forked from LogBlock/LogBlock
80 lines
2.7 KiB
Java
80 lines
2.7 KiB
Java
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package de.diddiz.util;
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import org.json.simple.JSONArray;
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import org.json.simple.JSONObject;
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import org.json.simple.parser.JSONParser;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.nio.ByteBuffer;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.UUID;
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// Adapted from https://gist.github.com/evilmidget38/26d70114b834f71fb3b4
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public class UUIDFetcher {
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private static final String PROFILE_URL = "https://api.mojang.com/profiles/minecraft";
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private static final JSONParser jsonParser = new JSONParser();
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public static Map<String, UUID> getUUIDs(List<String> names) throws Exception {
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Map<String, UUID> uuidMap = new HashMap<String, UUID>();
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HttpURLConnection connection = createConnection();
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String body = JSONArray.toJSONString(names);
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writeBody(connection, body);
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JSONArray array = (JSONArray) jsonParser.parse(new InputStreamReader(connection.getInputStream()));
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for (Object profile : array) {
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JSONObject jsonProfile = (JSONObject) profile;
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String id = (String) jsonProfile.get("id");
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String name = (String) jsonProfile.get("name");
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UUID uuid = UUIDFetcher.getUUID(id);
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uuidMap.put(name, uuid);
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}
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return uuidMap;
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}
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private static void writeBody(HttpURLConnection connection, String body) throws Exception {
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OutputStream stream = connection.getOutputStream();
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stream.write(body.getBytes());
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stream.flush();
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stream.close();
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}
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private static HttpURLConnection createConnection() throws Exception {
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URL url = new URL(PROFILE_URL);
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HttpURLConnection connection = (HttpURLConnection) url.openConnection();
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connection.setRequestMethod("POST");
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connection.setRequestProperty("Content-Type", "application/json");
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connection.setUseCaches(false);
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connection.setDoInput(true);
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connection.setDoOutput(true);
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return connection;
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}
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private static UUID getUUID(String id) {
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return UUID.fromString(id.substring(0, 8) + "-" + id.substring(8, 12) + "-" + id.substring(12, 16) + "-" + id.substring(16, 20) + "-" + id.substring(20, 32));
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}
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public static byte[] toBytes(UUID uuid) {
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ByteBuffer byteBuffer = ByteBuffer.wrap(new byte[16]);
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byteBuffer.putLong(uuid.getMostSignificantBits());
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byteBuffer.putLong(uuid.getLeastSignificantBits());
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return byteBuffer.array();
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}
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public static UUID fromBytes(byte[] array) {
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if (array.length != 16) {
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throw new IllegalArgumentException("Illegal byte array length: " + array.length);
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}
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ByteBuffer byteBuffer = ByteBuffer.wrap(array);
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long mostSignificant = byteBuffer.getLong();
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long leastSignificant = byteBuffer.getLong();
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return new UUID(mostSignificant, leastSignificant);
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}
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}
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