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71 lines
3.3 KiB
C
71 lines
3.3 KiB
C
#pragma once
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#include <stddef.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include "crypto/sha.h"
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#include "crypto/aes-gcm.h"
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#include "helpers.h"
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// pos markers
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#define PM_ABS 0
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#define PM_HOST 1
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#define PM_HOST_END 2
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#define PM_HOST_SLD 3
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#define PM_HOST_MIDSLD 4
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#define PM_HOST_ENDSLD 5
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#define PM_HTTP_METHOD 6
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#define PM_SNI_EXT 7
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bool IsHostMarker(uint8_t posmarker);
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const char *posmarker_name(uint8_t posmarker);
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size_t AnyProtoPos(uint8_t posmarker, int16_t pos, const uint8_t *data, size_t sz);
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size_t HttpPos(uint8_t posmarker, int16_t pos, const uint8_t *data, size_t sz);
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size_t TLSPos(uint8_t posmarker, int16_t pos, const uint8_t *data, size_t sz);
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extern const char *http_methods[9];
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const char *HttpMethod(const uint8_t *data, size_t len);
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bool IsHttp(const uint8_t *data, size_t len);
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bool HttpFindHost(uint8_t **pHost,uint8_t *buf,size_t bs);
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bool HttpFindHostConst(const uint8_t **pHost,const uint8_t *buf,size_t bs);
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// header must be passed like this : "\nHost:"
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bool HttpExtractHeader(const uint8_t *data, size_t len, const char *header, char *buf, size_t len_buf);
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bool HttpExtractHost(const uint8_t *data, size_t len, char *host, size_t len_host);
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bool IsHttpReply(const uint8_t *data, size_t len);
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const char *HttpFind2ndLevelDomain(const char *host);
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// must be pre-checked by IsHttpReply
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int HttpReplyCode(const uint8_t *data, size_t len);
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// must be pre-checked by IsHttpReply
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bool HttpReplyLooksLikeDPIRedirect(const uint8_t *data, size_t len, const char *host);
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uint16_t TLSRecordDataLen(const uint8_t *data);
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size_t TLSRecordLen(const uint8_t *data);
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bool IsTLSRecordFull(const uint8_t *data, size_t len);
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bool IsTLSClientHello(const uint8_t *data, size_t len, bool bPartialIsOK);
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size_t TLSHandshakeLen(const uint8_t *data);
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bool IsTLSHandshakeClientHello(const uint8_t *data, size_t len);
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bool IsTLSHandshakeFull(const uint8_t *data, size_t len);
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bool TLSFindExt(const uint8_t *data, size_t len, uint16_t type, const uint8_t **ext, size_t *len_ext, bool bPartialIsOK);
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bool TLSFindExtInHandshake(const uint8_t *data, size_t len, uint16_t type, const uint8_t **ext, size_t *len_ext, bool bPartialIsOK);
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bool TLSHelloExtractHost(const uint8_t *data, size_t len, char *host, size_t len_host, bool bPartialIsOK);
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bool TLSHelloExtractHostFromHandshake(const uint8_t *data, size_t len, char *host, size_t len_host, bool bPartialIsOK);
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bool IsWireguardHandshakeInitiation(const uint8_t *data, size_t len);
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bool IsDhtD1(const uint8_t *data, size_t len);
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#define QUIC_MAX_CID_LENGTH 20
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typedef struct quic_cid {
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uint8_t len;
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uint8_t cid[QUIC_MAX_CID_LENGTH];
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} quic_cid_t;
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bool IsQUICInitial(const uint8_t *data, size_t len);
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bool IsQUICCryptoHello(const uint8_t *data, size_t len, size_t *hello_offset, size_t *hello_len);
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bool QUICIsLongHeader(const uint8_t *data, size_t len);
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uint32_t QUICExtractVersion(const uint8_t *data, size_t len);
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uint8_t QUICDraftVersion(uint32_t version);
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bool QUICExtractDCID(const uint8_t *data, size_t len, quic_cid_t *cid);
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bool QUICDecryptInitial(const uint8_t *data, size_t data_len, uint8_t *clean, size_t *clean_len);
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bool QUICDefragCrypto(const uint8_t *clean,size_t clean_len, uint8_t *defrag,size_t *defrag_len);
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//bool QUICExtractHostFromInitial(const uint8_t *data, size_t data_len, char *host, size_t len_host, bool *bDecryptOK, bool *bIsCryptoHello);
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