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@ -31,21 +31,21 @@ IFS="$OLD_IFS"
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function get_checksum_command {
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# check if "shasum" exists and supports the algorithm (which is
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# tested by sending an empty string to "shasum")
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if command -v "shasum" > /dev/null && echo -n | shasum --algorithm "256" &> /dev/null; then
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echo "shasum --algorithm 256"
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if command -v "shasum" > /dev/null && printf "" | shasum --algorithm "256" &> /dev/null; then
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printf "shasum --algorithm 256"
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# check if "sha256sum" exists
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elif command -v "sha256sum" > /dev/null; then
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echo "sha256sum"
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printf "sha256sum"
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# check if "gsha256sum" exists
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elif command -v "gsha256sum" > /dev/null; then
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echo "gsha256sum"
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printf "gsha256sum"
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else
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# display warning in bright yellow
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echo -e "\033[1;33m" >&2
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echo -n "WARNING: \"shasum\", \"sha256sum\" and \"gsha256sum\" not found. $WARNING_MESSAGE." >&2
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printf "\033[1;33m" >&2
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printf "\nWARNING: \"shasum\", \"sha256sum\" and \"gsha256sum\" not found. %s\n" "$WARNING_MESSAGE." >&2
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# reset output color
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echo -e "\033[0m" >&2
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printf "\033[0m" >&2
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# signal error
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return 1
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@ -63,28 +63,28 @@ if (($?)); then
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fi
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# empty (or create) checksum file
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echo -n > "$YADM_CHECKSUMS"
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true > "$YADM_CHECKSUMS"
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# calculate checksums for encrypted files
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for included in "${YADM_ENCRYPT_INCLUDE_FILES[@]}"; do
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# highlight any errors in red
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echo -en "\033[0;31m"
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printf "\033[0;31m"
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# calculate checksums
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$CHECKSUM_COMMAND "$included" >> "$YADM_CHECKSUMS"
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ERROR_CODE=$?
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# reset output color
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echo -ne "\033[0m"
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printf "\033[0m"
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# handle errors
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if (($ERROR_CODE)); then
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# display warning in bright yellow
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echo -e "\033[1;33m" >&2
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echo -n "WARNING: an error occurred. Please inspect the checksum file." >&2
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printf "\033[1;33m" >&2
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printf "\nWARNING: an error occurred. Please inspect the checksum file.\n" >&2
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# reset output color
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echo -e "\033[0m" >&2
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printf "\033[0m" >&2
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# exit and signal error
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exit $ERROR_CODE
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@ -92,5 +92,5 @@ for included in "${YADM_ENCRYPT_INCLUDE_FILES[@]}"; do
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done
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# announce success and return original exit status of yadm command
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echo "Wrote SHA-256 checksums: $YADM_CHECKSUMS"
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printf "Wrote SHA-256 checksums: %s\n" "$YADM_CHECKSUMS"
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exit "$YADM_HOOK_EXIT"
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