#!/bin/sh

#################################################################################
#
#   Lynis
# ------------------
#
# Copyright 2007-2013, Michael Boelen
# Copyright 2013-2016, CISOfy
#
# Website  : https://cisofy.com
# Blog     : http://linux-audit.com
# GitHub   : https://github.com/CISOfy/lynis
#
# Lynis comes with ABSOLUTELY NO WARRANTY. This is free software, and you are
# welcome to redistribute it under the terms of the GNU General Public License.
# See LICENSE file for usage of this software.
#
#################################################################################
#
    AUTOMATION_TOOL_FOUND=0
    AUTOMATION_TOOL_RUNNING=""
    CFENGINE_AGENT_FOUND=0
    CFENGINE_SERVER_RUNNING=0
    BACKUP_AGENT_FOUND=0
    PUPPET_MASTER_RUNNING=0
    SALT_MASTER_RUNNING=0
    SALT_MINION_RUNNING=0
    IPS_TOOL_FOUND=0
    FAIL2BAN_FOUND=0
    FAIL2BAN_EMAIL=0
    FAIL2BAN_SILENT=0
#
#################################################################################
#
    InsertSection "Software: System tooling"
#
#################################################################################
#
# Automation
#
#################################################################################
#
    # Test        : TOOL-5002
    # Description : Check if automation tools are found
    Register --test-no TOOL-5002 --weight L --network NO --description "Checking for automation tools"
    if [ ${SKIPTEST} -eq 0 ]; then

        Display --indent 2 --text "- Checking automation tooling"

        # Cfengine
        if [ ! "${CFAGENTBINARY}" = "" ]; then
            LogText "Result: CFEngine (cfagent) is installed (${CFAGENTBINARY})"
            AUTOMATION_TOOL_FOUND=1
            CFENGINE_AGENT_FOUND=1
            Report "automation_tool_running[]=cf-agent"
            Display --indent 4 --text "Found: Cfengine (cfagent)" --result "${STATUS_FOUND}" --color GREEN
        fi
        OTHER_CFENGINE_LOCATIONS="/var/cfengine/bin"
        for I in ${OTHER_CFENGINE_LOCATIONS}; do
            if [ -d ${I} ]; then
                if [ -f ${I}/cf-agent ]; then
                    LogText "Result: found CFEngine agent (cf-agent) in ${I}"
                    AUTOMATION_TOOL_FOUND=1
                    CFENGINE_AGENT_FOUND=1
                    Report "automation_tool_running[]=cf-agent"
                    Display --indent 4 --text "Found: CFEngine (cf-agent)" --result "${STATUS_FOUND}" --color GREEN
                fi
                IsRunning "cf-server"
                if [ ${RUNNING} -eq 1 ]; then
                    LogText "Result: found CFEngine server"
                    AUTOMATION_TOOL_FOUND=1
                    CFENGINE_SERVER_RUNNING=1
                    Report "automation_tool_running[]=cf-server"
                    Display --indent 4 --text "Found: CFEngine (cf-server)" --result "${STATUS_FOUND}" --color GREEN
                fi
            fi
        done

        # Chef
        CHEF_LOCATIONS="/opt/chef/bin /opt/chef-server/sv /opt/chefdk/bin"
        for I in ${CHEF_LOCATIONS}; do
            if [ -d ${I} ]; then
                if [ -f ${I}/chef-client ]; then
                    CHEFCLIENTBINARY="${I}/chef-client"
                    AUTOMATION_TOOL_FOUND=1
                    Report "automation_tool_running[]=chef-client"
                    Display --indent 4 --text "Found: Chef client (chef-client)" --result "${STATUS_FOUND}" --color GREEN
                    LogText "Result: found chef-client (chef client daemon) in ${I}"
                fi
                if [ -f ${I}/erchef ]; then
                    CHEFSERVERBINARY="${I}/erchef"
                    LogText "Result: Chef Server (erchef) is installed (${CHEFSERVERBINARY})"
                    AUTOMATION_TOOL_FOUND=1
                    Report "automation_tool_running[]=chef-server"
                    Display --indent 4 --text "Found: Chef Server (erchef)" --result "${STATUS_FOUND}" --color GREEN
                    LogText "Result: found erchef (chef server daemon) in ${I}"
                fi
            fi
        done

        # Puppet
        if [ ! "${PUPPETBINARY}" = "" ]; then
            LogText "Result: Puppet is installed (${PUPPETBINARY})"
            AUTOMATION_TOOL_FOUND=1
            Report "automation_tool_running[]=puppet-agent"
            Display --indent 4 --text "Found: Puppet (agent)" --result "${STATUS_FOUND}" --color GREEN
        fi
        IsRunning "puppet master"
        if [ ${RUNNING} -eq 1 ]; then
            LogText "Result: found puppet master"
            PUPPET_MASTER_RUNNING=1
            Report "automation_tool_running[]=puppet-master"
            Display --indent 4 --text "Found: Puppet (master)" --result "${STATUS_FOUND}" --color GREEN
        fi

        # SaltStack
        if [ ! "${SALTMINIONBINARY}" = "" ]; then
            LogText "Result: SaltStack (salt-minion) is installed (${SALTMINIONBINARY})"
            AUTOMATION_TOOL_FOUND=1
            SALT_MINION_RUNNING=1
            Report "automation_tool_running[]=saltstack-minion"
            Display --indent 4 --text "Found: SaltStack minion (salt-minion)" --result "${STATUS_FOUND}" --color GREEN
        fi
        if [ ! "${SALTMASTERBINARY}" = "" ]; then
            LogText "Result: SaltStack (salt-master) is installed (${SALTMASTERBINARY})"
            AUTOMATION_TOOL_FOUND=1
            SALT_MASTER_RUNNING=1
            Report "automation_tool_running[]=saltstack-minion"
            Display --indent 4 --text "Found: SaltStack master (salt-master)" --result "${STATUS_FOUND}" --color GREEN
          else
            IsRunning "salt-master"
            if [ ${RUNNING} -eq 1 ]; then
                LogText "Result: found SaltStack (master)"
                AUTOMATION_TOOL_FOUND=1
                SALT_MASTER_RUNNING=1
                Report "automation_tool_running[]=saltstack-master"
                Display --indent 4 --text "Found: SaltStack (master)" --result "${STATUS_FOUND}" --color GREEN
            fi
        fi

        if [ ${AUTOMATION_TOOL_FOUND} -eq 1 ]; then
            Display --indent 2 --text "- Automation tooling" --result "${STATUS_FOUND}" --color GREEN
          else
            Display --indent 2 --text "- Automation tooling" --result "${STATUS_NOT_FOUND}" --color YELLOW
            ReportSuggestion ${TEST_NO} "Determine if automation tools are present for system management"
        fi
    fi
#
#################################################################################
#
# Intrusion Prevention tools
#
#################################################################################
#
    # Test        : TOOL-5102
    # Description : Check for Fail2ban
    Register --test-no TOOL-5102 --weight L --network NO --description "Check for presence of Fail2ban"
    if [ ${SKIPTEST} -eq 0 ]; then

        # Fail2ban presence
        if [ ! "${FAIL2BANBINARY}" = "" ]; then
            FAIL2BAN_FOUND=1
            IDS_IPS_TOOL_FOUND=1
            LogText "Result: Fail2ban is installed (${FAIL2BANBINARY})"
            Report "ids_ips_tooling[]=fail2ban"
            Display --indent 2 --text "- Checking presence of Fail2ban" --result "${STATUS_FOUND}" --color GREEN
          else
            LogText "Result: Fail2ban not present (fail2ban-server not found)"
        fi

        # Fail2ban configuration
        LogText "Checking Fail2ban configuration file"
        if [ -f /etc/fail2ban/jail.local ]; then
            FAIL2BAN_CONFIG="/etc/fail2ban/jail.local"
        elif [ -f /etc/fail2ban/jail.conf ]; then
            FAIL2BAN_CONFIG="/etc/fail2ban/jail.conf"
        else
            FAIL2BAN_CONFIG=""
        fi

        # Continue if tooling is available and configuration file found
        if [ ${FAIL2BAN_FOUND} -eq 1 -a ! "${FAIL2BAN_CONFIG}" = "" ]; then

            LogText "Result: found configuration file (${FAIL2BAN_CONFIG})"

            # Check email alert configuration
            LogText "Test: checking for email actions within ${FAIL2BAN_CONFIG}"

            FIND=`egrep "^action = \%\(action_m.*\)s" ${FAIL2BAN_CONFIG}`
            FIND2=`egrep "^action = \%\(action_\)s" ${FAIL2BAN_CONFIG}`

            if [ ! "${FIND}" = "" ]; then
                FAIL2BAN_EMAIL=1
                LogText "Result: found at least one jail which sends an email alert"
            fi

            if [ ! "${FIND2}" = "" ]; then
                FAIL2BAN_SILENT=1
                LogText "Result: found at least one jail which does NOT send an email alert"
            fi

            if [ ${FAIL2BAN_SILENT} -eq 0 ] && [ ${FAIL2BAN_EMAIL} -eq 0 ]; then
                LogText "No registered actions found in ${FAIL2BAN_CONFIG}"
                Display --indent 4 --text "- Checking Fail2ban actions" --result "${STATUS_NONE}" --color RED
                ReportWarning "${TEST_NO}" "M" "${FAIL2BAN_CONFIG}" "There are no actions configured for Fail2ban."
                AddHP 0 3
            fi

            if [ ${FAIL2BAN_SILENT} -eq 0 ] && [ ${FAIL2BAN_EMAIL} -eq 1 ]; then
                LogText "All actions in ${FAIL2BAN_CONFIG} are configured to send email alerts"
                Display --indent 4 --text "- Checking Fail2ban actions" --result "${STATUS_OK}" --color GREEN
                AddHP 3 3
            fi

            if [ ${FAIL2BAN_SILENT} -eq 1 ] && [ ${FAIL2BAN_EMAIL} -eq 1 ]; then
                LogText "Some actions found in ${FAIL2BAN_CONFIG} are configured to send email alerts"
                Display --indent 4 --text "- Checking Fail2ban actions" --result PARTIAL --color YELLOW
                ReportSuggestion "${TEST_NO}" "Some Fail2ban jails are configured with non-notified actions.  Consider changing these to emailed alerts."
                AddHP 2 3
            fi

            if [ ${FAIL2BAN_SILENT} -eq 1 ] && [ ${FAIL2BAN_EMAIL} -eq 0 ]; then
                LogText "None of the actions found in ${FAIL2BAN_CONFIG} are configured to send email alerts"
                Display --indent 4 --text "- Checking Fail2ban actions" --result "${STATUS_NONE}" --color YELLOW
                ReportSuggestion "${TEST_NO}" "None of the Fail2ban jails are configured to send email notifications.  Consider changing these to emailed alerts."
                AddHP 1 3
            fi

            # Check at least one enabled jail
            LogText "Checking for enabled jails within ${FAIL2BAN_CONFIG}"

            FIND=`egrep "^enabled\s*=\s*true" ${FAIL2BAN_CONFIG}`
            if [ ! "${FIND}" = "" ]; then
                LogText "Result: found at least one enabled jail"
                Display --indent 4 --text "- Checking Fail2ban jails" --result "${STATUS_ENABLED}" --color GREEN
                AddHP 3 3
              else
                LogText "Result: Fail2ban installed but completely disabled"
                Display --indent 4 --text "- Checking Fail2ban jails" --result "${STATUS_DISABLED}" --color RED
                AddHP 0 3
                ReportWarning "${TEST_NO}" "M" "All jails in Fail2ban are disabled" "${FAIL2BAN_CONFIG}"
            fi

            # Confirm at least one iptables chain for fail2ban

            LogText "Checking for fail2ban iptables chains"

            if [ ! "${IPTABLESBINARY}" = "" ]; then
                CHECK_CHAINS=`${IPTABLESBINARY} -L 2>&1 | grep fail2ban`
                if [ ! "${CHECK_CHAINS}" = "" ]; then
                    LogText "Result: found at least one iptables chain for fail2ban"
                    Display --indent 4 --text "- Checking for Fail2ban iptables chain" --result "${STATUS_OK}" --color GREEN
                  else
                    LogText "Result: Fail2ban installed but iptables chain not present - fail2ban will not work"
                    Display --indent 4 --text "- Checking for Fail2ban iptables chain" --result "${STATUS_WARNING}" --color RED
                    AddHP 0 3
                    ReportSuggestion "${TEST_NO}" "M" "Check config to see why iptables does not have a fail2ban chain" "${FAIL2BAN_CONFIG}"
                fi
            else
                Display --indent 4 --text "- Checking for Fail2ban iptables chain" --result "${STATUS_WARNING}" --color RED
                ReportSuggestion "${TEST_NO}" "H" "iptables doesn't seem to be installed; Fail2ban will not work. Remove Fail2ban or install iptables" "${FAIL2BAN_CONFIG}"
            fi
        fi
    fi
#
#################################################################################
#
    # Test        : TOOL-5190
    # Description : Check for an IDS/IPS tool
    Register --test-no TOOL-5014 --weight L --network NO --description "Check presence of IDS/IPS tool"
    if [ ${SKIPTEST} -eq 0 ]; then

        if [ ${IDS_IPS_TOOL_FOUND} -eq 1 ]; then
            Display --indent 2 --text "- Checking for intrusion detection/prevention system" --result "${STATUS_FOUND}" --color GREEN
            AddHP 2 2
          else
            Display --indent 2 --text "- Checking for intrusion detection/prevention system" --result "${STATUS_NONE}" --color YELLOW
            #ReportSuggestion ${TEST_NO} "Ensure that automatic intrusion detection/prevention tools are installed"
            AddHP 0 2
        fi
    fi
#
#################################################################################
#
# Backup tools
#
#################################################################################
#
    # Netvault
    # Rsync in cron
#
#################################################################################
#
    Report "automation_tool_present=${AUTOMATION_TOOL_FOUND}"


    WaitForKeyPress
#
#================================================================================
# Lynis - Security Auditing and System Hardening for Linux and UNIX - https://cisofy.com