app-admin/sshguard: install systemd unit file

Closes: https://bugs.gentoo.org/588726
Package-Manager: Portage-3.0.13, Repoman-3.0.2
Signed-off-by: Yixun Lan <dlan@gentoo.org>

app-admin/sshguard/files/sshguard-2.4.1-conf.patch

@@ -0,0 +1,25 @@
+diff --git a/examples/sshguard.conf.sample b/examples/sshguard.conf.sample
+index 556f1ec..a483b1e 100644
+--- a/examples/sshguard.conf.sample
++++ b/examples/sshguard.conf.sample
+@@ -6,14 +6,18 @@
+ 
+ #### REQUIRED CONFIGURATION ####
+ # Full path to backend executable (required, no default)
+-#BACKEND="/usr/local/libexec/sshg-fw-iptables"
++# Example 1: iptables backend
++#BACKEND="/usr/libexec/sshg-fw-iptables"
++# Example 2: firewalld backend; for firewalld configuration instructions see
++# https://www.ctrl.blog/entry/how-to-sshguard-firewalld.html#sshguard-section-firewalld
++#BACKEND="/usr/libexec/sshg-fw-firewalld"
+ 
+ # Space-separated list of log files to monitor. (optional, no default)
+ #FILES="/var/log/auth.log /var/log/authlog /var/log/maillog"
+ 
+ # Shell command that provides logs on standard output. (optional, no default)
+ # Example 1: ssh and sendmail from systemd journal:
+-#LOGREADER="LANG=C /usr/bin/journalctl -afb -p info -n1 -t sshd -t sendmail -o cat"
++#LOGREADER="LANG=C /bin/journalctl -afb -p info -n1 -t sshd -t sendmail -o cat"
+ # Example 2: ssh from os_log (macOS 10.12+)
+ #LOGREADER="/usr/bin/log stream --style syslog --predicate '(processImagePath contains \"sshd\")'"
+ 

app-admin/sshguard/sshguard-2.4.1-r1.ebuild

@@ -0,0 +1,49 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit systemd
+DESCRIPTION="protects hosts from brute force attacks against ssh"
+HOMEPAGE="https://www.sshguard.net/"
+SRC_URI="mirror://sourceforge/${PN}/${P}.tar.gz"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~x86"
+
+DEPEND="
+	sys-devel/flex
+"
+RDEPEND="
+	virtual/logger
+"
+DOCS=(
+	CHANGELOG.rst
+	CONTRIBUTING.rst
+	README.rst
+	examples/net.sshguard.plist
+	examples/whitelistfile.example
+)
+PATCHES=(
+	"${FILESDIR}"/${PN}-2.4.1-conf.patch
+)
+
+src_prepare() {
+	default
+	sed -i -e "/ExecStartPre/s:/usr/sbin:/sbin:g" \
+		-e "/ExecStart/s:/usr/local/sbin:/usr/sbin:g" \
+		"${S}"/examples/${PN}.service || die
+}
+
+src_install() {
+	default
+
+	newinitd "${FILESDIR}"/${PN}.initd-r2 ${PN}
+	newconfd "${FILESDIR}"/${PN}.confd ${PN}
+
+	insinto /etc
+	newins examples/sshguard.conf.sample sshguard.conf
+
+	systemd_dounit "${S}"/examples/sshguard.service
+}