marco/backup.py
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- Fixed bug related to Bash version that affected Darwin systems;
- Fixed bug with file existence check;
- Fixed minor issues;
- Fixed various typos;
- Added verbose mode;
- Added packages for Debian and RHEL.
This commit is contained in:
Marco Cetica
2024-10-21 12:05:16 +02:00
parent 2bb255840d
commit e783c2a176
8 changed files with 242 additions and 254 deletions
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75
backup.sh
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@@ -37,6 +37,11 @@
set -e
checkdeps() {
if [ "${BASH_VERSINFO[0]}" -lt 4 ]; then
echo "This version of Bash is not supported."
exit 1
fi
# Check if dependencies are installed
missing_dep=0
deps="rsync tar gpg"
@@ -66,13 +71,20 @@ gethash() {
# $2: output path
# $3: password
# $4: compute sha256(0,1)
# $5: verbosity flag(0,1)
make_backup() {
BACKUP_SH_SOURCES_PATH="$1"
BACKUP_SH_OUTPATH="$2"
BACKUP_SH_PASS="$3"
BACKUP_SH_SHA256="$4"
BACKUP_SH_VERBOSE="$5"
if [ "$BACKUP_SH_VERBOSE" -eq 1 ]; then
BACKUP_SH_COMMAND="rsync -aPhr --delete"
else
BACKUP_SH_COMMAND="rsync -aPhrq --delete"
fi
BACKUP_SH_COMMAND="rsync -aPhrq --delete"
BACKUP_SH_DATE="$(date +'%Y%m%d')"
BACKUP_SH_FOLDER="backup.sh.tmp"
BACKUP_SH_OUTPUT="$BACKUP_SH_OUTPATH/$BACKUP_SH_FOLDER"
@@ -119,8 +131,13 @@ make_backup() {
# Compress backup directory
echo "Compressing backup..."
tar -czf "$BACKUP_SH_OUTPATH/backup.sh.tar.gz" \
-C "$BACKUP_SH_OUTPATH" "$BACKUP_SH_FOLDER" > /dev/null 2>&1
if [ "$BACKUP_SH_VERBOSE" -eq 1 ]; then
tar -cvzf "$BACKUP_SH_OUTPATH/backup.sh.tar.gz" \
-C "$BACKUP_SH_OUTPATH" "$BACKUP_SH_FOLDER"
else
tar -czf "$BACKUP_SH_OUTPATH/backup.sh.tar.gz" \
-C "$BACKUP_SH_OUTPATH" "$BACKUP_SH_FOLDER" > /dev/null 2>&1
fi
# Encrypt backup directory
echo "Encrypting backup..."
@@ -151,10 +168,12 @@ make_backup() {
# $1: archive file
# $2: archive password
# $3: sha256 file(optional)
# $4: verbosity flag(0,1)
extract_backup() {
BACKUP_SH_ARCHIVE_PATH="$1"
BACKUP_SH_ARCHIVE_PW="$2"
BACKUP_SH_SHA256_FILE="$3"
BACKUP_SH_VERBOSE="$4"
# Decrypt the archive
gpg -a \
@@ -167,7 +186,11 @@ extract_backup() {
"$BACKUP_SH_ARCHIVE_PATH"
# Extract archive
tar -xzf backup.sh.tar.gz 1> /dev/null 2>&1
if [ "$BACKUP_SH_VERBOSE" -eq 1 ]; then
tar -xzvf backup.sh.tar.gz
else
tar -xzf backup.sh.tar.gz > /dev/null 2>&1
fi
# If specified, use SHA256 file to compute checksum of files
if [ -n "$BACKUP_SH_SHA256_FILE" ]; then
@@ -179,10 +202,11 @@ extract_backup() {
SHA256="$(gethash "$file")"
# Check if checksum file contains hash
if ! grep -wq "$SHA256" "$BACKUP_SH_SHA256_FILE"; then
printf "[FATAL] - integrity error for '%s'.\n" "$file"
rm -rf backup.sh.tar.gz backup.sh.tmp
printf "[FATAL] - integrity error for '%s'.\n" "$file"
exit 1
fi
printf "[OK] - integrity check for '%s' passed.\n" "$file"
done
shopt -u globstar dotglob
fi
@@ -194,13 +218,14 @@ helper() {
CLI_NAME="$1"
cat <<EOF
backup.sh - POSIX compliant, modular and lightweight backup utility.
backup.sh v1.0.0 - POSIX compliant, modular and lightweight backup utility.
Syntax: $CLI_NAME [-b|-c|-e|-h]
Syntax: $CLI_NAME [-b|-e|-c|-V|-h]
options:
-b|--backup SOURCES DEST PASS Backup folders from SOURCES file.
-c|--checksum Generate/check SHA256 of a backup.
-e|--extract ARCHIVE PASS Extract ARCHIVE using PASS.
-c|--checksum Generate/check SHA256 of a backup.
-V|--verbose Enable verbose mode.
-h|--help Show this helper.
General help with the software: https://github.com/ceticamarco/backup.sh
@@ -219,6 +244,7 @@ main() {
fi
CHECKSUM_FLAG=0
VERBOSE_FLAG=0
# Parse CLI arguments
while [ $# -gt 0 ]; do
case $1 in
@@ -233,20 +259,11 @@ main() {
exit 1
fi
if [ "$CHECKSUM_FLAG" -eq 1 ]; then
[ -f "$BACKUP_SH_SOURCES_PATH" ] || { echo "Sources file does not exist"; exit 1; }
make_backup "$BACKUP_SH_SOURCES_PATH" "$BACKUP_SH_OUTPATH" "$BACKUP_SH_PASSWORD" 1
else
make_backup "$BACKUP_SH_SOURCES_PATH" "$BACKUP_SH_OUTPATH" "$BACKUP_SH_PASSWORD" 0
fi
[ -f "$BACKUP_SH_SOURCES_PATH" ] || { echo "Sources file does not exist"; exit 1; }
make_backup "$BACKUP_SH_SOURCES_PATH" "$BACKUP_SH_OUTPATH" "$BACKUP_SH_PASSWORD" "$CHECKSUM_FLAG" "$VERBOSE_FLAG"
exit 0
;;
-c|--checksum)
[ $# -eq 1 ] && { echo "Use this option with '--backup' or '--extract'"; exit 1; }
CHECKSUM_FLAG=1
shift 1
;;
-e|--extract)
BACKUP_SH_ARCHIVE_FILE="$2"
BACKUP_SH_ARCHIVE_PW="$3"
@@ -261,21 +278,33 @@ main() {
else
if [ -z "$BACKUP_SH_ARCHIVE_FILE" ] || [ -z "$BACKUP_SH_ARCHIVE_PW" ]; then
echo "Please, specify an encrypted archive and a password."
echo "For more informatio, try --help"
echo "For more information, try --help"
exit 1
fi
fi
# Check whether backup file exists or not
[ -f "$BACKUP_SH_ARCHIVE_FILE" ] || { echo "Backup file does not exist"; exit 1; }
if [ "$CHECKSUM_FLAG" -eq 1 ]; then
[ -f "$BACKUP_SH_SHA256_FILE" ] || { echo "Checksum file does not exist"; exit 1; }
[ -f "$BACKUP_SH_ARCHIVE_FILE" ] || { echo "Backup file does not exist"; exit 1; }
extract_backup "$BACKUP_SH_ARCHIVE_FILE" "$BACKUP_SH_ARCHIVE_PW" "$BACKUP_SH_SHA256_FILE"
extract_backup "$BACKUP_SH_ARCHIVE_FILE" "$BACKUP_SH_ARCHIVE_PW" "$BACKUP_SH_SHA256_FILE" "$VERBOSE_FLAG"
else
extract_backup "$BACKUP_SH_ARCHIVE_FILE" "$BACKUP_SH_ARCHIVE_PW"
extract_backup "$BACKUP_SH_ARCHIVE_FILE" "$BACKUP_SH_ARCHIVE_PW" "" "$VERBOSE_FLAG"
fi
exit 0
;;
-c|--checksum)
[ $# -eq 1 ] && { echo "Use '--checksum' with '--backup' or '--extract'"; exit 1; }
CHECKSUM_FLAG=1
shift 1
;;
-V|--verbose)
[ $# -eq 1 ] && { echo "Use '--verbose' with '--backup' or '--extract'"; exit 1; }
VERBOSE_FLAG=1
shift 1
;;
-h|--help)
helper "$0"
exit 0