Add a Linux context manager

This is based on RT Netlink sockets, see rtnetlink(7)

configure.ac

@@ -44,7 +44,7 @@ PKG_CHECK_MODULES(GTHREAD, gthread-2.0)
 
 AC_ARG_WITH([context_manager],
             AS_HELP_STRING(
-                        [--with-context-manager=@<:@network-manager/unix@:>@],
+                        [--with-context-manager=@<:@network-manager/unix/linux@:>@],
                         [Context Manager backend to use]),,
             [with_context_manager="unix"])
 
@@ -54,6 +54,32 @@ AC_MSG_RESULT([${with_context_manager}])
 AM_CONDITIONAL([USE_NETWORK_MANAGER],
                [test "x$with_context_manager" = "xnetwork-manager"])
 
+USE_NETLINK=no
+if test "x$with_context_manager" = "xlinux"; then
+       dnl check for netlink (Linux)
+       AC_CHECK_HEADERS([sys/socket.h linux/rtnetlink.h],
+                        [ USE_NETLINK=yes ],
+                        [ USE_NETLINK=no ],
+                        [ #ifdef HAVE_SYS_SOCKET_H
+                          #include <sys/socket.h>
+                          #endif
+                        ])
+       if test "x$USE_NETLINK" = "xno"
+       then
+               AC_MSG_NOTICE([No rtnetlink found, falling back to unix context
+                              manager])
+       else
+               AC_CHECK_HEADERS([linux/wireless.h], [], [],
+                                [ #ifdef HAVE_SYS_SOCKET_H
+                                  #include <sys/socket.h>
+                                  #endif
+                                ])
+       fi
+fi
+
+AM_CONDITIONAL(USE_NETLINK, test "x$USE_NETLINK" = "xyes")
+AC_SUBST(USE_NETLINK)
+
 # glib-genmarshal
 GLIB_GENMARSHAL=`pkg-config --variable=glib_genmarshal glib-2.0`
 AC_SUBST(GLIB_GENMARSHAL)

libgupnp/Makefile.am

@@ -9,8 +9,18 @@ CONTEXT_MANAGER_IMPL =
 CONTEXT_MANAGER_CFLAGS =
 endif
 
+if USE_NETLINK
+NETLINK_CFLAGS = -DUSE_NETLINK
+CONTEXT_MANAGER_IMPL += \
+			  gupnp-linux-context-manager.c		\
+			  gupnp-linux-context-manager.h
+else
+NETLINK_CFLAGS =
+endif
+
 AM_CFLAGS = $(LIBGUPNP_CFLAGS) \
 	    $(DBUS_GLIB_CFLAGS) \
+	    $(NETLINK_CFLAGS) \
 	    -I$(top_srcdir) \
 	    $(CONTEXT_MANAGER_CFLAGS)
 
@@ -87,6 +97,8 @@ libgupnp_1_0_la_LIBADD = $(LIBGUPNP_LIBS) $(DBUS_GLIB_LIBS) $(LIBCONIC_LIBS)
 EXTRA_DIST = gupnp-marshal.list 	   \
 	     gupnp-network-manager.c   	   \
 	     gupnp-network-manager.h       \
+	     gupnp-linux-context-manager.c \
+	     gupnp-linux-context-manager.h \
 	     gupnp-unix-context-manager.c  \
 	     gupnp-unix-context-manager.h
 

libgupnp/gupnp-context-manager.c

@@ -373,6 +373,9 @@ gupnp_context_manager_new (GMainContext *main_context,
 
         if (gupnp_network_manager_is_available (main_context))
                 impl_type = GUPNP_TYPE_NETWORK_MANAGER;
+#elif USE_NETLINK
+#include "gupnp-linux-context-manager.h"
+        impl_type = GUPNP_TYPE_LINUX_CONTEXT_MANAGER;
 #endif
 
         if (impl_type == G_TYPE_INVALID)

libgupnp/gupnp-linux-context-manager.h

+/*
+ * Copyright (C) 2011 Jens Georg.
+ *
+ * Author: Jens Georg <mail@jensge.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GUPNP_LINUX_CONTEXT_MANAGER_H__
+#define __GUPNP_LINUX_CONTEXT_MANAGER_H__
+
+#include "gupnp-context-manager.h"
+
+G_BEGIN_DECLS
+
+GType
+gupnp_linux_context_manager_get_type (void) G_GNUC_CONST;
+
+#define GUPNP_TYPE_LINUX_CONTEXT_MANAGER \
+                (gupnp_linux_context_manager_get_type ())
+#define GUPNP_LINUX_CONTEXT_MANAGER(obj) \
+                (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
+                 GUPNP_TYPE_LINUX_CONTEXT_MANAGER, \
+                 GUPnPLinuxContextManager))
+#define GUPNP_LINUX_CONTEXT_MANAGER_CLASS(obj) \
+                (G_TYPE_CHECK_CLASS_CAST ((obj), \
+                 GUPNP_TYPE_LINUX_CONTEXT_MANAGER, \
+                 GUPnPLinuxContextManagerClass))
+#define GUPNP_IS_LINUX_CONTEXT_MANAGER(obj) \
+                (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
+                 GUPNP_TYPE_LINUX_CONTEXT_MANAGER))
+#define GUPNP_IS_LINUX_CONTEXT_MANAGER_CLASS(obj) \
+                (G_TYPE_CHECK_CLASS_TYPE ((obj), \
+                 GUPNP_TYPE_LINUX_CONTEXT_MANAGER))
+#define GUPNP_LINUX_CONTEXT_MANAGER_GET_CLASS(obj) \
+                (G_TYPE_INSTANCE_GET_CLASS ((obj), \
+                 GUPNP_TYPE_LINUX_CONTEXT_MANAGER, \
+                 GUPnPLinuxContextManagerClass))
+
+typedef struct _GUPnPLinuxContextManagerPrivate GUPnPLinuxContextManagerPrivate;
+
+typedef struct {
+        GUPnPContextManager parent;
+
+        GUPnPLinuxContextManagerPrivate *priv;
+} GUPnPLinuxContextManager;
+
+typedef struct {
+        GUPnPContextManagerClass parent_class;
+
+        /* future padding */
+        void (* _gupnp_reserved1) (void);
+        void (* _gupnp_reserved2) (void);
+        void (* _gupnp_reserved3) (void);
+        void (* _gupnp_reserved4) (void);
+} GUPnPLinuxContextManagerClass;
+
+G_END_DECLS
+
+#endif /* __GUPNP_LINUX_CONTEXT_MANAGER_H__ */