clamav support

Dockerfile

@@ -11,7 +11,7 @@ COPY scripts/ /opt/scripts
 COPY misc/*.mmdb /etc/nginx/geoip.mmdb
 COPY fail2ban/ /opt/fail2ban
 
-RUN apk --no-cache add php7-fpm certbot libstdc++ libmaxminddb geoip pcre yajl fail2ban && \
+RUN apk --no-cache add php7-fpm certbot libstdc++ libmaxminddb geoip pcre yajl fail2ban clamav && \
     chmod +x /opt/entrypoint.sh /opt/scripts/* && \
     mkdir /www && \
     adduser -h /dev/null -g '' -s /sbin/nologin -D -H nginx

confs/modsecurity-clamav.conf

@@ -0,0 +1,2 @@
+SecRule FILES_TMPNAMES "@inspectFile /opt/scripts/clamav.sh" \
+"phase:2,t:none,block,msg:'Virus found in uploaded file',id:'399999'"

confs/modsecurity-rules.conf

@@ -54,6 +54,9 @@ SecAuditLogRelevantStatus "^(?:5|4(?!04))"
 SecAuditLogType Serial
 SecAuditLog /var/log/modsec_audit.log
 
+# scan uploaded files with clamv
+%USE_CLAMAV_UPLOAD%"
+
 # include custom rules
 %MODSECURITY_INCLUDE_CUSTOM_RULES%
 

entrypoint.sh

@@ -2,6 +2,25 @@
 
 echo "[*] Starting bunkerized-nginx ..."
 
+# trap SIGTERM and SIGINT
+function trap_exit() {
+	echo "[*] Catched stop operation"
+	echo "[*] Stopping crond ..."
+	pkill -TERM crond
+	if [ "$USE_PHP" = "yes" ] ; then
+		echo "[*] Stopping php ..."
+		pkill -TERM php-fpm7
+	fi
+	if [ "$USE_FAIL2BAN" = "yes" ] ; then
+		echo "[*] Stopping fail2ban"
+		fail2ban-client stop > /dev/null
+	fi
+	echo "[*] Stopping nginx ..."
+	/usr/sbin/nginx -s stop
+	pkill -TERM tail
+}
+trap "trap_exit" TERM INT
+
 # replace pattern in file
 function replace_in_file() {
 	# escape slashes
@@ -69,6 +88,9 @@ FAIL2BAN_STATUS_CODES="${FAIL2BAN_STATUS_CODES-400|401|403|404|405|444}"
 FAIL2BAN_BANTIME="${FAIL2BAN_BANTIME-3600}"
 FAIL2BAN_FINDTIME="${FAIL2BAN_FINDTIME-60}"
 FAIL2BAN_MAXRETRY="${FAIL2BAN_MAXRETRY-10}"
+USE_CLAMAV_UPLOAD="${USE_CLAMAV_UPLOAD-yes}"
+USE_CLAMAV_SCAN="${USE_CLAMAV_SCAN-yes}"
+CLAMAV_SCAN_REMOVE="${CLAMAV_SCAN_REMOVE-yes}"
 
 # install additional modules if needed
 if [ "$ADDITIONAL_MODULES" != "" ] ; then
@@ -303,6 +325,25 @@ else
 	replace_in_file "/etc/nginx/server.conf" "%USE_FAIL2BAN%" ""
 fi
 
+# clamav setup
+if [ "$USE_CLAMAV_UPLOAD" = "yes" ] || [ "$USE_CLAMAV_SCAN" = "yes" ] ; then
+	echo "[*] Updating clamav ..."
+	freshclam > /dev/null 2>&1
+	echo "0 0 * * * /usr/bin/freshclam > /dev/null 2>&1" >> /etc/crontabs/root
+fi
+if [ "$USE_CLAMAV_UPLOAD" = "yes" ] ; then
+	replace_in_file "/etc/nginx/modsecurity-rules.conf" "%USE_CLAMAV_UPLOAD%" "include /etc/nginx/modsecurity-clamav.conf"
+else
+	replace_in_file "/etc/nginx/modsecurity-rules.conf" "%USE_CLAMAV_UPLOAD%" ""
+fi
+if [ "$USE_CLAMAV_SCAN" = "yes" ] ; then
+	if [ "$USE_CLAMAV_SCAN_REMOVE" = "yes" ] ; then
+		echo "0 */1 * * * /usr/bin/clamscan -r -i --no-summary --remove / >> /var/log/clamav.log 2> /dev/null" >> /etc/crontabs/root
+	else
+		echo "0 */1 * * * /usr/bin/clamscan -r -i --no-summary / >> /var/log/clamav.log 2> /dev/null" >> /etc/crontabs/root
+	fi
+fi
+
 # edit access if needed
 if [ "$WRITE_ACCESS" = "yes" ] ; then
 	chown -R root:nginx /www
@@ -320,16 +361,18 @@ fi
 crond
 
 # start nginx
-/usr/sbin/nginx
 echo "[*] Running nginx ..."
+/usr/sbin/nginx
 
+# start fail2ban
 if [ "$USE_FAIL2BAN" = "yes" ] ; then
-	fail2ban-server
+	fail2ban-server > /dev/null
 fi
 
 # display logs
-exec tail -f /var/log/access.log
+tail -f /var/log/access.log &
+wait $!
 
-# try to gracefully stop nginx
-echo "[*] Stopping nginx ..."
-/usr/sbin/nginx -s stop
+# sigterm trapped
+echo "[*] bunkerized-nginx stopped"
+exit 0

scripts/clamav.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+output=$(clamscan -i --no-summary "$1" 2> /dev/null)
+
+if echo "$output" | grep -q ".* FOUND$" ; then
+	echo "0 clamscan: $output"
+else
+	echo "1 clamscan: ok"
+fi

scripts/exit-nodes.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-BLACKLIST=$(curl "https://iplists.firehol.org/files/tor_exits.ipset")
+BLACKLIST=$(curl -s "https://iplists.firehol.org/files/tor_exits.ipset")
 DATA=""
 for ip in $BLACKLIST ; do
 	DATA="${DATA}deny ${ip};\n"

scripts/user-agents.sh

@@ -9,7 +9,7 @@ function replace_in_file() {
         sed -i "s/$pattern/$replace/g" "$1"
 }
 
-BLACKLIST="$(curl https://raw.githubusercontent.com/mitchellkrogza/nginx-ultimate-bad-bot-blocker/master/_generator_lists/bad-user-agents.list)"
+BLACKLIST="$(curl -s https://raw.githubusercontent.com/mitchellkrogza/nginx-ultimate-bad-bot-blocker/master/_generator_lists/bad-user-agents.list)"
 DATA=""
 IFS=$'\n'
 for ua in $BLACKLIST ; do