ranap: receive/parse DirectTransfer
diff --git a/src/hnbgw_ranap.c b/src/hnbgw_ranap.c
index 2b099af..6dda81e 100644
--- a/src/hnbgw_ranap.c
+++ b/src/hnbgw_ranap.c
@@ -302,6 +302,196 @@
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 @@
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 @@
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;
}
}