terminal-chess: src/server.c@4eda5df55f86

     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             long position = ftell(pgnfile);

    78             fclose(pgnfile);

    79             if (result) {

    80                 printw("Invalid PGN file content at position %ld:\n%s\n",

    81                         position, pgn_error_str(result));

    82                 return 1;

    83             }

    84             if (!is_game_running(&continuegame)) {

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

    86                 return 1;

    87             }

    88             addch('\n');

    89             dump_moveinfo(&continuegame);

    90             addch('\n');

    91         } else {

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

    93             return 1;

    94         }

    95     }

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

    98         net_destroy(&server);

    99         return 1;

   100     }

   102     if (server_handshake(server.client)) {

   103         net_destroy(&server);

   104         return 1;

   105     }

   107     int fd = server.client->fd;

   108     if (settings->continuepgn) {

   109         /* Continue game, send PGN data */

   110         uint16_t mc = 0;

   111         MoveList *movelist = continuegame.movelist;

   112         while (movelist) {

   113             mc++;

   114             movelist = movelist->next;

   115         }

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

   119         movelist = continuegame.movelist;

   120         mc = 0;

   121         while (movelist) {

   122             moves[mc] = movelist->move;

   123             mc++;

   124             movelist = movelist->next;

   125         }

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

   128         char *pgndata = malloc(pgndata_size);

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

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

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

   132         free(moves);

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

   134         free(pgndata);

   135     } else {

   136         /* Start new game */

   137         net_send_data(fd, NETCODE_GAMEINFO,

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

   139     }

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

   141     refresh();

   142     int code = net_recieve_code(fd);

   143     if (code == NETCODE_ACCEPT) {

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

   145         clrtoeol();

   146         if (settings->continuepgn) {

   147             game_continue(settings, fd, &continuegame);

   148         } else {

   149             game_start(settings, fd);

   150         }

   151     } else if (code == NETCODE_DECLINE) {

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

   153         clrtoeol();

   154     } else if (code == NETCODE_CONNLOST) {

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

   156         clrtoeol();

   157     } else {

   158         addstr("\rInvalid client response");

   159         clrtoeol();

   161         net_destroy(&server);

   162         return 1;

   163     }

   165     net_destroy(&server);

   166     return 0;

   167 }

Mercurial > hg > terminal-chess / file revision