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ranap: receive/parse DirectTransfer

This commit is contained in:
Harald Welte 2015-09-11 20:10:17 +02:00
parent 80401adcb0
commit 1c2ada0e7f
1 changed files with 219 additions and 0 deletions
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219
src/hnbgw_ranap.c
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@ -302,6 +302,196 @@ int ranap_decode_initialue_messageies(
return decoded;
}
#include "ranap/RANAP_DirectTransfer.h"
#include "ranap/RANAP_SAPI.h"
#include "ranap/RANAP_RAC.h"
#define DIRECTTRANSFERIES_RANAP_LAI_PRESENT (1 << 0)
#define DIRECTTRANSFERIES_RANAP_RAC_PRESENT (1 << 1)
#define DIRECTTRANSFERIES_RANAP_SAI_PRESENT (1 << 2)
#define DIRECTTRANSFERIES_RANAP_SAPI_PRESENT (1 << 3)
typedef struct RANAP_DirectTransferIEs_s {
uint16_t presenceMask;
RANAP_NAS_PDU_t nas_pdu;
RANAP_LAI_t lai; ///< Optional field
RANAP_RAC_t rac; ///< Optional field
RANAP_SAI_t sai; ///< Optional field
RANAP_SAPI_t sapi; ///< Optional field
} RANAP_DirectTransferIEs_t;
int ranap_decode_directtransferies(
RANAP_DirectTransferIEs_t *directTransferIEs,
ANY_t *any_p) {
RANAP_DirectTransfer_t directTransfer;
RANAP_DirectTransfer_t *directTransfer_p = &directTransfer;
int i, decoded = 0;
int tempDecoded = 0;
assert(any_p != NULL);
assert(directTransferIEs != NULL);
RANAP_DEBUG("Decoding message RANAP_DirectTransferIEs (%s:%d)\n", __FILE__, __LINE__);
ANY_to_type_aper(any_p, &asn_DEF_RANAP_DirectTransfer, (void**)&directTransfer_p);
for (i = 0; i < directTransfer_p->directTransfer_ies.list.count; i++) {
RANAP_IE_t *ie_p;
ie_p = directTransfer_p->directTransfer_ies.list.array[i];
switch(ie_p->id) {
case RANAP_ProtocolIE_ID_id_NAS_PDU:
{
RANAP_NAS_PDU_t ranap_naspdu;
RANAP_NAS_PDU_t *ranap_naspdu_p = &ranap_naspdu;
tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_NAS_PDU, (void**)&ranap_naspdu_p);
if (tempDecoded < 0) {
RANAP_DEBUG("Decoding of IE nas_pdu failed\n");
return -1;
}
decoded += tempDecoded;
if (asn1_xer_print)
xer_fprint(stdout, &asn_DEF_RANAP_NAS_PDU, ranap_naspdu_p);
memcpy(&directTransferIEs->nas_pdu, ranap_naspdu_p, sizeof(RANAP_NAS_PDU_t));
} break;
/* Optional field */
case RANAP_ProtocolIE_ID_id_LAI:
{
RANAP_LAI_t ranap_lai;
RANAP_LAI_t *ranap_lai_p = &ranap_lai;
directTransferIEs->presenceMask |= DIRECTTRANSFERIES_RANAP_LAI_PRESENT;
tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_LAI, (void**)&ranap_lai_p);
if (tempDecoded < 0) {
RANAP_DEBUG("Decoding of IE lai failed\n");
return -1;
}
decoded += tempDecoded;
if (asn1_xer_print)
xer_fprint(stdout, &asn_DEF_RANAP_LAI, ranap_lai_p);
memcpy(&directTransferIEs->lai, ranap_lai_p, sizeof(RANAP_LAI_t));
} break;
/* Optional field */
case RANAP_ProtocolIE_ID_id_RAC:
{
RANAP_RAC_t ranap_rac;
RANAP_RAC_t *ranap_rac_p = &ranap_rac;
directTransferIEs->presenceMask |= DIRECTTRANSFERIES_RANAP_RAC_PRESENT;
tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_RAC, (void**)&ranap_rac_p);
if (tempDecoded < 0) {
RANAP_DEBUG("Decoding of IE rac failed\n");
return -1;
}
decoded += tempDecoded;
if (asn1_xer_print)
xer_fprint(stdout, &asn_DEF_RANAP_RAC, ranap_rac_p);
memcpy(&directTransferIEs->rac, ranap_rac_p, sizeof(RANAP_RAC_t));
} break;
/* Optional field */
case RANAP_ProtocolIE_ID_id_SAI:
{
RANAP_SAI_t ranap_sai;
RANAP_SAI_t *ranap_sai_p = &ranap_sai;
directTransferIEs->presenceMask |= DIRECTTRANSFERIES_RANAP_SAI_PRESENT;
tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_SAI, (void**)&ranap_sai_p);
if (tempDecoded < 0) {
RANAP_DEBUG("Decoding of IE sai failed\n");
return -1;
}
decoded += tempDecoded;
if (asn1_xer_print)
xer_fprint(stdout, &asn_DEF_RANAP_SAI, ranap_sai_p);
memcpy(&directTransferIEs->sai, ranap_sai_p, sizeof(RANAP_SAI_t));
} break;
/* Optional field */
case RANAP_ProtocolIE_ID_id_SAPI:
{
RANAP_SAPI_t ranap_sapi;
RANAP_SAPI_t *ranap_sapi_p = &ranap_sapi;
directTransferIEs->presenceMask |= DIRECTTRANSFERIES_RANAP_SAPI_PRESENT;
tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_SAPI, (void**)&ranap_sapi_p);
if (tempDecoded < 0) {
RANAP_DEBUG("Decoding of IE sapi failed\n");
return -1;
}
decoded += tempDecoded;
if (asn1_xer_print)
xer_fprint(stdout, &asn_DEF_RANAP_SAPI, ranap_sapi_p);
memcpy(&directTransferIEs->sapi, ranap_sapi_p, sizeof(RANAP_SAPI_t));
} break;
default:
RANAP_DEBUG("Unknown protocol IE id (%d) for message directtransferies\n", (int)ie_p->id);
return -1;
}
}
return decoded;
}
int ranap_encode_directtransferies(
RANAP_DirectTransfer_t *directTransfer,
RANAP_DirectTransferIEs_t *directTransferIEs) {
RANAP_IE_t *ie;
if ((ie = ranap_new_ie(RANAP_ProtocolIE_ID_id_NAS_PDU,
RANAP_Criticality_ignore,
&asn_DEF_RANAP_NAS_PDU,
&directTransferIEs->nas_pdu)) == NULL) {
return -1;
}
ASN_SEQUENCE_ADD(&directTransfer->directTransfer_ies.list, ie);
/* Optional field */
if ((directTransferIEs->presenceMask & DIRECTTRANSFERIES_RANAP_LAI_PRESENT)
== DIRECTTRANSFERIES_RANAP_LAI_PRESENT) {
if ((ie = ranap_new_ie(RANAP_ProtocolIE_ID_id_LAI,
RANAP_Criticality_ignore,
&asn_DEF_RANAP_LAI,
&directTransferIEs->lai)) == NULL) {
return -1;
}
ASN_SEQUENCE_ADD(&directTransfer->directTransfer_ies.list, ie);
}
/* Optional field */
if ((directTransferIEs->presenceMask & DIRECTTRANSFERIES_RANAP_RAC_PRESENT)
== DIRECTTRANSFERIES_RANAP_RAC_PRESENT) {
if ((ie = ranap_new_ie(RANAP_ProtocolIE_ID_id_RAC,
RANAP_Criticality_ignore,
&asn_DEF_RANAP_RAC,
&directTransferIEs->rac)) == NULL) {
return -1;
}
ASN_SEQUENCE_ADD(&directTransfer->directTransfer_ies.list, ie);
}
/* Optional field */
if ((directTransferIEs->presenceMask & DIRECTTRANSFERIES_RANAP_SAI_PRESENT)
== DIRECTTRANSFERIES_RANAP_SAI_PRESENT) {
if ((ie = ranap_new_ie(RANAP_ProtocolIE_ID_id_SAI,
RANAP_Criticality_ignore,
&asn_DEF_RANAP_SAI,
&directTransferIEs->sai)) == NULL) {
return -1;
}
ASN_SEQUENCE_ADD(&directTransfer->directTransfer_ies.list, ie);
}
/* Optional field */
if ((directTransferIEs->presenceMask & DIRECTTRANSFERIES_RANAP_SAPI_PRESENT)
== DIRECTTRANSFERIES_RANAP_SAPI_PRESENT) {
if ((ie = ranap_new_ie(RANAP_ProtocolIE_ID_id_SAPI,
RANAP_Criticality_ignore,
&asn_DEF_RANAP_SAPI,
&directTransferIEs->sapi)) == NULL) {
return -1;
}
ASN_SEQUENCE_ADD(&directTransfer->directTransfer_ies.list, ie);
}
return 0;
}
/***********************************************************************
* END auto-generated copy+pasted
@ -402,6 +592,32 @@ static int ranap_rx_init_ue_msg(struct hnb_context *hnb, ANY_t *in)
return 0;
}
static int ranap_rx_dt(struct hnb_context *hnb, ANY_t *in)
{
RANAP_DirectTransferIEs_t ies;
int sapi = 0;
int rc;
rc = ranap_decode_directtransferies(&ies, in);
if (rc < 0)
return rc;
if (ies.presenceMask & DIRECTTRANSFERIES_RANAP_SAPI_PRESENT)
sapi = ies.sapi;
if (ies.presenceMask & DIRECTTRANSFERIES_RANAP_LAI_PRESENT) {
/* FIXME: Update LAI associated with UE */
}
if (ies.presenceMask & DIRECTTRANSFERIES_RANAP_RAC_PRESENT) {
/* FIXME: Update RAC associated with UE */
}
DEBUGP(DMAIN, "DirectTransfer: %s\n",
osmo_hexdump(ies.nas_pdu.buf, ies.nas_pdu.size));
/* FIXME: hand NAS PDU into MSC */
}
static int ranap_rx_initiating_msg(struct hnb_context *hnb, RANAP_InitiatingMessage_t *imsg)
{
int rc;
@ -413,6 +629,9 @@ static int ranap_rx_initiating_msg(struct hnb_context *hnb, RANAP_InitiatingMess
case RANAP_ProcedureCode_id_InitialUE_Message:
rc = ranap_rx_init_ue_msg(hnb, &imsg->value);
break;
case RANAP_ProcedureCode_id_DirectTransfer:
rc = ranap_rx_dt(hnb, &imsg->value);
break;
}
}