access arbitrary claims in vault config

Author: overheadhunter

src/main/java/module-info.java

@@ -12,7 +12,7 @@
 	requires com.google.common;
 	requires org.slf4j;
 	requires dagger;
-	requires com.auth0.jwt;
+	requires transitive com.auth0.jwt;
 
 	// filename-based module required by dagger
 	// we will probably need to live with this for a while:

src/main/java/org/cryptomator/cryptofs/VaultConfig.java

@@ -6,6 +6,7 @@
 import com.auth0.jwt.exceptions.JWTDecodeException;
 import com.auth0.jwt.exceptions.JWTVerificationException;
 import com.auth0.jwt.exceptions.SignatureVerificationException;
+import com.auth0.jwt.interfaces.Claim;
 import com.auth0.jwt.interfaces.DecodedJWT;
 import org.cryptomator.cryptofs.common.Constants;
 import org.cryptomator.cryptolib.api.CryptorProvider;
@@ -140,18 +141,22 @@ public URI getKeyId() {
 			return URI.create(unverifiedConfig.getKeyId());
 		}
 
+		public Claim get(String key) {
+			return unverifiedConfig.getClaim(key);
+		}
+
 		/**
 		 * @return The unverified vault version (signature not verified)
 		 */
 		public int allegedVaultVersion() {
-			return unverifiedConfig.getClaim(JSON_KEY_VAULTVERSION).asInt();
+			return get(JSON_KEY_VAULTVERSION).asInt();
 		}
 
 		/**
 		 * @return The unverified shortening threshold (signature not verified)
 		 */
 		public int allegedShorteningThreshold() {
-			return unverifiedConfig.getClaim(JSON_KEY_SHORTENING_THRESHOLD).asInt();
+			return get(JSON_KEY_SHORTENING_THRESHOLD).asInt();
 		}
 
 		/**