Damcava35/set version (#257)

* feat: add "--set-version" option

This feature will allow to chose a specific cis version to run, like debian 11 or debian 12

* chore: configure current repository as a version

And use it as default version.

To this end, the scripts in bin/hardening have been made generic by removing the associated recommendation number.
Only impact is if you are used to execute scripts directly from bin/hardening.
In this case, please use the "bin/hardening.sh" wrapper as intended.

I had to rename 2.3.1_disable_nis.sh to uninstall_nis.sh, as it was conflicting with 2.3.1_disable_nis.sh

Also, there was a doublon between 1.1.1.8_disable_cramfs.sh and 99.1.1.1_disable_cramfs.sh ; the former was kept

* chore: remove CIS recommendation numbers from bin/hardening scripts

* fix: some tests are failing

find_ungrouped_files.sh and find_unowned_files.sh tests can not be executed multiple times:
- test repository is not cleaned
- configuration is updated multiple times

Those tests are also failing, because:
- the sed to change the status in the configuration was also changing the test folder path.
- missing /proc in EXCLUDED paths
- the EXCLUDED configuration doesn't have the correct format for egrep

---------

Co-authored-by: Damien Cavagnini <damien.cavagnini@corp.ovh.com>

bin/hardening/sanitize_root_path.sh

@@ -0,0 +1,100 @@
+#!/bin/bash
+
+# run-shellcheck
+#
+# CIS Debian Hardening
+#
+
+#
+# Ensure root PATH Integrity (Scored)
+#
+
+# set path to the $PATH environnement variable if path is not defined
+# used in test
+[[ $path && ${path-x} ]] || path=$PATH
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+# shellcheck disable=2034
+HARDENING_LEVEL=2
+# shellcheck disable=2034
+DESCRIPTION="Ensure root path integrity."
+
+ERRORS=0
+
+# This function will be called if the script status is on enabled / audit mode
+audit() {
+    if [ "$(echo "$path" | grep ::)" != "" ]; then
+        crit "Empty Directory in PATH (::)"
+        ERRORS=$((ERRORS + 1))
+    fi
+    if [ "$(echo "$path" | grep :$)" != "" ]; then
+        crit "Trailing : in PATH $path"
+        ERRORS=$((ERRORS + 1))
+    fi
+    FORMATTED_PATH=$(echo "$path" | sed -e 's/::/:/' -e 's/:$//' -e 's/:/ /g')
+    # shellcheck disable=SC2086
+    set -- $FORMATTED_PATH
+    while [ "${1:-}" != "" ]; do
+        if [ "$1" = "." ]; then
+            crit "PATH contains ."
+            ERRORS=$((ERRORS + 1))
+        else
+            if [ -d "$1" ]; then
+                dirperm=$(stat -L -c "%A" "$1")
+                dirown=$(stat -c "%U" "$1")
+                if [ "$(echo "$dirperm" | cut -c6)" != "-" ]; then
+                    crit "Group Write permission set on directory $1"
+                    ERRORS=$((ERRORS + 1))
+                fi
+                if [ "$(echo "$dirperm" | cut -c9)" != "-" ]; then
+                    crit "Other Write permission set on directory $1"
+                    ERRORS=$((ERRORS + 1))
+                fi
+                if [ "$dirown" != "root" ]; then
+                    crit "$1 is not owned by root"
+                    ERRORS=$((ERRORS + 1))
+                fi
+            else
+                crit "$1 is not a directory"
+                ERRORS=$((ERRORS + 1))
+            fi
+        fi
+        shift
+    done
+
+    if [ "$ERRORS" = 0 ]; then
+        ok "root PATH is secure"
+    fi
+}
+
+# This function will be called if the script status is on enabled mode
+apply() {
+    info "Editing items from PATH may seriously harm your system, report only here"
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ -r /etc/default/cis-hardening ]; then
+    # shellcheck source=../../debian/default
+    . /etc/default/cis-hardening
+fi
+if [ -z "$CIS_LIB_DIR" ]; then
+    echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
+    echo "Cannot source CIS_LIB_DIR variable, aborting."
+    exit 128
+fi
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+if [ -r "${CIS_LIB_DIR}"/main.sh ]; then
+    # shellcheck source=../../lib/main.sh
+    . "${CIS_LIB_DIR}"/main.sh
+else
+    echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_LIB_DIR in /etc/default/cis-hardening"
+    exit 128
+fi