V8.00.000.2025.06.17

Signed-off-by: Marc S. Weidner <msw@coresecret.dev>

lib/0080_trap_int.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+# SPDX-Version: 3.0
+# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
+# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
+# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
+# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
+# SPDX-FileType: SOURCE
+# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
+# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
+# SPDX-PackageName: CISS.debian.installer
+# SPDX-Security-Contact: security@coresecret.eu
+
+#######################################
+# Restart Dialog Wrapper in case of unintentional SIGINT.
+# Arguments:
+#   $1: Dialog Wrapper in use.
+#######################################
+restart_dialog() {
+  trap 'trap_int' INT
+  trap 'trap_err "$?" "${BASH_SOURCE[0]}" "${LINENO}" "${FUNCNAME[0]:-main}" "${BASH_COMMAND}"' ERR
+  case "$1" in
+    box   ) dialog_box   ;;
+    gauge ) dialog_gauge ;;
+    *     ) ;;
+  esac
+}
+
+#######################################
+# Trap function to be called on 'SIGINT'.
+# Globals:
+#   ERR_TRAPPED_SIG_INT
+#   VAR_IN_DIALOG_WR
+# Arguments:
+#  None
+# Returns:
+#   0: In case of unintentional SIGINT.
+#######################################
+trap_int() {
+  case "${VAR_IN_DIALOG_WR}" in
+    box   ) dialog_box_cleaner;   declare var_helper_dialog=box   ;;
+    gauge ) dialog_gauge_cleaner; declare var_helper_dialog=gauge ;;
+    *     ) declare var_helper_dialog=false ;;
+  esac
+
+  trap '' ERR INT
+
+  declare answer
+  if ! read -r -t 16 -p $'\n\e[93mCISS.debian.installer caught an INT.\e[0m \e[92mDo you want to abort the Installer? (y/N) \e[0m' answer; then
+    printf "\e[92mCISS.debian.installer caught an INT. No User confirmation after 16 seconds. Proceeding with Installer. \e[0m\n" >&2
+    if [[ "${var_helper_dialog}" == box ]]; then
+      restart_dialog "${var_helper_dialog}"
+      return 0
+    elif [[ "${var_helper_dialog}" == gauge ]]; then
+      restart_dialog "${var_helper_dialog}"
+      return 0
+    else
+      restart_dialog "${var_helper_dialog}"
+      return 0
+    fi
+  fi
+
+  case "${answer,,}" in
+    y|yes)
+      printf "\e[91mCISS.debian.installer caught an INT. SIGINT confirmed by User, exiting Installer. \e[0m\n" >&2
+      exit "${ERR_TRAPPED_SIG_INT}"
+      ;;
+    *)
+      printf "\e[92mCISS.debian.installer caught an INT. SIGINT NOT confirmed by User, proceeding with Installer. \e[0m\n" >&2
+      if [[ "${var_helper_dialog}" == box ]]; then
+        restart_dialog "${var_helper_dialog}"
+        return 0
+      elif [[ "${var_helper_dialog}" == gauge ]]; then
+        restart_dialog "${var_helper_dialog}"
+        return 0
+      else
+        restart_dialog "${var_helper_dialog}"
+        return 0
+      fi
+      ;;
+  esac
+}
+# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh