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appstore/apps/leafwiki/0.12.1/scripts/init.sh
T

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Executable File

#!/usr/bin/env bash
set -euo pipefail
ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd -P)"
ENV_FILE="${ENV_FILE:-$ROOT_DIR/.env}"
read_env_value() {
local key="$1"
[[ -f "$ENV_FILE" ]] || return 0
local value
value="$(sed -n "s/^${key}=//p" "$ENV_FILE" | tail -n 1)"
case "$value" in
\"*\") value="${value#\"}"; value="${value%\"}" ;;
\'*\') value="${value#\'}"; value="${value%\'}" ;;
esac
printf '%s\n' "$value"
}
configured_value() {
local key="$1"
local default_value="$2"
local value="${!key:-}"
if [[ -z "$value" ]]; then
value="$(read_env_value "$key")"
fi
printf '%s\n' "${value:-$default_value}"
}
prepare_data_dir() {
local raw path secrets_file temp_file jwt_secret totp_key
raw="$(configured_value APP_DATA_DIR ./data)"
[[ -n "$raw" ]] || {
printf '%s\n' 'APP_DATA_DIR must not be empty' >&2
exit 1
}
if [[ "$raw" = /* ]]; then
printf '%s\n' 'APP_DATA_DIR must be relative to the application version directory' >&2
exit 1
fi
path="$(realpath -m -- "$ROOT_DIR/${raw#./}")"
case "$path" in
"$ROOT_DIR"/*) ;;
*)
printf '%s\n' 'APP_DATA_DIR must remain inside the application version directory' >&2
exit 1
;;
esac
install -d -m 0750 "$path"
path="$(realpath -e -- "$path")"
case "$path" in
"$ROOT_DIR"/*) ;;
*)
printf '%s\n' 'APP_DATA_DIR resolves outside the application version directory' >&2
exit 1
;;
esac
chmod 0750 "$path"
chown -R --no-dereference 1000:1000 "$path"
secrets_file="$path/.leafwiki-secrets.env"
if [[ -L "$secrets_file" ]]; then
printf '%s\n' 'LeafWiki secrets file must not be a symbolic link' >&2
exit 1
fi
if [[ ! -e "$secrets_file" ]]; then
umask 077
jwt_secret="$(od -An -N32 -tx1 /dev/urandom | tr -d ' \n')"
totp_key="$(od -An -N32 -tx1 /dev/urandom | tr -d ' \n')"
[[ ${#jwt_secret} -eq 64 && ${#totp_key} -eq 64 ]] || {
printf '%s\n' 'Failed to generate LeafWiki secrets' >&2
exit 1
}
temp_file="$(mktemp "$path/.leafwiki-secrets.env.tmp.XXXXXX")"
trap 'rm -f -- "${temp_file:-}"' EXIT
printf 'LEAFWIKI_JWT_SECRET=%s\nLEAFWIKI_TOTP_ENCRYPTION_KEY=%s\n' \
"$jwt_secret" "$totp_key" >"$temp_file"
chmod 0600 "$temp_file"
chown 1000:1000 "$temp_file"
mv -f -- "$temp_file" "$secrets_file"
trap - EXIT
fi
[[ -f "$secrets_file" ]] || {
printf '%s\n' 'LeafWiki secrets path must be a regular file' >&2
exit 1
}
[[ "$(grep -c '^LEAFWIKI_JWT_SECRET=' "$secrets_file")" -eq 1 ]] || {
printf '%s\n' 'LeafWiki secrets file must contain exactly one JWT secret' >&2
exit 1
}
[[ "$(grep -c '^LEAFWIKI_TOTP_ENCRYPTION_KEY=' "$secrets_file")" -eq 1 ]] || {
printf '%s\n' 'LeafWiki secrets file must contain exactly one TOTP encryption key' >&2
exit 1
}
jwt_secret="$(sed -n 's/^LEAFWIKI_JWT_SECRET=//p' "$secrets_file")"
totp_key="$(sed -n 's/^LEAFWIKI_TOTP_ENCRYPTION_KEY=//p' "$secrets_file")"
[[ "$jwt_secret" =~ ^[0-9a-f]{64}$ ]] || {
printf '%s\n' 'LeafWiki JWT secret must be a 256-bit hexadecimal value' >&2
exit 1
}
[[ "$totp_key" =~ ^[0-9a-f]{64}$ ]] || {
printf '%s\n' 'LeafWiki TOTP encryption key must be a 256-bit hexadecimal value' >&2
exit 1
}
[[ "$(stat -c '%a' -- "$secrets_file")" = 600 ]] || {
printf '%s\n' 'LeafWiki secrets file permissions must be 0600' >&2
exit 1
}
}
prepare_data_dir