V8.00.000.2025.06.17

Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
2025-07-23 08:50:22 +02:00
parent 328e346c95
commit 080e04efa3
52 changed files with 35 additions and 37 deletions
--- a/func/system/4155_setup_grub_password.sh
+++ b/func/system/4155_setup_grub_password.sh
@@ -0,0 +1,95 @@
+#!/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
+
+guard_sourcing
+
+#######################################
+# Append GRUB superuser block to 40_custom.
+# Arguments:
+#   1: Username
+#   2: Password
+#######################################
+
+#######################################
+# Append GRUB superuser block to '/etc/grub.d/40_custom'.
+# Globals:
+#   DIR_CNF
+#   ERR_READ_GRUB_FILE
+#   TARGET
+#   VAR_DEBUG_TRACE
+# Arguments:
+#   None
+# Returns:
+#   0: on success
+#   ERR_READ_GRUB_FILE
+#######################################
+setup_grub_password() {
+  declare var_username="superadmin"
+  declare var_password=""
+  declare var_password_file="${DIR_CNF}/password_grub.txt"
+  declare var_of="${TARGET}/etc/grub.d/40_custom"
+  declare var_grub_entry
+
+  ### No tracing for security reasons
+  [[ "${VAR_DEBUG_TRACE,,}" == "true" ]] && set +x
+  if [[ ! -f "${var_password_file}" ]] || ! IFS= read -r var_password < "${var_password_file}"; then
+    return "${ERR_READ_GRUB_FILE}"
+  fi
+  ### Turn on tracing again
+  [[ "${VAR_DEBUG_TRACE,,}" == "true" ]] && set -x
+
+  var_grub_entry=$(generate_grub_password_pbkdf2 "${var_username}" "${var_password}")
+
+  ### Append if not already present
+  if ! grep -q "set superusers=" "${var_of}"; then
+    {
+      echo ""
+      echo "### Added by CISS.debian.installer ###"
+      echo "$var_grub_entry"
+      echo "### End by CISS.debian.installer ###"
+    } >> "$var_of"
+  fi
+
+  do_in_target "${TARGET}" update-grub
+
+  return 0
+}
+
+#######################################
+# Generate PBKDF2 password hash for GRUB.
+# Arguments:
+#   1: Username (default to superadmin).
+#   2: User password.
+# Returns:
+#   0: on success
+#######################################
+generate_grub_password_pbkdf2() {
+  declare var_user="${1:-superadmin}"
+  declare var_pass="${2:?error: password required}"
+
+  expect <<EOF
+    log_user 0
+    spawn grub-mkpasswd-pbkdf2 --iteration-count=131072 --salt=64 --buflen=64
+    expect "Enter password:"
+    send "$var_pass\r"
+    expect "Reenter password:"
+    send "$var_pass\r"
+    expect {
+      -re {PBKDF2 hash of your password is (\S+)} {
+        puts "set superusers=\"$var_user\"\npassword_pbkdf2 $var_user \$expect_out(1,string)"
+      }
+    }
+EOF
+
+ return 0
+}
+# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh