games-simulation/openttd: add custom attach command

Adding a custom attach command, so you can attach yourself with 'dtach'
in the interactive console open OpenTTD, when running in server mode.

Signed-off-by: Conrad Kostecki <conikost@gentoo.org>

5 files changed, 47 insertions, 23 deletions

diff --git a/games-simulation/openttd/files/openttd.confd b/games-simulation/openttd/files/openttd.confd
deleted file mode 100644
index 399ab5d984c6..000000000000
--- a/games-simulation/openttd/files/openttd.confd
+++ /dev/null
@@ -1,5 +0,0 @@
-# Copyright 1999-2022 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-# Options for your started OpenTTD server
-openttd_opts=""
diff --git a/games-simulation/openttd/files/openttd.confd-r1 b/games-simulation/openttd/files/openttd.confd-r1
new file mode 100644
index 000000000000..47cae2fda01a
--- /dev/null
+++ b/games-simulation/openttd/files/openttd.confd-r1
@@ -0,0 +1,10 @@
+# Copyright 1999-2022 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 signal is send,
+# when you want to detach from the attached console.
+dtach_opts="-e '^D' -r none"
+
+# Options for your started OpenTTD server
+openttd_opts=""
diff --git a/games-simulation/openttd/files/openttd.initd-r2 b/games-simulation/openttd/files/openttd.initd-r2
deleted file mode 100644
index 6a24bbc25072..000000000000
--- a/games-simulation/openttd/files/openttd.initd-r2
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/sbin/openrc-run
-# Copyright 1999-2022 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License, v2 or later
-
-description="OpenTTD dedicated game server"
-pidfile="/run/${SVCNAME}.pid"
-
-command="/usr/bin/openttd"
-command_args="-D ${openttd_opts}"
-command_background="true"
-command_group="openttd"
-command_user="openttd"
-
-depend() {
-	need net
-}
diff --git a/games-simulation/openttd/files/openttd.initd-r3 b/games-simulation/openttd/files/openttd.initd-r3
new file mode 100644
index 000000000000..89680f91d267
--- /dev/null
+++ b/games-simulation/openttd/files/openttd.initd-r3
@@ -0,0 +1,34 @@
+#!/sbin/openrc-run
+# Copyright 1999-2022 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License, v2 or later
+
+description="OpenTTD dedicated game server"
+dtach_tmpfile="$(mktemp -u)"
+name="OpenTTD dedicated game server"
+openttd_command="/usr/bin/openttd"
+pidfile="/run/${SVCNAME}.pid"
+
+description_attach="Attaches to the session (interactive console) of the OpenTTD game server"
+extra_started_commands="attach"
+
+command="/usr/bin/dtach"
+command_args="-N ${dtach_tmpfile} ${openttd_command} -D ${openttd_opts}"
+command_background="true"
+command_group="openttd"
+command_user="openttd"
+
+depend() {
+        need net
+}
+
+attach() {
+        pidnumber="$(cat ${pidfile})"
+        dtach_tmpfile="$(cat /proc/${pidnumber}/cmdline | tr '\0' ' ' | awk '{print $3}')"
+
+        if [ -S "${dtach_tmpfile}" ]; then
+                eval "${command}" -a "${dtach_tmpfile}" "${dtach_opts}"
+        else
+                eerror "The determined socket file for dtach could not be found!"
+                eerror "Did the process crash?"
+        fi
+}
diff --git a/games-simulation/openttd/openttd-12.2.ebuild b/games-simulation/openttd/openttd-12.2-r1.ebuild
index aaeac2d9a8f2..2c6d18c4b2c4 100644
--- a/games-simulation/openttd/openttd-12.2.ebuild
+++ b/games-simulation/openttd/openttd-12.2-r1.ebuild
@@ -22,6 +22,7 @@ RDEPEND="
 	dedicated? (
 		acct-group/openttd
 		acct-user/openttd
+		app-misc/dtach
 	)
 	!dedicated? (
 		allegro? ( media-libs/allegro:5 )
@@ -90,8 +91,8 @@ src_configure() {
 src_install() {
 	cmake_src_install
 	if use dedicated ; then
-		newconfd "${FILESDIR}"/openttd.confd openttd
-		newinitd "${FILESDIR}"/openttd.initd-r2 openttd
+		newconfd "${FILESDIR}"/openttd.confd-r1 openttd
+		newinitd "${FILESDIR}"/openttd.initd-r3 openttd
 	fi
 }