owaspctl.sh

#!/bin/bash
LSDIR='/usr/local/lsws'
OWASP_DIR="${LSDIR}/conf/owasp"
RULE_FILE='modsec_includes.conf'
LS_HTTPD_CONF="${LSDIR}/conf/httpd_config.xml"
OLS_HTTPD_CONF="${LSDIR}/conf/httpd_config.conf"
EPACE='        '

echow(){
    FLAG=${1}
    shift
    echo -e "\033[1m${EPACE}${FLAG}\033[0m${@}"
}

help_message(){
    echo -e "\033[1mOPTIONS\033[0m"
    echow '-E, --enable'
    echo "${EPACE}${EPACE}Will Enable mod_secure module with latest OWASP version of rules"
    echow '-D, --disable'
    echo "${EPACE}${EPACE}Will Disable mod_secure module with latest OWASP version of rules" 
    echow '-H, --help'
    echo "${EPACE}${EPACE}Display help and exit."       
    exit 0
}

check_lsv(){
    if [ -f ${LSDIR}/bin/openlitespeed ]; then
        LSV='openlitespeed'
    elif [ -f ${LSDIR}/bin/litespeed ]; then
        LSV='lsws'
    else
        echo 'Version not exist, abort!'
        exit 1     
    fi
}

check_input(){
    if [ -z "${1}" ]; then
        help_message
        exit 1
    fi
}

mk_owasp_dir(){
    if [ -d ${OWASP_DIR} ] ; then
        rm -rf ${OWASP_DIR}
    fi
    mkdir -p ${OWASP_DIR}
    if [ ${?} -ne 0 ] ; then
        echo "Unable to create directory: ${OWASP_DIR}, exit!"
        exit 1
    fi
}

fst_match_line(){
    FIRST_LINE_NUM=$(grep -n -m 1 "${1}" ${2} | awk -F ':' '{print $1}')
}
fst_match_after(){
    FIRST_NUM_AFTER=$(tail -n +${1} ${2} | grep -n -m 1 ${3} | awk -F ':' '{print $1}')
}
lst_match_line(){
    fst_match_after ${1} ${2} ${3}
    LAST_LINE_NUM=$((${FIRST_LINE_NUM}+${FIRST_NUM_AFTER}-1))
}

enable_ols_modsec(){
    grep 'module mod_security {' ${OLS_HTTPD_CONF} >/dev/null 2>&1
    if [ ${?} -eq 0 ] ; then
        echo "Already configured for modsecurity."
    else
        echo 'Enable modsecurity'
        sed -i "s=module cache=module mod_security {\nmodsecurity  on\
        \nmodsecurity_rules \`\nSecRuleEngine On\n\`\nmodsecurity_rules_file \
        ${OWASP_DIR}/${RULE_FILE}\n  ls_enabled              1\n}\
        \n\nmodule cache=" ${OLS_HTTPD_CONF}
    fi    
}

enable_ls_modsec(){
    grep '<enableCensorship>1</enableCensorship>' ${LS_HTTPD_CONF} >/dev/null 2>&1
    if [ ${?} -eq 0 ] ; then
        echo "LSWS already configured for modsecurity"
    else
        echo 'Enable modsecurity'
        sed -i \
        "s=<enableCensorship>0</enableCensorship>=<enableCensorship>1</enableCensorship>=" ${LS_HTTPD_CONF}
        sed -i \
        "s=</censorshipControl>=</censorshipControl>\n\
        <censorshipRuleSet>\n\
        <name>ModSec</name>\n\
        <enabled>1</enabled>\n\
        <ruleSet>include ${OWASP_DIR}/modsec_includes.conf</ruleSet>\n\
        </censorshipRuleSet>=" ${LS_HTTPD_CONF}
    fi
}

enable_modsec(){
    if [ "${LSV}" = 'lsws' ]; then
        enable_ls_modsec
    elif [ "${LSV}" = 'openlitespeed' ]; then
        enable_ols_modsec
    fi
}

disable_ols_modesec(){
    grep 'module mod_security {' ${OLS_HTTPD_CONF} >/dev/null 2>&1
    if [ ${?} -eq 0 ] ; then
        echo 'Disable modsecurity'
        fst_match_line 'module mod_security' ${OLS_HTTPD_CONF}
        lst_match_line ${FIRST_LINE_NUM} ${OLS_HTTPD_CONF} '}'
        sed -i "${FIRST_LINE_NUM},${LAST_LINE_NUM}d" ${OLS_HTTPD_CONF}
    else
        echo 'Already disabled for modsecurity'
    fi    
}

disable_ls_modesec(){
    grep '<enableCensorship>0</enableCensorship>' ${LS_HTTPD_CONF}
    if [ ${?} -eq 0 ] ; then
        echo 'Already disabled for modsecurity'
    else
        echo 'Disable modsecurity'
        sed -i \
        "s=<enableCensorship>1</enableCensorship>=<enableCensorship>0</enableCensorship>=" ${LS_HTTPD_CONF}
        fst_match_line 'censorshipRuleSet' ${LS_HTTPD_CONF}
        lst_match_line ${FIRST_LINE_NUM} ${LS_HTTPD_CONF} '/censorshipRuleSet'
        sed -i "${FIRST_LINE_NUM},${LAST_LINE_NUM}d" ${LS_HTTPD_CONF}
    fi    
}

disable_modsec(){
    check_lsv
    if [ "${LSV}" = 'lsws' ]; then
        disable_ls_modesec
    elif [ "${LSV}" = 'openlitespeed' ]; then
        disable_ols_modesec
    fi
}

install_git(){
    if [ ! -f /usr/bin/git ]; then
        echo 'Install git'
        apt-get install git -y >/dev/null 2>&1
    fi
}

install_owasp(){
    cd ${OWASP_DIR}
    echo 'Download OWASP rules'
    git clone https://github.com/SpiderLabs/owasp-modsecurity-crs.git >/dev/null 2>&1
}

configure_owasp(){
    echo 'Config OWASP rules.'
    cd ${OWASP_DIR}
    echo "include modsecurity.conf
include owasp-modsecurity-crs/crs-setup.conf
include owasp-modsecurity-crs/rules/REQUEST-900-EXCLUSION-RULES-BEFORE-CRS.conf
include owasp-modsecurity-crs/rules/REQUEST-901-INITIALIZATION.conf
include owasp-modsecurity-crs/rules/REQUEST-903.9001-DRUPAL-EXCLUSION-RULES.conf
include owasp-modsecurity-crs/rules/REQUEST-903.9002-WORDPRESS-EXCLUSION-RULES.conf
include owasp-modsecurity-crs/rules/REQUEST-903.9003-NEXTCLOUD-EXCLUSION-RULES.conf
include owasp-modsecurity-crs/rules/REQUEST-903.9004-DOKUWIKI-EXCLUSION-RULES.conf
include owasp-modsecurity-crs/rules/REQUEST-903.9005-CPANEL-EXCLUSION-RULES.conf
include owasp-modsecurity-crs/rules/REQUEST-903.9006-XENFORO-EXCLUSION-RULES.conf
include owasp-modsecurity-crs/rules/REQUEST-905-COMMON-EXCEPTIONS.conf
include owasp-modsecurity-crs/rules/REQUEST-910-IP-REPUTATION.conf
include owasp-modsecurity-crs/rules/REQUEST-911-METHOD-ENFORCEMENT.conf
include owasp-modsecurity-crs/rules/REQUEST-912-DOS-PROTECTION.conf
include owasp-modsecurity-crs/rules/REQUEST-913-SCANNER-DETECTION.conf
include owasp-modsecurity-crs/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf
include owasp-modsecurity-crs/rules/REQUEST-921-PROTOCOL-ATTACK.conf
include owasp-modsecurity-crs/rules/REQUEST-930-APPLICATION-ATTACK-LFI.conf
include owasp-modsecurity-crs/rules/REQUEST-931-APPLICATION-ATTACK-RFI.conf
include owasp-modsecurity-crs/rules/REQUEST-932-APPLICATION-ATTACK-RCE.conf
include owasp-modsecurity-crs/rules/REQUEST-933-APPLICATION-ATTACK-PHP.conf
include owasp-modsecurity-crs/rules/REQUEST-934-APPLICATION-ATTACK-NODEJS.conf
include owasp-modsecurity-crs/rules/REQUEST-941-APPLICATION-ATTACK-XSS.conf
include owasp-modsecurity-crs/rules/REQUEST-942-APPLICATION-ATTACK-SQLI.conf
include owasp-modsecurity-crs/rules/REQUEST-943-APPLICATION-ATTACK-SESSION-FIXATION.conf
include owasp-modsecurity-crs/rules/REQUEST-944-APPLICATION-ATTACK-JAVA.conf
include owasp-modsecurity-crs/rules/REQUEST-949-BLOCKING-EVALUATION.conf
include owasp-modsecurity-crs/rules/RESPONSE-950-DATA-LEAKAGES.conf
include owasp-modsecurity-crs/rules/RESPONSE-951-DATA-LEAKAGES-SQL.conf
include owasp-modsecurity-crs/rules/RESPONSE-952-DATA-LEAKAGES-JAVA.conf
include owasp-modsecurity-crs/rules/RESPONSE-953-DATA-LEAKAGES-PHP.conf
include owasp-modsecurity-crs/rules/RESPONSE-954-DATA-LEAKAGES-IIS.conf
include owasp-modsecurity-crs/rules/RESPONSE-959-BLOCKING-EVALUATION.conf
include owasp-modsecurity-crs/rules/RESPONSE-980-CORRELATION.conf
include owasp-modsecurity-crs/rules/RESPONSE-999-EXCLUSION-RULES-AFTER-CRS.conf">modsec_includes.conf
    echo "SecRuleEngine On">modsecurity.conf
    cd ${OWASP_DIR}/owasp-modsecurity-crs
    if [ -f crs-setup.conf.example ]; then
        mv crs-setup.conf.example crs-setup.conf
    fi    
    cd ${OWASP_DIR}/owasp-modsecurity-crs/rules
    if [ -f REQUEST-900-EXCLUSION-RULES-BEFORE-CRS.conf.example ]; then
        mv REQUEST-900-EXCLUSION-RULES-BEFORE-CRS.conf.example REQUEST-900-EXCLUSION-RULES-BEFORE-CRS.conf
    fi
    if [ -f RESPONSE-999-EXCLUSION-RULES-AFTER-CRS.conf.example ]; then
        mv RESPONSE-999-EXCLUSION-RULES-AFTER-CRS.conf.example RESPONSE-999-EXCLUSION-RULES-AFTER-CRS.conf
    fi
}

main_owasp(){
    mk_owasp_dir
    install_git
    install_owasp
    configure_owasp
    check_lsv
    enable_modsec    
}

check_input ${1}
while [ ! -z "${1}" ]; do
    case ${1} in
        -[hH] | -help | --help)
            help_message
            ;;
        -[eE] | -enable | --enable)
            main_owasp
            ;;
        -[dD] | -disable | --disable)
            disable_modsec
            ;;          
        *) 
            help_message
            ;;
    esac
    shift
done