/*
This file is part of GNUnet.
- (C) 2010-2013 Christian Grothoff
+ Copyright (C) 2010-2013 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
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.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, 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
+ *
+ * @file
+ * Standard TCP/IP network structs and IP checksum calculations for TUN interaction
+ *
+ * @defgroup tun TUN library
+ * Standard TCP/IP network structs and IP checksum calculations for TUN interaction
+ * @{
*/
#ifndef GNUNET_TUN_LIB_H
#define GNUNET_TUN_LIB_H
} GNUNET_GCC_STRUCT_LAYOUT;
+/**
+ * TCP flags.
+ */
+#define GNUNET_TUN_TCP_FLAGS_FIN 1
+#define GNUNET_TUN_TCP_FLAGS_SYN 2
+#define GNUNET_TUN_TCP_FLAGS_RST 4
+#define GNUNET_TUN_TCP_FLAGS_PSH 8
+#define GNUNET_TUN_TCP_FLAGS_ACK 16
+#define GNUNET_TUN_TCP_FLAGS_URG 32
+#define GNUNET_TUN_TCP_FLAGS_ECE 64
+#define GNUNET_TUN_TCP_FLAGS_CWR 128
+
/**
* TCP packet header.
*/
* the network.
*
* @param service_name a string
- * @param hc corresponding hash
+ * @param[out] hc corresponding hash
*/
void
GNUNET_TUN_service_name_to_hash (const char *service_name,
struct GNUNET_HashCode *hc);
+
+/**
+ * Check if two sockaddrs are equal.
+ *
+ * @param sa one address
+ * @param sb another address
+ * @param include_port also check ports
+ * @return #GNUNET_YES if they are equal
+ */
+int
+GNUNET_TUN_sockaddr_cmp (const struct sockaddr *sa,
+ const struct sockaddr *sb,
+ int include_port);
+
+
+/**
+ * Compute the CADET port given a service descriptor
+ * (returned from #GNUNET_TUN_service_name_to_hash) and
+ * a TCP/UDP port @a ip_port.
+ *
+ * @param desc service shared secret
+ * @param ip_port TCP/UDP port, use 0 for ICMP
+ * @param[out] cadet_port CADET port to use
+ */
+void
+GNUNET_TUN_compute_service_cadet_port (const struct GNUNET_HashCode *desc,
+ uint16_t ip_port,
+ struct GNUNET_HashCode *cadet_port);
+
#endif
+
+/** @} */ /* end of group */