
+ $cLine = explode(";", $cLine)[0];
+ $cookies .= ";" . $cLine;
+ }
+ }
+
+ return substr($cookies, 1);
+ }
+
+ //Get the page ID from the Facebook page.
+ private function getPageID($page, $cookies){
+
+ $context = stream_context_create(array(
+ 'http' => array(
+ 'user_agent' => "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:46.0) Gecko/20100101 Firefox/46.0",
+ 'header' => 'Cookie: ' . $cookies
+ )
+ )
+ );
+
+ $pageContent = file_get_contents($page, 0, $context);
+
+ if(strpos($pageContent, "signup-button") != false) {
+ return -1;
+ }
+
+ //Get the page ID if we don't have a captcha
+ $regex = "/page_id=([0-9]*)&/";
+ preg_match($regex, $pageContent, $matches);
+
+ if(count($matches) > 0) {
+ return $matches[1];
+ }
+
+ //Get the page ID if we do have a captcha
+ $regex = "/\"pageID\":\"([0-9]*)\"/";
+ preg_match($regex, $pageContent, $matches);
+
+ return $matches[1];
+
+ }
+
+ public function getName(){
+ return (isset($this->name) ? $this->name . ' - ' : '') . 'Facebook Bridge';
+ }
+
+ public function getURI(){
+ return 'http://facebook.com';
+ }
+
+ public function getCacheDuration(){
+ return 60 * 60 * 3; // 5 minutes
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 01:05:27 +0000