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/*
* Author: Steven Barth <steven at midlink.org>
*
* Copyright 2015 Deutsche Telekom AG
*
* 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.
*
*/
#pragma once
#include <libubox/list.h>
#include <libubox/avl.h>
#include <libubox/uloop.h>
#include <arpa/inet.h>
#include "omcproxy.h"
struct group {
struct avl_node node;
struct in6_addr addr;
struct list_head sources;
size_t source_count;
omgp_time_t exclude_until;
omgp_time_t compat_v2_until;
omgp_time_t compat_v1_until;
omgp_time_t next_generic_transmit;
omgp_time_t next_source_transmit;
int retransmit;
};
struct group_source {
struct list_head head;
struct in6_addr addr;
omgp_time_t include_until;
int retransmit;
};
struct groups_config {
omgp_time_t query_response_interval;
omgp_time_t query_interval;
omgp_time_t last_listener_query_interval;
int robustness;
int last_listener_query_count;
};
struct groups {
struct groups_config cfg_v4;
struct groups_config cfg_v6;
struct avl_tree groups;
struct uloop_timeout timer;
size_t source_limit;
size_t group_limit;
void (*cb_query)(struct groups *g, const struct in6_addr *addr,
const struct list_head *sources, bool suppress);
void (*cb_update)(struct groups *g, struct group *group, omgp_time_t now);
};
void groups_init(struct groups *groups);
void groups_deinit(struct groups *groups);
enum groups_update {
UPDATE_UNSPEC,
UPDATE_IS_INCLUDE = 1,
UPDATE_IS_EXCLUDE = 2,
UPDATE_TO_IN = 3,
UPDATE_TO_EX = 4,
UPDATE_ALLOW = 5,
UPDATE_BLOCK = 6,
UPDATE_REPORT = 7,
UPDATE_REPORT_V1 = 8,
UPDATE_DONE = 9,
UPDATE_SET_IN = 0x11,
UPDATE_SET_EX = 0x12,
};
void groups_update_config(struct groups *groups, bool v6,
omgp_time_t query_response_interval, omgp_time_t query_interval, int robustness);
void groups_update_timers(struct groups *groups,
const struct in6_addr *groupaddr,
const struct in6_addr *addrs, size_t len);
void groups_update_state(struct groups *groups,
const struct in6_addr *groupaddr,
const struct in6_addr *addrs, size_t len,
enum groups_update update);
void groups_synthesize_events(struct groups *groups);
// Groups user query API
static inline bool group_is_included(const struct group *group, omgp_time_t time)
{
return group->exclude_until <= time;
}
static inline bool source_is_included(const struct group_source *source, omgp_time_t time)
{
return source->include_until > time;
}
#define groups_for_each_group(group, groupsp) \
avl_for_each_element(&(groupsp)->groups, group, node)
#define group_for_each_source(source, group) \
list_for_each_entry(source, &(group)->sources, head)
#define group_for_each_active_source(source, group, time) \
list_for_each_entry(source, &group->sources, head) \
if (source_is_included(source, time) == group_is_included(group, time))
const struct group* groups_get(struct groups *groups, const struct in6_addr *addr);
bool groups_includes_group(struct groups *groups, const struct in6_addr *addr,
const struct in6_addr *src, omgp_time_t time);
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