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misc.c

/*    $Id: misc.c,v 1.65 2002/10/13 23:29:08 riq Exp $      */
/* Tenes Empanadas Graciela
 *
 * Copyright (C) 2000 Ricardo Quesada
 *
 * Author: Ricardo Calixto Quesada <rquesada@core-sdi.com>
 *
 * 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; only version 2 of the License
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */
/*
 * misc functions
 */

#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>

#include <glib.h>

#include "ggz_client.h"

#include "client.h"

CJUEGO g_game;                /**< client game */

static void close_descriptors( void )
{
      int i, open_max;

      /* force manually the close of the socket */
      if( g_game.fd >0 )
            net_close (g_game.fd);

      open_max = sysconf (_SC_OPEN_MAX);
      for (i = 3; i < open_max; i++)
            fcntl (i, F_SETFD, FD_CLOEXEC);
}

/* re-initializes a game. called every time a new game will start */
TEG_STATUS game_reinit()
{
      int i;

      g_game.playeres = 0;
      g_game.dados_srccountry=-1;
      g_game.dados_dstcountry=-1;
      for(i=0;i<3;i++) {
            g_game.dados_src[i] = 0;
            g_game.dados_dst[i] = 0;
      }

      InitializeListHead( &g_game.tarjetas_list );
      g_game.tarjetas_cant = 0;
      for(i=0;i<COUNTRIES_CANT;i++)
            tarjeta_inittarj( &g_countries[i].tarjeta );

      g_game.secret_mission = -1;
      g_game.rules = TEG_RULES_TEG;
      g_game.whos_turn = -1;
      g_game.who_started_round = -1;
      g_game.round_number = -1;
      g_game.with_secret_mission = -1;
      g_game.with_common_mission = -1;
      g_game.with_fog_of_war = -1;

      return TEG_STATUS_SUCCESS;
}


/* initializes a game */
TEG_STATUS game_init()
{
      static int firsttime=1;
      g_game.fd = -1;
      g_game.numjug = -1;
      g_game.observer = 0;

      /* variables seteadas por command line y que pueden cambiar estos defaults */
      if(firsttime) {
            dirs_create();
            g_game.with_ggz = 0;
            g_game.already_connected = 0;
      }

      ESTADO_SET(PLAYER_STATUS_DESCONECTADO);

      game_reinit();

      /* name, server, serverport, color is assigned in the gui */

      firsttime=0;

      return TEG_STATUS_SUCCESS;
}

/* called when a game is over. initializes the client for a new game */
TEG_STATUS game_finalize()
{
      countries_init();
      game_reinit();

      return TEG_STATUS_SUCCESS;
}

/* connect to a server */
TEG_STATUS teg_connect()
{
      if( ESTADO_ES(PLAYER_STATUS_DESCONECTADO)) {

            /* standar mode */
            if( !g_game.with_ggz && ! g_game.already_connected ) {
                  g_game.fd = net_connect_tcp( (char*) &g_game.sername, g_game.serport );
                  if( g_game.fd < 0) {
                        textmsg(M_ERR,_("Error while trying to connect to server '%s' at port %d"),g_game.sername,g_game.serport);
                        return TEG_STATUS_ERROR;
                  }

            } else if( g_game.with_ggz ) {

#ifdef WITH_GGZ
                  /* GGZ mode */
                  g_game.fd = ggz_client_connect();
                  if( g_game.fd < 0 ) {
                        textmsg(M_ERR,_("Error while trying to connect to GGZ client"));
                        return TEG_STATUS_ERROR;
                  }
#endif /* WITH_GGZ */
            } else if( g_game.already_connected )
                  g_game.fd = 3;

            if( ! g_game.with_ggz ) {
                  out_pversion();
            }

            return TEG_STATUS_SUCCESS;
      } else {
            textmsg(M_ERR,_("Error, you are already connected"));
            return TEG_STATUS_ERROR;
      }
}

/* disconnects from the server */
TEG_STATUS teg_disconnect()
{
      ESTADO_SET(PLAYER_STATUS_DESCONECTADO);

      player_flush();

      if( g_game.fd > 0 ) {
#if WITH_GGZ
            if( g_game.with_ggz )
                  ggz_client_disconnect();
            else
#endif /* WITH_GGZ */
                  net_close( g_game.fd );
            g_game.fd = -1;
      }

      game_finalize();
      game_init();

      gui_disconnect();


      return TEG_STATUS_SUCCESS;
}

/* playerid_restore_from_error( void ) */
TEG_STATUS playerid_restore_from_error( void )
{
      textmsg( M_ERR, _("The game has already started. Connect as an observer."));
      teg_disconnect();
      return TEG_STATUS_SUCCESS;
}

/* Launch a server in localost */
TEG_STATUS launch_server( int port )
{
      pid_t pid;
      char *args[6];

      if ( (pid = fork()) < 0) {
            perror("tegclient:");
            return TEG_STATUS_ERROR;
      } else if (pid == 0) {

            char buffer[100];
            close_descriptors();
            args[0] = "xterm";
            args[1] = "-e";
            args[2] = BINDIR"/tegserver";
            args[3] = "--port";
            snprintf(buffer, sizeof(buffer)-1, "%d", port); 
            buffer[ sizeof(buffer)-1 ] = 0;
            args[4] = buffer;
            args[5] = NULL;

            if( execvp(args[0], args) < 0) {
                  perror(args[0]);
                  /* last chance, launch tegserver without console */
                  args[0] = BINDIR"/tegserver";
                  args[1] = "--console";
                  args[2] = "0";
                  args[3] = "--port";
                  snprintf(buffer, sizeof(buffer)-1, "%d", port); 
                  buffer[ sizeof(buffer)-1 ] = 0;
                  args[4] = buffer;
                  args[5] = NULL;
                  if( execv(args[0], args) < 0) {
                        fprintf(stderr,"Launching server failed. Does the file '%s' exists ?\n",args[0]);
                        perror("exe:");

                        /* This saves a crash */
                        args[0] = "/bin/true";
                        args[1] = NULL;
                        execv(args[0],args);
                        exit(1);
                  }
            }
            return TEG_STATUS_ERROR;
      } else {
            /* wait util server is launched */
            sleep(2);
      }
      return TEG_STATUS_SUCCESS;
}

/* Launch robot in localhost */
TEG_STATUS launch_robot( void )
{
      pid_t pid;
      char *args[7];
      char port[50];

      /* launch robot in the server */
      if( g_game.robot_in_server )
            return out_robot();

      /* launch robot in the client */
      if ( (pid = fork()) < 0) {
            perror("tegclient:");
            return TEG_STATUS_ERROR;
      } else if (pid == 0) {

            close_descriptors();

            sprintf(port,"%d",g_game.serport);

            args[0] = BINDIR"/tegrobot";
            args[1] = "--server";
            args[2] = g_game.sername;
            args[3] = "--port";
            args[4] = port;
            args[5] = "--quiet";
            args[6] = NULL;
      
            if( execv(args[0], args) < 0) {
                  fprintf(stderr,"Launching robot failed. Does the file '%s' exists ?\n",args[0]);
                  perror("exe:");

                  /* This saves a crash */
                  args[0] = "/bin/true";
                  args[1] = NULL;
                  execv(args[0],args);
                  exit(1);
            }
            return TEG_STATUS_ERROR;
      } else {
            /* nothing */
      }
      return TEG_STATUS_SUCCESS;
}

/* display a message */
TEG_STATUS textmsg( int level, char *format, ...)
{
        va_list args;
      char buf[PROT_MAX_LEN];

      va_start(args, format);
      vsnprintf(buf, sizeof(buf) -1, format, args);
      va_end(args);

      buf[ sizeof(buf) -1 ] = 0;

      if( g_game.msg_show & level )
            gui_textmsg(buf);
      return TEG_STATUS_SUCCESS;
}

/* Creates defaults dir for TEG */
TEG_STATUS dirs_create()
{
      DIR *dir;
      char buf[1000];

      memset(buf,0,sizeof(buf));

      snprintf(buf,sizeof(buf)-1,"%s/%s",g_get_home_dir(),TEG_DIRRC);

      if( (dir = opendir(buf)) == NULL )
            mkdir(buf,0755);
      else
            closedir(dir);

      snprintf(buf,sizeof(buf)-1,"%s/%s/themes",g_get_home_dir(),TEG_DIRRC);
      if( (dir = opendir(buf)) == NULL )
            mkdir(buf,0755);
      else
            closedir(dir);

      return TEG_STATUS_SUCCESS;
}

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