From 9bf74b2715159010da57d8ded8a1faf3737e581f Mon Sep 17 00:00:00 2001 From: Teromene Date: Wed, 8 Feb 2017 11:21:59 +0000 Subject: [PATCH] Added the alternate facebook bridge. --- bridges/FB2Bridge.php | 234 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 234 insertions(+) create mode 100644 bridges/FB2Bridge.php diff --git a/bridges/FB2Bridge.php b/bridges/FB2Bridge.php new file mode 100644 index 0000000..081e96e --- /dev/null +++ b/bridges/FB2Bridge.php @@ -0,0 +1,234 @@ +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' => '👍'); + $len = count($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 "Unable to get the page id. You should consider getting the ID by hand, then importing it into FB2Bridge"; + 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._52jc", 0)->find("a", 0)->getAttribute("href"); + + $content->find("header", 0)->innertext = ""; + $content->find("footer", 0)->innertext = ""; + + //Remove html nodes, keep only img, links, basic formatting + $content = strip_tags($content,'

'); + + //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', '', $content); + + //Convert textual representation of emoticons eg "smile emoticon" back to ASCII emoticons eg ":)" + $content = preg_replace_callback('/([^ <>]+) ([^<>]+)<\/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) { + + $regex = "/timeline_unit\\\\\\\\u00253A1\\\\\\\\u00253A([0-9]*)\\\\\\\\u00253A([0-9]*)\\\\\\\\u00253A([0-9]*)\\\\\\\\u00253A([0-9]*)/"; + preg_match($regex, $string, $result); + + return "https://touch.facebook.com/pages_reaction_units/more/?page_id=".$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"; + + + } + + //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); + + //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 + } +}