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/disable_root_login.sh

@@ -0,0 +1,107 @@
+#!/bin/bash
+
+# run-shellcheck
+#
+# CIS Debian Hardening
+#
+
+#
+# Ensure SSH root login is disabled (Scored)
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+# shellcheck disable=2034
+HARDENING_LEVEL=3
+# shellcheck disable=2034
+DESCRIPTION="Disable SSH Root Login."
+
+PACKAGE='openssh-server'
+OPTIONS=''
+FILE='/etc/ssh/sshd_config'
+
+# This function will be called if the script status is on enabled / audit mode
+audit() {
+    is_pkg_installed "$PACKAGE"
+    if [ "$FNRET" != 0 ]; then
+        ok "$PACKAGE is not installed!"
+    else
+        ok "$PACKAGE is installed"
+        for SSH_OPTION in $OPTIONS; do
+            SSH_PARAM=$(echo "$SSH_OPTION" | cut -d= -f 1)
+            SSH_VALUE=$(echo "$SSH_OPTION" | cut -d= -f 2)
+            PATTERN="^${SSH_PARAM}[[:space:]]*$SSH_VALUE"
+            does_pattern_exist_in_file_nocase "$FILE" "$PATTERN"
+            if [ "$FNRET" = 0 ]; then
+                ok "$PATTERN is present in $FILE"
+            else
+                crit "$PATTERN is not present in $FILE"
+            fi
+        done
+    fi
+}
+
+# This function will be called if the script status is on enabled mode
+apply() {
+    is_pkg_installed "$PACKAGE"
+    if [ "$FNRET" = 0 ]; then
+        ok "$PACKAGE is installed"
+    else
+        crit "$PACKAGE is absent, installing it"
+        apt_install "$PACKAGE"
+    fi
+    for SSH_OPTION in $OPTIONS; do
+        SSH_PARAM=$(echo "$SSH_OPTION" | cut -d= -f 1)
+        SSH_VALUE=$(echo "$SSH_OPTION" | cut -d= -f 2)
+        PATTERN="^${SSH_PARAM}[[:space:]]*$SSH_VALUE"
+        does_pattern_exist_in_file_nocase "$FILE" "$PATTERN"
+        if [ "$FNRET" = 0 ]; then
+            ok "$PATTERN is present in $FILE"
+        else
+            warn "$PATTERN is not present in $FILE, adding it"
+            does_pattern_exist_in_file_nocase "$FILE" "^$SSH_PARAM"
+            if [ "$FNRET" != 0 ]; then
+                add_end_of_file "$FILE" "$SSH_PARAM $SSH_VALUE"
+            else
+                info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing"
+                replace_in_file "$FILE" "^${SSH_PARAM}[[:space:]]*.*" "$SSH_PARAM $SSH_VALUE"
+            fi
+            /etc/init.d/ssh reload
+        fi
+    done
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+create_config() {
+    cat <<EOF
+# shellcheck disable=2034
+status=audit
+# Put here the root login boolean for ssh
+OPTIONS='PermitRootLogin=no'
+EOF
+}
+
+# Source Root Dir Parameter
+if [ -r /etc/default/cis-hardening ]; then
+    # shellcheck source=../../debian/default
+    . /etc/default/cis-hardening
+fi
+if [ -z "$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