games-server/bedrock-server: add custom attach command

Since the bedrock-server is running as an interactive console process
in background, this custom command 'attach' enables the possibility to
connect with dtach to that interactive console and send commands to
the running server.

Package-Manager: Portage-3.0.4, Repoman-3.0.1
Signed-off-by: Conrad Kostecki <conikost@gentoo.org>

2 files changed, 69 insertions, 0 deletions

diff --git a/games-server/bedrock-server/files/bedrock-server.confd b/games-server/bedrock-server/files/bedrock-server.confd
new file mode 100644
index 000000000000..d4185934e066
--- /dev/null
+++ b/games-server/bedrock-server/files/bedrock-server.confd
@@ -0,0 +1,7 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# Dtach options, which will used, when the `attach` extra command is called.
+# By default, CTRL+D is used, and no redraw is done,
+# when you want to detach from the attached console.
+DTACH_OPTS="-e '^D' -r none"
diff --git a/games-server/bedrock-server/files/bedrock-server.initd-r2 b/games-server/bedrock-server/files/bedrock-server.initd-r2
new file mode 100644
index 000000000000..1ff60aa7816f
--- /dev/null
+++ b/games-server/bedrock-server/files/bedrock-server.initd-r2
@@ -0,0 +1,62 @@
+#!/sbin/openrc-run
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+if [ "${SVCNAME}" = "bedrock-server" ]; then
+	instance="main"
+else
+	instance="${SVCNAME#*.}"
+fi
+
+bedrock_command="/opt/bin/bedrock-server"
+bedrock_path="/var/lib/bedrock-server"
+bedrock_path_data="/opt/bedrock-server"
+bedrock_path_instance="${bedrock_path}/${instance}"
+dtach_tmpfile="$(mktemp -u)"
+name="Minecraft Bedrock server (${instance})"
+pidfile="/run/bedrock-server.${instance}.pid"
+start_stop_daemon_args="--chdir ${bedrock_path_instance}"
+
+description_attach="Attaches to the session (interactive console) of the Minecraft Bedrock server"
+extra_started_commands="attach"
+
+command="/usr/bin/dtach"
+command_background="true"
+command_args="-N ${dtach_tmpfile} ${bedrock_command}"
+command_group="bedrock"
+command_user="bedrock"
+
+depend() {
+	use net
+}
+
+start_pre() {
+	checkpath -d -o "${command_user}:${command_group}" -q "${bedrock_path}" "${bedrock_path_instance}"
+
+	local bedrock_configs=( "permissions.json" "server.properties" "whitelist.json" )
+	for bedrock_config in ${bedrock_configs[@]}; do
+		if [ ! -f "${bedrock_path_instance}/${bedrock_config}" ]; then
+			cp "${bedrock_path_data}/${bedrock_config}" "${bedrock_path_instance}"
+			checkpath -f -o "${command_user}:${command_group}" -q "${bedrock_path_instance}/${bedrock_config}"
+		fi
+	done
+
+	local bedrock_ressources=( "behavior_packs" "definitions" "resource_packs" "structures" )
+	for bedrock_ressource in ${bedrock_ressources[@]}; do
+		if [ ! -L "${bedrock_path_instance}/${bedrock_ressource}" ]; then
+			ln -sf "${bedrock_path_data}/${bedrock_ressource}" "${bedrock_path_instance}"
+		fi
+	done
+}
+
+attach() {
+	pidnumber="$(cat ${pidfile})"
+	dtach_tmpfile="$(cat /proc/${pidnumber}/cmdline | tr '\0' ' ' | awk '{print $3}')"
+
+	if [ -S "${dtach_tmpfile}" ]; then
+		eval "${command}" -a "${dtach_tmpfile}" "${DTACH_OPTS}"
+	else
+		eerror "The determined socket file for dtach could not be found!"
+		eerror "Did the process crash?"
+	fi
+}