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style: ProxyAgnosticMojangResolver: Extracted the URL into a constant

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The URL of the mojang session server call in ProxyAgnosticMojangResolver was extracted into a constant in order to mitigate the "magic constants" problem.

Additionally, the 204 in the response code check was replaced by a constant from HttpURLConnection, again, in order to not use any magic numbers.
This commit is contained in:
Enginecrafter77
2022-06-10 11:28:59 +02:00
parent 6413ca4d10
commit edd82f7978
1 changed files with 16 additions and 3 deletions
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19
core/src/main/java/com/github/games647/fastlogin/core/mojang/ProxyAgnosticMojangResolver.java
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@ -42,21 +42,34 @@ import java.util.Optional;
* @author games647, Enginecrafter77
*/
public class ProxyAgnosticMojangResolver extends MojangResolver {
/**
* A formatting string containing an URL used to call the {@code hasJoined} method on mojang session servers.
*
* Formatting parameters:
* 1. The username of the player in question
* 2. The serverId of this server
*/
public static final String MOJANG_SESSIONSERVER_HASJOINED_CALL_URLFMT = "https://sessionserver.mojang.com/session/minecraft/hasJoined?username=%s&serverId=%s";
@Override
public Optional<Verification> hasJoined(String username, String serverHash, InetAddress hostIp) throws IOException
{
String url = String.format("https://sessionserver.mojang.com/session/minecraft/hasJoined?username=%s&serverId=%s", username, serverHash);
String url = String.format(MOJANG_SESSIONSERVER_HASJOINED_CALL_URLFMT, username, serverHash);
HttpURLConnection conn = this.getConnection(url);
int responseCode = conn.getResponseCode();
Verification verification = null;
if(responseCode != 204)
// Mojang session servers send HTTP 204 (NO CONTENT) when the authentication seems invalid
// If that's not our case, the authentication is valid, and so we can parse the response.
if(responseCode != HttpURLConnection.HTTP_NO_CONTENT)
verification = this.parseRequest(conn, this::parseVerification);
return Optional.ofNullable(verification);
}
// Functional implementation of InputStreamAction
// Functional implementation of InputStreamAction, used in hasJoined method in parseRequest call
protected Verification parseVerification(InputStream input) throws IOException
{
return this.readJson(input, Verification.class);