int decode_tracking_area_identity_list(TrackingAreaIdentityList *trackingareaidentitylist, uint8_t iei, uint8_t *buffer, uint32_t len)
{
int decoded = 0;
uint8_t ielen = 0;
if (iei > 0) {
CHECK_IEI_DECODER(iei, *buffer);
decoded++;
}
ielen = *(buffer + decoded);
decoded++;
CHECK_LENGTH_DECODER(len - decoded, ielen);
trackingareaidentitylist->typeoflist = (*(buffer + decoded) >> 5) & 0x3;
trackingareaidentitylist->numberofelements = *(buffer + decoded) & 0x1f;
decoded++;
trackingareaidentitylist->mccdigit2 = (*(buffer + decoded) >> 4) & 0xf;
trackingareaidentitylist->mccdigit1 = *(buffer + decoded) & 0xf;
decoded++;
trackingareaidentitylist->mncdigit3 = (*(buffer + decoded) >> 4) & 0xf;
trackingareaidentitylist->mccdigit3 = *(buffer + decoded) & 0xf;
decoded++;
trackingareaidentitylist->mncdigit2 = (*(buffer + decoded) >> 4) & 0xf;
trackingareaidentitylist->mncdigit1 = *(buffer + decoded) & 0xf;
decoded++;
//IES_DECODE_U16(trackingareaidentitylist->tac, *(buffer + decoded));
IES_DECODE_U16(buffer, decoded, trackingareaidentitylist->tac);
#if defined (NAS_DEBUG)
dump_tracking_area_identity_list_xml(trackingareaidentitylist, iei);
#endif
return decoded;
}
int decode_tracking_area_identity(TrackingAreaIdentity *trackingareaidentity, uint8_t iei, uint8_t *buffer, uint32_t len)
{
int decoded = 0;
if (iei > 0) {
CHECK_IEI_DECODER(iei, *buffer);
decoded++;
}
trackingareaidentity->mccdigit2 = (*(buffer + decoded) >> 4) & 0xf;
trackingareaidentity->mccdigit1 = *(buffer + decoded) & 0xf;
decoded++;
trackingareaidentity->mncdigit3 = (*(buffer + decoded) >> 4) & 0xf;
trackingareaidentity->mccdigit3 = *(buffer + decoded) & 0xf;
decoded++;
trackingareaidentity->mncdigit2 = (*(buffer + decoded) >> 4) & 0xf;
trackingareaidentity->mncdigit1 = *(buffer + decoded) & 0xf;
decoded++;
//IES_DECODE_U16(trackingareaidentity->tac, *(buffer + decoded));
IES_DECODE_U16(buffer, decoded, trackingareaidentity->tac);
#if defined (NAS_DEBUG)
dump_tracking_area_identity_xml(trackingareaidentity, iei);
#endif
return decoded;
}
int decode_short_mac(ShortMac *shortmac, uint8_t iei, uint8_t *buffer, uint32_t len)
{
int decoded = 0;
if (iei > 0) {
CHECK_IEI_DECODER(iei, *buffer);
decoded++;
}
//IES_DECODE_U16(*shortmac, *(buffer + decoded));
IES_DECODE_U16(buffer, decoded, *shortmac);
#if defined (NAS_DEBUG)
dump_short_mac_xml(shortmac, iei);
#endif
return decoded;
}
int decode_location_area_identification(LocationAreaIdentification *locationareaidentification, uint8_t iei, uint8_t *buffer, uint32_t len)
{
int decoded = 0;
if (iei > 0)
{
CHECK_IEI_DECODER(iei, *buffer);
decoded++;
}
locationareaidentification->mccdigit2 = (*(buffer + decoded) >> 4) & 0xf;
locationareaidentification->mccdigit1 = *(buffer + decoded) & 0xf;
decoded++;
locationareaidentification->mncdigit3 = (*(buffer + decoded) >> 4) & 0xf;
locationareaidentification->mccdigit3 = *(buffer + decoded) & 0xf;
decoded++;
locationareaidentification->mncdigit2 = (*(buffer + decoded) >> 4) & 0xf;
locationareaidentification->mncdigit1 = *(buffer + decoded) & 0xf;
decoded++;
//IES_DECODE_U16(locationareaidentification->lac, *(buffer + decoded));
IES_DECODE_U16(buffer, decoded, locationareaidentification->lac);
#if defined (NAS_DEBUG)
dump_location_area_identification_xml(locationareaidentification, iei);
#endif
return decoded;
}
static int decode_traffic_flow_template_packet_filters(PacketFilters* packetfilters, uint8_t nbpacketfilters, uint8_t *buffer, uint32_t len)
{
int decoded = 0, i, j;
for (i = 0; (i < nbpacketfilters); i++)
{
if (len - decoded <= 0) {
/* Mismatch between the number of packet filters subfield,
* and the number of packet filters in the packet filter list */
return (TLV_DECODE_VALUE_DOESNT_MATCH);
}
/* Initialize the packet filter presence flag indicator */
(*packetfilters)[i].packetfilter.flags = 0;
/* Packet filter direction */
(*packetfilters)[i].direction = *(buffer + decoded) >> 4;
/* Packet filter identifier */
(*packetfilters)[i].identifier = *(buffer + decoded) & 0x0f;
decoded++;
/* Packet filter evaluation precedence */
IES_DECODE_U8(buffer, decoded, (*packetfilters)[i].eval_precedence);
/* Length of the Packet filter contents field */
uint8_t pkflen;
IES_DECODE_U8(buffer, decoded, pkflen);
/* Packet filter contents */
int pkfstart = decoded;
while (decoded - pkfstart < pkflen)
{
/* Packet filter component type identifier */
uint8_t component_type;
IES_DECODE_U8(buffer, decoded, component_type);
switch (component_type)
{
case TRAFFIC_FLOW_TEMPLATE_IPV4_REMOTE_ADDR:
/* IPv4 remote address type */
(*packetfilters)[i].packetfilter.flags |= TRAFFIC_FLOW_TEMPLATE_IPV4_REMOTE_ADDR_FLAG;
for (j = 0; j < TRAFFIC_FLOW_TEMPLATE_IPV4_ADDR_SIZE; j++)
{
(*packetfilters)[i].packetfilter.ipv4remoteaddr[j].addr = *(buffer + decoded);
(*packetfilters)[i].packetfilter.ipv4remoteaddr[j].mask = *(buffer + decoded + TRAFFIC_FLOW_TEMPLATE_IPV4_ADDR_SIZE);
decoded++;
}
decoded += TRAFFIC_FLOW_TEMPLATE_IPV4_ADDR_SIZE;
break;
case TRAFFIC_FLOW_TEMPLATE_IPV6_REMOTE_ADDR:
/* IPv6 remote address type */
(*packetfilters)[i].packetfilter.flags |= TRAFFIC_FLOW_TEMPLATE_IPV6_REMOTE_ADDR_FLAG;
for (j = 0; j < TRAFFIC_FLOW_TEMPLATE_IPV6_ADDR_SIZE; j++)
{
(*packetfilters)[i].packetfilter.ipv6remoteaddr[j].addr = *(buffer + decoded);
(*packetfilters)[i].packetfilter.ipv6remoteaddr[j].mask = *(buffer + decoded + TRAFFIC_FLOW_TEMPLATE_IPV6_ADDR_SIZE);
decoded++;
}
decoded += TRAFFIC_FLOW_TEMPLATE_IPV6_ADDR_SIZE;
break;
case TRAFFIC_FLOW_TEMPLATE_PROTOCOL_NEXT_HEADER:
/* Protocol identifier/Next header type */
(*packetfilters)[i].packetfilter.flags |= TRAFFIC_FLOW_TEMPLATE_PROTOCOL_NEXT_HEADER_FLAG;
IES_DECODE_U8(buffer, decoded, (*packetfilters)[i].packetfilter.protocolidentifier_nextheader);
break;
case TRAFFIC_FLOW_TEMPLATE_SINGLE_LOCAL_PORT:
/* Single local port type */
(*packetfilters)[i].packetfilter.flags |= TRAFFIC_FLOW_TEMPLATE_SINGLE_LOCAL_PORT_FLAG;
IES_DECODE_U16(buffer, decoded, (*packetfilters)[i].packetfilter.singlelocalport);
break;
case TRAFFIC_FLOW_TEMPLATE_LOCAL_PORT_RANGE:
/* Local port range type */
(*packetfilters)[i].packetfilter.flags |= TRAFFIC_FLOW_TEMPLATE_LOCAL_PORT_RANGE_FLAG;
IES_DECODE_U16(buffer, decoded, (*packetfilters)[i].packetfilter.localportrange.lowlimit);
IES_DECODE_U16(buffer, decoded, (*packetfilters)[i].packetfilter.localportrange.highlimit);
break;
case TRAFFIC_FLOW_TEMPLATE_SINGLE_REMOTE_PORT:
/* Single remote port type */
(*packetfilters)[i].packetfilter.flags |=TRAFFIC_FLOW_TEMPLATE_SINGLE_REMOTE_PORT_FLAG ;
IES_DECODE_U16(buffer, decoded, (*packetfilters)[i].packetfilter.singleremoteport);
break;
case TRAFFIC_FLOW_TEMPLATE_REMOTE_PORT_RANGE:
/* Remote port range type */
(*packetfilters)[i].packetfilter.flags |= TRAFFIC_FLOW_TEMPLATE_REMOTE_PORT_RANGE_FLAG;
IES_DECODE_U16(buffer, decoded, (*packetfilters)[i].packetfilter.remoteportrange.lowlimit);
IES_DECODE_U16(buffer, decoded, (*packetfilters)[i].packetfilter.remoteportrange.highlimit);
break;
case TRAFFIC_FLOW_TEMPLATE_SECURITY_PARAMETER_INDEX:
/* Security parameter index type */
(*packetfilters)[i].packetfilter.flags |= TRAFFIC_FLOW_TEMPLATE_SECURITY_PARAMETER_INDEX_FLAG;
IES_DECODE_U32(buffer, decoded, (*packetfilters)[i].packetfilter.securityparameterindex);
break;
case TRAFFIC_FLOW_TEMPLATE_TYPE_OF_SERVICE_TRAFFIC_CLASS:
/* Type of service/Traffic class type */
(*packetfilters)[i].packetfilter.flags |= TRAFFIC_FLOW_TEMPLATE_TYPE_OF_SERVICE_TRAFFIC_CLASS_FLAG;
IES_DECODE_U8(buffer, decoded, (*packetfilters)[i].packetfilter.typdeofservice_trafficclass.value);
IES_DECODE_U8(buffer, decoded, (*packetfilters)[i].packetfilter.typdeofservice_trafficclass.mask);
break;
case TRAFFIC_FLOW_TEMPLATE_FLOW_LABEL:
/* Flow label type */
(*packetfilters)[i].packetfilter.flags |= TRAFFIC_FLOW_TEMPLATE_FLOW_LABEL_FLAG;
IES_DECODE_U24(buffer, decoded, (*packetfilters)[i].packetfilter.flowlabel);
break;
default:
/* Packet filter component type identifier is not valid */
return (TLV_DECODE_UNEXPECTED_IEI);
break;
}
}
}
if (len - decoded != 0) {
/* Mismatch between the number of packet filters subfield,
* and the number of packet filters in the packet filter list */
return (TLV_DECODE_VALUE_DOESNT_MATCH);
}
return decoded;
}
