From 6126bb65139030a1c3e89342b7bab726d77af966 Mon Sep 17 00:00:00 2001
From: Alexandre Paillier <alexandre.paillier@ledger.fr>
Date: Mon, 9 Oct 2023 17:58:28 +0200
Subject: [PATCH] Added a find_selector function to the plugin SDK

---
 src_plugin_sdk/utils.c | 28 ++++++++++++++++++++++++++++
 src_plugin_sdk/utils.h | 27 +++++++++++++++++++++++++++
 tools/build_sdk.py     |  2 ++
 3 files changed, 57 insertions(+)
 create mode 100644 src_plugin_sdk/utils.c
 create mode 100644 src_plugin_sdk/utils.h

diff --git a/src_plugin_sdk/utils.c b/src_plugin_sdk/utils.c
new file mode 100644
index 000000000..059430efd
--- /dev/null
+++ b/src_plugin_sdk/utils.c
@@ -0,0 +1,28 @@
+/*****************************************************************************
+ *   Ledger Plugin SDK
+ *   (c) 2023 Ledger SAS
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+#include "utils.h"
+
+bool find_selector(uint32_t selector, const uint32_t *array, size_t size, size_t *idx) {
+    for (size_t i = 0; i < size; ++i) {
+        if (selector == array[i]) {
+            if (idx != NULL) *idx = i;
+            return true;
+        }
+    }
+    return false;
+}
diff --git a/src_plugin_sdk/utils.h b/src_plugin_sdk/utils.h
new file mode 100644
index 000000000..e2816f91d
--- /dev/null
+++ b/src_plugin_sdk/utils.h
@@ -0,0 +1,27 @@
+/*****************************************************************************
+ *   Ledger Plugin SDK
+ *   (c) 2023 Ledger SAS
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+#ifndef UTILS_H_
+#define UTILS_H_
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+bool find_selector(uint32_t selector, const uint32_t *array, size_t size, size_t *idx);
+
+#endif  // UTILS_H_
diff --git a/tools/build_sdk.py b/tools/build_sdk.py
index bc3af58cc..225ef5d39 100755
--- a/tools/build_sdk.py
+++ b/tools/build_sdk.py
@@ -210,6 +210,8 @@ def merge_c_files(sources, nodes_to_extract):
 
     files_to_copy = [
         "main.c",
+        "utils.c",
+        "utils.h",
     ]
 
     for file in files_to_copy: