feat: display init for selfdestructed contracts.

CHANGELOG.md

@@ -22,6 +22,7 @@
 - [#1876](https://github.com/poanetwork/blockscout/pull/1876) - async calculate a count of blocks
 - [#1941](https://github.com/poanetwork/blockscout/pull/1941) - feat: add on demand fetching and stale attr to rpc
 - [#1952](https://github.com/poanetwork/blockscout/pull/1952) - feat: exclude empty contracts by default
+- [#1954](https://github.com/poanetwork/blockscout/pull/1954) - feat: use creation init on self destruct
 
 ### Fixes
 

apps/block_scout_web/lib/block_scout_web/templates/address_contract/index.html.eex

@@ -1,18 +1,25 @@
+<% contract_creation_code = contract_creation_code(@address) %>
+
 <section class="container">
   <%= render BlockScoutWeb.AddressView, "overview.html", assigns %>
 
   <div class="card">
     <%= render BlockScoutWeb.AddressView, "_tabs.html", assigns %>
     <div class="card-body">
-      <%= if !BlockScoutWeb.AddressView.smart_contract_verified?(@address) do %>
-        <%= link(
-              gettext("Verify & Publish"),
-              to: address_verify_contract_path(@conn, :new, @address.hash),
-              class: "button button-primary button-sm float-right ml-3",
-              "data-test": "verify_and_publish"
-            ) %>
+      <%= if match?({:selfdestructed, _}, contract_creation_code) do %>
+        <div class="button button-disabled button-sm float-right ml-3">
+          <%= gettext("Verify & Publish") %>
+        </div>
+      <% else %>
+        <%= if !BlockScoutWeb.AddressView.smart_contract_verified?(@address) do %>
+          <%= link(
+                gettext("Verify & Publish"),
+                to: address_verify_contract_path(@conn, :new, @address.hash),
+                class: "button button-primary button-sm float-right ml-3",
+                "data-test": "verify_and_publish"
+              ) %>
+        <% end %>
       <% end %>
-
       <%= if BlockScoutWeb.AddressView.smart_contract_verified?(@address) do %>
         <div class="mb-4">
           <dl class="row">
@@ -56,15 +63,32 @@
 
       <% end %>
       <section>
-        <div class="d-flex justify-content-between align-items-baseline">
-          <h3><%= gettext "Contract creation code" %></h3>
-          <button type="button" class="button button-secondary button-sm" id="button" data-clipboard-text="<%= @address.contract_code %>" aria-label="copy contract creation code">
-            <%= gettext "Copy Contract Creation Code" %>
-          </button>
-        </div>
-        <div class="tile tile-muted">
-          <pre class="pre-wrap pre-scrollable"><code class="nohighlight"><%= @address.contract_code %></code></pre>
-        </div>
+        <%= case contract_creation_code do %>
+          <% {:selfdestructed, transaction_init} -> %> 
+            <div class="d-flex justify-content-between align-items-baseline">
+              <h3><%= gettext "Contract Creation Code" %></h3>
+              <button type="button" class="button button-secondary button-sm" id="button" data-clipboard-text="<%= transaction_init %>" aria-label="copy contract creation code">
+                <%= gettext "Copy Contract Creation Code" %>
+              </button>
+            </div>
+            <div class="alert alert-info">
+              <p><%= gettext "Contracts that self destruct in their constructors have no contract code published and cannot be verified." %></p>
+              <p><%= gettext "Displaying the init data provided of the creating transaction." %></p>
+            </div>
+            <div class="tile tile-muted">
+              <pre class="pre-wrap pre-scrollable"><code class="nohighlight"><%= transaction_init %></code></pre>
+            </div>
+          <% {:ok, contract_code} -> %>
+            <div class="d-flex justify-content-between align-items-baseline">
+              <h3><%= gettext "Contract Byte Code" %></h3>
+              <button type="button" class="button button-secondary button-sm" id="button" data-clipboard-text="<%= contract_code %>" aria-label="copy contract creation code">
+                <%= gettext "Copy Contract Byte Code" %>
+              </button>
+            </div>
+            <div class="tile tile-muted">
+              <pre class="pre-wrap pre-scrollable"><code class="nohighlight"><%= contract_code %></code></pre>
+            </div>
+        <% end %>
       </section>
 
     </div>

apps/block_scout_web/lib/block_scout_web/views/address_contract_view.ex

@@ -1,6 +1,8 @@
 defmodule BlockScoutWeb.AddressContractView do
   use BlockScoutWeb, :view
 
+  alias Explorer.Chain.{Address, Data, InternalTransaction}
+
   def render("scripts.html", %{conn: conn}) do
     render_scripts(conn, "address_contract/code_highlighting.js")
   end
@@ -34,4 +36,15 @@ defmodule BlockScoutWeb.AddressContractView do
       {value, String.pad_leading(to_string(line), max_digits, " ")}
     end)
   end
+
+  def contract_creation_code(%Address{
+        contract_code: %Data{bytes: <<>>},
+        contracts_creation_internal_transaction: %InternalTransaction{init: init}
+      }) do
+    {:selfdestructed, init}
+  end
+
+  def contract_creation_code(%Address{contract_code: contract_code}) do
+    {:ok, contract_code}
+  end
 end

apps/block_scout_web/priv/gettext/default.pot

@@ -228,7 +228,7 @@ msgid "Compiler"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:23
+#: lib/block_scout_web/templates/address_contract/index.html.eex:30
 msgid "Compiler version"
 msgstr ""
 
@@ -256,7 +256,7 @@ msgid "Connection Lost, click to load newer validations"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:46
+#: lib/block_scout_web/templates/address_contract/index.html.eex:53
 msgid "Contract ABI"
 msgstr ""
 
@@ -289,17 +289,12 @@ msgid "Contract Name"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:60
-msgid "Contract creation code"
-msgstr ""
-
-#, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:19
+#: lib/block_scout_web/templates/address_contract/index.html.eex:26
 msgid "Contract name:"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:34
+#: lib/block_scout_web/templates/address_contract/index.html.eex:41
 msgid "Contract source code"
 msgstr ""
 
@@ -621,7 +616,7 @@ msgid "Older"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:27
+#: lib/block_scout_web/templates/address_contract/index.html.eex:34
 msgid "Optimization enabled"
 msgstr ""
 
@@ -982,7 +977,8 @@ msgid "Value"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:9
+#: lib/block_scout_web/templates/address_contract/index.html.eex:11
+#: lib/block_scout_web/templates/address_contract/index.html.eex:16
 msgid "Verify & Publish"
 msgstr ""
 
@@ -1047,7 +1043,7 @@ msgid "at"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/views/address_contract_view.ex:20
+#: lib/block_scout_web/views/address_contract_view.ex:22
 msgid "false"
 msgstr ""
 
@@ -1065,7 +1061,7 @@ msgid "string"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/views/address_contract_view.ex:19
+#: lib/block_scout_web/views/address_contract_view.ex:21
 msgid "true"
 msgstr ""
 
@@ -1509,17 +1505,17 @@ msgid "Support"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:48
+#: lib/block_scout_web/templates/address_contract/index.html.eex:55
 msgid "Copy ABI"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:62
+#: lib/block_scout_web/templates/address_contract/index.html.eex:71
 msgid "Copy Contract Creation Code"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:36
+#: lib/block_scout_web/templates/address_contract/index.html.eex:43
 msgid "Copy Source Code"
 msgstr ""
 
@@ -1745,3 +1741,28 @@ msgstr ""
 #: lib/block_scout_web/templates/common_components/_pagination_container.html.eex:37
 msgid "of"
 msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/address_contract/index.html.eex:83
+msgid "Contract Byte Code"
+msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/address_contract/index.html.eex:69
+msgid "Contract Creation Code"
+msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/address_contract/index.html.eex:75
+msgid "Contracts that self destruct in their constructors have no contract code published and cannot be verified."
+msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/address_contract/index.html.eex:85
+msgid "Copy Contract Byte Code"
+msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/address_contract/index.html.eex:76
+msgid "Displaying the init data provided of the creating transaction."
+msgstr ""

apps/block_scout_web/priv/gettext/en/LC_MESSAGES/default.po

@@ -228,7 +228,7 @@ msgid "Compiler"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:23
+#: lib/block_scout_web/templates/address_contract/index.html.eex:30
 msgid "Compiler version"
 msgstr ""
 
@@ -256,7 +256,7 @@ msgid "Connection Lost, click to load newer validations"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:46
+#: lib/block_scout_web/templates/address_contract/index.html.eex:53
 msgid "Contract ABI"
 msgstr ""
 
@@ -289,17 +289,12 @@ msgid "Contract Name"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:60
-msgid "Contract creation code"
-msgstr ""
-
-#, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:19
+#: lib/block_scout_web/templates/address_contract/index.html.eex:26
 msgid "Contract name:"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:34
+#: lib/block_scout_web/templates/address_contract/index.html.eex:41
 msgid "Contract source code"
 msgstr ""
 
@@ -621,7 +616,7 @@ msgid "Older"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:27
+#: lib/block_scout_web/templates/address_contract/index.html.eex:34
 msgid "Optimization enabled"
 msgstr ""
 
@@ -982,7 +977,8 @@ msgid "Value"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:9
+#: lib/block_scout_web/templates/address_contract/index.html.eex:11
+#: lib/block_scout_web/templates/address_contract/index.html.eex:16
 msgid "Verify & Publish"
 msgstr ""
 
@@ -1047,7 +1043,7 @@ msgid "at"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/views/address_contract_view.ex:20
+#: lib/block_scout_web/views/address_contract_view.ex:22
 msgid "false"
 msgstr ""
 
@@ -1065,7 +1061,7 @@ msgid "string"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/views/address_contract_view.ex:19
+#: lib/block_scout_web/views/address_contract_view.ex:21
 msgid "true"
 msgstr ""
 
@@ -1357,7 +1353,7 @@ msgid "Loading balances"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_coin_balance/index.html.eex:23
+#: lib/block_scout_web/templates/address_coin_balance/index.html.eex:22
 #: lib/block_scout_web/templates/chain/show.html.eex:13
 msgid "Loading chart"
 msgstr ""
@@ -1368,7 +1364,7 @@ msgid "There is no coin history for this address."
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_coin_balance/index.html.eex:26
+#: lib/block_scout_web/templates/address_coin_balance/index.html.eex:25
 #: lib/block_scout_web/templates/chain/show.html.eex:16
 msgid "There was a problem loading the chart."
 msgstr ""
@@ -1509,17 +1505,17 @@ msgid "Support"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:48
+#: lib/block_scout_web/templates/address_contract/index.html.eex:55
 msgid "Copy ABI"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:62
+#: lib/block_scout_web/templates/address_contract/index.html.eex:71
 msgid "Copy Contract Creation Code"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/address_contract/index.html.eex:36
+#: lib/block_scout_web/templates/address_contract/index.html.eex:43
 msgid "Copy Source Code"
 msgstr ""
 
@@ -1745,3 +1741,28 @@ msgstr ""
 #: lib/block_scout_web/templates/common_components/_pagination_container.html.eex:37
 msgid "of"
 msgstr ""
+
+#, elixir-format, fuzzy
+#: lib/block_scout_web/templates/address_contract/index.html.eex:83
+msgid "Contract Byte Code"
+msgstr ""
+
+#, elixir-format, fuzzy
+#: lib/block_scout_web/templates/address_contract/index.html.eex:69
+msgid "Contract Creation Code"
+msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/address_contract/index.html.eex:75
+msgid "Contracts that self destruct in their constructors have no contract code published and cannot be verified."
+msgstr ""
+
+#, elixir-format, fuzzy
+#: lib/block_scout_web/templates/address_contract/index.html.eex:85
+msgid "Copy Contract Byte Code"
+msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/address_contract/index.html.eex:76
+msgid "Displaying the init data provided of the creating transaction."
+msgstr ""

apps/explorer/lib/explorer/chain/internal_transaction/result.ex

@@ -19,7 +19,7 @@ defmodule Explorer.Chain.InternalTransaction.Result do
     {key, to_string(hash)}
   end
 
-  defp entry_to_raw({"code", _} = entry), do: entry
+  defp entry_to_raw({"code", code}), do: {"code", Data.to_string(code)}
 
   defp entry_to_raw({key, decimal}) when key in ~w(gasUsed) do
     integer =