Move engine side OSC and HTTP stuff to separate modules.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@3576 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 228 insertions, 0 deletions

diff --git a/src/http/HTTPEngineReceiver.cpp b/src/http/HTTPEngineReceiver.cpp
new file mode 100644
index 00000000..2f39ee9c
--- /dev/null
+++ b/src/http/HTTPEngineReceiver.cpp
@@ -0,0 +1,228 @@
+/* This file is part of Ingen.
+ * Copyright 2007-2011 David Robillard <http://drobilla.net>
+ *
+ * Ingen 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.
+ *
+ * Ingen 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 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
+ */
+
+#include <cstdio>
+#include <cstdlib>
+#include <string>
+
+#include <boost/format.hpp>
+
+#include <libsoup/soup.h>
+
+#include "raul/SharedPtr.hpp"
+#include "raul/log.hpp"
+
+#include "ingen/ClientInterface.hpp"
+#include "ingen/ServerInterface.hpp"
+#include "ingen/serialisation/Parser.hpp"
+#include "ingen/serialisation/Serialiser.hpp"
+#include "ingen/shared/Module.hpp"
+#include "ingen/shared/Store.hpp"
+
+#include "../server/ClientBroadcaster.hpp"
+#include "../server/Engine.hpp"
+
+#include "HTTPClientSender.hpp"
+#include "HTTPEngineReceiver.hpp"
+
+#define LOG(s) s << "[HTTPEngineReceiver] "
+
+using namespace std;
+using namespace Raul;
+
+namespace Ingen {
+
+using namespace Serialisation;
+
+namespace Server {
+
+HTTPEngineReceiver::HTTPEngineReceiver(Engine&                    engine,
+                                       SharedPtr<ServerInterface> interface,
+                                       uint16_t                   port)
+	: _engine(engine)
+	, _interface(interface)
+	, _server(soup_server_new(SOUP_SERVER_PORT, port, NULL))
+{
+	_receive_thread = new ReceiveThread(*this);
+
+	soup_server_add_handler(_server, NULL, message_callback, this, NULL);
+
+	LOG(info) << "Started HTTP server on port " << soup_server_get_port(_server) << endl;
+
+	if (!engine.world()->parser() || !engine.world()->serialiser())
+		engine.world()->load_module("serialisation");
+
+	_receive_thread->set_name("HTTPEngineReceiver Listener");
+	_receive_thread->start();
+}
+
+HTTPEngineReceiver::~HTTPEngineReceiver()
+{
+	_receive_thread->stop();
+	delete _receive_thread;
+
+	if (_server)  {
+		soup_server_quit(_server);
+		_server = NULL;
+	}
+}
+
+void
+HTTPEngineReceiver::message_callback(SoupServer*        server,
+                                     SoupMessage*       msg,
+                                     const char*        path_str,
+                                     GHashTable*        query,
+                                     SoupClientContext* client,
+                                     void*              data)
+{
+	HTTPEngineReceiver*  me        = (HTTPEngineReceiver*)data;
+	ServerInterface*     interface = me->_interface.get();
+
+	using namespace Ingen::Shared;
+
+	SharedPtr<Store> store = me->_engine.world()->store();
+	if (!store) {
+		soup_message_set_status(msg, SOUP_STATUS_INTERNAL_SERVER_ERROR);
+		return;
+	}
+
+	string path = path_str;
+	if (path[path.length() - 1] == '/') {
+		path = path.substr(0, path.length()-1);
+	}
+
+	SharedPtr<Serialiser> serialiser = me->_engine.world()->serialiser();
+
+	const string base_uri  = "path:/";
+	const char*  mime_type = "text/plain";
+
+	// Special GET paths
+	if (msg->method == SOUP_METHOD_GET) {
+		if (path == Path::root().str() || path.empty()) {
+			const string r = string("@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .\n")
+				.append("\n<> rdfs:seeAlso <plugins> ;")
+				.append("\n   rdfs:seeAlso <stream>  ;")
+				.append("\n   rdfs:seeAlso <patch>   .");
+			soup_message_set_status(msg, SOUP_STATUS_OK);
+			soup_message_set_response(msg, mime_type, SOUP_MEMORY_COPY, r.c_str(), r.length());
+			return;
+
+		} else if (msg->method == SOUP_METHOD_GET && path.substr(0, 8) == "/plugins") {
+			// FIXME: kludge
+			#if 0
+			interface->get("ingen:plugins");
+			me->_receive_thread->whip();
+
+			serialiser->start_to_string("/", base_uri);
+			for (NodeFactory::Plugins::const_iterator p = me->_engine.node_factory()->plugins().begin();
+					p != me->_engine.node_factory()->plugins().end(); ++p)
+				serialiser->serialise_plugin(*(Shared::Plugin*)p->second);
+			const string r = serialiser->finish();
+			soup_message_set_status(msg, SOUP_STATUS_OK);
+			soup_message_set_response(msg, mime_type, SOUP_MEMORY_COPY, r.c_str(), r.length());
+			#endif
+			return;
+
+		} else if (path.substr(0, 6) == "/patch") {
+			path = '/' + path.substr(6);
+			if (path.substr(0, 2) == "//")
+				path = path.substr(1);
+
+		} else if (path.substr(0, 7) == "/stream") {
+			HTTPClientSender* client = new HTTPClientSender(me->_engine);
+			interface->register_client(client);
+
+			// Respond with port number of stream for client
+			const int port = client->listen_port();
+			char buf[32];
+			snprintf(buf, sizeof(buf), "%d", port);
+			soup_message_set_status(msg, SOUP_STATUS_OK);
+			soup_message_set_response(msg, mime_type, SOUP_MEMORY_COPY, buf, strlen(buf));
+			return;
+		}
+	}
+
+	if (!Path::is_valid(path)) {
+		LOG(error) << "Bad HTTP path: " << path << endl;
+		soup_message_set_status(msg, SOUP_STATUS_BAD_REQUEST);
+		const string& err = (boost::format("Bad path: %1%") % path).str();
+		soup_message_set_response(msg, "text/plain", SOUP_MEMORY_COPY,
+				err.c_str(), err.length());
+		return;
+	}
+
+	if (msg->method == SOUP_METHOD_GET) {
+		Glib::RWLock::ReaderLock lock(store->lock());
+
+		// Find object
+		Store::const_iterator start = store->find(path);
+		if (start == store->end()) {
+			soup_message_set_status(msg, SOUP_STATUS_NOT_FOUND);
+			const string& err = (boost::format("No such object: %1%") % path).str();
+			soup_message_set_response(msg, "text/plain", SOUP_MEMORY_COPY,
+					err.c_str(), err.length());
+			return;
+		}
+
+		// Get serialiser
+		SharedPtr<Serialiser> serialiser = me->_engine.world()->serialiser();
+		if (!serialiser) {
+			soup_message_set_status(msg, SOUP_STATUS_INTERNAL_SERVER_ERROR);
+			soup_message_set_response(msg, "text/plain", SOUP_MEMORY_STATIC,
+					"No serialiser available\n", 24);
+			return;
+		}
+
+		// Serialise object
+		const string response = serialiser->to_string(start->second,
+				"http://localhost:16180/patch", GraphObject::Properties());
+
+		soup_message_set_status(msg, SOUP_STATUS_OK);
+		soup_message_set_response(msg, mime_type, SOUP_MEMORY_COPY,
+				response.c_str(), response.length());
+
+	} else if (msg->method == SOUP_METHOD_PUT) {
+		Glib::RWLock::WriterLock lock(store->lock());
+
+		// Get parser
+		SharedPtr<Parser> parser = me->_engine.world()->parser();
+		if (!parser) {
+			soup_message_set_status(msg, SOUP_STATUS_INTERNAL_SERVER_ERROR);
+			return;
+		}
+
+		parser->parse_string(me->_engine.world(), interface, msg->request_body->data, base_uri);
+		soup_message_set_status(msg, SOUP_STATUS_OK);
+
+	} else if (msg->method == SOUP_METHOD_DELETE) {
+		interface->del(path);
+		soup_message_set_status(msg, SOUP_STATUS_OK);
+
+	} else {
+		soup_message_set_status(msg, SOUP_STATUS_NOT_IMPLEMENTED);
+	}
+}
+
+void
+HTTPEngineReceiver::ReceiveThread::_run()
+{
+	soup_server_run(_receiver._server);
+}
+
+} // namespace Server
+} // namespace Ingen
+