From c35dc54923068658910b49f43c51e7c36f48bcfb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?rich=CE=9Brd?= <info@richardramos.me>
Date: Wed, 16 Oct 2024 17:55:04 -0400
Subject: [PATCH] fix: add a limit of max 10 content topics per query (#3117)

---
 waku/waku_archive/archive.nim | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/waku/waku_archive/archive.nim b/waku/waku_archive/archive.nim
index 604f8a82b7..53053585f9 100644
--- a/waku/waku_archive/archive.nim
+++ b/waku/waku_archive/archive.nim
@@ -22,6 +22,7 @@ logScope:
 const
   DefaultPageSize*: uint = 20
   MaxPageSize*: uint = 100
+  MaxContentTopicsPerQuery*: int = 10
 
   # Retention policy
   WakuArchiveDefaultRetentionPolicyInterval* = chronos.minutes(30)
@@ -125,6 +126,9 @@ proc findMessages*(
     if cursor == EmptyWakuMessageHash:
       return err(ArchiveError.invalidQuery("all zeroes cursor hash"))
 
+    if query.contentTopics.len > MaxContentTopicsPerQuery:
+      return err(ArchiveError.invalidQuery("too many content topics"))
+
   let maxPageSize =
     if query.pageSize <= 0:
       DefaultPageSize