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/*
* Copyright (c) 2017-2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file connection.h
* @brief hICN connections
*/
#ifndef HICNLIGHT_CONNECTION_H
#define HICNLIGHT_CONNECTION_H
#include <hicn/core/address_pair.h>
#include <hicn/core/listener.h>
#include <hicn/core/msgbuf.h>
#include <hicn/face.h>
#ifdef WITH_POLICY
#include <hicn/policy.h>
#endif /* WITH_POLICY */
#define CONNECTION_ID_UNDEFINED ~0
#ifdef WITH_MAPME
typedef enum {
CONNECTION_EVENT_CREATE,
CONNECTION_EVENT_DELETE,
CONNECTION_EVENT_UPDATE,
CONNECTION_EVENT_SET_UP,
CONNECTION_EVENT_SET_DOWN,
CONNECTION_EVENT_PRIORITY_CHANGED,
CONNECTION_EVENT_TAGS_CHANGED,
} connection_event_t;
#endif /* WITH_MAPME */
struct forwarder_s;
struct wldr_s;
typedef struct {
unsigned id;
char * name;
char * interface_name;
face_type_t type;
address_pair_t pair;
int fd;
// bool up;
bool local;
face_state_t state;
face_state_t admin_state;
#ifdef WITH_POLICY
policy_tags_t tags;
uint32_t priority;
#endif /* WITH_POLICY */
void * data;
struct forwarder_s * forwarder; // recv only
bool closed;
/* WLDR */
bool wldr_autostart;
/*
* if true, wldr can be set automatically by default this value is set to
* true. if wldr is activated using a command (config file/hicnLightControl)
* this value is set to false so that a base station can not disable wldr at
* the client.
*/
struct wldr_s * wldr;
} connection_t;
#if 1
#define connection_get_id(C) ((C)->id)
#define connection_id_is_valid(ID) (ID != CONNECTION_ID_UNDEFINED)
#define connection_get_name(C) ((C)->name)
#define connection_get_type(C) ((C)->type)
#define connection_has_valid_id(C) (connection_id_is_valid(connection_get_id(C))
#define connection_get_pair(C) (&(C)->pair)
#define connection_get_local(C) (address_pair_local(connection_get_pair(C)))
#define connection_get_remote(C) (address_pair_remote(connection_get_pair(C)))
#define connection_get_local(C) (address_pair_local(connection_get_pair(C)))
#define connection_get_remote(C) (address_pair_remote(connection_get_pair(C)))
#define connection_is_up(C) ((C)->state == FACE_STATE_UP)
#define connection_is_closed(C) ((C)->closed == true)
#define connection_is_local(C) ((C)->local)
#define connection_get_state(C) ((C)->state)
#define connection_set_state(C, STATE) (C)->state = STATE
#define connection_get_admin_state(C) ((C)->admin_state)
#define connection_set_admin_state(C, STATE) (C)->admin_state = STATE
#define connection_get_interface_name(C) ((C)->interface_name)
#ifdef WITH_POLICY
#define connection_get_priority(C) ((C)->priority)
#define connection_set_priority(C, PRIORITY) (C)->priority = PRIORITY
#define connection_get_tags(C) ((C)->tags)
#define connection_set_tags(C, TAGS) (C)->tags = TAGS
#define connection_has_tag(C, TAG) policy_tags_has(connection_get_tags(C), TAG)
#define connection_add_tag(C, TAG) policy_tags_add(connection_get_tags(X), TAG)
#define connection_remove_tag(C, TAG) \
do { \
policy_tags_t _conn_var(tags); \
_conn_var(tags) = connection_get_tags(C); \
policy_tags_remove(_conn_var(tags), (TAG)); \
connection_set_tags((C), _conn_var(tags)); \
} while(0)
#define connection_clear_tags(C) connection_set_tags(C, POLICY_TAGS_EMPTY)
#endif /* WITH_POLICY */
#else
/* Accessors */
static inline unsigned connection_get_id(const connection_t * connection);
#define connection_id_is_valid(id) (id != CONNECTION_ID_UNDEFINED)
#define connection_has_valid_id(C) (connection_id_is_valid(connection_get_id(C))
static inline char * connection_get_name(const connection_t * connection);
static inline face_type_t connection_get_type(const connection_t * connection);
static inline address_pair_t * connection_get_pair(const connection_t * connection);
#define connection_get_local(C) (address_pair_local(connection_get_pair(C)))
#define connection_get_remote(C) (address_pair_remote(connection_get_pair(C)))
static inline bool connection_is_up(const connection_t * connection);
static inline bool connection_is_local(const connection_t * connection);
static inline face_state_t connection_get_state(const connection_t * connection);
static inline void connection_set_state(connection_t * connection, face_state_t state);
static inline face_state_t connection_get_admin_state(const connection_t * connection);
static inline void connection_set_admin_state(connection_t * connection, face_state_t state);
static inline const char * connection_get_interface_name(const connection_t * connection);
#ifdef WITH_POLICY
static inline uint32_t connection_get_priority(const connection_t * connection);
static inline void connection_set_priority(connection_t * connection, uint32_t priority);
static inline policy_tags_t connection_get_tags(const connection_t * connection);
static inline void connection_set_tags(connection_t * connection, policy_tags_t tags);
#define connection_has_tag(C, TAG) policy_tags_has(connection_get_tags(C), TAG)
#define connection_add_tag(C, TAG) policy_tags_add(connection_get_tags(X), TAG)
#define connection_remove_tag(C, TAG) \
do { \
policy_tags_t _conn_var(tags); \
_conn_var(tags) = connection_get_tags(C); \
policy_tags_remove(_conn_var(tags), (TAG)); \
connection_set_tags((C), _conn_var(tags)); \
} while(0)
#define connection_clear_tags(C) connection_set_tags(C, POLICY_TAGS_EMPTY)
#endif /* WITH_POLICY */
#endif
connection_t * connection_create(face_type_t type, const char * name,
const address_pair_t * pair, struct forwarder_s * forwarder);
int connection_initialize(connection_t * connection, face_type_t type, const char * name,
const char * interface_name, int fd, const address_pair_t * pair,
bool local, unsigned connection_id, struct forwarder_s * forwarder);
int connection_finalize(connection_t * connection);
int connection_send_packet(const connection_t * connection,
const uint8_t * packet, size_t size);
bool connection_send(const connection_t * connection, msgbuf_t * msgbuf,
bool queue);
size_t connection_process_buffer(connection_t * connection, const uint8_t * buffer, size_t size);
/* WLDR */
void connection_wldr_allow_autostart(connection_t * connection, bool value);
bool connection_wldr_autostart_is_allowed(connection_t * connection);
void connection_wldr_enable(connection_t * connection, bool value);
bool connection_has_wldr(const connection_t * connection);
void connection_wldr_detect_losses(const connection_t * connection, msgbuf_t * msgbuf);
void connection_wldr_handle_notification(const connection_t * connection, msgbuf_t * msgbuf);
#endif /* HICNLIGHT_CONNECTION_H */
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