pulse: add qrexec services to control audio-input in another VM

Audio VM may not be dom0, so lets allow control it through qrexec

QubesOS/qubes-issues#1590

Makefile

@@ -52,6 +52,8 @@ install:
 	install -D gui-daemon/qubes-guid $(DESTDIR)/usr/bin/qubes-guid
 	install -m 0644 -D gui-daemon/qubes-guid.1 $(DESTDIR)$(MANDIR)/man1/qubes-guid.1
 	install -D pulse/pacat-simple-vchan $(DESTDIR)/usr/bin/pacat-simple-vchan
+	install -D pulse/qubes.AudioInputEnable $(DESTDIR)/etc/qubes-rpc/qubes.AudioInputEnable
+	install -D pulse/qubes.AudioInputDisable $(DESTDIR)/etc/qubes-rpc/qubes.AudioInputDisable
 	install -D shmoverride/X-wrapper-qubes $(DESTDIR)/usr/bin/X-wrapper-qubes
 	install -D shmoverride/shmoverride.so $(DESTDIR)$(LIBDIR)/qubes-gui-daemon/shmoverride.so
 	install -D -m 0644 gui-daemon/guid.conf $(DESTDIR)/etc/qubes/guid.conf

debian/control

@@ -32,6 +32,7 @@ Depends:
  python3,
  qubes-core-qrexec (>= 4.1.5),
  qubes-utils (>= 4.1.4),
+ socat,
  ${shlibs:Depends},
  ${misc:Depends}
 Recommends:

debian/qubes-gui-daemon-pulseaudio.install

@@ -1 +1,3 @@
 usr/bin/pacat-simple-vchan
+etc/qubes-rpc/qubes.AudioInputEnable
+etc/qubes-rpc/qubes.AudioInputDisable

pulse/qubes.AudioInputDisable

@@ -0,0 +1,4 @@
+#!/bin/sh
+[ -n "$1" ] || exit 1
+control_socket="/var/run/qubes/audio-control.$1"
+echo "audio-input 0" | socat -u - "UNIX-CONNECT:$control_socket"

pulse/qubes.AudioInputEnable

@@ -0,0 +1,4 @@
+#!/bin/sh
+[ -n "$1" ] || exit 1
+control_socket="/var/run/qubes/audio-control.$1"
+echo "audio-input 1" | socat -u - "UNIX-CONNECT:$control_socket"

rpm_spec/gui-daemon.spec.in

@@ -41,6 +41,7 @@ Requires:   qubes-utils >= 3.1.0
 Requires:   python%{python3_pkgversion}-pydbus
 Requires:   qubes-core-qrexec >= 4.1.5
 Requires:   qubes-utils >= 4.1.4
+Requires:   socat
 
 BuildRequires:  python%{python3_pkgversion}-devel
 BuildRequires:  pulseaudio-libs-devel
@@ -146,8 +147,8 @@ rm -f %{name}-%{version}
 
 %files -n qubes-audio-daemon
 /usr/bin/pacat-simple-vchan
-/usr/share/dbus-1/interfaces/org.qubesos.Audio.xml
-%config(noreplace) /etc/dbus-1/system.d/org.qubesos.Audio.conf
+/etc/qubes-rpc/qubes.AudioInputEnable
+/etc/qubes-rpc/qubes.AudioInputDisable
 
 %files -n qubes-gui-dom0
 %config(noreplace) %{_sysconfdir}/qubes-rpc/policy/qubes.ClipboardPaste