-rename header

1 files changed, 151 insertions, 0 deletions

diff --git a/src/include/gnunet_tun_lib.h b/src/include/gnunet_tun_lib.h
new file mode 100644
index 000000000..ca521db3b
--- /dev/null
+++ b/src/include/gnunet_tun_lib.h
@@ -0,0 +1,151 @@
+/*
+     This file is part of GNUnet.
+     (C) 2010, 2011, 2012 Christian Grothoff
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 3, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file include/gnunet_tun_lib.h
+ * @brief standard TCP/IP network structs and IP checksum calculations for TUN interaction
+ * @author Philipp Toelke
+ * @author Christian Grothoff
+ *
+ * TODO:
+ * - currently does not follow our naming conventions
+ */
+#ifndef TCPIP_TUN_H
+#define TCPIP_TUN_H
+
+#include "platform.h"
+#include "gnunet_util_lib.h"
+
+
+/* see http://www.iana.org/assignments/ethernet-numbers */
+#ifndef ETH_P_IPV4
+#define ETH_P_IPV4 0x0800
+#endif
+
+#ifndef ETH_P_IPV6
+#define ETH_P_IPV6 0x86DD
+#endif
+
+
+GNUNET_NETWORK_STRUCT_BEGIN
+/**
+ * Header from Linux TUN interface.
+ */ 
+struct tun_header
+{
+  /**
+   * Some flags (unused).
+   */ 
+  uint16_t flags;
+
+  /**
+   * Here we get an ETH_P_-number.
+   */
+  uint16_t proto;
+};
+
+
+/**
+ * Standard IPv4 header.
+ */
+struct ip4_header
+{
+  unsigned header_length:4 GNUNET_PACKED;
+  unsigned version:4 GNUNET_PACKED;
+  uint8_t diff_serv;
+  uint16_t total_length GNUNET_PACKED;
+  uint16_t identification GNUNET_PACKED;
+  unsigned flags:3 GNUNET_PACKED;
+  unsigned fragmentation_offset:13 GNUNET_PACKED;
+  uint8_t ttl;
+  uint8_t protocol;
+  uint16_t checksum GNUNET_PACKED;
+  struct in_addr source_address GNUNET_PACKED;
+  struct in_addr destination_address GNUNET_PACKED;
+};
+
+/**
+ * Standard IPv6 header.
+ */
+struct ip6_header
+{
+  unsigned traffic_class_h:4 GNUNET_PACKED;
+  unsigned version:4 GNUNET_PACKED;
+  unsigned traffic_class_l:4 GNUNET_PACKED;
+  unsigned flow_label:20 GNUNET_PACKED;
+  uint16_t payload_length GNUNET_PACKED;
+  uint8_t next_header;
+  uint8_t hop_limit;
+  struct in6_addr source_address GNUNET_PACKED;
+  struct in6_addr destination_address GNUNET_PACKED;
+};
+
+#define TCP_FLAG_SYN 2
+
+/**
+ * TCP packet header (FIXME: rename!)
+ */
+struct tcp_packet
+{
+  unsigned spt:16 GNUNET_PACKED;
+  unsigned dpt:16 GNUNET_PACKED;
+  unsigned seq:32 GNUNET_PACKED;
+  unsigned ack:32 GNUNET_PACKED;
+  unsigned off:4 GNUNET_PACKED;
+  unsigned rsv:4 GNUNET_PACKED;
+  unsigned flg:8 GNUNET_PACKED;
+  unsigned wsz:16 GNUNET_PACKED;
+  unsigned crc:16 GNUNET_PACKED;
+  unsigned urg:16 GNUNET_PACKED;
+};
+
+/**
+ * UDP packet header  (FIXME: rename!)
+ */
+struct udp_packet
+{
+  uint16_t spt GNUNET_PACKED;
+  uint16_t dpt GNUNET_PACKED;
+  uint16_t len GNUNET_PACKED;
+  uint16_t crc GNUNET_PACKED;
+};
+
+/**
+ * DNS header.
+ */
+struct dns_header
+{
+  uint16_t id GNUNET_PACKED;
+  uint16_t flags GNUNET_PACKED;
+  uint16_t qdcount GNUNET_PACKED;
+  uint16_t ancount GNUNET_PACKED;
+  uint16_t nscount GNUNET_PACKED;
+  uint16_t arcount GNUNET_PACKED;
+};
+GNUNET_NETWORK_STRUCT_END
+
+
+
+
+
+
+
+
+#endif