Split projects.

1 files changed, 75 insertions, 0 deletions

diff --git a/src/main/java/net/elytrium/limboauth/utils/UpdatesChecker.java b/src/main/java/net/elytrium/limboauth/utils/UpdatesChecker.java
new file mode 100644
index 0000000..71af1bb
--- /dev/null
+++ b/src/main/java/net/elytrium/limboauth/utils/UpdatesChecker.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2021 Elytrium
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.elytrium.limboauth.utils;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.URL;
+import java.net.URLConnection;
+import java.nio.charset.StandardCharsets;
+import java.util.concurrent.TimeUnit;
+import net.elytrium.limboauth.Settings;
+import org.slf4j.Logger;
+
+public class UpdatesChecker {
+
+  public static void checkForUpdates(Logger logger) {
+    try {
+      URLConnection conn = new URL("https://raw.githubusercontent.com/Elytrium/LimboAuth/master/VERSION").openConnection();
+      int timeout = (int) TimeUnit.SECONDS.toMillis(5);
+      conn.setConnectTimeout(timeout);
+      conn.setReadTimeout(timeout);
+      try (BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), StandardCharsets.UTF_8))) {
+        String latestVersion = in.readLine();
+        if (latestVersion == null) {
+          logger.warn("Unable to check for updates.");
+          return;
+        }
+        String latestVersion0 = getCleanVersion(latestVersion.trim());
+        String currentVersion0 = getCleanVersion(Settings.IMP.VERSION);
+        int latestVersionId = Integer.parseInt(latestVersion0.replace(".", "").replace("$", ""));
+        int currentVersionId = Integer.parseInt(currentVersion0.replace(".", "").replace("$", ""));
+        if (latestVersion0.endsWith("$")) {
+          --latestVersionId;
+        }
+        if (currentVersion0.endsWith("$")) {
+          --currentVersionId;
+        }
+
+        if (currentVersionId < latestVersionId) {
+          logger.error("****************************************");
+          logger.warn("The new LimboAuth update was found, please update.");
+          logger.error("https://github.com/Elytrium/LimboAuth/releases/");
+          logger.error("****************************************");
+        }
+      }
+    } catch (IOException e) {
+      logger.warn("Unable to check for updates.", e);
+    }
+  }
+
+  private static String getCleanVersion(String version) {
+    int indexOf = version.indexOf("-");
+    if (indexOf > 0) {
+      return version.substring(0, indexOf) + "$"; // "$" - Indicates that the version is snapshot
+    } else {
+      return version;
+    }
+  }
+}