terminal-chess: src/server.c@3fa1de896666

     1 /*

     2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

     3  *

     4  * Copyright 2016 Mike Becker. All rights reserved.

     5  *

     6  * Redistribution and use in source and binary forms, with or without

     7  * modification, are permitted provided that the following conditions are met:

     8  *

     9  *   1. Redistributions of source code must retain the above copyright

    10  *      notice, this list of conditions and the following disclaimer.

    11  *

    12  *   2. Redistributions in binary form must reproduce the above copyright

    13  *      notice, this list of conditions and the following disclaimer in the

    14  *      documentation and/or other materials provided with the distribution.

    15  *

    16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

    20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    26  * POSSIBILITY OF SUCH DAMAGE.

    27  *

    28  */

    30 #include "terminal-chess.h"

    31 #include "game.h"

    32 #include <ncurses.h>

    33 #include <errno.h>

    34 #include <string.h>

    36 static int server_open(Server *server, char *port) {

    37     printw("\nListening for client...\n");

    38     refresh();

    39     if (net_create(server, port)) {

    40         addstr("Server creation failed");

    41         return 1;

    42     }

    44     if (net_listen(server)) {

    45         addstr("Listening for client failed");

    46         return 1;

    47     }

    49     return 0;

    50 }

    52 static int server_handshake(Client *client) {

    53     net_send_code(client->fd, NETCODE_VERSION);

    54     if (net_recieve_code(client->fd) != NETCODE_VERSION) {

    55         addstr("Client uses an incompatible software version.");

    56         return 1;

    57     }

    59     addstr("Client connected - transmitting gameinfo...");

    60     refresh();

    62     return 0;

    63 }

    65 int server_run(Settings *settings) {

    66     Server server;

    68     dump_gameinfo(&(settings->gameinfo));

    69     GameState continuegame;

    70     gamestate_init(&continuegame);

    71     if (settings->continuepgn) {

    72         // preload PGN data before handshake

    73         FILE *pgnfile = fopen(settings->continuepgn, "r");

    74         if (pgnfile) {

    75             int result = read_pgn(pgnfile, &continuegame,

    76                 &(settings->gameinfo));

    77             fclose(pgnfile);

    78             if (result) {

    79                 addstr("Invalid PGN file content.\n");

    80                 return 1;

    81             }

    82             if (!is_game_running(&continuegame)) {

    83                 addstr("Game has ended. Use -S to analyze it.\n");

    84                 return 1;

    85             }

    86             addch('\n');

    87             dump_moveinfo(&continuegame);

    88             addch('\n');

    89         } else {

    90             printw("Can't read PGN file (%s)\n", strerror(errno));

    91             return 1;

    92         }

    93     }

    95     if (server_open(&server, settings->port)) {

    96         net_destroy(&server);

    97         return 1;

    98     }

   100     if (server_handshake(server.client)) {

   101         net_destroy(&server);

   102         return 1;

   103     }

   105     int fd = server.client->fd;

   106     if (settings->continuepgn) {

   107         // Continue game, send PGN data

   108         uint16_t mc = 0;

   109         MoveList *movelist = continuegame.movelist;

   110         while (movelist) {

   111             mc++;

   112             movelist = movelist->next;

   113         }

   115         Move* moves = calloc(mc, sizeof(Move));

   117         movelist = continuegame.movelist;

   118         mc = 0;

   119         while (movelist) {

   120             moves[mc] = movelist->move;

   121             mc++;

   122             movelist = movelist->next;

   123         }

   125         size_t pgndata_size = sizeof(GameInfo)+sizeof(mc)+mc*sizeof(Move);

   126         char *pgndata = malloc(pgndata_size);

   127         memcpy(pgndata, &(settings->gameinfo), sizeof(GameInfo));

   128         memcpy(pgndata+sizeof(GameInfo), &mc, sizeof(mc));

   129         memcpy(pgndata+sizeof(GameInfo)+sizeof(mc), moves, mc*sizeof(Move));

   130         free(moves);

   131         net_send_data(fd, NETCODE_PGNDATA, pgndata, pgndata_size);

   132         free(pgndata);

   133     } else {

   134         // Start new game

   135         net_send_data(fd, NETCODE_GAMEINFO,

   136             &(settings->gameinfo), sizeof(GameInfo));

   137     }

   138     addstr("\rClient connected - awaiting challenge acceptance...");

   139     refresh();

   140     int code = net_recieve_code(fd);

   141     if (code == NETCODE_ACCEPT) {

   142         addstr("\rClient connected - challenge accepted.");

   143         clrtoeol();

   144         if (settings->continuepgn) {

   145             game_continue(settings, fd, &continuegame);

   146         } else {

   147             game_start(settings, fd);

   148         }

   149     } else if (code == NETCODE_DECLINE) {

   150         addstr("\rClient connected - challenge declined.");

   151         clrtoeol();

   152     } else if (code == NETCODE_CONNLOST) {

   153         addstr("\rClient connected - but gave no response.");

   154         clrtoeol();

   155     } else {

   156         addstr("\rInvalid client response");

   157         clrtoeol();

   159         net_destroy(&server);

   160         return 1;

   161     }

   163     net_destroy(&server);

   164     return 0;

   165 }

Mercurial > hg > terminal-chess / file revision