Add initial work for netlink plugin

4 files changed, 112 insertions, 2 deletions

diff --git a/acinclude.m4 b/acinclude.m4
index 07572bb7..5aed6526 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -138,6 +138,12 @@ AC_DEFUN([AC_PATH_USB], [
 		AC_DEFINE(NEED_USB_INTERRUPT_READ, 1, [Define to 1 if you need the usb_interrupt_read() function.]))
 ])
 
+AC_DEFUN([AC_PATH_NETLINK], [
+	PKG_CHECK_MODULES(NETLINK, libnl-1, netlink_found=yes, netlink_found=no)
+	AC_SUBST(NETLINK_CFLAGS)
+	AC_SUBST(NETLINK_LIBS)
+])
+
 AC_DEFUN([AC_PATH_SNDFILE], [
 	PKG_CHECK_MODULES(SNDFILE, sndfile, sndfile_found=yes, sndfile_found=no)
 	AC_SUBST(SNDFILE_CFLAGS)
@@ -149,6 +155,7 @@ AC_DEFUN([AC_ARG_BLUEZ], [
 	debug_enable=no
 	pie_enable=no
 	sndfile_enable=${sndfile_found}
+	netlink_enable=${netlink_found}
 	usb_enable=${usb_found}
 	alsa_enable=${alsa_found}
 	glib_enable=no
@@ -336,6 +343,7 @@ AC_DEFUN([AC_ARG_BLUEZ], [
 	AC_SUBST([SBC_LIBS], ['$(top_builddir)/sbc/libsbc.la'])
 
 	AM_CONDITIONAL(SNDFILE, test "${sndfile_enable}" = "yes" && test "${sndfile_found}" = "yes")
+	AM_CONDITIONAL(NETLINK, test "${netlink_enable}" = "yes" && test "${netlink_found}" = "yes")
 	AM_CONDITIONAL(USB, test "${usb_enable}" = "yes" && test "${usb_found}" = "yes")
 	AM_CONDITIONAL(SBC, test "${alsa_enable}" = "yes" || test "${gstreamer_enable}" = "yes")
 	AM_CONDITIONAL(ALSA, test "${alsa_enable}" = "yes" && test "${alsa_found}" = "yes")
diff --git a/configure.in b/configure.in
index 824e7a27..3fdde2d9 100644
--- a/configure.in
+++ b/configure.in
@@ -31,6 +31,7 @@ AC_PATH_DBUS
 AC_PATH_ALSA
 AC_PATH_GSTREAMER
 AC_PATH_USB
+AC_PATH_NETLINK
 AC_PATH_SNDFILE
 
 AC_ARG_BLUEZ
diff --git a/plugins/Makefile.am b/plugins/Makefile.am
index 6f07b99a..2a3212e1 100644
--- a/plugins/Makefile.am
+++ b/plugins/Makefile.am
@@ -1,7 +1,13 @@
 
 plugindir = $(libdir)/bluetooth/plugins
 
-plugin_LTLIBRARIES = libstorage.la
+if NETLINK
+netlink_plugins = libnetlink.la
+else
+netlink_plugins =
+endif
+
+plugin_LTLIBRARIES = libstorage.la $(netlink_plugins)
 
 libstorage_la_SOURCES = storage.c
 
@@ -9,16 +15,24 @@ noinst_LTLIBRARIES = libecho.la
 
 libecho_la_SOURCES = echo.c
 
+if NETLINK
+libnetlink_la_SOURCES = netlink.c
+
+libnetlink_la_LIBADD = @NETLINK_LIBS@
+endif
+
 AM_LDFLAGS = -module -avoid-version -no-undefined \
 			-export-symbols-regex bluetooth_plugin_desc
 
-AM_CFLAGS = @BLUEZ_CFLAGS@ @DBUS_CFLAGS@ @GLIB_CFLAGS@ @GDBUS_CFLAGS@
+AM_CFLAGS = @BLUEZ_CFLAGS@ @DBUS_CFLAGS@ @GLIB_CFLAGS@ @GDBUS_CFLAGS@ @NETLINK_CFLAGS@
 
 INCLUDES = -I$(top_srcdir)/common -I$(top_srcdir)/hcid
 
 MAINTAINERCLEANFILES = Makefile.in
 
 all-local:
+	@$(LN_S) -f $(top_srcdir)/plugins/.libs/libstorage.so
+	@$(LN_S) -f $(top_srcdir)/plugins/.libs/libnetlink.so
 	@$(LN_S) -f $(top_srcdir)/input/.libs/libinput.so
 	@$(LN_S) -f $(top_srcdir)/audio/.libs/libaudio.so
 	@$(LN_S) -f $(top_srcdir)/serial/.libs/libserial.so
@@ -29,3 +43,5 @@ clean-local:
 	@rm -f libserial.so
 	@rm -f libaudio.so
 	@rm -f libinput.so
+	@rm -f libnetlink.so
+	@rm -f libstorage.so
diff --git a/plugins/netlink.c b/plugins/netlink.c
new file mode 100644
index 00000000..e1b1bb96
--- /dev/null
+++ b/plugins/netlink.c
@@ -0,0 +1,85 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2004-2008  Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <errno.h>
+
+#include <netlink/netlink.h>
+#include <netlink/genl/genl.h>
+#include <netlink/genl/ctrl.h>
+#include <netlink/genl/family.h>
+
+#include <bluetooth/bluetooth.h>
+
+#include "plugin.h"
+#include "logging.h"
+
+static struct nl_handle *handle;
+static struct nl_cache *cache;
+static struct genl_family *family;
+
+static int netlink_init(void)
+{
+	info("Starting experimental netlink support");
+
+	handle = nl_handle_alloc();
+	if (!handle) {
+		error("Failed to allocate netlink handle");
+		return -ENOMEM;
+	}
+
+	if (genl_connect(handle) < 0) {
+		error("Failed to connect to generic netlink");
+		nl_handle_destroy(handle);
+		return -ENOLINK;
+	}
+
+	cache = genl_ctrl_alloc_cache(handle);
+	if (!cache) {
+		error("Failed to allocate generic netlink cache");
+		return -ENOMEM;
+		nl_handle_destroy(handle);
+	}
+
+	family = genl_ctrl_search_by_name(cache, "bluetooth");
+	if (!family) {
+		error("Failed to find Bluetooth netlink family");
+		nl_cache_free(cache);
+		nl_handle_destroy(handle);
+		return -ENOENT;
+	}
+
+	return 0;
+}
+
+static void netlink_exit(void)
+{
+	nl_handle_destroy(handle);
+	nl_cache_free(cache);
+	nl_handle_destroy(handle);
+}
+
+BLUETOOTH_PLUGIN_DEFINE("netlink", netlink_init, netlink_exit)