Initial

2025-09-18 21:53:53 +02:00 · 2025-09-18 21:53:53 +02:00 · 122b2b3ef7
commit 122b2b3ef7
parent 205d9a458c
2 changed files with 165 additions and 0 deletions
--- a/.env
+++ b/.env
@ -0,0 +1,22 @@
+# Minecraft RCON
+export MC_HOST="mc.techniverse.net"
+export RCON_PORT="25575"
+export RCON_PASSWORD=""
+
+# Polling
+export POLL_SECONDS="10"
+export ANNOUNCE_SERVER_UPDOWN="true"
+
+# ntfy
+export NTFY_SERVER="https://ntfy.pushservice.techniverse.net"
+export NTFY_TOPIC="mc-events"
+export NTFY_TOKEN=""
+export NTFY_TITLE_PREFIX="Minecraft"
+export NTFY_TAGS_BASE="minecraft"
+export NTFY_MARKDOWN="false"
+
+# Optional: Prioritäten (1=hoch, 5=niedrig; ntfy: 5=lowest, 1=urgent)
+export NTFY_PRIORITY_JOIN="3"
+export NTFY_PRIORITY_LEAVE="3"
+export NTFY_PRIORITY_UP="4"
+export NTFY_PRIORITY_DOWN="5"
--- a/mc-ntfy-notify.v1.sh
+++ b/mc-ntfy-notify.v1.sh
@ -0,0 +1,143 @@
+#!/usr/bin/env bash
+#!/bin/bash
+# Beschreibung: Minecraft → ntfy Notifier (Join/Leave + optional Up/Down)
+# Autor:        Patrick Asmus
+# Web:          https://www.cleveradmin.de
+# Repository:   https://git.techniverse.net/scriptos/minecraft-ntfy-notify
+# Version:      1.0
+# Datum:        18.09.2025
+# Modifikation: Initial
+#####################################################
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+if [[ -f "${SCRIPT_DIR}/.env" ]]; then
+  set -a
+  . "${SCRIPT_DIR}/.env"
+  set +a
+fi
+
+# ===== Konfiguration via ENV =====
+MC_HOST="${MC_HOST:-127.0.0.1}"
+RCON_PORT="${RCON_PORT:-25575}"
+RCON_PASSWORD="${RCON_PASSWORD:-changeme}"
+
+POLL_SECONDS="${POLL_SECONDS:-10}"
+ANNOUNCE_SERVER_UPDOWN="${ANNOUNCE_SERVER_UPDOWN:-true}"
+
+# ntfy
+NTFY_SERVER="${NTFY_SERVER:-}"
+NTFY_TOPIC="${NTFY_TOPIC:-}"
+NTFY_TOKEN="${NTFY_TOKEN:-}"
+NTFY_TITLE_PREFIX="${NTFY_TITLE_PREFIX:-Minecraft}"
+NTFY_TAGS_BASE="${NTFY_TAGS_BASE:-minecraft}"
+NTFY_PRIORITY_JOIN="${NTFY_PRIORITY_JOIN:-3}"
+NTFY_PRIORITY_LEAVE="${NTFY_PRIORITY_LEAVE:-3}"
+NTFY_PRIORITY_UP="${NTFY_PRIORITY_UP:-4}"
+NTFY_PRIORITY_DOWN="${NTFY_PRIORITY_DOWN:-5}"
+NTFY_MARKDOWN="${NTFY_MARKDOWN:-false}"
+
+# State (standardmäßig im Script-Ordner, root-frei)
+STATE_DIR="${STATE_DIR:-${SCRIPT_DIR}/state}"
+STATE_PLAYERS="${STATE_DIR}/players.prev"
+STATE_UP="${STATE_DIR}/server_up.prev"
+
+# ===== Helpers =====
+die() { echo "ERROR: $*" >&2; exit 1; }
+need_bin() { command -v "$1" >/dev/null 2>&1 || die "Benötigtes Tool fehlt: $1"; }
+
+ntfy_notify() {
+  local title="$1" body="$2" tags="$3" priority="$4"
+  [[ -z "$NTFY_SERVER" || -z "$NTFY_TOPIC" ]] && { echo "ntfy Server/Topic fehlt – skip"; return 1; }
+  local url="${NTFY_SERVER%/}/${NTFY_TOPIC}"
+  local args=(-sS -X POST "$url" -H "Title: ${title}" -H "Priority: ${priority}" -H "Tags: ${tags}")
+  [[ "$NTFY_MARKDOWN" == "true" ]] && args+=(-H "Markdown: yes")
+  [[ -n "$NTFY_TOKEN" ]] && args+=(-H "Authorization: Bearer ${NTFY_TOKEN}")
+  curl "${args[@]}" --data-raw "$body" >/dev/null 2>&1 || return 1
+  return 0
+}
+
+ensure_state() {
+  mkdir -p "$STATE_DIR"
+  touch "$STATE_PLAYERS"
+  [[ -f "$STATE_UP" ]] || echo "unknown" >"$STATE_UP"
+}
+
+get_players() {
+  local out
+  if ! out=$(mcrcon -H "$MC_HOST" -P "$RCON_PORT" -p "$RCON_PASSWORD" "list" 2>/dev/null); then
+    return 1
+  fi
+  if grep -q "players online:" <<<"$out"; then
+    local names="${out#*:}"
+    names="$(echo "$names" | sed 's/^ *//;s/ *$//')"
+    if [[ -n "$names" ]]; then
+      tr ',' '\n' <<<"$names" | sed 's/^ *//;s/ *$//' | sed '/^$/d' | sort -u
+      return 0
+    fi
+  fi
+  return 0
+}
+
+# ===== Checks =====
+need_bin curl
+need_bin mcrcon
+[[ -n "${NTFY_SERVER}" && -n "${NTFY_TOPIC}" ]] || die "NTFY_SERVER/NTFY_TOPIC nicht gesetzt"
+ensure_state
+
+echo "Starte Polling ${MC_HOST}:${RCON_PORT} → ntfy ${NTFY_SERVER}/${NTFY_TOPIC}"
+prev_up="$(cat "$STATE_UP")"
+
+while :; do
+  tmp_players="$(mktemp)"
+  if players=$(get_players); then
+    server_up="true"
+    printf "%s\n" $players 2>/dev/null | sed '/^$/d' | sort -u >"$tmp_players"
+  else
+    server_up="false"
+    : >"$tmp_players"
+  fi
+
+  if [[ "$ANNOUNCE_SERVER_UPDOWN" == "true" && "$prev_up" != "unknown" && "$server_up" != "$prev_up" ]]; then
+    if [[ "$server_up" == "true" ]]; then
+      ntfy_notify "${NTFY_TITLE_PREFIX}: Server up" \
+                  "Server ist wieder erreichbar (${MC_HOST}:${RCON_PORT})." \
+                  "${NTFY_TAGS_BASE},up" "$NTFY_PRIORITY_UP" || true
+    else
+      ntfy_notify "${NTFY_TITLE_PREFIX}: Server down" \
+                  "Server ist nicht erreichbar (${MC_HOST}:${RCON_PORT})." \
+                  "${NTFY_TAGS_BASE},down" "$NTFY_PRIORITY_DOWN" || true
+    fi
+  fi
+
+  if [[ "$server_up" == "true" ]]; then
+    sort -u "$STATE_PLAYERS" -o "$STATE_PLAYERS"
+    joined="$(comm -13 "$STATE_PLAYERS" "$tmp_players" || true)"
+    left="$(comm -23 "$STATE_PLAYERS" "$tmp_players" || true)"
+
+    if [[ -n "$joined" ]]; then
+      while IFS= read -r name; do
+        [[ -z "$name" ]] && continue
+        ntfy_notify "${NTFY_TITLE_PREFIX}: Join" \
+                    "Player ${name} ist beigetreten." \
+                    "${NTFY_TAGS_BASE},join" "$NTFY_PRIORITY_JOIN" || true
+      done <<<"$joined"
+    fi
+    if [[ -n "$left" ]]; then
+      while IFS= read -r name; do
+        [[ -z "$name" ]] && continue
+        ntfy_notify "${NTFY_TITLE_PREFIX}: Leave" \
+                    "Player ${name} hat den Server verlassen." \
+                    "${NTFY_TAGS_BASE},leave" "$NTFY_PRIORITY_LEAVE" || true
+      done <<<"$left"
+    fi
+
+    mv "$tmp_players" "$STATE_PLAYERS"
+  else
+    rm -f "$tmp_players"
+  fi
+
+  echo -n "$server_up" >"$STATE_UP"
+  prev_up="$server_up"
+  sleep "$POLL_SECONDS"
+done