initial

1 files changed, 259 insertions, 0 deletions

diff --git a/minecraft/mclauncher b/minecraft/mclauncher
new file mode 100644
index 0000000..721b48f
--- /dev/null
+++ b/minecraft/mclauncher
@@ -0,0 +1,259 @@
+#!/bin/sh
+
+set -e
+
+#
+# DEFAULT VARIABLE GENERATORS
+#
+
+jvm_args() {
+	MEMORY="${MEMORY:-1G}"
+	printf -- "-Xms$MEMORY -Xmx$MEMORY "
+	printf -- "-XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 "
+	printf -- "-XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch "
+	printf -- "-XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M "
+	printf -- "-XX:G1ReservePercent=20 -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 "
+	printf -- "-XX:InitiatingHeapOccupancyPercent=15 -XX:G1MixedGCLiveThresholdPercent=90 "
+	printf -- "-XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem "
+	printf -- "-XX:MaxTenuringThreshold=1 "
+}
+
+#
+# ENV VARS
+#
+
+SERVER_DIR="$(realpath ${MC_DIR:-./server})"
+JVMARGS=${JVMARGS:-$(jvm_args)}
+
+#
+# PREDEFINE VARS
+#
+
+MCLAUNCHER_INFO=""
+MCLAUNCHER_BINARY=""
+MCLAUNCHER_QUIET=1
+
+#
+# HELPERS
+#
+
+error() {
+	printf '\x1b[31m[ERROR]\t\x1b[0m%s\n' "$*" > /dev/stderr
+	exit 1;
+}
+
+log() {
+	if [ "$MCLAUNCHER_QUIET" -eq 0 ]; then
+		printf '\x1b[0m[LOG]\t%s\n' "$*" > /dev/stderr
+	fi
+}
+
+step() {
+	if [ "$MCLAUNCHER_QUIET" -eq 0 ]; then
+		printf '\x1b[36m[STEP]\t\x1b[0m%s\n' "$*" > /dev/stderr
+	fi
+}
+
+get_key() {
+	echo "$MCLAUNCHER_INFO" | grep "$1=" | awk -F '=' '{ print $2 }'
+}
+
+#
+# INFO STEP
+# gets the up to date information from mcjar
+#
+
+info_step() {
+	step "info"
+
+	# getting latest info from mcjar
+	MCLAUNCHER_INFO="$(mcjar -a)"
+
+	[ "$MCLAUNCHER_QUIET" -eq 1 ] || echo "$MCLAUNCHER_INFO";
+}
+
+#
+# BINARY STEP
+# attempts to find the current binary installed on the system
+#
+
+binary_step_forge() {
+	jar_name="$(get_key "JAR_NAME")"
+	jar_prefix="${jar_name%-installer.jar}"
+	suffixs="$(echo ".jar;-shim.jar;-universal.jar" | tr ";" "\n")"
+
+	IFS=$'\n'
+	for suffix in $suffixs; do
+		if [ -f "$SERVER_DIR/$jar_prefix$suffix" ]; then
+			MCLAUNCHER_BINARY="$jar_prefix$suffix"
+			return;
+		fi
+	done
+}
+
+binary_step_default() {
+	jar_name="$(get_key "JAR_NAME")"
+	if [ -f "$SERVER_DIR/$jar_name" ]; then
+		MCLAUNCHER_BINARY="$jar_name"
+	fi
+}
+
+binary_step() {
+	step "binary"
+
+	MCLAUNCHER_BINARY=""
+	type="$(get_key "MC_TYPE")"
+	case "$type" in
+		"forge")
+			binary_step_forge
+			;;
+		*)
+			binary_step_default
+			;;
+	esac
+
+	if [ "$MCLAUNCHER_BINARY" != "" ]; then
+		log "found binary '$MCLAUNCHER_BINARY'"
+	else
+		log "could not locate binary... will download"
+	fi
+}
+
+#
+# DOWNLOAD STEP
+# download the binary if it needs to needs updated
+#
+
+download_step() {
+	step "download"
+
+	if [ "$MCLAUNCHER_BINARY" != "" ]; then
+		log "jar is up to date... skipping"
+		return;
+	fi
+
+	# clean up old files
+	rm -f "$SERVER_DIR"/*.jar
+	rm -f "$SERVER_DIR"/*.jar.log
+	rm -f "$SERVER_DIR"/*.bat
+	rm -f "$SERVER_DIR/run.sh"
+
+	# update the jar
+	log "jar is out of date... updating"
+	jar_url="$(get_key "JAR_URL")"
+	jar_name="$(get_key "JAR_NAME")"
+	log "downloading '$jar_url'"
+	wget -q "$jar_url" -O "$SERVER_DIR/$jar_name"
+	MCLAUNCHER_BINARY="$jar_name"
+}
+
+#
+# INSTALL STEP
+# some mc types need an extra install step to setup the server files before running
+#
+
+install_step_forge() {
+	log "installing forge server"
+	jar_name="$(get_key "JAR_NAME")"
+	java -jar "$SERVER_DIR/$jar_name" --installServer
+
+	binary_step_forge
+	if [ "$MCLAUNCHER_BINARY" = "" ]; then
+		error "could not locate forge binary"
+	fi
+}
+
+install_step() {
+	step "install"
+
+	type="$(get_key "MC_TYPE")"
+	case "$type" in
+		"forge")
+			install_step_forge
+			;;
+		*)
+			log "install step not needed for '$type'"
+			;;
+	esac
+}
+
+#
+# EXECUTE STEP
+# run the thing!!!!!!
+#
+
+execute_step_default() {
+	jar_name="$(get_key "JAR_NAME")"
+	exec java $JVMARGS -jar "$SERVER_DIR/$jar_name" nogui
+}
+
+execute_step_forge() {
+	if [ -f "$SERVER_DIR/run.sh" ]; then
+		echo "$JVMARGS" > "$SERVER_DIR/user_jvm_args.txt"
+		chmod +x "$SERVER_DIR/run.sh"
+		exec "$SERVER_DIR/run.sh" nogui
+	else
+		exec java $JVMARGS -jar "$SERVER_DIR/$MCLAUNCHER_BINARY" nogui
+	fi
+}
+
+execute_step() {
+	step "execute"
+
+	echo "eula=true" > "$SERVER_DIR/eula.txt"
+
+	type="$(get_key "MC_TYPE")"
+	case "$type" in
+		"forge")
+			execute_step_forge
+			;;
+		*)
+			execute_step_default
+			;;
+	esac
+}
+
+chk_command() {
+	if ! command -v "$1" > /dev/null; then
+		>&2 echo "error: command '$1' could not be found"
+		exit 1
+	fi
+}
+
+help() {
+	printf "usage: mclauncher [options]\n\n"
+	printf "options:\n"
+	printf "\t-h\tshow this message\n"
+	printf "\t-l\tshow logging (verbose)\n\n"
+	printf "environment:\n"
+	printf "\tsee 'mcjar -h' for environment\n"
+}
+
+chk_command mcjar
+chk_command java
+chk_command awk
+chk_command getopts
+
+while getopts "hl" arg 2>/dev/null; do
+	case "$arg" in
+		h)
+			help
+			exit 0
+			;;
+		l)
+			MCLAUNCHER_QUIET=0
+			;;
+		?)
+			error "unknown option"
+			;;
+	esac;
+done;
+
+mkdir -p "$SERVER_DIR"
+cd "$SERVER_DIR"
+
+info_step
+binary_step
+download_step
+install_step
+execute_step