mirror of https://github.com/PentHertz/srsLTE.git
107 lines
3.9 KiB
C++
107 lines
3.9 KiB
C++
/*
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* Copyright 2013-2019 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE 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 Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSUE_PACKET_FILTER_H
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#define SRSUE_PACKET_FILTER_H
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#include "srslte/asn1/liblte_mme.h"
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#include "srslte/common/buffer_pool.h"
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#include "srslte/common/log.h"
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namespace srsue {
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const uint16_t IPV4_REMOTE_ADDR_FLAG = 1;
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const uint16_t IPV4_LOCAL_ADDR_FLAG = 1 << 1;
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const uint16_t IPV6_REMOTE_ADDR_FLAG = 1 << 2;
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const uint16_t IPV6_REMOTE_ADDR_LENGTH_FLAG = 1 << 3;
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const uint16_t IPV6_LOCAL_ADDR_LENGTH_FLAG = 1 << 4;
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const uint16_t PROTOCOL_ID_FLAG = 1 << 5;
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const uint16_t SINGLE_LOCAL_PORT_FLAG = 1 << 6;
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const uint16_t LOCAL_PORT_RANGE_FLAG = 1 << 7;
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const uint16_t SINGLE_REMOTE_PORT_FLAG = 1 << 8;
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const uint16_t REMOTE_PORT_RANGE_FLAG = 1 << 9;
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const uint16_t SECURITY_PARAMETER_INDEX_FLAG = 1 << 10;
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const uint16_t TYPE_OF_SERVICE_FLAG = 1 << 11;
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const uint16_t FLOW_LABEL_FLAG = 1 << 12;
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const uint8_t IPV4_REMOTE_ADDR_TYPE = 0b00010000;
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const uint8_t IPV4_LOCAL_ADDR_TYPE = 0b00010001;
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const uint8_t IPV6_REMOTE_ADDR_TYPE = 0b00100000;
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const uint8_t IPV6_REMOTE_ADDR_LENGTH_TYPE = 0b00100001;
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const uint8_t IPV6_LOCAL_ADDR_LENGTH_TYPE = 0b00100011;
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const uint8_t PROTOCOL_ID_TYPE = 0b00110000;
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const uint8_t SINGLE_LOCAL_PORT_TYPE = 0b01000000;
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const uint8_t LOCAL_PORT_RANGE_TYPE = 0b01000001;
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const uint8_t SINGLE_REMOTE_PORT_TYPE = 0b01010000;
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const uint8_t REMOTE_PORT_RANGE_TYPE = 0b01010001;
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const uint8_t SECURITY_PARAMETER_INDEX_TYPE = 0b01100000;
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const uint8_t TYPE_OF_SERVICE_TYPE = 0b01110000;
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const uint8_t FLOW_LABEL_TYPE = 0b10000000;
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// Helper const
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const uint8_t IPV4_ADDR_SIZE = 4;
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const uint8_t IPV6_ADDR_SIZE = 16;
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const uint8_t UDP_PROTOCOL = 0x11;
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const uint8_t TCP_PROTOCOL = 0x06;
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// TS 24.008 Table 10.5.162
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class tft_packet_filter_t
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{
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public:
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tft_packet_filter_t(uint8_t eps_bearer_id_,
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uint8_t lcid_,
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const LIBLTE_MME_PACKET_FILTER_STRUCT& tft_,
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srslte::log* log_);
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bool match(const srslte::unique_byte_buffer_t& pdu);
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uint8_t eps_bearer_id;
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uint8_t lcid;
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uint8_t id;
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uint8_t eval_precedence;
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uint16_t active_filters;
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uint32_t ipv4_remote_addr;
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uint32_t ipv4_local_addr;
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uint8_t ipv6_remote_addr[16];
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uint8_t ipv6_remote_addr_length;
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uint8_t ipv6_local_addr_length;
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uint8_t protocol_id;
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uint16_t single_local_port;
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uint16_t local_port_range[2];
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uint16_t single_remote_port;
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uint16_t remote_port_range[2];
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uint32_t security_parameter_index;
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uint8_t type_of_service;
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uint8_t type_of_service_mask;
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uint8_t flow_label[3];
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srslte::log* log;
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bool match_ip(const srslte::unique_byte_buffer_t& pdu);
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bool match_protocol(const srslte::unique_byte_buffer_t& pdu);
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bool match_type_of_service(const srslte::unique_byte_buffer_t& pdu);
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bool match_flow_label(const srslte::unique_byte_buffer_t& pdu);
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bool match_port(const srslte::unique_byte_buffer_t& pdu);
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};
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} // namespace srsue
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#endif // SRSUE_TFT_PACKET_FILTER_H
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