1
0
Fork 0
mirror of synced 2024-12-13 02:45:45 -05:00
yadm/contrib/hooks/post_encrypt
2019-12-27 23:39:06 +01:00

82 lines
2.1 KiB
Bash
Executable file

#!/usr/bin/env bash
# yadm - Yet Another Dotfiles Manager
# Copyright (C) 2015-2019 Tim Byrne and Martin Zuther
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
YADM_DIRECTORY=$(dirname $YADM_HOOK_REPO)
YADM_CHECKSUMS=$YADM_DIRECTORY/files.checksums
CHECKSUM_ALGORITHM="512256"
CHECKSUM_ALGORITHM_NAME="SHA-512/256"
WARNING_MESSAGE="No checksums were created."
function print_warning_and_exit {
MESSAGE=$1
# set output color to yellow
echo -e "\033[1;33m"
echo "WARNING: $MESSAGE $WARNING_MESSAGE"
# reset output color
echo -e "\033[0m"
exit $YADM_HOOK_EXIT
}
function ensure_command {
COMMAND_NAME=$1
# check if command exists
if ! command -v "$COMMAND_NAME" > /dev/null; then
print_warning_and_exit "command \"$COMMAND_NAME\" not found."
fi
}
function ensure_algorithm {
# check if "shasum" supports algorithm
echo -n | shasum --algorithm "$CHECKSUM_ALGORITHM" &> /dev/null
if [ $? -ne 0 ]; then
print_warning_and_exit "\"shasum\" does not support $CHECKSUM_ALGORITHM_NAME."
fi
}
# check if "shasum" exists and supports algorithm
ensure_command shasum
ensure_algorithm
# empty checksum file
echo -n > $YADM_CHECKSUMS
# calculate checksums for encrypted files
for included in "${YADM_ENCRYPT_INCLUDE_FILES[@]}"; do
shasum --algorithm $CHECKSUM_ALGORITHM $included >> $YADM_CHECKSUMS
# signal errors
if [ $? -ne 0 ]; then
exit $?
fi
done
echo "Wrote checksums: $YADM_CHECKSUMS ($CHECKSUM_ALGORITHM_NAME)"
# return exit status of the yadm command
exit $YADM_HOOK_EXIT