Merge pull request #231 from simoleo89/fix/navigator-inputs

fix(navigator): bound search inputs

Emulator/src/main/java/com/eu/habbo/messages/incoming/navigator/AddSavedSearchEvent.java

@@ -14,11 +14,8 @@ public class AddSavedSearchEvent extends MessageHandler {
 
     @Override
     public void handle() throws Exception {
-        String searchCode = this.packet.readString();
-        String filter = this.packet.readString();
-
-        if (searchCode.length() > 255) searchCode = searchCode.substring(0, 255);
-        if (filter.length() > 255) filter = filter.substring(0, 255);
+        String searchCode = NavigatorInputGuard.normalizeSavedSearchValue(this.packet.readString());
+        String filter = NavigatorInputGuard.normalizeSavedSearchValue(this.packet.readString());
 
         if (this.client.getHabbo().getHabboInfo().getSavedSearches().size() >= MAX_SAVED_SEARCHES) {
             this.client.sendResponse(new NewNavigatorSavedSearchesComposer(this.client.getHabbo().getHabboInfo().getSavedSearches()));

Emulator/src/main/java/com/eu/habbo/messages/incoming/navigator/NavigatorInputGuard.java

@@ -0,0 +1,26 @@
+package com.eu.habbo.messages.incoming.navigator;
+
+final class NavigatorInputGuard {
+    static final int MAX_SEARCH_LENGTH = 64;
+    static final int MAX_SAVED_SEARCH_LENGTH = 255;
+
+    private NavigatorInputGuard() {
+    }
+
+    static String normalizeSearch(String value) {
+        return normalize(value, MAX_SEARCH_LENGTH);
+    }
+
+    static String normalizeSavedSearchValue(String value) {
+        return normalize(value, MAX_SAVED_SEARCH_LENGTH);
+    }
+
+    private static String normalize(String value, int maxLength) {
+        if (value == null) {
+            return "";
+        }
+
+        String normalized = value.trim();
+        return normalized.length() > maxLength ? normalized.substring(0, maxLength) : normalized;
+    }
+}

Emulator/src/main/java/com/eu/habbo/messages/incoming/navigator/SearchRoomsByTagEvent.java

@@ -7,7 +7,7 @@ import com.eu.habbo.messages.outgoing.navigator.PrivateRoomsComposer;
 public class SearchRoomsByTagEvent extends MessageHandler {
     @Override
     public void handle() throws Exception {
-        String tag = this.packet.readString();
+        String tag = NavigatorInputGuard.normalizeSearch(this.packet.readString());
 
         this.client.sendResponse(new PrivateRoomsComposer(Emulator.getGameEnvironment().getRoomManager().getRoomsWithTag(tag)));
     }

Emulator/src/main/java/com/eu/habbo/messages/incoming/navigator/SearchRoomsEvent.java

@@ -34,36 +34,43 @@ public class SearchRoomsEvent extends MessageHandler {
 
     @Override
     public void handle() throws Exception {
-        String name = this.packet.readString();
+        String name = NavigatorInputGuard.normalizeSearch(this.packet.readString());
 
         String prefix = "";
         String query = name;
         ArrayList<Room> rooms;
 
+        if (name.startsWith("owner:")) {
+            query = NavigatorInputGuard.normalizeSearch(name.substring("owner:".length()));
+            prefix = "owner:";
+        } else if (name.startsWith("tag:")) {
+            query = NavigatorInputGuard.normalizeSearch(name.substring("tag:".length()));
+            prefix = "tag:";
+        } else if (name.startsWith("group:")) {
+            query = NavigatorInputGuard.normalizeSearch(name.substring("group:".length()));
+            prefix = "group:";
+        }
+
+        String cacheKey = buildCacheKey(prefix, query);
+
         ServerMessage message = null;
         Map<String, ServerMessage> rankCache = cachedResults.get(this.client.getHabbo().getHabboInfo().getRank());
         if (rankCache != null) {
-            message = rankCache.get((name + "\t" + query).toLowerCase());
+            message = rankCache.get(cacheKey);
         } else {
             rankCache = createLRUCache();
             cachedResults.put(this.client.getHabbo().getHabboInfo().getRank(), rankCache);
         }
 
         if (message == null) {
-            if (name.startsWith("owner:")) {
-                query = name.split("owner:")[1];
-                prefix = "owner:";
-                rooms = (ArrayList<Room>) Emulator.getGameEnvironment().getRoomManager().getRoomsForHabbo(name);
-            } else if (name.startsWith("tag:")) {
-                query = name.split("tag:")[1];
-                prefix = "tag:";
-                rooms = Emulator.getGameEnvironment().getRoomManager().getRoomsWithTag(name);
-            } else if (name.startsWith("group:")) {
-                query = name.split("group:")[1];
-                prefix = "group:";
-                rooms = Emulator.getGameEnvironment().getRoomManager().getGroupRoomsWithName(name);
+            if (prefix.equals("owner:")) {
+                rooms = (ArrayList<Room>) Emulator.getGameEnvironment().getRoomManager().getRoomsForHabbo(query);
+            } else if (prefix.equals("tag:")) {
+                rooms = Emulator.getGameEnvironment().getRoomManager().getRoomsWithTag(query);
+            } else if (prefix.equals("group:")) {
+                rooms = Emulator.getGameEnvironment().getRoomManager().getGroupRoomsWithName(query);
             } else {
-                rooms = Emulator.getGameEnvironment().getRoomManager().getRoomsWithName(name);
+                rooms = Emulator.getGameEnvironment().getRoomManager().getRoomsWithName(query);
             }
 
             message = new PrivateRoomsComposer(rooms).compose();
@@ -73,7 +80,7 @@ public class SearchRoomsEvent extends MessageHandler {
                 map = createLRUCache();
             }
 
-            map.put((name + "\t" + query).toLowerCase(), message);
+            map.put(cacheKey, message);
             cachedResults.put(this.client.getHabbo().getHabboInfo().getRank(), map);
 
             NavigatorSearchResultEvent event = new NavigatorSearchResultEvent(this.client.getHabbo(), prefix, query, rooms);
@@ -84,4 +91,8 @@ public class SearchRoomsEvent extends MessageHandler {
 
         this.client.sendResponse(message);
     }
-}
+
+    private static String buildCacheKey(String prefix, String query) {
+        return (prefix + "\t" + query).toLowerCase();
+    }
+}

Emulator/src/test/java/com/eu/habbo/messages/incoming/navigator/NavigatorInputGuardTest.java

@@ -0,0 +1,21 @@
+package com.eu.habbo.messages.incoming.navigator;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class NavigatorInputGuardTest {
+    @Test
+    void searchValuesAreTrimmedAndBounded() {
+        assertEquals("", NavigatorInputGuard.normalizeSearch(null));
+        assertEquals("rare", NavigatorInputGuard.normalizeSearch("  rare  "));
+        assertEquals(NavigatorInputGuard.MAX_SEARCH_LENGTH, NavigatorInputGuard.normalizeSearch("a".repeat(100)).length());
+    }
+
+    @Test
+    void savedSearchValuesUseLargerBound() {
+        assertEquals("", NavigatorInputGuard.normalizeSavedSearchValue(null));
+        assertEquals("owner:duckie", NavigatorInputGuard.normalizeSavedSearchValue(" owner:duckie "));
+        assertEquals(NavigatorInputGuard.MAX_SAVED_SEARCH_LENGTH, NavigatorInputGuard.normalizeSavedSearchValue("a".repeat(400)).length());
+    }
+}

Emulator/src/test/java/com/eu/habbo/messages/incoming/navigator/NavigatorSearchInputContractTest.java

@@ -0,0 +1,37 @@
+package com.eu.habbo.messages.incoming.navigator;
+
+import org.junit.jupiter.api.Test;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class NavigatorSearchInputContractTest {
+    @Test
+    void classicSearchNormalizesInputAndPassesUnprefixedQueriesToManagers() throws Exception {
+        String source = Files.readString(Path.of("src/main/java/com/eu/habbo/messages/incoming/navigator/SearchRoomsEvent.java"));
+
+        assertTrue(source.contains("NavigatorInputGuard.normalizeSearch(this.packet.readString())"),
+                "classic room search must normalize raw client text before cache or manager lookups");
+        assertTrue(source.contains("getRoomsForHabbo(query)"),
+                "owner search must pass only the unprefixed owner query");
+        assertTrue(source.contains("getRoomsWithTag(query)"),
+                "tag search must pass only the unprefixed tag query");
+        assertTrue(source.contains("getGroupRoomsWithName(query)"),
+                "group search must pass only the unprefixed group query");
+        assertTrue(source.contains("buildCacheKey(prefix, query)"),
+                "classic room search must cache using normalized prefix/query pairs");
+    }
+
+    @Test
+    void savedAndTagSearchesNormalizeText() throws Exception {
+        String saved = Files.readString(Path.of("src/main/java/com/eu/habbo/messages/incoming/navigator/AddSavedSearchEvent.java"));
+        String tag = Files.readString(Path.of("src/main/java/com/eu/habbo/messages/incoming/navigator/SearchRoomsByTagEvent.java"));
+
+        assertTrue(saved.contains("NavigatorInputGuard.normalizeSavedSearchValue"),
+                "saved searches must trim and bound search code/filter values");
+        assertTrue(tag.contains("NavigatorInputGuard.normalizeSearch"),
+                "tag search must trim and bound tag values");
+    }
+}