Release 2024-02-22

CHANGELOG.md

@@ -2,6 +2,11 @@
 
 [Back to main](README.md#changelog)
 
+## 2024-02-22
+
+- Added RCON-Based player detection, for join and leave messages on console, rcon-broadcast and webhooks (#216)
+  - Important change: RCON is now on by default, was false in the Dockerfile before, not considered a breaking change
+
 ## 2024-02-21
 
 - Fixed major CVEs and added re-compiled gosu-amd64 binary to the repository (#214 #215)

Dockerfile

@@ -69,6 +69,10 @@ ENV DEBIAN_FRONTEND=noninteractive \
     # Restart-settings
     RESTART_ENABLED=false \
     RESTART_CRON_EXPRESSION="0 18 * * *" \
+    # RCON-Playerdection - NEEDS RCON ENABLED!
+    RCON_PLAYER_DETECTION=true \
+    RCON_PLAYER_DETECTION_STARTUP_DELAY=60 \
+    RCON_PLAYER_DETECTION_CHECK_INTERVAL=15 \
     # Webhook-settings
     WEBHOOK_ENABLED=false \
     WEBHOOK_DEBUG_ENABLED=false \
@@ -156,7 +160,7 @@ ENV DEBIAN_FRONTEND=noninteractive \
     SERVER_PASSWORD=serverPasswordHere \
     PUBLIC_PORT=8211 \
     PUBLIC_IP= \
-    RCON_ENABLED=false \
+    RCON_ENABLED=true \
     RCON_PORT=25575 \
     REGION= \
     USEAUTH=true \

default.env

@@ -13,6 +13,10 @@ BACKUP_RETENTION_AMOUNT_TO_KEEP=72
 # Restart-settings
 RESTART_ENABLED=false
 RESTART_CRON_EXPRESSION="0 18 * * *"
+# RCON-Playerdection - NEEDS RCON ENABLED!
+RCON_PLAYER_DETECTION=true
+RCON_PLAYER_DETECTION_STARTUP_DELAY=60
+RCON_PLAYER_DETECTION_CHECK_INTERVAL=15
 # Webhook-settings
 WEBHOOK_ENABLED=false
 WEBHOOK_DEBUG_ENABLED=false

includes/playerdetection.sh

@@ -0,0 +1,70 @@
+# shellcheck disable=SC2148,SC1091
+
+source /includes/colors.sh
+source /includes/rcon.sh
+source /includes/webhook.sh
+
+player_detection_loop() {
+    sleep "$RCON_PLAYER_DETECTION_STARTUP_DELAY"
+    while true; do
+        compare_players
+        sleep "$RCON_PLAYER_DETECTION_CHECK_INTERVAL"
+    done 
+}
+
+ # Function to compare current and previous player lists
+compare_players() {
+    local old_players=("${current_players[@]}")
+    readarray -t current_players < <(rcon showplayers | tail -n +2 | awk -F ',' '{print $1}')
+
+    for player in "${current_players[@]}"; do
+        local found=false
+        for old_player in "${old_players[@]}"; do
+            if [ "$old_player" = "$player" ]; then
+                found=true
+                break
+            fi
+        done
+        if ! $found; then
+            announce_join "$player"
+        fi
+    done
+    for player in "${old_players[@]}"; do
+        local found=false
+        for current_player in "${current_players[@]}"; do
+            if [ "$current_player" = "$player" ]; then
+                found=true
+                break
+            fi
+        done
+        if ! $found; then
+            announce_leave "$player"
+        fi
+    done
+}
+
+# Function to announce a player join
+announce_join() {
+    time=$(date '+%H:%M:%S')
+    message="Player $1 has joined the server."
+    echo "${time}: $message"
+    if [[ -n $WEBHOOK_ENABLED ]] && [[ $WEBHOOK_ENABLED == "true" ]]; then
+        send_player_join_notification "$message"
+    fi
+    if [[ -n $RCON_ENABLED ]] && [[ $RCON_ENABLED == "true" ]]; then
+       broadcast_player_join "$1"
+    fi
+}
+
+# Function to announce a player leave
+announce_leave() {
+    time=$(date '+%H:%M:%S')
+    message="Player $1 has left the server."
+    echo "${time}: $message"
+    if [[ -n $WEBHOOK_ENABLED ]] && [[ $WEBHOOK_ENABLED == "true" ]]; then
+        send_player_leave_notification "$message"
+    fi
+    if [[ -n $RCON_ENABLED ]] && [[ $RCON_ENABLED == "true" ]]; then
+       broadcast_player_leave "$1"
+    fi
+}

includes/rcon.sh

@@ -38,4 +38,14 @@ function broadcast_backup_success() {
 
 function broadcast_backup_failed() {
     rconcli 'broadcast Backup-failed'
+}
+
+function broadcast_player_join() {
+    time=$(date '+%H:%M:%S')
+    rconcli "broadcast ${time}-Player-$1-has-joined-the-server"
+}
+
+function broadcast_player_leave() {
+    time=$(date '+%H:%M:%S')
+    rconcli "broadcast ${time}-Player-$1-has-left-the-server"
 }

includes/webhook.sh

@@ -46,3 +46,9 @@ send_stop_notification() {
 send_update_notification() {
   send_webhook_notification "$WEBHOOK_UPDATE_TITLE" "$WEBHOOK_UPDATE_DESCRIPTION" "$WEBHOOK_UPDATE_COLOR"
 }
+send_player_join_notification() {
+  send_webhook_notification "$WEBHOOK_INFO_TITLE" "$1" "$WEBHOOK_INFO_COLOR"
+}
+send_player_leave_notification() {
+  send_webhook_notification "$WEBHOOK_INFO_TITLE" "$1" "$WEBHOOK_INFO_COLOR"
+}

scripts/servermanager.sh

@@ -9,6 +9,7 @@ set -e
 source /includes/colors.sh
 source /includes/config.sh
 source /includes/cron.sh
+source /includes/playerdetection.sh
 source /includes/security.sh
 source /includes/server.sh
 source /includes/webhook.sh
@@ -43,6 +44,10 @@ do
     e "> Started at: $current_date $current_time"
     start_main &
 
+    if [[ -n $RCON_PLAYER_DETECTION ]] && [[ $RCON_PLAYER_DETECTION == "true" ]] && [[ -n $RCON_ENABLED ]] && [[ $RCON_ENABLED == "true" ]]; then
+       player_detection_loop &
+    fi
+
     killpid="$!"
     e "> Server main thread started with pid ${killpid}"
     wait ${killpid}