ANSI/MC-Farbcodes strippen, robustes Schreiben der Playerliste

mc-ntfy-notify.v1.sh

@@ -4,9 +4,9 @@
 # Autor:        Patrick Asmus
 # Web:          https://www.cleveradmin.de
 # Repository:   https://git.techniverse.net/scriptos/minecraft-ntfy-notify
-# Version:      1.0
+# Version:      1.1
 # Datum:        18.09.2025
-# Modifikation: Initial
+# Modifikation: ANSI/MC-Farbcodes strippen, robustes Schreiben der Playerliste
 #####################################################
 set -euo pipefail
 
@@ -42,9 +42,13 @@ STATE_DIR="${STATE_DIR:-${SCRIPT_DIR}/state}"
 STATE_PLAYERS="${STATE_DIR}/players.prev"
 STATE_UP="${STATE_DIR}/server_up.prev"
 
+# Optional Debug
+DEBUG="${DEBUG:-false}"
+
 # ===== Helpers =====
 die() { echo "ERROR: $*" >&2; exit 1; }
 need_bin() { command -v "$1" >/dev/null 2>&1 || die "Benötigtes Tool fehlt: $1"; }
+dbg() { [[ "$DEBUG" == "true" ]] && echo "DBG: $*" >&2 || true; }
 
 ntfy_notify() {
   local title="$1" body="$2" tags="$3" priority="$4"
@@ -63,19 +67,46 @@ ensure_state() {
   [[ -f "$STATE_UP" ]] || echo "unknown" >"$STATE_UP"
 }
 
+# Strippt ANSI-Escape-Sequenzen, MC-Farbcodes (§x), CR und Steuerzeichen
+sanitize() {
+  # stdin -> stdout
+  sed -E $'s/\x1B\\[[0-9;]*[A-Za-z]//g' \
+  | sed -E 's/§[0-9A-FK-ORa-fk-or]//g' \
+  | tr -d '\r' \
+  | sed -E 's/[\x00-\x1F\x7F]//g'
+}
+
 get_players() {
   local out
   if ! out=$(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
+  dbg "RAW: $out"
-    local names="${out#*:}"
+
-    names="$(echo "$names" | sed 's/^ *//;s/ *$//')"
+  # Normalisieren & Farbcodes raus
-    if [[ -n "$names" ]]; then
+  out="$(printf '%s' "$out" | sanitize)"
-      tr ',' '\n' <<<"$names" | sed 's/^ *//;s/ *$//' | sed '/^$/d' | sort -u
+
-      return 0
+  # Erwartete Muster:
-    fi
+  # "There are 0 of a max of 20 players online"
+  # "There are 2 of a max of 20 players online: Alice, Bob"
+  if ! grep -q "players online:" <<<"$out"; then
+    # Kein Spieler gelistet, aber kein Fehler
+    return 0
   fi
+
+  local names="${out#*:}"
+  names="$(echo "$names" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')"
+  if [[ -z "$names" ]]; then
+    return 0
+  fi
+
+  # Namen splitten, trimmen, doppelte raus, sortiert liefern
+  printf '%s\n' "$names" \
+    | tr ',' '\n' \
+    | sed 's/^[[:space:]]*//;s/[[:space:]]*$//' \
+    | sed '/^$/d' \
+    | LC_ALL=C sort -u
+
   return 0
 }
 
@@ -90,9 +121,8 @@ prev_up="$(cat "$STATE_UP")"
 
 while :; do
   tmp_players="$(mktemp)"
-  if players=$(get_players); then
+  if get_players >"$tmp_players"; then
     server_up="true"
-    printf "%s\n" $players 2>/dev/null | sed '/^$/d' | sort -u >"$tmp_players"
   else
     server_up="false"
     : >"$tmp_players"
@@ -111,7 +141,8 @@ while :; do
   fi
 
   if [[ "$server_up" == "true" ]]; then
-    sort -u "$STATE_PLAYERS" -o "$STATE_PLAYERS"
+    LC_ALL=C sort -u "$STATE_PLAYERS" -o "$STATE_PLAYERS"
+
     joined="$(comm -13 "$STATE_PLAYERS" "$tmp_players" || true)"
     left="$(comm -23 "$STATE_PLAYERS" "$tmp_players" || true)"
 
@@ -140,4 +171,4 @@ while :; do
   echo -n "$server_up" >"$STATE_UP"
   prev_up="$server_up"
   sleep "$POLL_SECONDS"
-done
+done