add gost-ctl
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174
pkgs/g/gost-ctl/gost-ctl
Executable file
174
pkgs/g/gost-ctl/gost-ctl
Executable file
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#!/bin/bash
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# gost-ctl — manage the GOST proxy tunnel and container network attachments
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#
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# Usage: gost-ctl <command> [args]
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#
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# Commands:
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# start Start gost-tunnel service and watcher
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# stop Stop gost-tunnel service and watcher
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# restart Restart gost-tunnel service
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# attach <name> <ip> Attach a container to the bridge (idempotent)
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# detach <name> Detach a container from the bridge
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# status Show tunnel, bridge, and container status
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#
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# Config resolution (first match wins):
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# $GOST_TUNNEL_CONFIG env var → /etc/gost-tunnel/env → .env in script dir
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set -e
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# ─── Config ─────────────────────────────────────────────────────────────────
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CONFIG_FILE="${GOST_TUNNEL_CONFIG:-/etc/gost-tunnel/env}"
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if [ ! -f "$CONFIG_FILE" ]; then
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CONFIG_FILE="$(dirname "$(realpath "$0")")/.env"
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fi
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if [ ! -f "$CONFIG_FILE" ]; then
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echo "ERROR: config not found. Set GOST_TUNNEL_CONFIG or place .env next to gost-ctl"
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exit 1
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fi
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# shellcheck source=/dev/null
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source "$CONFIG_FILE"
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# ─── Helpers ────────────────────────────────────────────────────────────────
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log() { echo "[$(date '+%H:%M:%S')] $*"; }
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require_root() {
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[ "$(id -u)" -eq 0 ] || { echo "ERROR: gost-ctl must be run as root"; exit 1; }
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}
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# ─── Commands ───────────────────────────────────────────────────────────────
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cmd_start() {
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systemctl start gost-tunnel gost-tunnel-watcher
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log "gost-tunnel started"
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}
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cmd_stop() {
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systemctl stop gost-tunnel-watcher gost-tunnel
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log "gost-tunnel stopped"
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}
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cmd_restart() {
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systemctl restart gost-tunnel
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log "gost-tunnel restarted"
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}
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cmd_attach() {
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require_root
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local cname="$1" cip="$2"
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[ -n "$cname" ] && [ -n "$cip" ] \
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|| { echo "Usage: gost-ctl attach <name> <ip>"; exit 1; }
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local veth_h="veth-${cname}-h" veth_c="veth-${cname}-c"
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# Idempotency: skip if already attached
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if ip link show "$veth_h" >/dev/null 2>&1; then
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log "$cname already attached (veth exists), skipping."
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return 0
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fi
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# Wait for container PID
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local pid
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for i in $(seq 1 30); do
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pid=$(docker inspect -f '{{.State.Pid}}' "$cname" 2>/dev/null)
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[[ "$pid" =~ ^[0-9]+$ ]] && [ "$pid" -gt 0 ] && break
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log "Waiting for $cname PID... ($i/30)"; sleep 1
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done
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[[ "$pid" =~ ^[0-9]+$ ]] && [ "$pid" -gt 0 ] \
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|| { log "ERROR: $cname PID not found"; docker logs "$cname"; exit 1; }
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log "$cname PID: $pid"
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mkdir -p /var/run/netns
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ln -sfT "/proc/$pid/ns/net" "/var/run/netns/$cname"
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ip link add "$veth_h" type veth peer name "$veth_c"
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ip link set "$veth_h" master "$BRIDGE_NAME"
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ip link set "$veth_h" up
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ip link set "$veth_c" netns "$cname"
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ip netns exec "$cname" ip link set "$veth_c" name eth0
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ip netns exec "$cname" ip link set lo up
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ip netns exec "$cname" ip link set eth0 up
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ip netns exec "$cname" ip addr add "${cip}/24" dev eth0
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ip netns exec "$cname" ip route add default via "$BRIDGE_IP"
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log "$cname attached at $cip via $BRIDGE_IP"
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}
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cmd_detach() {
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require_root
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local cname="$1"
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[ -n "$cname" ] || { echo "Usage: gost-ctl detach <name>"; exit 1; }
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local veth_h="veth-${cname}-h"
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if ip link del "$veth_h" 2>/dev/null; then
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log "$cname veth removed"
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else
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log "$cname veth not found (already detached?)"
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fi
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rm -f "/var/run/netns/$cname"
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log "$cname detached"
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}
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cmd_status() {
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echo ""
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local svc_state watcher_state
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svc_state=$(systemctl is-active gost-tunnel 2>/dev/null || echo "inactive")
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watcher_state=$(systemctl is-active gost-tunnel-watcher 2>/dev/null || echo "inactive")
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echo "Service: $svc_state"
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echo "Watcher: $watcher_state"
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if ip link show "$TUN_NAME" >/dev/null 2>&1; then
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local tun_addr
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tun_addr=$(ip -4 addr show "$TUN_NAME" | awk '/inet /{print $2}' | head -1)
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echo "TUN: $TUN_NAME UP ${tun_addr:-<no addr>}"
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else
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echo "TUN: $TUN_NAME DOWN"
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fi
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if ip link show "$BRIDGE_NAME" >/dev/null 2>&1; then
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local br_addr
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br_addr=$(ip -4 addr show "$BRIDGE_NAME" | awk '/inet /{print $2}' | head -1)
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echo "Bridge: $BRIDGE_NAME UP ${br_addr:-<no addr>}"
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else
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echo "Bridge: $BRIDGE_NAME DOWN"
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fi
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echo ""
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echo "Attached containers:"
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local found=0
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for veth in $(ip link show 2>/dev/null | grep -oP 'veth-\S+-h' | sort -u); do
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local cname="${veth#veth-}"; cname="${cname%-h}"
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local cip
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cip=$(ip netns exec "$cname" ip -4 addr show eth0 2>/dev/null \
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| awk '/inet /{print $2}' | head -1 || echo "<unknown>")
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local link_state
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link_state=$(ip link show "$veth" 2>/dev/null | grep -oP '(?<=state )\S+' | head -1)
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printf " %-16s %-18s %s\n" "$cname" "$cip" "$veth ${link_state:-?}"
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found=1
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done
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[ "$found" -eq 0 ] && echo " (none)"
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echo ""
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}
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# ─── Dispatch ───────────────────────────────────────────────────────────────
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case "${1:-}" in
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start) cmd_start ;;
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stop) cmd_stop ;;
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restart) cmd_restart ;;
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attach) shift; cmd_attach "$@" ;;
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detach) shift; cmd_detach "$@" ;;
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status) cmd_status ;;
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*)
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echo "Usage: gost-ctl <command> [args]"
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echo ""
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echo "Commands:"
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echo " start Start gost-tunnel service and watcher"
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echo " stop Stop gost-tunnel service and watcher"
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echo " restart Restart gost-tunnel service"
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echo " attach <name> <ip> Attach container to bridge"
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echo " detach <name> Detach container from bridge"
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echo " status Show tunnel and container status"
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exit 1
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;;
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esac
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28
pkgs/g/gost-ctl/package.nix
Normal file
28
pkgs/g/gost-ctl/package.nix
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@ -0,0 +1,28 @@
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# xbuild.nix
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{
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lib,
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stdenv,
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pkgs,
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...
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}:
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let
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gost-ctl=stdenv.mkDerivation {
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pname = "gost-ctl";
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version = "0.0.1";
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src = ./.;
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nativeBuildInputs = [
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pkgs.gost
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];
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installPhase = ''
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mkdir -p $out/bin
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cp gost-ctl $out/bin
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chmod +x $out/bin/gost-ctl
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'';
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};
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in
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gost-ctl
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