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Diffstat (limited to 'src/socket/SocketInterface.cpp')
-rw-r--r-- | src/socket/SocketInterface.cpp | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/socket/SocketInterface.cpp b/src/socket/SocketInterface.cpp new file mode 100644 index 00000000..d9994e3e --- /dev/null +++ b/src/socket/SocketInterface.cpp @@ -0,0 +1,149 @@ +/* + This file is part of Ingen. + Copyright 2007-2012 David Robillard <http://drobilla.net/> + + Ingen is free software: you can redistribute it and/or modify it under the + terms of the GNU Affero General Public License as published by the Free + Software Foundation, either version 3 of the License, or 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 Affero General Public License for details. + + You should have received a copy of the GNU Affero General Public License + along with Ingen. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <errno.h> +#include <sys/fcntl.h> +#include <sys/socket.h> +#include <sys/un.h> + +#include "ingen/Interface.hpp" +#include "ingen/shared/World.hpp" +#include "ingen/shared/AtomReader.hpp" +#include "sord/sordmm.hpp" +#include "sratom/sratom.h" +#include "SocketInterface.hpp" + +#include "../server/Event.hpp" +#include "../server/PostProcessor.hpp" +#include "../server/ThreadManager.hpp" + +#define LOG(s) s << "[SocketInterface] " + +namespace Ingen { +namespace Socket { + +SocketInterface::SocketInterface(Ingen::Shared::World& world, int conn) + : _world(world) + , _iface(*(Server::Engine*)world.local_engine().get(), *this) + , _event(NULL) + , _conn(conn) +{ + // Set connection to non-blocking so parser can read until EOF + // and not block indefinitely waiting for more input + fcntl(_conn, F_SETFL, fcntl(_conn, F_GETFL, 0) | O_NONBLOCK); + + set_name("SocketInterface"); + start(); +} + +SocketInterface::~SocketInterface() +{ + stop(); + join(); + close(_conn); +} + +void +SocketInterface::event(Server::Event* ev) +{ + assert(!_event); + ev->pre_process(); + _event = ev; +} + +bool +SocketInterface::process(Server::PostProcessor& dest, + Server::ProcessContext& context, + bool limit) +{ + if (_event) { + _event->execute(context); + dest.append(_event, _event); + _event = NULL; + } + if (_conn == -1) { + return false; + } + return true; +} + +void +SocketInterface::_run() +{ + Thread::set_context(Server::THREAD_PRE_PROCESS); + while (!_exit_flag) { + // Set up a reader to parse the Turtle message into a model + Sord::World* world = _world.rdf_world(); + SerdEnv* env = world->prefixes().c_obj(); + SordModel* model = sord_new(world->c_obj(), SORD_SPO, false); + SerdReader* reader = sord_new_reader(model, env, SERD_TURTLE, NULL); + // Set base URI to path: so e.g. </foo/bar> will be a path + SordNode* base_uri = sord_new_uri( + world->c_obj(), (const uint8_t*)"path:"); + serd_env_set_base_uri(env, sord_node_to_serd_node(base_uri)); + + LV2_URID_Map* map = &_world.lv2_uri_map()->urid_map_feature()->urid_map; + + // Set up sratom to build an LV2_Atom from the model + Sratom* sratom = sratom_new(map); + SerdChunk chunk = { NULL, 0 }; + LV2_Atom_Forge forge; + lv2_atom_forge_init(&forge, map); + lv2_atom_forge_set_sink( + &forge, sratom_forge_sink, sratom_forge_deref, &chunk); + + // Read directly from the connection with serd + FILE* f = fdopen(_conn, "r"); + if (!f) { + LOG(Raul::error) << "Failed to open connection " << _conn + << "(" << strerror(errno) << ")" << std::endl; + // Connection gone, exit + break; + } + + serd_reader_read_file_handle(reader, f, (const uint8_t*)"(socket)"); + + // FIXME: Sratom needs work to be able to read resources + SordNode* msg_node = sord_new_blank( + world->c_obj(), (const uint8_t*)"genid1"); + + // Build an LV2_Atom at chunk.buf from the message + sratom_read(sratom, &forge, world->c_obj(), model, msg_node); + + // Make an AtomReader to read that atom and do Ingen things + Shared::AtomReader ar(*_world.lv2_uri_map().get(), + *_world.uris().get(), + _world.forge(), + _iface); + + // Call _iface methods based on atom content + ar.write((LV2_Atom*)chunk.buf); + + // Respond and close connection + write(_conn, "OK", 2); + fclose(f); + + sratom_free(sratom); + sord_node_free(world->c_obj(), msg_node); + serd_reader_free(reader); + sord_free(model); + } + + _conn = -1; +} + +} // namespace Ingen +} // namespace Socket |