zapret/nfq/desync.h

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#pragma once
#include "darkmagic.h"
#include "nfqws.h"
#include <stdint.h>
#include <stdbool.h>
#include <netinet/ip.h>
#include <netinet/ip6.h>
#include <netinet/tcp.h>
#include <netinet/in.h>
#ifdef __linux__
#define DPI_DESYNC_FWMARK_DEFAULT 0x40000000
#else
#define DPI_DESYNC_FWMARK_DEFAULT 512
#endif
#define DPI_DESYNC_MAX_FAKE_LEN 9216
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enum dpi_desync_mode {
DESYNC_NONE=0,
DESYNC_INVALID,
DESYNC_FAKE,
DESYNC_RST,
DESYNC_RSTACK,
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DESYNC_SYNACK,
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DESYNC_DISORDER,
DESYNC_DISORDER2,
DESYNC_SPLIT,
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DESYNC_SPLIT2,
DESYNC_IPFRAG2,
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DESYNC_HOPBYHOP,
DESYNC_DESTOPT
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};
extern const char *fake_http_request_default;
extern const uint8_t fake_tls_clienthello_default[517];
enum dpi_desync_mode desync_mode_from_string(const char *s);
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bool desync_valid_zero_stage(enum dpi_desync_mode mode);
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bool desync_valid_first_stage(enum dpi_desync_mode mode);
bool desync_only_first_stage(enum dpi_desync_mode mode);
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bool desync_valid_second_stage(enum dpi_desync_mode mode);
void desync_init();
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packet_process_result dpi_desync_tcp_packet(uint8_t *data_pkt, size_t len_pkt, struct ip *ip, struct ip6_hdr *ip6hdr, struct tcphdr *tcphdr, size_t len_tcp, uint8_t *data_payload, size_t len_payload);
packet_process_result dpi_desync_udp_packet(uint8_t *data_pkt, size_t len_pkt, struct ip *ip, struct ip6_hdr *ip6hdr, struct udphdr *udphdr, uint8_t *data_payload, size_t len_payload);