Lionel Gauthier
1f5551df6f
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5931 818b1a75-f10b-46b9-bf7c-635c3b92a50f
123 lines
4.1 KiB
C
123 lines
4.1 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 "AccessPointName.h"
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int decode_access_point_name(AccessPointName *accesspointname, 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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int decode_result;
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if (iei > 0)
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{
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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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if ((decode_result = decode_octet_string(&accesspointname->accesspointnamevalue, ielen, buffer + decoded, len - decoded)) < 0)
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return decode_result;
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else
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decoded += decode_result;
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#if defined (NAS_DEBUG)
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dump_access_point_name_xml(accesspointname, iei);
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#endif
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return decoded;
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}
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int encode_access_point_name(AccessPointName *accesspointname, 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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int encode_result;
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OctetString apn_encoded;
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uint32_t length_index;
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uint32_t index;
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uint32_t index_copy;
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/* Checking IEI and pointer */
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CHECK_PDU_POINTER_AND_LENGTH_ENCODER(buffer, ACCESS_POINT_NAME_MINIMUM_LENGTH, len);
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#if defined (NAS_DEBUG)
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dump_access_point_name_xml(accesspointname, iei);
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#endif
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if (iei > 0)
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{
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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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apn_encoded.length = 0;
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apn_encoded.value = calloc(1, ACCESS_POINT_NAME_MAXIMUM_LENGTH);
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index = 0; // index on original APN string
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length_index = 0; // marker where to write partial length
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index_copy = 1;
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while ((accesspointname->accesspointnamevalue.value[index] != 0) && (index < accesspointname->accesspointnamevalue.length)) {
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if (accesspointname->accesspointnamevalue.value[index] == '.') {
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apn_encoded.value[length_index] = index_copy - length_index - 1;
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length_index = index_copy;
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index_copy = length_index + 1;
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} else {
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apn_encoded.value[index_copy] = accesspointname->accesspointnamevalue.value[index];
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index_copy++;
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}
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index++;
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}
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apn_encoded.value[length_index] = index_copy - length_index - 1;
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apn_encoded.length = index_copy;
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if ((encode_result = encode_octet_string(&apn_encoded, buffer + encoded, len - encoded)) < 0) {
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free(apn_encoded.value);
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return encode_result;
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} else
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encoded += encode_result;
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*lenPtr = encoded - 1 - ((iei > 0) ? 1 : 0);
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free(apn_encoded.value);
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return encoded;
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}
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void dump_access_point_name_xml(AccessPointName *accesspointname, uint8_t iei)
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{
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printf("<Access Point Name>\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("%s</Access Point Name>\n",
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dump_octet_string_xml(&accesspointname->accesspointnamevalue));
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}
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