mirror of
https://github.com/RSS-Bridge/rss-bridge.git
synced 2024-11-23 10:05:32 +03:00
cbda060b86
All formats except HTML return & instead of & in URLs causing all links with parameters (...&id=...) to break. Facebook does not return valid HTML URIs but instead provides them with all special characters encoded (like using htmlspecialchars). This seems to be related to the page being build almost entirely of script blocks. This commit adds htmlspecialchars_decode() to URI and content to reverse the encoding. References #550
307 lines
9.1 KiB
PHP
307 lines
9.1 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
|
|
),
|
|
'media_type' => array(
|
|
'name' => 'Media type',
|
|
'type' => 'list',
|
|
'required' => false,
|
|
'values' => array(
|
|
'All' => 'all',
|
|
'Video' => 'video',
|
|
'No Video' => 'novideo'
|
|
),
|
|
'defaultValue' => 'all'
|
|
)
|
|
));
|
|
|
|
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)) {
|
|
$http_options = array(
|
|
'http' => array(
|
|
'method' => 'GET',
|
|
'user_agent' => ini_get('user_agent'),
|
|
'header' => 'Accept-Language: ' . getEnv('HTTP_ACCEPT_LANGUAGE') . "\r\n"
|
|
)
|
|
);
|
|
$context = stream_context_create($http_options);
|
|
if(!strpos($this->getInput('u'), "/")) {
|
|
$html = getSimpleHTMLDOM(self::URI . urlencode($this->getInput('u')) . '?_fb_noscript=1',
|
|
false,
|
|
$context)
|
|
or returnServerError('No results for this query.');
|
|
} else {
|
|
$html = getSimpleHTMLDOM(self::URI . 'pages/' . $this->getInput('u') . '?_fb_noscript=1',
|
|
false,
|
|
$context)
|
|
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 $post) {
|
|
// Check media type
|
|
switch($this->getInput('media_type')) {
|
|
case 'all': break;
|
|
case 'video':
|
|
if(empty($post->find('[aria-label=Video]'))) continue 2;
|
|
break;
|
|
case 'novideo':
|
|
if(!empty($post->find('[aria-label=Video]'))) continue 2;
|
|
break;
|
|
default: break;
|
|
}
|
|
|
|
$item = array();
|
|
|
|
if(count($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")) . '...';
|
|
|
|
$uri = self::URI . $post->find('abbr')[0]->parent()->getAttribute('href');
|
|
|
|
//Build and add final item
|
|
$item['uri'] = htmlspecialchars_decode($uri);
|
|
$item['content'] = htmlspecialchars_decode($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();
|
|
}
|
|
}
|