1 files changed, 125 insertions, 0 deletions
diff --git a/nsframework/framework_unified/client/NS_UtilityCenter/src/ns_util_crc.cpp b/nsframework/framework_unified/client/NS_UtilityCenter/src/ns_util_crc.cpp
new file mode 100644
index 00000000..af823648
--- /dev/null
+++ b/nsframework/framework_unified/client/NS_UtilityCenter/src/ns_util_crc.cpp
@@ -0,0 +1,125 @@
+/*
+ * @copyright Copyright (c) 2016-2020 TOYOTA MOTOR CORPORATION.
+ *
+ * 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.
+ */
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// \ingroup  tag_NS_UtilityCenter
+/// \brief    This file contains implementation of APIs to calcuate 16-bit and 32-bit CRC checksum of file.
+///
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Include Files
+////////////////////////////////////////////////////////////////////////////////////////////////////
+#include <native_service/ns_util_crc.h>
+#include <stdio.h>
+
+// buffer size for reading from file
+#define MAX_BUFFER_SIZE 4096
+
+// Static 32 bit CRC lookup table
+UI_16 g_arr_crc16_table[256] = {
+};
+
+// Static 32 bit CRC lookup table
+UI_32 g_arr_crc32_table[256] = {
+};
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////
+/// CalculateCRC16
+/// This API calculates the 16 bit CRC checksum of a file
+////////////////////////////////////////////////////////////////////////////////////////////////
+EFrameworkunifiedStatus CalculateCRC16(PCSTR f_c_file_name, UI_16 &f_ui_check_sum) {  // NOLINT (readability/nolint)
+  EFrameworkunifiedStatus l_e_status = eFrameworkunifiedStatusOK;
+
+  CHAR l_c_buffer[MAX_BUFFER_SIZE] = {0};
+  size_t l_ui_bytes_read = 0;
+  FILE *l_p_file = NULL;
+
+  if (NULL != f_c_file_name) {
+    f_ui_check_sum = 0xFFFF;
+
+    // Open the file
+    l_p_file = fopen(f_c_file_name, "rbe");
+
+    if (NULL == l_p_file) {
+      l_e_status = eFrameworkunifiedStatusFileLoadError;
+    } else {
+      l_ui_bytes_read = fread(l_c_buffer, 1, sizeof(l_c_buffer), l_p_file);
+
+      while (0 != l_ui_bytes_read) {  // LCOV_EXCL_BR_LINE 11: not a branch
+        for (UI_32 l_ui_bytes_cnt = 0; l_ui_bytes_cnt < l_ui_bytes_read; l_ui_bytes_cnt++) {  // LCOV_EXCL_BR_LINE 11: not a branch
+          f_ui_check_sum = static_cast<UI_16>(
+                g_arr_crc16_table[((f_ui_check_sum >> 8) ^ l_c_buffer[l_ui_bytes_cnt]) & 0xFF] ^ (f_ui_check_sum << 8));
+        }
+
+        l_ui_bytes_read = fread(l_c_buffer, 1, sizeof(l_c_buffer), l_p_file);
+      }
+
+      fclose(l_p_file);
+      l_p_file = NULL;
+    }
+
+    f_ui_check_sum = static_cast<UI_16>(~f_ui_check_sum);
+  } else {
+    l_e_status = eFrameworkunifiedStatusInvldParam;
+  }
+
+  return l_e_status;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////
+/// CalculateCRC32
+/// This API calculates the 32 bit CRC checksum of a file
+////////////////////////////////////////////////////////////////////////////////////////////////
+EFrameworkunifiedStatus CalculateCRC32(PCSTR f_c_file_name, UI_32 &f_ui_check_sum) {  // NOLINT (readability/nolint)
+  EFrameworkunifiedStatus l_e_status = eFrameworkunifiedStatusOK;
+
+  CHAR l_c_buffer[MAX_BUFFER_SIZE] = {0};
+  size_t l_ui_bytes_read = 0;
+  FILE *l_p_file = NULL;
+
+  if (NULL != f_c_file_name) {
+    f_ui_check_sum = 0xFFFFFFFF;
+
+    // Open the file
+    l_p_file = fopen(f_c_file_name, "rbe");
+
+    if (NULL == l_p_file) {
+      l_e_status = eFrameworkunifiedStatusFileLoadError;
+    } else {
+      l_ui_bytes_read = fread(l_c_buffer, 1, sizeof(l_c_buffer), l_p_file);
+
+      while (0 != l_ui_bytes_read) {  // LCOV_EXCL_BR_LINE 11: not a branch
+        for (UI_32 l_ui_bytes_cnt = 0; l_ui_bytes_cnt < l_ui_bytes_read; l_ui_bytes_cnt++) {  // LCOV_EXCL_BR_LINE 11: not a branch
+          f_ui_check_sum = (f_ui_check_sum >> 8)
+            ^ g_arr_crc32_table[(l_c_buffer[l_ui_bytes_cnt] ^ f_ui_check_sum)  & 0xFF];
+        }
+
+        l_ui_bytes_read = fread(l_c_buffer, 1, sizeof(l_c_buffer), l_p_file);
+      }
+
+      fclose(l_p_file);
+      l_p_file = NULL;
+    }
+
+    f_ui_check_sum = ~f_ui_check_sum;
+  } else {
+    l_e_status = eFrameworkunifiedStatusInvldParam;
+  }
+
+  return l_e_status;
+}