96 lines
2.8 KiB
Bash
Executable File
96 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
|
|
set -euo pipefail
|
|
|
|
[[ 0 -eq "$#" ]] && set -- start
|
|
|
|
ufw_docker_agent=ufw-docker-agent
|
|
ufw_docker_agent_image="${ufw_docker_agent_image:-chaifeng/${ufw_docker_agent}:181003}"
|
|
|
|
function ufw-update-rule-for-instance() {
|
|
name="$1"
|
|
port="$2"
|
|
|
|
declare -a opts
|
|
[[ "$port" = deny ]] && opts+=(delete)
|
|
opts+=(allow)
|
|
|
|
[[ "$port" = @(all|deny) ]] && port=""
|
|
|
|
run-ufw-docker "${opts[@]}" "${name}" "$port"
|
|
}
|
|
function ufw-update-service-instances() {
|
|
id="$1"
|
|
port="$2"
|
|
|
|
docker ps -qf "label=com.docker.swarm.service.id=${id}" |
|
|
while read name; do
|
|
echo "$id $name $port"
|
|
ufw-update-rule-for-instance "${name}" "$port"
|
|
done
|
|
}
|
|
|
|
function update-ufw-rules() {
|
|
declare -p | sed -e '/^declare -x ufw_public_/!d' \
|
|
-e 's/^declare -x ufw_public_//' \
|
|
-e 's/="/ /' \
|
|
-e 's/"$//' |
|
|
while read id port; do
|
|
echo "${id}=$port"
|
|
ufw-update-service-instances "${id}" "${port}"
|
|
done
|
|
}
|
|
|
|
function run-ufw-docker() {
|
|
declare -a docker_opts=(run --rm -t --name ufw-docker-agent-"${RANDOM}"-$(date '+%Y%m%d%H%M%S')
|
|
--cap-add NET_ADMIN --network host
|
|
--env UFW_DOCKER_FORCE_ADD=yes
|
|
-v /var/run/docker.sock:/var/run/docker.sock
|
|
-v /etc/ufw:/etc/ufw "${ufw_docker_agent_image}" "$@")
|
|
docker "${docker_opts[@]}"
|
|
}
|
|
|
|
function get-service-name-of() {
|
|
docker inspect "$1" --format '{{range $k,$v:=.Config.Labels}}{{ if eq $k "com.docker.swarm.service.name" }}{{$v}}{{end}}{{end}}' | grep -E "^.+\$"
|
|
}
|
|
|
|
function get-service-id-of() {
|
|
docker inspect "$1" --format '{{range $k,$v:=.Config.Labels}}{{ if eq $k "com.docker.swarm.service.id" }}{{$v}}{{end}}{{end}}' | grep -E "^.+\$"
|
|
}
|
|
|
|
case "$1" in
|
|
start)
|
|
update-ufw-rules
|
|
docker events --format '{{.Time}} {{.Status}} {{.Actor.Attributes.name}}' --filter 'scope=local' --filter 'type=container' |
|
|
while read time status name; do
|
|
echo "$time $status $name" >&2
|
|
[[ -z "$name" ]] && continue
|
|
|
|
[[ "$status" = @(kill|start) ]] || continue
|
|
|
|
declare -n env_name="ufw_public_$(get-service-id-of "$name")"
|
|
[[ -z "${env_name:-}" ]] && continue
|
|
|
|
port="${env_name:-deny}"
|
|
if [[ "$status" = kill ]]; then
|
|
port=deny
|
|
fi
|
|
|
|
ufw-update-rule-for-instance "$name" "$port"
|
|
done
|
|
sleep 60; exit 1
|
|
;;
|
|
delete|allow)
|
|
ufw-docker "$@"
|
|
;;
|
|
update-ufw-rules)
|
|
update-ufw-rules
|
|
;;
|
|
*)
|
|
if [[ -f "$1" ]]; then
|
|
exec "$@"
|
|
else
|
|
echo "Unknown parameters: $@" >&2
|
|
exit 1
|
|
fi
|
|
esac
|