mirror of
https://github.com/alexbelgium/hassio-addons.git
synced 2026-01-16 17:38:17 +01:00
Refactor global variable script for clarity
Refactor script for better readability and maintainability. Update logging messages and streamline environment variable handling.
This commit is contained in:
Alexandre
@@ -3,429 +3,199 @@
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set -e
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# -----------------------------------------------------------------------------
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################################################################################
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# Guard: only run inside Supervisor-managed add-ons
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# -----------------------------------------------------------------------------
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################################################################################
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if ! bashio::supervisor.ping 2>/dev/null; then
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echo "..."
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exit 0
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fi
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echo ""
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bashio::log.notice "This script converts add-on options (options.json) into environment variables."
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bashio::log.notice "Custom variables can be set using the env_vars option."
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bashio::log.notice "Additional informations : https://github.com/alexbelgium/hassio-addons/wiki/Add-Environment-variables-to-your-Addon-2"
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bashio::log.notice "Converting addon options to environment variables"
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bashio::log.notice "Supports custom env_vars"
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bashio::log.notice "https://github.com/alexbelgium/hassio-addons/wiki/Add-Environment-variables-to-your-Addon-2"
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echo ""
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# -----------------------------------------------------------------------------
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# Inputs / outputs
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# -----------------------------------------------------------------------------
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################################################################################
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# Inputs
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################################################################################
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JSONSOURCE="/data/options.json"
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ENV_FILE="/.env"
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ETC_ENV_FILE="/etc/environment"
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if [[ ! -f "$JSONSOURCE" ]]; then
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bashio::exit.nok "Missing ${JSONSOURCE}"
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fi
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if ! command -v jq >/dev/null 2>&1; then
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bashio::exit.nok "jq is required but not found"
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fi
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[[ -f "$JSONSOURCE" ]] || bashio::exit.nok "Missing $JSONSOURCE"
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command -v jq >/dev/null || bashio::exit.nok "jq is required"
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mkdir -p /etc
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touch "$ETC_ENV_FILE"
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# -----------------------------------------------------------------------------
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# mktemp helper (safe temp file creation)
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# -----------------------------------------------------------------------------
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################################################################################
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# Temp helper
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################################################################################
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mktemp_safe() {
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local tmpdir="${TMPDIR:-/tmp}"
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mkdir -p "$tmpdir" || return 1
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local tmpfile
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tmpfile="$(mktemp "$tmpdir/tmp.XXXXXXXXXX")" || return 1
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printf '%s\n' "$tmpfile"
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mkdir -p "$tmpdir"
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mktemp "$tmpdir/tmp.XXXXXXXXXX"
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}
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# -----------------------------------------------------------------------------
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# Secrets support:
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# - If an option value is "!secret foo", try to resolve it from secrets.yaml
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# -----------------------------------------------------------------------------
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################################################################################
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# Secrets support
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################################################################################
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SECRETSOURCE=""
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if [[ -f /homeassistant/secrets.yaml ]]; then
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SECRETSOURCE="/homeassistant/secrets.yaml"
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elif [[ -f /config/secrets.yaml ]]; then
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SECRETSOURCE="/config/secrets.yaml"
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fi
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[[ -f /homeassistant/secrets.yaml ]] && SECRETSOURCE="/homeassistant/secrets.yaml"
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[[ -z "$SECRETSOURCE" && -f /config/secrets.yaml ]] && SECRETSOURCE="/config/secrets.yaml"
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# -----------------------------------------------------------------------------
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# Injection block markers:
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# 1) EXPORT_BLOCK_*: injected into run scripts / bashrc so services inherit vars
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# 2) FILE_BLOCK_* : written into /.env and /etc/environment (idempotent)
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# -----------------------------------------------------------------------------
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BLOCK_BEGIN="# --- BEGIN ADDON ENV (generated) ---"
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BLOCK_END="# --- END ADDON ENV (generated) ---"
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FILE_BLOCK_BEGIN="# --- BEGIN ADDON ENV FILE (generated) ---"
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FILE_BLOCK_END="# --- END ADDON ENV FILE (generated) ---"
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EXPORT_BLOCK_FILE="$(mktemp_safe)"
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ENV_KV_FILE="$(mktemp_safe)"
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trap 'rm -f "$EXPORT_BLOCK_FILE" "$ENV_KV_FILE"' EXIT
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{
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echo "${BLOCK_BEGIN}"
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echo "# Do not edit: generated from ${JSONSOURCE}"
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echo "${BLOCK_END}"
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} > "${EXPORT_BLOCK_FILE}"
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# -----------------------------------------------------------------------------
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# Protected variables that should not be overwritten
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# -----------------------------------------------------------------------------
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declare -A PROTECTED_VARS=(
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["PATH"]=1
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["HOME"]=1
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["PWD"]=1
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["SHLVL"]=1
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["_"]=1
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["S6_BEHAVIOR_IF_STAGE2_FAILS"]=1
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)
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is_valid_env_name() {
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[[ "$1" =~ ^[A-Za-z_][A-Za-z0-9_]*$ ]]
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resolve_secret() {
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local v="$1" name line
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[[ "$v" =~ ^[[:space:]]*\!secret[[:space:]]+(.+)$ ]] || { printf '%s' "$v"; return; }
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name="${BASH_REMATCH[1]}"
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[[ -n "$SECRETSOURCE" ]] || bashio::exit.nok "Secrets not mounted"
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line="$(awk -v k="$name" '$1==k":"{sub("^[^:]+:[[:space:]]*","");print;exit}' "$SECRETSOURCE")"
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[[ -n "$line" ]] || bashio::exit.nok "Secret $name not found"
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printf '%s' "$line"
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}
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# Quote for shell *code* (for injection into scripts). Keep punctuation intact.
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# - single-line => single quotes
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# - multi-line => $'...\n...' (one physical line; safe for injection)
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shell_quote_for_code() {
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################################################################################
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# Quoting
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################################################################################
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dotenv_quote() {
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local v="$1"
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v="${v//\\/\\\\}"
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v="${v//\"/\\\"}"
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v="${v//$'\n'/\\n}"
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printf '"%s"' "$v"
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}
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shell_quote() {
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local s="$1"
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if [[ "$s" == *$'\n'* || "$s" == *$'\r'* || "$s" == *$'\t'* ]]; then
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s="${s//\\/\\\\}"
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s="${s//\'/\\\'}"
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s="${s//$'\n'/\\n}"
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s="${s//$'\r'/\\r}"
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s="${s//$'\t'/\\t}"
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printf "\$'%s'" "$s"
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return 0
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fi
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# single-quote with embedded '"'"' for literal '
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s="${s//\\/\\\\}"
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s="${s//\'/\'\"\'\"\' }"
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s="${s% }"
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printf "'%s'" "$s"
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}
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dotenv_quote() {
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# For /.env and /etc/environment: double quotes + minimal escaping
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local v="$1"
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v="${v//\\/\\\\}"
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v="${v//\"/\\\"}"
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v="${v//$'\n'/\\n}"
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v="${v//$'\r'/\\r}"
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printf '"%s"' "$v"
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}
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################################################################################
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# S6 + script injection block
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################################################################################
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BLOCK_BEGIN="# --- BEGIN ADDON ENV (generated) ---"
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BLOCK_END="# --- END ADDON ENV (generated) ---"
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resolve_secret_if_needed() {
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local v="$1"
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local name line
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if [[ "$v" =~ ^[[:space:]]*\!secret[[:space:]]+(.+)[[:space:]]*$ ]]; then
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name="${BASH_REMATCH[1]}"
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name="${name#\"}"; name="${name%\"}"
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name="${name#\'}"; name="${name%\'}"
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if [[ -z "${SECRETSOURCE}" ]]; then
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bashio::log.warning "Homeassistant config not mounted, secrets are not supported"
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printf '%s' "$v"
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return 0
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fi
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# Exact key match at start of line; ignore comments
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line="$(
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awk -v k="$name" '
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/^[[:space:]]*#/ {next}
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$0 ~ "^[[:space:]]*" k ":[[:space:]]*" {
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sub("^[[:space:]]*" k ":[[:space:]]*", "", $0)
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print
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exit
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}
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' "$SECRETSOURCE"
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)"
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[[ -z "$line" ]] && bashio::exit.nok "Secret '${name}' not found in ${SECRETSOURCE}"
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printf '%s' "$line"
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return 0
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fi
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printf '%s' "$v"
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}
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append_export_line_for_injection() {
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# Insert one export line right before BLOCK_END in EXPORT_BLOCK_FILE.
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# (kept as-is to preserve behavior; safe and idempotent block replacement)
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local key="$1"
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local value="$2"
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local quoted
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quoted="$(shell_quote_for_code "$value")"
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awk -v k="$key" -v q="$quoted" -v end="$BLOCK_END" '
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$0 == end { print "export " k "=" q }
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{ print }
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' "${EXPORT_BLOCK_FILE}" > "${EXPORT_BLOCK_FILE}.tmp"
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mv -f "${EXPORT_BLOCK_FILE}.tmp" "${EXPORT_BLOCK_FILE}"
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}
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is_shell_run_script() {
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local f="$1"
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local h
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h="$(head -n 1 "$f" 2>/dev/null || true)"
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[[ "$h" =~ ^#! ]] || return 1
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[[ "$h" =~ (sh|bash|with-contenv) ]] && return 0
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return 1
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}
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inject_block_into_file() {
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# Inject/replace the generated export block in a target script:
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# - If the block exists: replace it.
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# - If not: insert it right after the shebang (if present), else at top.
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local file="$1"
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local tmp
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tmp="$(mktemp_safe)"
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awk -v bfile="${EXPORT_BLOCK_FILE}" -v begin="${BLOCK_BEGIN}" -v end="${BLOCK_END}" '
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function print_block() {
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while ((getline l < bfile) > 0) print l
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close(bfile)
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}
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BEGIN { inblock=0; printed=0 }
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{
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if ($0 == begin) {
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inblock=1
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if (!printed) { print_block(); printed=1 }
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next
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}
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if ($0 == end) { inblock=0; next }
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if (inblock) next
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if (NR == 1) {
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if ($0 ~ /^#!/) {
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print $0
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if (!printed) { print_block(); printed=1 }
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next
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} else {
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if (!printed) { print_block(); printed=1 }
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print $0
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next
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}
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}
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print $0
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}
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END {
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if (!printed) print_block()
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}
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' "$file" > "$tmp"
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cat "$tmp" > "$file"
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rm -f "$tmp"
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}
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update_scripts_with_block() {
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# Inject the export block into common service scripts and entrypoints.
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local f
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local -A seen=()
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shopt -s nullglob
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# Includes legacy and newer s6 locations
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for f in /etc/services.d/*/run /etc/services.d/*/*run* /etc/cont-init.d/*.sh /etc/s6-overlay/s6-rc.d/*/run /*/entrypoint.sh /entrypoint.sh; do
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[[ -f "$f" ]] || continue
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[[ -n "${seen[$f]:-}" ]] && continue
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seen["$f"]=1
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if ! is_shell_run_script "$f"; then
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bashio::log.debug "Skipping non-shell script: $f"
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continue
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fi
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inject_block_into_file "$f"
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done
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shopt -u nullglob
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}
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replace_block_in_file() {
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# Replace (or add) a generated block inside a plain text file.
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# Used for /.env and /etc/environment to prevent infinite append growth.
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local file="$1"
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local begin="$2"
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local end="$3"
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local content_file="$4"
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local tmp
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tmp="$(mktemp_safe)"
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if [[ ! -f "$file" ]]; then
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touch "$file"
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fi
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awk -v bfile="$content_file" -v begin="$begin" -v end="$end" '
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function print_block() {
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while ((getline l < bfile) > 0) print l
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close(bfile)
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}
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BEGIN { inblock=0; printed=0 }
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{
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if ($0 == begin) {
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inblock=1
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if (!printed) { print_block(); printed=1 }
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next
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}
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if ($0 == end) { inblock=0; next }
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if (inblock) next
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print $0
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}
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END { if (!printed) print_block() }
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' "$file" > "$tmp"
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cat "$tmp" > "$file"
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rm -f "$tmp"
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}
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export_option() {
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# Core exporter:
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# - validates key
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# - resolves secrets
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# - logs (redacted if sensitive unless verbose)
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# - exports into current process
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# - exports into s6 environment
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# - queues key/value for generated /.env and /etc/environment blocks
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# - adds export into injection block for scripts
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local key="$1"
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local value="$2"
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if [[ -n "${PROTECTED_VARS[$key]:-}" ]]; then
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bashio::log.warning "Skipping protected environment variable: ${key}"
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return 0
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fi
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if ! is_valid_env_name "$key"; then
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bashio::log.warning "Skipping invalid env var name: ${key}"
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return 0
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fi
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value="$(resolve_secret_if_needed "$value")"
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if bashio::config.false "verbose" || [[ "${key,,}" =~ (pass|secret|token|apikey|api_key|private|pwd) ]]; then
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bashio::log.blue "${key}=******"
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else
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bashio::log.blue "${key}=${value}"
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fi
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export "${key}=${value}"
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# Export for s6 services (preferred way)
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if [[ -d /var/run/s6/container_environment ]]; then
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printf '%s' "${value}" > "/var/run/s6/container_environment/${key}"
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fi
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# Queue dotenv-style line for writing once (idempotent file update later)
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echo "${key}=$(dotenv_quote "$value")" >> "$ENV_KV_FILE" 2>/dev/null || true
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# Ensure scripts/services also see it (block injection)
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append_export_line_for_injection "$key" "$value"
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}
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# -----------------------------------------------------------------------------
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# One jq pass emits normalized key/value pairs:
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# - exports all scalar top-level options (strings/numbers/bools)
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# - skips objects/arrays (except env_vars)
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# - supports env_vars formats:
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# 1) [{name:"FOO", value:"bar"}, ...]
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# 2) [{FOO:"bar", BAZ:"qux"}, ...]
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# 3) ["FOO=bar", ...] (value may contain '=')
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# -----------------------------------------------------------------------------
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while IFS= read -r -d $'\0' key && IFS= read -r value; do
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export_option "$key" "$value"
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done < <(
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jq -r '
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def emit(k; v): "\((k|tostring))\u0000\((v|tostring))";
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# --- 1) env_vars[] ---
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( .env_vars? // [] )[] as $ev
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| if ($ev | type) == "object" then
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if ($ev | has("name") and has("value")) then
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emit($ev.name; ($ev.value // ""))
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else
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($ev | to_entries[] | emit(.key; (.value // "")))
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end
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else
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($ev | tostring) as $s
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| if ($s | test("^[^=]+=")) then
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($s | capture("^(?<k>[^=]+)=(?<v>.*)$")) as $m
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| emit($m.k; $m.v)
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else empty end
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end
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,
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# --- 2) top-level scalars excluding env_vars ---
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to_entries[]
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| select(.key != "env_vars")
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| select((.value|type) != "array" and (.value|type) != "object" and (.value|type) != "null")
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| emit(.key; .value)
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' "$JSONSOURCE"
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)
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# -----------------------------------------------------------------------------
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# Write /.env and /etc/environment in an idempotent way (no infinite appends)
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# -----------------------------------------------------------------------------
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# Ensure /.env has a header (only if missing)
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if [[ ! -f "$ENV_FILE" ]]; then
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printf '# Generated by 00-global_var.sh from %s\n' "$JSONSOURCE" > "$ENV_FILE"
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fi
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ENV_FILE_BLOCK="$(mktemp_safe)"
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trap 'rm -f "$EXPORT_BLOCK_FILE" "$ENV_KV_FILE" "$ENV_FILE_BLOCK"' EXIT
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EXPORT_BLOCK="$(mktemp_safe)"
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KV_FILE="$(mktemp_safe)"
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trap 'rm -f "$EXPORT_BLOCK" "$KV_FILE"' EXIT
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{
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echo "${FILE_BLOCK_BEGIN}"
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echo "# Do not edit: generated from ${JSONSOURCE}"
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cat "$ENV_KV_FILE" 2>/dev/null || true
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echo "${FILE_BLOCK_END}"
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} > "$ENV_FILE_BLOCK"
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echo "$BLOCK_BEGIN"
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echo "# Generated from $JSONSOURCE"
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echo "$BLOCK_END"
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} > "$EXPORT_BLOCK"
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replace_block_in_file "$ENV_FILE" "$FILE_BLOCK_BEGIN" "$FILE_BLOCK_END" "$ENV_FILE_BLOCK"
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replace_block_in_file "$ETC_ENV_FILE" "$FILE_BLOCK_BEGIN" "$FILE_BLOCK_END" "$ENV_FILE_BLOCK"
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append_export() {
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local k="$1" v="$2"
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local q
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q="$(shell_quote "$v")"
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awk -v k="$k" -v q="$q" -v e="$BLOCK_END" '$0==e{print "export "k"="q}1' "$EXPORT_BLOCK" > "$EXPORT_BLOCK.tmp"
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mv "$EXPORT_BLOCK.tmp" "$EXPORT_BLOCK"
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}
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# -----------------------------------------------------------------------------
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||||
# Inject generated export block into service scripts and interactive shells
|
||||
# -----------------------------------------------------------------------------
|
||||
update_scripts_with_block
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inject_block() {
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local f="$1" tmp
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tmp="$(mktemp_safe)"
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awk -v b="$BLOCK_BEGIN" -v e="$BLOCK_END" -v bf="$EXPORT_BLOCK" '
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function emit(){while((getline l<bf)>0)print l;close(bf)}
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||||
BEGIN{p=0}
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||||
{
|
||||
if($0==b){skip=1;emit();next}
|
||||
if($0==e){skip=0;next}
|
||||
if(skip)next
|
||||
if(NR==1 && $0~/^#!/){print;emit();next}
|
||||
print
|
||||
}
|
||||
END{if(!skip)emit()}
|
||||
' "$f" > "$tmp"
|
||||
cat "$tmp" > "$f"
|
||||
rm -f "$tmp"
|
||||
}
|
||||
|
||||
# System-wide interactive bash shells
|
||||
touch "/etc/bash.bashrc"
|
||||
inject_block_into_file "/etc/bash.bashrc"
|
||||
################################################################################
|
||||
# Export handler
|
||||
################################################################################
|
||||
export_var() {
|
||||
local k="$1" v="$2"
|
||||
|
||||
# Common per-user interactive bash shell config (more standard than bash.bashrc)
|
||||
if [[ -n "${HOME:-}" ]]; then
|
||||
mkdir -p "$HOME"
|
||||
touch "$HOME/.bashrc"
|
||||
inject_block_into_file "$HOME/.bashrc"
|
||||
[[ "$k" =~ ^[A-Za-z_][A-Za-z0-9_]*$ ]] || return
|
||||
|
||||
# Kept for compatibility with images that use this non-standard name
|
||||
touch "$HOME/bash.bashrc"
|
||||
inject_block_into_file "$HOME/bash.bashrc"
|
||||
fi
|
||||
v="$(resolve_secret "$v")"
|
||||
|
||||
# -----------------------------------------------------------------------------
|
||||
# Set timezone (kept identical in behavior)
|
||||
# -----------------------------------------------------------------------------
|
||||
set +eu
|
||||
|
||||
if [ -n "$TZ" ] && [ -f /etc/localtime ]; then
|
||||
if [ -f /usr/share/zoneinfo/"$TZ" ]; then
|
||||
echo "Timezone set from $(cat /etc/timezone) to $TZ"
|
||||
ln -snf /usr/share/zoneinfo/"$TZ" /etc/localtime && echo "$TZ" > /etc/timezone
|
||||
if [[ "${k,,}" =~ pass|token|secret|key ]]; then
|
||||
bashio::log.blue "$k=******"
|
||||
else
|
||||
bashio::log.blue "$k=$v"
|
||||
fi
|
||||
|
||||
export "$k=$v"
|
||||
|
||||
[[ -d /var/run/s6/container_environment ]] && printf '%s' "$v" > "/var/run/s6/container_environment/$k"
|
||||
|
||||
echo "$k=$(dotenv_quote "$v")" >> "$KV_FILE"
|
||||
append_export "$k" "$v"
|
||||
}
|
||||
|
||||
################################################################################
|
||||
# JSON parsing (safe + jq bug fixed)
|
||||
################################################################################
|
||||
while IFS= read -r -d $'\0' k && IFS= read -r v; do
|
||||
export_var "$k" "$v"
|
||||
done < <(
|
||||
jq -r '
|
||||
def emit(k;v): "\((k|tostring))\u0000\((v|tostring))";
|
||||
. as $root
|
||||
|
|
||||
(
|
||||
($root.env_vars?//[])[]? as $e
|
||||
| if $e|type=="object" then
|
||||
if $e|has("name") and has("value") then emit($e.name;$e.value)
|
||||
else $e|to_entries[]|emit(.key;.value) end
|
||||
else
|
||||
($e|tostring) as $s
|
||||
| if $s|test("=") then
|
||||
($s|capture("^(?<k>[^=]+)=(?<v>.*)$"))|emit(.k;.v)
|
||||
else empty end
|
||||
end
|
||||
),
|
||||
(
|
||||
$root|to_entries[]
|
||||
| select(.key!="env_vars")
|
||||
| select((.value|type)!="object" and (.value|type)!="array")
|
||||
| emit(.key;.value)
|
||||
)
|
||||
' "$JSONSOURCE"
|
||||
)
|
||||
|
||||
################################################################################
|
||||
# Write .env and /etc/environment (idempotent)
|
||||
################################################################################
|
||||
{
|
||||
echo "$BLOCK_BEGIN"
|
||||
cat "$KV_FILE"
|
||||
echo "$BLOCK_END"
|
||||
} > "$ENV_FILE.tmp"
|
||||
mv "$ENV_FILE.tmp" "$ENV_FILE"
|
||||
cp "$ENV_FILE" "$ETC_ENV_FILE"
|
||||
|
||||
################################################################################
|
||||
# Inject into scripts and shells
|
||||
################################################################################
|
||||
for f in /etc/services.d/*/run /etc/cont-init.d/*.sh /entrypoint.sh /etc/bash.bashrc "$HOME/.bashrc"; do
|
||||
[[ -f "$f" ]] && inject_block "$f"
|
||||
done
|
||||
|
||||
################################################################################
|
||||
# Timezone
|
||||
################################################################################
|
||||
set +e
|
||||
if [[ -n "$TZ" && -f "/usr/share/zoneinfo/$TZ" ]]; then
|
||||
ln -snf "/usr/share/zoneinfo/$TZ" /etc/localtime
|
||||
echo "$TZ" > /etc/timezone
|
||||
fi
|
||||
|
||||
Reference in New Issue
Block a user