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6 Commits
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557f9b2948
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747bf0c059
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1feac5e60d
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ad482533fa
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79352ec046
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3100810052
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13
Dockerfile
13
Dockerfile
@@ -1,27 +1,27 @@
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ARG IPTABLES_MODE=nft
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#install iptables
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FROM ubuntu:noble AS iptables
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FROM ubuntu:noble AS apt
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RUN --mount=type=cache,target=/var/lib/apt/lists,sharing=locked --mount=type=cache,target=/var/cache/apt,sharing=locked <<EOF
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apt update
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apt upgrade -y
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apt install iptables -y
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apt install iptables jq -y
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EOF
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#set alternative to use iptables-legacy
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FROM iptables AS iptables-legacy
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FROM apt AS iptables-legacy
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RUN update-alternatives --set iptables /usr/sbin/iptables-legacy
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RUN update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy
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#set alternative to use iptables-nft
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FROM iptables AS iptables-nft
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FROM apt AS iptables-nft
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RUN update-alternatives --set iptables /usr/sbin/iptables-nft
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RUN update-alternatives --set ip6tables /usr/sbin/ip6tables-nft
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#build crowdsec-custom-bouncer
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FROM golang:1.21.4 AS build-stage
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FROM golang:1.24 AS build-stage
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WORKDIR /app
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RUN git clone --depth 1 https://github.com/crowdsecurity/cs-custom-bouncer.git
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RUN git clone https://github.com/crowdsecurity/cs-custom-bouncer.git
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WORKDIR /app/cs-custom-bouncer
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RUN CGO_ENABLED=0 GOOS=linux make release
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@@ -33,6 +33,7 @@ COPY --from=build-stage /app/cs-custom-bouncer/crowdsec-custom-bouncer \
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/usr/bin/crowdsec-custom-bouncer
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COPY --from=build-stage /app/cs-custom-bouncer/config/crowdsec-custom-bouncer.yaml \
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/crowdsec-custom-bouncer.yaml
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RUN sed -i "s/total_retries: .*/total_retries: 1/g" /crowdsec-custom-bouncer.yaml
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ADD --chmod=770 bouncer.sh /bouncer.sh
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ENV BINARY_PATH=/bouncer.sh
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LABEL me.ar2000.gitea.buildargs.iptablesmode="${IPTABLES_MODE}"
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108
bouncer.sh
108
bouncer.sh
@@ -2,51 +2,85 @@
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#
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# Script to add /remove IPs to iptables
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[[ -n "${IPTABLES_COMMENT}" ]] && comment="-m comment --comment \"$4\"" || comment=""
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: ${IPTABLES_CHAIN:=INPUT}
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set -euo pipefail
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function iptableAdd () {
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if [[ -z "${IPTABLES_INSERT}" ]]; then
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iptables $comment -A $IPTABLES_CHAIN -s "$1" -j DROP
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main() (
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while read -r line; do
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# echo processAction "$(echo "$line" | jq -r '.action')" \
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# "$(echo "$line" | jq -r .value)" \
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# "$(echo "$line" | jq -r .duration)" \
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# "$(echo "$line" | jq -r .scenario)" |
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# tee bouncer.sh.out
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processAction "$(echo "$line" | jq -r .action)" \
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"$(echo "$line" | jq -r .value)" \
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"$(echo "$line" | jq -r .duration)" \
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"$(echo "$line" | jq -r .scenario)"
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done
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#{"duration":"-1h1m9s","origin":"CAPI","scenario":"crowdsecurity/ssh-bf","scope":"Ip","type":"ban","value":"122.117.32.192","id":22739513,"action":"del"}
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)
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else
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iptables $comment -I $IPTABLES_CHAIN "$IPTABLES_INSERT" -s "$1" -j DROP
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fi
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}
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: "${IPTABLES_CHAIN:=INPUT}"
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function iptableDel () {
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iptables $comment -D $IPTABLES_CHAIN -s "$1" -j DROP
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}
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function processAction() {
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function ip6tableAdd () {
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if [[ -z "${IPTABLES_INSERT}" ]]; then
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ip6tables $comment -A $IPTABLES_CHAIN -s "$1" -j DROP
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else
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ip6tables $comment -I $IPTABLES_CHAIN "$IPTABLES_INSERT" -s "$1" -j DROP
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fi
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}
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if [[ -n "${IPTABLES_COMMENT}" ]]; then
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comment="-m comment --comment \"$4\""
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else
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comment=""
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fi
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function ip6tableDel () {
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ip6tables $comment -D $IPTABLES_CHAIN -s "$1" -j DROP
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}
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#determine action
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if [ "$1" = "add" ]; then #add
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#determine action
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if [ "$1" = "add" ]; then #add
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if [[ "$2" =~ .*[.].* ]]; then #ipv4
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echo "add $2 for $3 with $4"
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iptableAdd "$2"
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echo "add $2 for $3 with $4"
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iptablesAdd "$2"
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elif [[ "$2" =~ .*[:].* ]]; then #ipv6
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echo "IPV6 : add $2 for $3 with $4"
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ip6tableAdd "$2"
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echo "IPV6 : add $2 for $3 with $4"
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ip6tableAdd "$2"
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fi
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elif [ "$1" = "del" ]; then #del
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elif [ "$1" = "del" ]; then #del
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if [[ "$2" =~ .*[.].* ]]; then #ipv4
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echo "del $2 for $3 with $4"
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iptableDel "$2"
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echo "del $2 for $3 with $4"
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iptablesDel "$2"
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elif [[ "$2" =~ .*[:].* ]]; then #ipv6
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echo "IPV6 : add $2 for $3 with $4"
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ip6tableDel "$2"
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echo "IPV6 : add $2 for $3 with $4"
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ip6tableDel "$2"
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fi
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else
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echo "unknown action"
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fi
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else
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echo "unknown action"
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fi
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}
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function iptablesAdd() (
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#check if the rule already exist
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if ! iptables "$comment" -C "$IPTABLES_CHAIN" -s "$1" -j DROP; then
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#do we insert at a $IPTABLES_INSERT position or append to the chain
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if [[ -z "${IPTABLES_INSERT}" ]]; then
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iptables "$comment" -A "$IPTABLES_CHAIN" -s "$1" -j DROP
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else
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iptables "$comment" -I "$IPTABLES_CHAIN" "$IPTABLES_INSERT" -s "$1" -j DROP
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fi
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fi
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)
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function ip6tableAdd() (
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#check if the rule already exist
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if ! ip6tables "$comment" -C "$IPTABLES_CHAIN" -s "$1" -j DROP; then
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#do we insert at a $IPTABLES_INSERT position or append to the chain
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if [[ -z "${IPTABLES_INSERT}" ]]; then
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ip6tables "$comment" -A "$IPTABLES_CHAIN" -s "$1" -j DROP
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else
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ip6tables "$comment" -I "$IPTABLES_CHAIN" "$IPTABLES_INSERT" -s "$1" -j DROP
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fi
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fi
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)
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function iptablesDel() (
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iptables "$comment" -D "$IPTABLES_CHAIN" -s "$1" -j DROP
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)
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function ip6tableDel() (
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ip6tables "$comment" -D "$IPTABLES_CHAIN" -s "$1" -j DROP
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)
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main "$@"
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7
publish-dev.sh
Executable file
7
publish-dev.sh
Executable file
@@ -0,0 +1,7 @@
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#!/bin/bash
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docker image tag gitea.ar2000.me/ar2000/crowdsec-legacy-firewall-bouncer:legacy gitea.ar2000.me/ar2000/crowdsec-legacy-firewall-bouncer:legacy-dev
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docker image tag gitea.ar2000.me/ar2000/crowdsec-legacy-firewall-bouncer:nft gitea.ar2000.me/ar2000/crowdsec-legacy-firewall-bouncer:nft-dev
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docker image tag gitea.ar2000.me/ar2000/crowdsec-legacy-firewall-bouncer:latest gitea.ar2000.me/ar2000/crowdsec-legacy-firewall-bouncer:dev
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docker push gitea.ar2000.me/ar2000/crowdsec-legacy-firewall-bouncer:nft-dev
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docker push gitea.ar2000.me/ar2000/crowdsec-legacy-firewall-bouncer:legacy-dev
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docker push gitea.ar2000.me/ar2000/crowdsec-legacy-firewall-bouncer:dev
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