103 lines
3.6 KiB
Go
103 lines
3.6 KiB
Go
//
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// Copyright 2019 AT&T Intellectual Property
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// Copyright 2019 Nokia
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// This source code is part of the near-RT RIC (RAN Intelligent Controller)
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// platform project (RICP).
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package converters
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// #cgo CFLAGS: -I../3rdparty/asn1codec/inc/ -I../3rdparty/asn1codec/e2ap_engine/
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// #cgo LDFLAGS: -L ../3rdparty/asn1codec/lib/ -L../3rdparty/asn1codec/e2ap_engine/ -le2ap_codec -lasncodec
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// #include <asn1codec_utils.h>
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// #include <x2setup_request_wrapper.h>
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import "C"
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import (
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"e2mgr/logger"
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"fmt"
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"github.com/pkg/errors"
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"unsafe"
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)
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type X2PduRefinedResponse struct {
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PduPrint string
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}
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//func unpackX2apPduUPer(logger *logger.Logger, allocationBufferSize int, packedBufferSize int, packedBuf []byte, maxMessageBufferSize int) (*C.E2AP_PDU_t, error) {
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// pdu := C.new_pdu(C.ulong(allocationBufferSize))
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//
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// if pdu == nil {
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// return nil, errors.New("allocation failure (pdu)")
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// }
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//
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// logger.Debugf("#x2apPdu_asn1_unpacker.unpackX2apPduUPer - Packed pdu(%d):%x", packedBufferSize, packedBuf)
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//
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// errBuf := make([]C.char, maxMessageBufferSize)
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// if !C.unpack_pdu_aux(pdu, C.ulong(packedBufferSize), (*C.uchar)(unsafe.Pointer(&packedBuf[0])), C.ulong(len(errBuf)), &errBuf[0], C.ATS_UNALIGNED_BASIC_PER) {
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// return nil, errors.New(fmt.Sprintf("unpacking error: %s", C.GoString(&errBuf[0])))
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// }
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//
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// if logger.DebugEnabled() {
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// C.asn1_pdu_printer(pdu, C.size_t(len(errBuf)), &errBuf[0])
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// logger.Debugf("#x2apPdu_asn1_unpacker.unpackX2apPduUPer - PDU: %v packed size:%d", C.GoString(&errBuf[0]), packedBufferSize)
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// }
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//
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// return pdu, nil
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//}
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func UnpackX2apPdu(logger *logger.Logger, allocationBufferSize int, packedBufferSize int, packedBuf []byte, maxMessageBufferSize int) (*C.E2AP_PDU_t, error) {
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pdu := C.new_pdu(C.ulong(allocationBufferSize))
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if pdu == nil {
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return nil, errors.New("allocation failure (pdu)")
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}
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logger.Infof("#x2apPdu_asn1_unpacker.UnpackX2apPdu - Packed pdu(%d):%x", packedBufferSize, packedBuf)
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errBuf := make([]C.char, maxMessageBufferSize)
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if !C.per_unpack_pdu(pdu, C.ulong(packedBufferSize), (*C.uchar)(unsafe.Pointer(&packedBuf[0])), C.ulong(len(errBuf)), &errBuf[0]) {
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return nil, errors.New(fmt.Sprintf("unpacking error: %s", C.GoString(&errBuf[0])))
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}
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if logger.DebugEnabled() {
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C.asn1_pdu_printer(pdu, C.size_t(len(errBuf)), &errBuf[0])
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logger.Debugf("#x2apPdu_asn1_unpacker.UnpackX2apPdu - PDU: %v packed size:%d", C.GoString(&errBuf[0]), packedBufferSize)
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}
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return pdu, nil
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}
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func UnpackX2apPduAndRefine(logger *logger.Logger, allocationBufferSize int, packedBufferSize int, packedBuf []byte, maxMessageBufferSize int) (*X2PduRefinedResponse, error) {
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pdu, err := UnpackX2apPdu(logger, allocationBufferSize, packedBufferSize, packedBuf, maxMessageBufferSize)
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if err != nil {
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return nil, err
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}
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defer C.delete_pdu(pdu)
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var refinedResponse = ""
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if logger.DebugEnabled() {
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buf := make([]C.char, 16*maxMessageBufferSize)
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C.asn1_pdu_printer(pdu, C.size_t(len(buf)), &buf[0])
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refinedResponse = C.GoString(&buf[0])
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}
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return &X2PduRefinedResponse{PduPrint: refinedResponse}, nil
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}
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