94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
/*
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* Copyright (c) 2014 Brian Swetland
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "network.h"
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in_addr_t lookup_hostname(const char *hostname) {
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return inet_addr(hostname);
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}
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static int inet_listen(in_addr_t addr, int type, unsigned port, int shared) {
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struct sockaddr_in sa;
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int s;
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if ((s = socket(AF_INET, type, 0)) < 0) {
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return -1;
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}
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if (shared) {
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int opt = 1;
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setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
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//setsockopt(s, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt));
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}
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memset(&sa, 0, sizeof(sa));
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sa.sin_family = AF_INET;
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sa.sin_port = htons(port);
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sa.sin_addr.s_addr = addr;
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if (bind(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
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close(s);
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return -1;
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}
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return s;
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}
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static int inet_connect(in_addr_t addr, int type, unsigned port) {
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struct sockaddr_in sa;
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int s;
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if ((s = socket(AF_INET, type, 0)) < 0) {
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return -1;
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}
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if (addr == 0xFFFFFFFF) {
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int opt = 1;
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setsockopt(s, SOL_SOCKET, SO_BROADCAST, &opt, sizeof(opt));
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}
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memset(&sa, 0, sizeof(sa));
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sa.sin_family = AF_INET;
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sa.sin_port = htons(port);
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sa.sin_addr.s_addr = addr;
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if (connect(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
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close(s);
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return -1;
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}
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return s;
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}
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int udp_listen(in_addr_t addr, unsigned port, int shared) {
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return inet_listen(addr, SOCK_DGRAM, port, shared);
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}
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int udp_connect(in_addr_t addr, unsigned port) {
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return inet_connect(addr, SOCK_DGRAM, port);
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}
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int tcp_listen(in_addr_t addr, unsigned port) {
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return inet_listen(addr, SOCK_STREAM, port, 0);
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}
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int tcp_connect(in_addr_t addr, unsigned port) {
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return inet_connect(addr, SOCK_STREAM, port);
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}
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