Adding aur/knockd as a user requested the package

aur/knockd/PKGBUILD

@@ -0,0 +1,39 @@
+# $Id: PKGBUILD 20410 2008-12-03 09:44:51Z tom $
+# Maintainer: Mike Sampson <mike at sambodata dot com>
+# Contriburor: Steven <steven at stebalien dot com>
+# Contributor: Aaron Griffin <aaron@archlinux.org>
+# Contributor: judd <jvinet@zeroflux.org>
+
+pkgname=knockd
+pkgver=0.5
+pkgrel=10
+pkgdesc="A simple port-knocking daemon"
+arch=('i686' 'x86_64')
+url="http://www.zeroflux.org/projects/knock"
+license=(GPL)
+depends=('libpcap>=1.0.0')
+backup=('etc/knockd.conf')
+source=(http://www.zeroflux.org/proj/knock/files/knock-$pkgver.tar.gz
+        knockd knockd.logrotate knockd.service limits.h.patch)
+
+md5sums=('ca09d61458974cff90a700aba6120891'
+         '72302d899887996694586c3d479de245'
+         '56a4113ec89ba2e96f79ab23c914d52a'
+         '0329ca17267d03f06216d1fe00bd16a9'
+         'e56dc7359f36c3b07da6710c404d671e')
+
+build() {
+  cd "$srcdir/knock-$pkgver"
+  patch -Np0 -i "$srcdir/limits.h.patch"
+  ./configure --prefix=/usr
+  make
+}
+
+package() {
+  cd "$srcdir/knock-$pkgver"
+  make DESTDIR="$pkgdir" MANDIR=/usr/share/man install
+  #install -D -m755 "$srcdir/knockd" "$pkgdir/etc/rc.d/knockd"
+  install -D -m755 "$srcdir/knockd.service" "$pkgdir/usr/lib/systemd/system/knockd.service"
+  install -D -m644 "$srcdir/knockd.logrotate" "$pkgdir/etc/logrotate.d/knockd"
+}
+

aur/knockd/knockd

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+. /etc/rc.conf
+. /etc/rc.d/functions
+
+PID=`pidof -o %PPID /usr/sbin/knockd`
+case "$1" in
+  start)
+    stat_busy "Starting Port-Knocking Daemon"
+    if [ -z "$PID" ]; then 
+       /usr/sbin/knockd -d
+    fi
+    if [ ! -z "$PID" -o $? -gt 0 ]; then
+      stat_fail
+    else
+      add_daemon knockd
+      stat_done
+    fi
+    ;;
+  stop)
+    stat_busy "Stopping Port-Knocking Daemon"
+    [ ! -z "$PID" ]  && kill $PID &> /dev/null
+    if [ $? -gt 0 ]; then
+      stat_fail
+    else
+      rm_daemon knockd
+      stat_done
+    fi
+    ;;
+  restart)
+    $0 stop
+    sleep 1
+    $0 start
+    ;;
+  *)
+    echo "usage: $0 {start|stop|restart}"  
+esac

aur/knockd/knockd.logrotate

@@ -0,0 +1,5 @@
+/var/log/knockd.log {
+   missingok
+   notifempty
+   delaycompress
+}

aur/knockd/knockd.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Port-Knocking Daemon
+After=network.target
+
+[Service]
+ExecStart=/usr/sbin/knockd -d
+Type=forking
+
+[Install]
+WantedBy=multi-user.target

aur/knockd/limits.h.patch

@@ -0,0 +1,10 @@
+--- src/knockd.c.orig	2008-12-03 07:21:14.643255773 +0000
++++ src/knockd.c	2008-12-03 07:24:59.606701396 +0000
+@@ -46,6 +46,7 @@
+ #include <syslog.h>
+ #include <pcap.h>
+ #include <errno.h>
++#include <limits.h>
+ #include "list.h"
+ 
+ static char version[] = "0.5";