forked from blallo/rss-bridge
232 lines
8.3 KiB
PHP
232 lines
8.3 KiB
PHP
<?php
|
|
class FacebookBridge extends BridgeAbstract{
|
|
|
|
public function loadMetadatas() {
|
|
|
|
$this->maintainer = "teromene";
|
|
$this->name = "Facebook";
|
|
$this->uri = "http://www.facebook.com/";
|
|
$this->description = "Input a page title or a profile log. For a profile log, please insert the parameter as follow : myExamplePage/132621766841117";
|
|
$this->update = "2016-08-06";
|
|
|
|
$this->parameters[] =
|
|
'[
|
|
{
|
|
"name" : "Username",
|
|
"identifier" : "u",
|
|
"required" : "required"
|
|
}
|
|
]';
|
|
}
|
|
|
|
public function collectData(array $param) {
|
|
|
|
//Extract a string using start and end delimiters
|
|
function ExtractFromDelimiters($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)
|
|
$link = 'https://www.facebook.com'.$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);
|
|
$html = file_get_contents($captcha_action, false, $context);
|
|
if ($html === FALSE) { $this->returnError('Failed to submit captcha response back to Facebook', 500); }
|
|
unset($_SESSION['captcha_fields']);
|
|
$html = str_get_html($html);
|
|
}
|
|
unset($_SESSION['captcha_fields']);
|
|
unset($_SESSION['captcha_action']);
|
|
}
|
|
|
|
//Retrieve page contents
|
|
if (is_null($html)) {
|
|
if (isset($param['u'])) {
|
|
if (!strpos($param['u'], "/")) {
|
|
$html = $this->file_get_html('https://www.facebook.com/'.urlencode($param['u']).'?_fb_noscript=1') or $this->returnError('No results for this query.', 404);
|
|
} else {
|
|
$html = $this->file_get_html('https://www.facebook.com/pages/'.$param['u'].'?_fb_noscript=1') or $this->returnError('No results for this query.', 404);
|
|
}
|
|
} else {
|
|
$this->returnError('You must specify a Facebook username.', 400);
|
|
}
|
|
}
|
|
|
|
//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;
|
|
$_SESSION['captcha_action'] = 'https://www.facebook.com'.$captcha->find('form', 0)->action;
|
|
|
|
//Show captcha filling form to the viewer, proxying the captcha image
|
|
$img = base64_encode(file_get_contents($captcha->find('img', 0)->src));
|
|
header('HTTP/1.1 500 '.Http::getMessageForCode(500));
|
|
header('Content-Type: text/html');
|
|
die('<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>');
|
|
}
|
|
|
|
//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);
|
|
$profilePic = 'https://graph.facebook.com/'.$param['u'].'/picture?width=200&height=200';
|
|
$this->name = $author;
|
|
|
|
foreach($element->children() as $post) {
|
|
|
|
$item = new \Item();
|
|
|
|
if (count($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>');
|
|
|
|
//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")).'...';
|
|
|
|
//Use first image as thumbnail if available, or profile pic fallback
|
|
$thumbnail = $post->find('img', 1);
|
|
if (is_object($thumbnail))
|
|
$thumbnail = $thumbnail->src;
|
|
else $thumbnail = $profilePic;
|
|
|
|
//Build and add final item
|
|
$item->uri = 'https://facebook.com'.$post->find('abbr')[0]->parent()->getAttribute('href');
|
|
$item->thumbnailUri = $thumbnail;
|
|
$item->content = $content;
|
|
$item->title = $title;
|
|
$item->author = $author;
|
|
$item->timestamp = $date;
|
|
$this->items[] = $item;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public function setDatas(array $param){
|
|
if (isset($param['captcha_response']))
|
|
unset($param['captcha_response']);
|
|
parent::setDatas($param);
|
|
}
|
|
|
|
public function getName() {
|
|
return (isset($this->name) ? $this->name.' - ' : '').'Facebook Bridge';
|
|
}
|
|
|
|
public function getCacheDuration() {
|
|
return 300; // 5 minutes
|
|
}
|
|
}
|