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-rw-r--r--src/lib/upnp/ClientInit.cxx93
1 files changed, 93 insertions, 0 deletions
diff --git a/src/lib/upnp/ClientInit.cxx b/src/lib/upnp/ClientInit.cxx
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+++ b/src/lib/upnp/ClientInit.cxx
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+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "ClientInit.hxx"
+#include "Init.hxx"
+#include "Callback.hxx"
+#include "Domain.hxx"
+#include "thread/Mutex.hxx"
+#include "util/Error.hxx"
+
+#include <upnp/upnptools.h>
+
+static Mutex upnp_client_init_mutex;
+static unsigned upnp_client_ref;
+static UpnpClient_Handle upnp_client_handle;
+
+static int
+UpnpClientCallback(Upnp_EventType et, void *evp, void *cookie)
+{
+ if (cookie == nullptr)
+ /* this is the cookie passed to UpnpRegisterClient();
+ but can this ever happen? Will libupnp ever invoke
+ the registered callback without that cookie? */
+ return UPNP_E_SUCCESS;
+
+ UpnpCallback &callback = UpnpCallback::FromUpnpCookie(cookie);
+ return callback.Invoke(et, evp);
+}
+
+static bool
+DoInit(Error &error)
+{
+ auto code = UpnpRegisterClient(UpnpClientCallback, nullptr,
+ &upnp_client_handle);
+ if (code != UPNP_E_SUCCESS) {
+ error.Format(upnp_domain, code,
+ "UpnpRegisterClient() failed: %s",
+ UpnpGetErrorMessage(code));
+ return false;
+ }
+
+ return true;
+}
+
+bool
+UpnpClientGlobalInit(UpnpClient_Handle &handle, Error &error)
+{
+ if (!UpnpGlobalInit(error))
+ return false;
+
+ upnp_client_init_mutex.lock();
+ bool success = upnp_client_ref > 0 || DoInit(error);
+ upnp_client_init_mutex.unlock();
+
+ if (success) {
+ ++upnp_client_ref;
+ handle = upnp_client_handle;
+ } else
+ UpnpGlobalFinish();
+
+ return success;
+}
+
+void
+UpnpClientGlobalFinish()
+{
+ upnp_client_init_mutex.lock();
+
+ assert(upnp_client_ref > 0);
+ if (--upnp_client_ref == 0)
+ UpnpUnRegisterClient(upnp_client_handle);
+
+ upnp_client_init_mutex.unlock();
+
+ UpnpGlobalFinish();
+}