92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/*
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* Copyright (C) 2022 Camden Dixie O'Brien
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*
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* This program is free software: you can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this program. If not, see
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* <https://www.gnu.org/licenses/>.
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*/
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#include <errno.h>
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#include <netinet/in.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <sys/socket.h>
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#include <unistd.h>
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static bool exit_requested = false;
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void handle_exit_signal(int signum)
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{
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(void)signum;
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exit_requested = true;
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}
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int main(int argc, char *argv[])
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{
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(void)argc;
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(void)argv;
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if (signal(SIGTERM, handle_exit_signal) == SIG_ERR) {
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fprintf(stderr, "Failed to register SIGTERM signal handler\n");
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return 1;
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}
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if (signal(SIGINT, handle_exit_signal) == SIG_ERR) {
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fprintf(stderr, "Failed to register SIGINT signal handler\n");
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return 1;
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}
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int sfd = socket(AF_INET6, SOCK_STREAM, 0);
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if (sfd == -1) {
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fprintf(stderr, "Failed to open socket\n");
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return 1;
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}
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const struct sockaddr_in6 haddr = {
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.sin6_family = AF_INET6,
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.sin6_port = htons(7070),
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.sin6_addr = IN6ADDR_LOOPBACK_INIT,
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};
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if (bind(sfd, (const struct sockaddr *)&haddr, sizeof(haddr)) == -1) {
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fprintf(stderr, "Error binding socket to address\n");
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return 1;
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}
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if (listen(sfd, 8) == -1) {
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fprintf(stderr, "Error attempting to listen on socket\n");
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return 1;
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}
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struct sockaddr_in6 paddr;
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socklen_t paddr_size = sizeof(paddr);
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int cfd;
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while (!exit_requested) {
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cfd = accept(sfd, (struct sockaddr *)&paddr, &paddr_size);
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if (cfd == -1) {
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if (errno != EINTR) {
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fprintf(stderr, "Error accepting connection\n");
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return 1;
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} else {
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continue;
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}
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}
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printf("Accepted connection\n");
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close(cfd);
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}
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close(sfd);
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return 0;
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}
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