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38 lines
938 B
Go
38 lines
938 B
Go
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package obfs
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import (
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"errors"
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"fmt"
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"strings"
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)
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var (
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errTLS12TicketAuthIncorrectMagicNumber = errors.New("tls1.2_ticket_auth incorrect magic number")
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errTLS12TicketAuthTooShortData = errors.New("tls1.2_ticket_auth too short data")
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errTLS12TicketAuthHMACError = errors.New("tls1.2_ticket_auth hmac verifying failed")
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)
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// Obfs provides methods for decoding and encoding
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type Obfs interface {
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initForConn() Obfs
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GetObfsOverhead() int
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Decode(b []byte) ([]byte, bool, error)
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Encode(b []byte) ([]byte, error)
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}
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type obfsCreator func(b *Base) Obfs
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var obfsList = make(map[string]obfsCreator)
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func register(name string, c obfsCreator) {
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obfsList[name] = c
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}
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// PickObfs returns an obfs of the given name
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func PickObfs(name string, b *Base) (Obfs, error) {
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if obfsCreator, ok := obfsList[strings.ToLower(name)]; ok {
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return obfsCreator(b), nil
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}
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return nil, fmt.Errorf("Obfs %s not supported", name)
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}
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