Server/src/server.cpp

   1 // vim: set noexpandtab tabstop=4 shiftwidth=4:
   2 //----------------------------------------------------------------------------
   3 //                                  PlaQui
   4 //----------------------------------------------------------------------------
   5 // This file is part of PlaQui.
   6 //
   7 // PlaQui is free software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the Free Software
   9 // Foundation; either version 2 of the License, or (at your option) any later
  10 // version.
  11 //
  12 // PlaQui is distributed in the hope that it will be useful, but WITHOUT ANY
  13 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  14 // FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
  15 // details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with PlaQui; if not, write to the Free Software Foundation, Inc., 59 Temple
  19 // Place, Suite 330, Boston, MA  02111-1307  USA
  20 //----------------------------------------------------------------------------
  21 // Creado:  Sat Oct 18 18:18:36 2003
  22 // Autores: Leandro Lucarella <llucare@fi.uba.ar>
  23 //----------------------------------------------------------------------------
  24 //
  25 // $Id$
  26 //
  27
  28 #include "plaqui/server/server.h"
  29 #include "plaqui/server/connection.h"
  30 #include "plaqui/server/controlserver.h"
  31 #include <sigc++/class_slot.h>
  32 // FIXME - sacar sstream (a menos que se necesite)
  33 #include <sstream>
  34 #ifdef DEBUG
  35 #       include "plaqui/server/string.h"
  36 #       include <iostream>
  37 #endif // DEBUG
  38
  39 using namespace std;
  40
  41 namespace PlaQui {
  42
  43 namespace Server {
  44
  45 Server::~Server(void) {
  46 #ifdef DEBUG
  47         cerr << __FILE__ <<  ": destructor." << endl;
  48 #endif // DEBUG
  49         // Termino plantas.
  50         Glib::Mutex::Lock lock(plants_mutex);
  51         for (PlantList::iterator i = plants.end(); i != plants.end(); i++) {
  52                 i->second->finish(true);
  53         }
  54 }
  55
  56 Server::Server(const string& plant_filename, const Connection::Port& port):
  57                 TCPServer(port) {
  58 #ifdef DEBUG
  59         cerr << __FILE__ <<  ": port = " << port << endl;
  60 #endif // DEBUG
  61         // FIXME
  62         Glib::Mutex::Lock lock(plants_mutex);
  63         plants["default"] = new Plant(plant_filename);
  64         plants["default"]->signal_finished().connect(
  65                         SigC::bind<const char*>(
  66                                 SigC::slot_class(*this, &Server::on_plant_finished),
  67                                 "default"));
  68         plants["default"]->run();
  69 }
  70
  71 Connection* Server::new_connection(
  72                 const sockbuf::sockdesc& sd) {
  73 #ifdef DEBUG
  74         cerr << __FILE__ <<  ": new_connection(sd = " << sd.sock << ")"
  75                 << endl;
  76 #endif // DEBUG
  77         ControlServer* connection = new ControlServer(sd);
  78         // TODO verificar si el new se hace bien? no creo.
  79         connection->signal_command_received().connect(
  80                         SigC::bind<ControlServer*>(
  81                                 SigC::slot_class(*this, &Server::on_control_command_received),
  82                                 connection));
  83         // TODO:
  84         return connection;
  85 }
  86
  87 void Server::on_plant_updated(const Plant* plant) {
  88 #ifdef DEBUG
  89         cerr << __FILE__ << ": on_plant_updated(plant = " << plant << ")." << endl;
  90 #endif // DEBUG
  91 }
  92
  93 void Server::on_plant_finished(const char* plant) {
  94 #ifdef DEBUG
  95         cerr << __FILE__ <<  ": on_plant_finished(plant_name = " << plant << endl;
  96 #endif // DEBUG
  97         Glib::Mutex::Lock lock(plants_mutex);
  98         plants.erase(plant);
  99 }
 100
 101 /// \todo Terminar de implementar.
 102 void Server::on_control_command_received(const Command& command,
 103                 ControlServer* controlserver) {
 104 #ifdef DEBUG
 105         cerr << __FILE__ <<  ": on_control_command_received(target = "
 106                 << command.get_target() << ", command = " << command.get_command()
 107                 << ", args = [" << String::join(command.get_args(), ", ") << "])"
 108                 << endl;
 109 #endif // DEBUG
 110         HTTPResponse* response;
 111         //bool stop_controlserver = false;
 112         if (command.get_target() == "server") {
 113                 if (command.get_command() == "status") {
 114                         response = cmd_server_status();
 115                 } else if (command.get_command() == "stop") {
 116                         finish();
 117                         response = new HTTPResponse(HTTPMessage::OK,
 118                                         "El server se apagará en instantes...");
 119                 } else {
 120                         response = new HTTPResponse(HTTPMessage::NOT_FOUND,
 121                                         "Invalid command for 'server' taget!");
 122                 }
 123         } else if (command.get_target() == "connection") {
 124                 if (command.get_command() == "list") {
 125                         response = cmd_connection_list();
 126                 } else if (command.get_command() == "stop") {
 127                         response = cmd_connection_stop(command);
 128                 } else {
 129                         response = new HTTPResponse(HTTPMessage::NOT_FOUND,
 130                                         "Invalid command for 'connection' taget!");
 131                 }
 132         } else if (command.get_target() == "transmission") {
 133                 if (command.get_command() == "list") {
 134                         response = cmd_transmission_list();
 135                 } else if (command.get_command() == "start") {
 136                         response = cmd_transmission_start(command);
 137                 } else if (command.get_command() == "stop") {
 138                         response = cmd_transmission_stop(command);
 139                 } else {
 140                         response = new HTTPResponse(HTTPMessage::NOT_FOUND,
 141                                         "Invalid command for 'transmission' taget!");
 142                 }
 143         } else if (command.get_target() == "plant") {
 144                 if (command.get_command() == "list") {
 145                         response = cmd_plant_list();
 146                 } else if (command.get_command() == "get") {
 147                         response = cmd_plant_get(command);
 148                 } else if (command.get_command() == "set") {
 149                         response = cmd_plant_set(command);
 150                 } else if (command.get_command() == "stop") {
 151                         response = cmd_plant_stop(command);
 152                 } else {
 153                         response = new HTTPResponse(HTTPMessage::NOT_FOUND,
 154                                         "Invalid command for 'plant' taget!");
 155                 }
 156         } else {
 157                 response = new HTTPResponse(HTTPMessage::NOT_FOUND, "Invalid taget!");
 158         }
 159         // FIXME
 160         response->headers["Content-Type"] = "text/xml; charset=iso-8859-1";
 161         //response->headers["Connection"] = "close";
 162         controlserver->send(*response);
 163         delete response;
 164         // FIXME con timeout no debería ser necesario. Verificar cabecera Connection
 165         // para saber si hay que finish()earlo o no.
 166         //if (stop_controlserver) {
 167         //      controlserver->finish();
 168         //}
 169 }
 170
 171 HTTPResponse* Server::cmd_server_status(void) const {
 172         // FIXME
 173         stringstream response_xml;
 174         response_xml << "<serverstatus>" << endl;
 175         response_xml << "\t<version>0.9</version>" << endl;
 176         response_xml << "\t<authors>" << endl;
 177         response_xml << "\t\t<author>Nicolás Dimov</author>" << endl;
 178         response_xml << "\t\t<author>Leandro Lucarella</author>" << endl;
 179         response_xml << "\t\t<author>Ricardo Markiewicz</author>" << endl;
 180         response_xml << "\t</authors>" << endl;
 181         response_xml << "</serverstatus>" << endl;
 182         return new HTTPResponse(HTTPMessage::OK, response_xml.str());
 183 }
 184
 185 HTTPResponse* Server::cmd_connection_list(void) {
 186         // FIXME
 187         TCPServer::ConnectionInfoList cil = get_connected();
 188         stringstream response_xml;
 189         response_xml << "<list type=\"connection\">" << endl;
 190         for (TCPServer::ConnectionInfoList::const_iterator i = cil.begin();
 191                         i != cil.end(); i++) {
 192                 response_xml << "\t<row>" << endl;
 193                 response_xml << "\t\t<cell>" << i->host << "</cell>" << endl;
 194                 response_xml << "\t\t<cell>" << i->port << "</cell>" << endl;
 195                 response_xml << "\t</row>" << endl;
 196         }
 197         response_xml << "</list>" << endl;
 198         return new HTTPResponse(HTTPMessage::OK, response_xml.str());
 199 }
 200
 201 HTTPResponse* Server::cmd_connection_stop(const Command& command) {
 202         const Command::Arguments& args = command.get_args();
 203         Connection::Port port;
 204         if (args.size() < 2) {
 205                 return new HTTPResponse(HTTPMessage::CONFLICT,
 206                                 "Faltan argumentos.");
 207         } else if (disconnect(args[0], String(args[1]).to(port))) {
 208                 return new HTTPResponse(HTTPMessage::OK,
 209                                 string("La conexión a ") + args[0] + ":" + args[1]
 210                                 + " se cerrará en instantes...");
 211         } else {
 212                 return new HTTPResponse(HTTPMessage::NOT_FOUND,
 213                                 string("No existe una conexión a ") + args[0]
 214                                 + ":" + args[1]);
 215         }
 216 }
 217
 218 HTTPResponse* Server::cmd_transmission_list(void) {
 219         // FIXME
 220         stringstream response_xml;
 221         response_xml << "<list type=\"transmission\">" << endl;
 222 /*TODO  plants_mutex.lock();
 223         for (PlantList::const_iterator i = plants.begin();
 224                         i != plants.end(); i++) {
 225                 trans
 226                 response_xml << "       <li>" << (*i)->get_host() << ":"
 227                         << (*i)->get_port() << " [<a href=\"/transmission/stop/"
 228                         << (*i)->get_host() << "/" << (*i)->get_port()
 229                         << "\">desconectar</a>]</li>" << endl;
 230         }
 231         transmissions_mutex.unlock();*/
 232         response_xml << "</list>" << endl;
 233         return new HTTPResponse(HTTPMessage::OK, response_xml.str());
 234 }
 235
 236 HTTPResponse* Server::cmd_transmission_start(const Command& command) {
 237         const Command::Arguments& args = command.get_args();
 238         if (args.size() < 3) {
 239                 return new HTTPResponse(HTTPMessage::CONFLICT,
 240                                 "Faltan argumentos.");
 241         } else {
 242                 string plant = args[0];
 243                 string host = args[1];
 244                 Connection::Port port = String(args[2]).to(port);
 245                 Glib::Mutex::Lock lock(plants_mutex);
 246                 PlantList::iterator p = plants.find(plant);
 247                 if (p == plants.end()) {
 248                         return new HTTPResponse(HTTPMessage::NOT_FOUND,
 249                                         string("No existe la planta '") + plant + "'.");
 250                 // TODO - agregar chequeo de que la transmision a ese host:port no
 251                 //        exista para otra planta?
 252                 } else if (plants[plant]->transmission_start(host, port)) {
 253                         return new HTTPResponse(HTTPMessage::OK,
 254                                         string("Se empieza a transmitir la planta '") + plant
 255                                         + "' a " + host + ":" + String().from(port) + ".");
 256                 } else {
 257                         return new HTTPResponse(HTTPMessage::INTERNAL_SERVER_ERROR,
 258                                         string("Error al crear la transmisión a de la planta '")
 259                                         + plant + "' a " + host + ":" + args[2] + ".");
 260                 }
 261         }
 262 }
 263
 264 HTTPResponse* Server::cmd_transmission_stop(const Command& command) {
 265         const Command::Arguments& args = command.get_args();
 266         if (args.size() < 2) {
 267                 return new HTTPResponse(HTTPMessage::CONFLICT,
 268                                 "Faltan argumentos.");
 269         } else {
 270                 const string& host = args[0];
 271                 Connection::Port port = String(args[1]).to(port);
 272                 for (PlantList::iterator i = plants.begin(); i != plants.end(); i++) {
 273                         // TODO - agregar chequeo para saber si existe una conexion (para
 274                         // tirar error de que no hay conexion o de que no se pudo
 275                         // desconectar.
 276                         if (i->second->transmission_stop(host, port)) {
 277                                 return new HTTPResponse(HTTPMessage::OK,
 278                                                 string("Se finaliza la transmisión de la planta '")
 279                                                 + i->first + "' a " + host + ":" + args[1] + ".");
 280                         }
 281                 }
 282                 return new HTTPResponse(HTTPMessage::NOT_FOUND,
 283                                 string("No se puede finalizar la transmisión a ")
 284                                 + host + ":" + args[1] + ".");
 285         }
 286 }
 287
 288 HTTPResponse* Server::cmd_plant_list(void) {
 289         // FIXME
 290         stringstream response_xml;
 291         response_xml << "<list type=\"plant\">" << endl;
 292         plants_mutex.lock();
 293         for (PlantList::const_iterator i = plants.begin();
 294                         i != plants.end(); i++) {
 295                 response_xml << "\t<row>" << endl;
 296                 response_xml << "\t\t<cell>" << i->first << "</cell>" << endl;
 297                 response_xml << "\t</row>" << endl;
 298         }
 299         plants_mutex.unlock();
 300         response_xml << "</list>" << endl;
 301         return new HTTPResponse(HTTPMessage::OK, response_xml.str());
 302 }
 303
 304 HTTPResponse* Server::cmd_plant_get(const Command& command) {
 305         if (!command.get_args().size()) {
 306                 return new HTTPResponse(HTTPMessage::CONFLICT,
 307                                 "Faltan argumentos.");
 308         }
 309         Glib::Mutex::Lock lock(plants_mutex);
 310         string plant = command.get_args()[0];
 311         if (plants.find(plant) == plants.end()) {
 312                 return new HTTPResponse(HTTPMessage::NOT_FOUND,
 313                                 string("No existe la planta ") + plant);
 314         }
 315         string xml = plants[plant]->get_xml();
 316         if (xml.length()) {
 317                 return new HTTPResponse(HTTPMessage::OK, xml);
 318         } else {
 319                 return new HTTPResponse(HTTPMessage::INTERNAL_SERVER_ERROR,
 320                                 ("No se pudo obtener el XML de la planta ") + plant);
 321         }
 322 }
 323
 324 HTTPResponse* Server::cmd_plant_set(const Command& command) {
 325         const Command::Arguments& args = command.get_args();
 326         if (args.size() < 4) {
 327                 return new HTTPResponse(HTTPMessage::CONFLICT,
 328                                 "Faltan argumentos.");
 329         }
 330         string plant = args[0];
 331         string element = args[1];
 332         string key = args[2];
 333         string value = args[3];
 334         Glib::Mutex::Lock lock(plants_mutex);
 335         PlantList::iterator p = plants.find(plant);
 336         if (p == plants.end()) {
 337                 return new HTTPResponse(HTTPMessage::NOT_FOUND,
 338                                 string("No existe la planta '") + plant + "'.");
 339         }
 340 /*      if (!plants[plant]->set_element(host, port)) {
 341                 return new HTTPResponse(HTTPMessage::INTERNAL_SERVER_ERROR,
 342                                 string("Error al crear la transmisión a de la planta '")
 343                                 + plant + "' a " + host + ":" + args[2] + ".");
 344         }*/
 345         return new HTTPResponse(HTTPMessage::OK);
 346 }
 347
 348 HTTPResponse* Server::cmd_plant_stop(const Command& command) {
 349         if (!command.get_args().size()) {
 350                 return new HTTPResponse(HTTPMessage::CONFLICT,
 351                                 "Faltan argumentos.");
 352         }
 353         Glib::Mutex::Lock lock(plants_mutex);
 354         const string name = command.get_args()[0];
 355         if (plants.find(name) == plants.end()) {
 356                 return new HTTPResponse(HTTPMessage::NOT_FOUND,
 357                                 string("No existe la planta ") + name);
 358         }
 359         // TODO Ver si al frenar la planta se destruye (no deberia!!!)
 360         plants[name]->finish();
 361         return new HTTPResponse(HTTPMessage::OK,
 362                         string("La planta '") + name + "' se cerrará en instantes...");
 363 }
 364
 365 } // namespace Server
 366
 367 } // namespace PlaQui
 368