148 lines
5.3 KiB
C
148 lines
5.3 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 "UeNetworkCapability.h"
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int decode_ue_network_capability(UeNetworkCapability *uenetworkcapability, 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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{
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CHECK_IEI_DECODER(iei, *buffer);
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decoded++;
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}
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DECODE_U8(buffer + decoded, ielen, decoded);
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LOG_TRACE(INFO, "decode_ue_network_capability len = %d",ielen);
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CHECK_LENGTH_DECODER(len - decoded, ielen);
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uenetworkcapability->eea = *(buffer + decoded);
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decoded++;
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uenetworkcapability->eia = *(buffer + decoded);
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decoded++;
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/* Parts below not mandatory and may not be present */
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if (ielen > 2) {
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uenetworkcapability->uea = *(buffer + decoded);
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decoded++;
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if (ielen > 3) {
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uenetworkcapability->ucs2 = (*(buffer + decoded) >> 7) & 0x1;
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uenetworkcapability->uia = *(buffer + decoded) & 0x7f;
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decoded++;
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if (ielen > 4) {
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uenetworkcapability->spare = (*(buffer + decoded) >> 5) & 0x7;
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uenetworkcapability->csfb = (*(buffer + decoded) >> 4) & 0x1;
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uenetworkcapability->lpp = (*(buffer + decoded) >> 3) & 0x1;
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uenetworkcapability->lcs = (*(buffer + decoded) >> 2) & 0x1;
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uenetworkcapability->srvcc = (*(buffer + decoded) >> 1) & 0x1;
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uenetworkcapability->nf = *(buffer + decoded) & 0x1;
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decoded++;
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}
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}
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}
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LOG_TRACE(INFO, "uenetworkcapability decoded=%u\n", decoded);
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if ((ielen + 2) != decoded) {
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decoded = ielen + 1 + (iei > 0 ? 1 : 0) /* Size of header for this IE */;
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LOG_TRACE(INFO, "uenetworkcapability then decoded=%u\n", decoded);
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}
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#if defined (NAS_DEBUG)
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dump_ue_network_capability_xml(uenetworkcapability, iei);
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#endif
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return decoded;
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}
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int encode_ue_network_capability(UeNetworkCapability *uenetworkcapability, 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, UE_NETWORK_CAPABILITY_MINIMUM_LENGTH, len);
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#if defined (NAS_DEBUG)
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dump_ue_network_capability_xml(uenetworkcapability, 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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*(buffer + encoded) = uenetworkcapability->eea;
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encoded++;
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*(buffer + encoded) = uenetworkcapability->eia;
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encoded++;
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*(buffer + encoded) = uenetworkcapability->uea;
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encoded++;
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*(buffer + encoded) = 0x00 | ((uenetworkcapability->ucs2 & 0x1) << 7) |
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(uenetworkcapability->uia & 0x7f);
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encoded++;
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*(buffer + encoded) = 0x00 |
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//((uenetworkcapability->spare & 0x7) << 5) | // spare coded as zero
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((uenetworkcapability->csfb & 0x1) << 4) |
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((uenetworkcapability->lpp & 0x1) << 3) |
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((uenetworkcapability->lcs & 0x1) << 2) |
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((uenetworkcapability->srvcc & 0x1) << 1) |
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(uenetworkcapability->nf & 0x1);
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encoded++;
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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_ue_network_capability_xml(UeNetworkCapability *uenetworkcapability, uint8_t iei)
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{
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printf("<Ue Network Capability>\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(" <EEA>%02x</EEA>\n", uenetworkcapability->eea);
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printf(" <EIA>%02x</EIA>\n", uenetworkcapability->eia);
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printf(" <UEA>%02x</UEA>\n", uenetworkcapability->uea);
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printf(" <UCS2>%u</UCS2>\n", uenetworkcapability->ucs2);
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printf(" <UIA>%u</UIA>\n", uenetworkcapability->uia);
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printf(" <SPARE>%u</SPARE>\n", uenetworkcapability->spare);
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printf(" <CSFB>%u</CSFB>\n", uenetworkcapability->csfb);
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printf(" <LPP>%u</LPP>\n", uenetworkcapability->lpp);
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printf(" <LCS>%u</LCS>\n", uenetworkcapability->lcs);
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printf(" <SR VCC>%u</SR VCC>\n", uenetworkcapability->srvcc);
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printf(" <NF>%u<NF/>\n", uenetworkcapability->nf);
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printf("</Ue Network Capability>\n");
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}
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