marco/backup.py
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Migrated to '/bin/sh'

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Marco Cetica
2024-02-27 10:03:12 +01:00
parent 0918139225
commit 39a15d2f2a
5 changed files with 150 additions and 220 deletions
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152
backup.sh
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@@ -1,4 +1,4 @@
#!/usr/bin/env bash
#!/bin/sh -e
# backup.sh is a POSIX compliant, modular and lightweight
# backup utility to save and encrypt your files.
#
@@ -27,32 +27,31 @@
#
# You can read the full guide on https://github.com/ice-bit/backup.sh
# or on the manual page.
# Copyright (c) 2018,2023 Marco Cetica <email@marcocetica.com>
# Copyright (c) 2018,2023,2024 Marco Cetica <email@marcocetica.com>
#
set -e
checkdeps() {
# Check if dependencies are installed
missing_dep=0
deps="rsync tar gpg"
# Check if dependencies are installed
missing_dep=0
deps=("rsync" "tar" "gpg")
for dep in $deps; do
if ! command -v "$dep" > /dev/null 2>&1; then
printf "Cannot find '%s', please install it.\n" "$dep"
missing_dep=1
fi
done
for dep in "${deps[@]}"; do
if ! command -v "$dep" > /dev/null 2>&1; then
echo "Cannot find '$dep', please install it."
missing_dep=1
if [ $missing_dep -ne 0 ]; then
exit 1
fi
done
if [ $missing_dep -ne 0 ]; then
exit 1
fi
}
checksum() {
BACKUP_SH_FILENAME="$1"
BACKUP_SH_OS="$(uname)"
BACKUP_SH_OS="${BACKUP_SH_OS^^}"
BACKUP_SH_OS="$(uname | tr '[:lower:]' '[:upper:]')"
if [[ $BACKUP_SH_OS == "LINUX" ]]; then
if [ "$BACKUP_SH_OS" = "LINUX" ]; then
RES="$(md5sum "$BACKUP_SH_FILENAME" | awk '{print $1}')"
else
RES="$(md5 -q "$BACKUP_SH_FILENAME")"
@@ -72,8 +71,6 @@ make_backup() {
BACKUP_SH_START_TIME="$(date +%s)"
BACKUP_SH_FILENAME="$BACKUP_SH_OUTPATH/backup-$(uname -n)-$BACKUP_SH_DATE.tar.gz.enc"
declare -A BACKUP_SH_SOURCES
# Check for root permissions
if [ "$(id -u)" -ne 0 ]; then
echo "Run this tool as root!"
@@ -86,28 +83,22 @@ make_backup() {
exit 1
fi
# Read associative array from file
readarray -t lines < "$BACKUP_SH_SOURCES_PATH"
for line in "${lines[@]}"; do
label=${line%%=*}
path=${line#*=}
BACKUP_SH_SOURCES[$label]=$path
done
# Create temporary directory
mkdir -p "$BACKUP_SH_OUTPUT"
# For each item in the array, make a backup
BACKUP_SH_TOTAL=$(wc -l < "$BACKUP_SH_SOURCES_PATH")
BACKUP_SH_PROGRESS=1
for item in "${!BACKUP_SH_SOURCES[@]}"; do
while IFS='=' read -r label path; do
# Define a subdir for each backup entry
BACKUP_SH_SUBDIR="$BACKUP_SH_OUTPUT/backup-$item-$BACKUP_SH_DATE"
BACKUP_SH_SUBDIR="$BACKUP_SH_OUTPUT/backup-$label-$BACKUP_SH_DATE"
mkdir -p "$BACKUP_SH_SUBDIR"
echo "Copying $item($BACKUP_SH_PROGRESS/${#BACKUP_SH_SOURCES[*]})"
$BACKUP_SH_COMMAND "${BACKUP_SH_SOURCES[$item]}" "$BACKUP_SH_SUBDIR"
printf "Copying %s(%s/%s)\n" "$label" "$BACKUP_SH_PROGRESS" "$BACKUP_SH_TOTAL"
$BACKUP_SH_COMMAND "$path" "$BACKUP_SH_SUBDIR"
BACKUP_SH_PROGRESS=$((BACKUP_SH_PROGRESS+1))
done
done < "$BACKUP_SH_SOURCES_PATH"
# Compress backup directory
echo "Compressing backup..."
@@ -121,7 +112,7 @@ make_backup() {
--cipher-algo=AES256 \
--no-symkey-cache \
--pinentry-mode=loopback \
--batch --passphrase-fd 3 3<<< "$BACKUP_SH_PASS" \
--batch --passphrase "$BACKUP_SH_PASS" \
--output "$BACKUP_SH_FILENAME" \
"$BACKUP_SH_OUTPATH/backup.sh.tar.gz" > /dev/null 2>&1
@@ -138,7 +129,7 @@ make_backup() {
echo "File name: $BACKUP_SH_FILENAME"
echo "File size: $BACKUP_SH_FILE_SIZE($BACKUP_SH_FILE_SIZE_H)"
echo "File hash: $BACKUP_SH_HASH"
echo "Elapsed time: $(("$BACKUP_SH_END_TIME" - "$BACKUP_SH_START_TIME")) seconds."
printf "Elapsed time: %s seconds.\n" "$((BACKUP_SH_END_TIME - BACKUP_SH_START_TIME))"
}
extract_backup() {
@@ -150,7 +141,7 @@ extract_backup() {
--decrypt \
--no-symkey-cache \
--pinentry-mode=loopback \
--batch --passphrase-fd 3 3<<<"$BACKUP_SH_ARCHIVE_PW" \
--batch --passphrase "$BACKUP_SH_ARCHIVE_PW" \
--output backup.sh.tar.gz \
"$BACKUP_SH_ARCHIVE_PATH"
@@ -178,49 +169,56 @@ Report bugs to: Marco Cetica(<email@marcocetica.com>)
EOF
}
main() {
# Check whether dependecies are installed
checkdeps
if [ $# -eq 0 ]; then
echo "Please, specify an argument."
echo "For more information, try --help."
exit 1
fi
if [ $# -eq 0 ]; then
echo "Please, specify an argument."
echo "For more information, try --help."
exit 1
fi
# Parse CLI arguments
while [ $# -gt 0 ]; do
case $1 in
-b|--backup)
BACKUP_SH_SOURCES_PATH="$2"
BACKUP_SH_OUTPATH="$3"
BACKUP_SH_PASSWORD="$4"
# Parse CLI arguments
while [ $# -gt 0 ]; do
case $1 in
-b|--backup)
BACKUP_SH_SOURCES_PATH="$2"
BACKUP_SH_OUTPATH="$3"
BACKUP_SH_PASSWORD="$4"
if [ -z "$BACKUP_SH_SOURCES_PATH" ] || [ -z "$BACKUP_SH_OUTPATH" ] || [ -z "$BACKUP_SH_PASSWORD" ]; then
echo "Please, specify a source file, an output path and a password."
echo "For more informatio, try --help"
if [ -z "$BACKUP_SH_SOURCES_PATH" ] || [ -z "$BACKUP_SH_OUTPATH" ] || [ -z "$BACKUP_SH_PASSWORD" ]; then
echo "Please, specify a source file, an output path and a password."
echo "For more informatio, try --help"
exit 1
fi
make_backup "$BACKUP_SH_SOURCES_PATH" "$BACKUP_SH_OUTPATH" "$BACKUP_SH_PASSWORD"
exit 0
;;
-e|--extract)
BACKUP_SH_ARCHIVE_PATH="$2"
BACKUP_SH_ARCHIVE_PW="$3"
if [ -z "$BACKUP_SH_ARCHIVE_PATH" ] || [ -z "$BACKUP_SH_ARCHIVE_PW" ]; then
echo "Please, specify an encrypted archive and a password."
echo "For more informatio, try --help"
exit 1
fi
extract_backup "$BACKUP_SH_ARCHIVE_PATH" "$BACKUP_SH_ARCHIVE_PW"
exit 0
;;
-h|--help)
helper "$0"
exit 0
;;
*)
echo "Unknown option $1."
echo "For more information, try --help"
exit 1
fi
make_backup "$BACKUP_SH_SOURCES_PATH" "$BACKUP_SH_OUTPATH" "$BACKUP_SH_PASSWORD"
exit 0
;;
-e|--extract)
BACKUP_SH_ARCHIVE_PATH="$2"
BACKUP_SH_ARCHIVE_PW="$3"
;;
esac
done
}
if [ -z "$BACKUP_SH_ARCHIVE_PATH" ] || [ -z "$BACKUP_SH_ARCHIVE_PW" ]; then
echo "Please, specify an encrypted archive and a password."
echo "For more informatio, try --help"
exit 1
fi
extract_backup "$BACKUP_SH_ARCHIVE_PATH" "$BACKUP_SH_ARCHIVE_PW"
exit 0
;;
-h|--help)
helper "$0"
exit 0
;;
*)
echo "Unknown option $1."
echo "For more information, try --help"
exit 1
;;
esac
done
main "$@"
# vim: ts=4 sw=4 softtabstop=4 expandtab: