scripts

1 files changed, 255 insertions, 0 deletions

diff --git a/mcjar b/mcjar
new file mode 100755
index 0000000..593e71a
--- /dev/null
+++ b/mcjar
@@ -0,0 +1,255 @@
+#!/bin/sh
+
+set -e
+
+lower() {
+	echo "$1" | tr '[:upper:]' '[:lower:]'
+}
+
+upper() {
+	echo "$1" | tr '[:lower:]' '[:upper:]'
+}
+
+# global
+MC_TYPE="$(lower "${MC_TYPE:-vanilla}")"
+MC_VERSION="$(lower "${MC_VERSION:-latest}")"
+
+# papermc
+PAPERMC_BUILD="$(lower "${PAPERMC_BUILD:-latest}")"
+
+# fabric
+FABRIC_LOADER="$(lower "${FABRIC_LOADER:-latest}")"
+FABRIC_INSTALLER="$(lower "${FABRIC_INSTALLER:-latest}")"
+
+# other
+QUIET=1
+
+req() {
+	res=$(curl --fail --silent "$1")
+	code=$?
+
+	if [ $code -ne 0 ]; then
+		echo "null";
+	else
+		echo "$res";
+	fi
+}
+
+error() {
+	printf '\x1b[31m[ERROR]\t\x1b[0m%s\n' "$*" > /dev/stderr
+	exit 1;
+}
+
+log() {
+	if [ "$QUIET" -eq 0 ]; then
+		printf '\x1b[0m[LOG]\t%s\n' "$*" > /dev/stdout
+	fi
+}
+
+index_array() {
+	array="$1"
+	key="$2"
+	type="$3"
+
+	if [ "$key" = "latest" ]; then
+		index=$(echo "$array" | jq ". | index( last )");
+	else
+		index=$(echo "$array" | jq ". | index( \"$key\" )");
+	fi
+
+	if [ "$index" = "null" ]; then
+		error "Invalid $type: $key"
+	else
+		echo "$array" | jq -r ".[$index]";
+	fi
+}
+
+#https://api.papermc.io/v2/projects/velocity/versions/3.3.0-SNAPSHOT/
+
+papermc() {
+	api="https://api.papermc.io/v2/projects"
+
+	log "Using papermc api v2"
+
+	get_version() {
+		log "Getting VERSION for '$MC_TYPE'"
+		versions=$(req "$api/$MC_TYPE" | jq -r '.versions')
+		if [ "$versions" = "null" ]; then
+			error "Invalid TYPE: $MC_TYPE (no versions)"
+		fi
+		MC_VERSION=$(index_array "$versions" "$MC_VERSION" "VERSION")
+		log "VERSION: $MC_VERSION"
+	}
+
+	get_build() {
+		log "Getting BUILD for '$MC_TYPE@$MC_VERSION'"
+		builds=$(req "$api/$MC_TYPE/versions/$MC_VERSION" | jq -r ".builds")
+		if [ "$builds" = "null" ]; then
+			error "Invalid VERSION: $MC_TYPE@$MC_TYPE (no builds)"
+		fi
+		PAPERMC_BUILD=$(index_array "$builds" "$PAPERMC_BUILD" "BUILD")
+		log "BUILD: $PAPERMC_BUILD"
+	}
+
+	get_version
+	get_build
+
+	echo "$api/$MC_TYPE/versions/$MC_VERSION/builds/$PAPERMC_BUILD/downloads/$MC_TYPE-$MC_VERSION-$PAPERMC_BUILD.jar"
+}
+
+fabric() {
+	api="https://meta.fabricmc.net/v2/versions"
+
+	log "Using fabric api v2"
+
+	get_fabric_impl() {
+		type="$1"
+		value="$2"
+		res=""
+		if [ "$value" = "latest" ]; then
+			res=$(req "$api/$type" | jq -r 'map(select(.stable == true) | .version) | reverse')
+		else
+			res=$(req "$api/$type" | jq -r 'map(.version) | reverse')
+		fi;
+		echo $res;
+	}
+
+	get_game() {
+		log "Getting VERSION for '$MC_TYPE'"
+		games=$(get_fabric_impl "game" "$MC_VERSION")
+		MC_VERSION=$(index_array "$games" "$MC_VERSION" "VERSION")
+		log "VERSION: $MC_VERSION"
+	}
+
+	get_loader() {
+		log "Getting LOADER for '$MC_TYPE'"
+		loaders=$(get_fabric_impl "loader" "$FABRIC_LOADER")
+		FABRIC_LOADER=$(index_array "$loaders" "$FABRIC_LOADER" "LOADER")
+		log "LOADER: $FABRIC_LOADER"
+	}
+
+	get_installer() {
+		log "Getting INSTALLER for '$MC_TYPE'"
+		installers=$(get_fabric_impl "installer" "$FABRIC_INSTALLER")
+		FABRIC_INSTALLER=$(index_array "$installers" "$FABRIC_INSTALLER" "INSTALLER")
+		log "INSTALLER: $FABRIC_INSTALLER"
+	}
+
+	get_game
+	get_loader
+	get_installer
+
+	echo "$api/loader/$MC_VERSION/$FABRIC_LOADER/$FABRIC_INSTALLER/server/jar"
+}
+
+vanilla() {
+	versions=$(req 'https://launchermeta.mojang.com/mc/game/version_manifest.json' | jq '.versions | map({ "id": .id, "type": .type, "url": .url }) | reverse');
+
+	map_type_impl() {
+		type="$1"
+		echo "$versions" | jq -r "map(select(.type == \"$type\"))"
+	}
+
+	get_version() {
+		log "Getting VERSION for '$MC_TYPE'"
+		version=""
+		case "$MC_VERSION" in
+			"latest")
+				version=$(map_type_impl "release" | jq -r 'last')
+				;;
+			"snapshot")
+				version=$(map_type_impl "snapshot" | jq -r 'last')
+				;;
+			*)
+				version=$(echo "$versions" | jq ".[] | select(.id == \"$MC_VERSION\")")
+				;;
+		esac
+
+		if [ "$version" = "null" ] || [ "$version" = "" ]; then
+			error "Invalid VERSION: $MC_VERSION"
+		fi
+
+		log "VERSION: $(echo "$version" | jq -r '.id')"
+
+		json=$(echo "$version" | jq -r '.url')
+		url=$(req "$json" | jq -r '.downloads.server.url')
+
+		if [ "$url" = "null" ]; then
+			error "Cannot get server jar for VERSION: $MC_VERSION"
+		fi
+
+		echo "$url"
+	}
+
+	get_version
+}
+
+get_url() {
+
+	log "TYPE: $MC_TYPE"
+
+	case "$MC_TYPE" in
+		"vanilla")
+			vanilla
+			;;
+		"paper" | "waterfall" | "velocity" | "folia")
+			papermc
+			;;
+		"fabric")
+			fabric
+			;;
+		*)
+			error "Invalid TYPE: $MC_TYPE"
+			;;
+	esac
+}
+
+usage() {
+	printf "usage: mcjar [options]\n"
+}
+
+help() {
+	printf "usage: mcjar [options]\n\n"
+	printf "options:\n"
+	printf "\t-h\tshow this message\n"
+	printf "\t-l\tshow logging (verbose)\n\n"
+
+	printf "\t-t TYPE\t\tset the mc server type\n"
+	printf "\t  [vanilla,fabric,paper,folia,velocity,waterfall]\n\n"
+	printf "\t-v VERSION\tset the mc server version\n"
+	printf "\t  [latest,snapshot,<version>]\n\n"
+
+	printf "environment:\n"
+	printf "\tMC_TYPE\t\tsets the mc server type (same as -t TYPE)\n"
+	printf "\tMC_VERSION\tsets the mc server version (same as -v VERSION)\n\n"
+
+	printf "\tPAPERMC_BUILD\tsets the papermc build\n\n"
+
+	printf "\tFABRIC_LOADER\t\tsets the fabric loder version\n"
+	printf "\tFABRIC_INSTALLER\tsets the fabric installer version\n\n"
+}
+
+
+while getopts "hlt:v:" arg > /dev/null; do
+	case $arg in
+		h)
+			help
+			exit 0
+			;;
+		l)
+			QUIET=0
+			;;
+		t)
+			MC_TYPE=${OPTARG}
+			;;
+		v)
+			MC_VERSION=${OPTARG}
+			;;
+		?)
+			error "unknown option"
+			exit 1
+			;;
+	esac;
+done;
+
+get_url