328 lines
8.7 KiB
Bash
Executable File
328 lines
8.7 KiB
Bash
Executable File
#!/usr/bin/env sh
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# shellcheck disable=SC1091
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[ -f /etc/profile ] && . /etc/profile
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set -e
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script_dir="$(CDPATH="" cd -- "$(dirname -- "$0")" && pwd -P)"
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usage() {
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check_directories
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cat <<EOF
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USAGE:
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${0} [options] FILENAME
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Copy and edit the stock config file named: FILENAME
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if FILENAME is already copied, it will be edited as-is.
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Stock config files at: '${NETDATA_STOCK_CONFIG_DIR}'
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User config files at: '${NETDATA_USER_CONFIG_DIR}'
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The editor to use can be specified either by setting the EDITOR
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environment variable, or by using the --editor option.
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The file to edit can also be specified using the --file option.
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For a list of known config files, run '${0} --list'
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EOF
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exit 0
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}
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error() {
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echo >&2 "ERROR: ${1}"
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}
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abspath() {
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if [ -d "${1}/" ]; then
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echo "$(cd "${1}" && /usr/bin/env PWD= pwd -P)/"
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elif [ -f "${1}" ]; then
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echo "$(cd "$(dirname "${1}")" && /usr/bin/env PWD= pwd -P)/$(basename "${1}")"
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elif echo "${1}" | grep -q '/'; then
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if echo "${1}" | grep -q '^/'; then
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mkdir -p "$(dirname "${1}")"
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echo "$(cd "$(dirname "${1}")" && /usr/bin/env PWD= pwd -P)/$(basename "${1}")"
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else
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mkdir -p "${script_dir}/$(dirname "${1}")"
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echo "${script_dir}/${1}"
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fi
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else
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echo "${script_dir}/${1}"
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fi
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}
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is_prefix() {
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echo "${2}" | grep -qE "^${1}"
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return $?
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}
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check_directories() {
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if [ -f "${script_dir}/.container-hostname" ]; then
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NETDATA_USER_CONFIG_DIR="${script_dir}"
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NETDATA_STOCK_CONFIG_DIR="/usr/lib/netdata/conf.d"
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return
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fi
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if [ -e "${script_dir}/.environment" ]; then
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OLDPATH="${PATH}"
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# shellcheck disable=SC1091
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. "${script_dir}/.environment"
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PATH="${OLDPATH}"
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fi
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if [ -n "${NETDATA_PREFIX}" ] && [ -d "${NETDATA_PREFIX}/usr/lib/netdata/conf.d" ]; then
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stock_dir="${NETDATA_PREFIX}/usr/lib/netdata/conf.d"
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elif [ -n "${NETDATA_PREFIX}" ] && [ -d "${NETDATA_PREFIX}/lib/netdata/conf.d" ]; then
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stock_dir="${NETDATA_PREFIX}/lib/netdata/conf.d"
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elif [ -d "${script_dir}/../../usr/lib/netdata/conf.d" ]; then
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stock_dir="${script_dir}/../../usr/lib/netdata/conf.d"
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elif [ -d "${script_dir}/../../lib/netdata/conf.d" ]; then
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stock_dir="${script_dir}/../../lib/netdata/conf.d"
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elif [ -d "/usr/lib/netdata/conf.d" ]; then
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stock_dir="/usr/lib/netdata/conf.d"
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fi
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[ -z "${NETDATA_USER_CONFIG_DIR}" ] && NETDATA_USER_CONFIG_DIR="${script_dir}"
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[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="${stock_dir}"
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if [ -z "${NETDATA_STOCK_CONFIG_DIR}" ]; then
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error "Unable to find stock config directory."
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exit 1
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fi
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}
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check_editor() {
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if [ -z "${editor}" ]; then
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if [ -n "${EDITOR}" ] && command -v "${EDITOR}" >/dev/null 2>&1; then
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editor="${EDITOR}"
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elif command -v editor >/dev/null 2>&1; then
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editor="editor"
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elif command -v vi >/dev/null 2>&1; then
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editor="vi"
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else
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error "Unable to find a usable editor, tried \${EDITOR} (${EDITOR}), editor, and vi."
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exit 1
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fi
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elif ! command -v "${editor}" >/dev/null 2>&1; then
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error "Unable to locate user specified editor ${editor}, is it in your PATH?"
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exit 1
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fi
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}
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running_in_container() {
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[ -e /.dockerenv ] && return 0
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[ -e /.dockerinit ] && return 0
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[ -e /run/.containerenv ] && return 0
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[ -r /proc/1/environ ] && tr '\000' '\n' </proc/1/environ | grep -Eiq 'container=' && return 0
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grep -qF -e /docker/ -e /libpod- /proc/self/cgroup 2>/dev/null && return 0
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return 1
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}
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get_docker_command() {
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if [ -x "${docker}" ]; then
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return 0
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elif command -v docker >/dev/null 2>&1; then
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docker="$(command -v docker)"
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elif command -v podman >/dev/null 2>&1; then
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docker="$(command -v podman)"
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else
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error "Unable to find a usable container tool stack. I support Docker and Podman."
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exit 1
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fi
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}
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run_in_container() {
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${docker} exec "${1}" /bin/sh -c "${2}" || return 1
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return 0
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}
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check_for_container() {
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get_docker_command
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${docker} container inspect "${1}" >/dev/null 2>&1 || return 1
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run_in_container "${1}" "[ -d \"${NETDATA_STOCK_CONFIG_DIR}\" ]" >/dev/null 2>&1 || return 1
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return 0
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}
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handle_container() {
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if running_in_container; then
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return 0
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elif [ -z "${container}" ] && [ -f "${script_dir}/.container-hostname" ]; then
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echo >&2 "Autodetected containerized Netdata instance. Attempting to autodetect container ID."
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possible_container="$(cat "${script_dir}/.container-hostname")"
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if check_for_container "${possible_container}"; then
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container="${possible_container}"
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elif check_for_container netdata; then
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container="netdata"
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else
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error "Could not autodetect container ID. It must be supplied on the command line with the --container option."
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exit 1
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fi
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echo >&2 "Found Netdata container with ID or name ${container}"
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elif [ -n "${container}" ]; then
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if ! check_for_container "${container}"; then
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error "No container with ID or name ${container} exists."
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exit 1
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fi
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fi
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}
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list_files() {
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check_directories
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handle_container
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if test -t && command -v tput > /dev/null 2>&1; then
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width="$(tput cols)"
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fi
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if [ -z "${container}" ]; then
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if [ "$(uname -s)" = "Linux" ]; then
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# shellcheck disable=SC2046,SC2086
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files="$(cd "${NETDATA_STOCK_CONFIG_DIR}" && ls ${width:+-C} ${width:+-w ${width}} $(find . -type f | cut -d '/' -f 2-))"
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elif [ "$(uname -s)" = "FreeBSD" ]; then
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if [ -n "${width}" ]; then
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export COLUMNS="${width}"
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fi
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# shellcheck disable=SC2046
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files="$(cd "${NETDATA_STOCK_CONFIG_DIR}" && ls ${width:+-C} $(find . -type f | cut -d '/' -f 2-))"
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else
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# shellcheck disable=SC2046
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files="$(cd "${NETDATA_STOCK_CONFIG_DIR}" && ls $(find . -type f | cut -d '/' -f 2-))"
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fi
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else
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files="$(run_in_container "${container}" "cd /usr/lib/netdata/conf.d && ls ${width:+-C} ${width:+-w ${width}} \$(find . -type f | cut -d '/' -f 2-)")"
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fi
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if [ -z "${files}" ]; then
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error "Failed to find any configuration files."
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exit 1
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fi
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cat <<EOF
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The following configuration files are known to this script:
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${files}
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EOF
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exit 0
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}
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parse_args() {
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while [ -n "${1}" ]; do
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case "${1}" in
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"--help") usage ;;
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"--list") list_files ;;
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"--file")
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if [ -n "${2}" ]; then
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file="${2}"
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shift 1
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else
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error "No file specified to edit."
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exit 1
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fi
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;;
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"--container")
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if [ -n "${2}" ]; then
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container="${2}"
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shift 1
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else
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error "No container ID or name specified with the --container option."
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exit 1
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fi
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;;
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"--editor")
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if [ -n "${2}" ]; then
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editor="${2}"
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shift 1
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else
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error "No editor specified with the --editor option."
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exit 1
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fi
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;;
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*)
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if [ -z "${2}" ]; then
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file="${1}"
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else
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error "Unrecognized option ${1}."
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exit 1
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fi
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;;
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esac
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shift 1
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done
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[ -z "${file}" ] && usage
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absfile="$(abspath "${file}")"
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if ! is_prefix "${script_dir}" "${absfile}"; then
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error "${file} is not located under ${script_dir}"
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exit 1
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fi
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file="${absfile##"${script_dir}"}"
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}
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copy_native() {
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if [ ! -w "${NETDATA_USER_CONFIG_DIR}" ]; then
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error "Cannot write to ${NETDATA_USER_CONFIG_DIR}!"
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exit 1
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fi
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if [ -f "${NETDATA_STOCK_CONFIG_DIR}/${1}" ]; then
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echo >&2 "Copying '${NETDATA_STOCK_CONFIG_DIR}/${1}' to '${NETDATA_USER_CONFIG_DIR}/${1}' ... "
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cp -p "${NETDATA_STOCK_CONFIG_DIR}/${1}" "${NETDATA_USER_CONFIG_DIR}/${1}" || exit 1
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else
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echo >&2 "Creating empty '${NETDATA_USER_CONFIG_DIR}/${1}' ... "
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touch "${NETDATA_USER_CONFIG_DIR}/${1}" || exit 1
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fi
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}
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copy_container() {
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if [ ! -w "${NETDATA_USER_CONFIG_DIR}" ]; then
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error "Cannot write to ${NETDATA_USER_CONFIG_DIR}!"
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exit 1
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fi
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if run_in_container "${container}" "[ -f \"${NETDATA_STOCK_CONFIG_DIR}/${1}\" ]"; then
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echo >&2 "Copying '${NETDATA_STOCK_CONFIG_DIR}/${1}' to '${NETDATA_USER_CONFIG_DIR}/${1}' ... "
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${docker} cp -a "${container}:${NETDATA_STOCK_CONFIG_DIR}/${1}" "${NETDATA_USER_CONFIG_DIR}/${1}" || exit 1
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else
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echo >&2 "Creating empty '${NETDATA_USER_CONFIG_DIR}/${1}' ... "
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touch "${NETDATA_USER_CONFIG_DIR}/${1}" || exit 1
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fi
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}
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copy() {
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if [ -f "${NETDATA_USER_CONFIG_DIR}/${1}" ]; then
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return 0
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elif [ -n "${container}" ]; then
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copy_container "${1}"
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else
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copy_native "${1}"
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fi
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}
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edit() {
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echo >&2 "Editing '${1}' ..."
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# check we can edit
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if [ ! -w "${1}" ]; then
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error "Cannot write to ${1}!"
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exit 1
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fi
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"${editor}" "${1}"
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exit $?
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}
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main() {
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parse_args "${@}"
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check_directories
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check_editor
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handle_container
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copy "${file}"
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edit "${absfile}"
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}
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main "${@}"
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