terminal-chess: src/network.c@0cedda2544da

added return code to move validation (for more informative messages) + fixed a bug where simulations added movelist items to the original gamestate

     1 /*

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

     3  *

     4  * Copyright 2014 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 <stdlib.h>

    31 #include <string.h>

    32 #include "network.h"

    34 #define new_socket() socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

    36 int net_create(Server *server, char* port) {

    37     server->info = NULL;

    39     struct sockaddr_in addr;

    40     addr.sin_family = AF_INET;

    41     addr.sin_addr.s_addr = INADDR_ANY;

    42     addr.sin_port = htons(atoi(port));

    44     server->fd = new_socket();

    45     if (server->fd > -1) {

    46         int true = 1;

    47         setsockopt(server->fd, SOL_SOCKET, SO_REUSEADDR, &true, sizeof(int));

    48         if (bind(server->fd, (struct sockaddr*)&addr, sizeof(addr))) {

    49             server->fd = -1;

    50             return 1;

    51         } else {

    52             return 0;

    53         }

    54     } else {

    55         return 1;

    56     }

    57 }

    59 static int getaddrinfo_intrnl(char *host, char *port, struct addrinfo **info) {

    60     struct addrinfo hints;

    61     memset(&hints, 0, sizeof(hints));

    62     hints.ai_socktype = SOCK_STREAM;

    63     hints.ai_protocol = IPPROTO_TCP;

    65     return getaddrinfo(host, port, &hints, info);

    66 }

    68 int net_find(Server *server, char *host, char* port) {

    69     memset(server, 0, sizeof(Server));

    70     server->fd = -1;

    72     return getaddrinfo_intrnl(host, port, &(server->info));

    73 }

    75 int net_listen(Server *server) {

    76     listen(server->fd, 1);

    77     Client* client = calloc(1, sizeof(Client));

    78     client->fd = -1;

    79     server->client = client;

    81     client->fd = accept(server->fd,

    82         &(client->address), &(client->address_len));

    84     return client->fd == -1;

    85 }

    87 int net_connect(Server *server) {

    89     Client* client = calloc(1, sizeof(Client));

    90     client->fd = -1;

    91     server->fd = new_socket();

    92     server->client = client;

    94     if (server->fd == -1) {

    95         return 1;

    96     }

    98     return connect(server->fd, server->info->ai_addr, server->info->ai_addrlen);

    99 }

   101 int net_destroy(Server *server) {

   102     if (server->info) {

   103         freeaddrinfo(server->info);

   104     }

   105     if (server->client) {

   106         shutdown(server->client->fd, SHUT_RDWR);

   107         free(server->client);

   108     }

   109     if (server->fd > -1) {

   110         return shutdown(server->fd, SHUT_RDWR);

   111     }

   113     return EXIT_SUCCESS;

   114 }

   116 void net_send_code(int socket, uint8_t code) {

   117     send(socket, &code, sizeof(uint8_t), 0);

   118 }

   120 void net_send_data(int socket, uint8_t code, void *data, size_t len) {

   121     uint8_t pkg[len+1];

   122     pkg[0] = code;

   123     memcpy(pkg+1, data, len);

   124     send(socket, pkg, len+1, 0);

   125 }

   127 uint8_t net_recieve_code(int socket) {

   128     uint8_t code;

   129     if (recv(socket, &code, sizeof(code), 0) == sizeof(code)) {

   130         return code;

   131     } else {

   132         return NETCODE_CONNLOST;

   133     }

   134 }

   136 void net_recieve_data(int socket, void *data, size_t len) {

   137     recv(socket, data, len, MSG_WAITALL);

   138 }

Mercurial > hg > terminal-chess / file revision