mirror of
https://github.com/bol-van/zapret.git
synced 2024-11-26 12:10:53 +03:00
64 lines
2.8 KiB
C
64 lines
2.8 KiB
C
#pragma once
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
|
|
typedef enum {UNKNOWN=0, HTTP, TLS, QUIC, WIREGUARD, DHT} t_l7proto;
|
|
#define L7_PROTO_HTTP 0x00000001
|
|
#define L7_PROTO_TLS 0x00000002
|
|
#define L7_PROTO_QUIC 0x00000004
|
|
#define L7_PROTO_WIREGUARD 0x00000008
|
|
#define L7_PROTO_DHT 0x00000010
|
|
#define L7_PROTO_UNKNOWN 0x80000000
|
|
const char *l7proto_str(t_l7proto l7);
|
|
bool l7_proto_match(t_l7proto l7proto, uint32_t filter_l7);
|
|
|
|
// pos markers
|
|
#define PM_ABS 0
|
|
#define PM_HOST 1
|
|
#define PM_HOST_END 2
|
|
#define PM_HOST_SLD 3
|
|
#define PM_HOST_MIDSLD 4
|
|
#define PM_HOST_ENDSLD 5
|
|
#define PM_HTTP_METHOD 6
|
|
#define PM_SNI_EXT 7
|
|
struct proto_pos
|
|
{
|
|
int16_t pos;
|
|
uint8_t marker;
|
|
};
|
|
#define PROTO_POS_EMPTY(sp) ((sp)->marker==PM_ABS && (sp)->pos==0)
|
|
bool IsHostMarker(uint8_t posmarker);
|
|
const char *posmarker_name(uint8_t posmarker);
|
|
size_t AnyProtoPos(uint8_t posmarker, int16_t pos, const uint8_t *data, size_t sz);
|
|
size_t HttpPos(uint8_t posmarker, int16_t pos, const uint8_t *data, size_t sz);
|
|
size_t TLSPos(uint8_t posmarker, int16_t pos, const uint8_t *data, size_t sz);
|
|
size_t ResolvePos(const uint8_t *data, size_t sz, t_l7proto l7proto, const struct proto_pos *sp);
|
|
void ResolveMultiPos(const uint8_t *data, size_t sz, t_l7proto l7proto, const struct proto_pos *splits, int split_count, size_t *pos, int *pos_count);
|
|
|
|
|
|
extern const char *http_methods[9];
|
|
const char *HttpMethod(const uint8_t *data, size_t len);
|
|
bool IsHttp(const uint8_t *data, size_t len);
|
|
bool HttpFindHost(uint8_t **pHost,uint8_t *buf,size_t bs);
|
|
bool HttpFindHostConst(const uint8_t **pHost,const uint8_t *buf,size_t bs);
|
|
// header must be passed like this : "\nHost:"
|
|
bool HttpExtractHeader(const uint8_t *data, size_t len, const char *header, char *buf, size_t len_buf);
|
|
bool HttpExtractHost(const uint8_t *data, size_t len, char *host, size_t len_host);
|
|
bool IsHttpReply(const uint8_t *data, size_t len);
|
|
const char *HttpFind2ndLevelDomain(const char *host);
|
|
// must be pre-checked by IsHttpReply
|
|
int HttpReplyCode(const uint8_t *data, size_t len);
|
|
// must be pre-checked by IsHttpReply
|
|
bool HttpReplyLooksLikeDPIRedirect(const uint8_t *data, size_t len, const char *host);
|
|
|
|
uint16_t TLSRecordDataLen(const uint8_t *data);
|
|
size_t TLSRecordLen(const uint8_t *data);
|
|
bool IsTLSRecordFull(const uint8_t *data, size_t len);
|
|
bool IsTLSClientHello(const uint8_t *data, size_t len, bool bPartialIsOK);
|
|
bool TLSFindExt(const uint8_t *data, size_t len, uint16_t type, const uint8_t **ext, size_t *len_ext, bool bPartialIsOK);
|
|
bool TLSFindExtInHandshake(const uint8_t *data, size_t len, uint16_t type, const uint8_t **ext, size_t *len_ext, bool bPartialIsOK);
|
|
bool TLSHelloExtractHost(const uint8_t *data, size_t len, char *host, size_t len_host, bool bPartialIsOK);
|
|
bool TLSHelloExtractHostFromHandshake(const uint8_t *data, size_t len, char *host, size_t len_host, bool bPartialIsOK);
|