[PATCH spice-streaming-agent 5/5] Provide helper to give information to daemon

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This is required so the daemon can manage the various sessions.

Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
---
 data/spice-streaming.desktop.in |  3 +--
 spice-streaming-agent.spec.in   |  1 +
 src/Makefile.am                 |  5 +++++
 src/spice-streaming-helper      | 24 ++++++++++++++++++++++++
 4 files changed, 31 insertions(+), 2 deletions(-)
 create mode 100755 src/spice-streaming-helper

diff --git a/data/spice-streaming.desktop.in b/data/spice-streaming.desktop.in
index dcb30a3..5e4e863 100644
--- a/data/spice-streaming.desktop.in
+++ b/data/spice-streaming.desktop.in
@@ -1,8 +1,7 @@
 [Desktop Entry]
 Name=SPICE Streaming Agent
 Comment=Agent for Streaming the framebuffer to Spice
-Exec=@BINDIR@/spice-streaming-agent
-#TryExec=/usr/bin/spice-streaming-agent
+Exec=@BINDIR@/spice-streaming-helper
 Terminal=false
 Type=Application
 Categories=
diff --git a/spice-streaming-agent.spec.in b/spice-streaming-agent.spec.in
index eef8f90..54a3598 100644
--- a/spice-streaming-agent.spec.in
+++ b/spice-streaming-agent.spec.in
@@ -54,6 +54,7 @@ fi
 %doc COPYING ChangeLog README
 %{_udevrulesdir}/90-spice-guest-streaming.rules
 %{_bindir}/spice-streaming-agent
+%{_bindir}/spice-streaming-helper
 %{_sysconfdir}/xdg/autostart/spice-streaming.desktop
 %{_datadir}/gdm/greeter/autostart/spice-streaming.desktop
 /usr/lib/systemd/system/spice-streaming-agent.socket
diff --git a/src/Makefile.am b/src/Makefile.am
index d2f8a47..9e9c7e7 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -5,6 +5,7 @@
 
 NULL =
 SUBDIRS = . unittests
+EXTRA_DIST =
 
 AM_CPPFLAGS = \
 	-DSPICE_STREAMING_AGENT_PROGRAM \
@@ -61,3 +62,7 @@ spice_streaming_agent_SOURCES = \
 	daemon.cpp \
 	daemon.h \
 	$(NULL)
+
+helperdir = $(bindir)
+helper_SCRIPTS = spice-streaming-helper
+EXTRA_DIST += spice-streaming-helper
diff --git a/src/spice-streaming-helper b/src/spice-streaming-helper
new file mode 100755
index 0000000..beba559
--- /dev/null
+++ b/src/spice-streaming-helper
@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+import os
+import socket
+import sys
+import struct
+
+sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+
+server_address = "\0spice-streaming-agent-daemon"
+def code(var, type):
+    val = os.environ.get(var, '').encode('utf-8')
+    return struct.pack('BB', type, len(val)) + val
+
+display = code('DISPLAY', 1)
+xauthority = code('XAUTHORITY', 2)
+
+try:
+    sock.connect(server_address)
+    data = struct.pack('B', 1) + display + xauthority
+    sock.send(data)
+    sock.recv(10)
+except socket.error as msg:
+    print(msg, file=sys.stderr)
+    sys.exit(1)
-- 
2.14.3

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