6 files changed, 182 insertions, 0 deletions
diff --git a/network/knock/README b/network/knock/README
new file mode 100644
index 0000000000..1af140baea
--- /dev/null
+++ b/network/knock/README
@@ -0,0 +1,10 @@
+Knockd and knock are a port-knock server and client, respectively. Knockd 
+listens to all traffic on an ethernet (or PPP) interface, looking for 
+special "knock" sequences of port-hits. A client makes these port-hits 
+by sending a TCP (or UDP) packet to a port on the server. This port 
+need not be open -- since knockd listens at the link-layer level, it 
+sees all traffic even if it's destined for a closed port. When the 
+server detects a specific sequence of port-hits, it runs a command 
+defined in its configuration file. This can be used to open up holes in 
+a firewall for quick access.
+
diff --git a/network/knock/doinst.sh b/network/knock/doinst.sh
new file mode 100644
index 0000000000..9a247a060b
--- /dev/null
+++ b/network/knock/doinst.sh
@@ -0,0 +1,26 @@
+config() {
+  NEW="$1"
+  OLD="$(dirname $NEW)/$(basename $NEW .new)"
+  # If there's no config file by that name, mv it over:
+  if [ ! -r $OLD ]; then
+    mv $NEW $OLD
+  elif [ "$(cat $OLD | md5sum)" = "$(cat $NEW | md5sum)" ]; then
+    # toss the redundant copy
+    rm $NEW
+  fi
+  # Otherwise, we leave the .new copy for the admin to consider...
+}    
+
+# Keep same permissions on rc.knockd.new as an existing rc.knockd:
+if [ -e etc/rc.d/rc.knockd ]; then
+  cp -a etc/rc.d/rc.knockd etc/rc.d/rc.knockd.new.incoming
+  cat etc/rc.d/rc.knockd.new > etc/rc.d/rc.knockd.new.incoming
+  mv etc/rc.d/rc.knockd.new.incoming etc/rc.d/rc.knockd.new
+else
+  # If rc.knockd does not exist, make the new one executable by default,
+  # which won't matter unless it's called from rc.local anyway
+  chmod 0755 etc/rc.d/rc.knockd.new
+fi   
+
+config etc/rc.d/rc.knockd.new
+config etc/knockd.conf.new
diff --git a/network/knock/knock.SlackBuild b/network/knock/knock.SlackBuild
new file mode 100644
index 0000000000..0e174d9671
--- /dev/null
+++ b/network/knock/knock.SlackBuild
@@ -0,0 +1,78 @@
+#!/bin/sh
+
+# Slackware build script for knock(d)
+
+# Written by Joey Trungale joey@trungale.net
+
+PRGNAM=knock
+VERSION=${VERSION:-0.5}
+ARCH=${ARCH:-i486}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+
+CWD=$(pwd)
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+if [ "$ARCH" = "i486" ]; then
+  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+fi
+
+set -e # Exit on most errors
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM-$VERSION
+tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
+cd $PRGNAM-$VERSION
+chown -R root:root .
+find . \
+ \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
+ -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
+ -exec chmod 644 {} \;
+
+CFLAGS="$SLKCFLAGS" \
+CXXFLAGS="$SLKCFLAGS" \
+./configure \
+  --prefix=/usr \
+  --sysconfdir=/etc \
+  --localstatedir=/var \
+  --mandir=/usr/man
+
+make
+make install DESTDIR=$PKG
+
+( cd $PKG
+  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | \
+    xargs strip --strip-unneeded 2> /dev/null || true
+  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | \
+    xargs strip --strip-unneeded 2> /dev/null
+)
+
+( cd $PKG/usr/man
+  find . -type f -exec gzip -9 {} \;
+  for i in $( find . -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
+)
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a COPYING README ChangeLog TODO $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+cat $PKG/etc/knockd.conf > $PKG/usr/doc/$PRGNAM-$VERSION/knockd.conf
+mv $PKG/etc/knockd.conf $PKG/etc/knockd.conf.new
+
+mkdir -p $PKG/etc/rc.d
+cat $CWD/rc.knockd.new > $PKG/etc/rc.d/rc.knockd.new
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+cat $CWD/doinst.sh > $PKG/install/doinst.sh
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.tgz
diff --git a/network/knock/knock.info b/network/knock/knock.info
new file mode 100644
index 0000000000..c8cb983cb3
--- /dev/null
+++ b/network/knock/knock.info
@@ -0,0 +1,8 @@
+PRGNAM="knock"
+VERSION=".0.5"
+HOMEPAGE="http://www.zeroflux.org"
+DOWNLOAD="http://www.zeroflux.org/proj/knock/files/knock-0.5.tar.gz"
+MD5SUM="ca09d61458974cff90a700aba6120891"
+MAINTAINER="Joey Trungale"
+EMAIL="joey@trungale.net"
+APPROVED="dsomero"
diff --git a/network/knock/rc.knockd.new b/network/knock/rc.knockd.new
new file mode 100644
index 0000000000..5198603ffb
--- /dev/null
+++ b/network/knock/rc.knockd.new
@@ -0,0 +1,41 @@
+#!/bin/sh
+# Start/stop/restart knockd.
+
+# Start knockd:
+knockd_start() {
+  CMDLINE="/usr/sbin/knockd -d"
+  echo -n "Starting knock daemon:  $CMDLINE "
+  $CMDLINE
+  echo
+}
+
+# Stop knockd:
+knockd_stop() {
+  echo -n "Stopping knock daemon..."
+  kill `cat /var/run/knockd.pid`
+  echo
+  sleep 1
+  rm -f /var/run/knockd.pid
+  killall knockd 2> /dev/null
+}
+
+# Restart knockd:
+knockd_restart() {
+  knockd_stop
+  sleep 1
+  knockd_start
+}
+
+case "$1" in
+'start')
+  knockd_start
+  ;;
+'stop')
+  knockd_stop
+  ;;
+'restart')
+  knockd_restart
+  ;;
+*)
+  echo "usage $0 start|stop|restart"
+esac
diff --git a/network/knock/slack-desc b/network/knock/slack-desc
new file mode 100644
index 0000000000..1ba1ec0420
--- /dev/null
+++ b/network/knock/slack-desc
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.  Line
+# up the first '|' above the ':' following the base package name, and the '|' on
+# the right side marks the last column you can put a character in.  You must make
+# exactly 11 lines for the formatting to be correct.  It's also customary to
+# leave one space after the ':'.
+
+     |-----handy-ruler------------------------------------------------------|
+knock: knock (a port-knock server)
+knock: 
+knock: This is a port-knocking server/client.  Port-knocking is a method 
+knock: where a server can sniff one of its interfaces for a special "knock"
+knock: sequence of port-hits.  When detected, it will run a specified event
+knock: bound to that port knock sequence.  These port-hits need not be on 
+knock: open ports, since we use libpcap to sniff the raw interface traffic.
+knock: 
+knock: 
+knock: http://www.zeroflux.org/cgi-bin/cvstrac.cgi/knock/wiki
+knock: