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/*
// Copyright (c) 2010-2017 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
*/
#ifndef _PCAPPKT_H_
#define _PCAPPKT_H_
#include <inttypes.h>
#include <pcap.h>
#include <string>
#include <cstring>
using namespace std;
struct pkt_tuple {
uint32_t src_addr;
uint32_t dst_addr;
uint8_t proto_id;
uint16_t src_port;
uint16_t dst_port;
bool operator!=(const pkt_tuple& other) const
{
return src_addr != other.src_addr ||
dst_addr != other.dst_addr ||
proto_id != other.proto_id ||
src_port != other.src_port ||
dst_port != other.dst_port;
}
bool operator==(const pkt_tuple& other) const
{
return src_addr == other.src_addr &&
dst_addr == other.dst_addr &&
proto_id == other.proto_id &&
src_port == other.src_port &&
dst_port == other.dst_port;
}
friend ostream& operator<<(ostream& stream, const pkt_tuple &other);
struct pkt_tuple flip() const
{
struct pkt_tuple ret;
ret = *this;
ret.src_addr = dst_addr;
ret.src_port = dst_port;
ret.dst_addr = src_addr;
ret.dst_port = src_port;
return ret;
}
} __attribute__((packed));
class Allocator;
class PcapPkt {
friend class PcapReader;
public:
struct tcp_hdr {
uint16_t src_port; /**< TCP source port. */
uint16_t dst_port; /**< TCP destination port. */
uint32_t sent_seq; /**< TX data sequence number. */
uint32_t recv_ack; /**< RX data acknowledgement sequence number. */
uint8_t data_off; /**< Data offset. */
uint8_t tcp_flags; /**< TCP flags */
uint16_t rx_win; /**< RX flow control window. */
uint16_t cksum; /**< TCP checksum. */
uint16_t tcp_urp; /**< TCP urgent pointer, if any. */
} __attribute__((__packed__));
static Allocator *allocator;
enum L4Proto {PROTO_TCP, PROTO_UDP};
PcapPkt();
void* operator new(size_t size);
static void operator delete(void *pointer);
PcapPkt(const PcapPkt& other);
PcapPkt(uint8_t *mem);
void toMem(uint8_t *mem) const;
void fromMem(uint8_t *mem);
void toFile(ofstream *file) const;
size_t memSize() const;
const struct timeval &ts() const {return header.ts;}
const uint16_t len() const {return header.len;}
pkt_tuple parsePkt(const uint8_t **l4_hdr = NULL, uint16_t *hdr_len = NULL, const uint8_t **l5 = NULL, uint32_t *l5_len = NULL) const;
const struct pcap_pkthdr &hdr() const {return header;}
const uint8_t *payload() const {return buf;}
enum L4Proto getProto() const;
~PcapPkt();
private:
struct pcap_pkthdr header;
uint8_t *buf;
};
#endif /* _PCAPPKT_H_ */
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