1 files changed, 157 insertions, 0 deletions
diff --git a/mobicore/MobiCoreDriverLib/Daemon/Server/public/NetlinkServer.h b/mobicore/MobiCoreDriverLib/Daemon/Server/public/NetlinkServer.h
new file mode 100644
index 0000000..f272368
--- /dev/null
+++ b/mobicore/MobiCoreDriverLib/Daemon/Server/public/NetlinkServer.h
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2013 TRUSTONIC LIMITED
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the TRUSTONIC LIMITED nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * Connection server.
+ *
+ * Handles incoming socket connections from clients using the MobiCore driver.
+ *
+ * Iterative socket server using Netlink dgram protocol.
+ */
+#ifndef NETLINKSERVER_H_
+#define NETLINKSERVER_H_
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <linux/netlink.h>
+#include <cstdio>
+#include <map>
+
+#include "NetlinkConnection.h"
+#include "ConnectionHandler.h"
+#include "Server.h"
+
+class NetlinkServer: public Server, public NetlinkConnectionManager
+{
+public:
+    /**
+     * Server contructor.
+     *
+     * @param connectionHanler Connection handler to pass incoming connections to.
+     */
+    NetlinkServer(
+        ConnectionHandler *connectionHandler
+    );
+
+    /**
+     * Server destructor.
+     * All available connections will be terminated. Resources will be freed.
+     */
+    virtual ~NetlinkServer(
+        void
+    );
+
+    /**
+     * Start server and listen for incoming connections.
+     * Implements the central socket server loop. Incoming connections will be stored.
+     */
+    virtual void run(
+        void
+    );
+
+    /**
+     * Remove a connection object from the list of available connections.
+     * Detaching is required for notification connections wich are never used to transfer command
+     * data from TLCs to the driver. If the function succeeds, freeing the connection will no longer
+     * be the server's responsability.
+     *
+     * @param connection The connection object to remove.
+     */
+    virtual void detachConnection(
+        Connection *connection
+    );
+
+private:
+    /**
+     * Handle incomming Netlink message.
+     * It routes the incomming packet to the apropriate connection based on the packet's
+     * session magic.
+     *
+     * @param nlh The netlink message's header + payload
+     */
+    void handleMessage(
+        struct nlmsghdr *nlh
+    );
+
+    /**
+     * Retreive connection based on hash.
+     * Search the peer connections hashmap for a hash and return
+     * the associated Connection object
+     *
+     * @param seq The seq to search
+     * @return The NetlinkConnection object if found or NULL if not found
+     */
+    NetlinkConnection *findConnection(
+        uint64_t hash
+    );
+
+    /**
+     * Insert a connection in the peer connection hashmap
+     * Insert a new connection in the peer connections hashmap. If there is
+     * already such a connection it will be overriden!
+     *
+     * @param seq The seq to use
+     * @param connection The connection object to insert
+     */
+    void insertConnection(
+        uint64_t hash,
+        NetlinkConnection *connection
+    );
+
+    /**
+     * Remove a connection from the peer connections
+     * Remove the connection associated with seq from the peer list.
+     * This doesn't actually free the connection object!
+     * If the seq is invalid nothing happens.
+     *
+     * @param seq The seq to use
+     */
+    void removeConnection(
+        uint64_t hash
+    );
+
+
+    /**
+     * Check for sessions started by applications that died(exited)
+     * Remove the connections to applications that are not active anymore
+     * If the application has died then all the sessions associated with it
+     * should be closed!
+     *
+     */
+    void cleanupConnections(
+        void
+    );
+
+    connectionMap_t peerConnections; /**< Hashmap with connections to clients */
+};
+
+#endif /* SERVER_H_ */
+