X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=src%2FE2AP-c%2Fsubscription%2Fsubscription_request.cc;fp=src%2FE2AP-c%2Fsubscription%2Fsubscription_request.cc;h=dd583a132b457284721b8107ad63e09fe0bc7db9;hb=b9d7e9c232a4371ddfed51c58e5a57f87b057229;hp=0000000000000000000000000000000000000000;hpb=59f84608ec15c016958a6e0e0ddd813f376c0925;p=ric-app%2Fadmin.git diff --git a/src/E2AP-c/subscription/subscription_request.cc b/src/E2AP-c/subscription/subscription_request.cc new file mode 100644 index 0000000..dd583a1 --- /dev/null +++ b/src/E2AP-c/subscription/subscription_request.cc @@ -0,0 +1,278 @@ + + +/* +================================================================================== + Copyright (c) 2018-2019 AT&T Intellectual Property. + + 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 "subscription_request.hpp" + +subscription_request::subscription_request(void){ + + _name = "default"; + + e2ap_pdu_obj = 0; + e2ap_pdu_obj = (E2AP_PDU_t * )calloc(1, sizeof(E2AP_PDU_t)); + assert(e2ap_pdu_obj != 0); + + initMsg = 0; + initMsg = (InitiatingMessage_t * )calloc(1, sizeof(InitiatingMessage_t)); + assert(initMsg != 0); + + IE_array = 0; + IE_array = (RICsubscriptionRequest_IEs_t *)calloc(NUM_SUBSCRIPTION_REQUEST_IES, sizeof(RICsubscriptionRequest_IEs_t)); + assert(IE_array != 0); + + action_array = 0; + action_array = (RICaction_ToBeSetup_ItemIEs_t *)calloc(INITIAL_LIST_SIZE, sizeof(RICaction_ToBeSetup_ItemIEs_t)); + assert(action_array != 0); + action_array_size = INITIAL_LIST_SIZE; + +}; + + + +// Clear assigned protocolIE list from RIC indication IE container +subscription_request::~subscription_request(void){ + + mdclog_write(MDCLOG_INFO, "Freeing subscription request memory for");; + + // Sequence of actions to be admitted causes special heart-ache. Free ric subscription element manually and reset the ie pointer + RICsubscription_t * ricsubscription_ie = &(IE_array[2].value.choice.RICsubscription); + + for(int i = 0; i < ricsubscription_ie->ricAction_ToBeSetup_List.list.size; i++){ + ricsubscription_ie->ricAction_ToBeSetup_List.list.array[i] = 0; + } + + if (ricsubscription_ie->ricAction_ToBeSetup_List.list.size > 0){ + free(ricsubscription_ie->ricAction_ToBeSetup_List.list.array); + ricsubscription_ie->ricAction_ToBeSetup_List.list.size = 0; + ricsubscription_ie->ricAction_ToBeSetup_List.list.count = 0; + ricsubscription_ie->ricAction_ToBeSetup_List.list.array = 0; + } + + free(action_array); + RICsubscriptionRequest_t * subscription_request = &(initMsg->value.choice.RICsubscriptionRequest); + + for(int i = 0; i < subscription_request->protocolIEs.list.size; i++){ + subscription_request->protocolIEs.list.array[i] = 0; + } + + if( subscription_request->protocolIEs.list.size > 0){ + free( subscription_request->protocolIEs.list.array); + subscription_request->protocolIEs.list.array = 0; + subscription_request->protocolIEs.list.size = 0; + subscription_request->protocolIEs.list.count = 0; + } + + free(IE_array); + free(initMsg); + e2ap_pdu_obj->choice.initiatingMessage = 0; + + ASN_STRUCT_FREE(asn_DEF_E2AP_PDU, e2ap_pdu_obj); + mdclog_write(MDCLOG_INFO, "Freed subscription request memory "); +}; + + +bool subscription_request::encode_e2ap_subscription(unsigned char *buf, size_t *size, E2AP_PDU_t *e2ap_pdu, subscription_helper &dinput){ + + bool res; + + e2ap_pdu_obj->choice.initiatingMessage = initMsg; + e2ap_pdu_obj->present = E2AP_PDU_PR_initiatingMessage; + + res = set_fields(e2ap_pdu_obj->choice.initiatingMessage, dinput); + if (!res){ + return false; + } + + //xer_fprint(stdout, &asn_DEF_E2AP_PDU, e2ap_pdu_obj); + int ret_constr = asn_check_constraints(&asn_DEF_E2AP_PDU, (void *) e2ap_pdu_obj, errbuf, &errbuf_len); + if(ret_constr){ + error_string.assign(errbuf, errbuf_len); + error_string = "Constraints failed for encoding subscription request. Reason = " + error_string; + return false; + } + + asn_enc_rval_t retval = asn_encode_to_buffer(0, ATS_ALIGNED_BASIC_PER, &asn_DEF_E2AP_PDU, e2ap_pdu_obj, buf, *size); + + if(retval.encoded == -1){ + error_string.assign(strerror(errno)); + error_string = "Error encoding Subscription Delete Request. Reason = " + error_string; + return false; + } + else { + if(*size < retval.encoded){ + std::stringstream ss; + ss <<"Error encoding Subscription Delete Request . Reason = encoded pdu size " << retval.encoded << " exceeds buffer size " << *size << std::endl; + error_string = ss.str(); + retval.encoded = -1; + return false; + } + } + + *size = retval.encoded; + return true; + +} + + +bool subscription_request::set_fields(InitiatingMessage_t *ref_initMsg, subscription_helper &helper){ + + if (ref_initMsg == 0){ + error_string = "Error : Invalid reference when setting fields for subscription request"; + return false; + } + + int ie_index; + int result = 0; + + ref_initMsg->procedureCode = ProcedureCode_id_ricSubscription; + ref_initMsg->criticality = Criticality_reject; + ref_initMsg->value.present = InitiatingMessage__value_PR_RICsubscriptionRequest; + + RICsubscriptionRequest_t * subscription_request = &(ref_initMsg->value.choice.RICsubscriptionRequest); + + // Reset field count for protocolIEs + subscription_request->protocolIEs.list.count = 0; + + ie_index = 0; + RICsubscriptionRequest_IEs_t *ies_ricreq = &IE_array[ie_index]; + ies_ricreq->criticality = Criticality_reject; + ies_ricreq->id = ProtocolIE_ID_id_RICrequestID; + ies_ricreq->value.present = RICsubscriptionRequest_IEs__value_PR_RICrequestID; + RICrequestID_t *ricrequest_ie = &ies_ricreq->value.choice.RICrequestID; + ricrequest_ie->ricRequestorID = helper.get_request_id(); + ricrequest_ie->ricRequestSequenceNumber = helper.get_req_seq(); + result = ASN_SEQUENCE_ADD(&subscription_request->protocolIEs, ies_ricreq); + if (result == -1){ + error_string = "Erorr : Unable to assign memory to add RIC request id to subscription request"; + return false; + } + + ie_index = 1; + RICsubscriptionRequest_IEs_t *ies_ranfunc = &IE_array[ie_index]; + ies_ranfunc->criticality = Criticality_reject; + ies_ranfunc->id = ProtocolIE_ID_id_RANfunctionID; + ies_ranfunc->value.present = RICsubscriptionRequest_IEs__value_PR_RANfunctionID; + RANfunctionID_t *ranfunction_ie = &ies_ranfunc->value.choice.RANfunctionID; + *ranfunction_ie = helper.get_function_id(); + ASN_SEQUENCE_ADD(&subscription_request->protocolIEs, ies_ranfunc); + if (result == -1){ + error_string = "Erorr : Unable to assign memory to add RAN function id to subscription request"; + return false; + } + + + ie_index = 2; + RICsubscriptionRequest_IEs_t *ies_actid = &IE_array[ie_index]; + ies_actid->criticality = Criticality_reject; + ies_actid->id = ProtocolIE_ID_id_RICsubscription; + ies_actid->value.present = RICsubscriptionRequest_IEs__value_PR_RICsubscription; + RICsubscription_t *ricsubscription_ie = &ies_actid->value.choice.RICsubscription; + + ricsubscription_ie->ricEventTriggerDefinition.buf = (uint8_t *) helper.get_event_def(); + ricsubscription_ie->ricEventTriggerDefinition.size = helper.get_event_def_size(); + + std::vector * ref_action_array = helper.get_list(); + + // do we need to reallocate ? + if(action_array_size < ref_action_array->size()){ + action_array_size = 2 * ref_action_array->size(); + RICaction_ToBeSetup_ItemIEs_t * new_ref = 0; + new_ref = (RICaction_ToBeSetup_ItemIEs_t * )realloc(action_array, action_array_size); + assert(new_ref != 0); + action_array = new_ref; + } + + // reset the list count on ricAction_ToBeSetup_List; + ricsubscription_ie->ricAction_ToBeSetup_List.list.count = 0; + + for(int i = 0; i < ref_action_array->size(); i ++){ + action_array[i].criticality = Criticality_ignore; + action_array[i].id = ProtocolIE_ID_id_RICaction_ToBeSetup_Item ; + action_array[i].value.present = RICaction_ToBeSetup_ItemIEs__value_PR_RICaction_ToBeSetup_Item; + action_array[i].value.choice.RICaction_ToBeSetup_Item.ricActionID = (*ref_action_array)[i].get_id(); + action_array[i].value.choice.RICaction_ToBeSetup_Item.ricActionType = (*ref_action_array)[i].get_type(); + + result = ASN_SEQUENCE_ADD(&ricsubscription_ie->ricAction_ToBeSetup_List, &(action_array[i])); + if (result == -1){ + error_string = "Erorr : Unable to assign memory to add Action item to set up list"; + return false; + } + + + } + + result = ASN_SEQUENCE_ADD(&subscription_request->protocolIEs, ies_actid); + if (result == -1){ + error_string = "Erorr : Unable to assign memory to action item to be setup list subscription request"; + return false; + } + + return true; +}; + + + +bool subscription_request:: get_fields(InitiatingMessage_t * init_msg, subscription_helper & dout) +{ + + if (init_msg == 0){ + error_string = "Error. Invalid reference when getting fields from subscription request"; + return false; + } + + RICrequestID_t *requestid; + RANfunctionID_t * ranfunctionid; + RICsubscription_t * ricsubscription; + + for(int edx = 0; edx < init_msg->value.choice.RICsubscriptionRequest.protocolIEs.list.count; edx++) { + RICsubscriptionRequest_IEs_t *memb_ptr = init_msg->value.choice.RICsubscriptionRequest.protocolIEs.list.array[edx]; + + switch(memb_ptr->id) + { + case (ProtocolIE_ID_id_RICrequestID): + requestid = &memb_ptr->value.choice.RICrequestID; + dout.set_request(requestid->ricRequestorID, requestid->ricRequestSequenceNumber); + break; + + case (ProtocolIE_ID_id_RANfunctionID): + ranfunctionid = &memb_ptr->value.choice.RANfunctionID; + dout.set_function_id(*ranfunctionid); + break; + + case (ProtocolIE_ID_id_RICsubscription): + ricsubscription = &memb_ptr->value.choice.RICsubscription; + dout.set_event_def(ricsubscription->ricEventTriggerDefinition.buf, ricsubscription->ricEventTriggerDefinition.size); + + for(int index = 0; index < ricsubscription->ricAction_ToBeSetup_List.list.count; index ++){ + RICaction_ToBeSetup_ItemIEs_t * item = (RICaction_ToBeSetup_ItemIEs_t *)ricsubscription->ricAction_ToBeSetup_List.list.array[index]; + dout.add_action(item->value.choice.RICaction_ToBeSetup_Item.ricActionID, item->value.choice.RICaction_ToBeSetup_Item.ricActionType); + }; + + break; + } + + } + + //asn_fprint(stdout, &asn_DEF_E2AP_PDU, e2pdu); + return true; +}; + + +