V8.00.000.2025.06.17

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

README.md

@@ -11,8 +11,8 @@ include_toc: true
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func/system/4095_setup_skel.sh

@@ -0,0 +1,36 @@
+#!/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
+
+#######################################
+# Prepare '/etc/skel'-Directory.
+# Globals:
+#   TARGET
+# Arguments:
+#   None
+# Returns:
+#   0: on success
+#######################################
+setup_skel() {
+  install -D -m 0644 -o root -g root "${VAR_SETUP_PATH}/includes/etc/skel/.bashrc" "${TARGET}/etc/skel/"
+  install -D -m 0644 -o root -g root "${VAR_SETUP_PATH}/includes/etc/skel/.zshrc" "${TARGET}/etc/skel/"
+  install -D -m 0644 -o root -g root "${VAR_SETUP_PATH}/includes/root/.ciss/alias" "${TARGET}/etc/skel/.ciss/"
+  install -D -m 0644 -o root -g root "${VAR_SETUP_PATH}/includes/root/.ciss/clean_logout.sh" "${TARGET}/etc/skel/.ciss/"
+  install -D -m 0644 -o root -g root "${VAR_SETUP_PATH}/includes/root/.ciss/shortcuts" "${TARGET}/etc/skel/.ciss/"
+  # In order to be able to copy/paste from vim, one needs to create a '.vimrc' in every home directory with the following content:
+  echo 'set clipboard=unnamed' >| "${TARGET}/etc/skel/.vimrc"
+  chmod 0644 "${TARGET}/etc/skel/.vimrc"
+  do_log "info" "true" "Installed: '/etc/skel'-Files."
+  return 0
+}
+# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh

func/system/4200_setup_accounts.sh

@@ -75,6 +75,17 @@ setup_accounts() {
     fi
   fi
 
+  install -D -m 0600 -o root -g root "${VAR_SETUP_PATH}/includes/etc/skel/.bashrc" "${TARGET}/root/"
+  install -D -m 0600 -o root -g root "${VAR_SETUP_PATH}/includes/etc/skel/.zshrc" "${TARGET}/root/"
+  install -D -m 0600 -o root -g root "${VAR_SETUP_PATH}/includes/root/.ciss/alias" "${TARGET}/root/.ciss/"
+  install -D -m 0700 -o root -g root "${VAR_SETUP_PATH}/includes/root/.ciss/clean_logout.sh" "${TARGET}/root/.ciss/"
+  install -D -m 0600 -o root -g root "${VAR_SETUP_PATH}/includes/root/.ciss/shortcuts" "${TARGET}/root/.ciss/"
+  # To be able to copy/paste from vim, one needs to create a '.vimrc' with the following content:
+  echo 'set clipboard=unnamed' >| "${TARGET}/root/.vimrc"
+  chmod 0600 "${TARGET}/root/.vimrc"
+
+  do_log "info" "true" "User: 'root' updated."
+
   ### Install all user accounts.
   for ((i = 0; i <= VAR_USER_MAX; i++)); do
     tmp_username="user_user${i}_name"

includes/etc/skel/.bashrc

@@ -0,0 +1,103 @@
+#!/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
+
+[[ $- != *i* ]] && return
+
+# shellcheck disable=SC2312
+if [[ "$(id -u)" -eq 0 ]]; then
+  umask 0022
+  PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+else
+  umask 0077
+  PATH="/usr/local/bin:/usr/bin:/bin"
+fi
+export PATH
+
+trap ' "${SHELL}" "${HOME}/.ciss/clean_logout.sh" ' 0
+. "${HOME}/.ciss/alias"
+. "${HOME}/.ciss/f2bchk.sh"
+. "${HOME}/.ciss/shortcuts"
+. "${HOME}/.ciss/scan_libwrap"
+
+### Preferred editor for local and remote sessions.
+export EDITOR="nano"
+
+### History-Settings
+# -'ignoreboth' Do not put duplicate lines or lines starting with space in the history.
+# -'erasedups' Causes all previous lines matching the current line to be removed from the history list before that line is saved.
+export HISTCONTROL="erasedups"
+# The name of the file in which command history is saved. The default value is ~/.bash_history. If unset, the command history is
+# not saved when a shell exits.
+export HISTFILE=~/.bash_history
+# The maximum number of lines contained in the history file.
+export HISTFILESIZE="16384"
+# The number of commands to remember in the command history. If the value is 0, commands are not saved in the history list.
+# Numeric values less than zero result in every command being saved on the history list (there is no limit).
+export HISTSIZE="16384"
+# If this variable is set, time stamps are written to the history file, so they may be preserved across shell sessions.
+export HISTTIMEFORMAT='%F %T '
+
+# Check the window size after each command and, if necessary, update the values of "LINES" and "COLUMNS".
+shopt -s checkwinsize
+# Append to the history file, don't overwrite it.
+shopt -s histappend
+# If set, the pattern "**" used in a pathname expansion context will match all files and zero or more directories and subdirectories.
+shopt -s globstar
+
+### Define colors for bash prompt.
+export CRED='\033[1;91m'
+export CGRE='\033[1;92m'
+export CYEL='\033[1;93m'
+export CBLU='\033[1;94m'
+export CMAG='\033[1;95m'
+export CCYA='\033[1;96m'
+export CWHI='\033[1;97m'
+export CRES='\033[0m'
+export NL='\n'
+
+### Define color prompt incl. 'Exit Code' feedback.
+export PS1="\
+\[\033[1;91m\]\d\[\033[0m\]|\
+\[\033[1;91m\]\u\[\033[0m\]@\
+\[\033[1;95m\]\h\[\033[0m\]:\
+\[\033[1;96m\]\w\[\033[0m\]/>>\
+\$(if [[ \$? -eq 0 ]]; then \
+    echo -e \"\[\033[1;92m\]\$?\[\033[0m\]\"; \
+  else \
+    echo -e \"\[\033[1;91m\]\$?\[\033[0m\]\"; \
+  fi)\
+\$(if [[ \$(id -u) -eq 0 ]]; then echo -e \" \[\033[1;91m\]#\[\033[0m\] \"; else echo -e \" \[\033[1;92m\]\\\$\[\033[0m\] \"; fi)"
+
+### Overwrite Protection.
+set -o noclobber
+alias cp="cp -iv"
+alias mv='mv -iv'
+alias rm='rm -iv'
+
+### Welcome message after login.
+printf "\n"
+printf "\e[91m🔐 Coresecret Channel Established. \e[0m\n"
+printf "\e[92m✅ Welcome back\e[0m"; printf "\e[95m '%s' \e[0m" "${USER}"; printf "\e[92m! Type\e[0m"; printf "\e[95m 'celp'\e[0m"; printf "\e[92m for shortcuts. \e[0m\n"
+printf "\n"
+printf "\n"
+
+#printf "\n"
+#printf "%s🔐 Coresecret Channel Established. %s%s" "${CRED}" "${CRES}" "${NL}"
+#printf "%s✅ Welcome back %s " "${CGRE}" "${CRES}"
+#printf "%s'%s'%s" "${CMAG}" "${USER}" "${CRES}"
+#printf "%s! Type%s " "${CGRE}" "${CRES}"
+#printf "%s'celp'%s " "${CMAG}" "${CRES}"
+#printf "%sfor shortcuts. %s%s" "${CGRE}" "${CRES}" "${NL}"
+#printf "\n"
+#printf "\n"
+
+# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh

includes/etc/skel/.zshrc

@@ -0,0 +1,178 @@
+#!/bin/zsh
+# 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
+
+[[ $- != *i* ]] && return
+
+# shellcheck disable=SC2312
+if [[ "$(id -u)" -eq 0 ]]; then
+  umask 0022
+  # If you come from bash, you might have to change your $PATH.
+  PATH="${HOME}/bin:${HOME}/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+else
+  umask 0077
+  # If you come from bash, you might have to change your $PATH.
+  PATH="${HOME}/bin:${HOME}/.local/bin:/usr/local/bin:/usr/bin:/bin"
+fi
+export PATH
+
+### Path to your Oh My Zsh installation.
+export ZSH="${HOME}/.oh-my-zsh"
+
+# Set the name of the theme to load --- if set to "random", it will load a random theme each time Oh My Zsh is loaded, in which
+# case, to know which specific one was loaded, run: echo $RANDOM_THEME. See https://github.com/ohmyzsh/ohmyzsh/wiki/Themes
+export ZSH_THEME="robbyrussell"
+
+# Set the list of themes to pick from when loading at random Setting this variable when ZSH_THEME=random will cause zsh to load
+# a theme from this variable instead of looking in $ZSH/themes/. If set to an empty array, this variable will have no effect.
+# ZSH_THEME_RANDOM_CANDIDATES=( "robbyrussell" "agnoster" )
+
+# Uncomment the following line to use case-sensitive completion.
+# CASE_SENSITIVE="true"
+
+# Uncomment the following line to use hyphen-insensitive completion. Case-sensitive completion must be off. _ and - will be
+# interchangeable.
+# HYPHEN_INSENSITIVE="true"
+
+# Uncomment one of the following lines to change the auto-update behavior
+# zstyle ':omz:update' mode disabled  # disable automatic updates
+# zstyle ':omz:update' mode auto      # update automatically without asking
+# zstyle ':omz:update' mode reminder  # just remind me to update when it's time
+
+# Uncomment the following line to change how often to auto-update (in days).
+# zstyle ':omz:update' frequency 13
+
+# Uncomment the following line if pasting URLs and other text is messed up.
+# DISABLE_MAGIC_FUNCTIONS="true"
+
+# Uncomment the following line to disable colors in ls.
+# DISABLE_LS_COLORS="true"
+
+# Uncomment the following line to disable auto-setting terminal title.
+# DISABLE_AUTO_TITLE="true"
+
+# Uncomment the following line to enable command autocorrection.
+# ENABLE_CORRECTION="true"
+
+# Uncomment the following line to display red dots whilst waiting for completion. You can also set it to another string to have
+# that is shown instead of the default red dots.
+# e.g., COMPLETION_WAITING_DOTS="%F{yellow}waiting...%f"
+# Caution: this setting can cause issues with multiline prompts in zsh < 5.7.1 (see #5765)
+# COMPLETION_WAITING_DOTS="true"
+
+# Uncomment the following line if you want to disable marking untracked files under VCS as dirty. This makes repository status
+# check for large repositories much, much faster.
+# DISABLE_UNTRACKED_FILES_DIRTY="true"
+
+# Uncomment the following line if you want to change the command execution time stamp shown in the history command output.
+# You can set one of the optional three formats:
+# "mm/dd/yyyy"|"dd.mm.yyyy"|"yyyy-mm-dd"
+# or set a custom format using the strftime function format specifications, see 'man strftime' for details.
+export HIST_STAMPS="yyyy-mm-dd"
+
+# Would you like to use another custom folder than $ZSH/custom?
+# ZSH_CUSTOM=/path/to/new-custom-folder
+
+# Which plugins would you like to load?
+# Standard plugins can be found in $ZSH/plugins/
+# Custom plugins may be added to $ZSH_CUSTOM/plugins/
+# Example format: plugins=(rails git textmate ruby lighthouse)
+# Add wisely, as too many plugins slow down shell startup.
+export plugins=(git zsh-syntax-highlighting zsh-autosuggestions)
+
+source ${ZSH}/oh-my-zsh.sh
+
+# User configuration
+
+# export MANPATH="/usr/local/man:{$MANPATH}"
+
+# You may need to manually set your language environment
+# export LANG=en_US.UTF-8
+
+# Preferred editor for local and remote sessions
+# if [[ -n $SSH_CONNECTION ]]; then
+#   export EDITOR='vim'
+# else
+#   export EDITOR='nvim'
+# fi
+
+# Compilation flags
+# export ARCHFLAGS="-arch $(uname -m)"
+
+# Set personal aliases, overriding those provided by Oh My Zsh libs,
+# plugins, and themes. Aliases can be placed here, though Oh My Zsh
+# users are encouraged to define aliases within a top-level file in
+# the $ZSH_CUSTOM folder, with .zsh extension. Examples:
+# - $ZSH_CUSTOM/aliases.zsh
+# - $ZSH_CUSTOM/macos.zsh
+# For a full list of active aliases, run `alias`.
+#
+# Example aliases
+# alias zshconfig="mate ~/.zshrc"
+# alias ohmyzsh="mate ~/.oh-my-zsh"
+
+### Added by CISS.debian.hardening ###
+trap ' "${SHELL}" "${HOME}/.ciss/clean_logout.sh" ' 0
+. "${HOME}/.ciss/alias"
+. "${HOME}/.ciss/shortcuts"
+. "${HOME}/.ciss/scan_libwrap"
+. /usr/share/doc/fzf/examples/key-bindings.zsh
+. /usr/share/doc/fzf/examples/completion.zsh
+
+### Define colors for bash prompt
+export CRED='\033[1;91m'
+export CGRE='\033[1;92m'
+export CYEL='\033[1;93m'
+export CBLU='\033[1;94m'
+export CMAG='\033[1;95m'
+export CCYA='\033[1;96m'
+export CWHI='\033[1;97m'
+export CRES='\033[0m'
+export NL='\n'
+
+### Overwrite Protection
+set -o noclobber
+alias cp="cp -iv"
+alias mv='mv -iv'
+alias rm='rm -iv'
+
+### Preferred editor for local and remote sessions
+export EDITOR="nano"
+
+### History
+export HISTFILE="${HOME}/.zsh_history"
+export HISTSIZE=4294967296
+export SAVEHIST=4294967296
+setopt EXTENDED_HISTORY
+
+### Define Users
+if [ "${UID}" -eq 0 ]; then
+  export USER_COLOR="%F{001}"
+else
+  export USER_COLOR="%F{002}"
+fi
+
+### CISS.debian.hardening Prompt
+PROMPT='${USER_COLOR}%D%f|${USER_COLOR}%n%f@%F{005}%M%f:%F{006}%d%f/>>%(?.%F{002}%?.%F{001}%?)%f|~%#> '
+RPROMPT='%h|[${USER_COLOR}%*%f]'
+
+### Welcome message after login.
+printf "\n"
+printf "%s🔐 Coresecret Channel Established. %s%s" "${CRED}" "${CRES}" "${NL}"
+printf "%s✅ Welcome back %s " "${CGRE}" "${CRES}"
+printf "%s'%s'%s" "${CMAG}" "${USER}" "${CRES}"
+printf "%s! Type%s " "${CGRE}" "${CRES}"
+printf "%s'celp'%s " "${CMAG}" "${CRES}"
+printf "%sfor shortcuts. %s%s" "${CGRE}" "${CRES}" "${NL}"
+printf "\n"
+printf "\n"
+
+# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh

includes/root/.ciss/alias

@@ -119,6 +119,7 @@ genpasswd() {
   done
 
   declare passwd
+  # shellcheck disable=SC2312
   passwd=$(tr -dc 'A-Za-z0-9_' < /dev/random | head -c "${length}")
 
   if [[ ${usebase64} -eq 1 ]]; then
@@ -136,6 +137,7 @@ genpasswd() {
 # shellcheck disable=SC2317
 genpasswdhash() {
   declare salt
+  # shellcheck disable=SC2312
   salt=$(tr -dc 'A-Za-z0-9' < /dev/random | head -c 16)
   mkpasswd --method=sha-512 --salt="${salt}" --rounds=8388608
 }
@@ -146,11 +148,16 @@ genpasswdhash() {
 #   None
 #######################################
 genstring() {
+  # shellcheck disable=SC2312
   (haveged -n 1000 -f - 2>/dev/null | tr -cd '[:graph:]' | fold -w 16 && echo ) | head
 }
 
 #######################################
 # Wrapper for secure curl
+# Globals:
+#   CRED
+#   CRES
+#   NL
 # Arguments:
 #   1: URL from which to download a specific file
 #   2: /path/to/file to be saved to
@@ -161,7 +168,7 @@ genstring() {
 #######################################
 scurl() {
   if [[ $# -ne 2 ]]; then
-    printf "\e[91m❌ Error: Usage: scurl <URL> <path/to/file>.\e[0m\n" >&2
+    printf "%s❌ Error: Usage: scurl <URL> <path/to/file>. %s%s" "${CRED}" "${CRES}" "${NL}" >&2
     return 1
   fi
   declare url="$1"
@@ -173,7 +180,7 @@ scurl() {
             -o "${output_path}" \
             "${url}"
   then
-    printf "\e[91m❌ Error: Download failed for URL: '%s'.\e[0m\n" "${url}" >&2
+    printf "%s❌ Error: Download failed for URL: '%s'. %s%s" "${CRED}" "${url}" "${CRES}" "${NL}" >&2
     return 2
   fi
   return 0
@@ -181,6 +188,10 @@ scurl() {
 
 #######################################
 # Wrapper for secure wget
+# Globals:
+#   CRED
+#   CRES
+#   NL
 # Arguments:
 #   1: URL from which to download a specific file
 #   2: /path/to/file to be saved to
@@ -191,7 +202,7 @@ scurl() {
 #######################################
 swget() {
   if [[ $# -ne 2 ]]; then
-    printf "\e[91m❌ Error: Usage: swget <URL> <path/to/file>.\e[0m\n" >&2
+    printf "%s❌ Error: Usage: swget <URL> <path/to/file>. %s%s" "${CRED}" "${CRES}" "${NL}" >&2
     return 1
   fi
   declare url="$1"
@@ -204,21 +215,22 @@ swget() {
             -qO "${output_path}" \
             "${url}"
   then
-    printf "\e[91m❌ Error: Download failed for URL: '%s'.\e[0m\n" "$url" >&2
+    printf "%s❌ Error: Download failed for URL: '%s'. %s%s" "${CRED}" "${url}" "${CRES}" "${NL}" >&2
     return 2
   fi
   return 0
 }
 
 #######################################
-# Wrapper for loading CISS.2025 hardened Kernel Parameters
+# Wrapper for loading CISS.2025 hardened Kernel Parameters.
 # Arguments:
 #   None
 #######################################
 sysp() {
   sysctl -p /etc/sysctl.d/99_local.hardened
   # sleep 1
-  sysctl -a | grep -E 'kernel|vm|net' > /var/log/sysctl_check"$(date +"%Y-%m-%d_%H:%M:%S")".log
+  # shellcheck disable=SC2312
+  sysctl -a | grep -E 'kernel|vm|net' >| /var/log/sysctl_check"$(date +"%Y-%m-%d_%H:%M:%S")".log
 }
 
 #######################################
@@ -238,9 +250,10 @@ trel() {
 #######################################
 whichpackage() {
   if ! command -v "$1" >/dev/null 2>&1; then
-    printf 'Error: Program '%s' not found.\n' "$1" >&2
+    printf '%s❌ Error: Program '%s' not found. %s%s' "${CRED}" "$1" "${CRES}" "${NL}" >&2
     exit 1
   fi
+  # shellcheck disable=SC2230,SC2312
   dpkg -S "$(which "$1")"
 }
 
@@ -252,6 +265,7 @@ whichpackage() {
 #   3: Number of Entries (defaults 16)
 #######################################
 whichused() {
+  # shellcheck disable=SC2312
   du -h --max-depth="${2:-1}" "${1:-/var}" | sort -hr | head -n "${3:-16}"
 }
 # vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh

includes/root/.ciss/clean_logout.sh

@@ -36,4 +36,6 @@ echo -e "\e[92m          All done" "\e[95m'${USER}'" "\e[92m! \e[0m"
 echo -e "\e[92m          Close shell with 'ENTER' to exit" "\e[95m'${HOSTNAME}'" "\e[92m! \e[0m"
 # shellcheck disable=SC2162
 read
+[[ -x /usr/bin/clear_console ]] && /usr/bin/clear_console -q
+exit 0
 # vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh

includes/root/.ciss/f2bchk.sh

@@ -19,7 +19,10 @@ set -Ceuo pipefail
 #               --log=/var/log/ufw.log \
 #               --output=/tmp/f2bchk.log
 # Globals:
-#   None
+#   CGRE
+#   CRED
+#   CRES
+#   NL
 # Arguments:
 #   None
 # Returns:
@@ -27,7 +30,7 @@ set -Ceuo pipefail
 #   1: In case of any errors
 #######################################
 f2bchk(){
-  # Declare default values (readonly)
+  ### Declare default values (readonly)
   declare -r DEFAULT_MODE="matched"
   declare -r DEFAULT_FILTER="/etc/fail2ban/filter.d/ufw.aggressive.conf"
   declare -r DEFAULT_LOG="/var/log/ufw.log"
@@ -45,7 +48,7 @@ f2bchk(){
       --log=*)    log="${arg#--log=}";;
       --output=*) output="${arg#--output=}";;
       *)
-        printf "\e[31m[ERROR]\e[0m Unknown argument: %s\n" "${arg}"
+        printf "%s[ERROR]%s Unknown argument: '%s' %s" "${CRED}" "${CRES}" "${arg}" "${CRED}"
         return 1
         ;;
     esac
@@ -57,7 +60,7 @@ f2bchk(){
     matched) flag="--print-all-matched"; suffix="all.matched";;
     missed)  flag="--print-all-missed";  suffix="all.missed";;
     *)
-      printf "\e[31m[ERROR]\e[0m Invalid mode: %s\n" "${mode}"
+      printf "%s[ERROR]%s Invalid mode: '%s' %s" "${CRED}" "${CRES}" "${mode}" "${NL}"
       return 1
       ;;
   esac
@@ -67,24 +70,30 @@ f2bchk(){
     filter_name="${filter_name%.conf}"
     output="/tmp/${filter_name}.${suffix}.log"
   fi
+
   if [[ ! -r "${log}" ]]; then
-    printf "\e[31m[ERROR]\e[0m Log file '%s' not found or not readable.\n" "${log}"
-    return 1
-  fi
-  if [[ ! -r "${filter}" ]]; then
-    printf "\e[31m[ERROR]\e[0m Filter file '%s' not found or not readable.\n" "${filter}"
+    printf "%s[ERROR]%s Log file '%s' not found or not readable. %s" "${CRED}" "${CRES}" "${log}" "${NL}"
     return 1
   fi
 
-  printf "\e[33m[INFO]\e[0m Running: fail2ban-regex %s %s %s\n" "${log}" "${filter}" "${flag}"
-  if fail2ban-regex "${log}" "${filter}" "${flag}" >| "${output}"; then
-    printf "\e[32m[SUCCESS]\e[0m Saved log to %s\n" "$output"
-    printf "You can view it with: cat %s\n" "$output"
-  else
-    printf "\e[31m[ERROR]\e[0m fail2ban-regex execution failed.\n"
+  if [[ ! -r "${filter}" ]]; then
+    printf "%s[ERROR]%s Filter file '%s' not found or not readable. %s" "${CRED}" "${CRES}" "${filter}" "${NL}"
     return 1
   fi
 
+  printf "%s[INFO]%s Running: fail2ban-regex '%s %s %s' %s" "${CGRE}" "${CRES}" "${log}" "${filter}" "${flag}" "${NL}"
+
+  if fail2ban-regex "${log}" "${filter}" "${flag}" >| "${output}"; then
+
+    printf "%s[SUCCESS]%s Saved log to: '%s' %s" "${CGRE}" "${CRES}" "${output}" "${NL}"
+    printf "You can view it with: cat %s%s" "${output}" "${NL}"
+  else
+
+    printf "%s[ERROR]%s fail2ban-regex execution failed. %s" "${CRED}" "${CRES}" "${NL}"
+    return 1
+
+  fi
+
   exit 0
 }
 # vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh

includes/root/.ciss/scan_libwrap

@@ -12,31 +12,38 @@
 
 #######################################
 # Scanner for 'libwrap' usage.
+# Globals:
+#   CGRE
+#   CRES
+#   NL
 # Arguments:
 #   None
 #######################################
 scanlw() {
-  printf "\e[92m🔍 Scanning all running processes for 'libwrap' usage ... \e[0m\n"
+  printf "%s🔍 Scanning all running processes for 'libwrap' usage ... %s%s" "${CGRE}" "${CRES}" "${NL}"
   printf "\n"
 
-  # Collect binaries from all running PIDs
+  ### Collect binaries from all running PIDs.
   declare pid exe_path comm user
 
   for pid in $(ps -e -o pid=); do
     exe_path=$(readlink -f "/proc/${pid}/exe" 2>/dev/null)
 
-    # Skip if not a regular executable
+    ### Skip if not a regular executable.
     [[ -x "${exe_path}" ]] || continue
 
-    # Check if the binary is linked with libwrap
-    if ldd "$exe_path" 2>/dev/null | grep -q "libwrap"; then
-      comm=$(ps -p "$pid" -o comm=)
-      user=$(ps -p "$pid" -o user=)
-      printf "\e[92m✅ PID: %s (%s) [User: %s] is linked with 'libwrap.so'. \e[0m\n" "${pid}" "${comm}" "${user}"
+    ### Check if the binary is linked with libwrap.
+    # shellcheck disable=SC2312
+    if ldd "${exe_path}" 2>/dev/null | grep -q "libwrap"; then
+      comm=$(ps -p "${pid}" -o comm=)
+      user=$(ps -p "${pid}" -o user=)
+      printf "%s✅ PID: %s (%s) [User: %s] is linked with 'libwrap.so'. %s%s" "${CGRE}" "${pid}" "${comm}" "${user}" "${CRES}" "${NL}"
     fi
   done
+
   printf "\n"
-  printf "\e[92m✅ Scan complete. \e[0m\n"
+  printf "%s✅ Scan complete. %s%s" "${CGRE}" "${CRES}" "${NL}"
+
   exit 0
 }
 # vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh

includes/root/.ciss/shortcuts

@@ -104,7 +104,7 @@ celp() {
   declare i=0
   declare entry
   for entry in "${arr[@]}"; do
-    # Print entry left-aligned in fixed width, colored
+    ### Print entry left-aligned in fixed width, colored.
     printf "${CMAG}%-${col_width}s${CRES}" "${entry}"
     ((i++))
     if ((i % cols == 0)); then