X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=include%2Fsalmon.php;h=8ebd9016f1dbbfcedd628622c6ae7a37dd663cd2;hb=82b423c5ac3269d39e6384fa3c43d1d9e5285ad4;hp=2b583347042e24cc8d26dca3868eb8f7ac2054f5;hpb=45ebeba643a6d600e8778475f70f827f32bf3146;p=friendica.git

diff --git a/include/salmon.php b/include/salmon.php
index 2b58334704..8ebd9016f1 100644
--- a/include/salmon.php
+++ b/include/salmon.php
@@ -1,23 +1,22 @@
 <?php
 
-require_once('include/crypto.php');
+require_once 'include/crypto.php';
 require_once('include/Probe.php');
 
-function get_salmon_key($uri,$keyhash) {
+function get_salmon_key($uri, $keyhash) {
 	$ret = array();
 
 	logger('Fetching salmon key for '.$uri);
 
 	$arr = Probe::lrdd($uri);
 
-	if(is_array($arr)) {
-		foreach($arr as $a) {
-			if($a['@attributes']['rel'] === 'magic-public-key') {
+	if (is_array($arr)) {
+		foreach ($arr as $a) {
+			if ($a['@attributes']['rel'] === 'magic-public-key') {
 				$ret[] = $a['@attributes']['href'];
 			}
 		}
-	}
-	else {
+	} else {
 		return '';
 	}
 
@@ -26,11 +25,11 @@ function get_salmon_key($uri,$keyhash) {
 
 	if (count($ret) > 0) {
 		for ($x = 0; $x < count($ret); $x ++) {
-			if (substr($ret[$x],0,5) === 'data:') {
-				if (strstr($ret[$x],',')) {
-					$ret[$x] = substr($ret[$x],strpos($ret[$x],',')+1);
+			if (substr($ret[$x], 0, 5) === 'data:') {
+				if (strstr($ret[$x], ',')) {
+					$ret[$x] = substr($ret[$x], strpos($ret[$x], ',') + 1);
 				} else {
-					$ret[$x] = substr($ret[$x],5);
+					$ret[$x] = substr($ret[$x], 5);
 				}
 			} elseif (normalise_link($ret[$x]) == 'http://') {
 				$ret[$x] = fetch_url($ret[$x]);
@@ -39,7 +38,7 @@ function get_salmon_key($uri,$keyhash) {
 	}
 
 
-	logger('Key located: ' . print_r($ret,true));
+	logger('Key located: ' . print_r($ret, true));
 
 	if (count($ret) == 1) {
 
@@ -50,10 +49,9 @@ function get_salmon_key($uri,$keyhash) {
 		// have one key we'll be right.
 
 		return $ret[0];
-	}
-	else {
+	} else {
 		foreach ($ret as $a) {
-			$hash = base64url_encode(hash('sha256',$a));
+			$hash = base64url_encode(hash('sha256', $a));
 			if ($hash == $keyhash) {
 				return $a;
 			}
@@ -65,17 +63,17 @@ function get_salmon_key($uri,$keyhash) {
 
 
 
-function slapper($owner,$url,$slap) {
+function slapper($owner, $url, $slap) {
 
 	// does contact have a salmon endpoint?
 
-	if(! strlen($url))
+	if (! strlen($url)) {
 		return;
+	}
 
-
-	if(! $owner['sprvkey']) {
+	if (! $owner['sprvkey']) {
 		logger(sprintf("user '%s' (%d) does not have a salmon private key. Send failed.",
-		$owner['username'],$owner['uid']));
+		$owner['username'], $owner['uid']));
 		return;
 	}
 
@@ -87,30 +85,33 @@ function slapper($owner,$url,$slap) {
 	$data_type = 'application/atom+xml';
 	$encoding  = 'base64url';
 	$algorithm = 'RSA-SHA256';
-	$keyhash   = base64url_encode(hash('sha256',salmon_key($owner['spubkey'])),true);
+	$keyhash   = base64url_encode(hash('sha256', salmon_key($owner['spubkey'])), true);
 
-	// precomputed base64url encoding of data_type, encoding, algorithm concatenated with periods
+	$precomputed = '.' . base64url_encode($data_type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($algorithm);
 
-	$precomputed = '.YXBwbGljYXRpb24vYXRvbSt4bWw=.YmFzZTY0dXJs.UlNBLVNIQTI1Ng==';
+	// GNU Social format
+	$signature   = base64url_encode(rsa_sign($data . $precomputed, $owner['sprvkey']));
 
-	$signature   = base64url_encode(rsa_sign(str_replace('=','',$data . $precomputed),$owner['sprvkey']));
+	// Compliant format
+	$signature2  = base64url_encode(rsa_sign(str_replace('=', '', $data . $precomputed), $owner['sprvkey']));
 
-	$signature2  = base64url_encode(rsa_sign($data . $precomputed,$owner['sprvkey']));
+	// Old Status.net format
+	$signature3  = base64url_encode(rsa_sign($data, $owner['sprvkey']));
 
-	$signature3  = base64url_encode(rsa_sign($data,$owner['sprvkey']));
+	// At first try the non compliant method that works for GNU Social
+	$xmldata = array("me:env" => array("me:data" => $data,
+			"@attributes" => array("type" => $data_type),
+			"me:encoding" => $encoding,
+			"me:alg" => $algorithm,
+			"me:sig" => $signature,
+			"@attributes2" => array("key_id" => $keyhash)));
 
-	$salmon_tpl = get_markup_template('magicsig.tpl');
+	$namespaces = array("me" => "http://salmon-protocol.org/ns/magic-env");
 
-	$salmon = replace_macros($salmon_tpl,array(
-		'$data'      => $data,
-		'$encoding'  => $encoding,
-		'$algorithm' => $algorithm,
-		'$keyhash'   => $keyhash,
-		'$signature' => $signature
-	));
+	$salmon = xml::from_array($xmldata, $xml, false, $namespaces);
 
 	// slap them
-	post_url($url,$salmon, array(
+	post_url($url, $salmon, array(
 		'Content-type: application/magic-envelope+xml',
 		'Content-length: ' . strlen($salmon)
 	));
@@ -120,60 +121,59 @@ function slapper($owner,$url,$slap) {
 
 	// check for success, e.g. 2xx
 
-	if($return_code > 299) {
+	if ($return_code > 299) {
 
-		logger('compliant salmon failed. Falling back to status.net hack2');
+		logger('GNU Social salmon failed. Falling back to compliant mode');
 
-		// Entirely likely that their salmon implementation is
-		// non-compliant. Let's try once more, this time only signing
-		// the data, without stripping '=' chars
+		// Now try the compliant mode that normally isn't used for GNU Social
+		$xmldata = array("me:env" => array("me:data" => $data,
+				"@attributes" => array("type" => $data_type),
+				"me:encoding" => $encoding,
+				"me:alg" => $algorithm,
+				"me:sig" => $signature2,
+				"@attributes2" => array("key_id" => $keyhash)));
 
-		$salmon = replace_macros($salmon_tpl,array(
-			'$data'      => $data,
-			'$encoding'  => $encoding,
-			'$algorithm' => $algorithm,
-			'$keyhash'   => $keyhash,
-			'$signature' => $signature2
-		));
+		$namespaces = array("me" => "http://salmon-protocol.org/ns/magic-env");
+
+		$salmon = xml::from_array($xmldata, $xml, false, $namespaces);
 
 		// slap them
-		post_url($url,$salmon, array(
+		post_url($url, $salmon, array(
 			'Content-type: application/magic-envelope+xml',
 			'Content-length: ' . strlen($salmon)
 		));
 		$return_code = $a->get_curl_code();
+	}
 
+	if ($return_code > 299) {
+		logger('compliant salmon failed. Falling back to old status.net');
 
-		if($return_code > 299) {
-
-			logger('compliant salmon failed. Falling back to status.net hack3');
+		// Last try. This will most likely fail as well.
+		$xmldata = array("me:env" => array("me:data" => $data,
+				"@attributes" => array("type" => $data_type),
+				"me:encoding" => $encoding,
+				"me:alg" => $algorithm,
+				"me:sig" => $signature3,
+				"@attributes2" => array("key_id" => $keyhash)));
 
-			// Entirely likely that their salmon implementation is
-			// non-compliant. Let's try once more, this time only signing
-			// the data, without the precomputed blob
+		$namespaces = array("me" => "http://salmon-protocol.org/ns/magic-env");
 
-			$salmon = replace_macros($salmon_tpl,array(
-				'$data'      => $data,
-				'$encoding'  => $encoding,
-				'$algorithm' => $algorithm,
-				'$keyhash'   => $keyhash,
-				'$signature' => $signature3
-			));
+		$salmon = xml::from_array($xmldata, $xml, false, $namespaces);
 
-			// slap them
-			post_url($url,$salmon, array(
-				'Content-type: application/magic-envelope+xml',
-				'Content-length: ' . strlen($salmon)
-			));
-			$return_code = $a->get_curl_code();
-		}
+		// slap them
+		post_url($url, $salmon, array(
+			'Content-type: application/magic-envelope+xml',
+			'Content-length: ' . strlen($salmon)
+		));
+		$return_code = $a->get_curl_code();
 	}
+
 	logger('slapper for '.$url.' returned ' . $return_code);
-	if(! $return_code)
+	if (! $return_code) {
 		return(-1);
-	if(($return_code == 503) && (stristr($a->get_curl_headers(),'retry-after')))
+	}
+	if (($return_code == 503) && (stristr($a->get_curl_headers(), 'retry-after'))) {
 		return(-1);
-
+	}
 	return ((($return_code >= 200) && ($return_code < 300)) ? 0 : 1);
 }
-