acct-user/vdr: add user package

This user package for vdr tries to keep backward compatibility with
existing installations and adds some comfort for users of some packages
that need extra group membership

Bug: https://bugs.gentoo.org/781344
Closes: https://bugs.gentoo.org/699846
Closes: https://github.com/gentoo/gentoo/pull/21776
Signed-off-by: Martin Dummer <martin.dummer@gmx.net>
Signed-off-by: Conrad Kostecki <conikost@gentoo.org>

2 files changed, 85 insertions, 0 deletions

diff --git a/acct-user/vdr/metadata.xml b/acct-user/vdr/metadata.xml
new file mode 100644
index 000000000000..b0a6246a09bb
--- /dev/null
+++ b/acct-user/vdr/metadata.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person" proxied="yes">
+		<email>martin.dummer@gmx.net</email>
+		<name>Martin Dummer</name>
+	</maintainer>
+	<maintainer type="project" proxied="proxy">
+		<email>proxy-maint@gentoo.org</email>
+		<name>Proxy Maintainers</name>
+	</maintainer>
+	<maintainer type="project">
+		<email>vdr@gentoo.org</email>
+		<name>Gentoo VDR Project</name>
+	</maintainer>
+	<use>
+		<flag name="graphlcd">Prepare group membership for <pkg>media-plugins/vdr-graphlcd</pkg>.</flag>
+		<flag name="legacy-homedir">Keep old home directory /var/vdr of an existing installation. When
+			this useflag is cleared, the home directory is switched to FHS conformant /var/lib/vdr</flag>
+		<flag name="remote">Prepare group membership for <pkg>media-plugins/vdr-remote</pkg>.</flag>
+		<flag name="serial">Prepare group membership for <pkg>media-plugins/vdr-serial</pkg>.</flag>
+	</use>
+</pkgmetadata>
diff --git a/acct-user/vdr/vdr-0.ebuild b/acct-user/vdr/vdr-0.ebuild
new file mode 100644
index 000000000000..55986b2ff78d
--- /dev/null
+++ b/acct-user/vdr/vdr-0.ebuild
@@ -0,0 +1,62 @@
+# Copyright 2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit acct-user user-info
+
+ACCT_USER_ID=452
+ACCT_USER_HOME=/var/lib/vdr
+ACCT_USER_GROUPS=( vdr audio cdrom video )
+
+DESCRIPTION="VDR (VideoDiskRecorder) service user"
+IUSE="graphlcd legacy-homedir remote serial systemd"
+
+acct-user_add_deps
+
+pkg_setup() {
+	# if user wants to preserve his existing vdr installation,
+	# he can set USE=legacy-homedir
+	use legacy-homedir && ACCT_USER_HOME=/var/vdr
+
+	# media-plugins/vdr-graphlcd
+	use graphlcd && ACCT_USER_GROUPS+=( lp usb )
+
+	# media-plugins/vdr-remote, _only_ when systemd is installed
+	if use remote; then
+		if use systemd; then
+			ACCT_USER_GROUPS+=( input )
+		else
+			einfo "use-flag remote has no effect on systemd systems"
+		fi
+	fi
+
+	# media-plugins/vdr-serial: add group to access /dev/ttyS*
+	# on systemd systems: add "dialout"
+	# non-systemd systems: add "uucp"
+	if use serial; then
+		if use systemd; then
+			ACCT_USER_GROUPS+=( dialout )
+		else
+			ACCT_USER_GROUPS+=( uucp )
+		fi
+	fi
+}
+
+pkg_preinst() {
+	# if useflag legacy-homedir is _not_ set, check if user vdr exists and what his homedir is
+	if ! use legacy-homedir; then
+		local EXISTING_HOME=$(egethome vdr)
+		if [[ "${EXISTING_HOME}" = "/var/vdr" ]]; then
+			ewarn "The user \"vdr\" exists on this system, his current home directory is \"/var/vdr\""
+			ewarn "The new default home directory for user vdr is \"/var/lib/vdr\""
+			ewarn "You have three options to continue:"
+			ewarn " - set USE=legacy-homedir for ${CATEGORY}/${PN} to continue to use /var/vdr"
+			ewarn " - move /var/vdr to /var/lib/vdr manually and repeat to install ${CATEGORY}/${PN}"
+			ewarn " - move /var/vdr to /var/vdr.old or anywhere else (to keep it as your backup), repeat to"
+			ewarn "   install ${CATEGORY}/${PN} and let the installation create a fresh /var/lib/vdr"
+			ewarn "the emerge will stop here."
+			die "user action required"
+		fi
+	fi
+}