Tue, 08 Apr 2014 21:13:28 +0200
fixed some type bugs, uninitialized memory and async input function
universe@1 | 1 | /* |
universe@1 | 2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
universe@1 | 3 | * |
universe@1 | 4 | * Copyright 2014 Mike Becker. All rights reserved. |
universe@1 | 5 | * |
universe@1 | 6 | * Redistribution and use in source and binary forms, with or without |
universe@1 | 7 | * modification, are permitted provided that the following conditions are met: |
universe@1 | 8 | * |
universe@1 | 9 | * 1. Redistributions of source code must retain the above copyright |
universe@1 | 10 | * notice, this list of conditions and the following disclaimer. |
universe@1 | 11 | * |
universe@1 | 12 | * 2. Redistributions in binary form must reproduce the above copyright |
universe@1 | 13 | * notice, this list of conditions and the following disclaimer in the |
universe@1 | 14 | * documentation and/or other materials provided with the distribution. |
universe@1 | 15 | * |
universe@1 | 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
universe@1 | 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
universe@1 | 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
universe@1 | 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
universe@1 | 20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
universe@1 | 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
universe@1 | 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
universe@1 | 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
universe@1 | 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
universe@1 | 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
universe@1 | 26 | * POSSIBILITY OF SUCH DAMAGE. |
universe@1 | 27 | * |
universe@1 | 28 | */ |
universe@1 | 29 | |
universe@1 | 30 | #include <stdlib.h> |
universe@1 | 31 | #include <string.h> |
universe@1 | 32 | #include "network.h" |
universe@1 | 33 | |
universe@2 | 34 | #define new_socket() socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
universe@2 | 35 | |
universe@2 | 36 | int net_create(Server *server, char* port) { |
universe@2 | 37 | server->info = NULL; |
universe@2 | 38 | |
universe@2 | 39 | struct sockaddr_in addr; |
universe@2 | 40 | addr.sin_family = AF_INET; |
universe@2 | 41 | addr.sin_addr.s_addr = INADDR_ANY; |
universe@2 | 42 | addr.sin_port = htons(atoi(port)); |
universe@2 | 43 | |
universe@2 | 44 | server->fd = new_socket(); |
universe@1 | 45 | if (server->fd > -1) { |
universe@1 | 46 | int true = 1; |
universe@1 | 47 | setsockopt(server->fd, SOL_SOCKET, SO_REUSEADDR, &true, sizeof(int)); |
universe@2 | 48 | if (bind(server->fd, (struct sockaddr*)&addr, sizeof(addr))) { |
universe@1 | 49 | server->fd = -1; |
universe@1 | 50 | return 1; |
universe@1 | 51 | } else { |
universe@1 | 52 | return 0; |
universe@1 | 53 | } |
universe@1 | 54 | } else { |
universe@1 | 55 | return 1; |
universe@1 | 56 | } |
universe@1 | 57 | } |
universe@1 | 58 | |
universe@1 | 59 | int getaddrinfo_intrnl(char *host, char *port, struct addrinfo **info) { |
universe@1 | 60 | struct addrinfo hints; |
universe@1 | 61 | memset(&hints, 0, sizeof(hints)); |
universe@1 | 62 | hints.ai_socktype = SOCK_STREAM; |
universe@1 | 63 | hints.ai_protocol = IPPROTO_TCP; |
universe@1 | 64 | |
universe@1 | 65 | return getaddrinfo(host, port, &hints, info); |
universe@1 | 66 | } |
universe@1 | 67 | |
universe@1 | 68 | int net_find(Server *server, char *host, char* port) { |
universe@1 | 69 | memset(server, 0, sizeof(Server)); |
universe@1 | 70 | server->fd = -1; |
universe@1 | 71 | |
universe@1 | 72 | return getaddrinfo_intrnl(host, port, &(server->info)); |
universe@1 | 73 | } |
universe@1 | 74 | |
universe@1 | 75 | int net_listen(Server *server) { |
universe@1 | 76 | listen(server->fd, 1); |
universe@1 | 77 | Client* client = calloc(1, sizeof(Client)); |
universe@1 | 78 | client->fd = -1; |
universe@1 | 79 | server->client = client; |
universe@1 | 80 | |
universe@1 | 81 | client->fd = accept(server->fd, |
universe@1 | 82 | &(client->address), &(client->address_len)); |
universe@1 | 83 | |
universe@1 | 84 | return client->fd == -1; |
universe@1 | 85 | } |
universe@1 | 86 | |
universe@1 | 87 | int net_connect(Server *server) { |
universe@2 | 88 | |
universe@2 | 89 | Client* client = calloc(1, sizeof(Client)); |
universe@2 | 90 | client->fd = -1; |
universe@2 | 91 | server->fd = new_socket(); |
universe@2 | 92 | server->client = client; |
universe@2 | 93 | |
universe@2 | 94 | if (server->fd == -1) { |
universe@1 | 95 | return 1; |
universe@1 | 96 | } |
universe@1 | 97 | |
universe@2 | 98 | return connect(server->fd, server->info->ai_addr, server->info->ai_addrlen); |
universe@1 | 99 | } |
universe@1 | 100 | |
universe@1 | 101 | int net_destroy(Server *server) { |
universe@1 | 102 | if (server->info) { |
universe@1 | 103 | freeaddrinfo(server->info); |
universe@1 | 104 | } |
universe@1 | 105 | if (server->client) { |
universe@1 | 106 | shutdown(server->client->fd, SHUT_RDWR); |
universe@1 | 107 | free(server->client); |
universe@1 | 108 | } |
universe@1 | 109 | if (server->fd > -1) { |
universe@1 | 110 | return shutdown(server->fd, SHUT_RDWR); |
universe@1 | 111 | } |
universe@1 | 112 | |
universe@1 | 113 | return EXIT_SUCCESS; |
universe@1 | 114 | } |
universe@2 | 115 | |
universe@22 | 116 | void net_send_code(int socket, uint8_t code) { |
universe@22 | 117 | send(socket, &code, sizeof(uint8_t), 0); |
universe@3 | 118 | } |
universe@3 | 119 | |
universe@22 | 120 | void net_send_data(int socket, uint8_t code, void *data, size_t len) { |
universe@22 | 121 | uint8_t pkg[len+1]; |
universe@22 | 122 | pkg[0] = code; |
universe@22 | 123 | memcpy(pkg+1, data, len); |
universe@22 | 124 | send(socket, pkg, len+1, 0); |
universe@2 | 125 | } |
universe@2 | 126 | |
universe@22 | 127 | uint8_t net_recieve_code(int socket) { |
universe@22 | 128 | uint8_t code; |
universe@22 | 129 | recv(socket, &code, sizeof(uint8_t), 0); |
universe@22 | 130 | return code; |
universe@2 | 131 | } |
universe@2 | 132 | |
universe@2 | 133 | void net_recieve_data(int socket, void *data, size_t len) { |
universe@2 | 134 | recv(socket, data, len, 0); |
universe@2 | 135 | } |