/* * Copyright (c) 2015, EURECOM (www.eurecom.fr) * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * The views and conclusions contained in the software and documentation are those * of the authors and should not be interpreted as representing official policies, * either expressed or implied, of the FreeBSD Project. */ #include #include #include #include #include "TLVEncoder.h" #include "TLVDecoder.h" #include "ModifyEpsBearerContextRequest.h" int decode_modify_eps_bearer_context_request(modify_eps_bearer_context_request_msg *modify_eps_bearer_context_request, uint8_t *buffer, uint32_t len) { uint32_t decoded = 0; int decoded_result = 0; // Check if we got a NULL pointer and if buffer length is >= minimum length expected for the message. CHECK_PDU_POINTER_AND_LENGTH_DECODER(buffer, MODIFY_EPS_BEARER_CONTEXT_REQUEST_MINIMUM_LENGTH, len); /* Decoding mandatory fields */ /* Decoding optional fields */ while(len - decoded > 0) { uint8_t ieiDecoded = *(buffer + decoded); /* Type | value iei are below 0x80 so just return the first 4 bits */ if (ieiDecoded >= 0x80) ieiDecoded = ieiDecoded & 0xf0; switch(ieiDecoded) { case MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEW_EPS_QOS_IEI: if ((decoded_result = decode_eps_quality_of_service(&modify_eps_bearer_context_request->newepsqos, MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEW_EPS_QOS_IEI, buffer + decoded, len - decoded)) <= 0) return decoded_result; decoded += decoded_result; /* Set corresponding mask to 1 in presencemask */ modify_eps_bearer_context_request->presencemask |= MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEW_EPS_QOS_PRESENT; break; case MODIFY_EPS_BEARER_CONTEXT_REQUEST_TFT_IEI: if ((decoded_result = decode_traffic_flow_template(&modify_eps_bearer_context_request->tft, MODIFY_EPS_BEARER_CONTEXT_REQUEST_TFT_IEI, buffer + decoded, len - decoded)) <= 0) return decoded_result; decoded += decoded_result; /* Set corresponding mask to 1 in presencemask */ modify_eps_bearer_context_request->presencemask |= MODIFY_EPS_BEARER_CONTEXT_REQUEST_TFT_PRESENT; break; case MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEW_QOS_IEI: if ((decoded_result = decode_quality_of_service(&modify_eps_bearer_context_request->newqos, MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEW_QOS_IEI, buffer + decoded, len - decoded)) <= 0) return decoded_result; decoded += decoded_result; /* Set corresponding mask to 1 in presencemask */ modify_eps_bearer_context_request->presencemask |= MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEW_QOS_PRESENT; break; case MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEGOTIATED_LLC_SAPI_IEI: if ((decoded_result = decode_llc_service_access_point_identifier(&modify_eps_bearer_context_request->negotiatedllcsapi, MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEGOTIATED_LLC_SAPI_IEI, buffer + decoded, len - decoded)) <= 0) return decoded_result; decoded += decoded_result; /* Set corresponding mask to 1 in presencemask */ modify_eps_bearer_context_request->presencemask |= MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEGOTIATED_LLC_SAPI_PRESENT; break; case MODIFY_EPS_BEARER_CONTEXT_REQUEST_RADIO_PRIORITY_IEI: if ((decoded_result = decode_radio_priority(&modify_eps_bearer_context_request->radiopriority, MODIFY_EPS_BEARER_CONTEXT_REQUEST_RADIO_PRIORITY_IEI, buffer + decoded, len - decoded)) <= 0) return decoded_result; decoded += decoded_result; /* Set corresponding mask to 1 in presencemask */ modify_eps_bearer_context_request->presencemask |= MODIFY_EPS_BEARER_CONTEXT_REQUEST_RADIO_PRIORITY_PRESENT; break; case MODIFY_EPS_BEARER_CONTEXT_REQUEST_PACKET_FLOW_IDENTIFIER_IEI: if ((decoded_result = decode_packet_flow_identifier(&modify_eps_bearer_context_request->packetflowidentifier, MODIFY_EPS_BEARER_CONTEXT_REQUEST_PACKET_FLOW_IDENTIFIER_IEI, buffer + decoded, len - decoded)) <= 0) return decoded_result; decoded += decoded_result; /* Set corresponding mask to 1 in presencemask */ modify_eps_bearer_context_request->presencemask |= MODIFY_EPS_BEARER_CONTEXT_REQUEST_PACKET_FLOW_IDENTIFIER_PRESENT; break; case MODIFY_EPS_BEARER_CONTEXT_REQUEST_APNAMBR_IEI: if ((decoded_result = decode_apn_aggregate_maximum_bit_rate(&modify_eps_bearer_context_request->apnambr, MODIFY_EPS_BEARER_CONTEXT_REQUEST_APNAMBR_IEI, buffer + decoded, len - decoded)) <= 0) return decoded_result; decoded += decoded_result; /* Set corresponding mask to 1 in presencemask */ modify_eps_bearer_context_request->presencemask |= MODIFY_EPS_BEARER_CONTEXT_REQUEST_APNAMBR_PRESENT; break; case MODIFY_EPS_BEARER_CONTEXT_REQUEST_PROTOCOL_CONFIGURATION_OPTIONS_IEI: if ((decoded_result = decode_protocol_configuration_options(&modify_eps_bearer_context_request->protocolconfigurationoptions, MODIFY_EPS_BEARER_CONTEXT_REQUEST_PROTOCOL_CONFIGURATION_OPTIONS_IEI, buffer + decoded, len - decoded)) <= 0) return decoded_result; decoded += decoded_result; /* Set corresponding mask to 1 in presencemask */ modify_eps_bearer_context_request->presencemask |= MODIFY_EPS_BEARER_CONTEXT_REQUEST_PROTOCOL_CONFIGURATION_OPTIONS_PRESENT; break; default: errorCodeDecoder = TLV_DECODE_UNEXPECTED_IEI; return TLV_DECODE_UNEXPECTED_IEI; } } return decoded; } int encode_modify_eps_bearer_context_request(modify_eps_bearer_context_request_msg *modify_eps_bearer_context_request, uint8_t *buffer, uint32_t len) { int encoded = 0; int encode_result = 0; /* Checking IEI and pointer */ CHECK_PDU_POINTER_AND_LENGTH_ENCODER(buffer, MODIFY_EPS_BEARER_CONTEXT_REQUEST_MINIMUM_LENGTH, len); if ((modify_eps_bearer_context_request->presencemask & MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEW_EPS_QOS_PRESENT) == MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEW_EPS_QOS_PRESENT) { if ((encode_result = encode_eps_quality_of_service(&modify_eps_bearer_context_request->newepsqos, MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEW_EPS_QOS_IEI, buffer + encoded, len - encoded)) < 0) // Return in case of error return encode_result; else encoded += encode_result; } if ((modify_eps_bearer_context_request->presencemask & MODIFY_EPS_BEARER_CONTEXT_REQUEST_TFT_PRESENT) == MODIFY_EPS_BEARER_CONTEXT_REQUEST_TFT_PRESENT) { if ((encode_result = encode_traffic_flow_template(&modify_eps_bearer_context_request->tft, MODIFY_EPS_BEARER_CONTEXT_REQUEST_TFT_IEI, buffer + encoded, len - encoded)) < 0) // Return in case of error return encode_result; else encoded += encode_result; } if ((modify_eps_bearer_context_request->presencemask & MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEW_QOS_PRESENT) == MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEW_QOS_PRESENT) { if ((encode_result = encode_quality_of_service(&modify_eps_bearer_context_request->newqos, MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEW_QOS_IEI, buffer + encoded, len - encoded)) < 0) // Return in case of error return encode_result; else encoded += encode_result; } if ((modify_eps_bearer_context_request->presencemask & MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEGOTIATED_LLC_SAPI_PRESENT) == MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEGOTIATED_LLC_SAPI_PRESENT) { if ((encode_result = encode_llc_service_access_point_identifier(&modify_eps_bearer_context_request->negotiatedllcsapi, MODIFY_EPS_BEARER_CONTEXT_REQUEST_NEGOTIATED_LLC_SAPI_IEI, buffer + encoded, len - encoded)) < 0) // Return in case of error return encode_result; else encoded += encode_result; } if ((modify_eps_bearer_context_request->presencemask & MODIFY_EPS_BEARER_CONTEXT_REQUEST_RADIO_PRIORITY_PRESENT) == MODIFY_EPS_BEARER_CONTEXT_REQUEST_RADIO_PRIORITY_PRESENT) { if ((encode_result = encode_radio_priority(&modify_eps_bearer_context_request->radiopriority, MODIFY_EPS_BEARER_CONTEXT_REQUEST_RADIO_PRIORITY_IEI, buffer + encoded, len - encoded)) < 0) // Return in case of error return encode_result; else encoded += encode_result; } if ((modify_eps_bearer_context_request->presencemask & MODIFY_EPS_BEARER_CONTEXT_REQUEST_PACKET_FLOW_IDENTIFIER_PRESENT) == MODIFY_EPS_BEARER_CONTEXT_REQUEST_PACKET_FLOW_IDENTIFIER_PRESENT) { if ((encode_result = encode_packet_flow_identifier(&modify_eps_bearer_context_request->packetflowidentifier, MODIFY_EPS_BEARER_CONTEXT_REQUEST_PACKET_FLOW_IDENTIFIER_IEI, buffer + encoded, len - encoded)) < 0) // Return in case of error return encode_result; else encoded += encode_result; } if ((modify_eps_bearer_context_request->presencemask & MODIFY_EPS_BEARER_CONTEXT_REQUEST_APNAMBR_PRESENT) == MODIFY_EPS_BEARER_CONTEXT_REQUEST_APNAMBR_PRESENT) { if ((encode_result = encode_apn_aggregate_maximum_bit_rate(&modify_eps_bearer_context_request->apnambr, MODIFY_EPS_BEARER_CONTEXT_REQUEST_APNAMBR_IEI, buffer + encoded, len - encoded)) < 0) // Return in case of error return encode_result; else encoded += encode_result; } if ((modify_eps_bearer_context_request->presencemask & MODIFY_EPS_BEARER_CONTEXT_REQUEST_PROTOCOL_CONFIGURATION_OPTIONS_PRESENT) == MODIFY_EPS_BEARER_CONTEXT_REQUEST_PROTOCOL_CONFIGURATION_OPTIONS_PRESENT) { if ((encode_result = encode_protocol_configuration_options(&modify_eps_bearer_context_request->protocolconfigurationoptions, MODIFY_EPS_BEARER_CONTEXT_REQUEST_PROTOCOL_CONFIGURATION_OPTIONS_IEI, buffer + encoded, len - encoded)) < 0) // Return in case of error return encode_result; else encoded += encode_result; } return encoded; }