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/*
* Copyright (c) 2017-2019 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 interfaces/hicn_light/hicn_light.c
* \brief hICN light interface
*/
#include <stdbool.h>
#include <stdlib.h> // arc4random [random, rand]
#include <stdio.h> // snprintf
#include <time.h> // time
#include <hicn/ctrl.h>
#include "../../facemgr.h"
#include "../../interface.h"
#include "../../util/ip_address.h"
#include "../../util/log.h"
#include "../../util/map.h"
#include "../../event.h"
#define DEFAULT_ROUTE_COST 0
typedef struct {
hc_sock_t * s;
bool busy;
} hl_data_t;
int hl_initialize(interface_t * interface, face_rules_t * rules, void ** pdata)
{
hl_data_t * data = malloc(sizeof(hl_data_t));
if (!data) {
ERROR("[hicn_light] Out of memory!");
goto ERR_MALLOC;
}
data->s = hc_sock_create();
if (data->s <= 0) {
ERROR("[hicn_light] Could not create control socket");
goto ERR_SOCK;
}
if (hc_sock_connect(data->s) < 0) {
ERROR("[hicn_light] Could not connect control socket");
goto ERR_CONNECT;
}
data->busy = false;
*pdata = data;
return FACEMGR_SUCCESS;
ERR_CONNECT:
hc_sock_free(data->s);
ERR_SOCK:
free(data);
ERR_MALLOC:
return FACEMGR_FAILURE;
}
int hl_finalize(interface_t * interface)
{
//hc_data_t * data = interface->data;
//hc_sock_close(data->s);
return FACEMGR_SUCCESS;
}
int hl_on_event(interface_t * interface, const event_t * event)
{
hc_face_t face;
hc_route_t route;
int rc;
hl_data_t * data = (hl_data_t *)interface->data;
/* XXX We need a queue or a socket pool to process concurrent events */
if (data->busy) {
ERROR("[hicn_light] Busy !");
return FACEMGR_FAILURE;
}
switch(event->type) {
case EVENT_TYPE_CREATE:
/* Create face */
face.face = *event->face;
rc = hc_face_create(data->s, &face);
if (rc < 0) {
ERROR("Failed to create face\n");
goto ERR;
}
DEBUG("Created face id=%d\n", face.id);
#if 0
/* Add default route v4 */
route = (hc_route_t) {
.face_id = face.id,
.family = AF_INET,
.remote_addr = IPV4_ANY,
.len = 0,
.cost = DEFAULT_ROUTE_COST,
};
if (hc_route_create(data->s, &route) < 0) {
ERROR("Failed to create default hICN/IPv4 route");
goto ERR;
}
INFO("Successfully created default hICN/IPv4 route.");
#endif
#if 0
route = (hc_route_t) {
.face_id = face.id,
.family = AF_INET6,
.remote_addr = IPV6_ANY,
.len = 0,
.cost = DEFAULT_ROUTE_COST,
};
if (hc_route_create(data->s, &route) < 0) {
ERROR("Failed to create default hICN/IPv6 route");
goto ERR;
}
#endif
#if 1
/* We add routes based on face tags */
if (policy_tags_has(event->face->tags, POLICY_TAG_TRUSTED)) {
route = (hc_route_t) {
.face_id = face.id,
.family = AF_INET6,
.len = 16,
.cost = DEFAULT_ROUTE_COST,
};
if (ip_address_pton("b001::", &route.remote_addr) < 0) {
ERROR("Failed to convert prefix");
goto ERR;
}
if (hc_route_create(data->s, &route) < 0) {
ERROR("Failed to create hICN/IPv6 route");
goto ERR;
}
route = (hc_route_t) {
.face_id = face.id,
.family = AF_INET6,
.len = 16,
.cost = DEFAULT_ROUTE_COST,
};
if (ip_address_pton("d001::", &route.remote_addr) < 0) {
ERROR("Failed to convert prefix");
goto ERR;
}
if (hc_route_create(data->s, &route) < 0) {
ERROR("Failed to create hICN/IPv6 route");
goto ERR;
}
} else {
route = (hc_route_t) {
.face_id = face.id,
.family = AF_INET6,
.len = 16,
.cost = DEFAULT_ROUTE_COST,
};
if (ip_address_pton("c001::", &route.remote_addr) < 0) {
ERROR("Failed to convert prefix");
goto ERR;
}
if (hc_route_create(data->s, &route) < 0) {
ERROR("Failed to create hICN/IPv6 route");
goto ERR;
}
}
#endif
break;
case EVENT_TYPE_DELETE:
/* Removing a face should also remove associated routes */
/* Create face */
face.face = *event->face;
rc = hc_face_delete(data->s, &face);
if (rc < 0) {
ERROR("Failed to delete face\n");
goto ERR;
}
INFO("Deleted face id=%d\n", face.id);
break;
default:
ERROR("Unknown event %s\n", event_type_str[event->type]);
/* Unsupported events */
goto ERR;
}
return FACEMGR_SUCCESS;
ERR:
return FACEMGR_FAILURE;
}
const interface_ops_t hicn_light_ops = {
.type = "hicn_light",
.is_singleton = false,
.initialize = hl_initialize,
.finalize = hl_finalize,
.on_event = hl_on_event,
};
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