Fixes for GoToSocial

index.php

@@ -456,7 +456,7 @@
 				        "Host: {$host}",
 				        "Date: {$date}",
 				   "Signature: {$signature_header}",
-				      "Accept: application/activity+json",
+				      "Accept: application/activity+json, application/json",
 			);
 		}
 
@@ -1328,10 +1328,9 @@ HTML;
 		list( , $follow_name, $follow_server ) = explode( "@", $user );
 
 		//	Get the Webfinger
-		//	This request does not need to be signed.
+		//	This request does not always need to be signed, but safest to do so anyway.
 		$webfingerURl  = "https://{$follow_server}/.well-known/webfinger?resource=acct:{$follow_name}@{$follow_server}";
-		$webfingerJSON = file_get_contents( $webfingerURl );
-		$webfinger     = json_decode( $webfingerJSON, true );
+		$webfinger = getDataFromURl( $webfingerURl );
 
 		//	Get the link to the user
 		foreach( $webfinger["links"] as $link ) {
@@ -1339,7 +1338,7 @@ HTML;
 				$profileURl = $link["href"];
 			}
 		}
-		if ( !isset( $profileURl ) ) { echo "No profile"; die(); }
+		if ( !isset( $profileURl ) ) { echo "No profile" . print_r( $webfinger, true ); die(); }
 		
 		//	Get the user's details
 		$profileData = getDataFromURl( $profileURl );
@@ -1415,7 +1414,8 @@ HTML;
 
 		//	There might be many different hashing algorithms
 		//	TODO: Find a way to transform these automatically
-		if ( "SHA-256" == $digestAlgorithm ) {
+		//	See https://github.com/superseriousbusiness/gotosocial/issues/1186#issuecomment-1976166659 and https://github.com/snarfed/bridgy-fed/issues/430 for hs2019
+		if ( "SHA-256" == $digestAlgorithm || "hs2019" == $digestAlgorithm ) {
 			$digestAlgorithm = "sha256";
 		} else if ( "SHA-512" == $digestAlgorithm ) {
 			$digestAlgorithm = "sha512";