audio/horgand: License and capability support added.

Signed-off-by: dsomero <xgizzmo@slackbuilds.org>

audio/horgand/README

@@ -4,3 +4,9 @@ types like Electric Pianos, Jazz Guitar, Strings, Brass, Fretless Bass,
 Accordion etc. using low CPU resources.
 
 This requires fltk and jack-audio-connection-kit.
+
+This package uses POSIX filesystem capabilities to execute with
+elevated privileges (required for realtime audio processing). This
+may be considered a security/stability risk. Please read
+http://www.slackbuilds.org/caps/ for more information. To disable
+capabilities, pass SETCAP=no to the script.

audio/horgand/horgand.SlackBuild

@@ -4,9 +4,11 @@
 
 # Written by B. Watson (yalhcru@gmail.com)
 
+# Licensed under the WTFPL. See http://sam.zoy.org/wtfpl/ for details.
+
 PRGNAM=horgand
 VERSION=${VERSION:-1.14}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 
 if [ -z "$ARCH" ]; then
@@ -84,5 +86,13 @@ mkdir -p $PKG/install
 cat $CWD/slack-desc > $PKG/install/slack-desc
 cat $CWD/doinst.sh > $PKG/install/doinst.sh
 
+# Only add capability stuff if not disabled:
+if [ "${SETCAP:-yes}" = "yes" ]; then
+  cat $CWD/setcap.sh >> $PKG/install/doinst.sh
+  # Only allow execution by audio group
+  chown root:audio $PKG/usr/bin/$PRGNAM
+  chmod 0750 $PKG/usr/bin/$PRGNAM
+fi
+
 cd $PKG
 /sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}

audio/horgand/setcap.sh

@@ -0,0 +1 @@
+[ -x /sbin/setcap ] && /sbin/setcap cap_ipc_lock,cap_sys_nice=ep usr/bin/horgand