refactor(klipper): implement blacklisted service names (#304)

scripts/klipper.sh

@@ -19,8 +19,30 @@ set -e
 #================ INSTALL KLIPPER ================#
 #=================================================#
 
+###
+# this function detects all installed klipper
+# systemd instances and returns their absolute path
+function klipper_systemd() {
+  local services
+  local blacklist
+  local ignore
+  local match
+
+  ###
+  # any service that uses "klipper" in its own name but isn't a full klipper service must be blacklisted using
+  # this variable, otherwise they will be falsely recognized as klipper instances. E.g. "klipper-mcu.service"
+  # is not a klipper service, but related to klippers linux mcu, which also requires its own service file, hence
+  # it must be blacklisted.
+  blacklist="mcu"
+
+  ignore="${SYSTEMD}/klipper-(${blacklist}).service"
+  match="${SYSTEMD}/klipper(-[0-9a-zA-Z]+)?.service"
+
+  services=$(find "${SYSTEMD}" -maxdepth 1 -regextype awk ! -regex "${ignore}" -regex "${match}" | sort)
+  echo "${services}"
+}
+
 function start_klipper_setup() {
-  local klipper_initd_service
   local klipper_systemd_services
   local python_version
   local instance_count
@@ -28,20 +50,15 @@ function start_klipper_setup() {
   local use_custom_names
   local input
   local regex
+  local blacklist
   local error
 
   status_msg "Initializing Klipper installation ...\n"
 
   ### return early if klipper already exists
-  klipper_initd_service=$(find_klipper_initd)
-  klipper_systemd_services=$(find_klipper_systemd)
+  klipper_systemd_services=$(klipper_systemd)
 
-  if [[ -n ${klipper_initd_service} ]]; then
-    error="Unsupported Klipper SysVinit service detected:"
-    error="${error}\n ➔ ${klipper_initd_service}"
-    error="${error}\n Please re-install Klipper with KIAUH!"
-    log_info "Unsupported Klipper SysVinit service detected: ${klipper_initd_service}"
-  elif [[ -n ${klipper_systemd_services} ]]; then
+  if [[ -n ${klipper_systemd_services} ]]; then
     error="At least one Klipper service is already installed:"
 
     for s in ${klipper_systemd_services}; do
@@ -113,15 +130,19 @@ function start_klipper_setup() {
   fi
 
   ### user selection for setting the actual custom names
+  shopt -s nocasematch
   if (( instance_count > 1 )) && [[ ${use_custom_names} == "true" ]]; then
     local i
 
     i=1
     regex="^[0-9a-zA-Z]+$"
-    while [[ ! ${input} =~ ${regex} || ${i} -le ${instance_count} ]]; do
+    blacklist="mcu"
+    while [[ ! ${input} =~ ${regex} || ${input} =~ ${blacklist} || ${i} -le ${instance_count} ]]; do
       read -p "${cyan}###### Name for instance #${i}:${white} " input
 
-      if [[ ${input} =~ ${regex} ]]; then
+      if [[ ${input} =~ ${blacklist} ]]; then
+        error_msg "Name not allowed! You are trying to use a reserved name."
+      elif [[ ${input} =~ ${regex} && ! ${input} =~ ${blacklist} ]]; then
         select_msg "Name: ${input}\n"
         if [[ ${input} =~ ^[0-9]+$ ]]; then
           instance_names+=("printer_${input}")
@@ -138,6 +159,7 @@ function start_klipper_setup() {
       instance_names+=("printer_${i}")
     done
   fi
+  shopt -u nocasematch
 
   (( instance_count > 1 )) && status_msg "Installing ${instance_count} Klipper instances ..."
   (( instance_count == 1 )) && status_msg "Installing single Klipper instance ..."
@@ -386,26 +408,18 @@ function write_example_printer_cfg() {
 #================================================#
 
 function remove_klipper_service() {
-  if [[ ! -e "${INITD}/klipper" ]] && [[ -z $(find_klipper_systemd) ]]; then
-    return
-  fi
+  [[ -z $(klipper_systemd) ]] && return
 
   status_msg "Removing Klipper services ..."
 
-  if [[ -e "${INITD}/klipper" ]]; then
-    sudo systemctl stop klipper
-    sudo update-rc.d -f klipper remove
-    sudo rm -f "${INITD}/klipper" "${ETCDEF}/klipper"
-  else
-    for service in $(find_klipper_systemd | cut -d"/" -f5); do
-      status_msg "Removing ${service} ..."
-      sudo systemctl stop "${service}"
-      sudo systemctl disable "${service}"
-      sudo rm -f "${SYSTEMD}/${service}"
-      sudo systemctl daemon-reload
-      sudo systemctl reset-failed
-    done
-  fi
+  for service in $(klipper_systemd | cut -d"/" -f5); do
+    status_msg "Removing ${service} ..."
+    sudo systemctl stop "${service}"
+    sudo systemctl disable "${service}"
+    sudo rm -f "${SYSTEMD}/${service}"
+    sudo systemctl daemon-reload
+    sudo systemctl reset-failed
+  done
 
   ok_msg "All Klipper services removed!"
 }
@@ -534,13 +548,7 @@ function update_klipper() {
 
 function get_klipper_status() {
   local sf_count status py_ver
-  sf_count="$(find_klipper_systemd | wc -w)"
-
-  ### detect an existing "legacy" klipper init.d installation
-  if [[ $(find_klipper_systemd | wc -w) -eq 0 ]] \
-  && [[ $(find_klipper_initd | wc -w) -ge 1 ]]; then
-    sf_count=1
-  fi
+  sf_count="$(klipper_systemd | wc -w)"
 
   py_ver=$(get_klipper_python_ver)
 

scripts/moonraker.sh

@@ -60,7 +60,7 @@ function moonraker_setup_dialog() {
 
   ### return early if klipper is not installed
   local klipper_services
-  klipper_services=$(find_klipper_systemd)
+  klipper_services=$(klipper_systemd)
   if [[ -z ${klipper_services} ]]; then
     local error="Klipper not installed! Please install Klipper first!"
     log_error "Moonraker setup started without Klipper being installed. Aborting setup."

scripts/octoprint.sh

@@ -25,7 +25,7 @@ function octoprint_setup_dialog() {
   status_msg "Initializing OctoPrint installation ..."
 
   local klipper_services
-  klipper_services=$(find_klipper_systemd)
+  klipper_services=$(klipper_systemd)
   if [[ -z ${klipper_services} ]]; then
     local error="Klipper not installed! Please install Klipper first!"
     log_error "OctoPrint setup started without Klipper being installed. Aborting setup."

scripts/utilities.sh

@@ -338,18 +338,6 @@ function fetch_webui_ports() {
 #=================== SYSTEM =====================#
 #================================================#
 
-function find_klipper_initd() {
-  local services
-  services=$(find "${INITD}" -maxdepth 1 -regextype posix-extended -regex "${INITD}/klipper(-[^0])?[0-9]*" | sort)
-  echo "${services}"
-}
-
-function find_klipper_systemd() {
-  local services
-  services=$(find "${SYSTEMD}" -maxdepth 1 -regextype posix-extended -regex "${SYSTEMD}/klipper(-[0-9a-zA-Z]+)?.service" | sort)
-  echo "${services}"
-}
-
 function create_required_folders() {
   local printer_data=${1} folders
   folders=("backup" "certs" "config" "database" "gcodes" "comms" "logs" "systemd")
@@ -599,7 +587,7 @@ function set_multi_instance_names() {
   local names=""
   local services
 
-  services=$(find_klipper_systemd)
+  services=$(klipper_systemd)
 
   ###
   # if value of 'multi_instance_names' is not an empty
@@ -664,7 +652,7 @@ function get_config_folders() {
         cfg_dirs+=("${HOME}/${name}_data/config")
       fi
     done
-  elif [[ -z ${instance_names} && $(find_klipper_systemd | wc -w) -gt 0 ]]; then
+  elif [[ -z ${instance_names} && $(klipper_systemd | wc -w) -gt 0 ]]; then
     cfg_dirs+=("${HOME}/printer_data/config")
   else
     cfg_dirs=()
@@ -707,7 +695,7 @@ function get_instance_folder_path() {
         fi
       fi
     done
-  elif [[ -z ${instance_names} && $(find_klipper_systemd | wc -w) -gt 0 ]]; then
+  elif [[ -z ${instance_names} && $(klipper_systemd | wc -w) -gt 0 ]]; then
     path="${HOME}/printer_data/${folder_name}"
     if [[ -d ${path} ]]; then
       folder_paths+=("${path}")