mirror of
https://github.com/RSS-Bridge/rss-bridge.git
synced 2024-11-26 11:26:31 +03:00
581 lines
15 KiB
PHP
581 lines
15 KiB
PHP
<?php
|
|
class FacebookBridge extends BridgeAbstract {
|
|
|
|
const MAINTAINER = 'teromene, logmanoriginal';
|
|
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(
|
|
'User' => 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'
|
|
),
|
|
'skip_reviews' => array(
|
|
'name' => 'Skip reviews',
|
|
'type' => 'checkbox',
|
|
'required' => false,
|
|
'defaultValue' => false,
|
|
'title' => 'Feed includes reviews when checked'
|
|
)
|
|
),
|
|
'Group' => array(
|
|
'g' => array(
|
|
'name' => 'Group',
|
|
'type' => 'text',
|
|
'required' => true,
|
|
'exampleValue' => 'https://www.facebook.com/groups/743149642484225',
|
|
'title' => 'Insert group name or facebook group URL'
|
|
)
|
|
)
|
|
);
|
|
|
|
private $authorName = '';
|
|
private $groupName = '';
|
|
|
|
public function getURI() {
|
|
$uri = self::URI;
|
|
|
|
switch($this->queriedContext) {
|
|
|
|
case 'Group':
|
|
$uri .= 'groups/' . $this->sanitizeGroup(filter_var($this->getInput('g'), FILTER_SANITIZE_URL));
|
|
break;
|
|
|
|
}
|
|
|
|
return $uri .= '?_fb_noscript=1';
|
|
}
|
|
|
|
public function collectData() {
|
|
|
|
switch($this->queriedContext) {
|
|
|
|
case 'Group':
|
|
$this->collectGroupData();
|
|
break;
|
|
|
|
case 'User':
|
|
$this->collectUserData();
|
|
break;
|
|
|
|
default:
|
|
returnClientError('Unknown context: "' . $this->queriedContext . '"!');
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#region Group
|
|
|
|
private function collectGroupData() {
|
|
|
|
$header = array('Accept-Language: ' . getEnv('HTTP_ACCEPT_LANGUAGE') . "\r\n");
|
|
|
|
$html = getSimpleHTMLDOM($this->getURI(), $header)
|
|
or returnServerError('Failed loading facebook page: ' . $this->getURI());
|
|
|
|
if(!$this->isPublicGroup($html)) {
|
|
returnClientError('This group is not public! RSS-Bridge only supports public groups!');
|
|
}
|
|
|
|
defaultLinkTo($html, substr(self::URI, 0, strlen(self::URI) - 1));
|
|
|
|
$this->groupName = $this->extractGroupName($html);
|
|
|
|
$posts = $html->find('div.userContentWrapper')
|
|
or returnServerError('Failed finding posts!');
|
|
|
|
foreach($posts as $post) {
|
|
|
|
$item = array();
|
|
|
|
$item['uri'] = $this->extractGroupURI($post);
|
|
$item['title'] = $this->extractGroupTitle($post);
|
|
$item['author'] = $this->extractGroupAuthor($post);
|
|
$item['content'] = $this->extractGroupContent($post);
|
|
$item['timestamp'] = $this->extractGroupTimestamp($post);
|
|
$item['enclosures'] = $this->extractGroupEnclosures($post);
|
|
|
|
$this->items[] = $item;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
private function sanitizeGroup($group) {
|
|
|
|
if(filter_var(
|
|
$group,
|
|
FILTER_VALIDATE_URL,
|
|
FILTER_FLAG_HOST_REQUIRED | FILTER_FLAG_PATH_REQUIRED)) {
|
|
// User provided a URL
|
|
|
|
$urlparts = parse_url($group);
|
|
|
|
if($urlparts['host'] !== parse_url(self::URI)['host']
|
|
&& 'www.' . $urlparts['host'] !== parse_url(self::URI)['host']) {
|
|
|
|
returnClientError('The host you provided is invalid! Received "'
|
|
. $urlparts['host']
|
|
. '", expected "'
|
|
. parse_url(self::URI)['host']
|
|
. '"!');
|
|
|
|
}
|
|
|
|
return explode('/', $urlparts['path'])[2];
|
|
|
|
} elseif(strpos($group, '/') !== false) {
|
|
returnClientError('The group you provided is invalid: ' . $group);
|
|
} else {
|
|
return $group;
|
|
}
|
|
|
|
}
|
|
|
|
private function isPublicGroup($html) {
|
|
|
|
// Facebook redirects to the groups about page for non-public groups
|
|
$about = $html->find('#pagelet_group_about', 0);
|
|
|
|
return !($about);
|
|
|
|
}
|
|
|
|
private function extractGroupName($html) {
|
|
|
|
$ogtitle = $html->find('meta[property="og:title"]', 0)
|
|
or returnServerError('Unable to find group title!');
|
|
|
|
return htmlspecialchars_decode($ogtitle->content, ENT_QUOTES);
|
|
|
|
}
|
|
|
|
private function extractGroupURI($post) {
|
|
|
|
$elements = $post->find('a')
|
|
or returnServerError('Unable to find URI!');
|
|
|
|
foreach($elements as $anchor) {
|
|
|
|
// Find the one that is a permalink
|
|
if(strpos($anchor->href, 'permalink') !== false) {
|
|
return $anchor->href;
|
|
}
|
|
|
|
}
|
|
|
|
return null;
|
|
|
|
}
|
|
|
|
private function extractGroupContent($post) {
|
|
|
|
$content = $post->find('div.userContent', 0)
|
|
or returnServerError('Unable to find user content!');
|
|
|
|
return $content->innertext . $content->next_sibling()->innertext;
|
|
|
|
}
|
|
|
|
private function extractGroupTimestamp($post) {
|
|
|
|
$element = $post->find('abbr[data-utime]', 0)
|
|
or returnServerError('Unable to find timestamp!');
|
|
|
|
return $element->getAttribute('data-utime');
|
|
|
|
}
|
|
|
|
private function extractGroupAuthor($post) {
|
|
|
|
$element = $post->find('img', 0)
|
|
or returnServerError('Unable to find author information!');
|
|
|
|
return $element->{'aria-label'};
|
|
|
|
}
|
|
|
|
private function extractGroupEnclosures($post) {
|
|
|
|
$elements = $post->find('div.userContent', 0)->next_sibling()->find('img');
|
|
|
|
$enclosures = array();
|
|
|
|
foreach($elements as $enclosure) {
|
|
$enclosures[] = $enclosure->src;
|
|
}
|
|
|
|
return empty($enclosures) ? null : $enclosures;
|
|
|
|
}
|
|
|
|
private function extractGroupTitle($post) {
|
|
|
|
$element = $post->find('h5', 0)
|
|
or returnServerError('Unable to find title!');
|
|
|
|
if(strpos($element->plaintext, 'shared') === false) {
|
|
|
|
$content = strip_tags($this->extractGroupContent($post));
|
|
|
|
return $this->extractGroupAuthor($post)
|
|
. ' posted: '
|
|
. substr(
|
|
$content,
|
|
0,
|
|
strpos(wordwrap($content, 64), "\n")
|
|
)
|
|
. '...';
|
|
|
|
}
|
|
|
|
return $element->plaintext;
|
|
|
|
}
|
|
|
|
#endregion
|
|
|
|
private function collectUserData(){
|
|
|
|
//Extract a string using start and end delimiters
|
|
function extractFromDelimiters($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']);
|
|
|
|
$header = array("Content-type:
|
|
application/x-www-form-urlencoded\r\nReferer: $captcha_action\r\nCookie: noscript=1\r\n");
|
|
$opts = array(
|
|
CURLOPT_POST => 1,
|
|
CURLOPT_POSTFIELDS => http_build_query($captcha_fields)
|
|
);
|
|
|
|
$html = getContents($captcha_action, $header, $opts);
|
|
|
|
if($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)) {
|
|
$header = array('Accept-Language: ' . getEnv('HTTP_ACCEPT_LANGUAGE') . "\r\n");
|
|
|
|
// Check if the user provided a fully qualified URL
|
|
if (filter_var($this->getInput('u'), FILTER_VALIDATE_URL)) {
|
|
|
|
$urlparts = parse_url($this->getInput('u'));
|
|
|
|
if($urlparts['host'] !== parse_url(self::URI)['host']) {
|
|
returnClientError('The host you provided is invalid! Received "'
|
|
. $urlparts['host']
|
|
. '", expected "'
|
|
. parse_url(self::URI)['host']
|
|
. '"!');
|
|
}
|
|
|
|
if(!array_key_exists('path', $urlparts)
|
|
|| $urlparts['path'] === '/') {
|
|
returnClientError('The URL you provided doesn\'t contain the user name!');
|
|
}
|
|
|
|
$user = explode('/', $urlparts['path'])[1];
|
|
|
|
$html = getSimpleHTMLDOM(self::URI . urlencode($user) . '?_fb_noscript=1', $header)
|
|
or returnServerError('No results for this query.');
|
|
|
|
} else {
|
|
|
|
// First character cannot be a forward slash
|
|
if(strpos($this->getInput('u'), '/') === 0) {
|
|
returnClientError('Remove leading slash "/" from the username!');
|
|
}
|
|
|
|
if(!strpos($this->getInput('u'), '/')) {
|
|
$html = getSimpleHTMLDOM(self::URI . urlencode($this->getInput('u')) . '?_fb_noscript=1', $header)
|
|
or returnServerError('No results for this query.');
|
|
} else {
|
|
$html = getSimpleHTMLDOM(self::URI . 'pages/' . $this->getInput('u') . '?_fb_noscript=1', $header)
|
|
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));
|
|
http_response_code(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 :)
|
|
//First, we check wether the page is public or not
|
|
$loginForm = $html->find('._585r', 0);
|
|
if($loginForm != null) {
|
|
returnServerError('You must be logged in to view this page. This is not supported by RSS-Bridge.');
|
|
}
|
|
|
|
$element = $html
|
|
->find('#pagelet_timeline_main_column')[0]
|
|
->children(0)
|
|
->children(0)
|
|
->children(0)
|
|
->next_sibling()
|
|
->children(0);
|
|
|
|
if(isset($element)) {
|
|
|
|
defaultLinkTo($element, self::URI);
|
|
|
|
$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);
|
|
}
|
|
|
|
// Optionally skip reviews
|
|
if($this->getInput('skip_reviews')
|
|
&& !is_null($cell->find('#review_composer_container', 0))) {
|
|
continue;
|
|
}
|
|
|
|
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 = $post->find('abbr')[0]->parent()->getAttribute('href');
|
|
|
|
if (false !== strpos($uri, '?')) {
|
|
$uri = substr($uri, 0, strpos($uri, '?'));
|
|
}
|
|
|
|
//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[] = $item;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public function getName(){
|
|
|
|
switch($this->queriedContext) {
|
|
|
|
case 'User':
|
|
if(!empty($this->authorName)) {
|
|
return isset($this->extraInfos['name']) ? $this->extraInfos['name'] : $this->authorName
|
|
. ' - Facebook Bridge';
|
|
}
|
|
break;
|
|
|
|
case 'Group':
|
|
if(!empty($this->groupName)) {
|
|
return $this->groupName . ' - Facebook Bridge';
|
|
}
|
|
break;
|
|
|
|
}
|
|
|
|
return parent::getName();
|
|
}
|
|
}
|