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() == "stop") {
 147                         response = cmd_plant_stop(command);
 148                 } else {
 149                         response = new HTTPResponse(HTTPMessage::NOT_FOUND,
 150                                         "Invalid command for 'plant' taget!");
 151                 }
 152         } else {
 153                 response = new HTTPResponse(HTTPMessage::NOT_FOUND, "Invalid taget!");
 154         }
 155         // FIXME
 156         response->headers["Content-Type"] = "text/html; charset=iso-8859-1";
 157         //response->headers["Connection"] = "close";
 158         controlserver->send(*response);
 159         delete response;
 160         // FIXME con timeout no debería ser necesario. Verificar cabecera Connection
 161         // para saber si hay que finish()earlo o no.
 162         //if (stop_controlserver) {
 163         //      controlserver->finish();
 164         //}
 165 }
 166
 167 HTTPResponse* Server::cmd_server_status(void) const {
 168         // FIXME
 169         stringstream response_xml;
 170         response_xml << "<html>" << endl;
 171         response_xml << "    <head>" << endl;
 172         response_xml << "        <title>PlaQui v0.8</title>" << endl;
 173         response_xml << "    </head>" << endl;
 174         response_xml << "    <body>" << endl;
 175         response_xml << "        <h1>PlaQui</h1>" << endl;
 176         response_xml << "        <p>versión 0.8</p>" << endl;
 177 /*      response_xml << "        <h2>Comando</h2>" << endl;
 178         response_xml << "        <ul>" << endl;
 179         response_xml << "           <li><b>Target:</b> " << command.get_target() << endl;
 180         response_xml << "           <li><b>Command:</b> " << command.get_command() << endl;
 181         response_xml << "           <li><b>Argumentos:</b>" << endl;
 182         response_xml << "               <ol>" << endl;
 183         for (Command::Arguments::const_iterator i = command.get_args().begin();
 184                         i != command.get_args().end(); i++) {
 185                 response_xml << "                   <li>" << *i << "</li>" << endl;
 186         }
 187         response_xml << "               </ol>" << endl;
 188         response_xml << "        </ul>" << endl;*/
 189         response_xml << "        <h2>Desarrollado por</h2>" << endl;
 190         response_xml << "        <ul>" << endl;
 191         response_xml << "            <li>Nicolás Dimov.</li>" << endl;
 192         response_xml << "            <li>Leandro Lucarella.</li>" << endl;
 193         response_xml << "            <li>Ricardo Markiewicz.</li>" << endl;
 194         response_xml << "        </ul>" << endl;
 195         response_xml << "        <address>" << endl;
 196         response_xml << "             Copyleft 2003 - bajo los " << endl;
 197         response_xml << "             términos de la licencia GPL" << endl;
 198         response_xml << "        </address>" << endl;
 199         response_xml << "    </body>" << endl;
 200         response_xml << "</html>" << endl;
 201         return new HTTPResponse(HTTPMessage::OK, response_xml.str());
 202 }
 203
 204 HTTPResponse* Server::cmd_connection_list(void) {
 205         // FIXME
 206         TCPServer::ConnectionInfoList cil = get_connected();
 207         stringstream response_xml;
 208         response_xml << "<html>" << endl;
 209         response_xml << "    <head>" << endl;
 210         response_xml << "        <title>PlaQui v0.8</title>" << endl;
 211         response_xml << "    </head>" << endl;
 212         response_xml << "    <body>" << endl;
 213         response_xml << "        <h1>PlaQui</h1>" << endl;
 214         response_xml << "        <p>versión 0.8</p>" << endl;
 215         response_xml << "        <h2>Lista de conexiones:</h2>" << endl;
 216         response_xml << "        <ul>" << endl;
 217         for (TCPServer::ConnectionInfoList::const_iterator i = cil.begin();
 218                         i != cil.end(); i++) {
 219                 response_xml << "       <li>" << i->host
 220                         << ":" << i->port << " [<a href=\"/connection/stop/"
 221                         << i->host << "/" << i->port << "\">deconectar</a>]</li>"
 222                         << endl;
 223         }
 224         response_xml << "        </ul>" << endl;
 225         response_xml << "        <address>" << endl;
 226         response_xml << "             Copyleft 2003 - bajo los " << endl;
 227         response_xml << "             términos de la licencia GPL" << endl;
 228         response_xml << "        </address>" << endl;
 229         response_xml << "    </body>" << endl;
 230         response_xml << "</html>" << endl;
 231         return new HTTPResponse(HTTPMessage::OK, response_xml.str());
 232 }
 233
 234 HTTPResponse* Server::cmd_connection_stop(const Command& command) {
 235         const Command::Arguments& args = command.get_args();
 236         Connection::Port port;
 237         if (args.size() < 2) {
 238                 return new HTTPResponse(HTTPMessage::CONFLICT,
 239                                 "Faltan argumentos.");
 240         } else if (disconnect(args[0], String(args[1]).to(port))) {
 241                 return new HTTPResponse(HTTPMessage::OK,
 242                                 string("La conexión a ") + args[0] + ":" + args[1]
 243                                 + " se cerrará en instantes...");
 244         } else {
 245                 return new HTTPResponse(HTTPMessage::NOT_FOUND,
 246                                 string("No existe una conexión a ") + args[0]
 247                                 + ":" + args[1]);
 248         }
 249 }
 250
 251 HTTPResponse* Server::cmd_transmission_list(void) {
 252         // FIXME
 253         stringstream response_xml;
 254         response_xml << "<html>" << endl;
 255         response_xml << "    <head>" << endl;
 256         response_xml << "        <title>PlaQui v0.8</title>" << endl;
 257         response_xml << "    </head>" << endl;
 258         response_xml << "    <body>" << endl;
 259         response_xml << "        <h1>PlaQui</h1>" << endl;
 260         response_xml << "        <p>versión 0.8</p>" << endl;
 261         response_xml << "        <h2>Lista de transmisiones:</h2>" << endl;
 262         response_xml << "        <ul>" << endl;
 263         // TODO - recorrer todas las plantas y sus transmisiones.
 264 /*      transmissions_mutex.lock();
 265         for (TransmitterList::const_iterator i = transmissions.begin();
 266                         i != transmissions.end(); i++) {
 267                 response_xml << "       <li>" << (*i)->get_host() << ":"
 268                         << (*i)->get_port() << " [<a href=\"/transmission/stop/"
 269                         << (*i)->get_host() << "/" << (*i)->get_port()
 270                         << "\">desconectar</a>]</li>" << endl;
 271         }
 272         transmissions_mutex.unlock();*/
 273         response_xml << "        </ul>" << endl;
 274         response_xml << "        <address>" << endl;
 275         response_xml << "             Copyleft 2003 - bajo los " << endl;
 276         response_xml << "             términos de la licencia GPL" << endl;
 277         response_xml << "        </address>" << endl;
 278         response_xml << "    </body>" << endl;
 279         response_xml << "</html>" << endl;
 280         return new HTTPResponse(HTTPMessage::OK, response_xml.str());
 281 }
 282
 283 HTTPResponse* Server::cmd_transmission_start(const Command& command) {
 284         const Command::Arguments& args = command.get_args();
 285         if (args.size() < 3) {
 286                 return new HTTPResponse(HTTPMessage::CONFLICT,
 287                                 "Faltan argumentos.");
 288         } else {
 289                 const string& plant = args[0];
 290                 const string& host = args[1];
 291                 Connection::Port port = String(args[2]).to(port);
 292                 Glib::Mutex::Lock lock(plants_mutex);
 293                 PlantList::iterator p = plants.find(plant);
 294                 if (p == plants.end()) {
 295                         return new HTTPResponse(HTTPMessage::NOT_FOUND,
 296                                         string("No existe la planta '") + plant + "'.");
 297                 // TODO - agregar chequeo de que la transmision a ese host:port no
 298                 //        exista para otra planta?
 299                 } else if (plants[plant]->transmission_start(host, port)) {
 300                         return new HTTPResponse(HTTPMessage::OK,
 301                                         string("Se empieza a transmitir la planta '") + plant
 302                                         + "' a " + host + ":" + args[1] + ".");
 303                 } else {
 304                         return new HTTPResponse(HTTPMessage::INTERNAL_SERVER_ERROR,
 305                                         string("Error al crear la transmisión a de la planta '")
 306                                         + plant + "' a " + host + ":" + args[2] + ".");
 307                 }
 308         }
 309 }
 310
 311 HTTPResponse* Server::cmd_transmission_stop(const Command& command) {
 312         const Command::Arguments& args = command.get_args();
 313         if (args.size() < 2) {
 314                 return new HTTPResponse(HTTPMessage::CONFLICT,
 315                                 "Faltan argumentos.");
 316         } else {
 317                 const string& host = args[0];
 318                 Connection::Port port = String(args[1]).to(port);
 319                 for (PlantList::iterator i = plants.begin(); i != plants.end(); i++) {
 320                         // TODO - agregar chequeo para saber si existe una conexion (para
 321                         // tirar error de que no hay conexion o de que no se pudo
 322                         // desconectar.
 323                         if (i->second->transmission_stop(host, port)) {
 324                                 return new HTTPResponse(HTTPMessage::OK,
 325                                                 string("Se finaliza la transmisión de la planta '")
 326                                                 + i->first + "' a " + host + ":" + args[1] + ".");
 327                         }
 328                 }
 329                 return new HTTPResponse(HTTPMessage::NOT_FOUND,
 330                                 string("No se puede finalizar la transmisión a ")
 331                                 + host + ":" + args[1] + ".");
 332         }
 333 }
 334
 335 HTTPResponse* Server::cmd_plant_list(void) {
 336         // FIXME
 337         stringstream response_xml;
 338         response_xml << "<html>" << endl;
 339         response_xml << "    <head>" << endl;
 340         response_xml << "        <title>PlaQui v0.8</title>" << endl;
 341         response_xml << "    </head>" << endl;
 342         response_xml << "    <body>" << endl;
 343         response_xml << "        <h1>PlaQui</h1>" << endl;
 344         response_xml << "        <p>versión 0.8</p>" << endl;
 345         response_xml << "        <h2>Lista de plantas:</h2>" << endl;
 346         response_xml << "        <ul>" << endl;
 347         plants_mutex.lock();
 348         for (PlantList::const_iterator i = plants.begin();
 349                         i != plants.end(); i++) {
 350                 response_xml << "       <li>" << i->first
 351                         << " [<a href=\"/plant/stop/" << i->first << "\">parar</a>]</li>"
 352                         << endl;
 353         }
 354         plants_mutex.unlock();
 355         response_xml << "        </ul>" << endl;
 356         response_xml << "        <address>" << endl;
 357         response_xml << "             Copyleft 2003 - bajo los " << endl;
 358         response_xml << "             términos de la licencia GPL" << endl;
 359         response_xml << "        </address>" << endl;
 360         response_xml << "    </body>" << endl;
 361         response_xml << "</html>" << endl;
 362         return new HTTPResponse(HTTPMessage::OK, response_xml.str());
 363 }
 364
 365 HTTPResponse* Server::cmd_plant_stop(const Command& command) {
 366         if (!command.get_args().size()) {
 367                 return new HTTPResponse(HTTPMessage::CONFLICT,
 368                                 "Faltan argumentos.");
 369         }
 370         Glib::Mutex::Lock lock(plants_mutex);
 371         const string name = command.get_args()[0];
 372         if (plants.find(name) == plants.end()) {
 373                 return new HTTPResponse(HTTPMessage::NOT_FOUND,
 374                                 string("No existe la planta ") + name);
 375         }
 376         // TODO Ver si al frenar la planta se destruye (no deberia!!!)
 377         plants[name]->finish();
 378         return new HTTPResponse(HTTPMessage::OK,
 379                         string("La planta '") + name + "' se cerrará en instantes...");
 380 }
 381
 382 } // namespace Server
 383
 384 } // namespace PlaQui
 385