From 7edf5021b204d9825282243c4ee384c1f0106991 Mon Sep 17 00:00:00 2001
From: Marco Cetica <ceticamarco@gmail.com>
Date: Mon, 16 Oct 2023 10:11:15 +0200
Subject: [PATCH] Fixed checksum function

---
 backup.sh | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/backup.sh b/backup.sh
index e92a063..2e9e494 100755
--- a/backup.sh
+++ b/backup.sh
@@ -34,7 +34,7 @@ set -e
 
 # Check if dependencies are installed
 missing_dep=0
-deps=("rsync" "tar" "gpg" "md5sum")
+deps=("rsync" "tar" "gpg")
 
 for dep in "${deps[@]}"; do
     if ! command -v "$dep" > /dev/null 2>&1; then
@@ -47,6 +47,20 @@ if [ $missing_dep -ne 0 ]; then
     exit 1
 fi
 
+checksum() {
+    BACKUP_SH_FILENAME="$1"
+    BACKUP_SH_OS="$(uname)"
+    BACKUP_SH_OS="${BACKUP_SH_OS^^}"
+
+    if [[ $BACKUP_SH_OS == "LINUX" ]]; then
+        RES="$(md5sum "$BACKUP_SH_FILENAME" | awk '{print $1}')"
+    else
+        RES="$(md5 -q "$BACKUP_SH_FILENAME")"
+    fi
+
+    echo "$RES"
+}
+
 make_backup() {
     BACKUP_SH_SOURCES_PATH="$1"
     BACKUP_SH_OUTPATH="$2"
@@ -119,7 +133,7 @@ make_backup() {
     BACKUP_SH_END_TIME="$(date +%s)"
     BACKUP_SH_FILE_SIZE="$(find "$BACKUP_SH_FILENAME" -exec ls -l {} \; |  awk '{print $5}')"
     BACKUP_SH_FILE_SIZE_H="$(find "$BACKUP_SH_FILENAME" -exec ls -lh {} \; | awk '{print $5}')"
-    BACKUP_SH_HASH="$(md5sum "$BACKUP_SH_FILENAME" | awk '{print $1}')"
+    BACKUP_SH_HASH="$(checksum "$BACKUP_SH_FILENAME")"
 
     echo "File name: $BACKUP_SH_FILENAME"
     echo "File size: $BACKUP_SH_FILE_SIZE($BACKUP_SH_FILE_SIZE_H)"