X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=Bouncer%2Fsrc%2Fxapp-asn%2Fe2ap%2Fe2ap_control.cc;fp=Bouncer%2Fsrc%2Fxapp-asn%2Fe2ap%2Fe2ap_control.cc;h=638b61805c4cabbca77686fae68ced43408b4ba8;hb=ff20129c8f517cca6e0b4de6544ff64aebe7c171;hp=0000000000000000000000000000000000000000;hpb=35882dccfbc1b35af0e5704e14e0ecb9eba0f52a;p=ric-app%2Fbouncer.git diff --git a/Bouncer/src/xapp-asn/e2ap/e2ap_control.cc b/Bouncer/src/xapp-asn/e2ap/e2ap_control.cc new file mode 100644 index 0000000..638b618 --- /dev/null +++ b/Bouncer/src/xapp-asn/e2ap/e2ap_control.cc @@ -0,0 +1,266 @@ +/* +================================================================================== + + Copyright (c) 2019-2020 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. +================================================================================== +*/ +/* + * ric_control_request.c + * + * Created on: Jul 11, 2019 + * Author: sjana, Ashwin Sridharan + */ + +#include "e2ap_control.hpp" + +// Set up memory allocations for each IE for encoding +// We are responsible for memory management for each IE for encoding +// Hence destructor should clear out memory +// When decoding, we rely on asn1c macro (ASN_STRUCT_FREE to be called +// for releasing memory by external calling function) +ric_control_request::ric_control_request(void){ + + 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 = (RICcontrolRequest_IEs_t *)calloc(NUM_CONTROL_REQUEST_IES, sizeof(RICcontrolRequest_IEs_t)); + assert(IE_array != 0); + + e2ap_pdu_obj->present = E2AP_PDU_PR_initiatingMessage; + e2ap_pdu_obj->choice.initiatingMessage = initMsg; + + +}; + + +// Clear assigned protocolIE list from RIC control_request IE container +ric_control_request::~ric_control_request(void){ + + mdclog_write(MDCLOG_DEBUG, "Freeing E2AP Control Request object memory"); + + RICcontrolRequest_t *ricControl_Request = &(initMsg->value.choice.RICcontrolRequest); + for(int i = 0; i < ricControl_Request->protocolIEs.list.size; i++){ + ricControl_Request->protocolIEs.list.array[i] = 0; + } + + if (ricControl_Request->protocolIEs.list.size > 0){ + free(ricControl_Request->protocolIEs.list.array); + ricControl_Request->protocolIEs.list.size = 0; + ricControl_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_DEBUG, "Freed E2AP Control Request object mempory"); + +} + + +bool ric_control_request::encode_e2ap_control_request(unsigned char *buf, size_t *size, ric_control_helper & dinput){ + + initMsg->procedureCode = ProcedureCode_id_RICcontrol; + initMsg->criticality = Criticality_ignore; + initMsg->value.present = InitiatingMessage__value_PR_RICcontrolRequest; + + bool res; + + res = set_fields(initMsg, dinput); + if (!res){ + return false; + } + + 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 control . Reason = " + error_string; + return false; + } + + //xer_fprint(stdout, &asn_DEF_E2AP_PDU, e2ap_pdu_obj); + + 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)); + return false; + } + else { + if(*size < retval.encoded){ + std::stringstream ss; + ss <<"Error encoding event trigger definition. Reason = encoded pdu size " << retval.encoded << " exceeds buffer size " << *size << std::endl; + error_string = ss.str(); + return false; + } + } + + *size = retval.encoded; + return true; + +} + +bool ric_control_request::set_fields(InitiatingMessage_t *initMsg, ric_control_helper &dinput){ + unsigned int ie_index; + + if (initMsg == 0){ + error_string = "Invalid reference for E2AP Control_Request message in set_fields"; + return false; + } + + RICcontrolRequest_t * ric_control_request = &(initMsg->value.choice.RICcontrolRequest); + ric_control_request->protocolIEs.list.count = 0; // reset + + // for(i = 0; i < NUM_CONTROL_REQUEST_IES;i++){ + // memset(&(IE_array[i]), 0, sizeof(RICcontrolRequest_IEs_t)); + // } + + // Mandatory IE + ie_index = 0; + RICcontrolRequest_IEs_t *ies_ricreq = &IE_array[ie_index]; + ies_ricreq->criticality = Criticality_reject; + ies_ricreq->id = ProtocolIE_ID_id_RICrequestID; + ies_ricreq->value.present = RICcontrolRequest_IEs__value_PR_RICrequestID; + RICrequestID_t *ricrequest_ie = &ies_ricreq->value.choice.RICrequestID; + ricrequest_ie->ricRequestorID = dinput.req_id; + //ricrequest_ie->ricRequestSequenceNumber = dinput.req_seq_no; + ASN_SEQUENCE_ADD(&(ric_control_request->protocolIEs), &(IE_array[ie_index])); + + // Mandatory IE + ie_index = 1; + RICcontrolRequest_IEs_t *ies_ranfunc = &IE_array[ie_index]; + ies_ranfunc->criticality = Criticality_reject; + ies_ranfunc->id = ProtocolIE_ID_id_RANfunctionID; + ies_ranfunc->value.present = RICcontrolRequest_IEs__value_PR_RANfunctionID; + RANfunctionID_t *ranfunction_ie = &ies_ranfunc->value.choice.RANfunctionID; + *ranfunction_ie = dinput.func_id; + ASN_SEQUENCE_ADD(&(ric_control_request->protocolIEs), &(IE_array[ie_index])); + + + // Mandatory IE + ie_index = 2; + RICcontrolRequest_IEs_t *ies_richead = &IE_array[ie_index]; + ies_richead->criticality = Criticality_reject; + ies_richead->id = ProtocolIE_ID_id_RICcontrolHeader; + ies_richead->value.present = RICcontrolRequest_IEs__value_PR_RICcontrolHeader; + RICcontrolHeader_t *richeader_ie = &ies_richead->value.choice.RICcontrolHeader; + richeader_ie->buf = dinput.control_header; + richeader_ie->size = dinput.control_header_size; + ASN_SEQUENCE_ADD(&(ric_control_request->protocolIEs), &(IE_array[ie_index])); + + // Mandatory IE + ie_index = 3; + RICcontrolRequest_IEs_t *ies_indmsg = &IE_array[ie_index]; + ies_indmsg->criticality = Criticality_reject; + ies_indmsg->id = ProtocolIE_ID_id_RICcontrolMessage; + ies_indmsg->value.present = RICcontrolRequest_IEs__value_PR_RICcontrolMessage; + RICcontrolMessage_t *ricmsg_ie = &ies_indmsg->value.choice.RICcontrolMessage; + ricmsg_ie->buf = dinput.control_msg; + ricmsg_ie->size = dinput.control_msg_size; + ASN_SEQUENCE_ADD(&(ric_control_request->protocolIEs), &(IE_array[ie_index])); + + // Optional IE + ie_index = 4; + if (dinput.control_ack >= 0){ + RICcontrolRequest_IEs_t *ies_indtyp = &IE_array[ie_index]; + ies_indtyp->criticality = Criticality_reject; + ies_indtyp->id = ProtocolIE_ID_id_RICcontrolAckRequest; + ies_indtyp->value.present = RICcontrolRequest_IEs__value_PR_RICcontrolAckRequest; + RICcontrolAckRequest_t *ricackreq_ie = &ies_indtyp->value.choice.RICcontrolAckRequest; + *ricackreq_ie = dinput.control_ack; + ASN_SEQUENCE_ADD(&(ric_control_request->protocolIEs), &(IE_array[ie_index])); + } + + // Optional IE + ie_index = 5; + if(dinput.call_process_id_size > 0){ + RICcontrolRequest_IEs_t *ies_callprocid = &IE_array[ie_index]; + ies_callprocid->criticality = Criticality_reject; + ies_callprocid->id = ProtocolIE_ID_id_RICcallProcessID; + ies_callprocid->value.present = RICcontrolRequest_IEs__value_PR_RICcallProcessID; + RICcallProcessID_t *riccallprocessid_ie = &ies_callprocid->value.choice.RICcallProcessID; + riccallprocessid_ie->buf = dinput.call_process_id; + riccallprocessid_ie->size = dinput.call_process_id_size; + ASN_SEQUENCE_ADD(&(ric_control_request->protocolIEs), &(IE_array[ie_index])); + + } + return true; + +}; + + + + +bool ric_control_request:: get_fields(InitiatingMessage_t * init_msg, ric_control_helper &dout) +{ + if (init_msg == 0){ + error_string = "Invalid reference for E2AP Control_Request message in get_fields"; + return false; + } + + + for(int edx = 0; edx < init_msg->value.choice.RICcontrolRequest.protocolIEs.list.count; edx++) { + RICcontrolRequest_IEs_t *memb_ptr = init_msg->value.choice.RICcontrolRequest.protocolIEs.list.array[edx]; + + switch(memb_ptr->id) + { + case (ProtocolIE_ID_id_RICcontrolHeader): + dout.control_header = memb_ptr->value.choice.RICcontrolHeader.buf; + dout.control_header_size = memb_ptr->value.choice.RICcontrolHeader.size; + break; + + case (ProtocolIE_ID_id_RICcontrolMessage): + dout.control_msg = memb_ptr->value.choice.RICcontrolMessage.buf; + dout.control_msg_size = memb_ptr->value.choice.RICcontrolMessage.size; + break; + + case (ProtocolIE_ID_id_RICcallProcessID): + dout.call_process_id = memb_ptr->value.choice.RICcallProcessID.buf; + dout.call_process_id_size = memb_ptr->value.choice.RICcallProcessID.size; + break; + + case (ProtocolIE_ID_id_RICrequestID): + dout.req_id = memb_ptr->value.choice.RICrequestID.ricRequestorID; + //dout.req_seq_no = memb_ptr->value.choice.RICrequestID.ricRequestSequenceNumber; + break; + + case (ProtocolIE_ID_id_RANfunctionID): + dout.func_id = memb_ptr->value.choice.RANfunctionID; + break; + + case (ProtocolIE_ID_id_RICcontrolAckRequest): + dout.control_ack = memb_ptr->value.choice.RICcontrolAckRequest; + break; + + default: + break; + } + + } + + return true; + +} + +InitiatingMessage_t * ric_control_request::get_message(void) { + return initMsg; +}