Added user-agents

Author: North-West-Wind

src/ml/northwestwind/Constants.java

@@ -6,7 +6,7 @@
 
 public class Constants {
     public static final String CURSEFORGE_API = "https://northwestwind.ml/api/curseforge/mods/";
-    public static final String VERSION = "1.3.1";
+    public static final String VERSION = "1.3.2";
     private static final String OS = System.getProperty("os.name").toLowerCase();
     public static final boolean IS_WINDOWS = (OS.contains("win"));
     public static final boolean IS_MAC = (OS.contains("mac"));

src/ml/northwestwind/Utils.java

@@ -8,6 +8,7 @@
 
 import java.io.*;
 import java.net.HttpURLConnection;
+import java.net.MalformedURLException;
 import java.net.URL;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
@@ -49,6 +50,7 @@ public static String downloadFile(String fileURL, String saveDir) throws IOExcep
     public static String downloadFile(String fileURL, String saveDir, String name) throws IOException {
         URL url = new URL(fileURL.replace(" ", "%20"));
         HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
+        httpConn.addRequestProperty("User-Agent", "Mozilla/5.0");
         int responseCode = httpConn.getResponseCode();
         String saveFilePath = null;
 
@@ -160,7 +162,7 @@ public static Object readJsonFromUrl(String url) {
 
     public static Object readJsonFromUrl(String url, boolean printError) {
         JSONParser parser = new JSONParser();
-        try (InputStream is = new URL(url).openStream()) {
+        try (InputStream is = readStreamFromUrl(url)) {
             BufferedReader rd = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8));
             String jsonText = readAll(rd);
             return parser.parse(jsonText);
@@ -170,6 +172,12 @@ public static Object readJsonFromUrl(String url, boolean printError) {
         }
     }
 
+    private static InputStream readStreamFromUrl(String url) throws IOException {
+        HttpURLConnection httpcon = (HttpURLConnection) new URL(url).openConnection();
+        httpcon.addRequestProperty("User-Agent", "Mozilla/5.0");
+        return httpcon.getInputStream();
+    }
+
     public static boolean isMCVersionValid(String ver) {
         String[] splitted = ver.replace("-Snapshot", "").split("\\.");
         if (splitted.length > 3) return false;

update.json

@@ -1,10 +1,14 @@
 {
+  "1.3.2": {
+    "title": "Added User-Agent to requests",
+    "description": "This should fix the 403 error some users are receiving."
+  },
   "1.3.1": {
     "title": "Hotfix for profile update error"
   },
   "1.3.0": {
     "title": "Better version control & Adapting to new API",
-    "description": "You can now install modpacks with a modpack ZIP ID"
+    "description": "You can now install modpacks with a modpack ZIP ID."
   },
   "1.2.12": {
     "title": "Fixed null downloadUrl",
@@ -54,5 +58,5 @@
   "1.2.0": {
     "title": "Update Checker & Profile Generator"
   },
-  "latest": "1.3.1"
+  "latest": "1.3.2"
 }