e221358ead
Previously summary posts were ignored which resulted in the last two posts not showing up in the feed (the latest two are shown in the summary post). Now summary posts are treated like regular posts, returning them as part of the regular feed. References #502, #505
275 lines
8.2 KiB
PHP
275 lines
8.2 KiB
PHP
<?php
|
|
class FacebookBridge extends BridgeAbstract {
|
|
|
|
const MAINTAINER = 'teromene';
|
|
const NAME = 'Facebook';
|
|
const URI = 'https://www.facebook.com/';
|
|
const CACHE_TIMEOUT = 300; // 5min
|
|
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
|
|
)
|
|
));
|
|
|
|
private $authorName = '';
|
|
|
|
public function collectData(){
|
|
|
|
//Extract a string using start and end delimiters
|
|
function extractFromDelimiters($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];
|
|
};
|
|
|
|
$html = null;
|
|
|
|
//Handle captcha response sent by the viewer
|
|
if (isset($_POST['captcha_response']))
|
|
{
|
|
if (session_status() == PHP_SESSION_NONE)
|
|
session_start();
|
|
if (isset($_SESSION['captcha_fields'], $_SESSION['captcha_action']))
|
|
{
|
|
$captcha_action = $_SESSION['captcha_action'];
|
|
$captcha_fields = $_SESSION['captcha_fields'];
|
|
$captcha_fields['captcha_response'] = preg_replace("/[^a-zA-Z0-9]+/", "", $_POST['captcha_response']);
|
|
$http_options = array(
|
|
'http' => array(
|
|
'method' => 'POST',
|
|
'user_agent' => ini_get('user_agent'),
|
|
'header' => array("Content-type:
|
|
application/x-www-form-urlencoded\r\nReferer: $captcha_action\r\nCookie: noscript=1\r\n"),
|
|
'content' => http_build_query($captcha_fields)
|
|
),
|
|
);
|
|
$context = stream_context_create($http_options);
|
|
$html = getContents($captcha_action, false, $context);
|
|
|
|
if($html === false){
|
|
returnServerError('Failed to submit captcha response back to Facebook');
|
|
}
|
|
unset($_SESSION['captcha_fields']);
|
|
$html = str_get_html($html);
|
|
}
|
|
unset($_SESSION['captcha_fields']);
|
|
unset($_SESSION['captcha_action']);
|
|
}
|
|
|
|
//Retrieve page contents
|
|
if(is_null($html)){
|
|
if(!strpos($this->getInput('u'), "/")){
|
|
$html = getSimpleHTMLDOM(self::URI . urlencode($this->getInput('u')) . '?_fb_noscript=1')
|
|
or returnServerError('No results for this query.');
|
|
} else {
|
|
$html = getSimpleHTMLDOM(self::URI . 'pages/' . $this->getInput('u') . '?_fb_noscript=1')
|
|
or returnServerError('No results for this query.');
|
|
}
|
|
}
|
|
|
|
//Handle captcha form?
|
|
$captcha = $html->find('div.captcha_interstitial', 0);
|
|
if (!is_null($captcha))
|
|
{
|
|
//Save form for submitting after getting captcha response
|
|
if (session_status() == PHP_SESSION_NONE)
|
|
session_start();
|
|
$captcha_fields = array();
|
|
foreach ($captcha->find('input, button') as $input)
|
|
$captcha_fields[$input->name] = $input->value;
|
|
$_SESSION['captcha_fields'] = $captcha_fields;
|
|
$_SESSION['captcha_action'] = $captcha->find('form', 0)->action;
|
|
|
|
//Show captcha filling form to the viewer, proxying the captcha image
|
|
$img = base64_encode(getContents($captcha->find('img', 0)->src));
|
|
header('HTTP/1.1 500 ' . Http::getMessageForCode(500));
|
|
header('Content-Type: text/html');
|
|
$message = <<<EOD
|
|
<form method="post" action="?{$_SERVER['QUERY_STRING']}">
|
|
<h2>Facebook captcha challenge</h2>
|
|
<p>Unfortunately, rss-bridge cannot fetch the requested page.<br />
|
|
Facebook wants rss-bridge to resolve the following captcha:</p>
|
|
<p><img src="data:image/png;base64,{$img}" /></p>
|
|
<p><b>Response:</b> <input name="captcha_response" placeholder="please fill in" />
|
|
<input type="submit" value="Submit!" /></p>
|
|
</form>
|
|
EOD;
|
|
die($message);
|
|
}
|
|
|
|
//No captcha? We can carry on retrieving page contents :)
|
|
$element = $html
|
|
->find('#pagelet_timeline_main_column')[0]
|
|
->children(0)
|
|
->children(0)
|
|
->children(0)
|
|
->next_sibling()
|
|
->children(0);
|
|
|
|
if(isset($element)){
|
|
|
|
$author = str_replace(' | Facebook', '', $html->find('title#pageTitle', 0)->innertext);
|
|
$profilePic = 'https://graph.facebook.com/'
|
|
. $this->getInput('u')
|
|
. '/picture?width=200&height=200';
|
|
|
|
$this->authorName = $author;
|
|
|
|
foreach($element->children() as $cell){
|
|
// Manage summary posts
|
|
if(strpos($cell->class, '_3xaf') !== false){
|
|
$posts = $cell->children();
|
|
} else {
|
|
$posts = array($cell);
|
|
}
|
|
|
|
foreach($posts as $post){
|
|
|
|
$item = array();
|
|
|
|
if(count($post->find('abbr')) > 0){
|
|
|
|
//Retrieve post contents
|
|
$content = preg_replace(
|
|
'/(?i)><div class=\"clearfix([^>]+)>(.+?)div\ class=\"userContent\"/i',
|
|
'',
|
|
$post);
|
|
|
|
$content = preg_replace(
|
|
'/(?i)><div class=\"_59tj([^>]+)>(.+?)<\/div><\/div><a/i',
|
|
'',
|
|
$content);
|
|
|
|
$content = preg_replace(
|
|
'/(?i)><div class=\"_3dp([^>]+)>(.+?)div\ class=\"[^u]+userContent\"/i',
|
|
'',
|
|
$content);
|
|
|
|
$content = preg_replace(
|
|
'/(?i)><div class=\"_4l5([^>]+)>(.+?)<\/div>/i',
|
|
'',
|
|
$content);
|
|
|
|
//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
|
|
);
|
|
|
|
//Retrieve date of the post
|
|
$date = $post->find("abbr")[0];
|
|
if(isset($date) && $date->hasAttribute('data-utime')){
|
|
$date = $date->getAttribute('data-utime');
|
|
} else {
|
|
$date = 0;
|
|
}
|
|
|
|
//Build title from username and 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")) . '...';
|
|
|
|
//Build and add final item
|
|
$item['uri'] = self::URI . $post->find('abbr')[0]->parent()->getAttribute('href');
|
|
$item['content'] = $content;
|
|
$item['title'] = $title;
|
|
$item['author'] = $author;
|
|
$item['timestamp'] = $date;
|
|
$this->items[] = $item;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public function getName(){
|
|
if(!empty($this->authorName)){
|
|
return isset($this->extraInfos['name']) ? $this->extraInfos['name'] : $this->authorName
|
|
. ' - Facebook Bridge';
|
|
}
|
|
|
|
return parent::getName();
|
|
}
|
|
}
|