refactor: multiple

Signed-off-by: Dominik Willner th33xitus@gmail.com

scripts/utilities.sh

@@ -565,9 +565,28 @@ function fetch_webui_ports(){
 }
 
 #================================================#
-#================= USERGROUPS ===================#
+#=================== SYSTEM =====================#
 #================================================#
 
+function check_system_updates(){
+  SYS_UPDATE=$(apt list --upgradeable 2>/dev/null | sed "1d")
+  if [ ! -z "$SYS_UPDATE" ]; then
+    # add system updates to the update all array for the update all function in the updater
+    SYS_UPDATE_AVAIL="true" && update_arr+=(update_system)
+    DISPLAY_SYS_UPDATE="${yellow}System upgrade available!${white}"
+  else
+    SYS_UPDATE_AVAIL="false"
+    DISPLAY_SYS_UPDATE="${green}System up to date!       ${white}"
+  fi
+}
+
+function update_system(){
+  status_msg "Updating System ..."
+  sudo apt-get update --allow-releaseinfo-change && sudo apt-get upgrade -y
+  CONFIRM_MSG="Update complete! Check the log above!\n ${yellow}KIAUH will not install any dist-upgrades or\n any packages which have been kept back!${green}"
+  print_msg && clear_msg
+}
+
 function check_usergroups(){
   local group_dialout group_tty
   if grep -q "dialout" </etc/group && ! grep -q "dialout" <(groups "${USER}"); then
@@ -613,4 +632,97 @@ function check_usergroups(){
       esac
     done
   fi
+}
+
+function create_custom_hostname(){
+  echo
+  top_border
+  echo -e "|  You can change the hostname of this machine to use   |"
+  echo -e "|  that name to open the Interface in your browser.     |"
+  echo -e "|                                                       |"
+  echo -e "|  E.g.: If you set the hostname to 'my-printer' you    |"
+  echo -e "|        can open Mainsail / Fluidd / Octoprint by      |"
+  echo -e "|        browsing to: http://my-printer.local           |"
+  bottom_border
+  while true; do
+    read -p "${cyan}###### Do you want to change the hostname? (y/N):${white} " yn
+    case "${yn}" in
+      Y|y|Yes|yes)
+        user_input_hostname
+        break;;
+      N|n|No|no|"") break;;
+      *)
+        print_unkown_cmd
+        print_msg && clear_msg;;
+    esac
+  done
+}
+
+function user_input_hostname(){
+    unset NEW_HOSTNAME
+    unset HOSTNAME_VALID
+    unset HOSTENAME_CONFIRM
+    echo
+    top_border
+    echo -e "|  ${green}Allowed characters: a-z, 0-9 and single '-'${white}          |"
+    echo -e "|  ${red}No special characters allowed!${white}                       |"
+    echo -e "|  ${red}No leading or trailing '-' allowed!${white}                  |"
+    bottom_border
+    while true; do
+      read -p "${cyan}###### Please set the new hostname:${white} " NEW_HOSTNAME
+      if [[ ${NEW_HOSTNAME} =~ ^[^\-\_]+([0-9a-z]\-{0,1})+[^\-\_]+$ ]]; then
+        ok_msg "'${NEW_HOSTNAME}' is a valid hostname!"
+        HOSTNAME_VALID="true"
+        while true; do
+          echo
+          read -p "${cyan}###### Do you want '${NEW_HOSTNAME}' to be the new hostname? (Y/n):${white} " yn
+          case "${yn}" in
+            Y|y|Yes|yes|"")
+              echo -e "###### > Yes"
+              HOSTENAME_CONFIRM="true"
+              break;;
+            N|n|No|no)
+              echo -e "###### > No"
+              echo -e "${red}Skip hostname change ...${white}"
+              HOSTENAME_CONFIRM="false"
+              break;;
+            *)
+              print_error "Invalid command!";;
+          esac
+        done
+      break
+      else
+        warn_msg "'${NEW_HOSTNAME}' is not a valid hostname!"
+      fi
+    done
+}
+
+function set_hostname(){
+  if [ "${HOSTNAME_VALID}" = "true" ] && [ "${HOSTENAME_CONFIRM}" = "true" ]; then
+    #check for dependencies
+    dep=(avahi-daemon)
+    dependency_check "${dep[@]}"
+    #execute operations
+    #get current hostname and write to variable
+    HOSTNAME=$(hostname)
+    #create host file if missing or create backup of existing one with current date&time
+    if [ -f /etc/hosts ]; then
+      status_msg "Creating backup of hosts file ..."
+      get_date
+      sudo cp "/etc/hosts /etc/hosts.${current_date}.bak"
+      ok_msg "Backup done!"
+      ok_msg "File:'/etc/hosts.${current_date}.bak'"
+    else
+      sudo touch /etc/hosts
+    fi
+    #set hostname in /etc/hostname
+    status_msg "Setting hostname to '${NEW_HOSTNAME}' ..."
+    status_msg "Please wait ..."
+    sudo hostnamectl set-hostname "${NEW_HOSTNAME}"
+    #write new hostname to /etc/hosts
+    status_msg "Writing new hostname to /etc/hosts ..."
+    echo "127.0.0.1       ${NEW_HOSTNAME}" | sudo tee -a /etc/hosts &>/dev/null
+    ok_msg "New hostname successfully configured!"
+    ok_msg "Remember to reboot for the changes to take effect!"
+  fi
 }