dispatcher: expose connection D-Bus path

src/nm-dispatcher.c was passing the connection's D-Bus path to the
dispatcher, which was then ignoring it. Meanwhile,
test-dispatcher-envp was passing a fake D-Bus path with the wrong name
(which didn't actually matter since
nm_dispatcher_utils_construct_envp() ignored it anyway).

Fix it so that the path gets exposed as CONNECTION_DBUS_PATH, and
adjust the tests for that.

callouts/nm-dispatcher-utils.c

@@ -333,7 +333,7 @@ nm_dispatcher_utils_construct_envp (const char *action,
                                     char **out_iface)
 {
 	const char *iface = NULL, *ip_iface = NULL;
-	const char *uuid = NULL, *id = NULL, *path;
+	const char *uuid = NULL, *id = NULL, *path = NULL;
 	const char *filename = NULL;
 	NMDeviceState dev_state = NM_DEVICE_STATE_UNKNOWN;
 	GVariant *value;
@@ -350,10 +350,17 @@ nm_dispatcher_utils_construct_envp (const char *action,
 	if (!strcmp (action, "hostname"))
 		goto done;
 
-	/* config filename */
+	/* Connection properties */
+	if (!g_variant_lookup (connection_props, NMD_CONNECTION_PROPS_PATH, "&o", &path)) {
+		g_warning ("Missing or invalid required value " NMD_CONNECTION_PROPS_PATH "!");
+		return NULL;
+	}
+	items = g_slist_prepend (items, g_strdup_printf ("CONNECTION_DBUS_PATH=%s", path));
+
 	if (g_variant_lookup (connection_props, NMD_CONNECTION_PROPS_FILENAME, "&s", &filename))
 		items = g_slist_prepend (items, g_strdup_printf ("CONNECTION_FILENAME=%s", filename));
 
+
 	/* Canonicalize the VPN interface name; "" is used when passing it through
 	 * D-Bus so make sure that's fixed up here.
 	 */

callouts/tests/dispatcher-down

@@ -14,6 +14,7 @@ path=/org/freedesktop/NetworkManager/Devices/0
 [env]
 PATH=
 CONNECTION_UUID=3fd2a33a-d81b-423f-ae99-e6baba742311
+CONNECTION_DBUS_PATH=/org/freedesktop/NetworkManager/Connections/5
 CONNECTION_ID=Random Connection
 CONNECTION_FILENAME=/callouts/tests/dispatcher-down
 DEVICE_IFACE=wlan0

callouts/tests/dispatcher-up

@@ -33,6 +33,7 @@ domains=hsd1.mn.comcast.net.
 [env]
 PATH=
 CONNECTION_UUID=3fd2a33a-d81b-423f-ae99-e6baba742311
+CONNECTION_DBUS_PATH=/org/freedesktop/NetworkManager/Connections/5
 CONNECTION_ID=Random Connection
 CONNECTION_FILENAME=/callouts/tests/dispatcher-up
 DEVICE_IFACE=wlan0

callouts/tests/dispatcher-vpn-down

@@ -33,6 +33,7 @@ domains=hsd1.mn.comcast.net.
 [env]
 PATH=
 CONNECTION_UUID=355653c0-34d3-4777-ad25-f9a498b7ef8e
+CONNECTION_DBUS_PATH=/org/freedesktop/NetworkManager/Connections/5
 CONNECTION_ID=Random Connection
 CONNECTION_FILENAME=/callouts/tests/dispatcher-vpn-down
 DEVICE_IFACE=wlan0

callouts/tests/dispatcher-vpn-up

@@ -33,6 +33,7 @@ domains=hsd1.mn.comcast.net.
 [env]
 PATH=
 CONNECTION_UUID=355653c0-34d3-4777-ad25-f9a498b7ef8e
+CONNECTION_DBUS_PATH=/org/freedesktop/NetworkManager/Connections/5
 CONNECTION_ID=Random Connection
 CONNECTION_FILENAME=/callouts/tests/dispatcher-vpn-up
 DEVICE_IFACE=wlan0

callouts/tests/test-dispatcher-envp.c

@@ -81,7 +81,7 @@ parse_main (GKeyFile *kf,
 
 	g_variant_builder_init (&props, G_VARIANT_TYPE ("a{sv}"));
 	g_variant_builder_add (&props, "{sv}",
-	                       "connection-path",
+	                       NMD_CONNECTION_PROPS_PATH,
 	                       g_variant_new_object_path ("/org/freedesktop/NetworkManager/Connections/5"));
 	/* Strip out the non-fixed portion of the filename */
 	filename = strstr (filename, "/callouts");

man/NetworkManager.xml

@@ -166,6 +166,12 @@
             The name (ID) of the connection profile.
           </para></listitem>
         </varlistentry>
+        <varlistentry>
+          <term><varname>CONNECTION_DBUS_PATH</varname></term>
+          <listitem><para>
+            The NetworkManager D-Bus path of the connection.
+          </para></listitem>
+        </varlistentry>
         <varlistentry>
           <term><varname>CONNECTION_FILENAME</varname></term>
           <listitem><para>