216 lines
6.5 KiB
C
216 lines
6.5 KiB
C
/* common SABP code */
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/* (C) 2015 by Harald Welte <laforge@gnumonks.org>
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdint.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/sabp/sabp_common.h>
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#include <asn1c/asn1helpers.h>
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extern int asn1_xer_print;
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int _sabp_DSABP = 0;
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#define DSABP _sabp_DSABP
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const struct value_string sabp_presence_vals[] = {
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{ SABP_SABP_PDU_PR_initiatingMessage, "Initiating" },
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{ SABP_SABP_PDU_PR_successfulOutcome, "Successful Outcome" },
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{ SABP_SABP_PDU_PR_unsuccessfulOutcome, "Unsuccessful Outcome" },
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{ 0, NULL }
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};
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const struct value_string sabp_procedure_code_vals[] = {
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{ SABP_ProcedureCode_id_Write_Replace, "Write-Replace" },
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{ SABP_ProcedureCode_id_Kill, "Kill" },
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{ SABP_ProcedureCode_id_Load_Status_Enquiry, "Load-Status-Enquiry" },
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{ SABP_ProcedureCode_id_Message_Status_Query, "Message-Status-Query" },
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{ SABP_ProcedureCode_id_Restart_Indication, "Restart-Indication" },
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{ SABP_ProcedureCode_id_Reset, "Reset" },
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{ SABP_ProcedureCode_id_Failure_Indication, "Failure-Indication" },
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{ SABP_ProcedureCode_id_Error_Indication, "Error-Indication" },
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{ 0, NULL }
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};
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const struct value_string sabp_cause_vals[] = {
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{ SABP_Cause_parameter_not_recognised, "Parameter not recognized" },
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{ SABP_Cause_parameter_value_invalid, "Parameter value invalid" },
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{ SABP_Cause_valid_CN_message_not_identified, "Valid CN message not identified" },
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{ SABP_Cause_service_area_identity_not_valid, "Service Area Identity not valid" },
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{ SABP_Cause_unrecognised_message, "Unrecognised message" },
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{ SABP_Cause_missing_mandatory_element, "Missing mandatory element" },
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{ SABP_Cause_rNC_capacity_exceeded, "RNC capacity exceeded" },
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{ SABP_Cause_rNC_memory_exceeded, "RNC memory exceeded" },
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{ SABP_Cause_service_area_broadcast_not_supported, "Service Area Broadcast not supported" },
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{ SABP_Cause_service_area_broadcast_not_operational, "Service Area Broadcast not operational" },
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{ SABP_Cause_message_reference_already_used, "Message Reference already used" },
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{ SABP_Cause_unspecifed_error, "Unspecified Error" },
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{ SABP_Cause_transfer_syntax_error, "Transfer Syntax Error" },
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{ SABP_Cause_semantic_error, "Semantic Error" },
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{ SABP_Cause_message_not_compatible_with_receiver_state,
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"Message not compatible with receiver state" },
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{ SABP_Cause_abstract_syntax_error_reject, "Abstract Syntax Error - Reject" },
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{ SABP_Cause_abstract_syntax_error_ignore_and_notify,
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"Abstract Syntax Error - Ignore and Notify" },
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{ SABP_Cause_abstract_syntax_error_falsely_constructed_message,
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"Abstract Syntax Error - Falsely constructed message" },
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{ 0, NULL }
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};
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static struct msgb *sabp_msgb_alloc(void)
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{
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return msgb_alloc_headroom(1024+512, 512, "SABP Tx");
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}
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static struct msgb *_sabp_gen_msg(SABP_SABP_PDU_t *pdu)
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{
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struct msgb *msg = sabp_msgb_alloc();
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asn_enc_rval_t rval;
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if (!msg)
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return NULL;
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rval = aper_encode_to_buffer(&asn_DEF_SABP_SABP_PDU, pdu,
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msg->data, msgb_tailroom(msg));
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if (rval.encoded < 0) {
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LOGP(DSABP, LOGL_ERROR, "Error encoding type: %s\n",
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rval.failed_type->name);
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}
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msgb_put(msg, rval.encoded/8);
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return msg;
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}
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struct msgb *sabp_generate_initiating_message(e_SABP_ProcedureCode procedureCode,
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SABP_Criticality_t criticality,
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asn_TYPE_descriptor_t *td, void *sptr)
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{
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SABP_SABP_PDU_t pdu;
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struct msgb *msg;
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int rc;
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memset(&pdu, 0, sizeof(pdu));
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pdu.present = SABP_SABP_PDU_PR_initiatingMessage;
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pdu.choice.initiatingMessage.procedureCode = procedureCode;
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pdu.choice.initiatingMessage.criticality = criticality;
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rc = ANY_fromType_aper(&pdu.choice.initiatingMessage.value, td, sptr);
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if (rc < 0) {
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LOGP(DSABP, LOGL_ERROR, "Error in ANY_fromType_aper (%s)\n", td->name);
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return NULL;
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}
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msg = _sabp_gen_msg(&pdu);
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ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_SABP_SABP_PDU, &pdu);
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return msg;
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}
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struct msgb *sabp_generate_successful_outcome(
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e_SABP_ProcedureCode procedureCode,
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SABP_Criticality_t criticality,
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asn_TYPE_descriptor_t * td,
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void *sptr)
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{
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SABP_SABP_PDU_t pdu;
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struct msgb *msg;
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int rc;
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memset(&pdu, 0, sizeof(pdu));
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pdu.present = SABP_SABP_PDU_PR_successfulOutcome;
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pdu.choice.successfulOutcome.procedureCode = procedureCode;
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pdu.choice.successfulOutcome.criticality = criticality;
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rc = ANY_fromType_aper(&pdu.choice.successfulOutcome.value, td, sptr);
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if (rc < 0) {
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LOGP(DSABP, LOGL_ERROR, "Error in ANY_fromType_aper (%s)\n", td->name);
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return NULL;
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}
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msg = _sabp_gen_msg(&pdu);
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ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_SABP_SABP_PDU, &pdu);
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return msg;
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}
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struct msgb *sabp_generate_unsuccessful_outcome(
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e_SABP_ProcedureCode procedureCode,
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SABP_Criticality_t criticality,
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asn_TYPE_descriptor_t * td,
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void *sptr)
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{
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SABP_SABP_PDU_t pdu;
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struct msgb *msg;
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int rc;
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memset(&pdu, 0, sizeof(pdu));
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pdu.present = SABP_SABP_PDU_PR_unsuccessfulOutcome;
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pdu.choice.unsuccessfulOutcome.procedureCode = procedureCode;
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pdu.choice.unsuccessfulOutcome.criticality = criticality;
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rc = ANY_fromType_aper(&pdu.choice.unsuccessfulOutcome.value, td, sptr);
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if (rc < 0) {
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LOGP(DSABP, LOGL_ERROR, "Error in ANY_fromType_aper (%s)\n", td->name);
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return NULL;
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}
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msg = _sabp_gen_msg(&pdu);
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ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_SABP_SABP_PDU, &pdu);
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return msg;
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}
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SABP_IE_t *sabp_new_ie(SABP_ProtocolIE_ID_t id,
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SABP_Criticality_t criticality,
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asn_TYPE_descriptor_t * type, void *sptr)
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{
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SABP_IE_t *buff;
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int rc;
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if ((buff = CALLOC(1, sizeof(*buff))) == NULL) {
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// Possible error on malloc
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return NULL;
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}
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buff->id = id;
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buff->criticality = criticality;
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rc = ANY_fromType_aper(&buff->value, type, sptr);
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if (rc < 0) {
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LOGP(DSABP, LOGL_ERROR, "Error in ANY_fromType_aper (%s)\n", type->name);
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FREEMEM(buff);
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return NULL;
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}
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if (asn1_xer_print)
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if (xer_fprint(stdout, &asn_DEF_SABP_IE, buff) < 0) {
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FREEMEM(buff);
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return NULL;
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}
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return buff;
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}
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void sabp_set_log_area(int log_area)
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{
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_sabp_DSABP = log_area;
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}
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