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https://github.com/Waujito/youtubeUnblock.git
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3ee979f7d1
Instead of real middle sni we use targetted middle sni for explicit (not all) sni domain list
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
#ifndef TLS_H
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#define TLS_H
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#include "types.h"
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/**
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* Result of analyze_tls_data function
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*/
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struct tls_verdict {
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int target_sni; /* google video hello packet */
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int sni_offset; /* offset from start of tcp _payload_ */
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int sni_target_offset; /* offset of target domain instead of entire sni */
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int sni_len;
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};
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/**
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* Processes the packet and finds TLS Client Hello information inside it.
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* data pointer points to start of TLS Message (TCP Payload)
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*/
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struct tls_verdict analyze_tls_data(const uint8_t *data, uint32_t dlen);
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struct fake_type {
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#define FAKE_PAYLOAD_RANDOM 0
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#define FAKE_PAYLOAD_DATA 1
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// In default mode all other options will be skipped.
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#define FAKE_PAYLOAD_DEFAULT 2
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int type;
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// Length of the final fake message.
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// Pass 0 in RANDOM mode to make it random
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uint16_t fake_len;
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// Payload of the fake message of fake_len length.
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// Will be omitted in RANDOM mode.
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const char *fake_data;
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// faking strategy of the fake packet.
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// Does not support bitmask, pass standalone strategy.
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// Pass 0 if you don't want any faking procedures.
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unsigned int strategy;
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};
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/**
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* Generates the fake client hello message
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*/
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int gen_fake_sni(struct fake_type type,
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const void *iph, uint32_t iph_len,
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const struct tcphdr *tcph, uint32_t tcph_len,
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uint8_t *buf, uint32_t *buflen);
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#endif /* TLS_H */
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