fix: Sanitize topic value before making db query (#10481)

* Sanitize topic value before making db query

* Process review comment

apps/explorer/lib/explorer/etherscan/logs.ex

@@ -275,6 +275,8 @@ defmodule Explorer.Etherscan.Logs do
   }
 
   defp where_topic_match(query, filter) do
+    filter = sanitize_filter_topics(filter)
+
     case Enum.filter(@topics, &filter[&1]) do
       [] ->
         query
@@ -287,6 +289,46 @@ defmodule Explorer.Etherscan.Logs do
     end
   end
 
+  defp sanitize_filter_topics(filter) do
+    @topics
+    |> Enum.reduce(filter, fn topic, acc ->
+      topic_value = filter[topic]
+
+      sanitized_value =
+        topic_value
+        |> List.wrap()
+        |> Enum.map(&sanitize_topic_value/1)
+        |> Enum.reject(&is_nil/1)
+        |> case do
+          [] -> nil
+          [topic] -> topic
+          topics -> topics
+        end
+
+      Map.put(acc, topic, sanitized_value)
+    end)
+  end
+
+  defp sanitize_topic_value(topic_value) do
+    case topic_value do
+      %Explorer.Chain.Hash{} ->
+        topic_value
+
+      _ ->
+        sanitize_string_topic_value(topic_value)
+    end
+  end
+
+  defp sanitize_string_topic_value(topic_value) do
+    case Chain.string_to_block_hash(topic_value) do
+      {:ok, _} ->
+        topic_value
+
+      _ ->
+        nil
+    end
+  end
+
   defp where_multiple_topics_match(query, filter) do
     Enum.reduce(Map.keys(@topic_operations), query, fn topic_operation, acc_query ->
       where_multiple_topics_match(acc_query, filter, topic_operation, filter[topic_operation])