Add commentaries, renum scripts

bin/hardening/1.4.2_tripwire_cron.sh

@@ -0,0 +1,84 @@
+#!/bin/bash
+
+# run-shellcheck
+#
+# CIS Debian Hardening
+#
+
+#
+# 1.4.2 Ensure filesysteme integrity is regularly checked (Scored)
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+# shellcheck disable=2034
+HARDENING_LEVEL=4
+# shellcheck disable=2034
+DESCRIPTION="Implemet periodic execution of file integrity."
+
+# Note : in CIS, AIDE has been chosen, however we chose tripwire
+
+FILES="/etc/crontab"
+DIRECTORY="/etc/cron.d"
+PATTERN='tripwire --check'
+
+# This function will be called if the script status is on enabled / audit mode
+audit() {
+    FILES="$FILES $($SUDO_CMD find $DIRECTORY -type f)"
+    FOUND=0
+    for FILE in $FILES; do
+        does_pattern_exist_in_file "$FILE" "$PATTERN"
+        if [ "$FNRET" = 0 ]; then
+            FOUND=1
+        fi
+    done
+    if [ $FOUND = 1 ]; then
+        ok "$PATTERN is present in $FILES"
+    else
+        crit "$PATTERN is not present in $FILES"
+    fi
+}
+
+# This function will be called if the script status is on enabled mode
+apply() {
+    FILES="$FILES $($SUDO_CMD find $DIRECTORY -type f)"
+    FOUND=0
+    for FILE in $FILES; do
+        does_pattern_exist_in_file "$FILE" "$PATTERN"
+        if [ "$FNRET" = 0 ]; then
+            FOUND=1
+        fi
+    done
+    if [ "$FOUND" != 1 ]; then
+        warn "$PATTERN is not present in $FILES, setting tripwire cron"
+        echo "0 10 * * * root /usr/sbin/tripwire --check > /dev/shm/tripwire_check 2>&1 " >/etc/cron.d/CIS_8.3.2_tripwire
+    else
+        ok "$PATTERN is present in $FILES"
+    fi
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ -r /etc/default/cis-hardening ]; then
+    # shellcheck source=../../debian/default
+    . /etc/default/cis-hardening
+fi
+if [ -z "$CIS_ROOT_DIR" ]; then
+    echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
+    echo "Cannot source CIS_ROOT_DIR variable, aborting."
+    exit 128
+fi
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+if [ -r "$CIS_ROOT_DIR"/lib/main.sh ]; then
+    # shellcheck source=../../lib/main.sh
+    . "$CIS_ROOT_DIR"/lib/main.sh
+else
+    echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
+    exit 128
+fi