100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
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#define _POSIX_C_SOURCE 200112L
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#include <arpa/inet.h>
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#include <fcntl.h>
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#include <linux/if.h>
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#include <linux/if_tun.h>
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#include <netdb.h>
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#include <netinet/in.h>
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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 <string.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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void ext_out(int port) {
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int server = socket(AF_INET6, SOCK_STREAM, 0);
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if (server == -1) {
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perror("socket");
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exit(1);
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}
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struct sockaddr_in6 server_addr = {0};
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server_addr.sin6_family = AF_INET6;
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server_addr.sin6_port = htons(port);
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server_addr.sin6_addr = in6addr_any;
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if (bind(server, (struct sockaddr *) &server_addr, sizeof server_addr) == -1) {
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perror("bind");
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exit(1);
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}
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char server_addr_pretty[INET6_ADDRSTRLEN] = "";
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inet_ntop(AF_INET6, &(server_addr.sin6_addr), server_addr_pretty, sizeof server_addr_pretty);
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printf("Écoute sur : %s\n", server_addr_pretty);
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if (listen(server, SOMAXCONN) == -1) {
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perror("listen");
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exit(1);
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}
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struct sockaddr_in6 client_addr;
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socklen_t client_addr_len;
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puts("Attente d’un client.");
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int client = accept(server, (struct sockaddr *) &client_addr, &client_addr_len);
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char client_addr_pretty[INET6_ADDRSTRLEN] = "";
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inet_ntop(AF_INET6, &(client_addr.sin6_addr), client_addr_pretty, sizeof client_addr_pretty);
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printf("Client connecté : %s\n", client_addr_pretty);
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char buf[1024];
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while (1) {
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ssize_t n = read(client, buf, sizeof buf);
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write(1, buf, n);
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}
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close(client);
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close(server);
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}
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void ext_in(const char addr[], int port, int in) {
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int s = socket(AF_INET6, SOCK_STREAM, 0);
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if (s == -1) {
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perror("socket");
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exit(1);
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}
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struct sockaddr_in6 sa = {0};
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sa.sin6_family = AF_INET6;
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sa.sin6_port = htons(port);
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inet_pton(AF_INET6, addr, &sa.sin6_addr);
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puts("Connexion.");
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if (connect(s, (struct sockaddr *) &sa, sizeof sa) == -1) {
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perror("connect");
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exit(1);
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}
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char addr_pretty[INET6_ADDRSTRLEN] = "";
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inet_ntop(AF_INET6, &(sa.sin6_addr), addr_pretty, sizeof addr_pretty);
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printf("Connecté à : %s\n", addr_pretty);
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char buf[1024];
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while (1) {
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ssize_t n = read(in, buf, sizeof buf);
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if (n == -1) {
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perror("read");
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exit(1);
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}
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n = write(s, buf, n);
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if (n == -1) {
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perror("write");
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exit(1);
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}
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}
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close(s);
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}
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