mirror of
https://github.com/telekom-security/tpotce.git
synced 2025-04-29 19:58:52 +00:00
38fce345cf
fix condition when no internet connection is available check internet connection before download of rules and avoid errors check internet connection before setting up capture filters (with FQDNs, resulted in endless restart of suricata) and unset capture filters if no internet connection is available
55 lines
1.4 KiB
Bash
Executable file
55 lines
1.4 KiB
Bash
Executable file
#!/bin/ash
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# Let's ensure normal operation on exit or if interrupted ...
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function fuCLEANUP {
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exit 0
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}
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trap fuCLEANUP EXIT
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### Vars
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myOINKCODE="$1"
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function fuDLRULES {
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### Check if args are present then download rules, if not throw error
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if [ "$myOINKCODE" != "" ] && [ "$myOINKCODE" == "OPEN" ];
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then
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echo "Downloading ET open ruleset."
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wget -q --tries=2 --timeout=2 https://rules.emergingthreats.net/open/suricata-4.0/emerging.rules.tar.gz -O /tmp/rules.tar.gz
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else
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if [ "$myOINKCODE" != "" ];
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then
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echo "Downloading ET pro ruleset with Oinkcode $myOINKCODE."
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wget -q --tries=2 --timeout=2 https://rules.emergingthreatspro.com/$myOINKCODE/suricata-4.0/etpro.rules.tar.gz -O /tmp/rules.tar.gz
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else
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echo "Usage: update.sh <[OPEN, OINKCODE]>"
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exit
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fi
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fi
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}
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# Check internet availability
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function fuCHECKINET () {
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mySITES=$1
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error=0
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for i in $mySITES;
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do
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curl --connect-timeout 5 -Is $i 2>&1 > /dev/null
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if [ $? -ne 0 ];
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then
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let error+=1
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fi;
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done;
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echo $error
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}
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# Check for connectivity and download rules
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myCHECK=$(fuCHECKINET "rules.emergingthreatspro.com rules.emergingthreats.net")
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if [ "$myCHECK" == "0" ];
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then
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fuDLRULES 2>&1 > /dev/null
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tar xvfz /tmp/rules.tar.gz -C /etc/suricata/ 2>&1 > /dev/null
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sed -i s/^#alert/alert/ /etc/suricata/rules/*.rules 2>&1 > /dev/null
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echo "/etc/suricata/capture-filter.bpf"
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else
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echo "/etc/suricata/null.bpf"
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fi
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