C++ (Cpp) curve25519_alloc_or_maybe_die Examples

Example #1

File: ct_server.c Project: markusa/netsniff-ng_filter

static void *worker(void *self)
{
	int fd, old_state;
	ssize_t ret;
	size_t blen = TUNBUFF_SIZ; //FIXME
	const struct worker_struct *ws = self;
	struct pollfd fds;
	char *buff;

	fds.fd = ws->efd[0];
	fds.events = POLLIN;

	ret = curve25519_alloc_or_maybe_die(ws->c);
	if (ret < 0)
		syslog_panic("Cannot init curve25519!\n");

	buff = xmalloc_aligned(blen, 64);

	syslog(LOG_INFO, "curvetun thread on CPU%u up!\n", ws->cpu);

	pthread_cleanup_push(xfree_func, ws->c);
	pthread_cleanup_push(curve25519_free, ws->c);
	pthread_cleanup_push(xfree_func, buff);

	while (likely(!sigint)) {
		poll(&fds, 1, -1);
		if ((fds.revents & POLLIN) != POLLIN)
			continue;

		pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &old_state);

		while ((ret = read_exact(ws->efd[0], &fd, sizeof(fd), 1)) > 0) {
			if (ret != sizeof(fd)) {
				sched_yield();
				continue;
			}

			ret = ws->handler(fd, ws, buff, blen);
			if (ret)
				write_exact(ws->parent.refd, &fd, sizeof(fd), 1);
		}

		pthread_setcancelstate(old_state, NULL);
	}

	syslog(LOG_INFO, "curvetun thread on CPU%u down!\n", ws->cpu);

	pthread_cleanup_pop(1);
	pthread_cleanup_pop(1);
	pthread_cleanup_pop(1);

	pthread_exit((void *) ((long) ws->cpu));
}

Example #2

File: ct_client.c Project: netoptimizer/netsniff-ng

int client_main(char *home, char *dev, char *host, char *port, int udp)
{
	int fd = -1, tunfd = 0, retry_server = 0;
	int ret, try = 1, i;
	struct addrinfo hints, *ahead, *ai;
	struct pollfd fds[2];
	struct curve25519_proto *p;
	struct curve25519_struct *c;
	char *buff;
	size_t blen = TUNBUFF_SIZ; //FIXME

retry:
	if (!retry_server) {
		openlog("curvetun", LOG_PID | LOG_CONS | LOG_NDELAY, LOG_DAEMON);
		syslog(LOG_INFO, "curvetun client booting!\n");
	}

	c = xmalloc(sizeof(struct curve25519_struct));

	ret = curve25519_alloc_or_maybe_die(c);
	if (ret < 0)
		syslog_panic("Cannot init curve!\n");

	p = get_serv_store_entry_proto_inf();
	if (!p)
		syslog_panic("Cannot proto!\n");

	memset(&hints, 0, sizeof(hints));
	hints.ai_family = PF_UNSPEC;
	hints.ai_socktype = udp ? SOCK_DGRAM : SOCK_STREAM;
	hints.ai_protocol = udp ? IPPROTO_UDP : IPPROTO_TCP;
	hints.ai_flags = AI_NUMERICSERV;

	ret = getaddrinfo(host, port, &hints, &ahead);
	if (ret < 0) {
		syslog(LOG_ERR, "Cannot get address info! Retry!\n");
		curve25519_free(c);
		xfree(c);
		fd = -1;
		retry_server = 1;
		closed_by_server = 0;
		sleep(1);
		goto retry;
	}

	for (ai = ahead; ai != NULL && fd < 0; ai = ai->ai_next) {
		fd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
		if (fd < 0)
			continue;
		ret = connect(fd, ai->ai_addr, ai->ai_addrlen);
		if (ret < 0) {
			syslog(LOG_ERR, "Cannot connect to remote, try %d: %s!\n",
			       try++, strerror(errno));
			close(fd);
			fd = -1;
			continue;
		}

		set_socket_keepalive(fd);
		set_mtu_disc_dont(fd);
		if (!udp)
			set_tcp_nodelay(fd);
	}