Allow null content key

api/src/main/java/org/geysermc/geyser/api/pack/PackCodec.java

@@ -26,6 +26,7 @@
 package org.geysermc.geyser.api.pack;
 
 import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
 import org.geysermc.geyser.api.GeyserApi;
 
 import java.io.IOException;
@@ -84,11 +85,11 @@ public abstract class PackCodec {
      * Creates a new pack provider from the given url and content key.
      *
      * @param url the url to create the pack provider from
-     * @param contentKey the content key, leave empty if pack is not encrypted
+     * @param contentKey the content key, leave empty or null if pack is not encrypted
      * @return the new pack provider
      */
     @NonNull
-    public static PackCodec url(@NonNull String url, @NonNull String contentKey) {
+    public static PackCodec url(@NonNull String url, @Nullable String contentKey) {
         return GeyserApi.api().provider(UrlPackCodec.class, url, contentKey);
     }
 }

api/src/main/java/org/geysermc/geyser/api/pack/UrlPackCodec.java

@@ -34,10 +34,10 @@ import org.checkerframework.checker.nullness.qual.NonNull;
  * Due to Bedrock limitations, the URL must:
  * <ul>
  *     <li>be a direct download link to a .zip or .mcpack resource pack</li>
- *     <li>Use application type `application/zip` and set a correct content length</li>
+ *     <li>use the application type `application/zip` and set a correct content length</li>
  * </ul>
  *
- * Additionally, the ResourcePack must be zipped in a folder enclosing the resource pack, instead of the resource pack being at the root of the zip.
+ * Additionally, the resource pack must be zipped in a folder enclosing the resource pack, instead of the resource pack being at the root of the zip.
  */
 public abstract class UrlPackCodec extends PackCodec {
 
@@ -51,7 +51,8 @@ public abstract class UrlPackCodec extends PackCodec {
 
     /**
      * If the remote pack has an encryption key, it must be specified here.
-     * Otherwise, leave empty.
+     * This will return empty if none is specified.
+     *
      * @return the encryption key of the resource pack
      */
     @NonNull

core/src/main/java/org/geysermc/geyser/pack/url/GeyserUrlPackCodec.java

@@ -27,6 +27,7 @@ package org.geysermc.geyser.pack.url;
 
 import lombok.Getter;
 import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
 import org.geysermc.geyser.GeyserImpl;
 import org.geysermc.geyser.api.pack.ResourcePack;
 import org.geysermc.geyser.api.pack.UrlPackCodec;
@@ -47,9 +48,13 @@ public class GeyserUrlPackCodec extends UrlPackCodec {
         this(url, "");
     }
 
-    public GeyserUrlPackCodec(String url, String contentKey) throws IllegalArgumentException {
+    public GeyserUrlPackCodec(@NonNull String url, @Nullable String contentKey) throws IllegalArgumentException {
+        //noinspection ConstantValue - need to enforce
+        if (url == null) {
+            throw new IllegalArgumentException("Url cannot be nulL!");
+        }
         this.url = url;
-        this.contentKey = contentKey;
+        this.contentKey = contentKey == null ? "" : contentKey;
     }
 
     @Override

core/src/main/java/org/geysermc/geyser/util/WebUtils.java

@@ -155,7 +155,7 @@ public class WebUtils {
                         String cachedEtag = metadataLines.get(1);
                         long cachedLastModified = Long.parseLong(metadataLines.get(2));
 
-                        if (cachedSize == size && cachedEtag.equals(con.getHeaderField("ETag")) && cachedLastModified == con.getLastModified()) {
+                        if (cachedSize == size && cachedEtag.equals(con.getHeaderField("ETag")) && cachedLastModified == con.getLastModified() && !force) {
                             GeyserImpl.getInstance().getLogger().debug("Using cached pack for " + url);
                             return packLocation;
                         }
@@ -168,7 +168,7 @@ public class WebUtils {
                 Files.copy(in, packLocation, StandardCopyOption.REPLACE_EXISTING);
 
                 if (Files.size(packLocation) != size) {
-                    GeyserImpl.getInstance().getLogger().error("Downloaded pack has " + Files.size(packLocation) + " bytes, expected " + size + " bytes");
+                    GeyserImpl.getInstance().getLogger().error(String.format("Size mismatch with resource pack at url: %s. Downloaded pack has %s bytes, expected %s bytes!", url, Files.size(packLocation), size));
                     Files.delete(packLocation);
                     return null;
                 }
@@ -186,7 +186,6 @@ public class WebUtils {
                 GeyserImpl.getInstance().getLogger().error("Unable to reach URL: " + url + " (" + e.getMessage() + ")");
                 return null;
             } catch (IOException e) {
-                e.printStackTrace(); // TODO yeeeeeeeet
                 throw new RuntimeException("Unable to download and save remote resource pack from: " + url + " (" + e.getMessage() + ")");
             }
         });

core/src/main/resources/config.yml

@@ -178,6 +178,7 @@ force-resource-packs: true
 # A list of links to send to the client to download resource packs from.
 # These must be direct links to the resource pack, not a link to a page containing the resource pack.
 # If you enter a link here, Geyser will download the resource pack once to check if it's in a valid format.
+# See https://wiki.geysermc.org/geyser/packs for more info.
 resource-pack-urls:
   # Example: GeyserOptionalPack
   - "https://ci.opencollab.dev/job/GeyserMC/job/GeyserOptionalPack/job/master/lastSuccessfulBuild/artifact/GeyserOptionalPack.mcpack"