e2ap.go

   1 /*
   2 ==================================================================================
   3   Copyright (c) 2019 AT&T Intellectual Property.
   4   Copyright (c) 2019 Nokia
   5
   6    Licensed under the Apache License, Version 2.0 (the "License");
   7    you may not use this file except in compliance with the License.
   8    You may obtain a copy of the License at
   9
  10        http://www.apache.org/licenses/LICENSE-2.0
  11
  12    Unless required by applicable law or agreed to in writing, software
  13    distributed under the License is distributed on an "AS IS" BASIS,
  14    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15    See the License for the specific language governing permissions and
  16    limitations under the License.
  17 ==================================================================================
  18 */
  19
  20 package control
  21
  22 /*
  23 #include <stdlib.h>
  24 #include <e2ap/wrapper.h>
  25 #cgo LDFLAGS: -le2apwrapper
  26 #cgo CFLAGS: -I/usr/local/include/e2ap
  27 */
  28 import "C"
  29
  30 import (
  31         "errors"
  32         "unsafe"
  33 )
  34
  35 type E2ap struct {
  36 }
  37
  38 /* RICsubscriptionRequest */
  39
  40 func (c *E2ap) GetSubscriptionRequestSequenceNumber(payload []byte) (subId uint16, err error) {
  41         cptr := unsafe.Pointer(&payload[0])
  42         cret := C.e2ap_get_ric_subscription_request_sequence_number(cptr, C.size_t(len(payload)))
  43         if cret < 0 {
  44                 return 0, errors.New("e2ap wrapper is unable to get Subscirption Request Sequence Number due to wrong or invalid payload")
  45         }
  46         subId = uint16(cret)
  47         return
  48 }
  49
  50 func (c *E2ap) SetSubscriptionRequestSequenceNumber(payload []byte, newSubscriptionid uint16) (newPayload []byte, err error) {
  51         cptr := unsafe.Pointer(&payload[0])
  52         size := C.e2ap_set_ric_subscription_request_sequence_number(cptr, C.size_t(len(payload)), C.long(newSubscriptionid))
  53         if size < 0 {
  54                 return make([]byte, 0), errors.New("e2ap wrapper is unable to set Subscription Request Sequence Number due to wrong or invalid payload")
  55         }
  56         newPayload = C.GoBytes(cptr, (C.int(size)+7)/8)
  57         return
  58 }
  59
  60 func (c *E2ap) SetSubscriptionRequestPayload(payload []byte, ricRequestorID uint16, ricRequestSequenceNumber uint16, ranFunctionID uint16, eventTriggerDefinition []byte, eventTriggerDefinitionSize int, actionCount int, actionIds []int64, actionTypes []int64, actionDefinitions []ActionDefinition, subsequentActions []SubsequentAction) (newPayload []byte, err error) {
  61         cptr := unsafe.Pointer(&payload[0])
  62         eventTrigger := unsafe.Pointer(&eventTriggerDefinition[0])
  63         actIds := unsafe.Pointer(&actionIds[0])
  64         actTypes := unsafe.Pointer(&actionTypes[0])
  65
  66         count := len(actionDefinitions)
  67         actDefs := (*C.RICactionDefinition)(C.calloc(C.size_t(len(actionDefinitions)), C.sizeof_RICactionDefinition))
  68         for index := 0; index < count; index++ {
  69                 ptr := *(*C.RICactionDefinition)(unsafe.Pointer((uintptr)(unsafe.Pointer(actDefs)) + (uintptr)(C.sizeof_RICactionDefinition*C.int(index))))
  70                 ptr.size = C.int(actionDefinitions[index].Size)
  71                 if ptr.size != 0 {
  72                         ptr.actionDefinition = (*C.uint8_t)(C.CBytes(actionDefinitions[index].Buf))
  73                 }
  74         }
  75         defer C.free(unsafe.Pointer(actDefs))
  76
  77         count = len(subsequentActions)
  78         subActs := (*C.RICSubsequentAction)(C.calloc(C.size_t(len(subsequentActions)), C.sizeof_RICSubsequentAction))
  79         for index := 0; index < count; index++ {
  80                 ptr := *(*C.RICSubsequentAction)(unsafe.Pointer((uintptr)(unsafe.Pointer(subActs)) + (uintptr)(C.sizeof_RICSubsequentAction*C.int(index))))
  81                 ptr.isValid = C.int(subsequentActions[index].IsValid)
  82                 ptr.subsequentActionType = C.long(subsequentActions[index].SubsequentActionType)
  83                 ptr.timeToWait = C.long(subsequentActions[index].TimeToWait)
  84         }
  85         defer C.free(unsafe.Pointer(subActs))
  86
  87         size := C.e2ap_encode_ric_subscription_request_message(cptr, C.size_t(len(payload)), C.long(ricRequestorID), C.long(ricRequestSequenceNumber), C.long(ranFunctionID), eventTrigger, C.size_t(eventTriggerDefinitionSize), C.int(actionCount), (*C.long)(actIds), (*C.long)(actTypes), actDefs, subActs)
  88         if size < 0 {
  89                 return make([]byte, 0), errors.New("e2ap wrapper is unable to set Subscription Request Payload due to wrong or invalid payload")
  90         }
  91         newPayload = C.GoBytes(cptr, (C.int(size)+7)/8)
  92         return
  93 }
  94
  95 /* RICsubscriptionResponse */
  96
  97 func (c *E2ap) GetSubscriptionResponseSequenceNumber(payload []byte) (subId uint16, err error) {
  98         cptr := unsafe.Pointer(&payload[0])
  99         cret := C.e2ap_get_ric_subscription_response_sequence_number(cptr, C.size_t(len(payload)))
 100         if cret < 0 {
 101                 return 0, errors.New("e2ap wrapper is unable to get Subscirption Response Sequence Number due to wrong or invalid payload")
 102         }
 103         subId = uint16(cret)
 104         return
 105 }
 106
 107 func (c *E2ap) SetSubscriptionResponseSequenceNumber(payload []byte, newSubscriptionid uint16) (newPayload []byte, err error) {
 108         cptr := unsafe.Pointer(&payload[0])
 109         size := C.e2ap_set_ric_subscription_response_sequence_number(cptr, C.size_t(len(payload)), C.long(newSubscriptionid))
 110         if size < 0 {
 111                 return make([]byte, 0), errors.New("e2ap wrapper is unable to set Subscription Response Sequence Number due to wrong or invalid payload")
 112         }
 113         newPayload = C.GoBytes(cptr, (C.int(size)+7)/8)
 114         return
 115 }
 116
 117 func (c *E2ap) GetSubscriptionResponseMessage(payload []byte) (decodedMsg *DecodedSubscriptionResponseMessage, err error) {
 118         cptr := unsafe.Pointer(&payload[0])
 119         decodedMsg = &DecodedSubscriptionResponseMessage{}
 120         decodedCMsg := C.e2ap_decode_ric_subscription_response_message(cptr, C.size_t(len(payload)))
 121         defer C.free(unsafe.Pointer(decodedCMsg))
 122
 123         if decodedCMsg == nil {
 124                 return decodedMsg, errors.New("e2ap wrapper is unable to decode subscription response message due to wrong or invalid payload")
 125         }
 126
 127         decodedMsg.RequestID = int32(decodedCMsg.requestorID)
 128         decodedMsg.RequestSequenceNumber = int32(decodedCMsg.requestSequenceNumber)
 129         decodedMsg.FuncID = int32(decodedCMsg.ranfunctionID)
 130
 131         admittedCount := int(decodedCMsg.ricActionAdmittedList.count)
 132         for index := 0; index < admittedCount; index++ {
 133                 decodedMsg.ActionAdmittedList.ActionID[index] = int32(decodedCMsg.ricActionAdmittedList.ricActionID[index])
 134         }
 135         decodedMsg.ActionAdmittedList.Count = admittedCount
 136
 137         notAdmittedCount := int(decodedCMsg.ricActionNotAdmittedList.count)
 138         for index := 0; index < notAdmittedCount; index++ {
 139                 decodedMsg.ActionNotAdmittedList.ActionID[index] = int32(decodedCMsg.ricActionNotAdmittedList.ricActionID[index])
 140                 decodedMsg.ActionNotAdmittedList.Cause[index].CauseType = int32(decodedCMsg.ricActionNotAdmittedList.ricCause[index].ricCauseType)
 141                 decodedMsg.ActionNotAdmittedList.Cause[index].CauseID = int32(decodedCMsg.ricActionNotAdmittedList.ricCause[index].ricCauseID)
 142         }
 143         decodedMsg.ActionNotAdmittedList.Count = notAdmittedCount
 144
 145         return
 146 }
 147
 148 /* RICsubscriptionFailure */
 149
 150 func (c *E2ap) GetSubscriptionFailureSequenceNumber(payload []byte) (subId uint16, err error) {
 151         cptr := unsafe.Pointer(&payload[0])
 152         cret := C.e2ap_get_ric_subscription_failure_sequence_number(cptr, C.size_t(len(payload)))
 153         if cret < 0 {
 154                 return 0, errors.New("e2ap wrapper is unable to get Subscirption Failure Sequence Number due to wrong or invalid payload")
 155         }
 156         subId = uint16(cret)
 157         return
 158 }
 159
 160 /* RICsubscriptionDeleteRequest */
 161
 162 func (c *E2ap) GetSubscriptionDeleteRequestSequenceNumber(payload []byte) (subId uint16, err error) {
 163         cptr := unsafe.Pointer(&payload[0])
 164         cret := C.e2ap_get_ric_subscription_delete_request_sequence_number(cptr, C.size_t(len(payload)))
 165         if cret < 0 {
 166                 return 0, errors.New("e2ap wrapper is unable to get Subscirption Delete Request Sequence Number due to wrong or invalid payload")
 167         }
 168         subId = uint16(cret)
 169         return
 170 }
 171
 172 func (c *E2ap) SetSubscriptionDeleteRequestSequenceNumber(payload []byte, newSubscriptionid uint16) (newPayload []byte, err error) {
 173         cptr := unsafe.Pointer(&payload[0])
 174         size := C.e2ap_set_ric_subscription_delete_request_sequence_number(cptr, C.size_t(len(payload)), C.long(newSubscriptionid))
 175         if size < 0 {
 176                 return make([]byte, 0), errors.New("e2ap wrapper is unable to set Subscription Delete Request Sequence Number due to wrong or invalid payload")
 177         }
 178         newPayload = C.GoBytes(cptr, (C.int(size)+7)/8)
 179         return
 180 }
 181
 182 func (c *E2ap) SetSubscriptionDeleteRequestPayload(payload []byte, ricRequestorID uint16, ricRequestSequenceNumber uint16, ranFunctionID uint16) (newPayload []byte, err error) {
 183         cptr := unsafe.Pointer(&payload[0])
 184         size := C.e2ap_encode_ric_subscription_delete_request_message(cptr, C.size_t(len(payload)), C.long(ricRequestorID), C.long(ricRequestSequenceNumber), C.long(ranFunctionID))
 185         if size < 0 {
 186                 return make([]byte, 0), errors.New("e2ap wrapper is unable to set Subscription Delete Request Payload due to wrong or invalid payload")
 187         }
 188         newPayload = C.GoBytes(cptr, (C.int(size)+7)/8)
 189         return
 190 }
 191
 192 /* RICsubscriptionDeleteResponse */
 193
 194 func (c *E2ap) GetSubscriptionDeleteResponseSequenceNumber(payload []byte) (subId uint16, err error) {
 195         cptr := unsafe.Pointer(&payload[0])
 196         cret := C.e2ap_get_ric_subscription_delete_response_sequence_number(cptr, C.size_t(len(payload)))
 197         if cret < 0 {
 198                 return 0, errors.New("e2ap wrapper is unable to get Subscirption Delete Response Sequence Number due to wrong or invalid payload")
 199         }
 200         subId = uint16(cret)
 201         return
 202 }
 203
 204 func (c *E2ap) SetSubscriptionDeleteResponseSequenceNumber(payload []byte, newSubscriptionid uint16) (newPayload []byte, err error) {
 205         cptr := unsafe.Pointer(&payload[0])
 206         size := C.e2ap_set_ric_subscription_delete_response_sequence_number(cptr, C.size_t(len(payload)), C.long(newSubscriptionid))
 207         if size < 0 {
 208                 return make([]byte, 0), errors.New("e2ap wrapper is unable to set Subscription Delete Response Sequence Number due to wrong or invalid payload")
 209         }
 210         newPayload = C.GoBytes(cptr, (C.int(size)+7)/8)
 211         return
 212 }
 213
 214 /* RICsubscriptionDeleteFailure */
 215
 216 func (c *E2ap) GetSubscriptionDeleteFailureSequenceNumber(payload []byte) (subId uint16, err error) {
 217         cptr := unsafe.Pointer(&payload[0])
 218         cret := C.e2ap_get_ric_subscription_delete_failure_sequence_number(cptr, C.size_t(len(payload)))
 219         if cret < 0 {
 220                 return 0, errors.New("e2ap wrapper is unable to get Subscirption Failure Sequence Number due to wrong or invalid payload")
 221         }
 222         subId = uint16(cret)
 223         return
 224 }
 225
 226 /* RICindication */
 227
 228 func (c *E2ap) GetIndicationMessage(payload []byte) (decodedMsg *DecodedIndicationMessage, err error) {
 229         cptr := unsafe.Pointer(&payload[0])
 230         decodedMsg = &DecodedIndicationMessage{}
 231         decodedCMsg := C.e2ap_decode_ric_indication_message(cptr, C.size_t(len(payload)))
 232         if decodedCMsg == nil {
 233                 return decodedMsg, errors.New("e2ap wrapper is unable to decode indication message due to wrong or invalid payload")
 234         }
 235         defer C.e2ap_free_decoded_ric_indication_message(decodedCMsg)
 236
 237         decodedMsg.RequestID = int32(decodedCMsg.requestorID)
 238         decodedMsg.RequestSequenceNumber = int32(decodedCMsg.requestSequenceNumber)
 239         decodedMsg.FuncID = int32(decodedCMsg.ranfunctionID)
 240         decodedMsg.ActionID = int32(decodedCMsg.actionID)
 241         decodedMsg.IndSN = int32(decodedCMsg.indicationSN)
 242         decodedMsg.IndType = int32(decodedCMsg.indicationType)
 243         indhdr := unsafe.Pointer(decodedCMsg.indicationHeader)
 244         decodedMsg.IndHeader = C.GoBytes(indhdr, C.int(decodedCMsg.indicationHeaderSize))
 245         decodedMsg.IndHeaderLength = int32(decodedCMsg.indicationHeaderSize)
 246         indmsg := unsafe.Pointer(decodedCMsg.indicationMessage)
 247         decodedMsg.IndMessage = C.GoBytes(indmsg, C.int(decodedCMsg.indicationMessageSize))
 248         decodedMsg.IndMessageLength = int32(decodedCMsg.indicationMessageSize)
 249         callproc := unsafe.Pointer(decodedCMsg.callProcessID)
 250         decodedMsg.CallProcessID = C.GoBytes(callproc, C.int(decodedCMsg.callProcessIDSize))
 251         decodedMsg.CallProcessIDLength = int32(decodedCMsg.callProcessIDSize)
 252         return
 253 }