src/client.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2016 Mike Becker. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include "input.h"
#include "game.h"
#include "network.h"
#include "chess/pgn.h"
#include <ncurses.h>
#include <stdlib.h>

static int client_connect(Server *server, char *host, char *port) {
    if (net_find(server, host, port)) {
        addstr("Can't find server");
        return 1;
    }

    if (net_connect(server)) {
        addstr("Can't connect to server");
        return 1;
    }
    
    return 0;
}

static int client_handshake(Server *server) {
    if (net_recieve_code(server->fd) != NETCODE_VERSION) {
        addstr("Server uses an incompatible software version.");
        return 1;
    } else {
        net_send_code(server->fd, NETCODE_VERSION);
    }

    printw("Connection established!\n\n");
    refresh();
    
    return 0;
}

int client_run(Settings *settings) {
    Server server;

    if (client_connect(&server, settings->serverhost, settings->port)) {
        net_destroy(&server);
        return 1;
    }

    if (client_handshake(&server)) {
        net_destroy(&server);
        return 1;
    }

    uint8_t code = net_recieve_code(server.fd);
    if (code == NETCODE_GAMEINFO) {
        /* Start new game */
        net_recieve_data(server.fd, &(settings->gameinfo), sizeof(GameInfo));
        dump_gameinfo(&(settings->gameinfo));
        if (prompt_yesno("Accept challenge")) {
            net_send_code(server.fd, NETCODE_ACCEPT);
            game_start(settings, server.fd);
        } else {
            net_send_code(server.fd, NETCODE_DECLINE);
        }
    } else if (code == NETCODE_PGNDATA) {
        net_recieve_data(server.fd, &(settings->gameinfo), sizeof(GameInfo));
        dump_gameinfo(&(settings->gameinfo));
        uint16_t mc;
        net_recieve_data(server.fd, &mc, sizeof(mc));
        Move *moves = calloc(mc, sizeof(Move));
        net_recieve_data(server.fd, moves, mc*sizeof(Move));
        GameState continuegame;
        gamestate_init(&continuegame);
        for (size_t i = 0 ; i < mc ; i++) {
            apply_move(&continuegame, &(moves[i]));
        }
        free(moves);
        addch('\n');
        dump_moveinfo(&continuegame);
        if (prompt_yesno(
                "\n\nServer wants to continue a game. Accept challenge")) {
            net_send_code(server.fd, NETCODE_ACCEPT);
            game_continue(settings, server.fd, &continuegame);
        } else {
            net_send_code(server.fd, NETCODE_DECLINE);
        }
    } else {
        addstr("Server sent invalid gameinfo.");
        net_destroy(&server);
        return 1;
    }
    
    net_destroy(&server);
    return 0;
}