44 lines
2.4 KiB
Bash
44 lines
2.4 KiB
Bash
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#!/usr/bin/env bash
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# glchat: правила цепочки DOCKER-USER (AGENT.md 10.4).
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# Docker публикует порты в обход UFW, поэтому внутренние порты приложения
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# (127.0.0.1:8080, 127.0.0.1:7880) должны быть недоступны снаружи явно.
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set -euo pipefail
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APP_PORT="${APP_PORT:-8080}"
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LIVEKIT_WS_PORT="${LIVEKIT_WS_PORT:-7880}"
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if ! command -v iptables >/dev/null 2>&1; then
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echo "glchat-docker-user: iptables не найден" >&2
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exit 0
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fi
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if ! iptables -nL DOCKER-USER >/dev/null 2>&1; then
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echo "glchat-docker-user: цепочка DOCKER-USER недоступна (Docker не запущен?)" >&2
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exit 0
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fi
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# Идемпотентность: снимаем только свои правила.
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while iptables -C DOCKER-USER -m comment --comment "glchat-managed" -j RETURN >/dev/null 2>&1; do
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iptables -D DOCKER-USER -m comment --comment "glchat-managed" -j RETURN >/dev/null 2>&1 || break
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done
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while iptables -C DOCKER-USER -p tcp -m multiport --dports "${APP_PORT},${LIVEKIT_WS_PORT}" -m comment --comment "glchat-block-internal" -j DROP >/dev/null 2>&1; do
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iptables -D DOCKER-USER -p tcp -m multiport --dports "${APP_PORT},${LIVEKIT_WS_PORT}" -m comment --comment "glchat-block-internal" -j DROP >/dev/null 2>&1 || break
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done
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docker_subnets="$(docker network inspect bridge --format '{{range .IPAM.Config}}{{.Subnet}} {{end}}' 2>/dev/null || true)"
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[ -n "$docker_subnets" ] || docker_subnets="172.16.0.0/12"
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# Сначала блокируем внутренние порты для всех, затем разрешаем docker-подсети и localhost.
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iptables -I DOCKER-USER 1 -p tcp -m multiport --dports "${APP_PORT},${LIVEKIT_WS_PORT}" \
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-m comment --comment "glchat-block-internal" -j DROP
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for subnet in $docker_subnets; do
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iptables -I DOCKER-USER 1 -s "$subnet" -p tcp -m multiport --dports "${APP_PORT},${LIVEKIT_WS_PORT}" \
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-m comment --comment "glchat-managed" -j RETURN
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done
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iptables -I DOCKER-USER 1 -s 127.0.0.0/8 -p tcp -m multiport --dports "${APP_PORT},${LIVEKIT_WS_PORT}" \
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-m comment --comment "glchat-managed" -j RETURN
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iptables -I DOCKER-USER 1 -i lo -p tcp -m multiport --dports "${APP_PORT},${LIVEKIT_WS_PORT}" \
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-m comment --comment "glchat-managed" -j RETURN
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echo "glchat-docker-user: правила применены (заблокированы ${APP_PORT}, ${LIVEKIT_WS_PORT} снаружи)"
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