fix facebook relay

now facebook is randomly asking people "wanna install the facebook app?", not all accounts get it, but some do, and fb won't let you continue until you say yes or no, so say no. after doing that, the facebook relay works again! :)

Author: divinity76

src/php/relays/facebook.relay.php

@@ -42,7 +42,7 @@ public function sendMessage(string $message): bool {
 			return $ret;
 		});
 		$postfields = $postfields ();
-		//seems facebook removed this field: assert ( array_key_exists ( 'name', $postfields ) );
+		// seems facebook removed this field: assert ( array_key_exists ( 'name', $postfields ) );
 		assert ( array_key_exists ( 'body', $postfields ) );
 		$postfields ['body'] = $message;
 		$urlinfo = \parse_url ( $hc->getinfo ( CURLINFO_EFFECTIVE_URL ) );
@@ -51,12 +51,12 @@ public function sendMessage(string $message): bool {
 		// hhb_var_dump ( $postfields, $posturl );
 		$hc->setopt_array ( array (
 				CURLOPT_POST => true,
-				CURLOPT_POSTFIELDS => http_build_query ( $postfields )
+				CURLOPT_POSTFIELDS => http_build_query ( $postfields ) 
 		) );
 		$hc->exec ( $posturl );
 		// TODO: parse the response to make sure it isn't an error?
 		// hhb_var_dump ( $postfields, $posturl, $hc->getStdErr (), $hc->getResponseBody () );
-
+		
 		return true;
 	}
 	public function getRecipient(): string {
@@ -86,12 +86,13 @@ function __construct() {
 		$hc->setopt_array ( array (
 				CURLOPT_USERAGENT => 'Mozilla/5.0 (BlackBerry; U; BlackBerry 9300; en) AppleWebKit/534.8+ (KHTML, like Gecko) Version/6.0.0.570 Mobile Safari/534.8+',
 				CURLOPT_HTTPHEADER => array (
-						'accept-language:en-US,en;q=0.8'
-				)
+						'accept-language:en-US,en;q=0.8' 
+				) 
 		) );
 		$hc->exec ( 'https://m.facebook.com/' );
+		// \hhb_var_dump ( $hc->getStdErr (), $hc->getStdOut () ) & die ();
 		$domd = @\DOMDocument::loadHTML ( $hc->getResponseBody () );
-
+		
 		$namespaces = array ();
 		foreach ( \get_declared_classes () as $name ) {
 			if (\preg_match_all ( "@[^\\\]+(?=\\\)@iU", $name, $matches )) {
@@ -102,14 +103,13 @@ function __construct() {
 					if (! isset ( $parent [$match] ) && \count ( $matches ))
 						$parent [$match] = array ();
 					$parent = &$parent [$match];
-
 				}
 			}
 		}
-
+		
 		// print_r ( $namespaces );
 		// die ( "DIEDS" );
-
+		
 		$form = (\MsgMe\tools\getDOMDocumentFormInputs ( $domd, true )) ['login_form'];
 		$url = $domd->getElementsByTagName ( "form" )->item ( 0 )->getAttribute ( "action" );
 		$postfields = (function () use (&$form): array {
@@ -128,11 +128,24 @@ function __construct() {
 				CURLOPT_POST => true,
 				CURLOPT_POSTFIELDS => http_build_query ( $postfields ),
 				CURLOPT_HTTPHEADER => array (
-						'accept-language:en-US,en;q=0.8'
-				)
+						'accept-language:en-US,en;q=0.8' 
+				) 
 		) );
+		// \hhb_var_dump ($postfields ) & die ();
 		$hc->exec ( $url );
+		// \hhb_var_dump ( $hc->getStdErr (), $hc->getStdOut () ) & die ();
+		
 		$domd = @\DOMDocument::loadHTML ( $hc->getResponseBody () );
+		$xp = new \DOMXPath ( $domd );
+		$InstallFacebookAppRequest = $xp->query ( "//a[contains(@href,'/login/save-device/cancel/')]" );
+		if ($InstallFacebookAppRequest->length > 0) {
+			// not all accounts get this, but some do, not sure why, anyway, if this exist, fb is asking "ey wanna install the fb app instead of using the website?"
+			// and won't let you proceed further until you say yes or no. so we say no.
+			$url = 'https://m.facebook.com' . $InstallFacebookAppRequest->item ( 0 )->getAttribute ( "href" );
+			$hc->exec ( $url );
+			$domd = @\DOMDocument::loadHTML ( $hc->getResponseBody () );
+		}
+		unset ( $InstallFacebookAppRequest, $url, $xp );
 		$logoutUrl = function () use (&$domd, &$hc): string {
 			foreach ( $domd->getElementsByTagName ( "a" ) as $a ) {
 				if (strpos ( $a->textContent, 'Logout' ) !== 0) {
@@ -152,5 +165,4 @@ function __destruct() {
 		$this->hc->exec ( $this->logoutUrl );
 		unset ( $this->hc ); // im trying to force it to hhb_curl::__destruct, this would be the appropriate time.
 	}
-
 }