neighbor/upnp: UPnP media server discovery

Makefile.am

@@ -436,6 +436,15 @@ NEIGHBOR_LIBS = \
 	$(SMBCLIENT_LIBS) \
 	libneighbor.a
 
+if HAVE_LIBUPNP
+libneighbor_a_SOURCES += \
+	$(UPNP_SOURCES) \
+	src/neighbor/plugins/UpnpNeighborPlugin.cxx src/neighbor/plugins/UpnpNeighborPlugin.hxx
+NEIGHBOR_LIBS += \
+	$(EXPAT_LIBS) \
+	$(UPNP_LIBS)
+endif
+
 endif
 
 # database plugins
@@ -1323,10 +1332,14 @@ if ENABLE_NEIGHBOR_PLUGINS
 
 test_run_neighbor_explorer_SOURCES = \
 	src/Log.cxx src/LogBackend.cxx \
+	src/IOThread.cxx \
 	test/run_neighbor_explorer.cxx
 test_run_neighbor_explorer_LDADD = \
 	$(GLIB_LIBS) \
 	$(NEIGHBOR_LIBS) \
+	$(INPUT_LIBS) \
+	$(ARCHIVE_LIBS) \
+	libtag.a \
 	libconf.a \
 	libevent.a \
 	libfs.a \
@@ -1334,6 +1347,16 @@ test_run_neighbor_explorer_LDADD = \
 	libthread.a \
 	libutil.a
 
+if HAVE_LIBUPNP
+test_run_neighbor_explorer_SOURCES += src/lib/expat/ExpatParser.cxx
+endif
+
+if ENABLE_DESPOTIFY
+test_run_neighbor_explorer_SOURCES += \
+	src/lib/despotify/DespotifyUtils.cxx \
+	src/lib/despotify/DespotifyUtils.hxx
+endif
+
 endif
 
 if ENABLE_ARCHIVE

configure.ac

@@ -897,6 +897,9 @@ if test x$enable_neighbor_plugins = xauto; then
 	if test x$enable_smbclient = xyes; then
 		enable_neighbor_plugins=yes
 	fi
+	if test x$enable_upnp = xyes; then
+		enable_neighbor_plugins=yes
+	fi
 fi
 
 if test x$enable_neighbor_plugins = xyes; then

src/lib/upnp/ContentDirectoryService.hxx

@@ -121,6 +121,11 @@ public:
 				   std::list<std::string> &result,
 				   Error &error) const;
 
+	gcc_pure
+	std::string GetURI() const {
+		return "upnp://" + m_deviceId + "/" + m_serviceType;
+	}
+
 	/** Retrieve the "friendly name" for this server, useful for display. */
 	const char *getFriendlyName() const {
 		return m_friendlyName.c_str();

src/neighbor/Registry.cxx

@@ -21,12 +21,16 @@
 #include "Registry.hxx"
 #include "NeighborPlugin.hxx"
 #include "plugins/SmbclientNeighborPlugin.hxx"
+#include "plugins/UpnpNeighborPlugin.hxx"
 
 #include <string.h>
 
 const NeighborPlugin *const neighbor_plugins[] = {
 #ifdef ENABLE_SMBCLIENT
 	&smbclient_neighbor_plugin,
+#endif
+#ifdef HAVE_LIBUPNP
+	&upnp_neighbor_plugin,
 #endif
 	nullptr
 };

src/neighbor/plugins/UpnpNeighborPlugin.cxx

@@ -0,0 +1,139 @@
+/*
+ * 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 "UpnpNeighborPlugin.hxx"
+#include "lib/upnp/Domain.hxx"
+#include "lib/upnp/ClientInit.hxx"
+#include "lib/upnp/Discovery.hxx"
+#include "lib/upnp/ContentDirectoryService.hxx"
+#include "neighbor/NeighborPlugin.hxx"
+#include "neighbor/Explorer.hxx"
+#include "neighbor/Listener.hxx"
+#include "neighbor/Info.hxx"
+#include "Log.hxx"
+
+class UpnpNeighborExplorer final
+	: public NeighborExplorer, UPnPDiscoveryListener {
+	struct Server {
+		std::string name, comment;
+
+		bool alive;
+
+		Server(std::string &&_name, std::string &&_comment)
+			:name(std::move(_name)), comment(std::move(_comment)),
+			 alive(true) {}
+		Server(const Server &) = delete;
+
+		gcc_pure
+		bool operator==(const Server &other) const {
+			return name == other.name;
+		}
+
+		gcc_pure
+		NeighborInfo Export() const {
+			return { "smb://" + name + "/", comment };
+		}
+	};
+
+	UPnPDeviceDirectory *discovery;
+
+public:
+	UpnpNeighborExplorer(NeighborListener &_listener)
+		:NeighborExplorer(_listener) {}
+
+	/* virtual methods from class NeighborExplorer */
+	virtual bool Open(Error &error) override;
+	virtual void Close() override;
+	virtual List GetList() const override;
+
+private:
+	/* virtual methods from class UPnPDiscoveryListener */
+	virtual void FoundUPnP(const ContentDirectoryService &service) override;
+	virtual void LostUPnP(const ContentDirectoryService &service) override;
+};
+
+bool
+UpnpNeighborExplorer::Open(Error &error)
+{
+	UpnpClient_Handle handle;
+	if (!UpnpClientGlobalInit(handle, error))
+		return false;
+
+	discovery = new UPnPDeviceDirectory(handle, this);
+	if (!discovery->Start(error)) {
+		delete discovery;
+		UpnpClientGlobalFinish();
+		return false;
+	}
+
+	return true;
+}
+
+void
+UpnpNeighborExplorer::Close()
+{
+	delete discovery;
+	UpnpClientGlobalFinish();
+}
+
+NeighborExplorer::List
+UpnpNeighborExplorer::GetList() const
+{
+	std::vector<ContentDirectoryService> tmp;
+
+	{
+		Error error;
+		if (!discovery->getDirServices(tmp, error))
+			LogError(error);
+	}
+
+	List result;
+	for (const auto &i : tmp)
+		result.emplace_front(i.GetURI(), i.getFriendlyName());
+	return result;
+}
+
+void
+UpnpNeighborExplorer::FoundUPnP(const ContentDirectoryService &service)
+{
+	const NeighborInfo n(service.GetURI(), service.getFriendlyName());
+	listener.FoundNeighbor(n);
+}
+
+void
+UpnpNeighborExplorer::LostUPnP(const ContentDirectoryService &service)
+{
+	const NeighborInfo n(service.GetURI(), service.getFriendlyName());
+	listener.LostNeighbor(n);
+}
+
+static NeighborExplorer *
+upnp_neighbor_create(gcc_unused EventLoop &loop,
+		     NeighborListener &listener,
+		     gcc_unused const config_param &param,
+		     gcc_unused Error &error)
+{
+	return new UpnpNeighborExplorer(listener);
+}
+
+const NeighborPlugin upnp_neighbor_plugin = {
+	"upnp",
+	upnp_neighbor_create,
+};

src/neighbor/plugins/UpnpNeighborPlugin.hxx

@@ -0,0 +1,27 @@
+/*
+ * 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.
+ */
+
+#ifndef MPD_NEIGHBOR_UPNP_HXX
+#define MPD_NEIGHBOR_UPNP_HXX
+
+struct NeighborPlugin;
+
+extern const NeighborPlugin upnp_neighbor_plugin;
+
+#endif