diff options
Diffstat (limited to 'metis/ccnx/forwarder/metis/io/metis_UdpTunnel.c')
-rw-r--r-- | metis/ccnx/forwarder/metis/io/metis_UdpTunnel.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/metis/ccnx/forwarder/metis/io/metis_UdpTunnel.c b/metis/ccnx/forwarder/metis/io/metis_UdpTunnel.c new file mode 100644 index 00000000..77424dce --- /dev/null +++ b/metis/ccnx/forwarder/metis/io/metis_UdpTunnel.c @@ -0,0 +1,90 @@ +/* + * Copyright (c) 2017 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 <config.h> +#include <stdio.h> +#include <stdbool.h> +#include <string.h> +#include <errno.h> + +#include <ccnx/forwarder/metis/io/metis_UdpTunnel.h> +#include <ccnx/forwarder/metis/io/metis_UdpConnection.h> + +#include <LongBow/runtime.h> + +MetisIoOperations * +metisUdpTunnel_CreateOnListener(MetisForwarder *metis, MetisListenerOps *localListener, const CPIAddress *remoteAddress) +{ + assertNotNull(metis, "Parameter metis must be non-null"); + assertNotNull(localListener, "Parameter localListener must be non-null"); + assertNotNull(remoteAddress, "Parameter remoteAddress must be non-null"); + + MetisLogger *logger = metisForwarder_GetLogger(metis); + + MetisIoOperations *ops = NULL; + if (localListener->getEncapType(localListener) == METIS_ENCAP_UDP) { + const CPIAddress *localAddress = localListener->getListenAddress(localListener); + CPIAddressType localType = cpiAddress_GetType(localAddress); + CPIAddressType remoteType = cpiAddress_GetType(remoteAddress); + + if (localType == remoteType) { + MetisAddressPair *pair = metisAddressPair_Create(localAddress, remoteAddress); + bool isLocal = false; + int fd = localListener->getSocket(localListener); + ops = metisUdpConnection_Create(metis, fd, pair, isLocal); + + metisAddressPair_Release(&pair); + } else { + if (metisLogger_IsLoggable(logger, MetisLoggerFacility_IO, PARCLogLevel_Error)) { + metisLogger_Log(logger, MetisLoggerFacility_IO, PARCLogLevel_Error, __func__, + "Local listener of type %s and remote type %s, cannot establish tunnel", + cpiAddress_TypeToString(localType), + cpiAddress_TypeToString(remoteType)); + } + } + } else { + if (metisLogger_IsLoggable(logger, MetisLoggerFacility_IO, PARCLogLevel_Error)) { + metisLogger_Log(logger, MetisLoggerFacility_IO, PARCLogLevel_Error, __func__, + "Local listener %p is not type UDP, cannot establish tunnel", (void *) localListener); + } + } + + return ops; +} + +/* + * wrapper for metisUdpTunnel_CreateOnListener. Lookup to see if we have a listener on the local address. + * If so, call metisUdpTunnel_CreateOnListener, otherwise return NULL + */ +MetisIoOperations * +metisUdpTunnel_Create(MetisForwarder *metis, const CPIAddress *localAddress, const CPIAddress *remoteAddress) +{ + MetisListenerSet *set = metisForwarder_GetListenerSet(metis); + MetisListenerOps *listener = metisListenerSet_Find(set, METIS_ENCAP_UDP, localAddress); + MetisIoOperations *ops = NULL; + if (listener) { + ops = metisUdpTunnel_CreateOnListener(metis, listener, remoteAddress); + } else { + if (metisLogger_IsLoggable(metisForwarder_GetLogger(metis), MetisLoggerFacility_IO, PARCLogLevel_Error)) { + char *str = cpiAddress_ToString(localAddress); + metisLogger_Log(metisForwarder_GetLogger(metis), MetisLoggerFacility_IO, PARCLogLevel_Error, __func__, + "Could not find listener to match address %s", str); + parcMemory_Deallocate((void **) &str); + } + } + return ops; +} + |