Add a CYGWIN installer.

Makefile.am

@@ -163,12 +163,20 @@ if INSTALL_CONFIG_FILES
 	cp scripts/shairport-sync.conf $(DESTDIR)$(sysconfdir)/shairport-sync.conf.sample
 	[ -f $(DESTDIR)$(sysconfdir)/shairport-sync.conf ] || cp scripts/shairport-sync.conf $(DESTDIR)$(sysconfdir)/shairport-sync.conf
 if USE_DBUS
+if INSTALL_CYGWIN_SERVICE
+	cp scripts/shairport-sync-dbus-policy-cygwin.conf $(DESTDIR)$(sysconfdir)/dbus-1/system.d/shairport-sync-dbus.conf
+else
 	cp scripts/shairport-sync-dbus-policy.conf $(DESTDIR)$(sysconfdir)/dbus-1/system.d/shairport-sync-dbus.conf
 endif
+endif
 if USE_MPRIS
+if INSTALL_CYGWIN_SERVICE
+	cp scripts/shairport-sync-mpris-policy-cygwin.conf $(DESTDIR)$(sysconfdir)/dbus-1/system.d/shairport-sync-dbus.conf
+else
 	cp scripts/shairport-sync-mpris-policy.conf $(DESTDIR)$(sysconfdir)/dbus-1/system.d/shairport-sync-mpris.conf
 endif
 endif
+endif
 if INSTALL_SYSTEMV
 	getent group shairport-sync &>/dev/null || groupadd -r shairport-sync >/dev/null
 	getent passwd shairport-sync &> /dev/null || useradd -r -M -g shairport-sync -s /usr/bin/nologin -G audio shairport-sync >/dev/null
@@ -189,3 +197,6 @@ if INSTALL_FREEBSD_SERVICE
 	[ -f /usr/local/etc/rc.d/shairport_sync ] || cp scripts/shairport-sync.freebsd /usr/local/etc/rc.d/shairport_sync
 	chmod 555 /usr/local/etc/rc.d/shairport_sync 
 endif
+if INSTALL_CYGWIN_SERVICE
+	cp scripts/shairport-sync-config /usr/local/bin
+endif

configure.ac

@@ -115,6 +115,10 @@ AC_ARG_WITH([freebsd-service],
 [  --with-freebsd-service = install a FreeBSD startup script during a make install], , )
 AM_CONDITIONAL([INSTALL_FREEBSD_SERVICE], [test "x$with_freebsd_service" = "xyes"])
 
+AC_ARG_WITH([cygwin-service],
+[  --with-cygwin-service = install a CYGWIN config script during a make install], , )
+AM_CONDITIONAL([INSTALL_CYGWIN_SERVICE], [test "x$with_cygwin_service" = "xyes"])
+
 AC_ARG_WITH([external-mdns],[  --with-external-mdns = support the use of 'avahi-publish-service' or 'mDNSPublish' to advertise the service on Bonjour/ZeroConf ],[ AC_MSG_RESULT(>>Including external mdns support)  AC_DEFINE([CONFIG_EXTERNAL_MDNS], 1, [Needed by the compiler.]) ], )
 AM_CONDITIONAL([USE_EXTERNAL_MDNS], [test "x$with_external_mdns" = "xyes" ])
 

scripts/shairport-sync-config

@@ -0,0 +1,169 @@
+#!/bin/sh
+#
+# shairport-sync-config, Copyright 2019 Mike Brady
+#
+# Based, with thanks, on:
+# avahi-daemon-config, Copyright 2011 Yaakov Selkowitz
+#
+# This file is part of the Cygwin port of shairport-sync.
+
+# ======================================================================
+# Initialization
+# ======================================================================
+PROGNAME=$(basename $0)
+_tdir=$(dirname $0)
+PROGDIR=$(cd $_tdir && pwd)
+
+CSIH_SCRIPT=/usr/share/csih/cygwin-service-installation-helper.sh
+
+# Subdirectory where the new package is being installed
+PREFIX=/usr/local/bin
+
+# Directory where the config files are stored
+SYSCONFDIR=/etc
+LOGDIR=/var/log
+SOCKDIR=/var/run
+
+source ${CSIH_SCRIPT}
+
+# ======================================================================
+# Routine: install_service
+#   Install shairport-sync as a service
+# ======================================================================
+install_service() {
+
+  if csih_is_nt
+  then
+
+    # Check if shairport-sync is installed and remove on user request.
+    if cygrunsrv -Q shairport-sync > /dev/null 2>&1
+    then
+      csih_warning "The shairport-sync service is already installed."
+      echo
+      if csih_request "Do you want to reinstall it with different args?"
+      then
+        cygrunsrv -E shairport-sync
+        cygrunsrv -R shairport-sync
+      fi
+    fi
+
+    # Install shairport-sync service if it is not already installed
+    if ! cygrunsrv -Q shairport-sync > /dev/null 2>&1
+    then
+      echo
+      csih_warning "The following function requires administrator privileges!"
+      if csih_request "Do you want to install shairport-sync as a service?"
+      then
+        if cygrunsrv -I shairport-sync --disp "CYGWIN Shairport Sync" --desc "AirPlay Audio. Use your computer's speakers or headphones to listen to audio from your iOS devices or other AirPlay sources on your network." --path $PREFIX/shairport-sync --dep avahi-daemon --dep messagebus
+        then
+	  echo
+	  csih_inform "The shairport-sync service has been installed under the LocalSystem"
+	  csih_inform "account (also known as SYSTEM). To start the service now, call"
+          csih_inform "\`net start shairport-sync' or \`cygrunsrv -S shairport-sync'. Otherwise,"
+          csih_inform "it will start automatically after the next reboot."
+	  echo
+	  csih_inform "Check ${SYSCONFDIR}/shairport-sync.conf first, if it suits your needs."
+        fi
+      fi # user allowed us to install shairport-sync
+    fi # shairport-sync already installed
+  fi # csih_is_nt
+} # --- End of install_service --- #
+
+
+# ======================================================================
+# Main Entry Point
+# ======================================================================
+
+
+# Check how the script has been started.  If
+#   (1) it has been started by giving the full path and
+#       that path is /etc/postinstall, OR
+#   (2) Otherwise, if the environment variable
+#       CONFIG_AUTO_ANSWER_NO is set
+# then set auto_answer to "no".  This allows automatic
+# creation of the config files in /etc w/o overwriting
+# them if they already exist.  In both cases, color
+# escape sequences are suppressed, so as to prevent
+# cluttering setup's logfiles.
+if [ "$PROGDIR" = "/etc/postinstall" ]
+then
+  csih_auto_answer="no"
+  csih_disable_color
+fi
+if [ -n "${CONFIG_AUTO_ANSWER_NO}" ]
+then
+  csih_auto_answer="no"
+  csih_disable_color
+fi
+
+
+# ======================================================================
+# Parse options
+# ======================================================================
+while :
+do
+  case $# in
+  0)
+    break
+    ;;
+  esac
+
+  option=$1
+  shift
+
+  case "$option" in
+  -d | --debug )
+    set -x
+    csih_trace_on
+    ;;
+
+  -y | --yes )
+    csih_auto_answer=yes
+    ;;
+
+  -n | --no )
+    csih_auto_answer=no
+    ;;
+
+  *)
+    echo "usage: ${PROGNAME} [OPTION]..."
+    echo
+    echo "This script creates a basic shairport-sync configuration."
+    echo
+    echo "Options:"
+    echo "    --debug  -d     Enable shell's debug output."
+    echo "    --yes    -y     Answer all questions with \"yes\" automatically."
+    echo "    --no     -n     Answer all questions with \"no\" automatically."
+    echo
+    exit 1
+    ;;
+
+  esac
+done
+
+# ======================================================================
+# Action!
+# ======================================================================
+
+# Check for ${SYSCONFDIR} directory
+csih_make_dir "${SYSCONFDIR}" "Cannot create global configuration files."
+chmod 775 "${SYSCONFDIR}"
+setfacl -m u:system:rwx "${SYSCONFDIR}"
+
+# Check for ${LOGDIR} directory
+csih_make_dir "${LOGDIR}" "Syslogging using shairport-sync will not work."
+chmod 775 "${LOGDIR}"
+setfacl -m u:system:rwx "${LOGDIR}"
+
+# Check for ${SOCKDIR} directory
+csih_make_dir "${SOCKDIR}" "SOCKET files of running processes will not be created."
+chmod 775 "${SOCKDIR}"
+setfacl -m u:system:rwx "${SOCKDIR}"
+
+# maybe: csih_auto_answer=no will skip,
+# interactive user will get a chance to override
+install_service
+
+
+echo
+echo "Configuration finished. Have fun!"

scripts/shairport-sync-dbus-policy-cygwin.conf

@@ -0,0 +1,18 @@
+<!-- initial version, based on /etc/dbus-1/system.d/avahi-dbus.conf, with thanks -->
+<!DOCTYPE busconfig PUBLIC
+          "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
+          "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
+<busconfig>
+
+  <!-- Only user SYSTEM can own the Shairport Sync service -->
+  <policy user="SYSTEM">
+    <allow own="org.gnome.ShairportSync"/>
+  </policy>
+
+  <!-- Allow anyone to invoke methods on Shairport Sync server -->
+  <policy context="default">
+    <allow send_destination="org.gnome.ShairportSync"/>
+    <allow receive_sender="org.gnome.ShairportSync"/>
+  </policy>
+
+</busconfig>

scripts/shairport-sync-mpris-policy-cygwin.conf

@@ -0,0 +1,18 @@
+<!-- initial version, based on /etc/dbus-1/system.d/avahi-dbus.conf, with thanks -->
+<!DOCTYPE busconfig PUBLIC
+          "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
+          "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
+<busconfig>
+
+  <!-- Only user "SYSTEM" can own the Shairport Sync MPRIS service -->
+  <policy user="SYSTEM">
+    <allow own="org.mpris.MediaPlayer2.ShairportSync"/>
+  </policy>
+
+  <!-- Allow anyone to invoke methods on Shairport Sync MPRIS server -->
+  <policy context="default">
+     <allow send_destination="org.mpris.MediaPlayer2.ShairportSync"/>
+    <allow receive_sender="org.mpris.MediaPlayer2.ShairportSync"/>
+  </policy>
+
+</busconfig>