[FacebookBridge] Optimize for readability
This commit is contained in:
logmanoriginal
parent
93e7ea9fea
commit
e1c4914b1c
1 changed files with 221 additions and 158 deletions
|
|
@ -2,7 +2,7 @@
|
|||
class FacebookBridge extends BridgeAbstract {
|
||||
|
||||
const MAINTAINER = 'teromene, logmanoriginal';
|
||||
const NAME = 'Facebook';
|
||||
const NAME = 'Facebook Bridge';
|
||||
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,
|
||||
|
|
@ -47,17 +47,56 @@ class FacebookBridge extends BridgeAbstract {
|
|||
private $authorName = '';
|
||||
private $groupName = '';
|
||||
|
||||
public function getName(){
|
||||
|
||||
switch($this->queriedContext) {
|
||||
|
||||
case 'User':
|
||||
if(!empty($this->authorName)) {
|
||||
return isset($this->extraInfos['name']) ? $this->extraInfos['name'] : $this->authorName
|
||||
. ' - ' . static::NAME;
|
||||
}
|
||||
break;
|
||||
|
||||
case 'Group':
|
||||
if(!empty($this->groupName)) {
|
||||
return $this->groupName . ' - ' . static::NAME;
|
||||
}
|
||||
break;
|
||||
|
||||
}
|
||||
|
||||
return parent::getName();
|
||||
}
|
||||
|
||||
public function getURI() {
|
||||
$uri = self::URI;
|
||||
|
||||
switch($this->queriedContext) {
|
||||
|
||||
case 'Group':
|
||||
// Discover groups via https://www.facebook.com/groups/
|
||||
// Example group: https://www.facebook.com/groups/sailors.worldwide
|
||||
$uri .= 'groups/' . $this->sanitizeGroup(filter_var($this->getInput('g'), FILTER_SANITIZE_URL));
|
||||
break;
|
||||
|
||||
case 'User':
|
||||
// Example user 1: https://www.facebook.com/artetv/
|
||||
// Example user 2: artetv
|
||||
$user = $this->sanitizeUser($this->getInput('u'));
|
||||
|
||||
if(!strpos($user, '/')) {
|
||||
$uri .= urlencode($user);
|
||||
} else {
|
||||
$uri .= 'pages/' . $user;
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
}
|
||||
|
||||
// Request the mobile version to reduce page size (no javascript)
|
||||
// More information: https://stackoverflow.com/a/11103592
|
||||
return $uri .= '?_fb_noscript=1';
|
||||
}
|
||||
|
||||
|
|
@ -249,166 +288,211 @@ class FacebookBridge extends BridgeAbstract {
|
|||
|
||||
}
|
||||
|
||||
#endregion
|
||||
#endregion (Group)
|
||||
|
||||
private function collectUserData(){
|
||||
#region User
|
||||
|
||||
//Utility function for cleaning a Facebook link
|
||||
$unescape_fb_link = function($matches){
|
||||
/**
|
||||
* Checks if $user is a valid username or URI and returns the username
|
||||
*/
|
||||
private function sanitizeUser($user) {
|
||||
if (filter_var($user, FILTER_VALIDATE_URL)) {
|
||||
|
||||
$urlparts = parse_url($user);
|
||||
|
||||
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!');
|
||||
}
|
||||
|
||||
return explode('/', $urlparts['path'])[1];
|
||||
|
||||
} else {
|
||||
|
||||
// First character cannot be a forward slash
|
||||
if(strpos($user, '/') === 0) {
|
||||
returnClientError('Remove leading slash "/" from the username!');
|
||||
}
|
||||
|
||||
return $user;
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Bypass external link redirection
|
||||
*/
|
||||
private function unescape_fb_link($content){
|
||||
return preg_replace_callback('/ href=\"([^"]+)\"/i', 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 . '"';
|
||||
|
||||
}
|
||||
};
|
||||
}, $content);
|
||||
}
|
||||
|
||||
//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 $matches[0];
|
||||
};
|
||||
/**
|
||||
* Convert textual representation of emoticons back to ASCII emoticons.
|
||||
* i.e. "<i><u>smile emoticon</u></i>" => ":)"
|
||||
*/
|
||||
private function unescape_fb_emote($content){
|
||||
return preg_replace_callback('/<i><u>([^ <>]+) ([^<>]+)<\/u><\/i>/i', 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' => '👍');
|
||||
|
||||
$html = null;
|
||||
$len = count($matches);
|
||||
|
||||
//Handle captcha response sent by the viewer
|
||||
if ($len > 1)
|
||||
for ($i = 1; $i < $len; $i++)
|
||||
foreach ($facebook_emoticons as $name => $emote)
|
||||
if ($matches[$i] === $name)
|
||||
return $emote;
|
||||
|
||||
return $matches[0];
|
||||
}, $content);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the captcha message for the given captcha
|
||||
*/
|
||||
private function returnCaptchaMessage($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);
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks if a capture response was received and tries to load the contents
|
||||
* @return mixed null if no capture response was received, simplhtmldom document otherwise
|
||||
*/
|
||||
private function handleCaptchaResponse() {
|
||||
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");
|
||||
$header = array(
|
||||
'Content-type: application/x-www-form-urlencoded',
|
||||
'Referer: ' . $captcha_action,
|
||||
'Cookie: noscript=1'
|
||||
);
|
||||
|
||||
$opts = array(
|
||||
CURLOPT_POST => 1,
|
||||
CURLOPT_POSTFIELDS => http_build_query($captcha_fields)
|
||||
);
|
||||
|
||||
$html = getContents($captcha_action, $header, $opts);
|
||||
$html = getSimpleHTMLDOM($captcha_action, $header, $opts)
|
||||
or returnServerError('Failed to submit captcha response back to Facebook');
|
||||
|
||||
if($html === false) {
|
||||
returnServerError('Failed to submit captcha response back to Facebook');
|
||||
}
|
||||
unset($_SESSION['captcha_fields']);
|
||||
$html = str_get_html($html);
|
||||
return $html;
|
||||
}
|
||||
|
||||
unset($_SESSION['captcha_fields']);
|
||||
unset($_SESSION['captcha_action']);
|
||||
}
|
||||
|
||||
//Retrieve page contents
|
||||
return null;
|
||||
}
|
||||
|
||||
private function collectUserData(){
|
||||
|
||||
$html = $this->handleCaptchaResponse();
|
||||
|
||||
// Retrieve page contents
|
||||
if(is_null($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)) {
|
||||
$header = array('Accept-Language: ' . getEnv('HTTP_ACCEPT_LANGUAGE'));
|
||||
|
||||
$urlparts = parse_url($this->getInput('u'));
|
||||
$html = getSimpleHTMLDOM($this->getURI(), $header)
|
||||
or returnServerError('No results for this query.');
|
||||
|
||||
if($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?
|
||||
// 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);
|
||||
if (!is_null($captcha)) {
|
||||
$this->returnCaptchaMessage($captcha);
|
||||
}
|
||||
|
||||
//No captcha? We can carry on retrieving page contents :)
|
||||
//First, we check wether the page is public or not
|
||||
// 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.');
|
||||
}
|
||||
|
||||
$html = defaultLinkTo($html, self::URI);
|
||||
|
||||
$element = $html
|
||||
->find('#pagelet_timeline_main_column')[0]
|
||||
->children(0)
|
||||
|
|
@ -419,12 +503,9 @@ EOD;
|
|||
|
||||
if(isset($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#.image';
|
||||
|
||||
$profilePic = $html->find('meta[property="og:image"]', 0)->content;
|
||||
|
||||
$this->authorName = $author;
|
||||
|
||||
|
|
@ -480,19 +561,18 @@ EOD;
|
|||
'',
|
||||
$content);
|
||||
|
||||
//Remove "SpSonsSoriSsés"
|
||||
// Remove "SpSonsSoriSsés"
|
||||
$content = preg_replace(
|
||||
'/(?iU)<a [^>]+ href="#" role="link" [^>}]+>.+<\/a>/iU',
|
||||
'',
|
||||
$content);
|
||||
|
||||
//Remove html nodes, keep only img, links, basic formatting
|
||||
// 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);
|
||||
$content = $this->unescape_fb_link($content);
|
||||
|
||||
//Clean useless html tag properties and fix link closing tags
|
||||
// Clean useless html tag properties and fix link closing tags
|
||||
foreach (array(
|
||||
'onmouseover',
|
||||
'onclick',
|
||||
|
|
@ -505,31 +585,31 @@ EOD;
|
|||
'aria-[^=]*',
|
||||
'role',
|
||||
'rel',
|
||||
'id') as $property_name)
|
||||
$content = preg_replace('/ ' . $property_name . '=\"[^"]*\"/i', '', $content);
|
||||
'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
|
||||
);
|
||||
$this->unescape_fb_emote($content);
|
||||
|
||||
//Retrieve date of the post
|
||||
// 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
|
||||
// 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")) . '...';
|
||||
|
||||
|
|
@ -545,8 +625,10 @@ EOD;
|
|||
$item['title'] = $title;
|
||||
$item['author'] = $author;
|
||||
$item['timestamp'] = $date;
|
||||
if(strpos($item['content'], '<img') === false)
|
||||
|
||||
if(strpos($item['content'], '<img') === false) {
|
||||
$item['enclosures'] = array($profilePic);
|
||||
}
|
||||
|
||||
$this->items[] = $item;
|
||||
}
|
||||
|
|
@ -555,25 +637,6 @@ EOD;
|
|||
}
|
||||
}
|
||||
|
||||
public function getName(){
|
||||
#endregion (User)
|
||||
|
||||
switch($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();
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue