127 lines
5.1 KiB
C
127 lines
5.1 KiB
C
/*******************************************************************************
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OpenAirInterface
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Copyright(c) 1999 - 2014 Eurecom
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OpenAirInterface is free software: you can redistribute it and/or modify
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it under the terms of the GNU 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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OpenAirInterface 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenAirInterface.The full GNU General Public License is
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included in this distribution in the file called "COPYING". If not,
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see <http://www.gnu.org/licenses/>.
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Contact Information
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OpenAirInterface Admin: openair_admin@eurecom.fr
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OpenAirInterface Tech : openair_tech@eurecom.fr
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OpenAirInterface Dev : openair4g-devel@eurecom.fr
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Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
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*******************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include "TLVEncoder.h"
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#include "TLVDecoder.h"
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#include "TrackingAreaIdentityList.h"
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int decode_tracking_area_identity_list(TrackingAreaIdentityList *trackingareaidentitylist, uint8_t iei, uint8_t *buffer, uint32_t len)
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{
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int decoded = 0;
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uint8_t ielen = 0;
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if (iei > 0) {
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CHECK_IEI_DECODER(iei, *buffer);
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decoded++;
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}
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ielen = *(buffer + decoded);
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decoded++;
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CHECK_LENGTH_DECODER(len - decoded, ielen);
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trackingareaidentitylist->typeoflist = (*(buffer + decoded) >> 5) & 0x3;
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trackingareaidentitylist->numberofelements = *(buffer + decoded) & 0x1f;
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decoded++;
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trackingareaidentitylist->mccdigit2 = (*(buffer + decoded) >> 4) & 0xf;
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trackingareaidentitylist->mccdigit1 = *(buffer + decoded) & 0xf;
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decoded++;
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trackingareaidentitylist->mncdigit3 = (*(buffer + decoded) >> 4) & 0xf;
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trackingareaidentitylist->mccdigit3 = *(buffer + decoded) & 0xf;
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decoded++;
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trackingareaidentitylist->mncdigit2 = (*(buffer + decoded) >> 4) & 0xf;
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trackingareaidentitylist->mncdigit1 = *(buffer + decoded) & 0xf;
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decoded++;
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//IES_DECODE_U16(trackingareaidentitylist->tac, *(buffer + decoded));
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IES_DECODE_U16(buffer, decoded, trackingareaidentitylist->tac);
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#if defined (NAS_DEBUG)
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dump_tracking_area_identity_list_xml(trackingareaidentitylist, iei);
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#endif
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return decoded;
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}
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int encode_tracking_area_identity_list(TrackingAreaIdentityList *trackingareaidentitylist, uint8_t iei, uint8_t *buffer, uint32_t len)
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{
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uint8_t *lenPtr;
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uint32_t encoded = 0;
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/* Checking IEI and pointer */
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CHECK_PDU_POINTER_AND_LENGTH_ENCODER(buffer, TRACKING_AREA_IDENTITY_LIST_MINIMUM_LENGTH, len);
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#if defined (NAS_DEBUG)
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dump_tracking_area_identity_list_xml(trackingareaidentitylist, iei);
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#endif
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if (iei > 0) {
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*buffer = iei;
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encoded++;
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}
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lenPtr = (buffer + encoded);
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encoded ++;
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*(buffer + encoded) = 0x00 |
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((trackingareaidentitylist->typeoflist & 0x3) << 5) |
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(trackingareaidentitylist->numberofelements & 0x1f);
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encoded++;
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*(buffer + encoded) = 0x00 | ((trackingareaidentitylist->mccdigit2 & 0xf) << 4) |
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(trackingareaidentitylist->mccdigit1 & 0xf);
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encoded++;
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*(buffer + encoded) = 0x00 | ((trackingareaidentitylist->mncdigit3 & 0xf) << 4) |
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(trackingareaidentitylist->mccdigit3 & 0xf);
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encoded++;
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*(buffer + encoded) = 0x00 | ((trackingareaidentitylist->mncdigit2 & 0xf) << 4) |
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(trackingareaidentitylist->mncdigit1 & 0xf);
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encoded++;
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IES_ENCODE_U16(buffer, encoded, trackingareaidentitylist->tac);
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*lenPtr = encoded - 1 - ((iei > 0) ? 1 : 0);
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return encoded;
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}
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void dump_tracking_area_identity_list_xml(TrackingAreaIdentityList *trackingareaidentitylist, uint8_t iei)
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{
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printf("<Tracking Area Identity List>\n");
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if (iei > 0)
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/* Don't display IEI if = 0 */
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printf(" <IEI>0x%X</IEI>\n", iei);
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printf(" <Type of list>%u</Type of list>\n", trackingareaidentitylist->typeoflist);
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/* LW: number of elements is coded as N-1 (0 -> 1 element, 1 -> 2 elements...),
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* see 3GPP TS 24.301, section 9.9.3.33.1 */
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printf(" <Number of elements>%u</Number of elements>\n", trackingareaidentitylist->numberofelements + 1);
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printf(" <MCC digit 2>%u</MCC digit 2>\n", trackingareaidentitylist->mccdigit2);
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printf(" <MCC digit 1>%u</MCC digit 1>\n", trackingareaidentitylist->mccdigit1);
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printf(" <MNC digit 3>%u</MNC digit 3>\n", trackingareaidentitylist->mncdigit3);
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printf(" <MCC digit 3>%u</MCC digit 3>\n", trackingareaidentitylist->mccdigit3);
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printf(" <MNC digit 2>%u</MNC digit 2>\n", trackingareaidentitylist->mncdigit2);
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printf(" <MNC digit 1>%u</MNC digit 1>\n", trackingareaidentitylist->mncdigit1);
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printf(" <TAC>0x%.4x</TAC>\n", trackingareaidentitylist->tac);
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printf("</Tracking Area Identity List>\n");
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}
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