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rss-bridge/bridges/FacebookBridge.php
logmanoriginal a4b9611e66 [phpcs] Add missing rules 
- Do not add spaces after opening or before closing parenthesis

  // Wrong
  if( !is_null($var) ) {
    ...
  }

  // Right
  if(!is_null($var)) {
    ...
  }

- Add space after closing parenthesis

  // Wrong
  if(true){
    ...
  }

  // Right
  if(true) {
    ...
  }

- Add body into new line
- Close body in new line

  // Wrong
  if(true) { ... }

  // Right
  if(true) {
    ...
  }

Notice: Spaces after keywords are not detected:

  // Wrong (not detected)
  // -> space after 'if' and missing space after 'else'
  if (true) {
    ...
  } else{
    ...
  }

  // Right
  if(true) {
    ...
  } else {
    ...
  }
2017-07-29 19:55:12 +02:00

305 lines
9.1 KiB
PHP
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<?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' => '&#x1F44D;');
$len = count($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&amp;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")) . '...';
//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();
}
}
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