Exemplo n.º 1
0
static gboolean gio_handler(GIOChannel *channel,
				 GIOCondition cond, gpointer data)
{
	struct msghdr msg;
	struct iovec iov;
	int sock;
	int len;
	guint8 ctrl[CMSG_SPACE(sizeof(struct timeval))];
	struct cmsghdr *cmsg;
	struct timeval msg_timestamp;

	if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR)) {
		print_error("Sniffer IO error 0x%x\n", cond);

		if (watch > 0)
			g_source_remove(watch);
		watch = 0;
		gio_channel = NULL;

		return FALSE;
	}

	sock = g_io_channel_unix_get_fd(channel);

	memset(&msg, 0, sizeof(struct msghdr));

	msg.msg_control = &ctrl;
	msg.msg_controllen = sizeof(ctrl);

	msg.msg_iov = &iov;
	msg.msg_iovlen = 1;
	iov.iov_base = buffer;
	iov.iov_len = BUFFER_LEN;

	len = recvmsg(sock, &msg, 0);
	if (len < 0) {
		print_error("recv: %s", strerror(errno));
		return FALSE;
	}

	cmsg = CMSG_FIRSTHDR(&msg);
	if (cmsg && cmsg->cmsg_type == SCM_TIMESTAMP)
		memcpy(&msg_timestamp, CMSG_DATA(cmsg), sizeof(struct timeval));
	else
		gettimeofday(&msg_timestamp, NULL);

	llcp_print_pdu(buffer, len, &msg_timestamp);

	pcap_file_write_packet(buffer, len, &msg_timestamp);

	return TRUE;
}
Exemplo n.º 2
0
void packet_callback(u_char *user, const struct pcap_pkthdr *pkthdr, const u_char *packet)
{
    int fd = *(int *)user;
    pcap_file_write_packet(fd, packet, pkthdr->len);
}