crowdsec-firewall-bouncer: initial package v0.0.15

/net/crowdsec-firewall-bouncer/

crowdsec-firewall-bouncer will fetch new and old decisions from
 a CrowdSec API to add them in a blocklist used by supported firewalls.

Signed-off-by: Kerma Gérald <gandalf@gk2.net>

net/crowdsec-firewall-bouncer/Makefile

@@ -0,0 +1,117 @@
+# SPDX-License-Identifier: MIT
+#
+# Copyright (C) 2021 Gerald Kerma
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=crowdsec-firewall-bouncer
+PKG_VERSION:=0.0.15
+PKG_RELEASE:=$(AUTORELEASE)
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://github.com/crowdsecurity/cs-firewall-bouncer
+PKG_SOURCE_VERSION:=v$(PKG_VERSION)
+PKG_SOURCE_DATE:=2021903
+PKG_MIRROR_HASH:=2ef7e4f935056d648a6b45bb09ebb5846262ac9d745229b1442051abdd214c86
+
+PKG_LICENSE:=MIT
+PKG_LICENSE_FILES:=LICENSE
+PKG_MAINTAINER:=Gerald Kerma <gandalf@gk2.net>
+
+PKG_BUILD_DEPENDS:=golang/host
+PKG_BUILD_PARALLEL:=1
+PKG_USE_MIPS16:=0
+
+CSFB_BUILD_VERSION?=$(PKG_SOURCE_VERSION)
+CSFB_BUILD_GOVERSION=$(shell go version | cut -d " " -f3 | sed -r 's/[go]+//g')
+CWD_BUILD_TIMESTAMP:=$(SOURCE_DATE_EPOCH)
+CSFB_BUILD_TAG=openwrt
+
+CSFB_VERSION_PKG:=github.com/crowdsecurity/cs-firewall-bouncer/pkg/version
+
+GO_PKG:=github.com/crowdsecurity/cs-firewall-bouncer
+
+GO_PKG_LDFLAGS_X:=$(CSFB_VERSION_PKG).Version=$(CSFB_BUILD_VERSION) \
+	$(CSFB_VERSION_PKG).BuildDate=$(CSFB_BUILD_TIMESTAMP) \
+	$(CSFB_VERSION_PKG).Tag=$(CSFB_BUILD_TAG) \
+	$(CSFB_VERSION_PKG).GoVersion=$(CSFB_BUILD_GOVERSION)
+
+GO_PKG_INSTALL_ALL:=1
+
+include $(INCLUDE_DIR)/package.mk
+include ../../lang/golang/golang-package.mk
+
+define Package/crowdsec-firewall-bouncer/Default
+  SECTION:=net
+  CATEGORY:=Network
+  TITLE:=Firewall bouncer for Crowdsec
+  URL:=https://github.com/crowdsecurity/cs-firewall-bouncer/
+endef
+
+define Package/crowdsec-firewall-bouncer
+$(call Package/crowdsec-firewall-bouncer/Default)
+  DEPENDS:=@(PACKAGE_iptables||PACKAGE_nftables) \
+	$(GO_ARCH_DEPENDS) \
+	+crowdsec
+endef
+
+define Package/golang-crowdsec-firewall-bouncer-dev
+$(call Package/crowdsec-firewall-bouncer/Default)
+$(call GoPackage/GoSubMenu)
+  TITLE+= (source files)
+  DEPENDS:=$(GO_ARCH_DEPENDS)
+  PKGARCH:=all
+endef
+
+define Package/crowdsec-firewall-bouncer/Default/description
+  Crowdsec bouncer written in golang for firewalls.
+
+  crowdsec-firewall-bouncer will fetch new and old decisions
+  from a CrowdSec API to add them in a blocklist used by supported firewalls.
+
+  You must install iptables+ipset or nftables.
+endef
+
+define Package/crowdsec-firewall-bouncer/description
+$(call Package/crowdsec-firewall-bouncer/Default/description)
+
+  This package contains the main program.
+endef
+
+define Package/golang-crowdsec-firewall-bouncer-dev/description
+$(call Package/crowdsec-firewall-bouncer/Default/description)
+
+  This package provides the source files for the program.
+endef
+
+define Package/crowdsec-firewall-bouncer/install
+	$(call GoPackage/Package/Install/Bin,$(1))
+
+	$(INSTALL_DIR) $(1)/etc/crowdsec/bouncers
+	$(INSTALL_DATA) \
+		$(GO_PKG_BUILD_DIR)/src/$(GO_PKG)/config/crowdsec-firewall-bouncer.yaml \
+		$(1)/etc/crowdsec/bouncers
+
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) \
+		./files/crowdsec-firewall-bouncer.initd \
+		$(1)/etc/init.d/crowdsec-firewall-bouncer
+
+	$(INSTALL_DIR) $(1)/etc
+	$(INSTALL_BIN) \
+		./files/crowdsec-firewall-bouncer.firewall \
+		$(1)/etc/firewall.cs
+
+	$(INSTALL_DIR) $(1)/etc/uci-defaults
+	$(INSTALL_BIN) \
+		./files/crowdsec-firewall-bouncer.defaults \
+		$(1)/etc/uci-defaults/99_crowdsec-firewall-bouncer
+endef
+
+define Package/crowdsec-firewall-bouncer/conffiles
+/etc/crowdsec/bouncers/crowdsec-firewall-bouncer.yaml
+endef
+
+$(eval $(call GoBinPackage,crowdsec-firewall-bouncer))
+$(eval $(call BuildPackage,crowdsec-firewall-bouncer))

net/crowdsec-firewall-bouncer/files/crowdsec-firewall-bouncer.defaults

@@ -0,0 +1,23 @@
+#!/bin/sh
+API_KEY=""
+CONFIG=/etc/crowdsec/bouncers/crowdsec-firewall-bouncer.yaml
+## Gen&ConfigApiKey
+if grep -q "${API_KEY}" "$CONFIG"; then
+	echo API key already registered...
+else
+	SUFFIX=`tr -dc A-Za-z0-9 </dev/urandom | head -c 8`
+	API_KEY=`/usr/bin/cscli bouncers add cs-firewall-bouncer-${SUFFIX} -o raw`
+	sed -i "s,^\(\s*api_key\s*:\s*\).*\$,\1$API_KEY," $CONFIG
+fi
+
+# unfortunately, UCI doesn't provide a nice way to add an anonymous section only if it doesn't already exist
+if ! uci show firewall | grep -q firewall.cs; then
+  name="$(uci add firewall include)"
+  uci set "firewall.${name}.path=/etc/firewall.cs"
+  uci set "firewall.${name}.enabled=1"
+  uci set "firewall.${name}.reload=1"
+  echo -e "Adding the following UCI config:\n $(uci changes)"
+  uci commit
+fi
+
+exit 0

net/crowdsec-firewall-bouncer/files/crowdsec-firewall-bouncer.firewall

@@ -0,0 +1,4 @@
+#!/bin/sh
+/etc/init.d/crowdsec enabled && /etc/init.d/crowdsec restart
+/etc/init.d/crowdsec-firewall-bouncer enabled && /etc/init.d/crowdsec-firewall-bouncer restart
+exit 0

net/crowdsec-firewall-bouncer/files/crowdsec-firewall-bouncer.initd

@@ -0,0 +1,69 @@
+#!/bin/sh /etc/rc.common
+# (C) 2021 Gerald Kerma
+
+START=99
+USE_PROCD=1
+NAME=crowdsec-firewall-bouncer
+PROG=/usr/bin/cs-firewall-bouncer
+CONFIG=/etc/crowdsec/bouncers/crowdsec-firewall-bouncer.yaml
+BACKEND=iptables
+VARCONFIGDIR=/var/etc/crowdsec/bouncers
+VARCONFIG=/var/etc/crowdsec/bouncers/crowdsec-firewall-bouncer.yaml
+FW_BACKEND="iptables"
+
+service_triggers() {
+	procd_add_reload_trigger crowdsec-firewall-bouncer
+}
+
+init_config() {
+	## CheckFirewall
+	iptables="true"
+	which iptables > /dev/null
+	FW_BACKEND=""
+	if [[ $? != 0 ]]; then
+	  echo "iptables is not present"
+	  iptables="false"
+	else
+	  FW_BACKEND="iptables"
+	  echo "iptables found"
+	fi
+
+	nftables="true"
+	which nft > /dev/null
+	if [[ $? != 0 ]]; then
+	  echo "nftables is not present"
+	  nftables="false"
+	else
+	  FW_BACKEND="nftables"
+	  echo "nftables found"
+	fi
+
+	if [ "$nftables" = "true" -a "$iptables" = "true" ]; then
+	  echo "Found nftables(default) and iptables..."
+	fi
+
+	if [ "$FW_BACKEND" = "iptables" ]; then
+	  which ipset > /dev/null
+	  if [[ $? != 0 ]]; then
+	    echo "ipset not found, install it !"
+	  fi
+	fi
+	BACKEND=$FW_BACKEND
+
+	# Create tmp dir & permissions if needed
+	if [ ! -d "${VARCONFIGDIR}" ]; then
+		mkdir -m 0755 -p "${VARCONFIGDIR}"
+	fi;
+
+	cp $CONFIG $VARCONFIG
+
+	sed -i "s,^\(\s*mode\s*:\s*\).*\$,\1$BACKEND," $VARCONFIG
+}
+
+start_service() {
+	init_config
+
+	procd_open_instance
+	procd_set_param command "$PROG" -c "$VARCONFIG"
+	procd_close_instance
+}

net/crowdsec-firewall-bouncer/patches/001-fix_config_iptables_chains.patch

@@ -0,0 +1,9 @@
+--- a/config/crowdsec-firewall-bouncer.yaml
++++ b/config/crowdsec-firewall-bouncer.yaml
+@@ -15,5 +15,5 @@ deny_log: false
+ #if present, insert rule in those chains
+ iptables_chains:
+   - INPUT
+-#  - FORWARD
++  - FORWARD
+ #  - DOCKER-USER