E2Manager/e2pdus/x2_setup_requests.go

   1 /*******************************************************************************
   2  *
   3  *   Copyright (c) 2019 AT&T Intellectual Property.
   4  *
   5  *   Licensed under the Apache License, Version 2.0 (the "License");
   6  *   you may not use this file except in compliance with the License.
   7  *   You may obtain a copy of the License at
   8  *
   9  *       http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  *   Unless required by applicable law or agreed to in writing, software
  12  *   distributed under the License is distributed on an "AS IS" BASIS,
  13  *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  *   See the License for the specific language governing permissions and
  15  *   limitations under the License.
  16  *
  17  *******************************************************************************/
  18 package e2pdus
  19
  20 // #cgo CFLAGS: -I../asn1codec/inc/ -I../asn1codec/e2ap_engine/
  21 // #cgo LDFLAGS: -L ../asn1codec/lib/ -L../asn1codec/e2ap_engine/ -le2ap_codec -lasncodec
  22 // #include <asn1codec_utils.h>
  23 // #include <x2setup_request_wrapper.h>
  24 import "C"
  25 import (
  26         "fmt"
  27         "github.com/pkg/errors"
  28         "unsafe"
  29 )
  30
  31 const (
  32         ShortMacro_eNB_ID = 18
  33         Macro_eNB_ID      = 20
  34         LongMacro_eNB_ID  = 21
  35         Home_eNB_ID       = 28
  36 )
  37
  38 var PackedEndcX2setupRequest []byte
  39 var PackedX2setupRequest []byte
  40 var PackedEndcX2setupRequestAsString string
  41 var PackedX2setupRequestAsString string
  42
  43 func PreparePackedEndcX2SetupRequest(maxAsn1PackedBufferSize int, maxAsn1CodecMessageBufferSize int, pLMNId []byte, eNB_Id []byte /*18, 20, 21, 28 bits length*/, bitqty uint, ricFlag []byte) ([]byte, string, error) {
  44         packedBuf := make([]byte, maxAsn1PackedBufferSize)
  45         errBuf := make([]C.char, maxAsn1CodecMessageBufferSize)
  46         packedBufSize := C.ulong(len(packedBuf))
  47         pduAsString := ""
  48
  49         if !C.build_pack_endc_x2setup_request(
  50                 (*C.uchar)(unsafe.Pointer(&pLMNId[0])) /*pLMN_Identity*/,
  51                 (*C.uchar)(unsafe.Pointer(&eNB_Id[0])),
  52                 C.uint(bitqty),
  53                 (*C.uchar)(unsafe.Pointer(&ricFlag[0])) /*pLMN_Identity*/,
  54                 &packedBufSize,
  55                 (*C.uchar)(unsafe.Pointer(&packedBuf[0])),
  56                 C.ulong(len(errBuf)),
  57                 &errBuf[0]) {
  58                 return nil, "", errors.New(fmt.Sprintf("packing error: %s", C.GoString(&errBuf[0])))
  59         }
  60
  61         pdu := C.new_pdu(C.size_t(1)) //TODO: change signature
  62         defer C.delete_pdu(pdu)
  63         if C.per_unpack_pdu(pdu, packedBufSize, (*C.uchar)(unsafe.Pointer(&packedBuf[0])), C.size_t(len(errBuf)), &errBuf[0]) {
  64                 C.asn1_pdu_printer(pdu, C.size_t(len(errBuf)), &errBuf[0])
  65                 pduAsString = C.GoString(&errBuf[0])
  66         }
  67
  68         return packedBuf[:packedBufSize], pduAsString, nil
  69 }
  70
  71 func PreparePackedX2SetupRequest(maxAsn1PackedBufferSize int, maxAsn1CodecMessageBufferSize int, pLMNId []byte, eNB_Id []byte /*18, 20, 21, 28 bits length*/, bitqty uint, ricFlag []byte) ([]byte, string, error) {
  72         packedBuf := make([]byte, maxAsn1PackedBufferSize)
  73         errBuf := make([]C.char, maxAsn1CodecMessageBufferSize)
  74         packedBufSize := C.ulong(len(packedBuf))
  75         pduAsString := ""
  76
  77         if !C.build_pack_x2setup_request(
  78                 (*C.uchar)(unsafe.Pointer(&pLMNId[0])) /*pLMN_Identity*/,
  79                 (*C.uchar)(unsafe.Pointer(&eNB_Id[0])),
  80                 C.uint(bitqty),
  81                 (*C.uchar)(unsafe.Pointer(&ricFlag[0])) /*pLMN_Identity*/,
  82                 &packedBufSize,
  83                 (*C.uchar)(unsafe.Pointer(&packedBuf[0])),
  84                 C.ulong(len(errBuf)),
  85                 &errBuf[0]) {
  86                 return nil, "", errors.New(fmt.Sprintf("packing error: %s", C.GoString(&errBuf[0])))
  87         }
  88
  89         pdu := C.new_pdu(C.size_t(1)) //TODO: change signature
  90         defer C.delete_pdu(pdu)
  91         if C.per_unpack_pdu(pdu, packedBufSize, (*C.uchar)(unsafe.Pointer(&packedBuf[0])), C.size_t(len(errBuf)), &errBuf[0]) {
  92                 C.asn1_pdu_printer(pdu, C.size_t(len(errBuf)), &errBuf[0])
  93                 pduAsString = C.GoString(&errBuf[0])
  94         }
  95         return packedBuf[:packedBufSize], pduAsString, nil
  96 }