Merge pull request #2864 from poanetwork/ab-add-instance-metadata-check

add token instance metadata check
blockscout · Nov 20, 2019 · 896dc1e · 896dc1e
2 parents 29faeff + ccc2014
commit 896dc1e
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -9,6 +9,7 @@
 - [#2822](https://github.com/poanetwork/blockscout/pull/2822) - Estimated address count on the main page, if cache is empty
 
 ### Fixes
+- [#2864](https://github.com/poanetwork/blockscout/pull/2864) - add token instance metadata type check
 - [#2855](https://github.com/poanetwork/blockscout/pull/2855) - Fix favicons load
 - [#2854](https://github.com/poanetwork/blockscout/pull/2854) - Fix all npm vulnerabilities
 - [#2851](https://github.com/poanetwork/blockscout/pull/2851) - Fix paths for front assets

diff --git a/apps/explorer/lib/explorer/token/instance_metadata_retriever.ex b/apps/explorer/lib/explorer/token/instance_metadata_retriever.ex
@@ -101,7 +101,11 @@ defmodule Explorer.Token.InstanceMetadataRetriever do
       {:ok, %Response{body: body, status_code: 200}} ->
         {:ok, json} = decode_json(body)
 
-        {:ok, %{metadata: json}}
+        if is_map(json) do
+          {:ok, %{metadata: json}}
+        else
+          {:error, :wrong_metadata_type}
+        end
 
       {:ok, %Response{body: body}} ->
         {:error, body}