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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.
*/
#include <errno.h>
#include <src/config.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <parc/assert/parc_Assert.h>
#include <src/io/udpConnection.h>
#include <src/io/udpListener.h>
#include <src/io/udpTunnel.h>
IoOperations *udpTunnel_CreateOnListener(Forwarder *forwarder,
ListenerOps *localListener,
const Address *remoteAddress) {
parcAssertNotNull(forwarder, "Parameter metis must be non-null");
parcAssertNotNull(localListener, "Parameter localListener must be non-null");
parcAssertNotNull(remoteAddress, "Parameter remoteAddress must be non-null");
Logger *logger = forwarder_GetLogger(forwarder);
IoOperations *ops = NULL;
if (localListener->getEncapType(localListener) == ENCAP_UDP) {
const Address *localAddress =
localListener->getListenAddress(localListener);
address_type localType = addressGetType(localAddress);
address_type remoteType = addressGetType(remoteAddress);
if (localType == remoteType) {
AddressPair *pair = addressPair_Create(localAddress, remoteAddress);
bool isLocal = false;
int fd = localListener->getSocket(localListener);
// udpListener_SetPacketType(localListener,
// MessagePacketType_ContentObject);
ops = udpConnection_Create(forwarder, fd, pair, isLocal);
addressPair_Release(&pair);
} else {
if (logger_IsLoggable(logger, LoggerFacility_IO, PARCLogLevel_Error)) {
logger_Log(logger, LoggerFacility_IO, PARCLogLevel_Error, __func__,
"Local listener of type %s and remote type %s, cannot "
"establish tunnel",
addressTypeToString(localType),
addressTypeToString(remoteType));
}
}
} else {
if (logger_IsLoggable(logger, LoggerFacility_IO, PARCLogLevel_Error)) {
logger_Log(logger, LoggerFacility_IO, PARCLogLevel_Error, __func__,
"Local listener %p is not type UDP, cannot establish tunnel",
(void *)localListener);
}
}
return ops;
}
IoOperations *udpTunnel_Create(Forwarder *forwarder,
const Address *localAddress,
const Address *remoteAddress) {
ListenerSet *set = forwarder_GetListenerSet(forwarder);
ListenerOps *listener = listenerSet_Find(set, ENCAP_UDP, localAddress);
IoOperations *ops = NULL;
if (listener) {
ops = udpTunnel_CreateOnListener(forwarder, listener, remoteAddress);
} else {
if (logger_IsLoggable(forwarder_GetLogger(forwarder), LoggerFacility_IO,
PARCLogLevel_Error)) {
char *str = addressToString(localAddress);
logger_Log(forwarder_GetLogger(forwarder), LoggerFacility_IO,
PARCLogLevel_Error, __func__,
"Could not find listener to match address %s", str);
parcMemory_Deallocate((void **)&str);
}
}
return ops;
}
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