Auto-merging via docker-versions-create

See #1192 for an in-depth explanation of the problem.

Reported-by: Erik "Coding-Kiwi"

.github/release.yml

@@ -0,0 +1,4 @@
+changelog:
+  exclude:
+    authors:
+      - dependabot

.github/workflows/build-multiarch.yml

@@ -68,7 +68,7 @@ jobs:
           load: true
           push: false
           cache-from: type=gha
-          cache-to: type=gha,mode=max
+          # no cache-to to avoid cross-cache update from next build step
 
       - name: Run tests
         # It is assumed that image variants are merged from master and tested there
@@ -81,7 +81,7 @@ jobs:
         uses: docker/build-push-action@v2.7.0
         with:
           context: .
-          platforms: linux/amd64,linux/arm/v7,linux/arm64
+          platforms: linux/amd64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           # ensure latest base image is used

.github/workflows/stale-check.yml

@@ -12,7 +12,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Process Stale Issues
-        uses: actions/stale@v4.0.0
+        uses: actions/stale@v4.1.0
         with:
           stale-issue-label: status/stale
           stale-pr-label: status/stale

Dockerfile

@@ -1,4 +1,4 @@
-FROM eclipse-temurin:17-jdk
+FROM adoptopenjdk:16-jdk-openj9
 
 LABEL org.opencontainers.image.authors="Geoff Bourne <itzgeoff@gmail.com>"
 
@@ -26,7 +26,7 @@ RUN apt-get update \
 RUN addgroup --gid 1000 minecraft \
   && adduser --system --shell /bin/false --uid 1000 --ingroup minecraft --home /data minecraft
 
-COPY files/sudoers* /etc/sudoers.d
+COPY --chmod=644 files/sudoers* /etc/sudoers.d
 
 EXPOSE 25565 25575
 
@@ -60,7 +60,7 @@ RUN easy-add --var os=${TARGETOS} --var arch=${TARGETARCH}${TARGETVARIANT} \
  --var version=0.1.1 --var app=maven-metadata-release --file {{.app}} \
  --from https://github.com/itzg/{{.app}}/releases/download/{{.version}}/{{.app}}_{{.version}}_{{.os}}_{{.arch}}.tar.gz
 
-ARG MC_HELPER_VERSION=1.9.10
+ARG MC_HELPER_VERSION=1.11.0
 ARG MC_HELPER_BASE_URL=https://github.com/itzg/mc-image-helper/releases/download/v${MC_HELPER_VERSION}
 RUN curl -fsSL ${MC_HELPER_BASE_URL}/mc-image-helper-${MC_HELPER_VERSION}.tgz \
     | tar -C /usr/share -zxf - \
@@ -76,17 +76,18 @@ ENV UID=1000 GID=1000 \
   TYPE=VANILLA VERSION=LATEST \
   ENABLE_RCON=true RCON_PORT=25575 RCON_PASSWORD=minecraft \
   ENABLE_AUTOPAUSE=false AUTOPAUSE_TIMEOUT_EST=3600 AUTOPAUSE_TIMEOUT_KN=120 AUTOPAUSE_TIMEOUT_INIT=600 \
-  AUTOPAUSE_PERIOD=10 AUTOPAUSE_KNOCK_INTERFACE=eth0
+  AUTOPAUSE_PERIOD=10 AUTOPAUSE_KNOCK_INTERFACE=eth0 \
+  ENABLE_AUTOSTOP=false AUTOSTOP_TIMEOUT_EST=3600 AUTOSTOP_TIMEOUT_INIT=1800 AUTOSTOP_PERIOD=10
 
-COPY scripts/start* /
-COPY bin/ /usr/local/bin/
-COPY bin/mc-health /health.sh
-COPY files/server.properties /tmp/server.properties
-COPY files/log4j2.xml /tmp/log4j2.xml
-COPY files/autopause /autopause
+COPY --chmod=755 scripts/start* /
+COPY --chmod=755 bin/ /usr/local/bin/
+COPY --chmod=755 bin/mc-health /health.sh
+COPY --chmod=644 files/server.properties /tmp/server.properties
+COPY --chmod=644 files/log4j2.xml /tmp/log4j2.xml
+COPY --chmod=755 files/autopause /autopause
+COPY --chmod=755 files/autostop /autostop
 
-RUN dos2unix /start* && chmod +x /start* \
-    && dos2unix /autopause/* && chmod +x /autopause/*.sh
+RUN dos2unix /start* /autopause/* /autostop/*
 
 ENTRYPOINT [ "/start" ]
 HEALTHCHECK --start-period=1m CMD mc-health

README.md

@@ -73,6 +73,7 @@ By default, the container will download the latest version of the "vanilla" [Min
       * [Downloadable world](#downloadable-world)
       * [Cloning world from a container path](#cloning-world-from-a-container-path)
       * [Overwrite world on start](#overwrite-world-on-start)
+      * [Datapacks](#datapacks)
    * [Server configuration](#server-configuration)
       * [Message of the Day](#message-of-the-day)
       * [Difficulty](#difficulty)
@@ -131,10 +132,11 @@ By default, the container will download the latest version of the "vanilla" [Min
    * [Autopause](#autopause)
       * [Description](#description)
       * [Enabling Autopause](#enabling-autopause)
+   * [Autostop](#autostop)
    * [Running on RaspberryPi](#running-on-raspberrypi)
    * [Contributing](#contributing)
 
-<!-- Added by: runner, at: Tue Dec  7 03:43:47 UTC 2021 -->
+<!-- Added by: runner, at: Wed Dec 22 13:01:43 UTC 2021 -->
 
 <!--te-->
 
@@ -275,7 +277,7 @@ When using the image `itzg:/minecraft-server` without a tag, the `latest` image
 
 | Tag name       | Java version | Linux  | JVM Type | Architecture      |
 | -------------- | -------------|--------|----------|-------------------|
-| latest         | 17           | Debian | Hotspot  | amd64,arm64,armv7 |
+| latest         | 16           | Debian | Hotspot  | amd64,arm64,armv7 |
 | java8          | 8            | Alpine | Hotspot  | amd64             |
 | java8-multiarch | 8           | Debian | Hotspot  | amd64,arm64,armv7 |
 | java8-openj9   | 8            | Debian | OpenJ9   | amd64             |
@@ -452,19 +454,13 @@ Plugins can either be managed within the `plugins` subdirectory of the [data dir
 
 Enable Paper server mode by adding a `-e TYPE=PAPER` to your command-line.
 
-By default the container will run the latest build of [Paper server](https://papermc.io/downloads)
-but you can also choose to run a specific build with `-e PAPERBUILD=205`.
+By default, the container will run the latest build of [Paper server](https://papermc.io/downloads) but you can also choose to run a specific build with `-e PAPERBUILD=205`.
 
     docker run -d -v /path/on/host:/data \
         -e TYPE=PAPER \
         -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server
 
-If you are hosting your own copy of Paper you can override the download URL with:
-
-- -e PAPER_DOWNLOAD_URL=<url>
-
-An example compose file is provided at
-[examples/docker-compose-paper.yml](examples/docker-compose-paper.yml).
+If you are hosting your own copy of Paper you can override the download URL with `PAPER_DOWNLOAD_URL=<url>`.
 
 If you have attached a host directory to the `/data` volume, then you can install plugins via the `plugins` subdirectory. You can also [attach a `/plugins` volume](#optional-plugins-mods-and-config-attach-points). If you add plugins while the container is running, you'll need to restart it to pick those up.
 
@@ -476,7 +472,7 @@ An [Airplane](https://airplane.gg) server, which is "a stable, optimized, well s
 
     -e TYPE=AIRPLANE
 
-> NOTE: The `VERSION` variable is used to select an Airplane branch to download from. The available options are "LATEST" "1.17" "1.16" "PURPUR" and "PURPUR-1.16"
+> NOTE: The `VERSION` variable is used to select an Airplane branch to download from. The available options are "LATEST" "1.17" and "PURPUR"
 
 Extra variables:
 - `AIRPLANE_BUILD=lastSuccessfulBuild` : set a specific Airplane build to use
@@ -798,6 +794,16 @@ The following diagram shows how this option can be used in a compose deployment
 ### Overwrite world on start
 The world will only be downloaded or copied if it doesn't exist already. Set `FORCE_WORLD_COPY=TRUE` to force overwrite the world on every server start.
 
+### Datapacks
+Datapacks can be installed in a similar manner to mods/plugins. There are many environment variables which function in the same way they do for [mods](#working-with-mods-and-plugins): 
+* `DATAPACKS`
+* `DATAPACKS_FILE` 
+* `REMOVE_OLD_DATAPACKS` 
+* `REMOVE_OLD_DATAPACKS_DEPTH` 
+* `REMOVE_OLD_DATAPACKS_INCLUDE`
+* `REMOVE_OLD_DATAPACKS_EXCLUDE`
+Datapacks will be placed in `/data/$LEVEL/datapacks`
+
 ## Server configuration
 
 By default, the server configuration will be created and set based on the following environment variables, but only the first time the server is started. If the `server.properties` file already exists, the values in them will not be changed.
@@ -846,30 +852,35 @@ values.
 
 > **NOTE** it is very important to set this with servers exposed to the internet where you want only limited players to join.
 
-To whitelist players for your Minecraft server, pass the Minecraft usernames separated by commas via the `WHITELIST` environment variable, such as
+To whitelist players for your Minecraft server, you can:
+- Provide the url or path to a whitelist file via `WHITELIST_FILE` environment variable  
+    `docker run -d -e WHITELIST_FILE=/extra/whitelist.json ...`
+- Provide a list of usernames and/or UUIDs separated by commas via the `WHITELIST` environment variable  
+    `docker run -d -e WHITELIST=user1,uuid2 ...`
 
-    docker run -d -e WHITELIST=user1,user2 ...
+To enforce the whitelist and auto-kick players not included in whitelist configuration, set `ENFORCE_WHITELIST=TRUE`. **By default** any user can join your Minecraft server if it's publicly accessible, regardless of your whitelist configuration.
 
-or 
+If whitelist configuration already exists, `WHITELIST_FILE` will not be retrieved and any usernames in `WHITELIST` are **added** to the whitelist configuration. You can enforce regeneration of the whitelist on each server startup by setting `OVERRIDE_WHITELIST` to "true". This will delete the whitelist file before processing whitelist configuration.
 
-    docker run -d -e WHITELIST=uuid1,uuid2 ...
+> NOTE: You can provide both `WHITELIST_FILE` and `WHITELIST`, which are processed in that order.
 
-If the `WHITELIST` environment variable is not used, any user can join your Minecraft server if it's publicly accessible.
+> NOTE: UUIDs passed via `WHITELIST` need to be the dashed variant, otherwise it not be recognised and instead added as a username.
 
-> NOTE: When using uuids in the whitelist, please make sure it is the dashed variant otherwise it will not parse correctly.
+> If running Minecraft 1.7.5 or earlier, these variables will apply to `white-list.txt`, with 1.7.6 implementing support for `whitelist.json`. Make sure your `WHITELIST_FILE` is in the appropriate format.
 
-> NOTE: When `WHITELIST` is used the server properties `white-list` and `whitelist` will automatically get set to `true`.
+If either `WHITELIST_FILE` or `WHITELIST` is provided, the server property `white-list` is automatically set to `true`, enabline whitelist functionality. Alternatively you can set `ENABLE_WHITELIST=TRUE` to only set the server property `white-list` without modifying the whitelist file. In this case the whitelist can be managed using the `whitelist add` and `whitelist remove` commands. Remember you can set enforcement via the `ENFORCE_WHITELIST` variable.
 
-> By default, the players in `WHITELIST` are **added** to the final `whitelist.json` file by the Minecraft server. If you set `OVERRIDE_WHITELIST` to "true" then the `whitelist.json` file will be recreated on each server startup.
-
-Alternatively, you can set `ENABLE_WHITELIST=true` to only set the server properties `white-list` and `whitelist` without modifying the whitelist file. In this case the whitelist is solely managed using the `whitelist add` and `whitelist remove` commands.
 ### Op/Administrator Players
 
-To add more "op" (aka adminstrator) users to your Minecraft server, pass the Minecraft usernames separated by commas via the `OPS` environment variable, such as
+Similar to the whitelist, to add users as operators (aka adminstrators) to your Minecraft server, you can:
+- Provide te url or path to an ops file via `OPS_FILE` environment variable  
+    `docker run -d -e OPS_FILE=https://config.example.com/extra/ops.json ...`
+- Provide a list of usernames and/or UUIDs separated by commas via the `OPS` environment variable  
+    `docker run -d -e OPS=user1,uuid2 ...`
 
-    docker run -d -e OPS=user1,user2 ...
+If ops configuration already exists, `OPS_FILE` will not be retrieved and any usernames in `OPS` are **added** to the ops configuration. You can enforce regeneration of the ops configuration on each server startup by setting `OVERRIDE_OPS` to "true". This will delete the ops file before processing ops configuration.
 
-> By default, the players in `OPS` are **added** to the final `ops.json` file by the Minecraft server. If you set `OVERRIDE_OPS` to "true" then the `ops.json` file will be recreated on each server startup.
+> Similar to whitelists, you can provide both `OPS_FILE` and `OPS`, and Minecraft 1.7.5 or earlier will use `ops.txt` rather than `ops.json`.
 
 ### Server icon
 
@@ -1327,6 +1338,8 @@ If you would like to `docker attach` to the Minecraft server console with color
 > This will bypass graceful server shutdown handling when using `docker stop`, so be sure the server console's `stop` command.
 > 
 > Make to enable stdin and tty with `-it` when using `docker run` or `stdin_open: true` and `tty: true` when using docker compose.
+>
+> This feature is incompatible with Autopause and cannot be set when `ENABLE_AUTOPAUSE=true`.
 
 ### Server Shutdown Options
 
@@ -1444,6 +1457,8 @@ Enable the Autopause functionality by setting:
 -e ENABLE_AUTOPAUSE=TRUE
 ```
 
+Autopause is not compatible with `EXEC_DIRECTLY=true` and the two cannot be set together.
+
 The following environment variables define the behaviour of auto-pausing:
 * `AUTOPAUSE_TIMEOUT_EST`, default `3600` (seconds)
   describes the time between the last client disconnect and the pausing of the process (read as timeout established)
@@ -1456,6 +1471,28 @@ The following environment variables define the behaviour of auto-pausing:
 * `AUTOPAUSE_KNOCK_INTERFACE`, default `eth0`
   <br>Describes the interface passed to the `knockd` daemon. If the default interface does not work, run the `ifconfig` command inside the container and derive the interface receiving the incoming connection from its output. The passed interface must exist inside the container. Using the loopback interface (`lo`) does likely not yield the desired results.
 
+## Autostop
+
+An option to stop the server after a specified time has been added for niche applications (e.g. billing saving on AWS Fargate). The function is incompatible with the Autopause functionality, as they basically cancel out each other.
+
+Note that the docker container variables have to be set accordingly (restart policy set to "no") and that the container has to be manually restarted.
+
+A starting, example compose file has been provided in [examples/docker-compose-autostop.yml](examples/docker-compose-autostop.yml).
+
+Enable the Autostop functionality by setting:
+
+```
+-e ENABLE_AUTOSTOP=TRUE
+```
+
+The following environment variables define the behaviour of auto-stopping:
+* `AUTOSTOP_TIMEOUT_EST`, default `3600` (seconds)
+  describes the time between the last client disconnect and the stopping of the server (read as timeout established)
+* `AUTOSTOP_TIMEOUT_INIT`, default `1800` (seconds)
+  describes the time between server start and the stopping of the server, when no client connects inbetween (read as timeout initialized)
+* `AUTOSTOP_PERIOD`, default `10` (seconds)
+  describes period of the daemonized state machine, that handles the stopping of the server
+
 ## Running on RaspberryPi
 
 To run this image on a RaspberryPi 3 B+, 4, or newer, use any of the image tags [list in the Java version section](#running-minecraft-server-on-different-java-version) that specify `armv7` for the architecture, which includes `itzg/minecraft-server:latest`.

bin/mc-send-to-console

@@ -12,4 +12,4 @@ if [ ! -p "${CONSOLE_IN_NAMED_PIPE}" ]; then
   exit 1
 fi
 
-echo "$@" > "${CONSOLE_IN_NAMED_PIPE:-/tmp/minecraft-console-in}"
+gosu minecraft bash -c "echo $* > '${CONSOLE_IN_NAMED_PIPE:-/tmp/minecraft-console-in}'"

docker-versions-create.sh

@@ -130,3 +130,28 @@ EOL
   fi
 
 done
+
+if [[ $tag ]]; then
+  if [ -f "$HOME/.github.env" ]; then
+    source "$HOME/.github.env"
+    if [[ $GITHUB_TOKEN ]]
+    then
+      auth=(-u ":$GITHUB_TOKEN")
+      base=https://api.github.com
+      : "${owner:=itzg}"
+      : "${repo:=docker-minecraft-server}"
+      read -r -d '' releaseBody << EOF
+        {
+          "tag_name": "$tag",
+          "name": "$tag",
+          "generate_release_notes": true
+        }
+EOF
+      if ! curl "${auth[@]}" -H "Accept: application/vnd.github.v3+json" \
+        "${base}/repos/${owner}/${repo}/releases" -d "$releaseBody"; then
+          echo "ERROR failed to create github release $tag"
+          exit 1
+      fi
+    fi
+  fi
+fi

examples/docker-compose-autostop.yml

@@ -0,0 +1,20 @@
+version: '3.8'
+
+services:
+  minecraft:
+    image: itzg/minecraft-server
+    ports:
+      - "25565:25565"
+    volumes:
+      - "mc:/data"
+    environment:
+      EULA: "TRUE"
+      ENABLE_AUTOSTOP: "TRUE"
+      # More aggressive settings for demo purposes
+      AUTOSTOP_TIMEOUT_INIT: "30"
+      AUTOSTOP_TIMEOUT_EST: "20"
+    # Important not to auto-restart the server!!!
+    restart: "no"
+
+volumes:
+  mc: {}

examples/docker-compose-paper.yml

@@ -1,18 +1,19 @@
 version: '3.8'
-
 services:
   mc:
     image: itzg/minecraft-server
+    container_name: paper
     environment:
       EULA: "true"
+      ENABLE_RCON: "true"
       TYPE: PAPER
-      VERSION: 1.9.4
-      # needed for Paper versions before 1.14
+      VIEW_DISTANCE: 10
+      MEMORY: 2G
       CONSOLE: "false"
     ports:
       - 25565:25565
     volumes:
       - mc-paper:/data
-
+    restart: unless-stopped
 volumes:
   mc-paper:

files/autostop/autostop-daemon.sh

@@ -0,0 +1,69 @@
+#!/bin/bash
+
+# needed for the clients connected function residing in autopause
+. /autopause/autopause-fcns.sh
+
+. ${SCRIPTS:-/}start-utils
+
+# wait for java process to be started
+while :
+do
+  if java_process_exists ; then
+    break
+  fi
+  sleep 0.1
+done
+
+STATE=INIT
+
+while :
+do
+  case X$STATE in
+  XINIT)
+    # Server startup
+    if mc_server_listening ; then
+      TIME_THRESH=$(($(current_uptime)+$AUTOSTOP_TIMEOUT_INIT))
+      logAutostop "MC Server listening for connections - stopping in $AUTOSTOP_TIMEOUT_INIT seconds"
+      STATE=II
+    fi
+    ;;
+  XII)
+    # Initial idle
+    if java_clients_connected ; then
+      logAutostop "Client connected - waiting for disconnect"
+      STATE=E
+    else
+      if [[ $(current_uptime) -ge $TIME_THRESH ]] ; then
+        logAutostop "No client connected since startup - stopping server"
+        /autostop/stop.sh
+        exit 0
+      fi
+    fi
+    ;;
+  XE)
+    # Established
+    if ! java_clients_connected ; then
+      TIME_THRESH=$(($(current_uptime)+$AUTOSTOP_TIMEOUT_EST))
+      logAutostop "All clients disconnected - stopping in $AUTOSTOP_TIMEOUT_EST seconds"
+      STATE=I
+    fi
+    ;;
+  XI)
+    # Idle
+    if java_clients_connected ; then
+      logAutostop "Client reconnected - waiting for disconnect"
+      STATE=E
+    else
+      if [[ $(current_uptime) -ge $TIME_THRESH ]] ; then
+        logAutostop "No client reconnected - stopping"
+        /autostop/stop.sh
+        exit 0
+      fi
+    fi
+    ;;
+  *)
+    logAutostop "Error: invalid state: $STATE"
+    ;;
+  esac
+  sleep $AUTOSTOP_PERIOD
+done

files/autostop/stop.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+. /start-utils
+
+logAutostopAction "Stopping Java process"
+kill -SIGTERM 1

scripts/start

@@ -40,7 +40,7 @@ if ! isTrue "${SKIP_SUDO:-false}" && [ $(id -u) = 0 ]; then
     echo 'hosts: files dns' > /etc/nsswitch.conf
   fi
 
-  exec gosu ${runAsUser}:${runAsGroup} ${SCRIPTS:-/}start-configuration $@
+  exec gosu ${runAsUser}:${runAsGroup} ${SCRIPTS:-/}start-configuration "$@"
 else
-  exec ${SCRIPTS:-/}start-configuration $@
+  exec ${SCRIPTS:-/}start-configuration "$@"
 fi

scripts/start-autostop

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+# shellcheck source=start-utils
+. "${SCRIPTS:-/}start-utils"
+
+: "${SERVER_PORT:=25565}"
+export SERVER_PORT
+
+log "Autostop functionality enabled"
+
+isDebugging && set -x
+
+if ! [[ $AUTOSTOP_PERIOD =~ ^[0-9]+$ ]]; then
+  AUTOSTOP_PERIOD=10
+  export AUTOSTOP_PERIOD
+  log "Warning: AUTOSTOP_PERIOD is not numeric, set to 10 (seconds)"
+fi
+if [ "$AUTOSTOP_PERIOD" -eq "0" ] ; then
+  AUTOSTOP_PERIOD=10
+  export AUTOSTOP_PERIOD
+  log "Warning: AUTOSTOP_PERIOD must not be 0, set to 10 (seconds)"
+fi
+if ! [[ $AUTOSTOP_TIMEOUT_EST =~ ^[0-9]+$ ]] ; then
+  AUTOSTOP_TIMEOUT_EST=3600
+  export AUTOSTOP_TIMEOUT_EST
+  log "Warning: AUTOSTOP_TIMEOUT_EST is not numeric, set to 3600 (seconds)"
+fi
+if ! [[ $AUTOSTOP_TIMEOUT_INIT =~ ^[0-9]+$ ]] ; then
+  AUTOSTOP_TIMEOUT_INIT=1800
+  export AUTOSTOP_TIMEOUT_INIT
+  log "Warning: AUTOSTOP_TIMEOUT_INIT is not numeric, set to 1800 (seconds)"
+fi
+
+/autostop/autostop-daemon.sh &

scripts/start-configuration

@@ -32,6 +32,15 @@ if [ ! -e /data/eula.txt ]; then
   writeEula
 fi
 
+if isTrue "${ENABLE_AUTOPAUSE}" && isTrue "${EXEC_DIRECTLY:-false}"; then
+    log "EXEC_DIRECTLY=true is incompatible with ENABLE_AUTOPAUSE=true"
+    exit 1
+fi
+
+if isTrue "${ENABLE_AUTOPAUSE}" && isTrue "${ENABLE_AUTOSTOP}"; then
+    log "ENABLE_AUTOPAUSE=true is incompatible with ENABLE_AUTOSTOP=true"
+    exit 1
+fi
 
 if [[ $PROXY ]]; then
     export http_proxy="$PROXY"
@@ -92,6 +101,10 @@ if isTrue "${ENABLE_AUTOPAUSE}"; then
   ${SCRIPTS:-/}start-autopause
 fi
 
+if isTrue "${ENABLE_AUTOSTOP}"; then
+  ${SCRIPTS:-/}start-autostop
+fi
+
 if versionLessThan 1.7; then
   echo "
 MC_HEALTH_EXTRA_ARGS=(

scripts/start-deployAirplane

@@ -1,12 +1,13 @@
 #!/bin/bash
-set -euo pipefail
-IFS=$'\n\t'
 
 . ${SCRIPTS:-/}start-utils
+set -euo pipefail
 isDebugging && set -x
 
-if [ "${VERSION}" != "LATEST" ] && [ "${VERSION}" != "1.16" ] && [ "${VERSION}" != "1.17" ] && [ "${VERSION}" != "PURPUR" ] && [ "${VERSION}" != "PURPUR-1.16" ] ; then
-  log "ERROR: Airplane server type only supports VERSION=LATEST, VERSION=1.17, VERSION=1.16, VERSION=PURPUR or VERSION=PURPUR-1.16. Note that these are branches, not #.#.# versions."
+IFS=$'\n\t'
+
+if [ "${VERSION}" != "LATEST" ] && [ "${VERSION}" != "1.17" ] && [ "${VERSION}" != "PURPUR" ] ; then
+  log "ERROR: Airplane server type only supports VERSION=LATEST, VERSION=1.17, VERSION=PURPUR. Note that these are branches, not #.#.# versions."
   exit 1
 fi
 
@@ -17,24 +18,21 @@ if  [ "${VERSION}" = "LATEST" ] || [ "${VERSION}" = "1.17" ]; then
   AIRPLANE_BRANCH="1.17"
 fi
 
-if [ "${VERSION}" = "1.16" ]; then
-  AIRPLANE_BRANCH="1.16"
-fi
-
 if [ "${VERSION}" = "PURPUR" ]; then
   AIRPLANE_BRANCH="Purpur-1.17"
   AIRPLANE_TYPE="airplanepurpur"
 fi
 
-if [ "${VERSION}" = "PURPUR-1.16" ]; then
-  AIRPLANE_BRANCH="Purpur-1.16"
-  AIRPLANE_TYPE="airplanepurpur"
-fi
-
 log "Using Airplane-${AIRPLANE_BRANCH} branch"
 
 export SERVER=airplane-${AIRPLANE_BRANCH}-${AIRPLANE_BUILD}.jar
 
+log "Removing old Airplane versions ..."
+shopt -s nullglob
+for f in airplane-*.jar; do
+  [[ $f != $SERVER ]] && rm $f
+done
+
 if [ ! -f "$SERVER" ] || isTrue "${FORCE_REDOWNLOAD:-false}"; then
     downloadUrl="https://ci.tivy.ca/job/Airplane-${AIRPLANE_BRANCH}/${AIRPLANE_BUILD}/artifact/launcher-${AIRPLANE_TYPE}.jar"
     log "Downloading Airplane from $downloadUrl ..."
@@ -47,6 +45,7 @@ fi
 
 # Normalize on Spigot for later operations
 export TYPE=SPIGOT
+export FAMILY=SPIGOT
 export SKIP_LOG4J_CONFIG=true
 
 exec ${SCRIPTS:-/}start-spiget "$@"

scripts/start-deployBukkitSpigot

@@ -127,6 +127,7 @@ fi
 
 # Normalize on Spigot for operations below
 export TYPE=SPIGOT
+export FAMILY=SPIGOT
 export SKIP_LOG4J_CONFIG=true
 
 exec ${SCRIPTS:-/}start-spiget "$@"

scripts/start-deployCF

@@ -233,4 +233,5 @@ elif [ -e "${FTB_DIR}/Install.sh" ]; then
   popd
 fi
 
+export FAMILY=FORGE
 exec "${SCRIPTS:-/}start-setupWorld" "$@"

scripts/start-deployCanyon

@@ -44,6 +44,7 @@ fi
 
 # Normalize on Spigot for later operations
 export TYPE=SPIGOT
+export FAMILY=SPIGOT
 export SKIP_LOG4J_CONFIG=true
 
 exec ${SCRIPTS:-/}start-spiget "$@"

scripts/start-deployCatserver

@@ -28,5 +28,6 @@ fi
 
 export SKIP_LOG4J_CONFIG=true
 
+export FAMILY=HYBRID
 # Continue to Final Setup
 exec ${SCRIPTS:-/}start-setupWorld "$@"

scripts/start-deployCrucible

@@ -56,5 +56,6 @@ fi
 
 export SERVER
 export SKIP_LOG4J_CONFIG=true
+export FAMILY=HYBRID
 
 exec "${SCRIPTS:-$(dirname "$0")}/start-setupWorld" "$@"

scripts/start-deployCustom

@@ -31,5 +31,5 @@ else
 fi
 
 export SKIP_LOG4J_CONFIG=true
-
+export FAMILY=HYBRID
 exec ${SCRIPTS:-/}start-setupWorld $@

scripts/start-deployFTBA

@@ -79,4 +79,5 @@ if ! [ -v SERVER ]; then
   exit 2
 fi
 
+export FAMILY=FORGE
 exec ${SCRIPTS:-/}start-setupWorld $@

scripts/start-deployFabric

@@ -2,27 +2,31 @@
 set -eu
 
 # shellcheck source=start-utils
-. ${SCRIPTS:-/}start-utils
+. "${SCRIPTS:-/}start-utils"
 
 requireVar VANILLA_VERSION
 export TYPE=FABRIC
-export SERVER=fabric-server-${VANILLA_VERSION}.jar
+: "${FABRIC_INSTALLER_VERSION:=${FABRICVERSION:-LATEST}}"
+: "${FABRIC_INSTALLER:=}"
+: "${FABRIC_INSTALLER_URL:=}"
+: "${FABRIC_LOADER_VERSION:=LATEST}"
 
 isDebugging && set -x
 
-if [[ ! -e ${SERVER} ]]; then
+log "Checking Fabric version information."
+if [[ $FABRIC_INSTALLER ]]; then
+  FABRIC_INSTALLER_VERSION=$(echo -n "$FABRIC_INSTALLER" | mc-image-helper hash)
+elif [[ $FABRIC_INSTALLER_URL ]]; then
+  FABRIC_INSTALLER_VERSION=$(echo -n "$FABRIC_INSTALLER_URL" | mc-image-helper hash)
+elif [[ ${FABRIC_INSTALLER_VERSION^^} = LATEST ]]; then
+  FABRIC_INSTALLER_VERSION=$(maven-metadata-release https://maven.fabricmc.net/net/fabricmc/fabric-installer/maven-metadata.xml)
+fi
 
-  : ${FABRIC_INSTALLER:=}
-  : ${FABRIC_INSTALLER_URL:=}
-  : ${FABRIC_LOADER_VERSION:=LATEST}
-  : ${FABRIC_INSTALLER_VERSION:=${FABRICVERSION:-LATEST}}
+export SERVER=fabric-server-${VANILLA_VERSION}-${FABRIC_INSTALLER_VERSION}.jar
+
+if [ ! \( -e ${SERVER} -a -e "server-${VANILLA_VERSION}.jar" \) ]; then
 
   if [[ -z $FABRIC_INSTALLER && -z $FABRIC_INSTALLER_URL ]]; then
-    log "Checking Fabric version information."
-    if [[ ${FABRIC_INSTALLER_VERSION^^} = LATEST ]]; then
-      FABRIC_INSTALLER_VERSION=$(maven-metadata-release https://maven.fabricmc.net/net/fabricmc/fabric-installer/maven-metadata.xml)
-    fi
-
     FABRIC_INSTALLER="fabric-installer-${FABRIC_INSTALLER_VERSION}.jar"
     FABRIC_INSTALLER_URL="https://maven.fabricmc.net/net/fabricmc/fabric-installer/${FABRIC_INSTALLER_VERSION}/fabric-installer-${FABRIC_INSTALLER_VERSION}.jar"
   elif [[ -z $FABRIC_INSTALLER ]]; then
@@ -66,7 +70,12 @@ if [[ ! -e ${SERVER} ]]; then
     exit 10
   fi
 
+  mv server.jar "server-${VANILLA_VERSION}.jar"
   mv fabric-server-launch.jar "${SERVER}"
 fi
 
-exec ${SCRIPTS:-/}start-setupWorld "$@"
+# Specify which server jar to run
+echo "serverJar=server-${VANILLA_VERSION}.jar" >  fabric-server-launcher.properties
+
+export FAMILY=FABRIC
+exec "${SCRIPTS:-/}start-setupWorld" "$@"

scripts/start-deployForge

@@ -147,4 +147,5 @@ else
   fi
 fi
 
+export FAMILY=FORGE
 exec "${SCRIPTS:-/}start-setupWorld" "$@"

scripts/start-deployLimbo

@@ -60,4 +60,5 @@ export LEVEL
 
 export SKIP_LOG4J_CONFIG=true
 
+export FAMILY=LIMBO
 exec ${SCRIPTS:-/}start-setupWorld $@

scripts/start-deployMagma

@@ -89,4 +89,5 @@ else
   fi
 fi
 
-exec ${SCRIPTS:-/}start-setupWorld $@
+export FAMILY=HYBRID
+exec ${SCRIPTS:-/}start-setupWorld "$@"

scripts/start-deployMohist

@@ -40,4 +40,5 @@ fi
 
 export SKIP_LOG4J_CONFIG=true
 
+export FAMILY=HYBRID
 exec "${SCRIPTS:-$(dirname "$0")}/start-setupWorld" "$@"

scripts/start-deployPaper

@@ -74,6 +74,7 @@ fi
 
 # Normalize on Spigot for downstream operations
 export TYPE=SPIGOT
+export FAMILY=SPIGOT
 export SKIP_LOG4J_CONFIG=true
 
 exec ${SCRIPTS:-/}start-spiget "$@"

scripts/start-deployPurpur

@@ -32,6 +32,7 @@ fi
 
 # Normalize on Spigot for later operations
 export TYPE=SPIGOT
+export FAMILY=SPIGOT
 export SKIP_LOG4J_CONFIG=true
 
 exec ${SCRIPTS:-/}start-spiget "$@"

scripts/start-deploySpongeVanilla

@@ -37,4 +37,5 @@ if [ ! -e $SERVER ] || [ -n "$FORCE_REDOWNLOAD" ]; then
   curl -sSL -o $SERVER https://repo.spongepowered.org/maven/org/spongepowered/$TYPE/$SPONGEVERSION/$SERVER
 fi
 
-exec ${SCRIPTS:-/}start-setupWorld $@
+export FAMILY=SPONGE
+exec ${SCRIPTS:-/}start-setupWorld "$@"

scripts/start-deployVanilla

@@ -52,5 +52,5 @@ elif [[ -L /data/minecraft_server.jar ]]; then
 fi
 
 isDebugging && ls -l
-
+export FAMILY=VANILLA
 exec "${SCRIPTS:-/}start-setupWorld" "$@"

scripts/start-finalExec

@@ -3,28 +3,93 @@
 . ${SCRIPTS:-/}start-utils
 isDebugging && set -x
 
-if [ -n "$OPS" ]; then
-  log "Updating ops"
-  rm -f /data/ops.txt.converted
-  echo $OPS | awk -v RS=, '{print}' > /data/ops.txt
-fi
-if isTrue "${OVERRIDE_OPS}"; then
-  log "Recreating ops.json file at server startup"
-  rm -f /data/ops.json
+if versionLessThan 1.7.6; then
+  opsFile=ops.txt
+  whitelistFile=white-list.txt
+else
+  opsFile=ops.json
+  whitelistFile=whitelist.json
 fi
 
-if [ -n "$WHITELIST" ]; then
-  log "Updating whitelist"
-  rm -f /data/white-list.txt.converted
-  if [[ $WHITELIST == *"-"* ]]; then
-    echo $WHITELIST | awk -v RS=, '{print}' | xargs -l -i curl -s https://playerdb.co/api/player/minecraft/{} | jq -r '.["data"]["player"] | {"uuid": .id, "name": .username}' | jq -s . > "whitelist.json"
+function process_user_file() {
+  local output=$1
+  local source=$2
+
+  if isURL "$source"; then
+    log "Downloading $output from $source"
+    if ! get -o /data/$output "$source"; then
+      log "ERROR: failed to download from $source"
+      exit 2
+    fi
   else
-    echo $WHITELIST | awk -v RS=, '{print}' > /data/white-list.txt
+    log "Copying $output from $source"
+    if ! cp "$source" /data/$output; then
+      log "ERROR: failed to copy from $source"
+      exit 1
+    fi
   fi
+}
+
+function process_user_csv() {
+  local output=$1
+  local list=$2
+  local playerDataList
+
+  if [[ "$output" == *"ops"* ]]; then
+    # Extra data for ops.json
+    userData='{"uuid": .id, "name": .username, "level": 4}'
+  else
+    userData='{"uuid": .id, "name": .username}'
+  fi
+
+  log "Updating ${output%.*}"
+  for i in ${list//,/ }
+  do
+    if [ -e "$output" ] && grep -q "$i" "$output"; then
+      log "$i already present in $output, skipping"
+      continue
+    fi
+    if ! playerData=$(get "https://playerdb.co/api/player/minecraft/$i" | jq -re ".data.player"); then
+      log "WARNING: Could not lookup user $i for ${output} addition"
+    else
+      playerDataList=$playerDataList$(echo $playerData | jq -r "$userData")
+    fi
+  done
+  local newUsers=$(echo $playerDataList | jq -s .)
+  if [[ $output =~ .*\.txt ]]; then
+    # username list for txt config (Minecraft <= 1.7.5)
+    echo $newUsers | jq -r '.[].name' >> /data/${output}
+    sort -u /data/${output} -o /data/${output}
+  elif [ -e /data/${output} ]; then
+    # Merge with existing json file
+    local currentUsers=$(cat /data/${output})
+    jq --argjson current "$currentUsers" --argjson new "$newUsers" -n '$new + $current | unique_by(.uuid)' > /data/${output}
+  else
+    # New json file
+    echo $newUsers > /data/${output}
+  fi
+}
+
+if isTrue "${OVERRIDE_OPS}"; then
+  log "Recreating ${opsFile} file at server startup"
+  rm -f /data/${opsFile}
 fi
+if [ -n "${OPS_FILE}" ] && [ ! -e "/data/${opsFile}" ]; then
+  process_user_file ${opsFile} "$OPS_FILE"
+fi
+if [ -n "${OPS}" ]; then
+  process_user_csv ${opsFile} "$OPS"
+fi
+
 if isTrue "${OVERRIDE_WHITELIST}"; then
-  log "Recreating whitelist.json file at server startup"
-  rm -f /data/whitelist.json
+  log "Recreating ${whitelistFile} file at server startup"
+  rm -f /data/${whitelistFile}
+fi
+if [ -n "${WHITELIST_FILE}" ] && [ ! -e "/data/${whitelistFile}" ]; then
+  process_user_file ${whitelistFile} "$WHITELIST_FILE"
+fi
+if [ -n "${WHITELIST}" ]; then
+  process_user_csv ${whitelistFile} "$WHITELIST"
 fi
 
 if [ -n "$ICON" ]; then
@@ -42,7 +107,36 @@ if [ -n "$ICON" ]; then
     fi
 fi
 
+canUseRollingLogs=true
+
+patchLog4jConfig() {
+  file=${1?}
+  url=${2?}
+  if ! get -o "$file" "$url"; then
+    log "ERROR: failed to download corrected log4j config"
+    exit 1
+  fi
+  JVM_OPTS="-Dlog4j.configurationFile=${file} ${JVM_OPTS}"
+  canUseRollingLogs=false
+}
+
+# Patch Log4j remote code execution vulnerability
+# See https://www.minecraft.net/en-us/article/important-message--security-vulnerability-java-edition
+if versionLessThan 1.7; then
+  : # No patch required here.
+elif isFamily VANILLA && versionLessThan 1.12; then
+  patchLog4jConfig log4j2_17-111.xml https://launcher.mojang.com/v1/objects/dd2b723346a8dcd48e7f4d245f6bf09e98db9696/log4j2_17-111.xml
+elif isFamily VANILLA && versionLessThan 1.17; then
+  patchLog4jConfig log4j2_112-116.xml https://launcher.mojang.com/v1/objects/02937d122c86ce73319ef9975b58896fc1b491d1/log4j2_112-116.xml
+elif versionLessThan 1.18.1; then
+  JVM_OPTS="-Dlog4j2.formatMsgNoLookups=true ${JVM_OPTS}"
+fi
+
 if isTrue ${ENABLE_ROLLING_LOGS:-false}; then
+  if ! ${canUseRollingLogs}; then
+    log "ERROR: Using rolling logs is currently not possible in the selected version due to CVE-2021-44228"
+    exit 1
+  fi
   # Set up log configuration
   LOGFILE="/data/log4j2.xml"
   if [ ! -e "$LOGFILE" ]; then
@@ -85,26 +179,6 @@ if [ -n "$JVM_DD_OPTS" ]; then
       done
 fi
 
-patchLog4jConfig() {
-  file=${1?}
-  url=${2?}
-  if ! get -o "$file" "$url"; then
-    log "ERROR: failed to download corrected log4j config"
-    exit 1
-  fi
-  JVM_OPTS="-Dlog4j.configurationFile=${file} ${JVM_OPTS}"
-}
-
-# Patch Log4j remote code execution vulnerability
-# NOTE: Paper, bukkit, and spigot are normalized to SPIGOT
-if [[ ${TYPE^^} != SPIGOT ]] && versionLessThan 1.12; then
-  patchLog4jConfig log4j2_17-111.xml https://launcher.mojang.com/v1/objects/dd2b723346a8dcd48e7f4d245f6bf09e98db9696/log4j2_17-111.xml
-elif [[ ${TYPE^^} != SPIGOT ]] && versionLessThan 1.17; then
-  patchLog4jConfig log4j2_112-116.xml https://launcher.mojang.com/v1/objects/02937d122c86ce73319ef9975b58896fc1b491d1/log4j2_112-116.xml
-elif versionLessThan 1.18.1; then
-  JVM_OPTS="-Dlog4j2.formatMsgNoLookups=true ${JVM_OPTS}"
-fi
-
 if isTrue ${ENABLE_JMX}; then
   : ${JMX_PORT:=7091}
   JVM_OPTS="${JVM_OPTS}

scripts/start-setupDatapack

@@ -0,0 +1,77 @@
+#!/bin/bash
+
+set -e -o pipefail
+
+: "${REMOVE_OLD_DATAPACKS:=false}"
+: "${DATAPACKS_FILE:=}"
+: "${REMOVE_OLD_DATAPACKS_DEPTH:=1} "
+: "${REMOVE_OLD_DATAPACKS_INCLUDE:=*.zip}"
+
+# shellcheck source=start-utils
+. "${SCRIPTS:-/}start-utils"
+isDebugging && set -x
+
+out_dir=/data/${LEVEL:-world}/datapacks
+
+# Remove old datapacks
+if isTrue "${REMOVE_OLD_DATAPACKS}" && [ -z "${DATAPACKS_FILE}" ]; then
+    if [ -d "$out_dir" ]; then
+    find "$out_dir" -mindepth 1 -maxdepth ${REMOVE_OLD_DATAPACKS_DEPTH:-16} -wholename "${REMOVE_OLD_DATAPACKS_INCLUDE:-*}" -not -wholename "${REMOVE_OLD_DATAPACKS_EXCLUDE:-}" -delete
+  fi
+fi
+
+if [[ "$DATAPACKS" ]]; then
+  mkdir -p "$out_dir"
+
+  for i in ${DATAPACKS//,/ }
+  do
+    if isURL "$i"; then
+      log "Downloading datapack $i ..."
+      if ! get -o "${out_dir}" "$i"; then
+        log "ERROR: failed to download from $i into $out_dir"
+        exit 2
+      fi
+    elif [[ -f "$i" && "$i" =~ .*\.zip ]]; then
+      log "Copying datapack located at $i ..."
+      out_file=$(basename "$i")
+      if ! cp "$i" "${out_dir}/$out_file"; then
+        log "ERROR: failed to copy from $i into $out_dir"
+        exit 2
+      fi
+    elif [[ -d "$i" ]]; then
+      log "Copying datapacks from $i ..."
+      cp "$i"/*.zip "${out_dir}"
+    else
+      log "ERROR Invalid URL or path given in DATAPACKS: $i"
+      exit 2
+    fi
+  done
+
+elif [[ "$DATAPACKS_FILE" ]]; then
+  if [ ! -f "$DATAPACKS_FILE" ]; then
+    log "ERROR: given DATAPACKS_FILE file does not exist"
+    exit 2
+  fi
+
+  mkdir -p "$out_dir"
+
+  args=(
+    -o "${out_dir}"
+    --log-progress-each
+    --skip-existing
+    --uris-file "${DATAPACKS_FILE}"
+  )
+  if isTrue "${REMOVE_OLD_DATAPACKS}"; then
+    args+=(
+    --prune-others "${REMOVE_OLD_DATAPACKS_INCLUDE}"
+    --prune-depth "${REMOVE_OLD_DATAPACKS_DEPTH}"
+    )
+  fi
+
+  if ! get "${args[@]}" ; then
+    log "ERROR: failed to retrieve one or more datapacks"
+    exit 1
+  fi
+fi
+
+exec "${SCRIPTS:-/}start-setupModpack" "$@"

scripts/start-setupServerProperties

@@ -33,15 +33,18 @@ function setServerProp {
 }
 
 function customizeServerProps {
-  if [ -n "$WHITELIST" ] || isTrue "${ENABLE_WHITELIST:-false}"; then
-    log "Creating whitelist"
-    setServerPropValue "whitelist" "true"
+  # Whitelist processing
+  if [ -n "$WHITELIST" ] || [ -n "$WHITELIST_FILE" ] || isTrue "${ENABLE_WHITELIST:-false}"; then
+    log "Enabling whitelist functionality"
     setServerPropValue "white-list" "true"
   else
-    log "Disabling whitelist"
-    setServerPropValue "whitelist" "false"
+    log "Disabling whitelist functionality"
     setServerPropValue "white-list" "false"
   fi
+  setServerProp "enforce-whitelist" ENFORCE_WHITELIST
+  if [[ $(grep "enforce-whitelist" $SERVER_PROPERTIES) != *true ]]; then
+    log "WARNING: whitelist enabled but not enforced. Set ENFORCE_WHITELIST=TRUE or update 'enforce-whitelist' in server.properties to enforce the whitelist."
+  fi
 
   # If not provided, generate a reasonable default message-of-the-day,
   # which shows up in the server listing in the client
@@ -104,7 +107,6 @@ function customizeServerProps {
   setServerProp "op-permission-level" OP_PERMISSION_LEVEL
   setServerProp "prevent-proxy-connections" PREVENT_PROXY_CONNECTIONS
   setServerProp "use-native-transport" USE_NATIVE_TRANSPORT
-  setServerProp "enforce-whitelist" ENFORCE_WHITELIST
   setServerProp "simulation-distance" SIMULATION_DISTANCE
   setServerPropValue "motd" "$(echo "$MOTD" | mc-image-helper asciify)"
   [[ $LEVEL_TYPE ]] && setServerPropValue "level-type" "${LEVEL_TYPE^^}"

scripts/start-setupWorld

@@ -69,4 +69,4 @@ if [[ "$WORLD" ]] && ( isTrue "${FORCE_WORLD_COPY}" || [ ! -d "$worldDest" ] );
   fi
 fi
 
-exec "${SCRIPTS:-/}start-setupModpack" "$@"
+exec "${SCRIPTS:-/}start-setupDatapack" "$@"

scripts/start-spiget

@@ -22,6 +22,20 @@ containsJars() {
   return 1
 }
 
+containsPlugin() {
+  file=${1?}
+
+  pat='plugin.yml$'
+
+  while read -r line; do
+    if [[ $line =~ $pat ]]; then
+      return 0
+    fi
+  done <<<$(unzip -l "$file")
+
+  return 1
+}
+
 getResourceFromSpiget() {
   resource=${1?}
 
@@ -81,9 +95,12 @@ downloadResourceFromSpiget() {
     log "Extracting contents of resource ${resource} into plugins"
     unzip -o -q -d /data/plugins "${tmpfile}"
     rm "${tmpfile}"
-  else
+  elif containsPlugin "${tmpfile}"; then
     log "Moving resource ${resource} into plugins"
     mv "${tmpfile}" "/data/plugins/${resource}.jar"
+  else
+    log "ERROR downloaded resource '${resource}' seems to be not a valid plugin"
+    exit 2
   fi
 
 }

scripts/start-utils

@@ -93,6 +93,14 @@ function logAutopauseAction() {
   echo "[$(date -Iseconds)] [Autopause] $*"
 }
 
+function logAutostop() {
+  echo "[Autostop loop] $*"
+}
+
+function logAutostopAction() {
+  echo "[$(date -Iseconds)] [Autostop] $*"
+}
+
 function normalizeMemSize() {
   local scale=1
   case ${1,,} in
@@ -112,34 +120,7 @@ function normalizeMemSize() {
 }
 
 function versionLessThan() {
-  local activeParts
-  version=${VANILLA_VERSION%%-*} # for snapshot/rc versions
-  version=${version##b} # for versions like b1.7.3
-  IFS=. read -ra activeParts <<<"${version}"
-
-  local givenParts
-  IFS=. read -ra givenParts <<<"$1"
-
-  if ((${#activeParts[@]} < 2)); then
-    return 1
-  fi
-
-  if ((${#activeParts[@]} == 2)); then
-    if ((activeParts[0] < givenParts[0])) ||
-      ((activeParts[0] == givenParts[0] && activeParts[1] < givenParts[1])); then
-      return 0
-    else
-      return 1
-    fi
-  else
-    if ((activeParts[0] < givenParts[0])) ||
-      ((activeParts[0] == givenParts[0] && activeParts[1] < givenParts[1])) ||
-      ((activeParts[0] == givenParts[0] && activeParts[1] == givenParts[1] && activeParts[2] < givenParts[2])); then
-      return 0
-    else
-      return 1
-    fi
-  fi
+  mc-image-helper compare-versions "${VANILLA_VERSION}" lt "${1?}"
 }
 
 requireVar() {
@@ -163,7 +144,7 @@ requireEnum() {
     fi
   done
 
-  log "ERROR: $var must be set to one of $@"
+  log "ERROR: $var must be set to one of $*"
 #  exit 1
 }
 
@@ -189,4 +170,13 @@ function get() {
     flags+=("--debug")
   fi
   mc-image-helper "${flags[@]}" get "$@"
+}
+
+function isFamily() {
+  for f in "${@}"; do
+    if [[ $FAMILY == "$f" ]]; then
+      return 0
+    fi
+  done
+  return 1
 }