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c3bc4f6359eaf53e8eed029331da00a339e292af
openairinterface5g/openair-cn/S1AP/s1ap_mme_decoder.c
T
Lionel Gauthier 26495e6a0a GPLv3 
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5552 818b1a75-f10b-46b9-bf7c-635c3b92a50f
2014-07-17 13:40:57 +00:00

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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
/*! \file s1ap_mme_decoder.c
* \brief s1ap decode procedures for MME
* \author Sebastien ROUX <sebastien.roux@eurecom.fr>
* \date 2012
* \version 0.1
*/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include "assertions.h"
#include "s1ap_common.h"
#include "s1ap_ies_defs.h"
#include "s1ap_mme_decoder.h"
#include "s1ap_mme_handlers.h"
#if !defined(MME_CLIENT_TEST)
# include "intertask_interface.h"
#endif
#include "assertions.h"
static int s1ap_mme_decode_initiating(
s1ap_message *message, S1ap_InitiatingMessage_t *initiating_p)
{
int ret = -1;
MessageDef *message_p;
char *message_string = NULL;
size_t message_string_size;
MessagesIds message_id;
DevAssert(initiating_p != NULL);
message_string = calloc(10000, sizeof(char));
s1ap_string_total_size = 0;
message->procedureCode = initiating_p->procedureCode;
message->criticality = initiating_p->criticality;
switch(initiating_p->procedureCode) {
case S1ap_ProcedureCode_id_uplinkNASTransport: {
ret = s1ap_decode_s1ap_uplinknastransporties(
&message->msg.s1ap_UplinkNASTransportIEs, &initiating_p->value);
s1ap_xer_print_s1ap_uplinknastransport(s1ap_xer__print2sp, message_string,
message);
message_id = S1AP_UPLINK_NAS_LOG;
}
break;
case S1ap_ProcedureCode_id_S1Setup: {
ret = s1ap_decode_s1ap_s1setuprequesties(&message->msg.s1ap_S1SetupRequestIEs,
&initiating_p->value);
s1ap_xer_print_s1ap_s1setuprequest(s1ap_xer__print2sp, message_string, message);
message_id = S1AP_S1_SETUP_LOG;
}
break;
case S1ap_ProcedureCode_id_initialUEMessage: {
ret = s1ap_decode_s1ap_initialuemessageies(
&message->msg.s1ap_InitialUEMessageIEs,
&initiating_p->value);
s1ap_xer_print_s1ap_initialuemessage(s1ap_xer__print2sp, message_string,
message);
message_id = S1AP_INITIAL_UE_MESSAGE_LOG;
}
break;
case S1ap_ProcedureCode_id_UEContextReleaseRequest: {
ret = s1ap_decode_s1ap_uecontextreleaserequesties(
&message->msg.s1ap_UEContextReleaseRequestIEs, &initiating_p->value);
s1ap_xer_print_s1ap_uecontextreleaserequest(s1ap_xer__print2sp, message_string,
message);
message_id = S1AP_UE_CONTEXT_RELEASE_REQ_LOG;
}
break;
case S1ap_ProcedureCode_id_UECapabilityInfoIndication: {
ret = s1ap_decode_s1ap_uecapabilityinfoindicationies(
&message->msg.s1ap_UECapabilityInfoIndicationIEs, &initiating_p->value);
s1ap_xer_print_s1ap_uecapabilityinfoindication(s1ap_xer__print2sp,
message_string, message);
message_id = S1AP_UE_CAPABILITY_IND_LOG;
}
break;
default: {
S1AP_ERROR("Unknown procedure ID (%d) for initiating message\n",
(int)initiating_p->procedureCode);
AssertFatal(0, "Unknown procedure ID (%d) for initiating message\n",
(int)initiating_p->procedureCode);
}
break;
}
message_string_size = strlen(message_string);
message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id, message_string_size + sizeof (IttiMsgText));
message_p->ittiMsg.s1ap_uplink_nas_log.size = message_string_size;
memcpy(&message_p->ittiMsg.s1ap_uplink_nas_log.text, message_string, message_string_size);
itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
free(message_string);
return ret;
}
static int s1ap_mme_decode_successfull_outcome(
s1ap_message *message, S1ap_SuccessfulOutcome_t *successfullOutcome_p)
{
int ret = -1;
MessageDef *message_p = NULL;
char *message_string = NULL;
size_t message_string_size = 0;
MessagesIds message_id = MESSAGES_ID_MAX;
DevAssert(successfullOutcome_p != NULL);
message_string = calloc(10000, sizeof(char));
s1ap_string_total_size = 0;
message->procedureCode = successfullOutcome_p->procedureCode;
message->criticality = successfullOutcome_p->criticality;
switch(successfullOutcome_p->procedureCode) {
case S1ap_ProcedureCode_id_InitialContextSetup: {
ret = s1ap_decode_s1ap_initialcontextsetupresponseies(
&message->msg.s1ap_InitialContextSetupResponseIEs,
&successfullOutcome_p->value);
s1ap_xer_print_s1ap_initialcontextsetupresponse(s1ap_xer__print2sp,
message_string, message);
message_id = S1AP_INITIAL_CONTEXT_SETUP_LOG;
}
break;
case S1ap_ProcedureCode_id_UEContextRelease: {
ret = s1ap_decode_s1ap_uecontextreleasecompleteies(
&message->msg.s1ap_UEContextReleaseCompleteIEs, &successfullOutcome_p->value);
s1ap_xer_print_s1ap_uecontextreleasecomplete(s1ap_xer__print2sp,
message_string, message);
message_id = S1AP_UE_CONTEXT_RELEASE_LOG;
}
break;
default: {
S1AP_ERROR("Unknown procedure ID (%ld) for successfull outcome message\n",
successfullOutcome_p->procedureCode);
}
break;
}
message_string_size = strlen(message_string);
message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id, message_string_size + sizeof (IttiMsgText));
message_p->ittiMsg.s1ap_initial_context_setup_log.size = message_string_size;
memcpy(&message_p->ittiMsg.s1ap_initial_context_setup_log.text, message_string, message_string_size);
itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
free(message_string);
return ret;
}
static int s1ap_mme_decode_unsuccessfull_outcome(
s1ap_message *message, S1ap_UnsuccessfulOutcome_t *unSuccessfulOutcome_p)
{
int ret = -1;
MessageDef *message_p;
char *message_string = NULL;
size_t message_string_size;
MessagesIds message_id;
DevAssert(unSuccessfulOutcome_p != NULL);
message_string = calloc(10000, sizeof(char));
s1ap_string_total_size = 0;
message->procedureCode = unSuccessfulOutcome_p->procedureCode;
message->criticality = unSuccessfulOutcome_p->criticality;
switch(unSuccessfulOutcome_p->procedureCode) {
case S1ap_ProcedureCode_id_InitialContextSetup: {
ret = s1ap_decode_s1ap_initialcontextsetupfailureies(
&message->msg.s1ap_InitialContextSetupFailureIEs, &unSuccessfulOutcome_p->value);
s1ap_xer_print_s1ap_initialcontextsetupfailure(s1ap_xer__print2sp,
message_string, message);
message_id = S1AP_INITIAL_CONTEXT_SETUP_LOG;
}
break;
default: {
S1AP_ERROR("Unknown procedure ID (%d) for unsuccessfull outcome message\n",
(int)unSuccessfulOutcome_p->procedureCode);
}
break;
}
message_string_size = strlen(message_string);
message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id, message_string_size + sizeof (IttiMsgText));
message_p->ittiMsg.s1ap_initial_context_setup_log.size = message_string_size;
memcpy(&message_p->ittiMsg.s1ap_initial_context_setup_log.text, message_string, message_string_size);
itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
free(message_string);
return ret;
}
int s1ap_mme_decode_pdu(s1ap_message *message, uint8_t *buffer, uint32_t len)
{
S1AP_PDU_t pdu;
S1AP_PDU_t *pdu_p = &pdu;
asn_dec_rval_t dec_ret;
DevAssert(buffer != NULL);
memset((void *)pdu_p, 0, sizeof(S1AP_PDU_t));
dec_ret = aper_decode(NULL,
&asn_DEF_S1AP_PDU,
(void **)&pdu_p,
buffer,
len,
0,
0);
if (dec_ret.code != RC_OK) {
S1AP_ERROR("Failed to decode PDU\n");
return -1;
}
message->direction = pdu_p->present;
switch(pdu_p->present) {
case S1AP_PDU_PR_initiatingMessage:
return s1ap_mme_decode_initiating(message, &pdu_p->choice.initiatingMessage);
case S1AP_PDU_PR_successfulOutcome:
return s1ap_mme_decode_successfull_outcome(message,
&pdu_p->choice.successfulOutcome);
case S1AP_PDU_PR_unsuccessfulOutcome:
return s1ap_mme_decode_unsuccessfull_outcome(message,
&pdu_p->choice.unsuccessfulOutcome);
default:
S1AP_ERROR("Unknown message outcome (%d) or not implemented",
(int)pdu_p->present);
break;
}
return -1;
}
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