Jafner.net/homelab/.sops/decrypt-filter.sh

34 lines
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Executable File

#!/bin/bash
# Takes file path from stdin
# Outputs to stdout
if ! [[ -f $1 ]]; then
echo "\$1 is not a file"
echo "\$1: $1"
exit 1
fi
# Set age key file path
# If no private key exists at the expected location,
# Create the key file at the expected location
SOPS_AGE_KEY_FILE=$HOME/.age/key
if [[ ! -f $SOPS_AGE_KEY_FILE ]]; then
age-keygen -o $SOPS_AGE_KEY_FILE
fi
export SOPS_AGE_KEY_FILE=$HOME/.age/key
# Set age directory and default recipients
AGE_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &> /dev/null && pwd)
SOPS_AGE_RECIPIENTS="$(<$AGE_DIR/.age-author-pubkeys)"
FILE_PATH=$(realpath $1)
# Check for host pubkey, add as recipient if present
if [[ -f "$AGE_DIR/../$(realpath -m --relative-to=$AGE_DIR $FILE_PATH | cut -d'/' -f2)/.age-pubkey" ]]; then
HOST_AGE_PUBKEY=$AGE_DIR/../$(realpath -m --relative-to=$AGE_DIR $FILE_PATH | cut -d'/' -f2)/.age-pubkey
HOST_AGE_PUBKEY=$(realpath $HOST_AGE_PUBKEY)
SOPS_AGE_RECIPIENTS="$SOPS_AGE_RECIPIENTS,$(<$HOST_AGE_PUBKEY)"
fi
sops --decrypt --age ${SOPS_AGE_RECIPIENTS} $FILE_PATH