Archive discontinued selective SRS implementation
This commit is contained in:
@@ -1,685 +0,0 @@
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#!/usr/bin/env bash
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# ----------
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# Common functions and settings for selective SRS management scripts
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#
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# This file is intended to be sourced by:
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#
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# activate-srs.sh
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# deactivate-srs.sh
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# install-update-srs.sh
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#
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# It must not make configuration changes by itself.
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# ----------
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# ----------
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# Script paths
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# ----------
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SRS_COMMON_FILE="$(realpath "${BASH_SOURCE[0]}")"
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SRS_HELPERS_DIR="$(dirname "$SRS_COMMON_FILE")"
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SRS_SCRIPT_DIR="$(dirname "$SRS_HELPERS_DIR")"
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SRS_CONF_FILE="${SRS_SCRIPT_DIR}/conf/srs.conf"
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SRS_CONF_SAMPLE_FILE="${SRS_SCRIPT_DIR}/conf/srs.conf.sample"
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# ----------
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# System paths
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# ----------
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POSTFIX_CONF_DIR="/etc/postfix"
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POSTFIX_MAIN_CF="${POSTFIX_CONF_DIR}/main.cf"
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POSTFIX_MASTER_CF="${POSTFIX_CONF_DIR}/master.cf"
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POSTFIX_SRS_DIR="/etc/postfix-srs"
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POSTFIX_SRS_DELIVERY_DIR="${POSTFIX_SRS_DIR}/delivery"
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SRS_STATE_FILE="${POSTFIX_SRS_DIR}/state.conf"
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# SRS bounce alias ownership is tracked by a comment marker in main.cf;
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# original version-1 state.conf is immutable and needs no unsafe migration.
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SRS_ALIAS_HELPER="${SRS_HELPERS_DIR}/srs-virtual-alias.py"
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POSTSRSD_CONF_DIR="/etc/postsrsd-srs"
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POSTSRSD_CONF_FILE="${POSTSRSD_CONF_DIR}/postsrsd.conf"
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POSTSRSD_SECRET_FILE="${POSTSRSD_CONF_DIR}/secret"
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SRS_ALIAS_DECISION_SCRIPT="/usr/local/sbin/srs-alias-decision.py"
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SRS_FORWARD_SCRIPT="/usr/local/sbin/srs-forward.py"
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SRS_REVERSE_MAP_SCRIPT="/usr/local/sbin/srs-reverse-map.py"
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SRS_REVERSE_POLICY_SCRIPT="/usr/local/sbin/srs-reverse-policy.py"
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# ----------
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# Services
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# ----------
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POSTFIX_SERVICE="postfix.service"
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POSTSRSD_SERVICE="postsrsd-srs.service"
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SRS_REVERSE_MAP_SERVICE="srs-reverse-map.service"
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SRS_DELIVERY_SERVICE="postfix@srs-delivery.service"
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POSTFIX_SRS_DROPIN_DIR="/etc/systemd/system/postfix.service.d"
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POSTFIX_SRS_DROPIN_FILE="${POSTFIX_SRS_DROPIN_DIR}/srs.conf"
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SRS_DELIVERY_DROPIN_DIR="/etc/systemd/system/postfix@srs-delivery.service.d"
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SRS_DELIVERY_DROPIN_FILE="${SRS_DELIVERY_DROPIN_DIR}/srs.conf"
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# ----------
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# SRS network endpoints
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# ----------
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POSTSRSD_SOCKET_HOST="127.0.0.1"
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POSTSRSD_SOCKET_PORT="10003"
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SRS_REVERSE_SOCKET_HOST="127.0.0.1"
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SRS_REVERSE_SOCKET_PORT="10004"
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SRS_REINJECT_HOST="127.0.0.1"
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SRS_REINJECT_PORT="10028"
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SRS_REVERSE_HOST="127.0.0.1"
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SRS_REVERSE_PORT="10029"
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# ----------
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# Managed block markers
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# ----------
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SRS_MAIN_CF_BEGIN_MARKER="# BEGIN OOPEN-SRS-MANAGED"
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SRS_MAIN_CF_END_MARKER="# END OOPEN-SRS-MANAGED"
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SRS_MASTER_CF_BEGIN_MARKER="# BEGIN OOPEN-SRS-MANAGED"
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SRS_MASTER_CF_END_MARKER="# END OOPEN-SRS-MANAGED"
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# ----------
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# Runtime variables
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# ----------
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script_name="$(basename "$0")"
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terminal=false
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SRS_LOCK_DIR="/run/lock/oopen-srs.lock"
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SRS_LOCK_OWNER_FILE="${SRS_LOCK_DIR}/pid"
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log_file=""
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backup_date="$(date +%Y-%m-%d-%H%M%S)"
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SRS_LOCK_ACQUIRED=false
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SRS_CONFIG_LOADED=false
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SRS_STATE_LOADED=false
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# ----------
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# Base functions
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# ----------
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blank_line() {
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if $terminal ; then
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echo ""
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fi
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}
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echononl() {
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if $terminal ; then
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echo -e -n " $*" 1>&2
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fi
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}
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echo_ok() {
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if $terminal ; then
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echo -e "\033[85G[ \033[32mok\033[m ]"
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fi
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}
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echo_failed() {
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if $terminal ; then
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echo -e "\033[85G[ \033[1;31mfailed\033[m ]"
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fi
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}
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echo_skipped() {
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if $terminal ; then
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echo -e "\033[85G[ \033[33m\033[1mskipped\033[m ]"
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fi
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}
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echo_warning() {
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if $terminal ; then
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echo -e "\033[85G[ \033[33m\033[1mwarn\033[m ]"
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fi
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}
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echo_differs() {
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if $terminal ; then
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echo -e "\033[85G[ \033[33m\033[1mdiffers\033[m ]"
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fi
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}
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echo_inactive() {
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if $terminal ; then
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echo -e "\033[85G[ \033[33m\033[1minactive\033[m ]"
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fi
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}
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echo_absent() {
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if $terminal ; then
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echo -e "\033[85G[ \033[33m\033[1mabsent\033[m ]"
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fi
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}
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info() {
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if $terminal ; then
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echo ""
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echo -e " [ \033[32m\033[1mInfo\033[m ] $*"
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echo ""
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else
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echo " [ Info ] $*"
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fi
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}
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warn() {
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echo ""
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if $terminal ; then
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echo -e " [ \033[33m\033[1mWarning\033[m ] $*"
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else
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echo " [ Warning ] $*"
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fi
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echo ""
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}
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error() {
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echo ""
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if $terminal ; then
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echo -e " [ \033[31m\033[1mError\033[m ] $*"
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else
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echo " [ Error ] $*"
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fi
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echo ""
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}
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clean_up() {
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local rc="${1:-0}"
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if $SRS_LOCK_ACQUIRED && [[ -d "$SRS_LOCK_DIR" ]]; then
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rm -rf "$SRS_LOCK_DIR"
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SRS_LOCK_ACQUIRED=false
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fi
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[[ -n "$log_file" && -f "$log_file" ]] && rm -f "$log_file"
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blank_line
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exit "$rc"
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}
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fatal() {
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echo ""
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if $terminal ; then
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echo -e " [ \033[31m\033[1mFatal\033[m ] $*"
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echo ""
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echo -e " \033[1mScript terminated\033[m.."
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else
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echo " [ Fatal ] $*"
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echo ""
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echo " Script terminated.."
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fi
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echo ""
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clean_up 1
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}
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fatal_with_command_hint() {
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local message="$1"
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local hint="$2"
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local command="$3"
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echo ""
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if $terminal ; then
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echo -e " [ \033[31m\033[1mFatal\033[m ] ${message}"
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echo ""
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echo -e " \033[1mScript terminated\033[m.."
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else
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echo " [ Fatal ] ${message}"
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echo ""
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echo " Script terminated.."
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fi
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echo ""
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if $terminal ; then
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echo -e " [ \033[33m\033[1mWarning\033[m ] ${hint}"
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else
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echo " [ Warning ] ${hint}"
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fi
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echo ""
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echo " ${command}"
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echo ""
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clean_up 1
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}
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fatal_with_queue_help() {
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local message="$1"
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local queue_config_dir="$2"
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echo ""
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if $terminal ; then
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echo -e " [ \033[31m\033[1mFatal\033[m ] ${message}"
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echo ""
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echo -e " \033[1mScript terminated\033[m.."
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else
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echo " [ Fatal ] ${message}"
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echo ""
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echo " Script terminated.."
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fi
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echo ""
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if $terminal ; then
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echo -e " [ \033[33m\033[1mWarning\033[m ] To inspect the SRS delivery queue, run:"
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else
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echo " [ Warning ] To inspect the SRS delivery queue, run:"
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fi
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echo ""
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echo " postqueue -c ${queue_config_dir} -p"
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echo ""
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if $terminal ; then
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echo -e " [ \033[33m\033[1mWarning\033[m ] To inspect one queued message, replace QUEUE_ID and run:"
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else
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echo " [ Warning ] To inspect one queued message, replace QUEUE_ID and run:"
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fi
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echo ""
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echo " postcat -c ${queue_config_dir} -q QUEUE_ID"
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echo ""
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if $terminal ; then
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echo -e " [ \033[33m\033[1mWarning\033[m ] If you really want to delete ALL messages from the SRS delivery queue, run:"
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else
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echo " [ Warning ] If you really want to delete ALL messages from the SRS delivery queue, run:"
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fi
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echo ""
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echo " postsuper -c ${queue_config_dir} -d ALL"
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echo ""
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clean_up 1
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}
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ask_yes_no() {
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local question="$1"
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local default_answer="${2:-no}"
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local answer=""
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local prompt="[yes/no]"
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if [[ "$default_answer" = "yes" ]]; then
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prompt="[yes/no, default: yes]"
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elif [[ "$default_answer" = "no" ]]; then
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prompt="[yes/no, default: no]"
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fi
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while true ; do
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echononl "$question $prompt: "
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read -r answer
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answer="${answer,,}"
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[[ -z "$answer" ]] && answer="$default_answer"
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case "$answer" in
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yes) return 0 ;;
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no) return 1 ;;
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*) warn "Wrong entry! Please enter 'yes' or 'no'." ;;
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esac
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done
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}
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# ----------
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# Runtime handling
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# ----------
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init_srs_runtime() {
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local script_path=""
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local transcript_file=""
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if [[ -t 1 ]]; then
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terminal=true
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else
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script_path="$(realpath "$0" 2>/dev/null || printf '%s' "$0")"
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transcript_file="/tmp/${script_name%.sh}.out"
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echo ""
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echo " [ Fatal ] Script requires an interactive terminal."
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echo ""
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echo " Script terminated.."
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echo ""
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echo " [ Warning ] Piping the script output, for example through 'tee',"
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echo " removes the terminal from stdout."
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echo ""
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echo " To run the script interactively and record its complete"
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echo " terminal session, use:"
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echo ""
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echo " script -q -e -c \"${script_path}\" \\"
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echo " ${transcript_file}"
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echo ""
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clean_up 1
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fi
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if ! mkdir "$SRS_LOCK_DIR" 2>/dev/null ; then
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if [[ -r "$SRS_LOCK_OWNER_FILE" ]]; then
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fatal "Another SRS management process seems to be running (PID $(cat "$SRS_LOCK_OWNER_FILE"))."
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else
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fatal "Cannot create SRS lock directory '${SRS_LOCK_DIR}'."
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fi
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fi
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SRS_LOCK_ACQUIRED=true
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printf '%s\n' "$$" > "$SRS_LOCK_OWNER_FILE" || fatal "Cannot write SRS lock owner file '${SRS_LOCK_OWNER_FILE}'."
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log_file="${SRS_LOCK_DIR}/${script_name%%.*}.log"
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: > "$log_file" || fatal "Cannot create log file '${log_file}'."
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}
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handle_signal() {
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trap - SIGHUP SIGINT SIGTERM
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warn "Script interrupted by signal."
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clean_up 1
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}
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# ----------
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# Basic checks
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# ----------
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check_root() {
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echononl "Check if script is running as root.."
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if [[ "$(id -u)" -eq 0 ]]; then
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echo_ok
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else
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echo_failed
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fatal "This script must be run as root."
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fi
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}
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check_required_commands() {
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local cmd
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for cmd in "$@" ; do
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echononl "Check for command '${cmd}'.."
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if command -v "$cmd" > /dev/null 2>&1 ; then
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echo_ok
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else
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echo_failed
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fatal "Required command '${cmd}' was not found."
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fi
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done
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}
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check_readable_file() {
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local file="$1"
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local description="${2:-file}"
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echononl "Check ${description} '${file}'.."
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if [[ -r "$file" ]]; then
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echo_ok
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else
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echo_failed
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fatal "${description^} '${file}' does not exist or is not readable."
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fi
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}
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check_service_exists() {
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local service="$1"
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echononl "Check systemd service '${service}'.."
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if systemctl cat "$service" > /dev/null 2>&1 ; then
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echo_ok
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else
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echo_failed
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fatal "Systemd service '${service}' was not found."
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fi
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}
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check_service_active() {
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local service="$1"
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||||
echononl "Check systemd service '${service}' is active.."
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||||
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||||
if systemctl is-active --quiet "$service" ; then
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echo_ok
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||||
else
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||||
echo_failed
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||||
fatal "Systemd service '${service}' is not active."
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||||
fi
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||||
}
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||||
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# ----------
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||||
# Security checks for sourced files
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||||
# ----------
|
||||
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||||
check_secure_source_file() {
|
||||
local file="$1"
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||||
local description="${2:-configuration file}"
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||||
local owner_uid
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||||
local owner_gid
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||||
local mode
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||||
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echononl "Check security of ${description} '${file}'.."
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||||
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||||
if [[ ! -f "$file" || ! -r "$file" ]]; then
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echo_failed
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||||
fatal "${description^} '${file}' does not exist or is not readable."
|
||||
fi
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||||
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owner_uid="$(stat -c '%u' "$file" 2>/dev/null)" || {
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||||
echo_failed
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||||
fatal "Cannot determine owner of '${file}'."
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||||
}
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||||
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||||
owner_gid="$(stat -c '%g' "$file" 2>/dev/null)" || {
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||||
echo_failed
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||||
fatal "Cannot determine group of '${file}'."
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||||
}
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||||
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||||
mode="$(stat -c '%a' "$file" 2>/dev/null)" || {
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||||
echo_failed
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||||
fatal "Cannot determine permissions of '${file}'."
|
||||
}
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||||
|
||||
if [[ "$owner_uid" -ne 0 || "$owner_gid" -ne 0 ]]; then
|
||||
echo_failed
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||||
fatal "${description^} '${file}' must be owned by root:root."
|
||||
fi
|
||||
|
||||
if (( (8#$mode & 0022) != 0 )); then
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||||
echo_failed
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||||
fatal "${description^} '${file}' must not be writable by group or others."
|
||||
fi
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||||
|
||||
echo_ok
|
||||
}
|
||||
|
||||
|
||||
check_state_file_permissions() {
|
||||
local mode
|
||||
|
||||
echononl "Check permissions of persistent SRS state '${SRS_STATE_FILE}'.."
|
||||
|
||||
if [[ ! -f "$SRS_STATE_FILE" ]]; then
|
||||
echo_failed
|
||||
fatal "Persistent SRS state '${SRS_STATE_FILE}' does not exist."
|
||||
fi
|
||||
|
||||
if [[ "$(stat -c '%U:%G' "$SRS_STATE_FILE" 2>/dev/null)" != "root:root" ]]; then
|
||||
echo_failed
|
||||
fatal "Persistent SRS state '${SRS_STATE_FILE}' must be owned by root:root."
|
||||
fi
|
||||
|
||||
mode="$(stat -c '%a' "$SRS_STATE_FILE" 2>/dev/null)" || {
|
||||
echo_failed
|
||||
fatal "Cannot determine permissions of '${SRS_STATE_FILE}'."
|
||||
}
|
||||
|
||||
if [[ "$mode" != "600" ]]; then
|
||||
echo_failed
|
||||
fatal "Persistent SRS state '${SRS_STATE_FILE}' must have mode 0600 (current: ${mode})."
|
||||
fi
|
||||
|
||||
echo_ok
|
||||
}
|
||||
|
||||
|
||||
# ----------
|
||||
# SRS configuration
|
||||
# ----------
|
||||
|
||||
load_srs_config() {
|
||||
|
||||
if [[ ! -r "$SRS_CONF_FILE" ]]; then
|
||||
fatal "SRS configuration '${SRS_CONF_FILE}' does not exist or is not readable. Use '${SRS_CONF_SAMPLE_FILE}' as template."
|
||||
fi
|
||||
|
||||
check_secure_source_file "$SRS_CONF_FILE" "SRS configuration"
|
||||
|
||||
echononl "Read SRS configuration '${SRS_CONF_FILE}'.."
|
||||
|
||||
unset _SRS_DOMAIN
|
||||
|
||||
# shellcheck source=/dev/null
|
||||
source "$SRS_CONF_FILE"
|
||||
|
||||
if [[ -z "${_SRS_DOMAIN:-}" ]]; then
|
||||
echo_failed
|
||||
fatal "Variable '_SRS_DOMAIN' is not set in '${SRS_CONF_FILE}'."
|
||||
fi
|
||||
|
||||
if [[ "$_SRS_DOMAIN" =~ [[:space:]] ]]; then
|
||||
echo_failed
|
||||
fatal "Invalid SRS domain '${_SRS_DOMAIN}': whitespace is not allowed."
|
||||
fi
|
||||
|
||||
if [[ ! "$_SRS_DOMAIN" =~ ^([A-Za-z0-9]([A-Za-z0-9-]{0,61}[A-Za-z0-9])?\.)+[A-Za-z]{2,63}$ ]]; then
|
||||
echo_failed
|
||||
fatal "Invalid SRS domain '${_SRS_DOMAIN}'."
|
||||
fi
|
||||
|
||||
SRS_CONFIG_LOADED=true
|
||||
echo_ok
|
||||
}
|
||||
|
||||
# ----------
|
||||
# Persistent pre-SRS state
|
||||
# ----------
|
||||
|
||||
_is_boolean_value() {
|
||||
[[ "$1" = "true" || "$1" = "false" ]]
|
||||
}
|
||||
|
||||
load_srs_state() {
|
||||
|
||||
if [[ ! -r "$SRS_STATE_FILE" ]]; then
|
||||
fatal "Persistent SRS state '${SRS_STATE_FILE}' does not exist or is not readable."
|
||||
fi
|
||||
|
||||
check_state_file_permissions
|
||||
check_secure_source_file "$SRS_STATE_FILE" "persistent SRS state"
|
||||
|
||||
echononl "Read persistent SRS state '${SRS_STATE_FILE}'.."
|
||||
|
||||
unset _STATE_VERSION
|
||||
unset _STATE_ORIGIN
|
||||
unset _STATE_HOSTNAME
|
||||
|
||||
unset _PRE_SRS_DEFAULT_TRANSPORT_SET
|
||||
unset _PRE_SRS_DEFAULT_TRANSPORT
|
||||
unset _PRE_SRS_RECIPIENT_CANONICAL_MAPS_SET
|
||||
unset _PRE_SRS_RECIPIENT_CANONICAL_MAPS
|
||||
unset _PRE_SRS_SRS_FORWARD_DESTINATION_RECIPIENT_LIMIT_SET
|
||||
unset _PRE_SRS_SRS_FORWARD_DESTINATION_RECIPIENT_LIMIT
|
||||
unset _PRE_SRS_SMTP_RECEIVE_OVERRIDE_OPTIONS_SET
|
||||
unset _PRE_SRS_SMTP_RECEIVE_OVERRIDE_OPTIONS
|
||||
unset _PRE_SRS_AMAVIS_RECEIVE_OVERRIDE_OPTIONS_SET
|
||||
unset _PRE_SRS_AMAVIS_RECEIVE_OVERRIDE_OPTIONS
|
||||
|
||||
# shellcheck source=/dev/null
|
||||
source "$SRS_STATE_FILE"
|
||||
|
||||
if [[ "${_STATE_VERSION:-}" != "1" ]]; then
|
||||
echo_failed
|
||||
fatal "Unsupported or missing SRS state version in '${SRS_STATE_FILE}'."
|
||||
fi
|
||||
|
||||
local bool_var
|
||||
|
||||
for bool_var in _PRE_SRS_DEFAULT_TRANSPORT_SET _PRE_SRS_RECIPIENT_CANONICAL_MAPS_SET _PRE_SRS_SRS_FORWARD_DESTINATION_RECIPIENT_LIMIT_SET _PRE_SRS_SMTP_RECEIVE_OVERRIDE_OPTIONS_SET _PRE_SRS_AMAVIS_RECEIVE_OVERRIDE_OPTIONS_SET
|
||||
do
|
||||
if ! _is_boolean_value "${!bool_var:-}" ; then
|
||||
echo_failed
|
||||
fatal "Invalid boolean value for '${bool_var}' in '${SRS_STATE_FILE}'."
|
||||
fi
|
||||
done
|
||||
|
||||
if [[ -n "${_STATE_HOSTNAME:-}" && "${_STATE_HOSTNAME}" != "$(hostname -f)" ]]; then
|
||||
echo_warning
|
||||
warn "SRS state was created for host '${_STATE_HOSTNAME}', current hostname is '$(hostname -f)'."
|
||||
else
|
||||
echo_ok
|
||||
fi
|
||||
|
||||
SRS_STATE_LOADED=true
|
||||
}
|
||||
|
||||
# ----------
|
||||
# Managed block helpers
|
||||
# ----------
|
||||
|
||||
count_exact_line() {
|
||||
local file="$1"
|
||||
local line="$2"
|
||||
|
||||
grep -Fxc "$line" "$file" 2>/dev/null || true
|
||||
}
|
||||
|
||||
check_managed_block_markers() {
|
||||
local file="$1"
|
||||
local begin_marker="$2"
|
||||
local end_marker="$3"
|
||||
local begin_count
|
||||
local end_count
|
||||
local begin_line
|
||||
local end_line
|
||||
|
||||
begin_count="$(count_exact_line "$file" "$begin_marker")"
|
||||
end_count="$(count_exact_line "$file" "$end_marker")"
|
||||
|
||||
if [[ "$begin_count" -eq 0 && "$end_count" -eq 0 ]]; then
|
||||
return 1
|
||||
fi
|
||||
|
||||
if [[ "$begin_count" -ne 1 || "$end_count" -ne 1 ]]; then
|
||||
return 2
|
||||
fi
|
||||
|
||||
begin_line="$(grep -Fnx "$begin_marker" "$file" | cut -d: -f1)"
|
||||
end_line="$(grep -Fnx "$end_marker" "$file" | cut -d: -f1)"
|
||||
|
||||
if [[ -z "$begin_line" || -z "$end_line" ]]; then
|
||||
return 2
|
||||
fi
|
||||
|
||||
if (( begin_line >= end_line )); then
|
||||
return 2
|
||||
fi
|
||||
|
||||
return 0
|
||||
}
|
||||
Reference in New Issue
Block a user