146 lines
4.3 KiB
C
146 lines
4.3 KiB
C
// =========================================
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// | SilverMUD Client - main.c |
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// | Copyright (C) 2023, Barra Ó Catháin |
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// | See end of file for copyright notice. |
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// =========================================
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#include <stdio.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <pthread.h>
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#include <ncurses.h>
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#include <stdbool.h>
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#include <gnutls/gnutls.h>
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#include "../config.h"
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#include "../messages.h"
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#include "client-drawing.h"
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#include "receiving-thread.h"
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int main (int argc, char ** argv)
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{
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// Print a welcome message:
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printf("SilverMUD Client - Starting Now.\n"
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"================================\n");
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// Create a socket for communicating with the server:
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int serverSocket = socket(AF_INET, SOCK_STREAM, 0);
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if (serverSocket == -1)
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{
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printf("Socket creation failed. Aborting.\n");
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exit(EXIT_FAILURE);
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}
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// Set up the server address structure to point to the server:
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struct sockaddr_in serverAddress;
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serverAddress.sin_family = AF_INET;
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serverAddress.sin_addr.s_addr = inet_addr("127.0.0.1");
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serverAddress.sin_port = htons(5000);
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// Connect to the server:
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if (connect(serverSocket, (struct sockaddr *)&serverAddress, sizeof(struct sockaddr_in)) != 0)
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{
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printf("Failed to connect to the server. Aborting.\n");
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exit(EXIT_FAILURE);
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}
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// Set up a GnuTLS session and handshake with the server:
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gnutls_session_t tlsSession = NULL;
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if (gnutls_init(&tlsSession, GNUTLS_CLIENT) < 0)
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{
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exit(EXIT_FAILURE);
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}
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gnutls_anon_client_credentials_t clientKey = NULL;
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gnutls_anon_allocate_client_credentials(&clientKey);
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gnutls_credentials_set(tlsSession, GNUTLS_CRD_ANON, &clientKey);
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gnutls_transport_set_int(tlsSession, serverSocket);
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gnutls_priority_set_direct(tlsSession, "PERFORMANCE:+ANON-ECDH:+ANON-DH", NULL);
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gnutls_handshake_set_timeout(tlsSession, GNUTLS_DEFAULT_HANDSHAKE_TIMEOUT);
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int returnValue = -1;
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do
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{
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returnValue = gnutls_handshake(tlsSession);
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}
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while (returnValue < 0 && gnutls_error_is_fatal(returnValue) == 0);
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// Initialize ncurses:
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initscr();
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keypad(stdscr, TRUE);
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if (!has_colors())
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{
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endwin();
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exit(EXIT_FAILURE);
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}
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// Enable colours:
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start_color();
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use_default_colors();
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init_pair(1, COLOR_GREEN, -1);
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init_pair(2, COLOR_YELLOW, -1);
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init_pair(3, COLOR_RED, -1);
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init_pair(4, COLOR_BLUE, -1);
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init_pair(5, COLOR_CYAN, -1);
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init_pair(6, COLOR_MAGENTA, -1);
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// Variables needed for the main loop:
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int height, width;
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getmaxyx(stdscr, height, width);
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struct ClientToServerMessage message;
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WINDOW * chatWindow, * gameWindow, * inputWindow;
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inputWindow = newwin(1, width - 2, height - 1, 1);
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gameWindow = newwin((height / 2) - 1, width - 2, 1, 1);
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chatWindow = newwin((height / 2) - 3, width - 2, (height / 2) + 1, 1);
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scrollok(gameWindow, TRUE);
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scrollok(chatWindow, TRUE);
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scrollok(inputWindow, TRUE);
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redrawClientLayout(gameWindow, chatWindow, inputWindow);
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struct ReceivingThreadArguments receivingThreadArguments;
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receivingThreadArguments.chatWindow = chatWindow;
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receivingThreadArguments.gameWindow = gameWindow;
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receivingThreadArguments.inputWindow = inputWindow;
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receivingThreadArguments.session = tlsSession;
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pthread_t receivingThread;
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pthread_create(&receivingThread, NULL, receivingThreadHandler, &receivingThreadArguments);
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while (true)
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{
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wgetnstr(inputWindow, message.content, 1024);
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if (message.content[0] != '\0')
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{
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gnutls_record_send(tlsSession, &message, 1024);
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}
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}
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// Return a successful status code to the operating system:
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return 0;
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}
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// ============================================
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// | End of main.c, copyright notice follows. |
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// ============================================
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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