#ifndef MESH_H_
#define MESH_H_
+
+#ifdef __cplusplus
+extern "C"
+{
+#if 0 /* keep Emacsens' auto-indent happy */
+}
+#endif
+#endif
+
#include <stdint.h>
#define MESH_DEBUG GNUNET_YES
-
#include "platform.h"
-#include "gnunet_common.h"
#include "gnunet_util_lib.h"
#include "gnunet_peer_lib.h"
#include "gnunet_core_service.h"
#include "gnunet_protocols.h"
#include <gnunet_mesh_service.h>
-/******************************************************************************/
-/******************** MESH LOCAL MESSAGES *************************/
-/******************************************************************************/
-/* Any API call should be documented in the folowing table under API CALL.
- * Also, any message type should be documented in the following table, with the
- * associated event.
- *
- * API CALL (GNUNET_MESH_*) MESSAGE USED
- * ------------------------ ------------
- * connect GNUNET_MESH_ClientConnect
- * disconnect None (network level disconnect)
- *
- * tunnel_create GNUNET_MESH_TunnelMessage
- * tunnel_destroy GNUNET_MESH_TunnelMessage
- *
- * peer_request_connect_add GNUNET_MESH_PeerControl
- * peer_request_connect_del GNUNET_MESH_PeerControl
- * peer_request_connect_by_type GNUNET_MESH_ConnectPeerByType
- *
- * notify_transmit_ready *GNUNET_MESH_TransmitReady?*
- * notify_transmit_ready_cancel None (clear of internal data structures)
- *
- *
- *
- * EVENT MESSAGE USED
- * ----- ------------
- * data GNUNET_MESH_Data OR
- * GNUNET_MESH_DataBroadcast
- * new incoming tunnel GNUNET_MESH_PeerControl
- * peer connects to a tunnel GNUNET_MESH_PeerControl
- * peer disconnects from a tunnel GNUNET_MESH_PeerControl
- */
-
/******************************************************************************/
/************************** CONSTANTS ******************************/
/******************************************************************************/
-#define GNUNET_MESH_LOCAL_TUNNEL_ID_CLI 0x80000000
-#define GNUNET_MESH_LOCAL_TUNNEL_ID_SERV 0xB0000000
+#define GNUNET_MESH_LOCAL_CHANNEL_ID_CLI 0x80000000
+#define GNUNET_MESH_LOCAL_CHANNEL_ID_SERV 0xB0000000
+
+#define HIGH_PID 0xFFFF0000
+#define LOW_PID 0x0000FFFF
+
+#define PID_OVERFLOW(pid, max) (pid > HIGH_PID && max < LOW_PID)
/******************************************************************************/
/************************** MESSAGES ******************************/
* sizeof(uint16_t) * types
*/
struct GNUNET_MessageHeader header;
- uint16_t applications GNUNET_PACKED;
- uint16_t types GNUNET_PACKED;
- /* uint16_t list_apps[applications] */
- /* uint16_t list_types[types] */
+ /* uint32_t list_ports[] */
};
/**
- * Type for tunnel numbering.
- * - Local tunnel numbers given by the service (incoming) are >= 0xB0000000
- * - Local tunnel numbers given by the client (created) are >= 0x80000000
- * - Global tunnel numbers are < 0x80000000
+ * Type for channel numbering.
+ * - Local channel numbers given by the service (incoming) are >= 0xB0000000
+ * - Local channel numbers given by the client (created) are >= 0x80000000
+ * - Global channel numbers are < 0x80000000
*/
-typedef uint32_t MESH_TunnelNumber;
+typedef uint32_t MESH_ChannelNumber;
+
/**
- * Message for a client to create and destroy tunnels.
+ * Message for a client to create and destroy channels.
*/
-struct GNUNET_MESH_TunnelMessage
+struct GNUNET_MESH_ChannelMessage
{
/**
* Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_TUNNEL_[CREATE|DESTROY]
- * GNUNET_MESSAGE_TYPE_MESH_LOCAL_TUNNEL_[MAX|MIN]
*
- * Size: sizeof(struct GNUNET_MESH_TunnelMessage)
+ * Size: sizeof(struct GNUNET_MESH_ChannelMessage)
*/
struct GNUNET_MessageHeader header;
/**
- * ID of a tunnel controlled by this client.
+ * ID of a channel controlled by this client.
*/
- MESH_TunnelNumber tunnel_id GNUNET_PACKED;
-};
-
+ MESH_ChannelNumber channel_id GNUNET_PACKED;
-/**
- * Message for the service to let a client know about created tunnels.
- */
-struct GNUNET_MESH_TunnelNotification
-{
/**
- * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_TUNNEL_CREATE
- *
- * Size: sizeof(struct GNUNET_MESH_TunnelMessage)
+ * Channel's peer
*/
- struct GNUNET_MessageHeader header;
+ struct GNUNET_PeerIdentity peer;
/**
- * ID of a tunnel controlled by this client.
+ * Port of the channel.
*/
- MESH_TunnelNumber tunnel_id GNUNET_PACKED;
+ uint32_t port GNUNET_PACKED;
/**
- * Peer at the other end, if any
+ * Options.
*/
- struct GNUNET_PeerIdentity peer;
+ uint32_t opt GNUNET_PACKED;
};
+
/**
- * Message for:
- * - request adding and deleting peers from a tunnel
- * - notify the client that peers have connected:
- * -- requested
- * -- unrequested (new incoming tunnels)
- * - notify the client that peers have disconnected
+ * Message for mesh data traffic.
*/
-struct GNUNET_MESH_PeerControl
+struct GNUNET_MESH_LocalData
{
-
/**
- * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_CONNECT_PEER_[ADD|DEL|[UN]BLACKLIST]
- * (client to service, client created tunnel)
- * GNUNET_MESSAGE_TYPE_MESH_LOCAL_PEER_[CONNECTED|DISCONNECTED]
- * (service to client)
- *
- * Size: sizeof(struct GNUNET_MESH_PeerControl)
+ * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_DATA
*/
struct GNUNET_MessageHeader header;
/**
- * ID of a tunnel controlled by this client.
+ * ID of the channel
*/
- MESH_TunnelNumber tunnel_id GNUNET_PACKED;
+ uint32_t id GNUNET_PACKED;
/**
- * Peer to connect/disconnect.
+ * Payload follows
*/
- struct GNUNET_PeerIdentity peer;
};
/**
- * Message for connecting to peers offering a service, by service number.
+ * Message to allow the client send more data to the service
+ * (always service -> client).
*/
-struct GNUNET_MESH_ConnectPeerByType
+struct GNUNET_MESH_LocalAck
{
/**
- * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_CONNECT_PEER_BY_TYPE |
- * GNUNET_MESSAGE_TYPE_MESH_LOCAL_DISCONNECT_PEER_BY_TYPE
- *
- * Size: sizeof(struct GNUNET_MESH_ConnectPeerByType)
+ * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_ACK
*/
struct GNUNET_MessageHeader header;
/**
- * ID of a tunnel controlled by this client.
+ * ID of the channel allowed to send more data.
*/
- MESH_TunnelNumber tunnel_id GNUNET_PACKED;
+ MESH_ChannelNumber channel_id GNUNET_PACKED;
- /**
- * Type specification
- */
- GNUNET_MESH_ApplicationType type GNUNET_PACKED;
};
/**
- * Message for connecting to peers offering a service, by service string.
+ * Message to inform the client about channels in the service.
*/
-struct GNUNET_MESH_ConnectPeerByString
+struct GNUNET_MESH_LocalInfo
{
- /**
- * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_PEER_ADD_BY_STRING
- *
- * Size: sizeof(struct GNUNET_MESH_ConnectPeerByString) + strlen (string)
- */
+ /**
+ * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_INFO[_TUNNEL,_PEER]
+ */
struct GNUNET_MessageHeader header;
- /**
- * ID of a tunnel controlled by this client.
- */
- MESH_TunnelNumber tunnel_id GNUNET_PACKED;
+ /**
+ * ID of the channel allowed to send more data.
+ */
+ MESH_ChannelNumber channel_id GNUNET_PACKED;
- /* String describing the service */
+ /**
+ * ID of the owner of the channel (can be local peer).
+ */
+// struct GNUNET_PeerIdentity owner;
+
+ /**
+ * ID of the destination of the channel (can be local peer).
+ */
+ struct GNUNET_PeerIdentity peer;
};
/**
- * Message to allow the client send more data to the service
- * (always service -> client).
+ * Message to inform the client about one of the peers in the service.
*/
-struct GNUNET_MESH_LocalAck
+struct GNUNET_MESH_LocalInfoPeer
{
- /**
- * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_ACK
- */
+ /**
+ * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_INFO_PEER[S]
+ */
struct GNUNET_MessageHeader header;
- /**
- * ID of the tunnel allowed to send more data.
- */
- MESH_TunnelNumber tunnel_id GNUNET_PACKED;
+ /**
+ * Number of paths.
+ */
+ uint16_t paths GNUNET_PACKED;
- /**
- * ID of the last packet allowed.
- */
- uint32_t max_pid GNUNET_PACKED;
+ /**
+ * Do we have a tunnel toward this peer?
+ */
+ int16_t tunnel GNUNET_PACKED;
+
+ /**
+ * ID of the destination of the tunnel (can be local peer).
+ */
+ struct GNUNET_PeerIdentity destination;
+
+ /* If type == PEER (no 'S'): GNUNET_PeerIdentity paths[]
+ * (each path ends in destination) */
+};
+
+/**
+ * Message to inform the client about one of the tunnels in the service.
+ */
+struct GNUNET_MESH_LocalInfoTunnel
+{
+ /**
+ * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_INFO_TUNNEL[S]
+ */
+ struct GNUNET_MessageHeader header;
+
+ /**
+ * Number of channels.
+ */
+ uint32_t channels GNUNET_PACKED;
+
+ /**
+ * ID of the destination of the tunnel (can be local peer).
+ */
+ struct GNUNET_PeerIdentity destination;
+
+ /**
+ * Number of connections.
+ */
+ uint32_t connections GNUNET_PACKED;
+
+ /**
+ * Encryption state.
+ */
+ uint16_t estate GNUNET_PACKED;
+
+ /**
+ * Connection state.
+ */
+ uint16_t cstate GNUNET_PACKED;
+
+ /* If TUNNEL (no 'S'): GNUNET_PeerIdentity connection_ids[connections] */
+ /* If TUNNEL (no 'S'): uint32_t channel_ids[channels] */
};
GNUNET_NETWORK_STRUCT_END
-/******************************************************************************/
-/************************ ENUMERATIONS ****************************/
-/******************************************************************************/
+
/**
- * All the states a peer participating in a tunnel can be in.
+ * @brief Translate a fwd variable into a string representation, for logging.
+ *
+ * @param fwd Is FWD? (#GNUNET_YES or #GNUNET_NO)
+ *
+ * @return String representing FWD or BCK.
*/
-enum MeshPeerState
-{
- /**
- * Uninitialized status, should never appear in operation.
- */
- MESH_PEER_INVALID,
+char *
+GM_f2s (int fwd);
- /**
- * Peer is the root and owner of the tree
- */
- MESH_PEER_ROOT,
- /**
- * Peer only retransmits traffic, is not a final destination
- */
- MESH_PEER_RELAY,
+/**
+ * Check if one pid is bigger than other, accounting for overflow.
+ *
+ * @param bigger Argument that should be bigger.
+ * @param smaller Argument that should be smaller.
+ *
+ * @return True if bigger (arg1) has a higher value than smaller (arg 2).
+ */
+int
+GM_is_pid_bigger (uint32_t bigger, uint32_t smaller);
- /**
- * Path to the peer not known yet
- */
- MESH_PEER_SEARCHING,
- /**
- * Request sent, not yet answered.
- */
- MESH_PEER_WAITING,
+/**
+ * Get the higher ACK value out of two values, taking in account overflow.
+ *
+ * @param a First ACK value.
+ * @param b Second ACK value.
+ *
+ * @return Highest ACK value from the two.
+ */
+uint32_t
+GM_max_pid (uint32_t a, uint32_t b);
- /**
- * Peer connected and ready to accept data
- */
- MESH_PEER_READY,
- /**
- * Peer connected previosly but not responding
- */
- MESH_PEER_RECONNECTING
-};
+/**
+ * Get the lower ACK value out of two values, taking in account overflow.
+ *
+ * @param a First ACK value.
+ * @param b Second ACK value.
+ *
+ * @return Lowest ACK value from the two.
+ */
+uint32_t
+GM_min_pid (uint32_t a, uint32_t b);
+
+
+/**
+ * Convert a 256 bit MeshHash into a 512 HashCode to use in GNUNET_h2s,
+ * multihashmap, and other HashCode-based functions.
+ *
+ * @param id A 256 bit hash to expand.
+ *
+ * @return A HashCode containing the original 256 bit hash right-padded with 0.
+ */
+const struct GNUNET_HashCode *
+GM_h2hc (const struct GNUNET_MeshHash *id);
+
+/**
+ * Get a string from a Mesh Hash (256 bits).
+ * WARNING: Not reentrant (based on GNUNET_h2s).
+ */
+const char *
+GM_h2s (const struct GNUNET_MeshHash *id);
+/**
+ * Convert a message type into a string to help debug
+ * Generated with:
+ * FIND: "#define ([^ ]+)[ ]*([0-9]+)"
+ * REPLACE: " case \2: return "\1"; break;"
+ *
+ * @param m Message type.
+ *
+ * @return Human readable string description.
+ */
+const char *
+GM_m2s (uint16_t m);
+#if 0 /* keep Emacsens' auto-indent happy */
+{
+#endif
+#ifdef __cplusplus
+}
+#endif
#endif